CN203920740U - A kind of railway locomotive traveling portion On-line Fault monitoring diagnosis system - Google Patents
A kind of railway locomotive traveling portion On-line Fault monitoring diagnosis system Download PDFInfo
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Abstract
The utility model relates to a kind of railway locomotive traveling portion On-line Fault monitoring diagnosis system, and the object of the critical component of monitoring locomotive running gear is coated with: wheel tread, increment axle box bearing, non-increment axle box bearing, motor increment bearing, the non-increment bearing of motor, hollow shaft bearing, axle hung bearing, big gear wheel and associated bearings, miniature gears and associated bearings.The vehicle-mounted on-line monitoring and diagnosis to locomotive running gear fault is implemented in reasonable utilization by fault diagnosis technology, and auxiliary in conjunction with same position (or each position of same axletree) the associating diagnostic message of the different axletrees of supporting based on Parallel Hardware, reach the trouble location of accurate positioning vehicle traveling portion, the early fault early warning of realization to locomotive running gear, avoid locomotive to break up the generation of accident, realize the object that technical products ensures locomotive operation security.
Description
Technical Field
The utility model relates to a trouble on-line monitoring diagnostic system, especially a walk capable portion trouble on-line monitoring diagnostic system based on locomotive.
Background
The potential safety hazard of a running part of a railway locomotive is a problem which is very concerned by railway industries of various countries in the world, because the potential safety hazard seriously restricts the development of railway industry, and the serious potential safety hazard can even endanger the safety of lives and properties of people. The strategy implemented by the railways in China and characterized by high speed passenger transportation, heavy freight transportation, long traffic, high density and mixed passenger and freight running seriously examines the railway locomotive, has more prominent safety problem, and all application departments urgently need new technology of fault diagnosis and safety monitoring and product application so as to realize pre-alarming on the fault hidden trouble of the locomotive running part, guide maintenance in time and guarantee the operation safety of the railway locomotive.
In the early stage, the temperature monitoring and alarming system is researched and applied to the potential safety hazard of a locomotive running part in the railway industry of China, but practice proves that the temperature monitoring and alarming system belongs to a post-warning system, has no guiding capability of early warning and preventive maintenance, and has limited capability of safety monitoring and safety guarantee when the locomotive is subjected to a locomotive damage accident once alarming.
In order to improve the safety monitoring and safety guarantee capability of a locomotive running part, the inventor applies a utility model 'a vehicle-mounted on-line monitoring and diagnosis system for rail transit vehicle running part and rail faults' (application number: 200920073984) in 2009, which comprises a vehicle-mounted monitoring and diagnosis system, a ground data analysis and management system, a maintenance personnel information receiving end and a remote technical support system of a monitoring equipment development manufacturer, wherein the vehicle-mounted monitoring and diagnosis system stores data into the ground data diagnosis and analysis and management system through a wireless network or an artificial data storage device; data in the ground data diagnosis, analysis and management system can be transmitted to a remote technical support system of a monitoring equipment development manufacturer through a wide area network; the vehicle-mounted monitoring and diagnosing system can actively send information to a receiving end of ground maintenance personnel, and the receiving end of the ground maintenance personnel can also actively inquire the information through communication equipment. Because the utility model discloses an adopt trouble automatic diagnosis expert system, can gather the analytical data in real time automatically to can accurate discernment trouble type, fault degree and accurate positioning trouble part, reduce the application loss, realize major failure alarm. At present, according to the product of this utility model patent development production, still exert important effect in the safety protection scene of rail transit vehicle running part.
The development of the high-speed railway puts higher requirements on the safety monitoring and safety guarantee capability of a locomotive running part, and prompts the inventor to purposefully perfect and improve the original product, mainly comprising the following steps:
1. the emergency event processing capacity for continuously tracking and recording the measuring points with faults and monitoring other measuring points is increased;
2. the capability of coordinated (or coaxial) joint diagnosis of the point faults based on parallel data is increased;
and the data sharing of the ground data diagnosis analysis management system and the application capability of combining with the business model of the locomotive depot are increased.
Disclosure of Invention
The utility model aims to solve the technical problem that, to prior art not enough, further walk the early warning of line portion trouble, trouble accurate positioning and ground to the locomotive and follow tracks of in succession the locomotive operating mode to the locomotive, the object that the line portion key part was walked to the monitoring locomotive covers: the wheel tread, the gear end box bearing, the non-gear end box bearing, the motor gear end bearing, the motor non-gear end bearing, the hollow shaft bearing, the axle-holding bearing, the big gear and the related bearing, and the small gear and the related bearing; on the basis of the original utility model 'a vehicle-mounted online monitoring and diagnosing system for the running part and the rail fault of a rail transit vehicle' (application number: 200920073984), the online monitoring and diagnosing system for the fault of the running part of the railway locomotive is provided; the vehicle-mounted on-line monitoring and diagnosis of the fault of the locomotive running gear is implemented through reasonable application of a fault diagnosis technology, and the parallel data acquired based on the acquisition function of the parallel data is combined to perform co-location (or coaxial) combined diagnosis information assistance, so that the fault part of the locomotive running gear is accurately positioned, early warning of the fault of the locomotive running gear is realized, the occurrence of damage accidents of the locomotive is avoided, and the running safety of the locomotive is ensured.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the fault on-line monitoring and diagnosing system for the running part of the railway locomotive comprises a vehicle-mounted monitoring and diagnosing system, a plurality of cab display terminals and a ground data analyzing and managing system, wherein the vehicle-mounted monitoring and diagnosing system is connected with the ground data analyzing and managing system in a two-way mode, and the vehicle-mounted monitoring and diagnosing system is connected with the cab display terminals in a two-way mode.
The vehicle-mounted monitoring and diagnosing system comprises a vehicle-mounted monitoring and diagnosing host, a data pre-processor, a rotating speed sensor and a plurality of composite sensors, wherein the vehicle-mounted monitoring and diagnosing host is connected with the data pre-processor and the rotating speed sensor, and the data pre-processor is connected with the composite sensors.
The data pre-processor is characterized by comprising a communication interface unit, a first power supply module, a communication unit, a CPU control unit, an analog signal processing unit, an input interface unit, a digital signal processing unit and a reference temperature sensor, wherein the communication interface unit is connected with the vehicle-mounted monitoring and diagnosing host computer through a multi-path parallel data bus and is connected with the first power supply module, the communication unit and the analog signal processing unit; the communication unit is connected with the CPU control unit, the CPU control unit is connected with the analog signal processing unit and the digital signal processing unit, the digital signal processing unit is connected with the input interface unit, and the input interface unit is connected with the reference temperature sensor and the composite sensor; the first power supply module supplies power to the analog signal processing unit, the communication unit, the CPU control unit, the digital signal processing unit and the input interface unit.
The vehicle-mounted monitoring and diagnosing host comprises a second power module, a multi-path parallel impact signal processing unit, a multi-path parallel A/D sampling unit, a CPU control processing unit, a data storage unit and an interface circuit, wherein the multi-path parallel impact signal processing unit is connected with the multi-path parallel A/D sampling unit and the interface circuit, the multi-path parallel A/D sampling unit is connected with the CPU control processing unit, and the CPU control processing unit is bidirectionally connected with the interface circuit; the CPU control processing unit is connected with a network interface, a data storage unit, a data dump interface, a display interface and an external interface; the second power supply module provides power for the multi-channel parallel impact signal processing unit, the multi-channel parallel A/D sampling unit, the CPU control processing unit, the interface circuit, the network interface, the data storage unit, the data dump interface, the display interface and the peripheral interface; the interface circuit is connected with the cab display terminal, the rotating speed sensor and the communication interface unit of the data preprocessor, and the communication interface unit is connected with the multi-path parallel impact signal processing unit.
Compared with the prior art, the utility model discloses the beneficial effect who has does: the utility model can reduce a great deal of complicated and complicated work of data analysis, analog statistics and the like for maintenance personnel, reduce human errors and greatly improve the application efficiency and performance of the locomotive; the pre-alarm information provided by the vehicle-mounted monitoring and diagnosis system can provide timely and sufficient trend and statistical analysis for the operating state of the locomotive, so that early faults are tracked, maintenance frequency is reduced, and maintenance efficiency is improved; the real-time online alarm for the faults of the heavy locomotive running gear protects the safety of personnel and the operation of the locomotive.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle-mounted monitoring and diagnosing system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a data pre-processor according to an embodiment of the present invention;
fig. 4 is a schematic view of a structure of the vehicle-mounted monitoring and diagnosing host according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, an embodiment of the present invention includes an on-vehicle monitoring and diagnosing system, a ground data analysis and management system, a cab display terminal 1 and a cab display terminal 2. The ground data diagnosis and analysis management system also transmits the software and data to be updated to the vehicle-mounted monitoring and diagnosis system when downloading various detailed data of the locomotive operation acquired by the vehicle-mounted monitoring and diagnosis system next time.
The vehicle-mounted monitoring and diagnosing system (as shown in figure 2) comprises a sensor group at the lower part of the vehicle, a data pre-processor and a vehicle-mounted monitoring and diagnosing host computer at the upper part of the vehicle; the sensor group is arranged on the locomotive running part and used for receiving vibration impact signals, temperature signals and rotating speed signals of key components of the locomotive running part and transmitting the vibration impact signals and the temperature signals to the data preprocessor through a connecting wire of the sensor group; the data preprocessor is connected with the vehicle-mounted monitoring and diagnosing host computer through a multi-channel parallel data bus and a communication interface unit; the rotating speed signal is connected to the vehicle-mounted monitoring and diagnosing host through the sensor group; the vehicle-mounted monitoring and diagnosing system is formed by the vehicle-mounted monitoring and diagnosing host machine for carrying out online parallel data acquisition on the received data of the sensor group of the locomotive running part, responding to a real-time emergency event and carrying out real-time joint diagnosis.
The sensor group (as shown in figure 2) comprises a composite sensor group of temperature and vibration impact double physical quantities and a rotating speed sensor.
Wherein the composite sensor group is manufactured according to the principles of patent invention 200710036156.5A magnetically mounted vibration impact sensor and patent application No. 200810200735.3A generalized resonant composite sensor for detecting vibration impact, which have been granted by the present inventor; monitoring vibration impact signals and temperature signals of key rotating parts of a locomotive running part; the composite sensor group is arranged on monitoring points of key parts of a locomotive running part (see figure 2 for enumerating monitoring point layout of a locomotive model). Monitoring the object coverage of key parts of a locomotive running gear is as follows: the wheel tread, the gear end box bearing, the non-gear end box bearing, the motor gear end bearing, the motor non-gear end bearing, the hollow shaft bearing, the axle-hung bearing, the big gear and the related bearing, the small gear and the related bearing.
The wheel speed monitoring point acts on the speed sensor, and can obtain a wheel speed signal from an independent channel of the speed sensor or a channel which is connected with other equipment on the locomotive and is related to the speed sensor in parallel, so as to be used by a vehicle-mounted monitoring and diagnosing host (as shown in figure 2).
The data preprocessor (see figure 3) comprises a built-in or external reference temperature sensor, an input interface unit, an analog signal processing unit, a digital signal processing unit, a communication unit, a CPU control unit, a multi-path parallel data bus, a communication interface unit and a first power module.
The temperature signal of the built-in or external reference temperature sensor and the (temperature, vibration impact) signal measured by the composite sensor group are divided into two paths to enter the analog signal processing unit and the digital signal processing unit respectively after passing through the input interface unit.
Wherein the CPU control unit manages the analog signal processing unit and the digital signal processing unit; the vehicle-mounted monitoring and diagnosing system is connected with the vehicle-mounted monitoring and diagnosing system in a communication mode through a communication unit, a multi-channel parallel data bus and a communication interface unit; the multi-channel parallel data bus and the communication interface unit transmit the acquired analog signals to the vehicle-mounted monitoring and diagnosing host through the multi-channel parallel data bus and the communication interface unit through bus cables, so that the continuous acquisition and tracking of temperature information and the routing switching of the multi-channel analog signals are realized.
The first power supply module is connected with the vehicle-mounted monitoring and diagnosing host through a multi-channel parallel data bus and a communication interface unit, and is connected with the composite sensor group through an input interface unit to provide a working power supply for the composite sensor group.
The vehicle-mounted monitoring and diagnosing host (see figure 4) comprises a CPU control processing unit (comprising a storage module), an interface circuit, a multi-path parallel signal processing unit, a multi-path parallel A/D acquisition unit, a network interface, a data storage unit, a data dump interface, a display interface, an external interface and a second power supply module. The vehicle-mounted monitoring and diagnosing host machine realizes data acquisition of multi-channel analog signals, continuous tracking of temperature information, response to emergency events, diagnosis of fault impact information, combined diagnosis of homotopic (or coaxial) information based on parallel data, external output alarm information and data, and partitioned storage and operation of vehicle-mounted software.
The interface circuit is connected with the data preprocessor, the rotating speed sensor, the cab display terminal 1 and the cab display terminal 2 respectively, and is also connected with the CPU control processing unit with the storage module to transmit signals and send instructions.
The CPU control processing unit (including a storage module) is simultaneously connected with the multi-channel parallel A/D acquisition unit, the network interface, the data storage unit, the data dump interface, the display interface and the peripheral interface.
The second power supply module supplies power to all units of the vehicle-mounted monitoring and diagnosis host, and also supplies power to the data preprocessor, the rotating speed sensor, the cab display terminal 1 and the cab display terminal 2 through the interface circuit.
The utility model discloses owing to possessed sensor group, data preprocessor, on-vehicle monitoring diagnosis host computer, cab display terminal 1 and cab display terminal 2, through increasing data storage unit, realize that the process data of gathering and on-vehicle software subregion deposit, subregion operate; by adding parallel processing units such as a multi-path parallel signal processing unit, a multi-path parallel A/D acquisition unit and the like, real-time multi-task parallel impact data acquisition and data analysis are realized, and the temperature information tracking of a measuring point is realized uninterruptedly; the method comprises the steps of realizing joint diagnosis of the same-position (or coaxial) fault impact information based on parallel data through parallel fault diagnosis expert system software constructed by a two-dimensional matrix, thereby accurately positioning a fault component and accurately identifying the fault type and the fault degree; the application state of each monitoring point is tracked in real time through the constructed parallel software system platform, once an alarm (temperature or fault impact) occurs at a certain measuring point, the development of the alarm state can be continuously tracked, and meanwhile, the monitoring of other measuring points can be considered, so that the response capability of emergency events is realized.
In fig. 1:
a. the vehicle-mounted monitoring and diagnosing system monitors vibration impact signals, temperature signals and rotating speed signals of key parts of the walking part in real time, and vehicle-mounted fault diagnosis expert system software carries out online real-time diagnosis on all data and gives a diagnosis conclusion in real time;
b. the vehicle-mounted monitoring and diagnosing system sends a fault diagnosis conclusion to a cab display terminal 1 and a cab display terminal 2, and notifies a driver driving a locomotive in any one of the two cabs of fault alarm information;
c. various driving data of the vehicle-mounted monitoring and diagnosis system are led into a ground data diagnosis and analysis management system deployed in a locomotive service section, the system establishes a historical trend database of application state monitoring and fault diagnosis of a locomotive running gear, and automatic fault diagnosis expert system software contained in the system performs various historical trend analysis and statistics; the ground data diagnosis and analysis management system also transmits the software and data to be updated to the vehicle-mounted monitoring and diagnosis system (as shown in figure 1) when downloading various detailed data of the locomotive operation acquired by the vehicle-mounted monitoring and diagnosis system next time.
In fig. 3:
a schematic structural diagram of a data preprocessor of a railway locomotive running gear fault on-line monitoring and diagnosing system is shown in fig. 3, wherein the data preprocessor comprises a CPU control unit (which can be implemented by using a DSPIC30F 5018), an internal or external reference temperature sensor, an input interface unit (which can be implemented by using TLC 59213), an analog signal processing unit (which can be implemented by using ADV 3226), a digital signal processing unit (which can be implemented by using AD 7656), a communication unit (which can be implemented by using PS9714, PCA82C50, SJA1000 and the like), a multi-path parallel data bus and communication interface unit (which can be implemented by using IRF840 and LT 1568) and a first power module, wherein:
a. the method comprises the following steps that a built-in or external reference temperature sensor measures data, a pre-processor (under the condition that a reference temperature sensor is built in), the reference temperature (environment temperature) of a locomotive running part and the temperature obtained by a composite sensor group measuring key parts of the running part enter a digital signal processing unit through an input interface unit, and vibration impact signals obtained by the composite sensor group measuring enter an analog signal processing unit through the input interface unit;
b. the CPU control unit controls the analog signal processing unit to switch the route of the multi-channel parallel vibration impact signal and controls the digital signal processing unit to acquire the temperature signal, controls the communication unit, the multi-channel parallel data bus and the communication interface unit to communicate with the vehicle-mounted monitoring and diagnosing host, and transmits the vibration impact signal after route switching to the vehicle-mounted monitoring and diagnosing host through the multi-channel parallel data bus and the communication interface unit and a bus cable;
c. the power supply of the first power supply module is provided by the vehicle-mounted monitoring and diagnosing host through the multi-path parallel data bus and the communication interface unit, and the power supply is provided for the composite sensor group through the input interface unit.
In fig. 4:
an on-board monitoring and diagnosing host of a railway locomotive running gear fault on-line monitoring and diagnosing system comprises a CPU control processing unit (which CAN be realized by AT91RM9200 and EP2C50F484C 8), an interface circuit (CAN communication use: PCA82C250 and SJA 1000; rotating speed use: PS 9714; display terminal use: SPC3, SP485 and the like), a multi-channel impact signal processing unit (which CAN be realized by LT1568, NE5532 and the like), a multi-channel parallel A/D sampling unit (which CAN be realized by AD 7556), a network interface (which CAN be realized by BCM56440 and HS 9016), a data storage unit (which CAN be realized by K9GBG08U 0A), a data dump interface (which CAN be realized by CH 340), a display interface (which CAN be realized by S3C2410 and the like), a peripheral interface (which CAN be realized by SN74LVCR 32245) and a second power supply module. The system is responsible for dispatching the whole vehicle composite sensor group, parallelly acquiring signals (including shaft temperature, reference temperature and vibration impact) transmitted by all data pre-processors in a multipath manner, carrying out co-location (or coaxial) combined diagnosis and analysis based on parallel data in real time, screening and storing data, sending display information to a cab display terminal 1 and a cab display terminal 2, carrying out sound-light alarm (including overtemperature alarm, temperature rise alarm, classification alarm of vibration impact, working condition information of a monitoring and diagnosing system and the like) if necessary, the operating condition of the locomotive running part and the operating condition of the vehicle-mounted monitoring and diagnosing system can be judged through the display state output by the display interface, the communication connection between the peripheral interface and other equipment of the locomotive (such as a locomotive TAX information platform, a microcomputer screen or locomotive reconnection) is realized through the peripheral interface, and various downloaded driving data can be led into the ground data diagnosis, analysis and management system after the locomotive returns to a locomotive service section. Wherein,
a. the CPU control processing unit with the storage module is the core component of the vehicle-mounted monitoring and diagnosis host and is mainly responsible for scheduling of system transactions, dynamic adjustment of parallel acquisition strategies, data acquisition, emergency event processing, diagnosis analysis (including parallel data-based combined diagnosis) and data storage.
b. The interface circuit is responsible for communication with the whole monitoring and diagnosing system and provides power output by the second power supply module to the peripheral components of the system, such as the data pre-processor, the revolution speed sensor, the cab display terminal 1 and the cab display terminal 2.
c. The input power supply (provided by the locomotive) of the second power supply module is connected to the relevant power supply interface of the locomotive, and the output power supply of the second power supply module provides power for the on-board monitoring and diagnosing host and the interface circuit.
The utility model discloses remain and used the multiple fault diagnosis technique that the people of the invention proposed in solving the operation of railway locomotive: a multi-signal conditioning circuit and composite sensor and a subsequent detector thereof (CN00105992.0), a resonance demodulation detection method of mechanical vibration impact (200910056925.7), a non-transshipment mechanical fault diagnosis system and method (200710034596.7) and the like are used for realizing fault diagnosis of a bearing, a gear and a wheel tread of a walking part, and simultaneously, according to new requirements of a novel locomotive, automatic and real-time parallel acquisition and data analysis are additionally realized, and homotopic (or coaxial) combined diagnosis based on parallel data is realized, so that the fault type, the fault degree and a fault part are accurately identified; the immediate response of an emergency event to the alarm fault is realized, and other monitoring points are taken into consideration; the locomotive running part on-line monitoring and diagnosing system constructed by the technology can perform trend analysis and tracking on the operating condition of the locomotive, thereby lightening a large amount of complicated and complex data analysis, comparison, statistics and comprehensive work of maintenance personnel, reducing human errors and greatly improving the efficiency and the performance of a state monitoring system; the equipment state information can be timely, fully and comprehensively provided; the fault type and the fault degree can be accurately identified, the fault component can be determined, the maintenance efficiency is improved, and the maintenance loss is reduced; the early warning of the fault, the advance maintenance decision and the maintenance preparation, the application loss reduction, the major fault alarm and the safety protection of personnel and equipment are provided with practical and reliable technical support.
Claims (2)
1. A fault on-line monitoring and diagnosing system for a running gear of a railway locomotive comprises a vehicle-mounted monitoring and diagnosing system, a plurality of cab display terminals and a ground data analysis and management system, wherein the vehicle-mounted monitoring and diagnosing system is in bidirectional connection with the ground data analysis and management system, and is in bidirectional connection with the cab display terminals; the vehicle-mounted monitoring and diagnosing system comprises a vehicle-mounted monitoring and diagnosing host, a data pre-processor, a rotating speed sensor and a plurality of composite sensors, wherein the vehicle-mounted monitoring and diagnosing host is connected with the data pre-sensor and the rotating speed sensor, and the data pre-sensor is connected with the composite sensors; the method is characterized in that: the vehicle-mounted monitoring and diagnosing host comprises a second power module, a multi-path parallel impact signal processing unit, a data storage unit, a multi-path parallel A/D sampling unit, a CPU control processing unit and an interface circuit, wherein the multi-path parallel impact signal processing unit is connected with the multi-path parallel A/D sampling unit and the interface circuit, the multi-path parallel A/D sampling unit is connected with the CPU control processing unit, and the CPU control processing unit is bidirectionally connected with the interface circuit; the CPU control processing unit is connected with a network interface, a data storage unit, a data dump interface, a display interface and an external interface; the second power supply module provides power for the multi-channel parallel impact signal processing unit, the multi-channel parallel A/D sampling unit, the CPU control processing unit, the interface circuit, the network interface, the data storage unit, the data dump interface, the display interface and the peripheral interface; the interface circuit is connected with the cab display terminal, the rotating speed sensor and the communication interface unit of the data preprocessor, and the communication interface unit is connected with the multi-path parallel impact signal processing unit.
2. The system for on-line monitoring and diagnosing faults of the running gear of the railway locomotive according to claim 1, wherein the data preprocessor comprises a communication interface unit, a first power supply module, a communication unit, a CPU control unit, an analog signal processing unit, an input interface unit, a digital signal processing unit and a reference temperature sensor, the communication interface unit is connected with the on-board monitoring and diagnosing host computer through a multi-path parallel data bus, and the communication interface unit is connected with the first power supply module, the communication unit and the analog signal processing unit; the communication unit is connected with the CPU control unit, the CPU control unit is connected with the analog signal processing unit and the digital signal processing unit, the digital signal processing unit is connected with the input interface unit, and the input interface unit is connected with the reference temperature sensor and the composite sensor; the first power supply module supplies power to the analog signal processing unit, the communication unit, the CPU control unit, the digital signal processing unit and the input interface unit.
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| CN201320679842.5U CN203920740U (en) | 2013-10-31 | 2013-10-31 | A kind of railway locomotive traveling portion On-line Fault monitoring diagnosis system |
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| CN201320679842.5U CN203920740U (en) | 2013-10-31 | 2013-10-31 | A kind of railway locomotive traveling portion On-line Fault monitoring diagnosis system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105501250A (en) * | 2015-11-25 | 2016-04-20 | 广西大学 | Fault diagnosis method of scuffed train wheel treads based on vehicle-mounted detection device |
| WO2024108627A1 (en) * | 2022-11-25 | 2024-05-30 | 中车长春轨道客车股份有限公司 | Online monitoring system applicable to walking portion of monorail bogie |
-
2013
- 2013-10-31 CN CN201320679842.5U patent/CN203920740U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105501250A (en) * | 2015-11-25 | 2016-04-20 | 广西大学 | Fault diagnosis method of scuffed train wheel treads based on vehicle-mounted detection device |
| CN105501250B (en) * | 2015-11-25 | 2017-09-05 | 广西大学 | Railway wheelset flat sliding method for diagnosing faults based on vehicle-mounted detection apparatus |
| WO2024108627A1 (en) * | 2022-11-25 | 2024-05-30 | 中车长春轨道客车股份有限公司 | Online monitoring system applicable to walking portion of monorail bogie |
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