• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to equipment for measuring and transmitting (10) measured temperature values for a device (12) for controlling a fluid circulating inside a pipe. It comprises, on the one hand, a temperature sensor (30) able to supply, as a function of time, temperature values and a processing module (36), and, on the other hand, a transmitter (26) connected to said temperature sensor (30) for transmitting signals representative of said temperature values, and a receiver (34) for receiving said signals. Said temperature sensor (30) is intended to be mounted in a position close to said pipe. And said processing module (36) is adapted to evaluate a rate of temperature variation, and to develop a signal for transforming said solid phase fluid, when said rate of temperature change decreases in a given time interval.
    公开号:FR3016035A1
    申请号:FR1363580
    申请日:2013-12-26
    公开日:2015-07-03
    发明作者:Jean Rene Herbron
    申请人:GRDF SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to equipment for reading and transmitting measured temperature values for a device for controlling a fluid circulating inside a pipe. A field of application envisaged is particularly but not exclusively that of fluid counting devices and in particular water. Equipment for reading and transmitting measured values of physical quantities, and in particular temperature and flow, are well known for remote reading of fluid meter and in particular of water meter. With regard to the cold water counting devices, they are obviously sensitive to the surrounding temperature, since the water solidifies at atmospheric pressure when the temperature is below 0 ° C and that, moreover, singularly its density decreases. Also, it is necessary to be able to raise, besides the flow, but also the temperature which reigns in the environment of the equipment. To do this, the equipment comprises a temperature sensor and a transmitter powered by an electric battery, installed on the control device. In addition, it comprises a receiver for collecting the values measured by the temperature sensor in particular. Usually, the transmitter is a radiofrequency transmitter. The receiver can collect the measured values of a plurality of transmitters to focus them and then retransmit them to a network for processing. In particular, reference may be made to document FR 2 929 752, which describes such equipment. The temperature sensor, the battery and the transmitter are part of the same set controlled by a microprocessor. However, the temperature sensors usually used to detect the temperature are relatively inexpensive and their accuracy is quite relative, so that the detection of the water gel is imprecise. More accurate sensors can be implemented, however, they are more expensive.
    [0002] In addition, the temperature sensors evolve over time so that a dispersion of measurements over time is observed. Also, a problem that arises and that aims to solve the present invention is to provide equipment for reading and transmission of measured temperature values, which allows to be able to measure more precisely the temperature value corresponding to the solidification of the fluid flowing to the inside of the pipe at an advantageous cost. In addition, another problem is to be able to accurately measure this temperature value despite the evolution of the sensors.
    [0003] In order to solve these problems, the present invention proposes an equipment for reading and transmitting measured temperature values for a device for controlling a fluid circulating inside a pipe, said equipment comprising, of a a temperature sensor capable of supplying, as a function of time, temperature values and a processing module of said temperature values, and, secondly, an emitter connected to said temperature sensor in order to be able to emit, signals representative of said temperature values. , and a receiver for receiving said signals. Said temperature sensor is intended to be mounted in a position close to said pipe; and said processing module is adapted to evaluate a rate of temperature variation, and to develop a signal for transforming said solid-phase fluid, when said rate of temperature variation decreases in a given time interval. Thus, a feature of the invention lies in the temporal monitoring of the temperature near the pipe where the fluid is circulating and in the evaluation of a temperature variation speed in order to precisely determine the phase change temperature of the liquid. flowing. Indeed, during the phase change of a body, for example when a liquid becomes solid, its temperature remains constant. Also, when the surrounding temperature decreases, with a substantially constant average speed, at the passage of the phase change of the body, from the liquid state to the solid state, its temperature remains constant until the total solidification of said body. Therefore, at the beginning of this phase change, the rate of decrease of body temperature is reflected and decreases. The recording at regular time intervals of the temperature, during this phase change, starting from the liquid state to go to the solid state, makes it possible to calculate this speed. It will be observed that the temperature sensor must be sufficiently close to the fluid concerned to be significantly impacted by the temperature of said fluid. In this way, irrespective of the accuracy of the sensor, a fluid freeze warning signal is developed which effectively corresponds to its solidification, and not only to the reading of the value measured by the temperature sensor, which can , be imprecise and vary in time. In addition, the temperature sensor used can then be of modest quality and therefore less expensive. It will be observed that this type of equipment may be suitable for a device for controlling a fluid such as a fluid meter and in particular water, a valve actuator or any sensor associated with the circulation of a fluid.
    [0004] According to a particularly advantageous embodiment of the invention, the equipment further comprises another temperature sensor, intended to be mounted in a position spaced from said pipe to be able to provide other temperature values. And said processing module is able to evaluate another rate of temperature variation, and to develop said alert signal, when, in addition, said other rate of temperature variation remains substantially constant in said given time interval. Also, the second temperature sensor is then a reference because it is subject to the only temperature of the surrounding environment and the change in temperature of the fluid during the phase change has no impact on him. Therefore, the signal is developed when the rate of change of one of the sensors decreases significantly compared to the other rate of change of said other sensor. This eliminates the development of an inadvertent warning signal, as will be explained in more detail later in the description, when the only temperature of the medium decreases to the solidification temperature and then increases . In addition, according to a particularly advantageous embodiment, said warning signal is developed when, in addition, said rate of temperature variation increases in another given time interval succeeding a given time interval. In this way, it is ensured that the profile of the rate of change of temperature at the passage of the phase change temperature corresponds to solidification. Indeed, after the fluid has solidified, the rate of change of its temperature increases again substantially parallel to the rate of change of the temperature of the surrounding medium. According to a feature of the preferred invention, said processing module is mounted on said receiver. Since the receiver can receive signals representative of the measured values of a plurality of emitters, the processing module is then shared and is capable of analyzing the measured temperature values of a plurality of fluid control devices. In addition, the updates of the program of treatment and analysis of measured values are easier to achieve at the receiver. The equipment according to the invention comprises an electric battery for powering said transmitter and said temperature sensor. Its lifetime is for example expected to be between 10 and 20 years. Also, the transmitter and the temperature sensor are adapted to a mode of operation to save the resources of the battery. In addition, the equipment furthermore comprises, preferably, a counting sensor connected to said emitter, for supplying said receiver with values of volume of fluid flowing inside said duct. Moreover, said signals representative of said temperature values are emitted, according to a preferred characteristic, when the temperature value supplied by said temperature sensor is lower than a temperature threshold higher than the solidification temperature of the water at atmospheric pressure. . Thus, depending on the accuracy of the temperature sensors, a temperature threshold is determined above which the probability with which the fluid can solidify is zero. In this way, the transmission of the signals corresponding to the temperature values are only issued when necessary. As a result, the resources of the battery are saved. Further, said temperature values are advantageously provided, in said given time interval, at a frequency of between 10-2 and 10-1 Hz. For example, the temperature values are provided every 60 seconds, which allows to evaluate a significant rate of temperature variation as a function of the temperature variation rate of the environment of the control device.
    [0005] According to another object, the present invention relates to a device for controlling a fluid circulating inside a pipe, said device comprising, on the one hand, a body capable of being traversed by said fluid and a totalizer overcoming said body. and on the other hand, equipment according to the above characteristics, said temperature sensor being installed on said body. In this way, the temperature sensor is located closer to the fluid and therefore undergoes precisely its temperature changes. In addition, said other sensor is installed on said totalizer. And, preferably, opposite a said temperature sensor, so as not to undergo changes in fluid temperature, and to undergo only changes in temperature of the environment of the device. Other features and advantages of the invention will appear on reading the following description of particular embodiments of the invention, given by way of indication but not limitation, with reference to the accompanying drawings, in which: FIG. 1 is a schematic view of the survey and transmission equipment according to the invention; FIG. 2 is a block diagram of an element of the equipment illustrated in FIG. 1; and FIG. 3 is a graph illustrating the operating principle of the equipment illustrated in FIG. 1. FIG. 1 shows equipment for reading and transmitting measured values of temperature, but also of flow, and this for a water meter 12. The surveying and transmission equipment 10 then aims not only to periodically record the amount of water consumed, but also, to detect the occurrence of freezing water at 0 ° C in the counter 12. The water meter 12 is installed between a water inlet of a water distribution conduit 14 and an inlet 16 of a private water circuit, for example an individual dwelling. It has a body 18 including a turbine or a volumetric measurement means 19 and through which the water circulates, and a totalizer 20 including a transducer, not shown, for converting the movements of the turbine 19 into an electrical consumption signal. More specifically, the transducer makes it possible to transform the mechanical movement of the turbine 19 into digital information. The totalizer 20 is also equipped with an electronic circuit 22 comprising a first microprocessor 24 and a radiofrequency transmitter 26 connected to the first microprocessor 24. It is also surmounted by an antenna 25 connected to the transmitter 26. The electronic circuit 22 is powered by an electric battery 28.
    [0006] The equipment 10 is also provided with a first temperature sensor 30 mounted in the body 18 against the water flow path, or hydraulic chamber, which temperature sensor 30 is connected to the first microprocessor 24. It is also equipped , according to another variant embodiment, a second temperature sensor 32 situated at the top of the totalizer 20 and connected like the first one to the microprocessor 24. It will be observed that the temperature sensors 30, 32 are inexpensive sensors made up of for example a platinum resistance sensor, whose accuracy is of the order of +/- 1 ° C. The equipment 10 further comprises a receiver 34 provided with a processing module 36 including a second microprocessor and a memory. It will be observed that the receiver 34 may be associated with a plurality of emitters 26 and consequently with a plurality of water meters 12. In addition, the receiver 34 may itself be connected to a centralizing network by radio link or well wired. Thus, the digital information corresponding to the flow of water through the body 18 is communicated to the transmitter 26 via the microprocessor 24, as are the information provided by the temperature sensors 30, 32. FIG. 2 shows the electronic circuit 22 more clearly. The microprocessor 24 is connected on the one hand to the transmitter 26 and on the other hand to the electric battery 28. The transmitter 26 is connected to the antenna 25, while the microprocessor 24 has a first link 38 to be connected to the first temperature sensor 30 and a second link 40 to be connected to the second temperature sensor 32. The microprocessor 24 is also directly connected to the transducer. Thus, thanks to the microprocessor 24, the measured temperature values by the first temperature sensor 30 are sampled with a period, for example, of the order of a minute, or at a frequency of 1.67 × 10 -2 Hz. Thus, the corresponding temperature values are communicated to the transmitter 26 which transmits signals representative of said values to the receiver 34. The latter, via the processing module 36 is able to store the corresponding temperature values. and to treat them. Moreover, and for the purpose of saving the electric battery 28, and according to a particularly advantageous embodiment of the invention, the microprocessor 24 communicates measured temperature values only when these temperatures are, for example, less than 4 ° C. In this way, taking into account the accuracy of the temperature sensor 30, the measured temperature values will be communicated to the transmitter 26 only when the water solidification temperature is approaching by positive values. This will prevent the transmission of measured temperature values when there is no risk of frost.
    [0007] Thus, since the temperature values measured by the first temperature sensor 30 are less than 4 ° C., according to the above example, the microprocessor 24 communicates to the transmitter 26 all the measured values with a periodicity of 60 seconds per second. For example, the transmitter 26 transmits signals representative of the measured values for transmission to the receiver 34. The processing module 36 then analyzes these temperature values and calculates a rate of temperature variation. Referring to FIG. 3, the analysis of temperature values is described when the temperature experienced by the first temperature sensor decreases below 4 ° C. Assume that the temperature surrounding the water meter 12 decreases uniformly and continuously. In a first step A, the temperature values measured as a function of time and defining the curve 42 decrease continuously and uniformly. As a result, the speed of temperature variations is constant and the slope of the corresponding curve in the Figure is straight and negative. As soon as the water contained or circulating in the body 18 of the water meter 12 approaches its solidification temperature, the rate of temperature variation decreases, because during the transformation of the water, its liquid state towards its solid state, the temperature remains constant. Also, the first temperature sensor 30 located near the hydraulic chamber, undergoes changes in temperature of the water it contains and therefore, the measured temperature values show a decrease in the rate of temperature changes. This decrease in temperature variation rate calculated by the processing module 36 corresponds to a second step B illustrated in FIG. 3. The decrease in the rate of temperature variation corresponding to step B results in a variation of the slope. to the curve up to a landing. Thus, the processing module 36 generates an alert signal, for example when three successive speeds of temperature variation progressively deviate from the constant value corresponding to the decay step A. This warning signal is for example associated with a time information provided by the clock of the second microprocessor, and is transmitted to the central network. In this way, it is understood that a warning signal can be issued reliably, with an inexpensive temperature sensor, by following the speed of variation of the measured temperature values in the vicinity of the temperature of change of state of the water. According to another embodiment, the measured temperature values are used by means of the second temperature sensor 32, which is located at the top of the totalizer 20 of the water meter 12. Also, the second temperature sensor 32 captures the temperature. the temperature surrounding the water meter 12 and is not sensitive to the speed of temperature variation corresponding to the phase change of the water flowing through the water meter 12. In addition, as for the first sensor 30, the microprocessor 24 communicates temperature values measured by the second sensor 32, only when these temperatures are below 4 ° C.
    [0008] It will be assumed that the temperature of the surrounding medium and sensed by the second temperature sensor 32 is substantially less than the temperature value sensed by the first sensor 30 because it is less thermally protected. Also, when the temperature surrounding the water meter 12 decreases uniformly and continuously, the processing module 36 calculates the speed of temperature variation corresponding to the temperature values measured as a function of time by the second temperature sensor 32, and this speed corresponds to the slope of line 44. Also, according to this second embodiment, the processing module compares each temperature value measured at the same instant by the two temperature sensors 32, 30. Thus, as illustrated in FIG. Figure 3, since the difference is constant, it is considered that the water flowing in the body 18 of the water meter 12, is in the liquid phase. On the other hand, since the values measured respectively by the two temperature sensors 32, 30 deviate progressively, it is considered that the water solidifies. Therefore, the processing module 36 develops the alert signal. This second embodiment makes it possible to reveal the cases where the temperature of the water flowing through the body 18 of the water meter 12 comes close to the solidification temperature without reaching it. Indeed, this embodiment makes it possible to detect substantially earlier the occurrence of the gel. The first two modes of implementation make it possible to detect the phase change of the water flowing in the body 18 of the water meter 12, in a given time interval corresponding to a temperature range of substantially between 4 ° C. and 0 ° C. According to a third embodiment, the gel detection can be performed even more reliably, in an interval of, for example, between 4 ° C. and -4 ° C. and according to which the speed is recorded in a third step C. temperature variation of the temperature values measured by the first temperature sensor 30. In fact, in this third step C, the speed of temperature variation, after being substantially canceled around the phase change temperature of the water, will then accelerate when all the water becomes solid.
    [0009] Also, it is also possible to program the processing module 36 so that it develops an alert signal, only on the dual condition that the speed of temperature variation provided by the measured values of the first temperature sensor 30 , has decreased according to step B, during a first time interval and then believed, according to step C in a second time interval, immediately succeeding the first. Further, the evolution of the temperature variation rates provided by the measured values of the first temperature sensor 30, can be compared with the rates of temperature changes provided by the measured values of the second temperature sensor 32 during the two aforementioned intervals, to develop the warning signal. It will of course be understood that the equipment for measuring transmission of measured values of temperature can be adapted to any device for controlling a fluid, and for example a shut-off valve.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Equipment for reading and transmitting (10) measured temperature values for a control device (12) for a fluid circulating inside a pipe, said equipment comprising, on the one hand, a temperature sensor (30) ) able to supply, as a function of time, temperature values and a processing module (36) of said temperature values, and secondly, a transmitter (26) connected to said temperature sensor (30) for transmitting signals representative of said temperature values, and a receiver (34) for receiving said signals, characterized in that said temperature sensor (30) is adapted to be mounted in a position close to said conduit; and in that said processing module (36) is adapted to evaluate a temperature variation rate, and to develop a signal for converting said fluid into a solid phase, when said rate of temperature variation decreases in a range of given time.
    [0002]
    2. Equipment according to claim 1, characterized in that it further comprises another temperature sensor (32), intended to be mounted in a position spaced from said pipe to be able to provide other temperature values, and in that said processing module (36) is able to evaluate another rate of temperature variation, and to elaborate said warning signal, when, in addition, said other rate of temperature variation remains substantially constant in said given time interval .
    [0003]
    3. Equipment according to claim 1 or 2, characterized in that said warning signal is developed when, in addition, said rate of temperature variation increases in another given time interval succeeding a given time interval.
    [0004]
    4. Equipment according to any one of claims 1 to 3, characterized in that said processing module (36) is mounted on said receiver (34).
    [0005]
    5. Equipment according to any one of claims 1 to 4, characterized in that it comprises an electric battery (28) for supplying said transmitter (26) and said temperature sensor (70).
    [0006]
    6. Equipment according to any one of claims 1 to 5, characterized in that it further comprises a counting sensor connected to said transmitter (26), for supplying said receiver (34) volume values of fluid flowing to the interior of said pipe.
    [0007]
    7. Equipment according to any one of claims 1 to 6, characterized in that said signals representative of said temperature values are emitted when the temperature value provided by said temperature sensor (30) is less than a temperature threshold greater than the solidification temperature of the water at atmospheric pressure.
    [0008]
    8. Equipment according to any one of claims 1 to 7, characterized in that said temperature values are provided, in said given time interval, at a frequency between 10-2 and 10-1 Hz.
    [0009]
    9. Device for controlling a fluid (12) circulating inside a pipe, said device comprising, on the one hand, a body (18) able to be traversed by said fluid and a totalizer (20) surmounting said body (18) and secondly, an equipment (10) according to any one of claims 1 to 8, characterized in that said temperature sensor (30) is installed on said body (18).
    [0010]
    10. Device according to claim 2 and 9, characterized in that said other sensor (32) is installed on said totalizer (20).
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    同族专利:
    公开号 | 公开日
    EP3087361B1|2017-10-11|
    FR3016035B1|2016-02-12|
    ES2651497T3|2018-01-26|
    PL3087361T3|2018-04-30|
    CN106461468B|2020-07-17|
    CY1119832T1|2018-06-27|
    KR20160128294A|2016-11-07|
    EP3087361A1|2016-11-02|
    US20160320245A1|2016-11-03|
    WO2015097407A1|2015-07-02|
    US10197449B2|2019-02-05|
    CN106461468A|2017-02-22|
    KR102263543B1|2021-06-11|
    PT3087361T|2017-12-26|
    引用文献:
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    法律状态:
    2015-12-17| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-26| PLFP| Fee payment|Year of fee payment: 4 |
    2017-03-31| TP| Transmission of property|Owner name: SUEZ GROUPE, FR Effective date: 20170301 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 5 |
    2019-12-26| PLFP| Fee payment|Year of fee payment: 7 |
    2020-12-27| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-27| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1363580A|FR3016035B1|2013-12-26|2013-12-26|MEASURING AND TRANSMITTING EQUIPMENT WITH MEASURED TEMPERATURE VALUES|FR1363580A| FR3016035B1|2013-12-26|2013-12-26|MEASURING AND TRANSMITTING EQUIPMENT WITH MEASURED TEMPERATURE VALUES|
    KR1020167018277A| KR102263543B1|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    PT148310170T| PT3087361T|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    PCT/FR2014/053538| WO2015097407A1|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    CN201480070697.8A| CN106461468B|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    US15/108,261| US10197449B2|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    PL14831017T| PL3087361T3|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    EP14831017.0A| EP3087361B1|2013-12-26|2014-12-23|Device for reading and transmitting measured temperature values|
    ES14831017.0T| ES2651497T3|2013-12-26|2014-12-23|Equipment for reading and transmitting measured temperature values|
    CY20171101241T| CY1119832T1|2013-12-26|2017-11-27|EQUIPMENT FOR READING AND TRANSFERING TEMPERATURE MEASURES|
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