CN201923172U - Railway wagon-passenger car axle temperature and air pressure monitoring device based on wireless ad hoc networks - Google Patents
Railway wagon-passenger car axle temperature and air pressure monitoring device based on wireless ad hoc networks Download PDFInfo
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- CN201923172U CN201923172U CN2010206514699U CN201020651469U CN201923172U CN 201923172 U CN201923172 U CN 201923172U CN 2010206514699 U CN2010206514699 U CN 2010206514699U CN 201020651469 U CN201020651469 U CN 201020651469U CN 201923172 U CN201923172 U CN 201923172U
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Abstract
The utility model relates to a device and a method for monitoring railway wagon-passenger car axle temperature and air pressure based on wireless ad hoc networks, which are capable of networking randomly, achieving real-time and accurate monitoring, realizing a low-power-consumption operating mode, and achieving operational simplicity, low maintenance cost and maintenance simplicity. The technical scheme includes that the railway wagon-passenger car axle temperature and air pressure monitoring device based on wireless ad hoc networks is characterized by comprising a head unit and a group of carriage basic units, the head unit and the carriage basic units are built into a network system with a routing function through wireless ad hoc networks, such as ZigBee network, a WiFi (wireless fidelity) network, or a Bluetooth network, the heat unit is composed of a coordinator module, a GSM (global system for mobile communication) communication module, an industrial personal computer and a card reader, and each carriage basic unit is composed of a basic unit module, a parameter acquisition sensor and a battery. The device and the method are applicable to real-time monitoring of physical parameters, such as axle temperature, brake air pressure and the like for a great number of railway wagon clusters.
Description
Technical field
The utility model relates to a kind of wagon axle temperature degree based on wireless ad hoc network, blast real-time monitoring device.Mainly be applicable to the real-time monitoring of the railway truck cluster with enormous quantity being carried out physical parameters such as axletree temperature, braking wind pressure, be applicable to that equally also the lorry troop to other clustered monitors in real time.
Background technology
Axle temperature to the train boxcar wheel among the operation carries out real-time round-the-clock monitoring, safe railway operation had very heavy meaning, especially behind the railway speed increase, monitoring to the train parameter requires to become higher, must be sent to trainman and dispatching and monitoring center fast, in real time, reliably.
The goods train carriage of present operation, on the bearing bush of wheel, fail to install the real time warning device that axle temperature detects because of various reasons, main measurement by the THDS infrared ray contactless device of location fixed point installation on the railway, the alarm detection of this system is installed a cover infrared monitoring device every 30 kilometers, report to the police and be approximately half an hour at interval, this mode exists non real-time property and a certain amount of possible omission, if after the train speed-raising, it is bigger that the omission possibility takes place, will cause overheating of axle bearing etc. than serious accident, consequence is hardly imaginable.
In addition, the braking wind pressure in each joint compartment of operating train lorry also still being failed to realize real-time monitoring at present, equally also is the potential safety hazard that is present in the present railway system.
By retrieval, the patent No. is 200920259074.1 Chinese utility model patent, a kind of train-installed infrared axle temperature monitoring device is disclosed, vehicle-mounted infrared axle temperature monitoring device is installed at the train axle place, solved problems of monitoring in real time, but still have the following disadvantages: the 1) characteristics of being affiliated at boxcar randomness, this technology are difficult in the monitoring that is applied to lorry; 2) adopt wired mode to carry out the signal transmission, the probability that there was a mechanical failure is bigger, and can't provide power supply on lorry; 3) mechanical connection mode, when the position of needs monitorings more for a long time, cable will take big quantity space; 4) during et out of order, from a large amount of cables, find out the concrete cable that has fault, and inconvenient, and when needs are changed, complex procedures, operating difficulties.
The utility model content
For solving the boxcar enormous amount, has free-running property when joining car; Every row goods (visitor) car its joint number of needs because of loading and unloading in the way of travelling can change, and some compartment can be replaced by other compartment in the way; These special difficult problems of AC-less power in goods (visitor) the car compartment, the utility model provides a kind of railway goods passenger vehicle axle temperature, wind pressure monitoring device based on wireless self-networking, one of the utility model purpose is the random groups net mode of realization system, for setting up an intelligent terminating set in every joint compartment, each intelligent terminating set is accepted summoning of headstock in the mode of wireless network and is submitted to the management of headstock; Two of purpose is that monitoring is real-time, accurate, can be to the physical parameter monitoring in real time in 24 hours in every joint in service compartment; Three of purpose is to realize low power mode of operation, and this pattern is to have function when regularly reviving the school, guarantees clock accuracy simultaneously, prolongs the work life of battery to greatest extent; At last, that the utility model is tried hard to is simple to operate, maintenance cost is low, easy maintenance.
The technical scheme that the utility model adopted is: based on the railway goods passenger vehicle axle temperature of wireless self-networking, the wind pressure monitoring device, it is characterized in that this device has comprised a headstock unit and one group of compartment root unit, between headstock unit and each the compartment root unit by the radio ad-hoc network as the ZigBee network, WiFi network or blueteeth network are built into a network system with routing function, wherein, the headstock unit is by coordinator module, the GSM communication module, industrial computer and card reader are formed, and the compartment root unit is by the root unit module, parameter pick-up transducers and battery are formed.
The preferred combinator ZigBee of described coordinator module module, it is in state of activation all the time, and set up a ccasual ZigBee network, be used for to each root unit module send calling signal call the roll queuing, receive alerting signal that each root unit module sends or to each root unit module image data; The preferred root unit ZigBee of described root unit module module, its inside has comprised master cpu, communicating circuit and memory device, and root unit ZigBee module is connected with each parameter pick-up transducers in this compartment.
Described card reader is connected with combinator ZigBee module through industrial computer, and card reader is used to read the information in the information magnetic card of dispatching a car that the dispatcher provides, in this magnetic card with the ID sequence number and the password of each compartment root unit of these row lorry.
Described parameter pick-up transducers is a shaft temperature sensor, and one or two shaft temperature sensor is installed on each wheel shaft in every joint compartment, and an environment temperature sensor also is installed in addition.
Head serviceability collecting unit is housed in the described headstock unit, and described head serviceability comprises braking, alleviation and packing state, and the data that this collecting unit collects are given industrial computer by the ZigBee network delivery.
Described parameter pick-up transducers is wind pressure sensor or blast switch, and the braking that is installed on every joint compartment is used for detecting braking air feed pressure with on the airduct device.
Described root unit ZigBee module and shaft temperature sensor all are installed in the metal matter shielding box, be lined with insulating gasket between root unit ZigBee module and the box body, shaft temperature sensor adopts sheetmetal type temperature sensor and is fixed in the bottom of shielding box, shielding box top is provided with umbrella antenna, is lined with insulating washer between umbrella antenna and the box body.
Described battery outside installs the solar power electroplax additional.Described combinator ZigBee module is connected to telltale and mini-printer.
The beneficial effects of the utility model are: (one) the utility model adopts the networking mode of randomness, can form a provisional radio net at any time, in the railway truck of magnanimity, call out each compartment that belongs to this train, and each compartment submits to the management of head combinator, reports contingent failure condition in real-time 24 hours; (2) monitoring fast, in real time, has accurately improved train speed-raising back safety of railway transportation greatly, is a creation of benefiting the nation and the people; (3) owing to do not have alternating current in the compartment of lorry, the utility model is realized low power mode of operation, and this pattern is to have function when regularly reviving the school, guarantees clock accuracy simultaneously, prolongs the work life of battery to greatest extent; At last, the utility model implements easily, simple to operate, and maintenance cost is low, easy maintenance.
Description of drawings
Fig. 1 is the structural representation of the utility model headstock terminal.
Fig. 2 is the structural representation of the utility model compartment root unit.
Fig. 3 is the utility model system works flow process figure.
The specific embodiment
As shown in Figure 1 and Figure 2, the monitoring device of present embodiment, a headstock unit 1 and one group of compartment root unit 2 have been comprised, keep communicate by letter by the radio ad-hoc network between headstock unit and each compartment root unit, optional radio MANET comprises: ZigBee network, WiFi network or blueteeth network.Present embodiment is considered the requirement of low energy consumption, selects the ZigBee network to make up a network system with routing function, below be the structure composition that example is specifically introduced device just with the ZigBee net.Monitoring device has comprised headstock unit 1 and compartment root unit 2, (grinding China-MIC-2000) and card reader 3 (the flourish scholar ID-05 in Guangzhou) forms by combinator ZigBee module 1-1 (adopting the chip of the STM32W-EMZ-3118 of ST company of STMicw Electronics), GSM communication module 1-2 (the western ADT DTD-S05CI of electronics corporation), industrial computer 1-3 in headstock unit 1, be the needs that show and print, also be equipped with telltale 4 and mini-printer 5 at headstock, these two final terminals all are connected with combinator ZigBee module 1-1.Combinator ZigBee module is in state of activation all the time, and set up a ccasual ZigBee network, be used for sending call the roll queuing or receive data that each root unit module sends in real time and alerting signal or of calling signal initiatively to each root unit module collecting temperature or wind pressure data to each root unit module.This routine compartment root unit 2 is by root unit ZigBee module 2-1 (adopting the chip of the STM32W-EMZ-3018 of ST company of STMicw Electronics), shaft temperature sensor 7 (adopting the model of dallas, u.s.a company is the chip of DSI8B20), environment temperature sensor, wind pressure sensor 8 (can be selected the moving MD-PS001 pressure sensor chip of Taiwan inscription for use, CFBPT UP sensor or CFBM diffusion silicon pressure sensor) or blast switch and battery 6 compositions, its inside of root unit ZigBee module has comprised master cpu, communicating circuit and memory device, root unit ZigBee module is connected with each sensor electrical in this compartment.
Described card reader 3 is connected with combinator ZigBee module 1-1, and card reader is used to read the information in the information magnetic card of dispatching a car that the railway truck dispatcher provides, in this magnetic card with the ID sequence number and the password of each compartment root unit 2 of these row lorry.
Described shaft temperature sensor 7 is installed one or two shaft temperature sensor on each wheel shaft in every joint compartment, an environment temperature sensor is also installed in every in addition joint compartment.Temperature sensor is installed on the axletree equalizer of vehicle, is positioned at directly over the spindle nose about 10 centimetres, and punching is fixed with screw and spring shim.Structurally, the root unit ZigBee module 2-1 in compartment and shaft temperature sensor 7 all are installed in the metal matter shielding box, be lined with insulating gasket between root unit ZigBee module 2-1 and the box body, shaft temperature sensor 7 adopts sheetmetal type temperature sensor and is fixed in the bottom of shielding box, shielding box top is provided with umbrella antenna, is lined with insulating washer between umbrella antenna and the box body.In order further to prolong the service life of battery, install solar power electroplax 6 additional in battery 6 outsides, when sunlight is arranged, carry out floating charge and can in time replenish electric weight.
For moving wind pressure data in compartment and collection, because locomotive is under different running statees, pressure as its braking air pipe under braking mode, relieved state or the packing state is different, therefore for detecting blast, one head serviceability collecting unit 9 must be set in the headstock unit, and the data that this collecting unit collects are also passed through the ZigBee network storage in industrial computer 1-3.And be installed in the wind pressure sensor 8 or the blast switch of each compartment root unit, and use T-pipe joint to be installed near the travelled by vehicle portion train adaptor union place, size is fixed by vehicle, is used for detecting braking air feed pressure.
Be further described below by implementation method of the present utility model and in conjunction with the utility model device:
1, the pairing monitoring device of this method can be worked under ZigBee network, WiFi network or blueteeth network, cut down the consumption of energy in order to economize on electricity, this implementation method has been selected to move under the ZigBee network, and network signal is encrypted, and cipher mode is the cryptographic algorithm of AES.The sending and receiving distance of ZigBee network is not less than 1.5～2 kilometers.
2, train head is set to the combinator pattern, be provided with the headstock unit of forming by combinator ZigBee module 1-1, GSM communication module 1-2, industrial computer 1-3 and card reader 31 in the headstock, telltale 4 and mini-printer 5 have also been disposed in addition, this coordinator module is in state of activation all the time, and sets up an interim ZigBee network that exists.The combinator pattern of this headstock is mainly born following several tasks:
2.1 set up out a new freight trains when setting out, at first the railway truck dispatcher will give the driver information magnetic card of dispatching a car, hang with the sum in compartment above with this train, ID sequence number and signcode that every joint compartment is unique, the driver takes this magnetic card and formerly operates at card reader 3 Card Readers, obtain the list of this array carriage by ID number, and on mini-printer 5, get this list and use for the driver; Meanwhile, the combinator ZigBee module 1-1 of head utilizes the ZigBee network equally by everywhere the compartment of being dispersed on ID number and the password calling list, these compartments are gathered into the new lorry of row, and all compartments all keep communicating by letter under the interim ZigBee network environment of setting up with head.The military service phase of casual network is to next website, takes place to stop behind the replacing compartment, reads once more till the information on the magnetic card, can constantly repeat on travel way.When with manually check number of carriages consistent after, then allow to dispatch a car.
2.2 in the operation way during timing wake-up school, because there is civil power the headstock unit, combinator ZigBee module 1-1 can round-the-clockly move in the sending and receiving mode, revives and order when once checking the school with the headstock unit in each unit, compartment in 2-3 minute, order the clock of unified each compartment root unit when issuing the school.Usually once be no more than 2 minutes during the school, the error of clock request in 2 minutes is no more than 0.0001 second.Whether on-line operation of each compartment root unit of test also is responsible in the headstock unit, prevents to crash, fall machine.
2.3 the headstock unit receives the alerting signal that the compartment root unit is sent at any time, display alarm, prints alerting signal, and by GSM communication module 1-2 alert data is sent to fixed control center, ground.The all right CDMA mobile communication system of outer net, WCDMA GSM, TDS-CDMA GSM, CDMA2000 GSM, GPRS or 3G network.
2.4 under compartment root unit wake states, temperature or pressure data are initiatively collected to the compartment root unit in the headstock unit.
Change the compartment 2.5 advance in the way, if some compartments arrive at a station and leave in the way of advancing, other newly-increased compartments add this lorry, then need be on card reader 3 again the Card Reader queuing call the roll, form new syntagmatic.
3, each joint compartment of train is set to the root unit terminal pattern, and each compartment root unit 2 is made up of root unit ZigBee module 2-1, parameter pick-up transducers (this example comprises shaft temperature sensor 7, environment temperature sensor, wind pressure sensor 8 or blast switch) and battery 6.With the sleep mode operation, the parameter pick-up transducers is all weather operation then at ordinary times for described root unit ZigBee module.The mode of waking the root unit module up has the parameter pick-up transducers to report to the police to wake up and wakes two kinds up by the clock of timer.Each compartment root unit 2 all has unique an ID sequence number and a password.
4, set up into the new railway truck of row by step 2 and step 3 after, subsequent is exactly that card reader 3 is read the information magnetic card of dispatching a car that the dispatcher provides, in the lorry cluster of magnanimity, find each compartment that belongs to this train according to each compartment root unit 2 unique ID sequence number and password, each compartment root unit 2 is sent the calling signal roll-call of ranking, form a provisional wireless network communications system.
5, under normal circumstances, the root unit ZigBee module 2-1 of each compartment root unit 2 revived once every 1-5 minute, preferably revived once in 2 minutes (be heartbeat revive function), each recovery time is 1-3 second (as the pulsation parameter of operation), carry out the clock check and correction and report ID sequence number and data collection task automatically with combinator ZigBee module 1-1 after reviving, if do not receive the alerting signal that sensor is sent when reviving, then each root unit ZigBee module enters dormant state once more.The compartment root unit moves with the cycle mode of " work---standby---work---standby ".
6, when a parameter pick-up transducers output abnormality, the alerting signal of this sensor output will be waken its cooresponding root unit ZigBee module 2-1 up, this root unit ZigBee module is utilized another root unit ZigBee module of the contiguous wake states of ZigBee web search, and alerting signal passed to it, hand-in-hand transmission like this is until the alerting signal data being reported combinator ZigBee module 1-1, if root unit ZigBee module is nearer apart from the position of combinator ZigBee module, promptly in the wireless receiving and dispatching distance range of combinator, then do not transmit, and directly report and submit combinator by adjacent cells;
7, after combinator ZigBee module is received the data of alerting signal, print out of order coach number by mini-printer 5, and on telltale 4, send the warning acousto-optic, with combinator ZigBee module bonded assembly GSM communication module 1-2 alert data is reported ground-surface monitoring and control centre simultaneously.
Embodiment 2.4 in, when combinator ZigBee module 1-1 regularly (the time gap difference of temperature and pressure) when each compartment root unit was carried out image data, the data of collection were delivered in the industrial computer by serial ports UARP or WIFI.Industrial computer is gathered the related data of the last vehicle operating of storing in the compartment root unit earlier, and new data acquisition is analyzed, compared data by the system database special software of industrial computer to the back, as finding difference the greater, promptly points out.Equally, on the memory device of root unit ZigBee module 2-1, also retain the data that a last operation batch is arranged, new data can cover old data automatically.
To the collection of axletree axle temperature, there is shaft temperature sensor 7 and environment temperature sensor of 8 super low-power consumptions in every joint compartment, to the detection range of temperature between-55 ℃～125 ℃.A kind of situation is to surpass 85 ℃～90 ℃ when the temperature of axletree, sensor output alarm data, and when axletree temperature and ambient temperature differed 35 ℃～40 ℃, sensor is the output alarm data also.Another kind of situation is, gather once every 10-20 minute by combinator ZigBee module 1-1, send into after collection is finished and store classification on the industrial computer, industrial computer uses relevant database software that the data of gathering are analyzed comparison, the one, the comparison of axle temperature between each compartment, adjacent compartment axle temperature difference absolute value surpasses 25% (concrete quantized value is formulated by railway technology management department), then industrial computer prompting early warning, the 2nd, compare with the preceding data of once retaining, if aviation value is more or less the same, think then that normally having as indivedual compartments transfinites, then point out early warning and do tracking relatively, be set at the running condition of following the trail of this compartment wheel shaft by software set.
For the collection of carriage brake wind pressure data, two kinds of situations are equally also arranged, a kind of situation is mounted in the wind pressure sensor 8 or the blast switch of compartment root unit and finds that parameter exceeds standard, and will report to the police from trend headstock unit by the ZigBee network.Another kind of situation is to be gathered once every 10-30 minute by combinator ZigBee module 1-1, as mentioned above, because locomotive is in different running statees, as braking mode, relieved state, or the pressure of its braking air pipe is different under the packing state, therefore should under same state, carry out (collection to running state data is finished by the head serviceability collecting unit 9 that is contained in headstock) to the collection of pressure parameter, the data that collect are realized the wind pressure value in each compartment and the absolute value that carries out of adjacent compartment are compared by industrial computer, if outstanding especially inconsistency is arranged, for example the difference of the wind pressure value in the 5th joint compartment and adjacent compartment surpasses 25% (concrete quantized value is formulated by railway technology management department), think that then the braking air pipe blast in this compartment is unusual, industrial computer prompting early warning waits pending.
Claims (9)
1. railway goods passenger vehicle axle temperature based on wireless self-networking, the wind pressure monitoring device, it is characterized in that this device has comprised a headstock unit (1) and one group of compartment root unit (2), between headstock unit and each the compartment root unit by the radio ad-hoc network as the ZigBee network, WiFi network or blueteeth network are built into a network system with routing function, wherein, headstock unit (1) is by coordinator module, GSM communication module (1-2), industrial computer (1-3) and card reader (3) are formed, and compartment root unit (2) is by the root unit module, parameter pick-up transducers and battery (6) are formed.
2. monitoring device according to claim 1, it is characterized in that: the preferred combinator ZigBee of described coordinator module module (1-1), it is in state of activation all the time, and set up a ccasual ZigBee network, be used for to each root unit module send calling signal call the roll queuing, receive alerting signal that each root unit module sends or to each root unit module image data; Described root unit module preferred root unit ZigBee module (2-1), its inside has comprised master cpu, communicating circuit and memory device, and root unit ZigBee module is connected with each parameter pick-up transducers in this compartment.
3. monitoring device according to claim 2, it is characterized in that: described card reader (3) is connected with combinator ZigBee module (1-1) through industrial computer (1-3), card reader is used to read the information in the information magnetic card of dispatching a car that the dispatcher provides, in this magnetic card with the ID sequence number and the password of each compartment root unit (2) of these row lorry.
4. monitoring device according to claim 2 is characterized in that: described parameter pick-up transducers is shaft temperature sensor (7), and one or two shaft temperature sensor is installed on each wheel shaft in every joint compartment, and an environment temperature sensor also is installed in addition.
5. monitoring device according to claim 2, it is characterized in that: head serviceability collecting unit (9) is housed in the described headstock unit (1), described head serviceability comprises braking, alleviation and packing state, and the data that this collecting unit collects are given industrial computer (1-3) by the ZigBee network delivery.
6. monitoring device according to claim 5 is characterized in that: described parameter pick-up transducers is wind pressure sensor (8) or blast switch, and the braking that is installed on every joint compartment is used for detecting braking air feed pressure with on the airduct device.
7. monitoring device according to claim 4, it is characterized in that: described root unit ZigBee module (2-1) and shaft temperature sensor (7) all are installed in the metal matter shielding box, be lined with insulating gasket between root unit ZigBee module (2-1) and the box body, shaft temperature sensor (7) adopts sheetmetal type temperature sensor and is fixed in the bottom of shielding box, shielding box top is provided with umbrella antenna, is lined with insulating washer between umbrella antenna and the box body.
8. monitoring device according to claim 1 is characterized in that: described battery (6) outside installs solar power electroplax (10) additional.
9. monitoring device according to claim 2 is characterized in that: described combinator ZigBee module (1-1) is connected to telltale (4) and mini-printer (5).
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| CN2010206514699U CN201923172U (en) | 2010-11-30 | 2010-11-30 | Railway wagon-passenger car axle temperature and air pressure monitoring device based on wireless ad hoc networks |
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Cited By (15)
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| CN102050138A (en) * | 2010-11-30 | 2011-05-11 | 张兴莲 | Wheel axle temperature and wind pressure monitoring device based on wireless ad hoc networks and method for railway passenger cars or wagons |
| CN102390408A (en) * | 2011-10-25 | 2012-03-28 | 张健 | Safety monitoring system of rail wagon |
| CN102815266A (en) * | 2012-08-27 | 2012-12-12 | 黄立勇 | Real-time vehicle axle temperature monitoring system |
| EP2650191A1 (en) * | 2012-04-12 | 2013-10-16 | Progress Rail Services Corporation | Method of detecting and signalling a hot box condition |
| CN106394601A (en) * | 2016-09-26 | 2017-02-15 | 西安工程大学 | Surface acoustic wave technology-based train axle state monitoring device |
| CN106712442A (en) * | 2017-03-21 | 2017-05-24 | 中南大学 | Magnetic suspension vibration self-generating device of rail wagon and safety monitoring system of magnetic suspension vibration self-generating device |
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| CN107054405A (en) * | 2017-04-19 | 2017-08-18 | 东南大学 | A kind of low-power consumption Locomotive Axletree Temperature Detector |
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| CN102050138A (en) * | 2010-11-30 | 2011-05-11 | 张兴莲 | Wheel axle temperature and wind pressure monitoring device based on wireless ad hoc networks and method for railway passenger cars or wagons |
| CN102050138B (en) * | 2010-11-30 | 2012-12-19 | 张兴莲 | Wheel axle temperature and wind pressure monitoring device based on wireless ad hoc networks and method for railway passenger cars or wagons |
| CN102390408A (en) * | 2011-10-25 | 2012-03-28 | 张健 | Safety monitoring system of rail wagon |
| CN102390408B (en) * | 2011-10-25 | 2013-12-18 | 张健 | Safety monitoring system of rail wagon |
| EP2650191A1 (en) * | 2012-04-12 | 2013-10-16 | Progress Rail Services Corporation | Method of detecting and signalling a hot box condition |
| US8950711B2 (en) | 2012-04-12 | 2015-02-10 | Progress Rail Inspection & Information Systems S.R.L. | Method of detecting and signalling a hot box condition |
| CN102815266A (en) * | 2012-08-27 | 2012-12-12 | 黄立勇 | Real-time vehicle axle temperature monitoring system |
| CN106394601A (en) * | 2016-09-26 | 2017-02-15 | 西安工程大学 | Surface acoustic wave technology-based train axle state monitoring device |
| CN106908166A (en) * | 2017-01-17 | 2017-06-30 | 北京康拓红外技术股份有限公司 | A kind of rolling stock critical component dynamic temperature measurement system and dynamic temperature measurement method |
| CN106882197A (en) * | 2017-03-21 | 2017-06-23 | 中南大学 | A kind of railway freight-car vibration self-generation device and its safety monitoring system |
| CN106712442A (en) * | 2017-03-21 | 2017-05-24 | 中南大学 | Magnetic suspension vibration self-generating device of rail wagon and safety monitoring system of magnetic suspension vibration self-generating device |
| CN106712442B (en) * | 2017-03-21 | 2023-12-26 | 中南大学 | Railway wagon magnetic suspension vibration self-generating device and safety monitoring system thereof |
| CN106809248A (en) * | 2017-03-27 | 2017-06-09 | 康为同创集团有限公司 | Sensor, intelligent monitor system and rail traffic vehicles for track traffic |
| CN107054405A (en) * | 2017-04-19 | 2017-08-18 | 东南大学 | A kind of low-power consumption Locomotive Axletree Temperature Detector |
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