• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    The invention provides a safety protection device for use in a full-height landing door comprising, inter alia: a laser emitter device, a laser deflector device, an optical signal receiving device and a device for analyzing and treatment ; wherein the laser emitter device sends directional laser signals to the laser deflector device; the laser deflector device deflects the directional laser signals at a predefined angle, under the control of the analysis and processing device, and forms at least one laser scanning sector; the optical signal receiving device receives reflected laser signals.
    公开号:BE1025827B1
    申请号:E2018/5434
    申请日:2018-06-22
    公开日:2019-07-25
    发明作者:Dan Su
    申请人:B.E.A. Electronics (Beijing) Co.,Ltd.；
    IPC主号:
    专利说明:

    BE2018 / 5434 SAFETY PROTECTION DEVICE
    FOR USE
    IN A FULL-HEIGHT LANDING DOOR
    Technical area
    The present invention relates to the technical field of automatic door sensors, in particular a safety protection device for use in a full height landing door.
    History of the invention
    With the acceleration of urbanization in recent years, the pressure on urban traffic is increasing, and more and more cities are starting to use rail transit, necessarily leading to a reduction in traffic pressure. The metro is one of the common means of urban rail transport. Compared with conventional rail transportation such as trains, Chinese high-speed trains (CRH) and high-speed trains, subways are usually built underground, and travelers usually wait on the platform before the trains subway trains arrive at the station, and since there are usually a lot of subway users, accidents are likely to occur as the platform is crowded. Therefore, platform doors for safety protection must be installed on the platforms of metros and certain CRH and high-speed trains. Common subway landing doors can be classified, depending on the door height, into full-height landing doors whose height exceeds the size of the general population, and half-height landing doors whose height is usually 1-1 , 5 meter. Some of the full height landing doors adopt a closed structure if necessary,
    BE2018 / 5434 i.e. the landing door is closed, and the platform and the rails are completely separated. Some of the full-height landing doors adopt an unclosed structure, that is to say that a ventilation gap is arranged between the top of the landing door and the top of the metro platform.
    Subways are handy for allowing people to travel, but they also cause certain potential safety hazards. In order to guarantee traffic safety, trains and landing doors must meet a certain limit requirement, so there must be an empty space between closed landing doors and train doors. Once a passenger is trapped in said empty space, a serious bodily injury will occur after the train starts.
    To avoid such a situation, in the prior art, a safety protection device is usually added in said empty space, but the microwave sensors are easily disturbed by movements of passengers or trains, and infrared sensors have poor accuracy of detection due to the strongly diverging angles of infrared light beams, and said sensors are easily influenced by strong radiation from trains. Comparatively, the laser sensors have a good accuracy and an anti-interference capacity, for example the photoelectric sensor having a
    Infrared LEDs, as disclosed in number 201220345332.X, the unit's light source
    A / D sampling LED, which uses infrared to form requests carrying the multiple groups of units and a detection light curtain, the light curtain being at the level of the empty space between the landing door and the train door, so as to function as a safety protection.
    BE2018 / 5434
    However, according to said technique, since multiple groups of infrared laser units are used, due to the limitation of the volumes of the infrared lasers themselves, the individual light beams in the laser light curtain of said units will have a large spacing between them, the generation of control signals thus usually follows the control rule at a single trigger point, namely as long as one or more light curtains has or have detected feedback signals, the sensor will generate control signals which will frequently result in unnecessary triggering, for example when objects such as paper or plastic bags are in empty space, and said objects are just on a certain laser path, the sensor will then generate alarm signals causing the landing door to open abnormally, which will successively cause accidents.
    In addition, the detection zone of such a type of sensor, in the prior art, must be predefined according to the size of the frame of the landing door. For example, the target user of the sensor is a landing door having a width of 4 meters and a height of 2.5 meters, a corresponding detection area which is 4 meters wide and 2.5 meters high, must then be predefined, while the position for fixing and installing said sensor must be strictly limited, otherwise a false trigger caused by the door frame or the floor tends to occur excessively.
    Summary of the invention
    The present invention aims to solve the following problem: the existing laser sensor used on the landing door, on the rail transit platform, is frequently triggered unnecessarily, and its area of
    BE2018 / 5434 detection must be predefined according to the size of
    The landing door frame, and
    The requirement regarding the installation position is very high, otherwise a false trigger caused by
    The door frame or floor tends to occur excessively, and the present invention provides a safety protection device for use in a full height landing door, which device comprises: a laser emitting device, a device laser deflector, an optical signal receiving device and an analysis and processing device. Here, the laser emitting device sends laser signals to the laser deflecting device. The laser deflector device deflects directional laser signals at a predefined angle, under the control of the analysis and processing device, and forms at least one laser scanning sector. The optical signal receiving device receives reflected laser signals and transmits said signals to the analysis and processing device.
    Alternatively, the laser deflector device can deflect two adjacent laser scanning sectors, to form sectors having an angle between them.
    In addition, the laser deflector includes a polygon mirror for deflecting laser signals, normal lines of polygon mirror surfaces on different planes, and mirror angles, which allow the laser scanning sectors to have angles between them, are arranged between the adjacent mirror surfaces.
    In addition, the mirror angles are 0.01 ° -10 °.
    Alternatively, the laser emitting device can emit more than 2 chains of laser signals which do not coincide with each other, and the laser deflector device deflects said more than 2 chains of
    BE2018 / 5434 laser signals which do not coincide with each other, to form laser scanning sectors which do not coincide with each other.
    Preferably, the safety protection device can form 2-10 laser scanning sectors having angles between each of them.
    Preferably, the angles between the laser scanning sectors having angles between them are 0.01 ° -10 °.
    Preferably, angles at the center of the laser scanning sectors are 0 ° -130 °.
    Preferably, the safety protection device is installed at the top of a door frame, at an entry and exit position of a full-height landing door, and makes its laser scanning sectors cover maximum entry and exit position of the landing door.
    In addition, the analysis and processing device comprises: a trigger distance analysis module, a scanning area adjustment module and a scanning signal analysis module.
    In addition, the trigger distance analysis module is used to analyze information from a distance from a trigger point generated in the laser scanning sector to the safety protection device.
    In addition, the scanning area setting module is used to set a profile of an area in the laser scanning area which generates valid feedback signals.
    In addition, the scanning area adjustment module includes the following analysis steps:
    IF. scanning in a safe environment.
    BE2018 / 5434
    52. recording of the distance information from the trigger point, at the time when each of the scanning points generates feedback signals.
    The valid feedback signals are trigger point feedback signals, signals whose distance from the trigger point is less than the trigger point distance information obtained in step S2.
    In addition, the scanning area adjustment module additionally comprises the following analysis steps:
    53, division of the laser scanning sector into a part close to the sensor and into a part remote from the sensor, using, as a limit, the information of the distance from the trigger point, obtained in step S2.
    In addition, the safe environment is one where the landing door is closed and the means of transport has completely left the platform or is about to enter the station.
    In addition, the security protection device of the present invention can make a determination regarding the safe environment, based on a factory setting or based on information provided by other dock systems.
    Preferably, said information provided by other platforms systems generally includes: information indicating whether the landing door is closed, and information indicating whether the metro has left the platform or is about to enter the station.
    In addition, the scanning signal analysis module does not analyze the trigger point feedback information obtained by scanning in the safe environment.
    In addition, an approach for analyzing the distance point information, in step S2, consists: first, in making statistics
    BE2018 / 5434 concerning the distance point trigger information, information collected in the safe environment for respective laser beams, as obtained in step S2; then selecting an average value of groups of data points which are most often repeated as a reference point; then, to compare said reference point, with a reference point in a previous safe period, and if they are distant from each other, replace the reference point in the previous safe period, by said reference point , and if they are close to each other, carry out the following determination step; finally, to determine an error value between said reference point and the reference point in the previous safe period, and if said error value is within a predefined error range, replace the reference point in the safe period earlier, by said reference point, and if said value exceeds the predefined error range, trigger an alarm.
    In addition, in the laser scanning area, the part near the sensor is a monitored area, and the valid feedback signals are trigger point feedback signals, generated in the monitored area. The safety protection device responds to trigger signals generated in the monitored area.
    In the laser scanning area, the remote part of the sensor is a safe area, and the safety protection device does not respond to trigger signals generated in the safe area.
    In addition, the scanning signal analysis module generates landing door control signals after analysis of the trigger point distance information obtained by the trigger distance analysis module.
    BE2018 / 5434
    In addition, the scanning signal analysis module comprises the following analysis steps:
    Step 1 determine if a trip is a valid trip based on the distance information from the trip point, and if it is yes, skip step 2, and if it is an invalid trip, do not respond to said trip signal .
    Step 2 on the basis of the trigger point information which results in a valid trigger, forming graphical information of a trigger zone consisting of trigger points, and determining if said graphical information conforms to a graphical structure of predefined human body, and if it is yes, generate a command signal, if it is not, go to step 3.
    Step 3 determine if an area of the graphical information obtained in step 2 exceeds one and if it is yes, generate a signal of it is no, generate no predefined threshold signal, command, and if command and finish analysis.
    Furthermore, an approach for determining whether said graphic information conforms to the predefined human body graphic structure, in step 2, consists of:
    (1) determining if the graphical information has a head-shoulder triangle, and if it is yes, generating the control signal, and if it is not, performing the following analysis step;
    (2) to determine if the graphical information has a graphical structure of a head-body-legs assembly, and if it is yes, generate the control signal, and if it is not, go to step 3 .
    Furthermore, the approach for determining whether said graphical information conforms to the predefined graphical structure of the human body, in step 2,
    BE2018 / 5434 consists: first, in defining more than two base points corresponding to each other, respectively in said graphical information and in said predefined human body graph; then, on the basis of said more than two base points corresponding to each other in said graphical information and in said predefined human body graph, to provide the graphical information at increased scale or at reduced scale according to a size which corresponds to the predefined human body graphic; finally, comparing the graphical information on an enlarged or reduced scale, with the predefined human body graph, to obtain a graphical profile error, and at generating the control signal if said error does not exceed a predefined threshold, and if said error exceeds the predefined threshold, go to step 3.
    In addition, the basic points in the graphical information and in the predefined human body graph are respectively as follows: the highest point and the lowest point in the graphical information and in the predefined human body graph, or the leftmost point and the rightmost point in the graphical information and in the predefined human body graph.
    In addition, an approach to compare the graphical information, to the predefined human body graph, to obtain the graphical profile error, consists: first, in setting more than two reference lines for comparison on the graphical information and on the predefined human body graphic. Then, use a point on the reference lines, as a reference point, to respectively obtain a distance A between said reference point and a point of intersection of the graphical information profile, and a distance B between said reference point and a point of intersection of the predefined human body graphic profile; finally,
    BE2018 / 5434 make a statistic for absolute values of differences between said distance A and said distance B on each of the reference lines, to obtain the graphical profile error.
    In addition, the analysis and processing device also includes a start-up control module, for controlling whether the safety protection device must send control signals to the landing door.
    In addition, the start-up control module can control the start and stop of the laser emitting device and of the laser deflection control module, so as to control whether the analysis device must generate corresponding control signals.
    Alternatively, the start control module can also control the start and stop of the scan signal analysis module, so as to control whether the analysis device must generate corresponding control signals.
    Alternatively, the start-up control module can also control a connection relationship, by signals, between the scanning signal analysis module and a landing door control device, so as to control whether control signals must be sent to the landing door.
    In addition, the analysis device further comprises: a laser deflection control module for controlling a deflection angle of the laser deflector device.
    In addition, the laser scanning sector is placed between the full height landing door and the means of transport.
    Alternatively, the laser scanning sector is parallel to a leaf of the full-height landing door.
    BE2018 / 5434
    Alternatively, the laser scanning sector forms an angle with the leaf of the full-height landing door, along a vertical or horizontal direction.
    Preferably, the laser scanning sector forms an angle of 0.01 ° -10 ° with the leaf of the full height landing door, along a vertical or horizontal direction.
    Furthermore, laser signals emitted by the laser emitting device are laser pulse signals.
    The present invention has at least one of the following advantages:
    1. The technical solution of the present invention uses the laser deflector device to continuously deflect, at a certain angle, optical signals emitted by the laser light source, thus forming laser curtains having, as desired, different densities, for meet the needs of different usage environments.
    2. The technical solution of the present invention uses graphical analysis to determine whether control signals should be generated, thus avoiding the possibility of false triggering, as in the prior art, by non-dangerous intruders such as bags in paper or plastic. At the same time, the sensitivity of the sensor for intruders of non-human form can be adjusted, as desired, by said solution, thereby reducing the possibility of false triggering by safe intruders.
    3. The technical solution of the present invention can adjust, by itself, the size of the monitored area, as desired, so as to adapt to full height landing doors having different sizes and profiles, and the relative degree of freedom of the installation position is high, and the possibility
    BE2018 / 5434 a false triggering of the sensor, by the door frame or the floor, can be effectively reduced.
    Brief description of the drawings
    The figure 1 is a structural diagram of protective device of security of this invention.The figure 2 is a schematic drawing of a
    installation position of the safety protection device of the present invention.
    Figure 3 is a structural diagram of a laser scanning sector in a predefined state of the security protection device of the present invention.
    Figure 4 is a structural diagram of a laser scanning sector in another predefined state of the security protection device of the present invention.
    Figure 5 is a schematic drawing of an intruder appearing in a monitored area of the security protection device of the present invention.
    Detailed description of the invention
    To further clarify the object, the technical solution and the advantages of the present invention, a more detailed description of the present invention will be taken into account, with reference to the drawings. It is understood that the specific embodiments described herein are provided simply to explain the invention, rather than to limit the present invention.
    Embodiment 1
    A safety protection device for use in a full height landing door is shown in FIG. 2, said safety protection device 2 being installed on a frame 3 of the landing door at a position of the door leaf. 1, and being fixed on a leftmost end
    BE2018 / 5434 at the top of the door leaf 1. As shown in FIG. 1, the safety protection device 2 comprises: a laser transmitter device, a laser deflector device, a device for receiving optical signals and a device for analysis and processing. Here, the laser emitting device sends directional laser signals to the laser deflecting device. The laser deflector device deflects directional laser signals at a predefined angle, under the control of the analysis and processing device, and forms a laser scanning sector 4. The optical signal receiving device receives reflected laser signals and transmits said signals to the analysis and processing device. The analysis and processing device comprises: a laser deflection control module, a trigger distance analysis module, a scanning area adjustment module and a scanning signal analysis module. The laser deflection control module is used to control a deflection angle of the laser deflector device. The trigger distance analysis module is used to analyze information of a distance from a trigger point generated in the laser scanning sector, to the safety protection device. The scanning area setting module is used to set a profile of an area in the laser scanning area which generates valid feedback signals. The scanning signal analysis module generates landing door control signals after analysis of the trigger point distance information obtained by the trigger distance analysis module.
    The trigger point distance analysis module calculates first, using a delay time converter (TDC, time converter)
    BE2018 / 5434 digital), a time difference between an emission of the laser pulse and a reception of the reflected signals, then, by a computer, calculates in addition a flight distance (TOF, time of flight) of the optical pulse , that is to say information of distance between the trigger point and the sensor, according to said time difference and the speed of light.
    Embodiment 2
    Safety protection device for use in a full height landing door, said safety protection device 2 being installed on a frame 3 of the landing door at a position of the door leaf 1, and being fixed on a leftmost end at the top of the door leaf 1. As shown in FIG. 1, the safety protection device 2 comprises: a laser emitting device, a laser deflecting device, a device for receiving optical signals and a device for analysis and treatment. The analysis and processing device comprises: a laser deflection control module, a trigger distance analysis module, a scanning area adjustment module and a scanning signal analysis module. As shown in FIG. 3, the safety protection device 2 is used as a base point, to form a laser scanning sector 4 which is a sector having the shape of a quarter of a circle, one side being vertical, the other side being horizontal. The scanning area adjustment module includes the following analysis steps:
    51. scanning in a safe environment.
    52. recording of information on the distance from the trigger point, at the time when each of the scan points generates feedback signals.
    BE2018 / 5434
    S3, division of the laser scanning sector into a part close to the sensor and into a part distant from the sensor, based on a delimitation line 5 formed by the distance information - obtained - from the trigger point. The part, in the laser scanning sector, which is near the sensor, is a monitored area 401, and the valid feedback signals are trigger point feedback signals, generated in the monitored area 401. The protection device safety responds to trigger signals generated in the monitored area. The part, in the laser scanning sector, which is distant from the sensor, is a safe area 402, and the safety protection device does not respond to the trigger signals generated in the safe area 402. The rest of the structure is the same as that in embodiment 1. By means of the added scanning area adjustment module, the boundaries can therefore be monitored in real time, depending on the actual installation site of the safety protection device and according to the size door frame, thus preventing false triggering by the existing device, due to a minor error in the installation position or due to an inadequacy of the shape of the door frame, so that the performance of safety and the safety protection device is improved, and a self-adaptation function of the safety protection device is performed.
    Embodiment 3
    Safety protection device for use in a full height landing door, said safety protection device being installed on a frame 3 of the landing door at a position of the door leaf 1, and being fixed near a left end at the top of door leaf 1. As
    BE2018 / 5434 shown in FIG. 1, the safety protection device 2 comprises: a laser transmitter device, a laser deflector device, a device for receiving optical signals and a device for analysis and processing. The analysis and processing device comprises: a laser deflection control module, a trigger distance analysis module, a scanning area adjustment module and a scanning signal analysis module. As shown in Figure 4, the safety protection device 2 is used as a base point, to form a fan-shaped laser scanning sector 4, one side being horizontal, the other side forming an angle with the door frame 3, and an angle at the center of the laser scanning sector 4 is 110 °. The scanning area adjustment module includes the following analysis steps:
    51. scanning in a safe environment.
    The safe environment is one where the landing door is closed and the means of transport has left the platform completely or is about to enter the station.
    52. recording of information on the distance from the trigger point, at the time when each of the scan points generates feedback signals.
    The approach for analyzing the information of distance from the trigger point, in step S2, consists: first, of making a statistic for information of distance from the trigger point, information collected in the safe environment for beams respective laser and as obtained in step S2; then selecting an average value of groups of data points which are most often repeated as a reference point; then, to compare said reference point, to a reference point in a previous safe period, and if the points are distant from each other, replace the reference point in the period
    BE2018 / 5434 safe previous, by said reference point, and if they are close to each other, perform the next step of determination; finally, to determine an error value between said reference point, and the reference point in the previous safe period, and if said error value is within a predefined error range, replace the reference point in the period previous safe, by said reference point, and if said value exceeds the predefined error range, trigger an alarm. By means of said approach, the range of the monitored area of the sensor can be adjusted automatically, so that the monitored area can adapt to changes in the interior contour of the door frame caused by the remains of non-dangerous intruders, for example paper, a plastic bag, a small paper bag, etc., remaining on the surface of the landing door or nesting on the door frame. Therefore, false triggering by the security protection device, caused by restraining safe intruders, can be avoided, and the security performance of the security protection device can be further improved, while ensuring security.
    S3, division of the laser scanning sector into a part close to the sensor and into a part distant from the sensor, by a delimitation line 5 formed by the distance information - obtained - from the trigger point. The part, in the laser scanning sector, which is near the sensor, is the monitored area 401, and the valid feedback signals are trigger point feedback signals, generated in the monitored area 401. The protection device for safety responds to trigger signals generated in the monitored area. The part, in the laser scanning sector, which is distant from the sensor, is the safe zone 402, and the
    BE2018 / 5434 safety protection device does not respond to tripping signals generated in safe area 402. The rest of the structure is the same as that in embodiment 1.
    Embodiment 4
    Safety protection device for use in a full height landing door, said safety protection device being installed on a frame 3 of the landing door at a position of the door leaf 1, and being fixed near a right end at the top of the door leaf 1. As shown in FIG. 1, the safety protection device 2 comprises: a laser emitting device, a laser deflection device, an optical signal receiving device and an analysis device and processing. The analysis and processing device comprises: a laser deflection control module, a trigger distance analysis module, a scanning area adjustment module and a scanning signal analysis module. The scanning area adjustment module includes the following analysis steps:
    IF. scanning in a safe environment.
    The safe environment is one where the landing door is closed and the means of transport has left the platform completely or is about to enter the station. The safety protection device of the present invention can make a determination regarding the safe environment, based on a factory setting or based on information provided by other dock systems.
    Here, the configuration made in the factory can include a configuration of the arrival time of trains, the departure time of trains and the stop time of trains, according to the train timetable displayed on the platform of the installation.
    BE2018 / 5434
    Information provided by other platform systems generally includes: information indicating whether the landing door is closed and information indicating whether the train has left the platform or is about to enter the station. Based on the information obtained, it is determined whether the current period of time is a safe environment. For example, the period of time, which goes from the moment when the last train has completely left the platform, until the next train arrives and stops, and when the platform begins to command the opening of the landing door , is a safe environment; the period of time, which goes from the moment the train arrives at the station and the landing door opens, until the landing door will be closed, is a non-response time period; the period of time, which goes from the moment the instruction to close the landing door is received, until the train has completely left the platform, is a monitored period of time.
    S2. recording of distance information from the trigger point, at the time when each of the scanning points generates feedback signals. The rest of the structure is the same as that in embodiment 1.
    Embodiment 5
    Safety protection device for use in a full height landing door according to one of embodiments 2-4, where the scanning signal analysis module does not analyze the feedback information of the trigger point , obtained by scanning in the safe environment.
    Embodiment 6
    Safety protection device for use in a full height landing door, said safety protection device 2 being installed on a frame 3 of the landing door at
    BE2018 / 5434 level of a position of the door leaf 1, and being straight at the top of the leaf of FIG. 1, the device device one comprises a laser deflector, one fixed near a door end 1. As shown on protection of security laser transmitter, a device receiving optical signals device and an analysis and processing. The analysis and processing device comprises: a deviation control module, trigger distance analysis module, scanning zone adjustment module and a scanning signal module.
    The scanning signal analysis module generates a landing door command after laser analysis, a module for analyzing the landing signals
    The information obtained by triggering.
    from the
    Distance from point trigger analysis module, distance from scanning signal analysis module to includes the following analysis steps: determine if a trigger is
    Step 1 trigger valid according to the trigger point distance information, step 2, and respond to said audit
    Step 2 trigger form a trigger determine if a structure is due and if it is yes, pass if it is an invalid trigger, no trigger signal.
    of valid point trigger information, based on graphical information consisting of a trigger point area, and said body graph information is yes, generating a signal to pass to step 3.
    Step 3: determine if a graphic area conforms to predefined human, and if command, if not, of the graphic information obtained in step 2 exceeds one and if it is yes, generate a signal of c ' is no, generate no predefined threshold signal, command, and if command and
    BE2018 / 5434 complete the analysis. The rest of the structure is the same as that in embodiment 1.
    By means of said analysis configuration, it can be effectively distinguished whether a selected intruder is a human-shaped intruder or a large intruder. Here, the graphic information conforming to the predefined human body graphic structure means that it is quite likely that a traveler has been trapped in the void space between the landing door and the train, which is a extremely dangerous situation. A large intruder, whose graphic information area is larger than the predefined threshold, could be a traveler or a large baggage such as a suitcase, which is a potential safety hazard for the operation of the train and is also an extremely dangerous situation. Intruders, whose graphic information areas are not larger than the predefined threshold, are usually small bags, plastic bags, paper bags, paper, etc., which is not a large potential safety hazard to train operation, and control signals could not be generated at this time, to avoid an abnormal opening of the landing door or an abrupt abrupt stop of the train upon receipt of control signals , which can cause damage due to a secondary accident.
    Embodiment 7
    Safety protection device for use in a full height landing door according to embodiment 6, where the valid trigger mentioned in step 1 is a trigger signal whose distance from the trigger point is less than the information distance from the trigger point, obtained by the scanning zone adjustment module.
    BE2018 / 5434
    Embodiment 8
    Safety protection device for use in a full height landing door according to embodiment 6 where, when an intruder of human form appears, as shown in FIG. 5, the scanning signal analysis module can form a graphic silhouette image for said human form intruder. The approach for determining whether the graphical information conforms to the predefined graphical human body structure, in step 2, consists of:
    (1) determining if the graphical information has a head-shoulder triangle, and if it is yes, generating the control signal, and if it is not, performing the following analysis step;
    (2) to determine if the graphical information has a graphical structure of a head-body-legs assembly, and if it is yes, generate the control signal, and if it is not, go to step 3 .
    Embodiment 9
    Safety protection device for use in a full height landing door according to embodiment 6 where, when an intruder of human form appears, as shown in FIG. 5, the scanning signal analysis module can form a graphic silhouette image for said human form intruder. The approach to determining if the graphical information conforms to the predefined graphical human body structure, in step 2, is: first, to define more than two base points corresponding to each other, respectively in said graphical information and in said predefined human body graph; then, on the basis of said more than two base points corresponding to each other, in said graphical information and in said predefined human body graph, to supply the graphical information on a scale
    BE2018 / 5434 increased or reduced scale, according to a size which corresponds to the predefined human body graphic; finally, comparing the graphical information on an enlarged or reduced scale, with the predefined human body graph, to obtain a graphical profile error, and at generating the control signal if said error does not exceed a predefined threshold, and if said error exceeds the predefined threshold, go to step 3.
    The basic points in the graphical information and in the predefined human body graph are respectively as follows: the highest point and the lowest point in the graphical information and in the predefined human body graph, or the point leftmost and rightmost point in the graphical information and in the predefined human body graph.
    The approach to compare the graphical information, to the predefined human body graph, to obtain the graphical profile error, consists: first, in configuring more than two reference lines for comparison on the graphical information and on the graph of predefined human body. Then, to use a point on the reference lines as a reference point, to obtain respectively a distance A between said reference point and a point of intersection of the graphical information profile, and a distance B between said reference point and a point of intersection of the predefined human body graphic profile; finally, to make a statistic for absolute values of differences between said distance A and said distance B on each of the reference lines, to obtain the graphical profile error.
    Said analysis configuration can determine relatively precisely whether the graphic information of the intruder conforms to the configuration of human form,
    BE2018 / 5434 thus determining relatively precisely if the intruder is a detained traveler.
    Embodiment 11
    Safety protection device for use in a full height landing door, said safety protection device 2 being installed on a frame 3 of the landing door at a position of the door leaf 1, and being fixed in the middle and at the top of the door leaf 1. As shown in FIG. 1, the safety protection device 2 comprises: a laser transmitter device, a laser deflector device, a device for receiving optical signals and a device for analysis and processing . The analysis and processing device comprises: a laser deflection control module, a trigger distance analysis module, a scanning area adjustment module, a scanning signal analysis module and a scanning module. start command. The start control module is used to control whether the safety protection device should send control signals to the landing door.
    The start control module can control the start and stop of the laser emitting device and of the laser deflection control module, so as to control whether the analysis device must generate corresponding control signals. Alternatively, the start-up control module can control the start and stop of the scan signal analysis module, so as to control whether the analysis device must generate corresponding control signals. Alternatively, the start-up control module can also control a connection relationship, by signals, between the scan signal analysis module and a landing door control device, so as to control whether control signals must be sent to the door
    BE2018 / 5434 landing. The rest of the structure is the same as that of embodiment 1.
    By adding the said module, safety protection can be the control device so as not to respond to trigger signals in the safe environment, thus preventing the safety protection device from sending the door opening instruction to the landing door. upon detection of any safe intruder, retained in the safe environment, causing the landing door to open abnormally in the safe environment, which affects safety and is likely to cause accidents.
    Embodiment 12
    Safety protection device for use in a full height landing door according to embodiment 1 where, as shown in FIG. 1, the laser deflector device comprises a first laser deflector and a second laser deflector. The first laser deflector is used to deflect laser signals emitted by the laser emitting device. The second laser deflector is used to divert optical trigger signals to the optical signal receiving device.
    Embodiment 13
    Safety protection device for use in a full height landing door according to embodiment 1, where the laser deflector device comprises a polygonal mirror for deviating laser signals, said polygonal mirror is driven by a drive device, for rotating at a frequency corresponding to the laser emitting device, and one of the surfaces of said polygonal mirror deviates, to form a laser scanning sector.
    BE2018 / 5434
    Embodiment 14
    Safety protection device for use in a full height landing door according to embodiment 13, where normal lines of the polygon mirror surfaces are on different planes and there is a mirror angle between adjacent mirror surfaces, making the laser scanning sectors have angles between them.
    In addition to the above embodiments, the present invention also includes incorporations or combinations of the following technical parameters:
    According to one embodiment of the invention, the device two scanning sectors producing the present laser deflector can deflect adjacent laser 4, to form sectors having an angle between them.
    according to a way of realisation of the present invention, the device deflector laser can deflect, for form 10 sectors having a angle between each of them ;. according to a way of realisation of the present invention, the device deflector laser can deflect, for form 6 sectors having an angle Between each of them.according to a way of realisation of the present invention, the device deflector laser can deflect, for form 5 sectors having an angle Between each of them.according to a way of realisation of the present invention, the device deflector laser can deflect, for form 4 sectors having an angle Between each of them.according to a way of realisation of the present invention, the device deflector laser can deflect, for form 3 sectors having an angle Between each of them.according to a way of realisation of the present invention, the device deflector laser can deflect, for form 2 sectors having an angle Between each of them.
    BE2018 / 5434
    According to an embodiment of the present invention, the angle between the mirror surfaces is 0.01 °. At this point, the angle between adjacent laser scanning sectors is 0.01 °.
    According to an embodiment of the present invention, the angle between the mirror surfaces is 10 °. At this point, the angle between adjacent laser scanning sectors is 10 °.
    According to an embodiment of the present invention, the angle between the mirror surfaces is 1 °. At this point, the angle between adjacent laser scanning sectors is 1 °.
    According to an embodiment of the present invention, the angle between the mirror surfaces is 5 °. At this point, the angle between adjacent laser scanning sectors is 5 °.
    according to a fashion of production of the current invention, the angle between surfaces of mirror is 0.05 °. AT this place, the angle between of the sectors of
    adjacent laser scanning is 0.05 °.
    According to an embodiment of the present invention, the laser emitting device can emit two chains of laser signals which do not coincide with each other, and the laser deflector device deflects said two chains of laser signals which do not coincide with one another. 'with each other, to form two laser scanning sectors having an angle between them.
    According to an embodiment of the present invention, the laser emitting device can emit three chains of laser signals which do not coincide with each other, and the laser deflector device deflects said three chains of laser signals which do not coincide with each other, to form three laser scanning sectors having an angle between each of them.
    BE2018 / 5434
    According to an embodiment of the present invention, the laser emitting device can emit four chains of laser signals which do not coincide with each other, and the laser deflector device deviates said four chains of laser signals which do not coincide with each other, to form four laser scanning sectors having an angle between each of them.
    According to an embodiment of the present invention, the laser emitting device can emit five chains of laser signals which do not coincide with each other, and the laser deflector device deflects said five chains of laser signals which do not coincide with each other, to form five laser scanning sectors having an angle between each of them.
    According to an embodiment of the present invention, the laser emitting device can emit six chains of laser signals which do not coincide with each other, and the laser deflector device deflects said six chains of laser signals which do not coincide with each other, to form six laser scanning sectors having an angle between each of them.
    According to an embodiment of the present invention, the laser emitting device can emit ten chains of laser signals which do not coincide with each other, and the laser deflector device deflects said ten chains of laser signals which do not coincide with each other, to form ten laser scanning sectors having an angle between each of them.
    According to an embodiment of the present invention, the angle between the laser scanning sectors 4 having an angle between them is 0.01 °.
    According to an embodiment of the present invention, the angle between the laser scanning sectors 4 having an angle between them is 1 °.
    BE2018 / 5434
    According to an embodiment of the present invention, the angle between the laser scanning sectors 4 having an angle between them is 0.05 °.
    According to an embodiment of the present invention, the angle between the laser scanning sectors 4 having an angle between them is 5 °.
    According to an embodiment of the present invention, the angle between the laser scanning sectors 4 having an angle between them is 10 °.
    according to a way of realization of the present invention, the angle at sector center of scanning laser 4 is 130 °. according to a way of realization of the present invention, the angle at sector center of scanning laser 4 is 120 °. according to a way of realization of the present invention, the angle at sector center of scanning laser 4 is 90 °. according to a way of realization of the present invention, the angle at sector center of scanning laser 4 is 80 °. according to a way of realization of the present invention, one side of scan area laser 4 is arranged for be horizontal, and the other side form a angle with a green side framing ical of door. according to a way of realization of the present invention, one side of scan area laser 4 is arranged for be horizontal, and the other side is arranged
    to be vertical.
    According to an embodiment of the present invention, each of the two sides of the laser scanning sector 4 respectively forms an angle with each of the two vertical sides of the door frame.
    BE2018 / 5434
    According to an embodiment of the present invention, the laser scanning sector is parallel to the leaf of the full-height landing door.
    According to an embodiment of the present invention, the laser scanning sector forms an angle with the leaf of the full-height landing door, along the vertical or horizontal direction.
    According to an embodiment of the present invention, the laser scanning sector forms an angle of 10 ° with the leaf of the full-height landing door, along the vertical or horizontal direction.
    According to an embodiment of the present invention, the laser scanning sector forms an angle of 0.01 ° with the leaf of the full-height landing door, along the vertical or horizontal direction.
    According to an embodiment of the present invention, the laser scanning sector forms an angle of 1 ° with the leaf of the full-height landing door, along the vertical or horizontal direction.
    The present invention has at least one of the following advantages:
    1. The technical solution of the present invention uses the laser deflector device, to continuously deflect, at a certain angle, optical signals emitted by the laser light source, thus forming laser curtains having different densities, as desired, to respond to the needs of different usage environments.
    2. The technical solution of the present invention uses graphical analysis, to determine whether control signals should be generated, thus avoiding the possibility of false triggering, as in the
    BE2018 / 5434 prior art, by non-dangerous intruders such as paper or plastic bags. At the same time, the sensitivity of the sensor for non-human intruders can be adjusted by said solution, as desired, thereby reducing the possibility of false triggering by safe intruders.
    3. The technical solution of the present invention can adjust, by itself, the size of the monitored area, as desired, so as to adapt to full height landing doors having different sizes and profiles, and the relative degree of freedom of the installation position is high, and the possibility of false triggering of the sensor, by the door frame or the floor, can be effectively reduced.
    It should be noted and understood that the detailed descriptions of the present invention, mentioned above, can be modified and improved in various ways, without departing from the spirit and scope of the claims of the present invention. . Consequently, the scope of the technical solution claimed is not limited by any of the specific lessons given here by way of example.
    权利要求:
    Claims (2)
    [1]
    1. Device use in characterized in laser transmitter, safety protection for a full height landing door, what it includes: a device a laser deflector device, analysis receiver and laser transmitter optical signals and processing ; where one of the directional device device to the next directional deflector device sends laser laser deflector signals; the device control forms at least one laser and the laser signal receiving device device reflected laser device deviates the signals at a predefined angle, under analysis and processing, laser scanning sector;
    optical signals receives and transmits said signals from to analysis analysis and processing;
    and treatment includes:
    a trigger distance analysis module, a scanning area adjustment module and a scanning signal analysis module;
    the trigger distance analysis module is used to analyze information of a distance from a trigger point generated in the laser scanning sector, to the safety protection device;
    the scanning area setting module is used to set a profile of an area in the laser scanning area which generates valid feedback signals;
    the scanning signal analysis module generates landing door control signals after analysis of distance point information
    2018/5434
    BE2018 / 5434 trigger, obtained by the trigger distance analysis module.
    2. Safety protection device for use in a full-height landing door according to claim 1, characterized in that the analysis and processing device further comprises: a start-up control module for checking whether the device for safety guard must send control signals to the landing door.
    3. Safety protection device for use in a full height landing door according to claim 1, characterized in that the scanning area adjustment module comprises the following analysis steps:
    51. scanning in a safe environment;
    52. recording of distance information from the trigger point, at the time when each of the scanning points generates feedback signals;
    the valid feedback signals are trigger point feedback signals, the distance from the trigger point is smaller than the trigger point distance information obtained in step S2.
    4. Safety protection device for use in a full height landing door according to claim 3, characterized in that the scanning zone adjustment module also comprises the following analysis step:
    53. division of the laser scanning sector into a part close to the sensor and a part distant from the
    2018/5434
    BE2018 / 5434 sensor, using, as a limit, the distance point trigger information obtained in step S2;
    the part, in the laser scanning sector, which is near the sensor, is a monitored area, and the valid feedback signals are trigger point feedback signals, generated in the monitored area; the safety protection device responds to trigger signals generated in the monitored area;
    the part, in the laser scanning sector, which is distant from the sensor, is a safe area, and the safety protection device does not respond to the trigger signals generated in the safe area.
    5. Safety protection device for use in a full-height landing door according to claim 1, characterized in that the scanning signal analysis module comprises the following analysis steps:
    step 1: determine if a trip is a valid trip based on the distance information from the trip point, and if it is yes, go to step 2, and if it is an invalid trip, do not respond to said signal trigger;
    step 2: on the basis of trigger point information which results in a valid trigger, forming graphical information of a trigger zone consisting of trigger points, and determining whether said graphical information conforms to a structure predefined human body graph, and if it is yes, generate a command signal, if it is not, go to
    Step 1;
    2018/5434
    BE2018 / 5434 step 3: determine if an area of the graphic information obtained in step 2 exceeds a predefined threshold, and if it is yes, generate a command signal, and if it is not, generate no signal and complete the analysis.
    6. Safety protection device for use in a full height landing door according to claim 5, characterized in that an approach for determining whether said graphical information conforms to the predefined graphical structure of the human body, obtained at step 2, consists of:
    (1) determining if the graphical information has a head-shoulder triangle, and if it is yes, generating the control signal, and if it is not, performing the following analysis step;
    [2]
    (2) to determine if the graphical information has a graphical structure of the head-body-legs assembly, and if it is yes, generate the control signal, and if it is not, go to step 3 .
    7. Safety protection device for use in a full-height landing door according to claim 5, characterized in that the approach for determining whether said graphical information conforms to the predefined graphical structure of the human body, obtained at step 2, consists: first, in defining more than two base points corresponding to each other, respectively in said graphical information and in said predefined human body graph; then, based on said more than two base points corresponding to each other in said graphical information and in said human body graph
    2018/5434
    BE2018 / 5434 predefined, to provide the graphic information on an enlarged scale or on a reduced scale, according to a size which corresponds to the predefined human body graphic; finally, to compare the graphical information on an enlarged or reduced scale, with the predefined human body graph, to obtain a
    error of graphic profile, and generate the signal from ordered if said error do not exceed a threshold preset , and if said error exceeds the threshold preset , go to step 3.8. Dispositi f protection of security for a
    use in a full height landing door according to claim 7, characterized in that the basic points in the graphical information and in the predefined human body graph are respectively as follows: the highest point and the lowest point in the graphical information and in the predefined human body graph, or the leftmost point and the rightmost point in the graphical information and in the predefined human body graph.
    9. Safety protection device for use in a full height landing door according to claim 7, characterized in that an approach for comparing the graphical information, with the predefined human body graph, to obtain the profile error graphics consists of: first, setting up more than two reference lines for comparison on the graphic information and on the predefined human body graphic; then to use a point on the reference lines, as a reference point, to respectively obtain a distance A between said reference point and a point
    2018/5434
    BE2018 / 5434 of intersection of the graphic information profile, and a distance B between said reference point and a point of intersection of the predefined human body graphic profile; finally, to make a statistic
    5 for absolute values of differences between said distance A and said distance B, on each of the reference lines, to obtain the graphical profile error.
    10. Safety protection device for use in a full height landing door according to claim 1, characterized in that the laser scanning sector is placed between the leaf of the full height landing door and the means of
    15 transport.
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    JP2020527496A|2020-09-10|
    JP6995119B2|2022-01-14|
    BE1025827A1|2019-07-18|
    KR20200021911A|2020-03-02|
    WO2019000936A1|2019-01-03|
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    法律状态:
    2019-08-21| FG| Patent granted|Effective date: 20190725 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201710506673.8|2017-06-28|
    CN201710506673.8A|CN107355161B|2017-06-28|2017-06-28|Safety guard for all-high shield door|
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