CN104608796A - Motor train unit shaft temperature alarm system and method - Google Patents
Motor train unit shaft temperature alarm system and method Download PDFInfo
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- CN104608796A CN104608796A CN201510052363.4A CN201510052363A CN104608796A CN 104608796 A CN104608796 A CN 104608796A CN 201510052363 A CN201510052363 A CN 201510052363A CN 104608796 A CN104608796 A CN 104608796A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
- B61K9/06—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault by detecting or indicating heat radiation from overheated axles
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Abstract
The invention discloses a motor train unit shaft temperature alarm system and method, and belongs to the technical field of motor train unit control. The motor train unit shaft temperature alarm method includes the following steps that a central processor is connected with a temperature collecting module through an RS 485 bus in the collecting process, obtains temperature change information of PT100 sensors at detected positions, processes the temperature change information internally, and outputs working states and the temperature information of the sensors through a current loop or an MVB interface, and a switching value alarm signal is output through an IO port; meanwhile, recorded data are stored in the blank of a ferroelectric memory of a set size and transferred into NAND Flash to be stored after reaching 128 K, and therefore completeness of the data can be effectively improved, and the service life of the NAND Flash can be effectively prolonged. The temperature information of the detected positions can be fed in real time, controllability and operability can be improved, a false alarm can be further prevented, and the safety of a train is improved.
Description
Technical field
The present invention relates to a kind of motor train unit Axle Temperature Warning System and implementation method, belong to motor train unit control technology field.
Background technology
In motor train unit originally, Axle Temperature Warning System is only a set of Fuse Type relay switch warning device, it is judging to pass through fuse wire after temperature exceedes setting value, disconnect the output that supporting relay switch controls alerting signal, and real-time detection display and data logging are not carried out to temperature.During on-line operation, often report by mistake, and fault cannot review reason after occurring, often affect the operation of train.
Along with the fast development of China Express Railway, speed per hour constantly improves, unprecedented height is also reached to the requirement of safety, originally only the control that can not meet train safe is monitored to axle box temperature, wherein also more and more important to the measurement of gear case and motor.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, solve the problems such as existing axle reporting system function singleness, wrong report.The invention provides a kind of motor train unit Axle Temperature Warning System and implementation method, there is the temperature information of display measured position in real time, possess Axle Temperature Warning System and the implementation method of rigid line and network output alarm signal simultaneously.
The technical scheme that technical solution problem of the present invention adopts is: a kind of implementation method of Axle Temperature Warning System of real-time display, the technical way adopted is the temperature traverse being detected measured position by PT100 temperature sensor, temperature signal is converted to electric signal transmission to temperature collect module, through processing the temperature information gathered and judge, the temperature information that real-time output temperature sensor gathers, and alerting signal.
A kind of motor train unit bearing temperature alarm implementation method, containing following steps:
Central process unit collection is connected with temperature collect module by RS485 bus, obtain the temperature information of measured position PT100 sensor, through inter-process by electric current loop or MVB interface output transducer mode of operation and temperature information, by I/O port output switch amount alerting signal.The data of record are stored in the ferroelectric memory blank space setting size, 128K to be achieved simultaneously, dump in NAND Flash and store, effectively can improve the integraty of data like this and extend NAND Flash service life.
A kind of motor train unit Axle Temperature Warning System, comprises motor train unit Axle Temperature Warning System structure and comprises PT100 temperature sensor, temperature detecting unit and shielding wire fixed strip; Comprise a temperature acquisition main frame and some temperature sensors;
PT100 temperature sensor is used for feedback temperature information, and temperature detecting unit is responsible for information acquisition, and process and output control;
Power subsystem unit is temperature collecting cell, analog controlling unit and communication control interface unit provide power supply; The resistance value collected is converted to corresponding temperature information by temperature collecting cell, and analog controlling unit is to temperature information process and alarm decision, and communication control interface unit communicates with vehicle network, transmission temperature information and alerting signal.
Beneficial effect of the present invention is specific as follows: temperature collect module collection per second temperature information, and be transferred to central process unit, after the complete data of treater dissection process, temperature information is sent once to vehicle network, vehicle network monitor screen can show the temperature information of collected position in real time, can go out alarm message by Real-time Feedback, the car controlling of vehicle network automatic retarding or prompting driver carry out associative operation simultaneously.Put wrong report algorithm to the temperature information data gathered according to stabilization to process, train wrong report can be controlled by actv..
The present invention namely can the temperature information of Real-time Feedback measured position, increases controlled operability, can prevent again wrong report further, improve train safe.
The present invention is directed to the supporting gear case sensor of the Mechanical Builds of gear case and motor and sensor producer joint research and development and electromechanical transducer, it is consistent with axle box temperature sensor principle of work.Can being real-time monitored the temperature of axle box, gear case and motor correspondence position by temperature detecting unit, reporting to the police when there is unusual condition, thus actv. ensures the driving safety of train.
Accompanying drawing explanation
Fig. 1 motor train unit Axle Temperature Warning System of the present invention principle of work schematic diagram;
Fig. 2 motor train unit Axle Temperature Warning System of the present invention equipment connection schematic diagram;
Fig. 3 temperature detecting unit main frame of the present invention connection diagram;
Fig. 4 motor train unit Axle Temperature Warning System of the present invention functional block diagram;
Fig. 5 FB(flow block) of the present invention.
Detailed description of the invention
Embodiment 1: as shown in Figure 1,
A kind of motor train unit Axle Temperature Warning System, central process unit is based on ARM Cortex-M4 kernel, and 512KB flash memory and 128KRAM, have abundant hardware interface resources, and simulation, communication, timing and control external equipment.
Central process unit, except the RAM that self has, coordinates the non-volatile NAND flash storage of serial bus port, and SPI serial MRAM ferroelectric memory.Ferroelectric memory has without time delay, is greater than 100 TFlops read/write, and data retention over time is 10 years, and power failure data such as to protect automatically at the good characteristic.
In order to the needs controlled, central process unit draws the output port of digital quantity simultaneously, and driving relay has carried out the control to outside.When central process unit judges that shaft temperature sensor occurs to report to the police, this port can output alarm on-off model, controls automatic system.
Serial port is central process unit standard port, for inside and outside data communication.By the temperature information of RS485 bus interface temperature collect module and temperature sensor module; Communicated with train TCMS by electric current loop or MVB interface, output transducer state, sensor temperature information exports and alerting signal.
Due to the needs of O&M service, central process unit also provides Ethernet port, and central process unit provides the application that Ethernet MAC holds, and only needs the application providing PHY in periphery.System disposition hommization operating service software, carries out communication by this Ethernet interface and temperature detecting unit, can download, manage, analyze storage data; Can to settings of modifying such as alarm temperature, early warning temperature; Can arrange the sensor pattern of each Measurement channel, wiring standard; Can real-time monitoring system collecting temperature value and temperature curve.
Central process unit needs to arrange a standard time clock, when external clock is abnormal for equipment provides clock standard.
Embodiment 2: a kind of motor train unit Axle Temperature Warning System, as shown in Figure 2; Motor train unit are divided into trailer 1 and power car 2 by compartment.Axle box temperature sensor 4 in trailer 1 system equipment connects temperature detecting unit 3; Axle box temperature sensor 4 in power car 2 system equipment, gearbox temperature sensor 5 and motor temperature sensor 6 connect temperature detecting unit 3; Different with the number in power car compartment according to the trailer body that different automobile types is corresponding.
The measured position temperature information collected and sensor states are transferred to the corresponding network control unit often saving compartment by the temperature detecting unit often saving compartment, and the monitor screen of train network can be monitored temperature value and the sensor states of permutation car measured position in real time.
Embodiment 3:
As shown in Figure 3; each unit that power subsystem unit PPU is temperature detecting unit main frame provides power supply; this power acquisition DC100 turns the design of DC24V input and output insulating power supply; power supply supports 66Vdc ~ 154Vdc input voltage, has input undervoltage, overvoltage protection, output over-voltage protection, overcurrent protection, overheat protector and inputs the functions such as anti-reverse protection.
Monolithic temperature collect module can gather 12 road temperature sensors, and the support of separate unit temperature detecting unit main frame gathers 48 road temperature sensors.Support 2 lines and 3 line sensors, support PT100/PT1000 temperature sensor.
Analog controlling unit is that the data of collection are carried out processing by central processing unit, exports to vehicle network on the one hand, carries out this locality on the one hand and stores.
Temperature detecting unit comprises power subsystem unit PPU, temperature collecting cell TDIU, analog controlling unit ACU, communication control interface unit CIB; Power subsystem unit PPU connects temperature collecting cell TDIU, analog controlling unit ACU and communication control interface unit CIB; Temperature collecting cell TDIU connecting analog control unit ACU; Analog controlling unit ACU connecting communication control interface unit CIB.
DC110V is turned the insulating power supply of DC24V by power subsystem unit PPU; Meet the test criteria that railway line related EMC designs; Carry out reverse power connection, overvoltage and overcurrent protection; Meet the requirement of type test outline;
The range of temperatures of temperature collecting cell TDIU :-50 DEG C to 200 DEG C; The RTD mode of connection: 2 lines or 3 line systems; Temperature resolution: 1 DEG C; Precision: ± 0.05%; Sampling rate: 10 sampling points/second; Input impedance: 1.5M Ω;
Analog controlling unit ACU carries out processing the temperature information gathered, and judges alarm condition, failure message, sensor fault; Data stored record; One road ethernet service interface is provided;
Communication control interface unit CIB is communicated by electric current loop or MVB interface with vehicle network; No. 3 dry contacts export;
Embodiment 4: a kind of motor train unit Axle Temperature Warning System, temperature detecting unit main frame contour structures, adopts the 3U section chassis of cutting; Comprise temperature sensor, temperature collecting cell and shielding wire fixed strip;
Systematical control main frame connects train network by 20mA electric current loop or MVB interface, supports RS485 communication standby functions;
The board order of temperature detecting unit main frame is arranged in order as analog controlling unit, communication control interface unit, temperature collecting cell, temperature collecting cell, temperature collecting cell, temperature collecting cell, power subsystem unit;
Temperature collecting cell adopts DIN41612 adaptor union;
Comprise a temperature acquisition main frame and some temperature sensors composition;
System hommization operating service software, can download, manage, analyze storage data; Can to settings of modifying such as alarm temperature, early warning temperature; Can arrange the sensor pattern of each Measurement channel, wiring standard; Can real-time monitoring system collecting temperature value and temperature curve.
There is the temperature collect module supporting MODBUS communications protocol, PT100/PT1000 tri-line or two line temperature sensors can be gathered;
According to supporting different temperature sensors of position different system such as the axle box gathered, gear case and motors;
A kind of motor train unit bearing temperature alarm implementation method, also comprises the stabilization treatment step devising stabilization false alarm prevention according to actual data analysis; Stabilization treatment step is as follows:
First can judge the state of sensor before temperature detection main frame exports early warning or alerting signal, if the state of sensor be fault or abnormal time, do not export early warning or alerting signal;
Only have sensor states normal, and sensor temperature values is continuous when being greater than early warning value or alarming value 60 times, judges and export this sensor as early warning or warning;
Short circuit sensor, open circuit, acquisition range transfinite and acquisition module is abnormal is all designated as sensor fault;
Sensor abnormality judges: 1 minute inner sensor positive rise temperature value maxim-minimum value >2 ° ~ 5 °;
During system electrification, sensor temperature values is greater than the early-warning parameters value of ferroelectric middle setting;
During system electrification, in same type of sensor, any road sensor temperature values compares one by one with other road sensor temperature values, difference >15 DEG C and number >2.
Systematical control main frame has high density data record function, can analyze the temperature rise process of collection position moment when having an accident;
Main control system adopts DC100 to turn the design of DC24V input and output insulating power supply, and power supply supports 66Vdc ~ 154Vdc input voltage, has input undervoltage, overvoltage protection, output over-voltage protection, overcurrent protection, overheat protector and inputs the functions such as anti-reverse protection;
System has the log recording functions such as communication failure, system start-up time, initialization operation;
Network enabled data-signal early warning and alarming function and rigid line on-off model early warning and alarming function simultaneously;
The demand increased along with user's pick-up transducers supports extended temperature acquisition module, and the support of current separate unit main control system gathers 48 road temperature acquisition sensors;
There is ethernet service interface, the functions such as supported data download, system parameter configuration and monitored control system mode of operation.
Embodiment 5: as shown in Figure 5, a kind of implementation method of motor train unit Axle Temperature Warning System, containing following steps;
Step 100, PT100 temperature sensor is arranged on require to detect axle box, the gear case position such as motor, the resistance value of PT100 temperature sensor can change along with the conversion of temperature, thus can reflect the temperature regime of measured position.
Step 101, by the acquisition channel of the resistance of PT100 resistance by the temperature collect module of the boundary line mode input temp detecting unit of three wire system, the acquisition channel of temperature acquisition to correspondence sends constant current source signal, by comparator circuit process, remove the impact of circuit resistance, calculate corresponding voltage signal, then the work state information converting corresponding temperature information and sensor to transfers data to the central process unit of temperature detecting unit by MODBUS agreement.
Step 102, temperature detecting unit central processing unit ACU part collect data after carry out analysiss judgement, stabilization process is carried out to interfering signal, judge the alarm condition of correspondence position according to solidification algorithm, data logging is carried out to the temperature information of sensor states, collection, communication state and important operation etc. simultaneously.
The transmission of step 103, information divides hardwire interface and network interface, the alarm switch amount signal controlling brake system can be exported by hardwire interface, can output transducer mode of operation, temperature information and early warning and alarming signal by electric current loop or MVB interface network interface.Data can be realized by ethernet network interface to download, the function such as system configuration and operation maintenance simultaneously.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (9)
1. a motor train unit bearing temperature alarm implementation method, is characterized in that containing following steps:
Central process unit collection is connected with temperature collect module by RS485 bus, obtain the temperature information of measured position PT100 sensor, through inter-process by electric current loop or MVB interface output transducer mode of operation and temperature information, by I/O port output switch amount alerting signal; The data of record are stored in the ferroelectric memory blank space setting size, 128K to be achieved simultaneously, dump in NAND Flash and store.
2. a kind of motor train unit bearing temperature alarm implementation method according to claim 1, is characterized in that containing following steps:
Step 100, PT100 temperature sensor is arranged on the axle box, the gear case motor position that require to detect, the resistance value of PT100 temperature sensor can change along with the conversion of temperature, thus can reflect the temperature regime of measured position;
Step 101, by the acquisition channel of the resistance of PT100 resistance by the temperature collect module of the boundary line mode input temp detecting unit of three wire system, the acquisition channel of temperature acquisition to correspondence sends constant current source signal, by comparator circuit process, remove the impact of circuit resistance, calculate corresponding voltage signal, then the work state information converting corresponding temperature information and sensor to transfers data to the central process unit of temperature detecting unit by MODBUS agreement;
Step 102, temperature detecting unit central processing unit ACU part collect data after carry out analysiss judgement, stabilization process is carried out to interfering signal, judge the alarm condition of correspondence position according to solidification algorithm, data logging is carried out to the temperature information of sensor states, collection, communication state and important operation simultaneously;
The transmission of step 103, information divides hardwire interface and network interface, can be exported by hardwire interface and control the alarm switch amount signal of brake system, can output transducer mode of operation, temperature information and early warning and alarming signal by electric current loop or MVB network interface; Data download, system configuration and operation maintenance function can be realized by ethernet network interface simultaneously.
3. a kind of motor train unit bearing temperature alarm implementation method according to claim 2, is characterized in that the stabilization process of step 102 contains following steps:
First can judge the state of sensor before temperature detection main frame exports early warning or alerting signal, if the state of sensor be fault or abnormal time, do not export early warning or alerting signal;
Only have sensor states normal, and sensor temperature values is continuous when being greater than early warning value or alarming value 60 times, judges and export this sensor as early warning or warning;
Short circuit sensor, open circuit, acquisition range transfinite and acquisition module is abnormal is all designated as sensor fault;
Sensor abnormality judges: motor stator sensor positive rise temperature value maxim-minimum value >5 ° in 1 minute; Non-motor stator sensor positive rise temperature value maxim-minimum value >2 °;
During system electrification, sensor temperature values is greater than the early-warning parameters value of ferroelectric middle setting;
During system electrification, in same type of sensor, any road sensor temperature values compares one by one with other road sensor temperature values, difference >15 DEG C and number >2.
4. a motor train unit Axle Temperature Warning System, its feature comprises PT100 temperature sensor, temperature detecting unit and shielding wire fixed strip comprising motor train unit Axle Temperature Warning System structure; Comprise a temperature acquisition main frame and some temperature sensors;
PT100 temperature sensor is used for feedback temperature information, and temperature detecting unit is responsible for information acquisition, and process and output control;
Power subsystem unit is temperature collecting cell, analog controlling unit and communication control interface unit provide power supply; The resistance value collected is converted to corresponding temperature information by temperature collecting cell, and analog controlling unit is to temperature information process and alarm decision, and communication control interface unit and vehicle network carry out communicating, transmitting temperature information and alerting signal.
5. a kind of motor train unit Axle Temperature Warning System according to claim 4, is characterized in that temperature detecting unit comprises power subsystem unit PPU, temperature collecting cell TDIU, analog controlling unit ACU, communication control interface unit CIB; Power subsystem unit PPU connects temperature collecting cell TDIU, analog controlling unit ACU and communication control interface unit CIB; Temperature collecting cell TDIU connecting analog control unit ACU; Analog controlling unit ACU connecting communication control interface unit CIB.
6. a kind of motor train unit Axle Temperature Warning System according to claim 5, is characterized in that temperature detecting unit main frame contour structures, adopts the 3U section chassis of cutting; Comprise temperature sensor, temperature collecting cell and shielding wire fixed strip;
Systematical control main frame connects train network by 20mA electric current loop or MVB interface, supports RS485 communication standby functions;
The board order of temperature detecting unit main frame is arranged in order as analog controlling unit, communication control interface unit, temperature collecting cell, temperature collecting cell, temperature collecting cell, temperature collecting cell, power subsystem unit;
Temperature collecting cell adopts DIN41612 adaptor union;
Comprise a temperature acquisition main frame and some temperature sensors composition;
System hommization operating service software, can download, manage, analyze storage data; Can to modify setting to alarm temperature, early warning temperature; Can arrange the sensor pattern of each Measurement channel, wiring standard; Can real-time monitoring system collecting temperature value and temperature curve.
7. a kind of motor train unit Axle Temperature Warning System according to claim 6, is characterized in that having the temperature collect module supporting MODBUS communications protocol, can gather PT100/PT1000 tri-line or two line temperature sensors;
According to the axle box gathered, gear case and the supporting different temperature sensor of motor position different system;
Systematical control main frame has high density data record function, can analyze the temperature rise process of collection position moment when having an accident;
Main control system adopts DC100 to turn the design of DC24V input and output insulating power supply, and power supply supports 66Vdc ~ 154Vdc input voltage, has input undervoltage, overvoltage protection, output over-voltage protection, overcurrent protection, overheat protector and inputs anti-reverse defencive function;
System has communication failure, system start-up time, initialization operation log recording function.
8. a kind of motor train unit Axle Temperature Warning System according to claim 7, is characterized in that containing network enabled data-signal early warning and alarming and rigid line on-off model early warning and alarming step;
The demand increased along with user's pick-up transducers supports extended temperature acquisition module, and the support of current separate unit main control system gathers 48 road temperature acquisition sensors;
There is ethernet service interface, supported data download, system parameter configuration and monitored control system mode of operation function.
9. a kind of motor train unit Axle Temperature Warning System according to claim 4, is characterized in that motor train unit are divided into trailer and power car by compartment; Axle box temperature sensor in acting trailer system equipment connects temperature detecting unit; Axle box temperature sensor in power car system equipment, gearbox temperature sensor and motor temperature sensor connect temperature detecting unit; The measured position temperature information collected and sensor states are transferred to the corresponding network control unit often saving compartment by the temperature detecting unit often saving compartment, and the monitor screen of train network can be monitored temperature value and the sensor states of permutation car measured position in real time.
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| CN108791357A (en) * | 2018-06-04 | 2018-11-13 | 中车青岛四方机车车辆股份有限公司 | A kind of real-time Axle Temperature Warning System of train |
| CN109109904A (en) * | 2018-06-20 | 2019-01-01 | 东南大学 | A kind of train axle temperature detection device and detection method based on MVB |
| CN110341757A (en) * | 2018-04-03 | 2019-10-18 | 株洲中车时代电气股份有限公司 | A kind of alarm of train axle temperature and speed-limiting protection method and system |
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