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    • 专利摘要:
    A broken rail detection system is described, including a power module having: a first electrical connection to the first rail, to apply a direct current voltage; and a second electrical connection to the second rail, to apply a direct current voltage; a diode bridge arrangement (shunt); a measuring device for detecting or measuring current; and a controller programmed or configured to: (i) cause at least one application of a DC voltage of a first polarity to the railroad; (ii) determine the current resulting from the application step (i); (iii) cause at least one application of a DC voltage of a second polarity to the railroad; (iv) determine the current resulting from the application step (iii); and (v) determining the presence or absence of an interruption, based, at least partially, on the determined current.
    公开号:BR112017004795B1
    申请号:R112017004795-0
    申请日:2014-12-11
    公开日:2020-12-01
    发明作者:Robert C. Kull
    申请人:Westinghouse Air Brake Technologies Corporation；
    IPC主号:
    专利说明:

    [0001] [001] This patent application claims priority to U.S. Patent Application No. 14 / 484,672, filed on September 12, 2014, the contents of which are hereby incorporated by reference in their entirety. BACKGROUND OF THE INVENTION FIELD OF THE INVENTION
    [0002] [002] The present invention relates, in general, to railway networks and control systems used in connection with trains operating on the railway network, and in particular refers to systems and methods for detecting broken tracks on tracks, especially in railway systems, such as in railway systems that implement systems and methods of controlling trains based on communications. DESCRIPTION OF THE STATE OF RELATED ART
    [0003] [003] Conventional train signaling systems use railroad circuits for two basic functions: train detection and detection of broken tracks. In addition, conventional alternating current (AC) coded rail tracks are used for rail communications to the signal aspect data train. The most common type of rail circuit used in non-electrified lines is the direct current (DC) circuit, which was invented in 1872 and is still widely used today. There are many variations for DC rail circuits, including coding to extend lengths and transfer signal information between rail locations across rails. These variations of DC rail tracks use insulated joints to isolate adjacent rail tracks, and are typically applied to define signal block sections, which are related to signal locations and fixed block train control systems. Signal block sections are used to maintain a safe separation distance between trains.
    [0004] [004] Audio-frequency (AF) railroad circuits are commonly used in metro train (subway) signal applications, where shorter routes are required to support trains with shorter stopping distances. AF rail circuits are also applied to electrified lines where DC rail circuits do not work. AF rail track circuits do not require insulated joints, but are limited in length due to track inductance. More specifically, rail inductance normally limits the length of the AF rail track circuits by about 1 km, compared to the length limit of approximately 5 km for the DC rail track. In addition, the AF rail circuits are more complex and expensive to build and operate than the DC rail circuits. The combination of higher cost and length limitations makes AF rail circuits impractical economically for application on lines designed for non-electrified cargo traffic.
    [0005] [005] Communication-based train control systems (CBTC -Communication Based Train Control) are based on trains that determine and report their locations to a control center through radio data communication. A train can also be equipped to monitor its integrity, for example, to ensure that the train remains connected together as a single unit, with the location of each end of the train being known and reported to the control center. CBTC systems can be applied as a mobile block configuration, which maintains safe separation distances between trains based on communications between each train and a dispatch system from the exchange. The train separation distances can thus be reduced by the "moving block" configuration, based on the train's braking speeds and capabilities. When the "movable block" configuration is combined with more modern train braking systems, such as electrically controlled pneumatic brakes (ECP -Electrically Controlled Pneumatic), the braking distances can be further reduced. The safer operation of trains with shorter separation distances between them, as well as the removal of fixed and associated block railway signals, can be supported by CBTC systems.
    [0006] [006] Conventional CBTC systems can eliminate the need for rail track circuits per block for train detection and for the functions associated with safe train separation distance, but do not address the detection of broken track conditions. Therefore, conventional rail circuits can be applied, in addition to CBTC systems, to ensure the protection of the tracks. The basic configuration of a rail circuit consists of two parallel rails in a series arrangement, with an electrical signal transmitter and an electrical signal receiver. The wheels and axle of the railway vehicle that cross the rails in a section of the railway provide an electric shunt between the rails. The bridge path created by the wagon makes the transmitted signal detect the presence of the train in that section of the railway. The detected presence is used to activate upstream railway signals, to command approaching trains to slow down or stop before entering a busy section. In addition, certain traditional railway signaling systems involving rail circuits are being replaced, in some applications, by CBTC technology, through which the train's position, speed and direction are communicated through continuous two-way communications between vehicles and track computers. Examples of CBTCs include the electronic train management system (ETMS - Electronic Train Management System) from the company Wabtec Corporation. Although CBTC technology does not require rail circuits to detect trains, such circuits can be retained for protection against broken tracks.
    [0007] [007] Conventional rail circuits are of many different types, but standardized signal applications use "normally energized" circuits, having a power source at one end (for example, a battery) and a receiver (for example, relay-activated switching) at the other end. When the train makes a bridge (shunt) on the railroad, it short-circuits the circuit and the relay "falls" (opens). In this way, the direct current through the relay coil keeps the switching in the indicative position of the unoccupied track section. An alternative rail circuit configuration is "normally de-energized". The power source and receiver are at the same end of the section. The energy is applied when a train approaches the section. The train bridge (shunt) completes the circuit and energizes the relay to indicate the presence of the train. This is not inherently fail safe, as a battery or relay failure could cause the relay to "fall" (open). An advantage of the normally de-energized rail circuit, with a transmitter and receiver at the same end, is the ability to check the rail circuit to detect interruptions (breaks) while the train is within the rail section, as long as the transmission / reception is in front of the train. Furthermore, railway tracks encoded by alternating current can provide detection of breakage of the tracks, on board, when the train is inside the section. In this case, the transmitter is on the far side of the section, from the receiver, with the train approaching the transmitter, while receiving encoded signals through pickup coils in front of the front axle. This is considered to be the safest form of traditional automatic protection of trains, due to the continuous communication of signal aspect data, as well as due to the ability to reflect rail breaks directly in front of the train within that section (rail circuit) .
    [0008] [008] Single rail networks typically have branch lines (or stations) that are spaced between 25 and 30 kilometers apart. Within branches / stations, which have a typical length of about 3 km, and as discussed, the detection of broken tracks can be provided with conventional DC rail tracks. Due to the low traffic density, there may be no need to closely monitor trains in block sections between extensions / stations. On-board systems, such as ETMS, and central systems, currently provide train tracking functions, which eliminates the need for conventional rail circuits for the entire network.
    [0009] [009] Therefore, there is a need for improved systems and methods for detecting broken trails. There is also a need for long distance broken track detection systems and methods. With specific reference to light traffic, on single rail railway networks, there is a need for a technology that can be used to support the remote operation of switching machines, without the cost and the need for complete railroad signals and a railroad circuit system. SUMMARY OF THE INVENTION
    [0010] [010] An improved system and method for detecting broken tracks for railway systems is generally provided here. Preferably, a system and a method of detecting broken tracks for a railway system are provided, which are useful for sections or blocks of railways over longer distances. Preferably, a system and a method of detecting broken tracks that can operate using minimal communication and power systems and arrangements are provided. Preferably, a system and a method for detecting broken rails is provided that can be implemented using existing energy and communication systems and technologies, such as existing switching arrangements and devices. Preferably, a broken rail detection system and method is provided which are useful in connection with communication based train control systems.
    [0011] [011] In accordance with a preferred and non-limiting form of incorporation, a system for detecting broken tracks is provided for a portion of a railway track having a first and a second opposite track, each supported by at least one sleeper and one ballast material. The system includes: at least one power module, having 1) a first electrical connection to the first rail, configured to apply a direct current voltage to the first rail, and 2) a second electrical connection to the second rail, configured to apply a direct current voltage to the second rail; at least one shunt diode array positioned at a distance from at least one power module; at least one measuring device, configured to detect or measure the current resulting from the application of direct current voltage from the first electrical connection and the second electrical connection; and at least one controller in direct or indirect communication with at least one power module and with at least one measuring device. At least one controller is programmed, configured or adapted to: (i) cause at least one application of a DC voltage of a first polarity on the rail, through the first electrical connection and the second electrical connection; (ii) determine the current resulting from the application step (i), using at least one measuring device; (iii) cause at least one application of a DC voltage of a second polarity on the railroad, through the first electrical connection and the second electrical connection; (iv) determine the current resulting from the application step (iii), using at least one measuring device; and (v) determining the presence or absence of an interruption in at least one of the first and second tracks, based, at least partially, on the current determined in steps (ii) and (iv).
    [0012] [012] In another preferred and non-limiting form of incorporation, a broken rail detection system is provided for a portion of a rail track having an opposing first and second track, each supported by at least one sleeper and a material of ballast. The system includes: a first power module positioned at a first end of the rail portion, having (1) a first electrical connection to the first rail, configured to apply a direct current voltage to the first rail, and (2) a second electrical connection to the second rail, configured to apply a direct current voltage to the second rail; a first shunt diode array disposed at a distance from the first end of the rail track portion; a first measuring device configured to detect or measure the current resulting from the application of direct current voltage from the first electrical connection and the second electrical connection; a first controller in direct or indirect communication with the first power module and the first measuring device, programmed, configured or adapted to: (i) cause at least one application of a DC voltage of a first polarity on the railroad , through the first electrical connection and the second electrical connection; (ii) determine the current resulting from the application step (i), using the first measuring device; (iii) cause at least one application of a DC voltage of a second polarity on the railroad, through the first electrical connection and the second electrical connection; (iv) determine the current resulting from the application step (iii), using the first measuring device; and (v) determining the presence or absence of an interruption in at least one of the first and second tracks in a first portion of the rail portion, based, at least partially, on the current determined in steps (ii) and (iv) ; a second power module positioned at a second end of the rail portion, having: (1) a first electrical connection to the first rail, configured to apply a direct current voltage to the first rail, and (2) a second electrical connection with the second rail, configured to apply a direct current voltage to the second rail; a second shunt diode array positioned at a distance from the second end of the rail portion; a second measuring device configured to detect or measure the current resulting from the application of direct current voltage from the first electrical connection and the second electrical connection; a second controller in direct or indirect communication with the second power module and the second measuring device, configured to: (i) cause at least one application of a DC voltage of a first polarity on the rail, through the first electrical connection and the second electrical connection; (ii) determine the current resulting from the application step (i), using the second measuring device; (iii) cause at least one application of a DC voltage of a second polarity on the railroad, through the first electrical connection and the second electrical connection; (iv) determine the current resulting from the application step (iii), using the second measuring device; and (v) determining the presence or absence of an interruption in at least one of the first and second tracks in a second portion of the rail portion, based, at least partially, on the current determined in steps (ii) and (iv) ; and at least one insulating joint positioned between the first bridge diode (shunt) and the second bridge diode, configured to prevent electrical communication between the first and second portions of the rail portion.
    [0013] [013] In another preferred and non-limiting form of incorporation, a method is provided for detecting an interrupted track on a portion of a rail track having an opposing first and second track, each supported by at least one sleeper and a material ballast. The method includes: (i) causing at least one application of a direct current voltage of a first polarity on the railroad, through a first electrical connection with the first rail and a second electrical connection with the second rail; (ii) determine the current resulting from the application step (i); (iii) cause at least one application of a DC voltage of a second polarity on the railroad, through the first electrical connection and the second electrical connection; (iv) determine the current resulting from the application step (iii); and (v) determining the presence or absence of an interruption in at least one of the first and second tracks, based, at least partially, on the current determined in steps (ii) and (iv).
    [0014] - A fig. 1 é uma vista esquemática de uma forma de incorporação de um sistema de detecção de trilhos interrompidos, de acordo com os princípios da presente invenção; - A fig. 2 é uma vista esquemática de outra forma de incorporação de um sistema de detecção de trilhos interrompidos, de acordo com os princípios da presente invenção; - A fig. 3 é uma vista esquemática de uma outra forma de incorporação de um sistema de detecção de trilhos interrompidos, de acordo com os princípios da presente invenção; - A fig. 4 é uma vista esquemática de uma outra forma de incorporação de um sistema de detecção de trilhos interrompidos, de acordo com os princípios da presente invenção; - A fig. 5 é uma forma de incorporação de um método de aplicação de tensão de corrente contínua para um sistema de detecção de trilhos interrompidos, de acordo com os princípios da presente invenção; e - A fig. 6 é uma forma de incorporação de um diagrama elétrico para um sistema de detecção de trilhos interrompidos, de acordo com os princípios da presente invenção. [014] These and other features of the present invention, as well as the methods of operation and functions of the related elements of the structures, and the combination of parts and manufacturing economies, will become more evident from the description below and the appended claims, with reference to the accompanying drawings, all forming part of this description, in which equal reference numbers designate corresponding parts in the various figures. However, it should be expressly understood that the drawings are for illustration and description purposes only, and are not intended to define the limits of the invention. As used in this specification and in the claims, the singular form of "one", "one" and "o" or "a" includes its related plurals, unless the context clearly indicates otherwise. BRIEF DESCRIPTION OF THE DRAWINGS - Fig. 1 is a schematic view of a way of incorporating an interrupted rail detection system, in accordance with the principles of the present invention; - Fig. 2 is a schematic view of another way of incorporating an interrupted rail detection system, in accordance with the principles of the present invention; - Fig. 3 is a schematic view of another form of incorporating an interrupted rail detection system, in accordance with the principles of the present invention; - Fig. 4 is a schematic view of another form of incorporating an interrupted rail detection system, in accordance with the principles of the present invention; - Fig. 5 is a way of incorporating a method of applying direct current voltage to a broken rail detection system, in accordance with the principles of the present invention; and - Fig. 6 is a way of incorporating an electrical diagram for a broken track detection system, in accordance with the principles of the present invention.
    [0015] [015] For the purposes of the description below, the terms "end", "top", "bottom", "right", "left", "vertical", "horizontal", "top", "bottom", " lateral "," longitudinal ", and their derivatives, refer to the invention as oriented in the figures of the drawings. It is to be understood that the invention may assume several alternative variations and sequences of steps, unless expressly specified otherwise. It should also be understood that the specific systems, devices and processes, illustrated in the accompanying drawings and described in the following specification, are only exemplary embodiments of the invention. Therefore, the specific dimensions and other physical characteristics related to the forms of incorporation described here should not be considered as limiting.
    [0016] [016] As used herein, the terms "communication" and "communicating" refer to the reception or transfer of one or more signals, messages, commands or other types of data. When a unit or component is in communication with another unit or component, this means that a unit or component is capable of receiving data from, and / or transmitting data to, another unit or component, directly or indirectly. This can refer to a direct or indirect connection, the nature of which can be wired and / or wireless. In addition, two units or components can be in communication with each other, even if the transmitted data can be modified, processed, routed, etc. between the first and the second unit or component. For example, a first unit may be in communication with a second unit even though the first unit receives data passively, and does not actively transmit data to the second unit. As another example, a first unit can be in communication with a second unit if an intermediate unit processes data from one unit and transmits processed data to the second unit. It should be understood that numerous other provisions are possible.
    [0017] [017] In certain preferred and non-limiting forms of incorporation, the broken rail detection system and method is used in connection with or integrated with communications-based train control (CBTC) systems, such as the supplied CBTC systems by the company Wabtec ETMS®. Such preferred and non-limiting forms of incorporation use the knowledge of CBTC systems for the locations or positions of trains on the rail network.
    [0018] [018] In a preferred and non-limiting embodiment, and as illustrated in fig. 1, a broken track detection system 100 is provided for a portion of a rail track (T) having a first and a second opposing track (R1, R2), each supported by at least one sleeper (TI) and a material ballast (BM). As is known, the railroad (T) is constructed with materials suitable to support a train (TR) on the track, which typically includes multiple spaced sleepers (TI) that support the tracks (R1, R2). In order for the sleepers (TI) to be supported and adequate drainage to be provided, the sleepers (TI) are positioned on a ballast material (BM), such as gravel, stone, rocks, sand, earth material, and the like.
    [0019] [019] Continuing to make reference to the form of incorporation of fig. 1, system 100 includes at least one power module 10 having a first electrical connection 12 to the first rail (R1), programmed, adapted or configured to apply a direct current voltage to the first rail (R1), and a second connection electrical 14 with the second rail (R2), programmed, configured or adapted to apply a direct current voltage to the second rail (R2). System 100 further includes at least one shunt diode array 16 positioned at a distance from at least one power module 10. At least one measuring device 18 is provided, being programmed, configured or adapted to detect or measure the current resulting from the application of the direct current voltage of the first electrical connection 12 and the second electrical connection 14.
    [0020] [020] In addition, at least one controller 20 [such as a computer, a controller on board the train (TR), a train management computer (TR), a remote server, a dispatch center, a central controller , a track interface unit, a programmable switching device or arrangement, and / or any suitable computing device, positioned locally or remotely] is in direct or indirect communication with at least one power module 10 and with at least one device measurement 18, and at least one controller 20 is programmed, configured or adapted to: (i) cause at least one application of a direct current voltage of a first polarity on the rail (T), through the first electrical connection 12 and the second electrical connection 14; (ii) determining the current resulting from the application step (i), using at least one measuring device 18; (iii) causing at least one application of a DC voltage of a second polarity on the rail (T), through the first electrical connection 12 and the second electrical connection 14; (iv) determining the current resulting from the application step (iii), using at least one measuring device (18); and (v) determining the presence or absence of an interruption in at least one of the first rail (R1) and second rail (R2), based, at least partially, on the current determined in steps (ii) and (iv). In a preferred and non-limiting embodiment, at least one controller 20 is positioned locally, that is, at, or close to, at least one power module 10 and at least one measuring device 18, being programmed, configured or adapted to perform some or all of steps (i) to (v), such as (in a preferred and non-limiting form of incorporation) steps (i) to (iv). Accordingly, the determination step (v) can take place locally or remotely, performed by at least one controller 20 or by some other computer in the system (as discussed above).
    [0021] [021] As discussed above, the system 100 presently claimed has a particular application in connection with the detection of broken tracks in larger sections of the railway (T). Consequently, and in another preferred and non-limiting embodiment, the distance between at least one power module 10 and at least one shunt diode array 16 is about 20 km. In another preferred and non-limiting embodiment, at least one power module 10, at least one measuring device 18, and / or at least one controller 20, or any combination of these, is integrated with all or part of it at least one existing rail device, electrically powered. For example, the existing electrically powered rail device can be a switching device or arrangement, a radio device, a track device, and / or a track interface unit, or any related combination. By integrating some or all of the components of system 100 with an existing electrically powered rail device, new installations and electrical units will not be required. This results in a reduction in installation and maintenance costs, as well as an overall decrease in the complexity and operation of the system and communication.
    [0022] [022] In another preferred and non-limiting embodiment, the direct current voltage applied in at least one of the application steps (i) and (iii) includes, or is in the form of, a fixed voltage (for example, a programmed and substantially constant voltage), a configurable voltage (for example, a user-configurable voltage, which can be programmed or controlled via at least one controller 20), an adjustable voltage [for example, a voltage that is manual and / or dynamically adjustable (or selectable) based on application and environment], and / or a voltage pulse (for example, a voltage pulse having a programmable, configurable, adjustable, fixed and / or dynamic width and / or pattern) , or any related combination. For example, and in a preferred and non-limiting form of incorporation, the DC voltage is in the range of about 3 Volts to approximately 12 Volts.
    [0023] [023] In another preferred and non-limiting embodiment, at least one of the application steps (i) and (iii) includes the application of at least one pulse of direct current. In another preferred and non-limiting embodiment, at least one DC pulse includes or is in the form of: a fixed voltage, a configurable voltage, an adjustable voltage, a fixed polarity (for example, a programmed and specified polarity) , a configurable polarity (for example, a user-configurable polarity, which can be programmed or controlled via at least one controller 20), an adjustable polarity [for example, a polarity that is manual and / or dynamically adjustable (or selectable) based on application and environment], a fixed pulse width (for example, a programmed and specified pulse width), a configurable pulse width (for example, a user configurable pulse width, which can be programmed or controlled via at least one controller 20), an adjustable pulse width [for example, a dynamically and / or manually adjustable (or selectable) pulse width based on the application and in the environment), a fixed timing pattern (for example, a programmed and specified timing pattern), a configurable timing pattern (for example, a user-configurable timing pattern, which can be programmed or controlled via at least a controller 20), an adjustable timing pattern [for example, a timing pattern that is manual and / or dynamically adjustable (or selectable) based on the application and the environment], a fixed time period (for example, a period programmed and specified time between two pulses or groups of pulses), a configurable time period (for example, a user-configurable time period between two pulses or groups of pulses, which can be programmed or controlled via at least one controller 20), an adjustable time period [for example, a time period between two pulses or groups of pulses, which is manually and / or dynamically adjustable (or selectable) based on the application and am environment], a fixed number of pulses (for example, a programmed and specified number of pulses in a group or set of pulses), a configurable number of pulses (for example, a number of pulses configurable by the user, in a group or set of pulses, which can be programmed or controlled via at least one controller 20), and / or an adjustable number of pulses [for example, a number of pulses in a group or set of pulses, which is manual and / or dynamically adjustable (or selectable) based on application and environment], or any related combination.
    [0024] [024] In another preferred and non-limiting embodiment, at least one direct current pulse includes or is in the form of multiple direct current pulses, with opposite polarity between at least two pulses of the plurality of direct current pulses. In an exemplary embodiment, at least one DC pulse includes or is in the form of multiple DC pulses, having a pulse width in the range of about 80 milliseconds to approximately 120 milliseconds. In another form of exemplary embodiment, at least one direct current pulse includes or is in the form of multiple direct current pulses, having a pattern of synchronism between direct current pulses in the range of about 200 milliseconds to approximately 300 milliseconds. In yet another form of exemplary embodiment, at least one DC pulse includes or is in the form of multiple DC pulses, which are pulsed for a period of time in the range of approximately 5 seconds to about 20 seconds.
    [0025] [025] In a preferred and non-limiting embodiment, the DC voltage of the first polarity and DC voltage of the second polarity are substantially identical. In another preferred and non-limiting form of incorporation, the direct current voltage of the first polarity and the direct current voltage of the second polarity are programmed, configured or established based, at least partially, on at least one of the following characteristics: ( i) the distance between at least one power module 10 and at least one shunt diode array 16; (ii) conditions of the ballast material (BM) [for example, humidity conditions, dry conditions, low temperature conditions, high temperature conditions, type of ballast material (BM) and / or the like]; and / or (iii) rail conditions (T) or sleepers (Ή) [for example, humidity conditions, dry conditions, low temperature conditions, high temperature conditions, type or age of the rail (T) or sleepers (ΊΊ), and / or similar]; (iv) environmental conditions (rain, snow, dry weather, low temperature, high temperature, and / or similar); or any related combination.
    [0026] [026] In another preferred and non-limiting embodiment, at least one measuring device 18 includes, or is in the form of, at least one resistor and / or at least one current sensor. In particular, at least one measuring device 18 is programmed, configured or adapted to detect or measure the current after applying a voltage by at least one supply module 10, via the first electrical connection 12 and / or the second electrical connection 14. In another preferred and non-limiting form of incorporation, before the application step (i), at least one controller 20 is still programmed, configured or adapted to determine whether the rail (T), between at least one module of power 10 and at least one shunt diode array 16, is occupied by at least one wagon. For example, and using at least one measuring device 18 and / or some other current detection device, or using data or information obtained by at least one controller 20 from some other computer or computer system [such as a computer, train controller (TR), train management computer (TR), remote server, dispatch center, central controller, track interface unit, programmable switching device or arrangement , and / or any suitable computing and device, locally or remotely positioned], it can be determined whether a section or portion of the railway (T) is occupied by a train (TR), a wagon, etc. If it is determined that the section or portion of the railway (T) is occupied, so at least one controller 20 prevents the application of voltage and the resulting interruption determination method described above, until the section or portion of the railway (T) is unoccupied.
    [0027] [027] In another preferred and non-limiting form of incorporation, and as illustrated in the schematic form in fig. 2, system 100 includes at least one communication device programmed, configured or adapted to transmit system data, directly or indirectly, to at least one remote computer [for example, a computer, a controller on board the train (TR) , a train management computer (TR), a remote server, a dispatch center, a central controller, a track interface unit, a programmable switching device or arrangement, and / or any suitable computing device]. This system data, which can include any data (raw or processed) used, obtained and / or determined by at least one controller 20, can then be used to make certain other train operational and traffic control decisions . For example, any of these data [and / or the determinations made by at least one controller 20, such as whether there is an interruption in the rail (R1, R2)] can be used by the dispatching center and / or by the trains ( TR) that are traveling towards, or within, the section of railway track (T), for rerouting, braking, and / or other preventive measures or alarm-based operations.
    [0028] [028] With reference to fig. 3, and in another form of preferred and non-limiting embodiment, at least one communication device 22 can be programmed, configured or adapted to communicate directly or indirectly, along the tracks (R1, R2), with some other computer or system [for example, an onboard controller (OBC) of a train (TR), a track interface unit (WIU-Wayside Interface Unit), another controller 20, and / or similar). In addition, at least one communication device can be programmed, configured or adapted to communicate directly or indirectly, wirelessly, with some other computer or system [for example, a dispatch center (such as a remote server (RS - Remote Server), an onboard controller (OBC) for a train (TR), a track interface unit (WIU), another controller 20, and / or similar). In addition, and as discussed above, these other computers or systems may be part of, be integrated with or in communication with, any of the components of system 100 (or any component thereof), thus allowing the control and implementation of one or more steps (i) to (v) described above.
    [0029] [029] In a preferred and non-limiting form of incorporation, the determination step (v) includes: (a) determining the difference between the current determined in step (ii) and the current determined in step (iv); and (b) determining the presence or absence of an interruption in the first rail (R1) or the second rail (R2) of the railway (T), if the difference is less than a specified value or percentage. In another preferred and non-limiting form of incorporation, the determination step (b) includes determining the presence of an interruption in the first rail (R1) or the second rail (R2) of the railroad (T), if the current measured in the step of determination (ii) is substantially identical to the current measured in the determination step (iv). Furthermore, and in another preferred and non-limiting form of incorporation, the determination step (v) is based, at least partially: (i) on the distance between at least one power module 10 and at least one bridge diode arrangement ( shunt) (16); (ii) in a condition of the ballast material (BM); (iii) in a condition of the railroad (T); and / or (iv) in an environmental condition; or any related combination.
    [0030] [030] In yet another preferred and non-limiting form of incorporation, at least one of steps (i) to (v) [and, in a preferred and non-limiting form of incorporation, all steps (i) - (v) ] is implemented based on the receipt, by at least one controller 20, of: (1) a command from at least one remote computer or remote server (RS); (2) a command from at least one remote computer or remote server (RS) before issuing a movement authorization for a specified train (TR); (3) a command from at least one remote computer or remote server (RS) for the specified train (TR), before it enters the rail portion (T); and / or (4) a command from at least one remote computer or remote server (RS) for the specified train (TR), after it leaves the rail portion (T); or any related combination. In another preferred and non-limiting form of incorporation, at least one of steps (i) to (v) [and, in a preferred and non-limiting form of incorporation, all steps (i) to (v)] are implemented on the basis of in: a specified schedule (for example, at specific times of the day, at specific intervals, and / or similar); a configurable schedule (a user-configurable or user-adjustable schedule); a specified time period (for example, specific periods or time intervals); a configurable time period (for example, a user configurable or user adjustable time period); rail data (for example, rail conditions); train data [eg train conditions (TR)]; environment data (temperature, surrounding environment, and / or similar); and / or condition data (for example, based on specific conditions or parameters); or any related combination. In yet another preferred and non-limiting form of incorporation, at least one of steps (i) to (v) [and, in a preferred and non-limiting form of incorporation, all steps (i) to (v)] are implemented as a train (TR) travels towards the rail portion (T).
    [0031] [031] In another preferred and non-limiting form of incorporation, and as illustrated in fig. 4, the broken rail detection system 100 is used in connection with a specified portion of a rail track (T). The system includes: a first power module 10-1 positioned at a first end (El) of the rail portion (T), having (1) a first electrical connection 12-1 with the first rail (R1), configured for applying a DC voltage to the first rail (R1), and (2) a second electrical connection 14-1 to the second rail (R2), configured to apply a DC voltage to the second rail (R2); a first shunt diode array 16-1 positioned at a distance from the first end (El) of the rail portion (T); a first measuring device 18-1 programmed, configured or adapted to detect or measure the current resulting from the application of the direct current voltage of the first electrical connection 12-1 and the second electrical connection 14-1; and a first controller 20-1 in direct or indirect communication with the first power module 10-1 and the first measuring device 18-1, programmed, configured or adapted to: (i) cause at least one voltage application direct current of a first polarity in the railroad (T), through the first electrical connection 12-1 and the second electrical connection 14-1; (ii) determine the current resulting from the application step (i) using the first measuring device 18-1; (iii) cause at least one application of a DC voltage of a second polarity on the rail (T), through the first electrical connection 12-1 and the second electrical connection 14-1; (iv) determine the current resulting from the application step (iii) using the first measuring device 18-1; and (v) determining the presence or absence of an interruption in at least one of the first rail (R1) and second rail (R2) in a first portion (P1) of the rail portion (T), based, at least partially , in the current determined in steps (ii) and (iv).
    [0032] [032] Continuing to make reference to the form of incorporation of fig. 4, system 100 also includes: a second power module 10-2 positioned at a second end (E2) of the rail portion, having (1) a first electrical connection 12-2 with the first rail (R1), configured to apply a direct current voltage to the first rail (R1); and (2) a second electrical connection 14-2 with the second rail (R2), configured to apply a direct current voltage to the second rail (R2); a second shunt diode array (16-2) positioned at a distance from the second end (E2) of the rail portion (T); a second measuring device 18-2 programmed, configured or adapted to detect or measure the current resulting from the application of the direct current voltage of the first electrical connection 12-2 and the second electrical connection 14-2; and a second controller 20-2 in direct or indirect communication with the second power module 10-2 and the second measuring device 18-2, programmed, configured or adapted to: (i) cause at least one voltage application direct current of a first polarity in the railroad (T), through the first electrical connection 12-2 and the second electrical connection 14-2; (ii) determine the current resulting from the application step (i), using the second measuring device 18-2; (iii) cause at least one application of a DC voltage of a second polarity on the railway (T), through the first electrical connection 12-2 and the second electrical connection 14-2; (iv) determine the current resulting from the application step (iii), using the second measuring device 18-2; and (v) determining the presence or absence of an interruption in at least one of the first rail (R1) and second rail (R2) in a second portion (P2) of the rail portion (T), based, at least partially , in the current determined in steps (ii) and (iv). In addition, at least one insulating joint 24 is positioned between the first shunt diode arrangement 16-1 and the second shunt diode arrangement 16-2, configured to prevent electrical communication between the first portion (P1) and the second portion (P2) of the railway (T).
    [0033] [033] In an additional preferred and non-limiting form of incorporation, a method is provided for detecting a broken rail on a portion of a rail track (T) having a first and a second opposing rail (R1, R2), each supported at least one sleeper (TI) and one ballast material (BM). The method includes: (i) causing at least one application of a DC voltage of a first polarity on the rail (T), through a first electrical connection 12 to the first rail (R1), and through a second electrical connection 14 to the second track (R2); (ii) determine the current resulting from the application step (i); (iii) causing at least one application of a DC voltage of a second polarity on the rail (T), through the first electrical connection 12 and the second electrical connection 14; (iv) determine the current resulting from the application step (iii); and (v) determining the presence or absence of an interruption in at least one of the first rail (R1) and second rail (R2), based, at least partially, on the current determined in steps (ii) and (iv).
    [0034] [034] In an exemplary embodiment, and within each station or part of the railway (T), conventional direct current or encoded direct current circuits can be used in the spirit and context of the present invention. In a form of incorporation, the broken rail detection system 100 is particularly applicable for detecting broken rail (R1, R2) between stations 26, that is, in a structural location (optionally pre-existing) that includes or integrates an array of power module 10 / measuring device 18 / controller 20 (as discussed above), with lengths up to, or greater than, 30 km.
    [0035] [035] Accordingly, in a preferred and non-limiting form of incorporation, a key objective of the present invention, which relates to the initial costs and the life cycle, is to avoid the need to establish any new installation sites in the via (outside the station areas) having active electronics, with the associated need for energy. Consequently, and as discussed above, depending on the length of the rail portion (T), one or more arrangements (or stations 26) of power module 10 / measuring device 18 / controller 20 can be used. of a station 26 is illustrated in fig. 1, while the use of two such stations 26 is illustrated in fig. 4. It is anticipated that the shunt diode arrangement 16 can be inserted (buried) in the ballast material (BM), connected to a sleeper (TI), and / or mounted inside a small pedestal, without the need for no external power source. In addition, and in a preferred and non-limiting form of incorporation, the boundaries of the railroad at the ends of the station can be defined by insulated joints 24 in the railroad circuits of the switching machine.
    [0036] [036] In another example of a form of incorporation, the power module 10, the measuring device 18 and the controller 20 together form a part of the station 26, which, as discussed above, represents components that can be coupled, operational or integrated, with an existing electrical device, such as an arrangement or communication device. In a preferred and non-limiting form of incorporation, each station 26 acts to apply a direct current voltage across the rail (T) with a fixed pulse width, a fixed pulse synchronization pattern, and alternating pulse polarities, using the first electrical connection 12 and the second electrical connection 14. The voltage can be fixed or adjustable, based on site selection [for example, based on length and ballast material (BM) conditions]. In this exemplary embodiment, the voltage is in the range of approximately 3 Volts to about 12 Volts, and the pulse widths are about 100 milliseconds wide, with 200 to 300 milliseconds between the pulses. These values are similar to those existing in the coded CC railroad systems, and were established to obtain the maximum performance along the length of the track circuits. The slow coding rate minimizes the effect of the track inductance (R1, R2). Continuing to make reference to this form of exemplary incorporation, and as illustrated in the schematic form in fig. 5, an example of a pulse scheme for use in the method and system 100 includes two positive polarity pulses having 100 milliseconds, with 300 milliseconds between these pulses, and after another 200 millisecond interval, two negative polarity pulses occur, having two pulse width of 100 milliseconds, with 300 milliseconds between the pulses.
    [0037] [037] Still with reference to this preferred and non-limiting form of incorporation, the positive and negative voltages are substantially identical, and are in the range of about 3 Volts to approximately 10 Volts. As discussed, this voltage can be configurable or adjustable, with respect to each application, and based, at least partially, on the length of the rail track and the conditions of the ballast material (BM), for example, with a higher voltage for longer rail circuits and lower ballast material (BM) conditions. Although in this form of incorporation the pulse pattern is relatively simple, it is envisaged that pulse width and timing between pulses can be used as a validity check when the current is measured, to identify any other energy or noise inputs. In this form of incorporation, station 26 (or its specific components) would normally be de-energized, and would only need to be on for about ten seconds to perform a check, according to the method currently invented, or when optionally requested to do so by a remote computer or a remote server (RS). This would provide about twenty pulses at each polarity for current measurement, and comparisons between pulses, which would reduce the impact of intermittent noise conditions. It should be noted that there are many variations in potential pulse widths and patterns, which can be used to obtain the same measurement results.
    [0038] [038] In another preferred and non-limiting form of incorporation, the general rail circuit is configured in a serial mode, with the ability to measure current at the same location as the transmitter. Consequently, a resistor can be used to measure the voltage drop, or a current sensor can be used on the return line. As discussed, measuring device 18 (together with controller 20) is used to measure and / or determine the impedance of the total track circuit, optionally when it is confirmed that the track is empty, based on information and relative data the occupation of the railroad, such as those coming from the dispatch center or similar. It is also foreseen that adjacent stations 26 can be coordinated, for example through commands, and controlled by the dispatch center or by some other remote server (RS), so that the method is implemented only at one end (E1, E2) at a time. This avoids unwanted measurements based on the energy input from the adjacent station 26.
    [0039] [039] In another form of preferred and non-limiting incorporation, controller 20 includes or is in the form of a microcontroller, which controls the application of pulses and the measurement of current on the railroad, optionally with data tests managed from the central dispatch or remote server (RS). The collected or determined data can also be transmitted to the dispatch center or some remote computer or remote server (RS), as discussed above. In this form of incorporation, the determination of interruptions in the tracks will be made at the dispatch center [or at the remote computer or remote server (RS)], that is, in step (v), which can then reflect or transmit this data for the creation and issuing movement permits for the relevant trains (TR).
    [0040] [040] In another preferred and non-limiting form of incorporation, system 100 measures the total impedance of the rail track with both polarities. The normal measurements without interruptions on the tracks will show a difference in the impedance measurement between the positive and negative polarities, which indicates that the circuit has reached the railroad bridge (shunt) 16 diode arrangement, that is, from the first connection electrical 12 to the second electrical connection 14 via the bridge diode arrangement 16. In one polarity, a very low resistance, for example about 0.5 Ohm, will be detected or determined, and in the opposite polarity an increased impedance will be detected or determined , which in practice will be substantially equivalent to the conditions of the ballast material (BM). Consequently, system 10 compensates for the variable conditions of the ballast material (BM). In this form of incorporation, if there is an interrupted rail (R1, R2) within the circuit, before the location of the bridge diode arrangement (shunt) 16, the impedance measurement will be the same in both the positive and negative polarities.
    [0041] [041] It should be noted that conventional railroad circuits of direct coded current applied to continuously welded tracks are effectively limited to about six kilometers. This limitation is based, at least partially, on the need to provide a vital bridge (shunt) and an interrupted rail detection within a wide range of ballast material conditions. In accordance with the present invention, and in a preferred and non-limiting form of incorporation, there is no need for bridge detection (shunt), and testing and verifying the circuit of the rail portion (T) can be implemented when the portion of the railway (T) is not occupied. Consequently, the measurement of the impedance in both polarities, with a diode arrangement (shunt) 16 defining the external circuit, allows the effective compensation of the changes in the ballast resistance. Accordingly, and in this form of incorporation, the system 100 allows the detection of broken tracks over much greater distances, for example about 15 km or more, with a wide range of ballast material types (BM) and material conditions ballast (BM).
    [0042] [042] In another preferred and non-limiting embodiment, and as illustrated in the schematic form in fig. 6, the rail circuit [or the rail portion (T)] to be monitored operates on the illustrated electrical network, where R is the resistance of the welded rail to the continuously welded rail (which can be approximately 0.035 Ohms / km). It should also be noted that inductance has a minimal impact for DC or low frequency alternating current voltages (for example, with 100 milliseconds pulse width). Furthermore, and still referring to fig. 6, B represents the resistance of the ballast material (BM), which is typically in the range of about 2 Ohms / km to approximately 10 Ohms / km, with the possibility of reaching as low as 1 Ohm under heavy rain conditions . There is also a capacitance factor between the rails, but this factor is negligible for DC and low frequency alternating current circuits. The voltage is applied with the current being measured at the opposite end to the shunt diode arrangement 16, to determine the impedance (I) of the total circuit.
    [0043] [043] The resistance of the diode (D) will vary according to the type selected and the voltage across the diode, but it can be approximately 0.5 Ohm in the direct direction, in a form of incorporation. In the reverse direction, the resistance of the diode (D) will be very high, with the total effective resistance being close to the resistance of the ballast (B). In conditions without any interrupted rail, the main variable is the ballast resistance (B), which will vary between dry and wet conditions (rain). The resistance of the ballast (B) will not necessarily be uniform over a length of 15 kilometers, for several reasons. However, it is clear that the resistance of the ballast (B) will, on average, substantially the same value, regardless of the polarity of the measurement voltage, up to the location of the shunt diode arrangement 16. Accordingly, in this form of incorporation, a key need is the ability to detect the shunt diode array 16, for example, positioned 15 kilometers away, or more, from the voltage application site, based on the comparison of impedance differences (I ) of the total circuit between voltage polarities.
    [0044] [044] In an exemplary embodiment, and as shown in Table 1 below, the impedance calculated with different ballast conditions provides the following calculated values, as seen at the end of the voltage source, for each polarity.
    [0045] [045] It should be noted that the higher ballast material (BM) conditions lead to easier detection of the rail circuit impedance between positive and negative voltage applications, and the difference decreases with a drop in the resistance of ballast (B). However, even assuming a lower resistance to ballast (B), for example 1 Ohm / km, there is a measurable difference that must be in the range of reliable detectability, using conventional measurement techniques. In this preferred and non-limiting form of incorporation, it should also be noted that the measurement of impedance or absolute current is not as important as the comparison between positive and negative sequential DC pulses. Multiple rounds of positive and negative pulse volleys can be measured to increase the detectability of small differences, as reflected in the worst case, with low ballast material (BM) conditions.
    [0046] [046] In another preferred and non-limiting form of incorporation, any interruption of the rail will effectively make the diode arrangement (shunt) 16 out of the circuit, causing the positive and negative impedance measurements to be substantially identical. For any installation, and with a known track length and ballast material (BM) conditions, it is possible that the system 100 "learns" the normal variations of the ballast material (BM). In conditions of high ballast material (BM), this results in the determination of a greater distance between the positive and negative readings to indicate a normal condition, that is, uninterrupted track. This "learning" can be used to increase accuracy and minimize false positive alarms, and can also be useful in application to other stations 26 or systems 100 implemented in other parts of the track in the rail network having distances and conditions of ballast material (BM) similar.
    [0047] [047] In another preferred and non-limiting form of incorporation, station 26 (or some component thereof) is normally de-energized, with the test or "verification" mode being controlled by the dispatch center or some remote server (RS ), based on the movement of trains. The average energy demand of system 100 is expected to be relatively low. In addition, it should also be understood that the measurements and determinations discussed above can be made or implemented based on certain conditions of movement of the trains. In a preferred and non-limiting form of incorporation, these conditions of movement of the trains are as follows: (1) before the dispatch center issues a movement authorization for the block, it can be verified that each section of the railway is not occupied, in the blocks that cover the intended authorization, do not have any broken trails; (2) after the dispatch central issues the movement authorization, and immediately before the train (TR) enters the rail circuit (if more than a few minutes pass after the movement authorization is issued), a check can be done again, to make a measurement of the ballast material (BM). If this check shows an interrupted track condition (which is an unusual condition, if the track is previously empty, without other train movements), the dispatch center (and / or controller 20) can send an alarm to the train ( TR) (and this could also constitute a speed restriction linked to movement on the broken rail of the section of the railway); and (3) after the train (TR) completes the movement and leaves the circuit, another check can be carried out to see if there was an interruption of the track under the train (TR), where, if the verification indicates an interrupted track, it will be a new effective circuit impedance is also measured to provide an estimated location of the rail interruption site, using the previous check as an estimate of intact (ie, non-interrupted) rail impedance as a calibration point, to estimate the interruption location.
    [0048] [048] In another preferred and non-limiting form of incorporation, a railroad maintenance mode can also be provided to work interactively with Hy-Rail vehicles (with wheels for rails), or locomotives or trains with restricted speed, to assist in locating rail interruption locations with greater precision. In this form of incorporation, frequent impedance measurements can be made (one measurement approximately every five seconds) while the vehicle moves over the circuit. When passing over the location of the interruption, there is a change in the step function in the impedance measurement, which can be compared with the location of the vehicle.
    [0049] [049] Thus, the present invention provides an improved system and method for detecting broken tracks in railway systems, including, but not limited to, CBTC applications and systems. The system and method presently invented are particularly applicable and useful in connection with the detection of long broken tracks on the railroad, with active electronics and energy and being necessary only at one end of the circuit. This favors single sections of railroad blocks over a long distance, for example, with 30 km or more, between switching positions to be monitored from the same equipment locations used for switching control. In addition, the use of the shunt diode array 16, combined with double polarity encoded direct current pulses, provides the ability to automatically compensate for large changes in ballast resistance to support detection at maximum length. Furthermore, the measurement of railroad impedance after a rail interruption occurs, compared to the last measurement before the interruption event, provides an effective method for estimating the location of the interruption within the circuit. In addition, and in a form of incorporation, the integration with a CBTC system provides a logic for making measurements when it is known that the railway circuits are not occupied, and also provides the ability to improve the precise location of the rail interruptions by measuring impedance changes while a train or maintenance vehicle is moving over the circuit. Additionally, the system and method presently invented are useful in connection with light traffic applications, with the benefit of co-locating the electronics and power needed with the switching device or arrangement locations (as well as support for detecting broken tracks) for long sections of rail, between switching devices and arrangements, without the need to use separate electronics, compartments, or power between them). In addition, the system and method described above can be effectively implemented in a territory without signaling according to the appropriate track guarantee control procedures (TWC - Track Warrant Control).
    [0050] [050] Although the invention has been described in detail for illustrative purposes, based on what is currently considered to be the most practical and preferred forms of incorporation, it should be understood that such details serve only those purposes and that the invention is not limited to the described forms of incorporation, and, on the contrary, it is intended to cover the modifications and equivalent arrangements that are within the spirit and scope of the attached claims. For example, it should be understood that the present invention contemplates that, as far as possible, one or more characteristics of any form of incorporation can be combined with one or more characteristics of any other form of incorporation.
    权利要求:
    Claims (25)
    [0001]
    Detection system of broken tracks (100) for a portion of a rail track having a first and a second opposing track, each supported by at least one sleeper (TI) and a rail ballast material (BM), the system being characterized for understanding: a power module (10) positioned at the first end (E1) of the rail portion, the power module (10) comprising: 1) a first electrical connection (12) with the first rail (R1), configured to apply a DC voltage to the first rail (R1), and 2) a second electrical connection (14) to the second rail (R2), configured to apply a DC voltage to the second rail (R2); at least one bridge diode arrangement (16) positioned at a distance from at least one power module; at least one measuring device (18) configured to detect or measure the current resulting from the application of direct current voltage from the first electrical connection (12) and the second electrical connection (14); and at least one controller (20), in direct or indirect communication with at least one power module (10) and with at least one measuring device (18), programmed or configured to: (i) cause at least one application of a DC voltage of a first polarity on the rail (T), through the first electrical connection (12) and the second electrical connection (14); (ii) determining the current resulting from the application step (i), using at least one measuring device (18); (iii) cause at least one application of a DC voltage of a second polarity on the railway (T), through the first electrical connection (12) and the second electrical connection (14); (iv) determining the current resulting from the application step (iii), using at least one measuring device (18); and (v) determine the presence or absence of an interruption in at least one of the first (R1) and second (R2) tracks, based, at least partially, on the current determined in steps (ii) and (iv).
    [0002]
    System (100), according to claim 1, characterized in that the distance between at least one power module and at least one bridge diode arrangement is up to approximately 20 km.
    [0003]
    System (100) according to claim 1, characterized by at least one of the following elements: o at least one power module (10), at least one measuring device (18), at least one controller (20 ), or any combination thereof, be integrated with or all or part of at least one existing electrically powered rail device.
    [0004]
    System (100) according to claim 3, characterized in that at least one existing electrically powered rail device is at least one of the following: a switching device or arrangement, a radio device, a track device, an interface unit track, or any related combination.
    [0005]
    System (100) according to claim 1, characterized in that the direct current voltage applied in at least one of the application steps (i) and (iii) comprises at least one of the following: a fixed voltage, a configurable voltage, an adjustable voltage, a voltage pulse, or any combination thereof.
    [0006]
    System (100) according to claim 5, characterized in that the DC voltage is between about 3 volts and approximately 12 volts.
    [0007]
    System (100) according to claim 1, characterized by at least one of the application steps (i) and (iii) comprising the application of at least one pulse of direct current.
    [0008]
    System (100) according to claim 7, characterized in that at least one direct current pulse comprises at least one of the following: a fixed voltage, a configurable voltage, an adjustable voltage, a fixed polarity, a configurable polarity, a polarity adjustable, a fixed pulse width, a configurable pulse width, an adjustable pulse width, a fixed timing pattern, a configurable timing pattern, an adjustable timing pattern, a fixed time period, a configurable time period, an adjustable time period, a fixed number of pulses, a configurable number of pulses, an adjustable number of pulses, or any combination thereof.
    [0009]
    System (100) according to claim 8, characterized in that at least one direct current pulse comprises a plurality of direct current pulses, with opposite polarity between at least two of the plurality of direct current pulses.
    [0010]
    System (100) according to claim 8, characterized in that at least one DC pulse comprises a plurality of DC pulses, with a pulse width in the range of approximately 80 milliseconds to about 120 milliseconds.
    [0011]
    System (100) according to claim 8, characterized in that at least one DC pulse comprises a plurality of DC pulses, with a synchronization pattern between DC pulses in the range of approximately 200 milliseconds to approximately 300 milliseconds .
    [0012]
    System (100) according to claim 8, characterized in that at least one direct current pulse comprises a plurality of direct current pulses, which are pulsed for a period of time in the range of approximately 5 seconds to approximately 20 seconds.
    [0013]
    System (100) according to claim 1, characterized in that the direct current voltage of the first polarity and the direct current voltage of the second polarity are substantially identical.
    [0014]
    System (100) according to claim 1, characterized in that the direct current voltage of the first polarity and the direct current voltage of the second polarity are configured based, at least partially, on at least one of the following characteristics: (i ) the distance between at least one power module (10) and at least one bridge diode arrangement (16); (ii) a condition of the rail ballast material; (iii) a condition of the railroad; (iv) an environmental condition, or any combination thereof.
    [0015]
    System (100) according to claim 1, characterized in that at least one measuring device is at least one of the following: at least one resistor, at least one current sensor, or any combination thereof.
    [0016]
    System (100) according to claim 1, characterized in that, before the application step (i), the at least one controller (20) is programmed or further configured to determine whether the railroad, between at least one module power (10) and at least one bridge diode arrangement (16), is occupied by at least one wagon.
    [0017]
    System (100) according to claim 1, characterized in that it further comprises at least one communication device programmed or configured to transmit system data, directly or indirectly, to the at least one remote computer.
    [0018]
    System (100) according to claim 1, characterized in that the determination step (v) comprises: (a) determine the difference between the current determined in step (ii) and the current determined in step (iv); and (b) determine the presence or absence of an interruption on the first rail or the second rail track, if the difference is less than a specified value or percentage.
    [0019]
    System (100) according to claim 18, characterized in that the determination step (b) comprises determining the presence of an interruption in the first rail (R1) or the second rail (R2) of the railroad, if the current measured in the determination step (ii) is substantially identical to the current measured in the determination step (iv).
    [0020]
    System (100) according to claim 1, characterized in that the determination step (v) is based, at least partially, on at least one of the following: (i) the distance between the at least one power module (10 ) and at least one bridge diode array (16); (ii) a condition of the rail ballast material; (iii) a condition of the railroad; (iv) an environmental condition; or any combination thereof.
    [0021]
    System (100) according to claim 1, characterized in that at least one of the steps (i) to (v) is implemented based on the receipt, by at least one controller (20), of at least one of the following: 1 ) a command from at least one remote computer; 2) a command from at least one remote computer before issuing a movement authorization for a specified train (T); 3) a command from at least one remote computer for the specified train (T), before it enters the rail portion; 4) a command from at least one remote computer for the specified train (T), after it leaves the portion of the railway; or any combination thereof.
    [0022]
    System (100) according to claim 1, characterized in that at least one of the steps (i) to (v) is implemented based on at least one of the following characteristics: a specified schedule, a configurable schedule, a period of time specified period of time, track data, train data, environment data, condition data, or any combination thereof.
    [0023]
    System (100), according to claim 1, characterized in that at least one of the stages (i) to (v) is implemented while a train travels towards, or within, the portion of the railroad.
    [0024]
    Detection system for broken tracks for a portion of a rail track having a first (R1) and a second (R2) opposite tracks, each supported by at least one sleeper (TI) and a rail ballast material (BM), the system being characterized by understanding: a first power module (10) positioned at a first end (E1) of the rail portion and featuring: 1) a first electrical connection (12) with the first rail (R1), configured to apply a direct current voltage to the first rail (R1), and 2) a second electrical connection (14) to the second rail (R2), configured to apply a direct current voltage to the second rail (R2); a first bridge diode arrangement (16), positioned at a distance from the first end (E1) of the rail portion; a first measuring device (18), configured to detect or measure the current resulting from the application of the direct current voltage from the first electrical connection (12) and the second electrical connection (14); a first controller (20), in direct or indirect communication with the first power module (10) and the first measuring device (18), programmed or configured to: (i) cause at least one application of a current voltage continuous first polarity on the rail, through the first electrical connection (12) and the second electrical connection (14); (ii) determine the current resulting from the application step (i), using the first measuring device (18); (iii) cause at least one application of a DC voltage of a second polarity to the railroad, through the first electrical connection (12) and the second electrical connection (14); (iv) determine the current resulting from the application step (iii), using the first measuring device (18); and (v) determining the presence or absence of an interruption in at least one of the first (R1) and second (R2) tracks in a first portion (P1) of the rail portion, based, at least partially, on the determined current in steps (ii) and (iv); a second power module (10) positioned at a second end (E2) of the rail portion, featuring: 1) a first electrical connection (12) with the first rail (R1), configured to apply a direct current voltage to the first rail (R1), and 2) a second electrical connection (14) to the second rail (R2), configured to apply a direct current voltage to the second rail (R2); a second bridge diode arrangement (16), positioned at a distance from the second end (E2) of the rail portion; a second measuring device (18), configured to detect or measure the current resulting from the application of direct current voltage from the first electrical connection (12) and the second electrical connection (14); a second controller (20), in direct or indirect communication with the second power module (10) and the second measuring device (18), programmed or configured to: (i) cause at least one application of a current voltage continuous first polarity on the rail, through the first electrical connection (12) and the second electrical connection (14); (ii) determine the current resulting from the application step (i), using the second measuring device (18); (iii) cause at least one application of a DC voltage of a second polarity to the railroad, through the first electrical connection (12) and the second electrical connection (14); (iv) determine the current resulting from the application step (iii), using the second measuring device (18); and (v) determining the presence or absence of an interruption in at least one of the first (R1) and second (R2) tracks in a second portion (P2) of the rail portion, based, at least partially, on the determined current in steps (ii) and (iv); and at least one insulating joint positioned between the first bridge diode arrangement (16) and the second bridge diode arrangement (16), configured to prevent electrical communication between the first and second portions of the rail portion.
    [0025]
    Method for detecting broken tracks on a portion of a railroad, for the operationalization of the method defined in claim 1 or 24, said railroad showing a first and second opposite railroad tracks, each supported by at least one sleeper (TI) and a material rail ballast (BM), the method being characterized by comprising: (i) cause at least an application of a direct current voltage of a first polarity on the railroad through a first electrical connection (12) to the first rail (R1), and through a second electrical connection (14) to the second rail (R2); (ii) determine the current resulting from the application step (i); (iii) cause at least one application of a DC voltage of a second polarity to the railroad, through the first electrical connection (12) and the second electrical connection (14); (iv) determine the current resulting from the application step (iii); and (v) determine the presence or absence of an interruption in at least one of the first (R1) and second (R2) tracks, based, at least partially, on the current determined in steps (ii) and (iv).
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    同族专利:
    公开号 | 公开日
    US9701326B2|2017-07-11|
    WO2016039789A1|2016-03-17|
    AU2014405896A1|2017-02-23|
    CA2957463A1|2016-03-17|
    BR112017004795A2|2017-12-12|
    US20160075356A1|2016-03-17|
    CA2957463C|2020-05-05|
    AU2014405896B2|2020-03-12|
    MX2017001139A|2017-05-11|
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    法律状态:
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-07-28| B09A| Decision: intention to grant|
    2020-12-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 11/12/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US14/484,672|US9701326B2|2014-09-12|2014-09-12|Broken rail detection system for railway systems|
    US14/484,672|2014-09-12|
    PCT/US2014/069725|WO2016039789A1|2014-09-12|2014-12-11|Broken rail detection system for railway systems|
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