CN108072806B - Track circuit fault diagnosis system and method - Google Patents
Track circuit fault diagnosis system and method Download PDFInfo
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- CN108072806B CN108072806B CN201711115110.2A CN201711115110A CN108072806B CN 108072806 B CN108072806 B CN 108072806B CN 201711115110 A CN201711115110 A CN 201711115110A CN 108072806 B CN108072806 B CN 108072806B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
- B61L1/18—Railway track circuits
Abstract
The invention relates to a track circuit fault diagnosis system and a diagnosis method, wherein the diagnosis system comprises an upper computer, a track circuit monitoring and maintenance terminal, an intelligent diagnosis host, a communication interface board and a branching collector, wherein the upper computer is communicated with the track circuit monitoring and maintenance terminal through an Ethernet port, and the track circuit monitoring and maintenance terminal is in data transmission with the intelligent diagnosis host through the Ethernet port; the communication interface board and the branching collector are respectively connected with the track circuit monitoring and maintaining terminal and the intelligent diagnosis host through a CAN bus; the communication interface board is used for collecting the work output voltage and the work output current of the transmitter and uploading the main rail output voltage and the small rail output voltage of the receiver; the branching collector is used for collecting the voltage of the cable side at the transmitting end, the voltage of the cable side at the receiving end, the voltage of the equipment side at the transmitting end and the voltage of the equipment side at the receiving end at the indoor and outdoor interfaces of the track circuit, and uploading current information of the cable side at the transmitting end. The invention can analyze and intelligently judge the fault and give maintenance suggestions.
Description
Technical Field
The invention belongs to the technical field of equipment fault diagnosis, and particularly relates to a ZPW-2000A track circuit fault diagnosis system and a ZPW-2000A track circuit fault diagnosis method.
Background
The track circuit is a circuit system for transmitting information by using a steel rail of a railway line as a conductor to realize section vacancy and occupation inspection, is a basic component unit of an automatic control and remote control system for train operation, and is directly related to the safety and efficiency of transportation if track circuit equipment can normally work.
The ZPW-2000A track circuit is provided with more than 6 ten thousand kilometers on the ordinary speed and high-speed railway in China, and accounts for more than 98 percent of the total application amount of the ordinary speed line interval and the high-speed railway track circuit in China. The ZPW-2000A track circuit system is long in extension, equipment is distributed indoors and outdoors, and once the equipment fails, factors are complex, such as line faults, cable faults, indoor and outdoor equipment faults and the like. On-site maintenance personnel often have difficulty in fault location by experience, the fault troubleshooting time is long, and the railway transportation efficiency is seriously influenced. The existing monitoring and maintenance products only have monitoring record and threshold setting alarm functions, need secondary analysis and judgment by means of the experience of technicians and do not have an analysis and diagnosis function.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a rail circuit fault diagnosis system and a rail circuit fault diagnosis method.
In order to achieve the purpose, the invention adopts the following technical scheme: a track circuit fault diagnosis system is characterized by comprising an upper computer, a track circuit monitoring and maintaining terminal, an intelligent diagnosis host, a communication interface board and a branching collector, wherein the upper computer is communicated with the track circuit monitoring and maintaining terminal through an Ethernet port, and the track circuit monitoring and maintaining terminal is in data transmission with the intelligent diagnosis host through the Ethernet port; the communication interface board and the branching collector are respectively connected with the track circuit monitoring and maintaining terminal and the intelligent diagnosis host through a CAN bus; the communication interface board is used for collecting the work output voltage and the work output current of the transmitter and uploading the main rail output voltage and the small rail output voltage of the receiver; the branching collector is used for collecting the voltage of a transmitting end cable side, the voltage of a receiving end cable side, the voltage of transmitting end equipment side and the voltage of receiving end equipment side at the indoor and outdoor interfaces of the track circuit and uploading current information of the transmitting end cable side.
Furthermore, a direction switching circuit area fault positioning module, a simulation network fault positioning module, a cable channel fault positioning module, a tuning area fault positioning module and a main rail line fault positioning module are arranged in the intelligent diagnosis host; the direction switching circuit area fault positioning module is used for detecting whether a fault exists in an indoor sending end direction switching circuit area and an indoor receiving end direction switching circuit area or not and positioning a fault position; the simulation network fault positioning module is used for detecting whether faults exist in the sending end simulation network and the receiving end simulation network or not and positioning fault positions; the cable channel fault positioning module is used for detecting whether a cable channel of an outdoor sending end and a cable channel of an outdoor receiving end have faults or not and positioning the fault positions; the tuning area fault positioning module is used for detecting whether faults exist in the tuning area of the outdoor sending end and the tuning area of the outdoor receiving end and positioning fault positions; and the main rail line fault positioning module is used for detecting whether a main rail line has a fault or not and positioning the fault position.
Furthermore, an outdoor current detection device is further arranged in the track circuit fault diagnosis system, and the outdoor current detection device is respectively connected with the track circuit monitoring and maintaining terminal and the intelligent diagnosis host through a CAN bus.
Furthermore, the outdoor current detection device collects and uploads the steel rail lead wire current and the cable side current of the outdoor tuning matching unit through the PLC bus.
Furthermore, a rail lead wire fault positioning module is further arranged in the intelligent diagnosis host, and the rail lead wire fault positioning module is used for detecting whether a fault exists in the rail lead wire of the transmitting end tuning matching unit and the rail lead wire of the receiving end tuning matching unit and positioning a fault position.
Furthermore, a display screen is further arranged in the intelligent diagnosis host, and the display screen is used for displaying the fault name, type and position information of the track circuit.
Further, the rail circuit fault diagnosis system is applied to fault diagnosis of a ZPW-2000A rail circuit system, wherein the ZPW-2000A rail circuit system comprises an outdoor part, an indoor part and a system lightning protection part, and the outdoor part comprises a tuning matching unit, an air-core coil, a compensation capacitor and a cable; the indoor section including a transmitter, a receiver, a direction switching circuit, and an attenuator; the lightning protection part of the system comprises a lightning protection simulation network at a sending end and a lightning protection simulation network at a receiving end.
Furthermore, a cloud server is further arranged in the track circuit fault diagnosis system, and the upper computer and the intelligent diagnosis host are communicated with the cloud server through a network.
A track circuit fault diagnosis method comprises the following steps:
monitoring the electrical characteristic change of each section of the track circuit in real time, and judging that the section has a fault when the sections occupy abnormal sequences;
inputting the variable quantity data of the fault section, the two sections before and after the fault section and the pre-stored normal value data into a ZPW-2000A simulation diagnosis model;
and the ZPW-2000A simulation diagnosis model calculates the fault area according to the received variable quantity data and normal value data of each section.
Due to the adoption of the technical scheme, the invention has the following advantages: the track circuit fault diagnosis system is particularly applied to fault diagnosis of the ZPW-2000A track circuit, and can perform secondary operation according to a certain algorithm by utilizing the acquired data, so that the fault can be analyzed and intelligently judged, maintenance and guidance suggestions are given, field personnel are guided to maintain track circuit equipment, the field fault processing efficiency can be greatly improved, and the influence on train transportation is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a track circuit fault diagnosis system provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a ZPW-2000A track circuit system provided in an embodiment of the present invention;
fig. 3 is a flowchart of a track circuit fault diagnosis method provided in an embodiment of the present invention.
In the figure: 1-an upper computer; 2-track circuit monitoring and maintaining terminal; 3-intelligent diagnosis host computer; 4-a communication interface board; 5-branching collector; 6-outdoor current detection equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1, the present invention provides a track circuit fault diagnosis system, which includes an upper computer 1, a track circuit monitoring and maintenance terminal 2, an intelligent diagnosis host 3, a communication interface board 4 and a branching collector 5, wherein the upper computer 1 communicates with the track circuit monitoring and maintenance terminal 2 through an ethernet port, and the track circuit monitoring and maintenance terminal 2 and the intelligent diagnosis host 3 perform data transmission through the ethernet port. The communication interface board 4 and the branching collector 5 are respectively connected with the track circuit monitoring and maintaining terminal 2 and the intelligent diagnosis host 3 through the CAN bus.
The communication interface board 4 is configured to collect a work-out voltage and a work-out current of the transmitter, and upload a main rail output voltage and a small rail output voltage of the receiver. The branching collector 5 is used for collecting the voltage of the cable side at the transmitting end (receiving end) and the voltage of the equipment side at the transmitting end (receiving end) at the indoor and outdoor interfaces of the track circuit and uploading current information of the cable side at the transmitting end.
The track circuit monitoring and maintaining terminal 2 adopts the existing data collection and forwarding products.
The intelligent diagnosis host 3 receives the data uploaded by the track circuit monitoring and maintaining terminal 2 through the Ethernet cable. In fig. 1, the solid line represents an existing information transmission channel, and the dotted line represents an information transmission channel reserved by the intelligent diagnostic host 3, which can be implemented by replacing a multi-port cable.
As shown in fig. 2, the ZPW-2000A track circuit system mainly includes three parts, namely an outdoor part, an indoor part and a system lightning protection part.
The outdoor part comprises a tuning matching unit, an air core coil, a compensation capacitor and a cable. The tuning matching unit and the air coil form a tuning area which is used for realizing the circuit electric isolation of two adjacent tracks. The compensation capacitor is used for ensuring good transmission performance of the track circuit.
The indoor section includes a transmitter, a receiver, a direction switching circuit, and an attenuator. The transmitter is used to generate a highly stable, high precision frequency shifted signal source, which employs microelectronics.
The receiver is mainly used for demodulating the frequency shift signal of the main track circuit and setting an action track relay in cooperation with the checking condition of a short track circuit of a tuning area connected with a power transmission end. It can demodulate the frequency shift signal of short track circuit in the tuning area connected with the power receiving end, give the execution condition of short track circuit, and send it to the circuit receiver of the adjacent track. Meanwhile, the sound condition of the track circuit can be checked, the length of a shunt dead zone is reduced, and the BA disconnection is checked by using the receiving threshold control. Besides receiving the frequency signal of the main track circuit, the receiver also receives the frequency signals of the small track circuits in the adjacent sections at the same time. The receiver adopts DSP digital signal processing technology to rapidly convert the received two frequency signals and make judgment. The attenuator is mainly used for adjusting a main track circuit and a small track circuit.
The system lightning protection part comprises a lightning protection simulation network at a sending end and a lightning protection simulation network at a receiving end. The lightning protection part of the system protects the lightning impulse introduced from the cable transversely and longitudinally.
For the ZPW-2000A track circuit system shown in fig. 2, the intelligent diagnosis host 3 is provided with a direction switching circuit area fault location module, a simulation network fault location module, a cable channel fault location module, a tuning area fault location module, and a main track line fault location module. The direction switching circuit area fault positioning module is used for detecting whether a fault exists in an indoor sending end direction switching circuit area and an indoor receiving end direction switching circuit area or not and positioning a fault position. The simulation network fault positioning module is used for detecting whether faults exist in the sending end simulation network and the receiving end simulation network or not and positioning fault positions. The cable channel fault positioning module is used for detecting whether the outdoor transmitting end cable channel and the outdoor receiving end cable channel have faults or not and positioning the fault positions. And the tuning area fault positioning module is used for detecting whether faults exist in the tuning area of the outdoor sending end and the tuning area of the outdoor receiving end and positioning the fault positions. And the main rail line fault positioning module is used for detecting whether a fault exists in the main rail line and positioning the fault position.
In the above embodiment, as shown in fig. 1, the track circuit fault diagnosis system of the present invention is further provided with an outdoor current detection device 6, and the outdoor current detection device 6 is respectively connected to the track circuit monitoring and maintenance terminal 2 and the intelligent diagnosis host 3 through a CAN bus. The outdoor current detection device 6 collects and uploads the steel rail lead wire current and the cable side current of the outdoor tuning matching unit through the PLC bus.
The intelligent diagnosis host 3 is also provided with a steel rail lead wire fault positioning module which is used for detecting whether the steel rail lead wire of the transmitting end tuning matching unit and the steel rail lead wire of the receiving end tuning matching unit have faults or not and positioning the fault position.
The track circuit fault diagnosis system automatically realizes the positioning of indoor and outdoor faults, the positioning of the fault type and the position of a cable of a transmission channel and the positioning of equipment faults such as a tuning matching unit and the like by calculating the variable quantity of indoor electrical characteristics.
In the above embodiment, the intelligent diagnosis host 3 is further provided with a touch screen, and the touch screen is used for displaying information such as the name, type, and position of the fault of the track circuit, so that field workers can know the fault position conveniently, and can repair and maintain the track circuit in time.
In the above embodiment, still be provided with voice output module in the intelligent diagnosis host computer 3, voice output module is used for carrying out voice broadcast to track circuit's fault type and position to be convenient for site work personnel knows the fault location, can in time carry out maintenance and maintenance.
In the above embodiment, the track circuit fault diagnosis system of the invention is further provided with a cloud server, and the upper computer 1 and the intelligent diagnosis host 3 are both in communication with the cloud server through a network. And the cloud server receives information such as fault types and positions of the track circuits and provides maintenance guidance suggestions.
As shown in fig. 3, the present invention also provides a track circuit fault diagnosis method, which includes the following steps:
and S1, monitoring the electrical characteristic change of each section of the track circuit in real time, and judging that the section has a fault when the sections occupy in an abnormal sequence.
S2, inputting the variation data of three continuous sections (namely a fault section and two sections before and after the fault section) with specific electrical variation and the pre-stored normal value data into the ZPW-2000A simulation diagnosis model.
And S3, the ZPW-2000A simulation diagnosis model calculates the fault area according to the received variation data and normal value data of each section. And outputting the fault area by the upper computer.
The track circuit fault diagnosis system has the following advantages: the installation interface is simple, and no adverse effect is generated on the track circuit; the system can adapt to various software and hardware versions of on-site track circuit equipment and a monitoring maintenance terminal; the method can flexibly adapt to the configuration conditions of various on-site acquisition equipment; under the condition of not changing the configuration, the track can fully cover all the in-use types of the track, including different configurations, different capacitors, different lines, different track beds, different section lengths, different cable lengths and the like; when the voltage change or the occupation state of the section track circuit section is not consistent with the normal running scene of the train, fault early warning positioning and fault alarming positioning can be carried out on the track circuit.
The track circuit fault diagnosis system of the invention carries out logic judgment, comprehensive analysis and processing on data uploaded by indoor and outdoor monitoring points, starts fault diagnosis algorithm logic when judging that voltage and current values of a track section are abnormally changed or abnormal red light bands are generated, positions fault points and outputs fault diagnosis results and processing suggestions to a control display device. The track circuit fault diagnosis system can accurately point to a single point position for about 60 percent of faults without secondary searching.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A track circuit fault diagnosis system is characterized by comprising an upper computer, a track circuit monitoring and maintaining terminal, an intelligent diagnosis host, a communication interface board and a branching collector, wherein the upper computer is communicated with the track circuit monitoring and maintaining terminal through an Ethernet port, and the track circuit monitoring and maintaining terminal is in data transmission with the intelligent diagnosis host through the Ethernet port; the communication interface board and the branching collector are respectively connected with the track circuit monitoring and maintaining terminal and the intelligent diagnosis host through a CAN bus; the communication interface board is used for collecting the work output voltage and the work output current of the transmitter and uploading the main rail output voltage and the small rail output voltage of the receiver; the branching collector is used for collecting the voltage of a transmitting end cable side, the voltage of a receiving end cable side, the voltage of transmitting end equipment side and the voltage of receiving end equipment side at the indoor and outdoor interfaces of the track circuit and uploading current information of the transmitting end cable side;
the rail circuit fault diagnosis system is also provided with outdoor current detection equipment, and the outdoor current detection equipment collects and uploads the steel rail lead wire current and the cable side current of the outdoor tuning matching unit through a PLC bus;
the intelligent diagnosis host is provided with a direction switching circuit area fault positioning module, a simulation network fault positioning module, a cable channel fault positioning module, a tuning area fault positioning module and a main rail line fault positioning module; the direction switching circuit area fault positioning module is used for detecting whether a fault exists in an indoor sending end direction switching circuit area and an indoor receiving end direction switching circuit area or not and positioning a fault position; the simulation network fault positioning module is used for detecting whether faults exist in the sending end simulation network and the receiving end simulation network or not and positioning fault positions; the cable channel fault positioning module is used for detecting whether a cable channel of an outdoor sending end and a cable channel of an outdoor receiving end have faults or not and positioning the fault positions; the tuning area fault positioning module is used for detecting whether faults exist in the tuning area of the outdoor sending end and the tuning area of the outdoor receiving end and positioning fault positions; the main rail line fault positioning module is used for detecting whether a main rail line has a fault or not and positioning a fault position;
the intelligent diagnosis host is also provided with a steel rail lead wire fault positioning module, and the steel rail lead wire fault positioning module is used for detecting whether the steel rail lead wire of the transmitting end tuning matching unit and the steel rail lead wire of the receiving end tuning matching unit have faults or not and positioning the fault position;
the intelligent diagnosis host is also provided with a voice output module, and the voice output module is used for voice broadcasting the fault type and the position of the track circuit;
the intelligent diagnosis host is also reserved with an information transmission channel;
the track circuit fault diagnosis system is also provided with a cloud server, and the cloud server receives fault type information and position information of the track circuit and gives maintenance guidance suggestions.
2. The track circuit fault diagnosis system according to claim 1, wherein the outdoor current detection device is connected to the track circuit monitoring and maintenance terminal and the intelligent diagnosis host through a CAN bus.
3. The track circuit fault diagnosis system according to claim 1 or 2, wherein a display screen is further provided in the intelligent diagnosis host, and the display screen is used for displaying fault names, types and position information of the track circuit.
4. A rail circuit fault diagnosis system according to claim 1 or 2, characterized in that the rail circuit fault diagnosis system is applied for fault diagnosis of a ZPW-2000A rail circuit system; the ZPW-2000A track circuit system comprises an outdoor part, an indoor part and a system lightning protection part, wherein the outdoor part comprises a tuning matching unit, an air-core coil, a compensation capacitor and a cable; the indoor section including a transmitter, a receiver, a direction switching circuit, and an attenuator; the lightning protection part of the system comprises a lightning protection simulation network at a sending end and a lightning protection simulation network at a receiving end.
5. The track circuit fault diagnosis system according to claim 1 or 2, wherein the upper computer and the intelligent diagnosis host are both in communication with the cloud server through a network.
6. A track circuit fault diagnosis method based on the track circuit fault diagnosis system according to any one of claims 1 to 5, comprising the steps of:
monitoring the electrical characteristic change of each section of the track circuit in real time, and judging that the section has a fault when the sections occupy abnormal sequences;
inputting the variable quantity data of the fault section, the two sections before and after the fault section and the pre-stored normal value data into a ZPW-2000A simulation diagnosis model;
and the ZPW-2000A simulation diagnosis model calculates the fault area according to the received variable quantity data and normal value data of each section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115110.2A CN108072806B (en) | 2017-11-13 | 2017-11-13 | Track circuit fault diagnosis system and method |
| PCT/CN2018/086111 WO2019091069A1 (en) | 2017-11-13 | 2018-05-09 | Track circuit fault diagnosis system and diagnosis method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115110.2A CN108072806B (en) | 2017-11-13 | 2017-11-13 | Track circuit fault diagnosis system and method |
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| CN108072806A CN108072806A (en) | 2018-05-25 |
| CN108072806B true CN108072806B (en) | 2020-12-15 |
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| CN201711115110.2A Active CN108072806B (en) | 2017-11-13 | 2017-11-13 | Track circuit fault diagnosis system and method |
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| WO (1) | WO2019091069A1 (en) |
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| CN109032118A (en) * | 2018-09-17 | 2018-12-18 | 兰州交通大学 | Electronics execution unit fault diagnosis and O&M device |
| CN109291961A (en) * | 2018-11-01 | 2019-02-01 | 北京全路通信信号研究设计院集团有限公司 | A kind of monitoring platform |
| CN110132617B (en) * | 2019-05-15 | 2021-03-23 | 成都博瑞时代科技有限公司 | Rail vehicle on-line monitoring system |
| CN110286282A (en) * | 2019-06-19 | 2019-09-27 | 河南辉煌科技股份有限公司 | A kind of long equipment on-line monitoring system and method for hump survey |
| CN110376508A (en) * | 2019-07-23 | 2019-10-25 | 珠海城建现代交通有限公司 | A kind of obstruction resonant mode track circuit center detection system and method |
| CN110641516B (en) * | 2019-10-26 | 2021-10-01 | 深圳科安达电子科技股份有限公司 | Track circuit system detection device capable of setting and adjusting parameters |
| CN111307257B (en) * | 2019-11-11 | 2022-07-01 | 北京全路通信信号研究设计院集团有限公司 | Method and system for measuring weight of hump sliding vehicle |
| CN110920670A (en) * | 2019-12-13 | 2020-03-27 | 斯比夫（西安）照明技术有限公司 | Outdoor monitoring and diagnosing system for track circuit |
| CN112977558B (en) * | 2021-05-10 | 2021-08-10 | 北京全路通信信号研究设计院集团有限公司 | Locomotive signal interference protection method and system during train end-changing operation |
| CN113581248A (en) * | 2021-05-31 | 2021-11-02 | 通号(北京)轨道工业集团有限公司轨道交通技术研究院 | Axle counting monitoring method and system |
| CN113504461A (en) * | 2021-09-09 | 2021-10-15 | 北京全路通信信号研究设计院集团有限公司 | Track circuit fault positioning and processing method and system based on MR technology |
| CN113682344A (en) * | 2021-09-10 | 2021-11-23 | 同济大学 | Track circuit monitoring system and method based on ADS |
| CN113595835B (en) * | 2021-09-27 | 2022-03-04 | 北京全路通信信号研究设计院集团有限公司 | Ground equipment performance test system |
| CN113954907A (en) * | 2021-12-21 | 2022-01-21 | 中铁通信信号勘测设计院有限公司 | 25Hz phase-sensitive track circuit monitoring method and system |
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| GB2193022B (en) * | 1986-07-24 | 1990-08-22 | Westinghouse Brake & Signal | A railway signalling system |
| CN102310870A (en) * | 2011-05-16 | 2012-01-11 | 铁道部运输局 | ZPW-2000A track circuit system |
| CN202204888U (en) * | 2011-09-07 | 2012-04-25 | 宁波思高信通科技有限公司 | Railway outdoor signal integrated communicating and monitoring device |
| CN202206409U (en) * | 2011-09-07 | 2012-04-25 | 宁波思高信通科技有限公司 | Comprehensive railway outdoor signal communication monitoring device |
| US9110951B2 (en) * | 2013-09-16 | 2015-08-18 | GM Global Technology Operations LLC | Method and apparatus for isolating a fault in a controller area network |
| CN203965563U (en) * | 2014-01-03 | 2014-11-26 | 上海铁大电信设备有限公司 | A kind of railway section track circuit comprehensive monitor system off-premises station acquisition terminal |
| CN104228882A (en) * | 2014-09-09 | 2014-12-24 | 宁波思高信通科技有限公司 | Outdoor track circuit integrated monitoring system and method |
| CN105866510B (en) * | 2016-05-17 | 2023-06-06 | 卡斯柯信号有限公司 | Monitoring system for railway outdoor trackside signal equipment |
| CN106143539B (en) * | 2016-07-07 | 2017-12-19 | 苏州长和天成铁路信号有限公司 | Tramcar track switch section based on loop coil takes inspection system and method |
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2017
- 2017-11-13 CN CN201711115110.2A patent/CN108072806B/en active Active
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2018
- 2018-05-09 WO PCT/CN2018/086111 patent/WO2019091069A1/en active Application Filing
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| WO2019091069A1 (en) | 2019-05-16 |
| CN108072806A (en) | 2018-05-25 |
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