CN111199267A - Rail transit vehicle-mounted RFID temperature monitoring system - Google Patents
Rail transit vehicle-mounted RFID temperature monitoring system Download PDFInfo
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Abstract
The invention relates to a vehicle-mounted RFID temperature monitoring system for rail transit, which comprises a leaky cable temperature measuring channel; the leaky cable temperature measuring channel comprises an RFID temperature measuring electronic tag and a temperature measuring leaky cable; the RFID temperature measurement electronic tags are arranged along the wiring direction of the temperature measurement leaky cable; the reader-writer transmits an electromagnetic radiation signal to charge the RFID temperature measurement electronic tag through the temperature measurement leaky cable; and the RFID temperature measurement electronic tag finishes temperature sensing acquisition after obtaining electric energy and transmits the electric energy to the reader-writer through temperature measurement leaky cable coupling. The leaky cable temperature measuring channel is suitable for measuring the surface temperature of the long linear object. The device also can comprise a panel antenna temperature measuring channel; the panel antenna temperature measurement channel comprises an RFID temperature measurement electronic tag and a panel antenna; the RFID temperature measurement electronic tag is arranged on the cable to be measured, and the panel antenna is arranged near the RFID temperature measurement electronic tag; the reader-writer transmits electromagnetic wave signals through the panel antenna to charge the RFID temperature measurement electronic tag, and the panel antenna acquires temperature measurement sensing signals of the RFID temperature measurement electronic tag. The plate antenna temperature measuring channel is suitable for measuring the temperature of a single-point or planar object.
Description
Technical Field
The invention relates to a vehicle-mounted RFID temperature monitoring system for rail transit.
Background
The traditional rail transit cable trough temperature test mainly adopts a special temperature sensing cable scheme. In the special temperature sensing cable scheme, the temperature sensing cable and ordinary surveyed cable tie in an organic whole, when certain reason leads to ordinary cable temperature to rise, the temperature sensing cable is also heated the temperature simultaneously and rises, based on the intrinsic characteristic of temperature sensing cable itself, the inside heating point of temperature sensing cable can the fusing take place the short circuit, and the host computer can convert corresponding short circuit emergence distance through specific algorithm to indirectly calculate the excess temperature emergence position and according to this and high temperature alarm. The temperature sensing cable temperature measuring scheme has the main problems that the temperature sensing cable can only be fused once to give an alarm when a high-temperature event occurs, the temperature sensing cable cannot recover automatically after being fused, the temperature warning threshold value of the temperature sensing cable is fixed, the trend that the temperature of a cable groove gradually rises and changes cannot be predicted in advance, high-temperature early warning capability is not provided, and the temperature sensing cable can only give an alarm after the high-temperature event occurs, so that the defect of low high-temperature risk prevention capability exists.
In addition, due to the characteristics of the bending radius, the texture, the material and the like of the temperature sensing cable, the temperature sensing cable cannot be applied to multipoint high-density temperature measurement in a small area, for example, when the temperature of a low-voltage box entering and exiting a high-power cable is monitored, the temperature sensing cable cannot be tightly attached to the tested cable and accurate temperature measurement cannot be guaranteed by adopting the temperature sensing cable scheme.
Disclosure of Invention
The invention provides a vehicle-mounted RFID temperature monitoring system for rail transit.
In order to solve the technical problem, the invention provides a rail transit vehicle-mounted RFID temperature monitoring system which comprises a reader-writer, an upper computer and a leaky cable temperature measuring channel; the leaky cable temperature measuring channel comprises an RFID temperature measuring electronic tag and a temperature measuring leaky cable; the RFID temperature measurement electronic tag is arranged along the wiring direction of the temperature measurement leaky cable and is positioned at or near the leakage hole of the temperature measurement leaky cable; one end of the temperature measuring leaky cable is connected with the reader-writer through a radio frequency cable inside the temperature measuring leaky cable; the reader-writer transmits an electromagnetic radiation signal through the temperature measuring leaky cable, and the electromagnetic radiation signal is radiated to the RFID temperature measuring electronic tag through the leaky cable leakage hole so as to charge the RFID temperature measuring electronic tag and provide working electric energy; the RFID temperature measurement electronic tag finishes temperature sensing acquisition after obtaining electric energy, and transmits temperature sensing information to the reader-writer through temperature measurement leaky cable coupling; the reader-writer reads temperature information according to the temperature sensing information and transmits the temperature information to the upper computer; and the upper computer displays the temperature and monitors and alarms after acquiring the temperature information. The leaky cable temperature measuring channel is suitable for measuring the temperature of the surface of a long linear object.
As an implementation mode, the temperature measurement leaky cable is a coupling type leaky radio frequency coaxial cable or a radiation type leaky radio frequency coaxial cable; the temperature measurement leaky cable is a continuous open hole type leaky radio frequency coaxial cable or a spaced hole type leaky radio frequency coaxial cable.
In one embodiment, the RFID temperature measurement electronic tag is disposed at a leakage hole of the temperature measurement leaky cable, and the temperature measurement leaky cable and the measured cable are bundled into a whole and then installed in the cable trough.
As an implementation mode, the track traffic vehicle-mounted RFID temperature monitoring system further comprises a panel antenna temperature measuring channel; the panel antenna temperature measurement channel comprises an RFID temperature measurement electronic tag and a panel antenna; the RFID temperature measurement electronic tag is arranged on the cable to be measured, and a panel antenna is arranged near the RFID temperature measurement electronic tag; the reader-writer transmits electromagnetic wave signals through a panel antenna to charge the RFID temperature measurement electronic tag so as to provide working electric energy; the panel antenna and the RFID temperature measurement electronic tag are communicated through wireless electromagnetic wave signals, and temperature measurement sensing signals of the RFID temperature measurement electronic tag are obtained; the reader-writer reads temperature information according to the temperature sensing information and transmits the temperature information to the upper computer; and the upper computer displays the temperature and monitors and alarms after acquiring the temperature information. The embodiment can be suitable for measuring the surface temperature measurement of the planar object with single point position or densely distributed temperature measurement point positions by the flat antenna temperature measurement channel while measuring the surface temperature measurement of the long linear object by the leaky cable temperature measurement channel.
As an embodiment, the leaky cable temperature measuring channel is arranged in the cable groove and used for measuring the temperature of the cable to be measured; and the RFID temperature measurement electronic tag in the panel antenna temperature measurement channel is arranged on the low-voltage box cable and is used for measuring the temperature of the cable to be measured.
As an implementation mode, the leaky cable temperature measuring channel and the panel antenna temperature measuring channel share a reader-writer and an upper computer; the reader-writer and the panel antenna are communicated through a coaxial line.
In one embodiment, the reader-writer and the upper computer communicate with each other in a wired or wireless manner.
As an implementation mode, a multi-level alarm temperature threshold value is set in an upper computer application program, and alarm signals of different levels are issued according to different temperature levels.
As an implementation mode, a reader-writer is arranged in the same carriage, and an upper computer is arranged in a cab; the temperature information read by the reader-writer of each carriage is uniformly collected on the upper computer.
As an implementation mode, the upper computer is used for controlling the temperature reading operation of the reader-writer, storing temperature information and forwarding the temperature information to the vehicle control management system TCMS for the centralized display of the temperature and the alarm of the vehicle information system.
Compared with the prior art, the invention has the obvious advantages that,
(1) the invention is not only suitable for surface temperature measurement of long linear objects, but also suitable for surface temperature measurement of planar objects with single point positions or densely distributed temperature measurement point positions, has wider application objects and stronger operation flexibility, and can simultaneously meet the real-time temperature monitoring requirements of different devices and cables of vehicles;
(2) the RFID temperature measurement electronic tag is matched with the panel antenna or the temperature measurement leaky cable, and the panel antenna or the temperature measurement leaky cable provides a working power supply for the RFID temperature measurement electronic tag, so that real-time temperature monitoring is realized, the monitoring efficiency and the automation degree are improved, and the safety is improved on the whole;
(3) the temperature measurement electronic tag is only responsible for temperature acquisition and temperature information transmission, the upper computer can flexibly apply and process various information after collecting the temperature information, the temperature measurement electronic tag has the characteristic of separating temperature acquisition and temperature information processing, and an information generation source can be provided for large data processing of temperature information in the future;
(4) after the high-temperature event is relieved, monitoring equipment such as a temperature measuring electronic tag and the like can be repeatedly used for many times, and compared with the temperature sensing cable which can only be used at one time for overtemperature, the temperature sensing cable has the obvious cost advantage.
Drawings
FIG. 1 is a schematic block diagram of a multi-functional temperature monitoring system according to an embodiment of the present application.
FIG. 2 is a schematic view of a temperature measuring leaky cable according to an embodiment of the application.
FIG. 3 is a schematic diagram of cable trough temperature measurement according to an embodiment of the present application.
FIG. 4 is a schematic diagram of low-voltage box inlet and outlet cable temperature measurement according to an embodiment of the application.
Detailed Description
It is easily understood that various embodiments of the present invention can be conceived by those skilled in the art according to the technical solution of the present invention without changing the essential spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
The technical scheme of the embodiment of the application integrates a radio frequency identification sensing technology and a leaky cable communication technology. The radio frequency identification sensor, namely the RFID temperature measurement electronic tag has the advantages of wireless and battery-free power supply, the radio frequency leaky coaxial cable (leaky cable for short) has the capability of radiating an electromagnetic field along the line, and the flat antenna has the capability of radiating the electromagnetic field on a directional plane.
It should be understood that the technical solution of the embodiment of the present application can be applied to various rail transit vehicles, such as urban light rails, subway vehicles, high-speed rails, ordinary passenger and freight train vehicles, and the like. The working frequency of the RFID temperature measurement electronic tag is an ultrahigh frequency UHF frequency band radio frequency signal, the working frequency ranges from 840MHz to 960MHz, and the typical frequency range is from 902MHz to 928 MHz. The reader-writer can output single-channel radio frequency signals or multi-channel radio frequency signals.
FIG. 1 shows a schematic block diagram of a temperature monitoring system according to an embodiment of the present application. As shown in fig. 1, the multifunctional temperature monitoring system includes a reader-writer, an upper computer, a leaky cable temperature measuring channel and a flat antenna temperature measuring channel.
The leaky cable temperature measuring channel is used for measuring the temperature of long strip-shaped objects such as cable troughs and comprises an RFID temperature measuring electronic tag 1 and a temperature measuring leaky cable 8. The reader-writer transmits an ultrahigh frequency UHF wave band wireless signal through the temperature measuring leaky cable 8, the ultrahigh frequency UHF wave band wireless signal is radiated to the RFID temperature measuring electronic tag 1 through the leaky cable leakage hole 10 to charge the RFID temperature measuring electronic tag 1, the RFID temperature measuring electronic tag 1 finishes temperature sensing and acquisition after obtaining electric energy, and temperature information is transmitted to the reader-writer through leaky cable coupling, so that the detection and the transmission of the temperature information are finished.
The panel antenna temperature measuring channel is used for measuring the temperature of punctiform or planar objects such as cables entering and exiting from the low-voltage box and comprises an RFID temperature measuring electronic tag 1 and a panel antenna 3. The reader-writer emits UHF band wireless signals through the panel antenna 3, the RFID temperature measurement electronic tag 1 is irradiated, and therefore the RFID temperature measurement electronic tag 1 is charged, and temperature sensing collection is completed after the RFID temperature measurement electronic tag 1 obtains electric energy. The panel antenna 3 acquires a temperature measurement sensing signal of the RFID temperature measurement electronic tag 1. Through electromagnetic wave radiation between the RFID temperature measurement electronic tag 6 and the panel antenna 10, not only is charging of working voltage realized, but also temperature sensing and temperature measurement signal wireless transmission are realized.
Each carriage can be provided with a reader-writer, and one reader-writer can be connected with one or more leaky cable temperature measuring channels or flat antenna temperature measuring channels, so that simultaneous temperature measurement of the cable trough and the low-voltage box is realized. And the reader-writers in all the carriages upload the received temperature information to an upper computer, and the reader-writers in all the carriages are in networking communication with the upper computer positioned in a locomotive control room in a wired or wireless mode. And wired networking communication modes such as RS485 or Ethernet. The wireless networking communication mode is, for example, Lora, GPRS, 4G, 5G, and the like. All temperature measurement information of the whole train is collected in the upper computer for storage and display output, and the upper computer gives an alarm in time when the temperature exceeds a set threshold value.
FIG. 2 shows a schematic view of a temperature measuring leaky cable according to an embodiment of the application. As shown in FIG. 2, in order to measure the temperature of a long linear object such as a cable in a cable slot, in the present embodiment, the RFID temperature measurement electronic tag 1 is arranged along the wiring direction of the temperature measurement leaky cable 8 and is located at or near the leakage opening 10 of the temperature measurement leaky cable 8. One end of the temperature measuring leakage cable 8 is connected with the reader-writer through a radio frequency cable in the temperature measuring leakage cable, and the other end of the temperature measuring leakage cable is connected with a 50 ohm load for preventing signal return loss through radio frequency signal impedance matching. And then the temperature measurement leakage cable 8 with the temperature measurement electronic tag is tightly attached to the measured object, so that the position where the temperature measurement leakage cable 8 arrives can be sensed and measured in real time through the attached temperature measurement electronic tag.
The method that the RFID temperature measurement electronic tag 1 is arranged at or near the leakage hole of the temperature measurement leakage cable 8 can adopt the installation of a binding belt, a heat shrink tube, rubber or a plastic sleeve and the like.
The temperature measurement leaky cable 8 can adopt a coupling type leaky radio frequency coaxial cable and also can adopt a radiation type leaky radio frequency coaxial cable; the temperature measurement leaky cable 8 can adopt a continuous open pore type leaky radio frequency coaxial cable or a spaced pore type leaky radio frequency coaxial cable.
As shown in fig. 3, the temperature measuring leaky cable 8 may be arranged at the center of the plurality of ordinary cables 11 to be measured, or may be attached and bound to one side of a cable bundle composed of the plurality of ordinary cables. It should be understood that the temperature measuring leaky cable 8 can be bundled with one tested common cable 11 alone or with a plurality of tested common cables 11, and the selection depends on the difference of the monitored objects.
As shown in fig. 1 and 3, when the temperature measuring leaky cable 8 is used for measuring the temperature of a long linear object, such as other common cables 11 in the cable trough 6, the RFID temperature measuring electronic tag 1 is installed and fixed on one side of the leakage opening 10 of the temperature measuring leaky cable 8, and the number of the RFID temperature measuring electronic tag 1 can be flexibly increased or decreased according to the requirements of customers. One end of the two end heads of the temperature measuring leakage cable 8 is connected with a reader-writer of a lower computer, and the other end is connected with a load resistor 7 for 50 ohm impedance matching. After the temperature measuring leaky cable 8 is manufactured, the temperature measuring leaky cable and a measured common cable 11 are bundled into a whole and then are installed in a vehicle cable groove 6, and the cable groove 6 is installed on a vehicle chassis frame. The radio frequency cable inside the temperature measurement leaky cable 8 is connected with the reader-writer. Meanwhile, the number, the length and the installation position of the temperature measurement leakage cables 8 can be properly adjusted according to the length of the vehicle cable trough 6, the number of cables in the cable trough and the installation position, and the installation position between the RFID temperature measurement electronic tag 1 and the temperature measurement leakage cables 8 can also be adjusted.
For point-shaped or planar arrangement objects, the RFID temperature measurement electronic tag is arranged on a measured cable, and then the circularly polarized or linearly polarized panel antenna 3 is arranged just right opposite to the RFID temperature measurement electronic tag 1 nearby. As shown in fig. 4, when a flat antenna temperature measuring channel is used for measuring the temperature of a punctiform or planar object such as a low-voltage box cable, an RFID temperature measuring electronic tag 1 is bound on a measured cable 2, a circularly polarized flat antenna 3 is arranged at a position right opposite to the RFID temperature measuring electronic tag 1 nearby, the position of the flat antenna 3 is as close to the RFID temperature measuring electronic tag 1 as possible, and all the RFID temperature measuring electronic tags 1 are positioned in a half-power angle radiation range 4 of the flat antenna 3, so that the optimal temperature measuring effect is obtained, and the identification and temperature monitoring of the punctiform or planar object are realized. The panel antenna 3 is connected to the reader/writer via a coaxial cable 5 for communication.
In the application, when the panel antenna temperature measuring channel is used for measuring the temperature of a punctiform or planar object such as a low-voltage box cable, the size and the shape of the panel antenna 3 can be adjusted according to the quantity and the distribution condition of the RFID temperature measuring electronic tags 1 opposite to the panel antenna 3. For example, a square or rectangular panel antenna 3 can be used according to the number and distribution of the RFID thermometric electronic tags 1.
The technical scheme can be flexibly applied and satisfactorily achieves the temperature monitoring purpose no matter in the cable slot temperature measurement occasions with an overlong measured object and scattered measured point positions or in the cable temperature measurement occasions with concentrated measured point positions and intensive temperature measurement points. In addition, compared with the temperature measurement of the temperature sensing cable in the conventional scheme in the market, the temperature measurement device not only has the basic high-temperature alarm function, but also has the purposes of carrying out temperature measurement monitoring in real time and realizing continuous monitoring through an upper computer.
It should be understood that the leaky cable temperature measuring channel or the flat antenna temperature measuring channel can independently form a temperature monitoring system with the reader-writer and the upper computer. For example, in one embodiment, the RFID temperature monitoring system only comprises a reader-writer, an upper computer and a leaky cable temperature measuring channel, and is used for measuring the temperature of the long strip-shaped object in the carriage. In another embodiment, the RFID temperature monitoring system only includes a reader/writer, an upper computer, and a flat antenna temperature measurement channel, and is used for measuring the temperature of a point-like or planar object such as a cable entering and exiting from the low-voltage box. In other words, the leaky cable temperature measuring channel and the flat antenna temperature measuring channel do not necessarily exist in one RFID temperature monitoring system at the same time.
It should be understood that no matter which embodiment is adopted, it is necessary to ensure that the RFID temperature measurement electronic tag 1 can obtain enough electromagnetic field energy, so that it is necessary to ensure that the reader/writer has enough transmission power, that the distance between the patch antenna and the temperature measurement electronic tag cannot be too long, and that the RFID temperature measurement electronic tag 1 is electromagnetically charged enough to reliably sense and communicate. In addition, considering the influence of various metal shielding boxes and metal cables inside the cable groove 6 on the electromagnetic environment around the RFID temperature measurement electronic tag 1 and the influence of the surrounding metal materials after the low-voltage box RFID temperature measurement electronic tag 1 is installed on the electromagnetic environment, the simulation of the electromagnetic field around the two different application environments of the RFID temperature measurement electronic tag 1 is needed before the RFID temperature measurement electronic tag 1 is installed, so as to obtain the optimal temperature sensing performance of the electronic tag.
As a preferred implementation mode, the reader-writer is configured on each carriage and used for collecting and forwarding temperature information, the reader-writer is networked in a wired or wireless mode and is uploaded to the upper computer, and the upper computer is used for forwarding the temperature information to the vehicle control management system TCMS for centralized information processing and display while finishing temperature reading operation control of the reader-writer and temperature information storage. In order to ensure temperature monitoring and data safety and reliability, the upper computer in the application adopts master-slave dual-computer hot backup, when the main computer of the upper computer fails, the other auxiliary computer of the upper computer immediately takes over the work, and the temperature monitoring work is ensured to be uninterrupted. The upper computer can be an industrial personal computer or a human-machine interface HMI device.
As a preferred embodiment, the internal program of the upper computer can set multiple levels of temperature thresholds, for example, two levels of thresholds of 60 degrees celsius early warning and 80 degrees celsius warning are set, and the upper computer sends out different warning levels according to different temperatures, so that the defect that only one temperature measurement threshold can be fixed at one time in the conventional scheme such as a temperature sensing cable is avoided, and the dual purposes of early warning for temperature rise and re-warning for high temperature are achieved. The internal program of the upper computer can also set a three-level temperature threshold, such as a 60 ℃ high temperature preliminary early warning, a 70 ℃ high temperature moderate early warning, an 80 ℃ high temperature serious warning and the like. When the temperature measurement value reaches 60 ℃, the upper computer sends out a high-temperature preliminary early warning; when the temperature measurement value reaches 70 ℃, the upper computer sends out a high-temperature moderate early warning; when the temperature measurement value reaches 80 ℃, the upper computer sends out a high-temperature serious alarm. Therefore, enough prejudgment time can be provided for vehicle operators, possible risks can be handled in advance, and possible fire faults caused by untimely temperature monitoring can be prevented.
The multi-temperature threshold setting function can realize the early warning of multiple levels of different temperature thresholds, in addition, the temperature of the monitored object can be displayed in real time and recorded historically, and the temperature historical data can be used for big data analysis and judging the temperature change trend, so that the change rule of the service life of the cable or equipment related to the temperature can be summarized and analyzed, and the whole-cycle and whole-life management of the cable or the equipment is facilitated.
Claims (10)
1. A rail transit vehicle-mounted RFID temperature monitoring system is characterized by comprising a reader-writer, an upper computer and a leaky cable temperature measuring channel;
the leaky cable temperature measuring channel comprises an RFID temperature measuring electronic tag (1) and a temperature measuring leaky cable (8); the RFID temperature measurement electronic tag (1) is arranged along the wiring direction of the temperature measurement leaky cable (8) and is positioned at the position (10) of the leakage hole of the temperature measurement leaky cable (8) or near the hole; one end of the temperature measuring leaky cable (8) is connected with the reader-writer through a radio frequency cable inside the temperature measuring leaky cable;
the reader-writer transmits electromagnetic radiation signals through the temperature measurement leaky cable (8), and the electromagnetic radiation signals are radiated to the RFID temperature measurement electronic tag (1) through the leaky cable leakage hole (10) so as to charge the RFID temperature measurement electronic tag (1) and provide working electric energy;
the RFID temperature measurement electronic tag (1) finishes temperature sensing acquisition after obtaining electric energy, and transmits temperature sensing information to the reader-writer through temperature measurement leaky cable (8) in a coupling manner;
the reader-writer reads temperature information according to the temperature sensing information and transmits the temperature information to the upper computer;
and the upper computer displays the temperature and monitors and alarms after acquiring the temperature information.
2. The rail transit vehicle-mounted RFID temperature monitoring system of claim 1,
the temperature measurement leaky cable (8) is a coupling type leaky radio frequency coaxial cable or a radiation type leaky radio frequency coaxial cable;
the temperature measurement leaky cable (8) is a continuous open hole type leaky radio frequency coaxial cable or a spaced hole type leaky radio frequency coaxial cable.
3. The vehicle-mounted RFID temperature monitoring system for rail transit according to claim 1, wherein the RFID temperature measuring electronic tag (1) is arranged at a leakage opening (10) of the temperature measuring leaky cable (8), and the temperature measuring leaky cable (8) and the measured cable (11) are bundled into a whole and then are installed in the cable trough (6).
4. The rail transit vehicle-mounted RFID temperature monitoring system according to any one of claims 1-3, further comprising a panel antenna temperature measuring channel; the panel antenna temperature measurement channel comprises an RFID temperature measurement electronic tag (1) and a panel antenna (3);
the RFID temperature measurement electronic tag (1) is arranged on a cable to be measured, and a panel antenna (3) is arranged near the RFID temperature measurement electronic tag (1);
the reader-writer transmits electromagnetic wave signals through a panel antenna (3) to charge the RFID temperature measurement electronic tag (1) so as to provide working electric energy; the panel antenna (3) is communicated with the RFID temperature measurement electronic tag (1) through wireless electromagnetic wave signals, and temperature measurement sensing signals of the RFID temperature measurement electronic tag (6) are obtained;
the reader-writer reads temperature information according to the temperature sensing information and transmits the temperature information to the upper computer;
and the upper computer displays the temperature and monitors and alarms after acquiring the temperature information.
5. The rail transit vehicle-mounted RFID temperature monitoring system of claim 4,
the leaky cable temperature measuring channel is arranged in the cable groove (6) and used for measuring the temperature of the cable to be measured;
and the RFID temperature measuring electronic tag (1) in the panel antenna temperature measuring channel is arranged on the low-voltage box cable and is used for measuring the temperature of the cable to be measured.
6. The rail transit vehicle-mounted RFID temperature monitoring system of claim 4,
the leaky cable temperature measuring channel and the panel antenna temperature measuring channel share a reader-writer and an upper computer;
the reader-writer and the panel antenna (3) are communicated through a coaxial line.
7. The rail transit vehicle-mounted RFID temperature monitoring system of claim 4, wherein the reader-writer and the upper computer are in wired or wireless communication.
8. The rail transit vehicle-mounted RFID temperature monitoring system of claim 4, wherein a multi-level alarm temperature threshold is set in the upper computer application program, and alarm signals of different levels are issued according to different temperature levels.
9. The rail transit vehicle-mounted RFID temperature monitoring system of claim 4, wherein a reader is arranged in the same carriage,
the upper computer is arranged in the cab;
the temperature information read by the reader-writer of each carriage is uniformly collected on the upper computer.
10. The rail transit vehicle-mounted RFID temperature monitoring system of claim 9, wherein the upper computer is used for controlling temperature reading operation of the reader-writer, storing temperature information, forwarding the temperature information to the vehicle control management system TCMS for centralized display of temperature and alarm of the vehicle information system.
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| CN202010180074.3A CN111199267A (en) | 2020-03-16 | 2020-03-16 | Rail transit vehicle-mounted RFID temperature monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208570A (en) * | 2020-09-11 | 2021-01-12 | 兰州远望信息技术有限公司 | System and method for monitoring locking temperature of railway track |
| CN113280948A (en) * | 2021-05-11 | 2021-08-20 | 江苏中车数字科技有限公司 | Temperature monitoring system based on ultrahigh frequency RFID temperature sensing technology |
| CN113959592A (en) * | 2021-10-21 | 2022-01-21 | 珠海黑石电气自动化科技有限公司 | Antenna configuration method for UHF RFID temperature measurement system of electrical equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170161531A1 (en) * | 2014-08-21 | 2017-06-08 | Murata Manufacturing Co., Ltd. | Method for reading from rfid-tagged article and rfid system |
| CN109307555A (en) * | 2018-10-23 | 2019-02-05 | 中国人民解放军陆军工程大学 | Integrated temperature sensing radio frequency coaxial leakage cable |
| CN110763347A (en) * | 2019-09-23 | 2020-02-07 | 中国电力科学研究院有限公司 | Method, system and device for monitoring temperature of power capacitor based on RFID |
| CN212061215U (en) * | 2020-03-16 | 2020-12-01 | 南京恒伟力信息技术有限公司 | Rail transit vehicle-mounted RFID temperature monitoring system |
-
2020
- 2020-03-16 CN CN202010180074.3A patent/CN111199267A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170161531A1 (en) * | 2014-08-21 | 2017-06-08 | Murata Manufacturing Co., Ltd. | Method for reading from rfid-tagged article and rfid system |
| CN109307555A (en) * | 2018-10-23 | 2019-02-05 | 中国人民解放军陆军工程大学 | Integrated temperature sensing radio frequency coaxial leakage cable |
| CN110763347A (en) * | 2019-09-23 | 2020-02-07 | 中国电力科学研究院有限公司 | Method, system and device for monitoring temperature of power capacitor based on RFID |
| CN212061215U (en) * | 2020-03-16 | 2020-12-01 | 南京恒伟力信息技术有限公司 | Rail transit vehicle-mounted RFID temperature monitoring system |
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