CN103010257A - Bearing temperature monitoring system for high speed electric multiple units - Google Patents
Bearing temperature monitoring system for high speed electric multiple units Download PDFInfo
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- CN103010257A CN103010257A CN201210541079XA CN201210541079A CN103010257A CN 103010257 A CN103010257 A CN 103010257A CN 201210541079X A CN201210541079X A CN 201210541079XA CN 201210541079 A CN201210541079 A CN 201210541079A CN 103010257 A CN103010257 A CN 103010257A
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Abstract
The invention provides a bearing temperature monitoring system for high speed electric multiple units. The bearing temperature monitoring system comprises two bearing temperature monitoring devices and a temperature acquiring module consisting of two temperature sensors; the internal communication between the two bearing temperature monitoring devices adopts an RS485 communication way to perform data exchange; the contents for the data exchange are life signals of various host machines, working states of the temperature acquiring module and acquired temperature values; the two bearing temperature monitoring devices are respectively used for sampling the temperature of the temperature sensors and comparing the sampled temperature with the preset pre-alarming/alarming temperature so as to make pre-alarm/alarm identification; the bearing temperature monitoring devices are used for controlling corresponding digital output, LED (light emitting diode) display and buzzer action, and sending the monitored data to a trail network control system through an external communication module. The bearing temperature monitoring system provided by the invention consists of two parts of bearing temperature monitoring devices and a temperature acquiring module, the integration degree is high, the structure is simple; by adopting a novel device and a software design method, the temperature monitoring precision, the interference resistance capability and working stability for the system are improved; the bearing temperature monitoring system can be used for reminding and guiding a driver to adopt protective measures and inspection operations in time, thus, the accident rate can be effectively reduced, and an active role in arrival on time and safety running of the electric multiple units can be played.
Description
Technical field
The present invention relates to a kind of shaft temperature monitoring system, be applied to monitoring and the warning of the train shaft end temperature in the EMU.
Background technology
Along with the continuous expansion of railway speed increase scope, train speed improves, and tractive output increases, so that the impact of train and rail, dynamic effect and vibration increase, causes the heating of train running part and the large and small gear of gear case to increase.When bearing and large and small gear generation wearing and tearing or generation defective, improper heating increases, and will affect the safe in operation of train.
In train of high-speed motor train unit, the shaft temperature monitoring system of prior art scheme is made of connection box, temperature sensor etc. under axle temperature monitoring device, temperature conversion device, input-output equipment, the car at present.The formation of system is complicated, between the adaptor union that connects select improper, cause the connection virtual connection, come off, the phenomenon that the axle temperature wrong report often occurs, and much equipment are installed under the car, because work under bad environment, the IP degree of protection of itself is also inadequate, cause the dielectric strength of equipment to reduce, reduced Systems balanth.Repeatedly cause speed limit and parking, have a strong impact on the China railways running order.Therefore, develop dependable performance, good high speed train shaft temperature monitoring system, significant to guaranteeing train operating safety.
Summary of the invention
The present invention is directed to the shaft temperature monitoring system above shortcomings of using in the existing high speed train, EMU shaft temperature monitoring system of new generation is provided, this monitoring system can realize the conversion between Pt100 temperature sensor signal and the temperature signal, change the temperature alarming that causes owing to factors such as interference in the Pt100 temperature sensor signal transmission course, reduce the rate of false alarm of monitoring system.
For achieving the above object, the invention provides a kind of EMU shaft temperature monitoring system, it is characterized in that: comprise two axle temperature monitoring devices and the temperature collect module that is consisted of by two temperature sensors, the internal communication of two axle temperature monitoring devices adopts the RS485 communication modes to carry out data exchange, the content of data exchange is the life signal of each main frame, the mode of operation of temperature collect module and the temperature value of collection, two axle temperature monitoring devices respectively to separately temperature sensor carry out temperature sampling and with set pre-/alarm temperature relatively and make pre-/alarm decision, axle temperature monitoring device is controlled corresponding digital output, LED shows and the buzzer phone action, sends monitor data to train network control system by the external communication module.
The axle temperature monitoring device internal main will be by power supply processing module, can transfer multichannel input buffer switch, constant-current source circuit, sensor fault diagnosis circuit, AD modular converter, CPU processing module, digital quantity imput output circuit, internal communication module, external communication module and service interface module to form, power supply processing module converts DC110V to DC24V, DC5V, DC3.3V, and DC24V provides coil voltage for the digital output relay; DC5V, DC3.3V provides power supply voltage for other circuit, constant-current source circuit is exported buffer switch with transferring multichannel, the sensor fault diagnosis circuit is cascaded, constant-current source circuit provides a constant current source to sensor, can transfer the selection of multichannel output buffer switch control sensor passage, the AD modular converter converts the magnitude of voltage of sensor to digital quantity and sends to the CPU processing module, the data of being correlated with are calculated and logical process, the digital quantity imput output circuit links to each other with the CPU processing module, the CPU processing module is by digital quantity input validation device address, provide current status signal by digital output, the internal communication module, the external communication module be connected interface module and directly be connected with the CPU module, the CPU module reaches the realization of each communication by the program of its storage.
The program of CPU module stores comprises:
One, self check starts: after axle temperature monitoring device powers on, can automatically diagnose installing interior all hardware, enter mode of operation after the self check success:
1, RTC-real-time clock, the temperature observation circuit-initialization of LM-circuit card: RTC and LM circuit are carried out initial configuration, if dispose the unsuccessful previous step configuration of returning, carry out next step hardware circuit diagnosis after the configuration successful;
2, hardware diagnostic: reading device outside rigid line address and make digital output diagnose hardware circuit, if diagnose unsuccessfully, return the previous step diagnosis, diagnose the diagnosis of successfully carrying out next step sensor states;
3, sensor states diagnosis: the state of diagnostic sensor if the sensor states mal provides sensor states, enters into normal mode of operation; If sensor states is normal, compose initial value for significantly saltus step diagnosis, enter into normal mode of operation.
4, mode of operation: mode of operation carries out Communication diagnostic and temperature acquisition simultaneously.
Two, temperature acquisition in the mode of operation: by to constant current source of temperature sensor PT100 output, record the magnitude of voltage at PT100 two ends, obtain current resistance value, and convert out current temperature value:
1, whether significantly PT100 voltage acquisition: the voltage at 5 PT100 two ends of continuous acquisition is averaged, and judges whether in normal range, in normal range, carry out the diagnosis of saltus step, and the counting machine in normal range is not carried out zero clearing; If not in normal range, counting machine adds one, accumulative total reaches four times and enters the sensor states diagnosis, enters the collection that next passage carries out PT100 voltage when not reaching four times;
2, significantly saltus step is judged: by with the comparison of initial value, judge the whether significantly saltus step of the voltage that records, if significantly the saltus step counting machine adds one, accumulative total expires and provides significantly four times that jump failure enters the collection that next passage carries out PT100 voltage; If do not have significantly saltus step, this time magnitude of voltage upgraded significantly saltus step initial value;
3, accounting temperature value: normal magnitude of voltage is converted to temperature value, enters the state of temperature diagnosis, empty simultaneously the sensor fault counting machine.
Three, Communication diagnostic in the mode of operation: system receives time and the ambient temperature information that train network control system sends by HDLC or MVB network, and the temperature information of each passage that system is recorded, state of temperature, the information such as sensor states send to train network control system, and system exchanges temperature information and the sensor states that two main frames record mutually by internal communication:
1, internal communication condition diagnosing: a communication cycle of internal communication is 150ms, if the communication mal just carries out fault time-delay timing, does not provide the internal communication fault when continuous 3.4s receives correct data; If can receive normal data in the 3.4s, it is normal to provide internal communication, and empties the fault delay counter;
2, network communication condition diagnosing: a communication cycle of network communication is 200ms, if the communication mal just carries out fault time-delay timing, does not provide the network communication fault when continuous 2s receives correct data; If can receive normal data in the 2s, it is normal to provide network communication, and empties the fault delay counter;
3, network communication is normal: if when network communication and internal communication were all normal, the network communication life signal upgraded; When if a mal is arranged, the network communication life signal is always 00H.
Four, sensor states diagnosis: system through the algorithm optimized to all monitor data short circuit sensors, short circuit, significantly saltus step is judged:
1, diagnosis resistance R 1 sampling: diagnosis resistance R 1 is sampled and judged whether normal.
2, diagnosis resistance R 2 samplings: if the R1 mal is sampled to diagnosis resistance R 2, R2 mal then sensor opens circuit, and delays time to provide sensor fault in five seconds;
3, diagnosis resistance R 2 sampling: if R1 normally samples to diagnosis resistance R 2, R2 is normal, short circuit sensor then, and the time-delay five seconds provides sensor fault, the R2 mal, then ground connection is opened circuit, and delays time to provide sensor fault in five seconds.
Five, state of temperature diagnosis: system carries out early warning, alarm decision through the algorithm of optimizing to the temperature value that records:
Formation according to EMU, all temperature collect modules of system are installed in the axle head on the bogie truck, each bogie truck comprises four axle heads, so the state of temperature diagnosis comprises two parts: the interior axle head temperature contrast of temperature monitoring and whole bogie truck is relatively monitored in the single axle head:
(1) temperature diagnosis in the single axle head
1, alarm decision: the temperature value and the alarm temperature value that record are compared, if reach alarming value, delaying time provided the temperature alarming state in five seconds; If be in normal temperature range, the zero clearing of warning delay counter, and carry out judgement in 2;
2, early warning is judged: will record temperature value and early warning temperature value relatively, if reach early warning value, delaying time provided the temperature pre-warning state in five seconds; If be in normal range, the zero clearing of early warning delay counter;
(2) axle head temperature contrast diagnosis in the whole bogie truck
1, whether internal communication is normal between two devices of interpretation, if internal communication is in normal condition, get two temperature values judgements of installing all temperature sensors (mode of operation has been judged to be normal condition) of monitoring in the same bogie truck, if internal communication is in abnormal state, then gets the temperature value of the temperature sensor (mode of operation has been judged to be normal condition) that this device is monitored in the same bogie truck and judge;
2, alarm decision: maximum difference and the temperature difference alarm temperature value of getting all measured in 1 temperature sensor temperature values compare, if reach alarming value, delaying time provided the temperature alarming state in five seconds; If be in the normal temperature range, the zero clearing of warning delay counter, and carry out judgement in 3;
3, early warning is judged: maximum difference and the temperature difference early warning temperature value of getting all measured in 1 temperature sensor temperature values compare, if reach early warning value, delaying time provided the temperature alarming state in five seconds; If be in the normal temperature range, the zero clearing of early warning delay counter.
Temperature sensor in the temperature collect module is industrial grade probe-type two-way temperature sensor, is installed in the axle box of train bottom bogie truck, monitors the state of temperature of each axle head.
Shaft temperature monitoring system among the present invention is made of axle temperature monitoring device and temperature collect module two parts, and integrated level is high, and is simple in structure, and detouchable cast aluminium shell can be installed on the interior top-hat rail of regulator cubicle it.The Harting Han8 series connector of degree of protection IP68 is adopted in the connection of car lower sensor, guarantees its dielectric strength.Adopt new device and software design approach to improve temperature measurement accuracy, antijamming capability and the working stability of system; prompting and guiding driver in time implement safety method and inspection work; effectively reduced accident rate, reaching on the time and the safe operation of motor train unit played positive role.
Description of drawings
Fig. 1 is that shaft temperature monitoring system forms structured flowchart among the present invention;
Fig. 2 is the inner structured flowchart that forms of axle temperature monitoring device among the present invention;
Fig. 3 is the circuit diagram that the present invention can transfer the multichannel load module;
Fig. 4 is the circuit diagram of constant current source source module of the present invention;
Fig. 5 is the circuit diagram of A/D modular converter of the present invention;
Fig. 6 is the circuit diagram of specific embodiments of the present invention sensor fault diagnosis circuit;
Fig. 7 is self check diagram of circuit of the present invention;
Fig. 8 is temperature acquisition diagram of circuit of the present invention;
Fig. 9 is communication state decision flowchart of the present invention;
Figure 10 is temperature sensor mode of operation decision flowchart of the present invention;
Figure 11 be the present invention pre-the warning decision flowchart.
The specific embodiment
With reference to Fig. 1, system comprises two axle temperature monitoring devices and the temperature collect module that is made of two temperature sensors, the internal communication of two axle temperature monitoring devices adopts the RS485 communication modes to carry out data exchange, and the content of data exchange is the life signal of each main frame, the mode of operation of temperature collect module and the temperature value of collection.Two axle temperature monitoring devices respectively to separately temperature sensor carry out temperature sampling and with set pre-/alarm temperature relatively and make pre-/alarm decision, axle temperature monitoring device is controlled corresponding digital output, LED shows and the buzzer phone action, sends monitor data to train network control system by the external communication module.
With reference to Fig. 2, be provided with in the axle temperature monitoring device such as lower module:
1, power supply processing module: the input end of power supply processing module is connected with power supply, and input voltage DC110V is converted to DC24V, DC5V, DC3.3V.DC24V provides coil voltage for the digital output relay; DC5V, DC3.3V provides power supply voltage for other circuit.Power supply processing module comprises power transfer module and for the protection of the EMC electromagnetic compatibility protection module of circuit; wherein, EMC electromagnetic compatibility protection module comprises current foldback circuit, overvoltage crowbar, short-circuit protection circuit, EMI filter circuit, surge pulse suppression circuit, filter circuit and output filter circuit.
Can transfer multichannel input buffer switch (model: MAX354): can transfer the multichannel input switch to select the conducting of certain road input circuit by CPU, each temperature sensor in the temperature collect module is linked into can transfer the multichannel input switch, and the transmission of temperature collect module is measured after transferring multiple way switch transmission electric current and connected.
Constant-current source circuit: can transfer the multichannel input switch to be provided by constant-current source circuit to the measurement electric current that temperature collect module transmits, constant-current source circuit has guaranteed that the measurement range of A/D modular converter is in perfect condition.
Sensor fault diagnosis circuit: can transfer electric current entrance point and earth point in the multichannel input switch to be linked into respectively resistance R 1 and R2 end in the diagnostic circuit, and judge short circuit, the off state of temperature sensor by the magnitude of voltage of the R1 that measures in the A/D modular converter and R2.
(model: AD7792): the temperature analog signal that temperature collect module is collected is converted to digital signal to the AD modular converter.
The CPU processing module: the CPU processing module is by the DSP(model: TMS320VC33) module and FPGA(model: XC3S1500) module two parts form.The DSP module is responsible for the temperature value of accounting temperature acquisition module and is judged temperature collect module and whole mode of operation.The FPGA module is responsible for digital quantity input and output, internal communication module, external communication module and service interface module.Data after the DSP module is processed oneself simultaneously send the FPGA module to.
Digital quantity imput output circuit: when producing fault or reporting to the police in system, externally export the hard signal of digital quantity.
Internal communication module (RS485 network): the internal communication of two axle temperature monitoring devices adopts the RS485 communication modes to carry out data exchange, and the content of data exchange is the life signal of each main frame, the mode of operation of temperature collect module and the temperature value of collection.
External communication module (MVB network or RS485 network, according to train network system determine): the data communication device that axle temperature monitoring device is monitored is crossed the external communication module and is sent train network control system to.
Service interface module (RS232 network): the engineering staff is by operation procedure and the download related data of this interface module updating device.
With reference to Fig. 3, can transfer multi-channel input circuit by CPU to enable pin En and channel selecting pin A0, A1, the conducting of certain road input circuit is selected in the setting of A2.Shown in the figure only be and the I0 that discharges EN_x_0 signal correction ... front 4 passages of I3, remaining has corresponding EN_x_n control, and the transmission of temperature collect module is measured after transferring multiple way switch transmission electric current and is connected.
With reference to Fig. 4, constant-current source circuit adopts double operational to realize the output of constant current source.Constant current source is 400 A, has guaranteed that the measurement range of A/D converter is in perfect condition.
With reference to Fig. 5,16 bit resolution Sigma-Delta conv AD7792 are used as A/D converter and use.The processing method of this conv well is applicable to industry and respective environment.It has a 95dB common mode inhibition.Integrated adjustable, a digital low filter that passes through that from measurement signal, filters the medium high frequency interference component.There is a restriction input voltage to be the protection switch of ± 5VDC before the A/D converter, effectively prevented the situation of input voltage shakiness.
With reference to Fig. 6, can transfer electric current entrance point and earth point in the multichannel input switch to be linked into respectively resistance R 1 and R2 end in the diagnostic circuit.Judge short circuit, the off state of temperature sensor by the magnitude of voltage of the R1 that measures in the A/D modular converter and R2:
1, to disconnect to be that 100 ohm resistance R 1 is found by resistance to temperature sensor.This resistance works existing under effective power supply status, has 40mV voltage when the circuit that flows through temperature sensor does not disconnect.
2, the temperature sensor short circuit is that the R2 of 100 ohm resistance is found by resistance.This resistance works existing under effective power supply status, has 40mV voltage when the circuit that flows through temperature sensor does not have short circuit.
With reference to Fig. 7, self check starts: after axle temperature monitoring device powers on, can automatically diagnose installing interior all hardware, enter mode of operation after the self check success:
1, RTC (real-time clock), LM (circuit card temperature observation circuit) initialization: RTC and LM circuit are carried out initial configuration, if dispose the unsuccessful previous step configuration of returning, carry out next step hardware circuit diagnosis after the configuration successful;
2, hardware diagnostic: reading device outside rigid line address and make digital output diagnose hardware circuit, if diagnose unsuccessfully, return the previous step diagnosis, diagnose the diagnosis of successfully carrying out next step sensor states;
3, sensor states diagnosis: the state of diagnostic sensor if the sensor states mal provides sensor states, enters into normal mode of operation; If sensor states is normal, compose initial value for significantly saltus step diagnosis, enter into normal mode of operation.
4, mode of operation: mode of operation carries out Communication diagnostic and temperature acquisition simultaneously.
With reference to Fig. 8, temperature acquisition flow process in the mode of operation: by to constant current source of temperature sensor PT100 output, record the magnitude of voltage at PT100 two ends, obtain current resistance value, and convert out current temperature value:
1, whether significantly PT100 voltage acquisition: the voltage at 5 PT100 two ends of continuous acquisition is averaged, and judges whether in normal range, in normal range, carry out the diagnosis of saltus step, and the counting machine in normal range is not carried out zero clearing; If not in normal range, counting machine adds one, accumulative total reaches four times and enters the sensor states diagnosis, enters the collection that next passage carries out PT100 voltage when not reaching four times;
2, significantly saltus step is judged: by with the comparison of initial value, judge the whether significantly saltus step of the voltage that records, if significantly the saltus step counting machine adds one, accumulative total expires and provides significantly four times that jump failure enters the collection that next passage carries out PT100 voltage; If do not have significantly saltus step, this time magnitude of voltage upgraded significantly saltus step initial value;
3, accounting temperature value: normal magnitude of voltage is converted to temperature value, enters the state of temperature diagnosis, empty simultaneously the sensor fault counting machine.
With reference to Fig. 9, Communication diagnostic flow process in the mode of operation: system receives time and the ambient temperature information that train network control system sends by HDLC or MVB network, and the temperature information of each passage that system is recorded, state of temperature, the information such as sensor states send to train network control system, and system exchanges temperature information and the sensor states that two main frames record mutually by internal communication:
1, internal communication condition diagnosing: a communication cycle of internal communication is 150ms, if the communication mal just carries out fault time-delay timing, does not provide the internal communication fault when continuous 3.4s receives correct data; If can receive normal data in the 3.4s, it is normal to provide internal communication, and empties the fault delay counter;
2, network communication condition diagnosing: a communication cycle of network communication is 200ms, if the communication mal just carries out fault time-delay timing, does not provide the network communication fault when continuous 2s receives correct data; If can receive normal data in the 2s, it is normal to provide network communication, and empties the fault delay counter;
3, network communication is normal: if when network communication and internal communication were all normal, the network communication life signal upgraded; When if a mal is arranged, the network communication life signal is always 00H.
With reference to Figure 10, the sensor states diagnostic process: system through the algorithm optimized to all monitor data short circuit sensors, short circuit, significantly saltus step is judged:
1, diagnosis resistance R 1 sampling: diagnosis resistance R 1 is sampled and judged whether normal.
2, diagnosis resistance R 2 samplings: if the R1 mal is sampled to diagnosis resistance R 2, R2 mal then sensor opens circuit, and delays time to provide sensor fault in five seconds;
3, diagnosis resistance R 2 sampling: if R1 normally samples to diagnosis resistance R 2, R2 is normal, short circuit sensor then, and the time-delay five seconds provides sensor fault, the R2 mal, then ground connection is opened circuit, and delays time to provide sensor fault in five seconds.
With reference to Figure 11, the state of temperature diagnostic process: system carries out early warning, alarm decision through the algorithm of optimizing to the temperature value that records:
Formation according to EMU, all temperature collect modules of system are installed in the axle head on the bogie truck, each bogie truck comprises four axle heads, so the state of temperature diagnosis comprises two parts: the interior axle head temperature contrast of temperature monitoring and whole bogie truck is relatively monitored in the single axle head:
One, temperature diagnosis in the single axle head
1, alarm decision: the temperature value and the alarm temperature value that record are compared, if reach alarming value, delaying time provided the temperature alarming state in five seconds; If be in normal temperature range, the zero clearing of warning delay counter, and carry out judgement in 2;
2, early warning is judged: will record temperature value and early warning temperature value relatively, if reach early warning value, delaying time provided the temperature pre-warning state in five seconds; If be in normal range, the zero clearing of early warning delay counter;
Two, axle head temperature contrast diagnosis in the whole bogie truck
1, whether internal communication is normal between two devices of interpretation, if internal communication is in normal condition, get two temperature values judgements of installing all temperature sensors (mode of operation has been judged to be normal condition) of monitoring in the same bogie truck, if internal communication is in abnormal state, then gets the temperature value of the temperature sensor (mode of operation has been judged to be normal condition) that this device is monitored in the same bogie truck and judge;
2, alarm decision: maximum difference and the temperature difference alarm temperature value of getting all measured in 1 temperature sensor temperature values compare, if reach alarming value, delaying time provided the temperature alarming state in five seconds; If be in the normal temperature range, the zero clearing of warning delay counter, and carry out judgement in 3;
3, early warning is judged: maximum difference and the temperature difference early warning temperature value of getting all measured in 1 temperature sensor temperature values compare, if reach early warning value, delaying time provided the temperature alarming state in five seconds; If be in the normal temperature range, the zero clearing of early warning delay counter.
Claims (3)
1. EMU shaft temperature monitoring system, it is characterized in that: comprise two axle temperature monitoring devices and the temperature collect module that is consisted of by two temperature sensors, the internal communication of two axle temperature monitoring devices adopts the RS485 communication modes to carry out data exchange, the content of data exchange is the life signal of each main frame, the mode of operation of temperature collect module and the temperature value of collection, two axle temperature monitoring devices respectively to separately temperature sensor carry out temperature sampling and with set pre-/alarm temperature relatively and make pre-/alarm decision, axle temperature monitoring device is controlled corresponding digital output, LED shows and the buzzer phone action, sends monitor data to train network control system by the external communication module.
2. EMU shaft temperature monitoring system according to claim 1, it is characterized in that: the axle temperature monitoring device internal main will be by power supply processing module, can transfer multichannel input buffer switch, constant-current source circuit, sensor fault diagnosis circuit, AD modular converter, CPU processing module, digital quantity imput output circuit, internal communication module, external communication module and service interface module to form, power supply processing module converts DC110V to DC24V, DC5V, DC3.3V, and DC24V provides coil voltage for the digital output relay; DC5V, DC3.3V provides power supply voltage for other circuit, constant-current source circuit is exported buffer switch with transferring multichannel, the sensor fault diagnosis circuit is cascaded, constant-current source circuit provides a constant current source to sensor, can transfer the selection of multichannel output buffer switch control sensor passage, the AD modular converter converts the magnitude of voltage of sensor to digital quantity and sends to the CPU processing module, the data of being correlated with are calculated and logical process, the digital quantity imput output circuit links to each other with the CPU processing module, the CPU processing module is by digital quantity input validation device address, provide current status signal by digital output, the internal communication module, the external communication module be connected interface module and directly be connected with the CPU module.
3. EMU shaft temperature monitoring system according to claim 2, it is characterized in that: the program of CPU module stores comprises:
One, self check starts: after axle temperature monitoring device powers on, can automatically diagnose installing interior all hardware, enter mode of operation after the self check success:
1, RTC-real-time clock, the temperature observation circuit-initialization of LM-circuit card: RTC and LM circuit are carried out initial configuration, if dispose the unsuccessful previous step configuration of returning, carry out next step hardware circuit diagnosis after the configuration successful;
2, hardware diagnostic: reading device outside rigid line address and make digital output diagnose hardware circuit, if diagnose unsuccessfully, return the previous step diagnosis, diagnose the diagnosis of successfully carrying out next step sensor states;
3, sensor states diagnosis: the state of diagnostic sensor if the sensor states mal provides sensor states, enters into normal mode of operation; If sensor states is normal, compose initial value for significantly saltus step diagnosis, enter into normal mode of operation;
4, mode of operation: mode of operation carries out Communication diagnostic and temperature acquisition simultaneously;
Two, temperature acquisition in the mode of operation: by to constant current source of temperature sensor PT100 output, record the magnitude of voltage at PT100 two ends, obtain current resistance value, and convert out current temperature value:
1, whether significantly PT100 voltage acquisition: the voltage at 5 PT100 two ends of continuous acquisition is averaged, and judges whether in normal range, in normal range, carry out the diagnosis of saltus step, and the counting machine in normal range is not carried out zero clearing; If not in normal range, counting machine adds one, accumulative total reaches four times and enters the sensor states diagnosis, enters the collection that next passage carries out PT100 voltage when not reaching four times;
2, significantly saltus step is judged: by with the comparison of initial value, judge the whether significantly saltus step of the voltage that records, if significantly the saltus step counting machine adds one, accumulative total expires and provides significantly four times that jump failure enters the collection that next passage carries out PT100 voltage; If do not have significantly saltus step, this time magnitude of voltage upgraded significantly saltus step initial value;
3, accounting temperature value: normal magnitude of voltage is converted to temperature value, enters the state of temperature diagnosis, empty simultaneously the sensor fault counting machine;
Three, Communication diagnostic in the mode of operation: system receives time and the ambient temperature information that train network control system sends by HDLC or MVB network, and the temperature information of each passage that system is recorded, state of temperature, the information such as sensor states send to train network control system, and system exchanges temperature information and the sensor states that two main frames record mutually by internal communication:
1, internal communication condition diagnosing: a communication cycle of internal communication is 150ms, if the communication mal just carries out fault time-delay timing, does not provide the internal communication fault when continuous 3.4s receives correct data; If can receive normal data in the 3.4s, it is normal to provide internal communication, and empties the fault delay counter;
2, network communication condition diagnosing: a communication cycle of network communication is 200ms, if the communication mal just carries out fault time-delay timing, does not provide the network communication fault when continuous 2s receives correct data; If can receive normal data in the 2s, it is normal to provide network communication, and empties the fault delay counter;
3, network communication is normal: if when network communication and internal communication were all normal, the network communication life signal upgraded; When if a mal is arranged, the network communication life signal is always 00H;
Four, sensor states diagnosis: system through the algorithm optimized to all monitor data short circuit sensors, short circuit, significantly saltus step is judged:
1, diagnosis resistance R 1 sampling: diagnosis resistance R 1 is sampled and judged whether normal;
2, diagnosis resistance R 2 samplings: if the R1 mal is sampled to diagnosis resistance R 2, R2 mal then sensor opens circuit, and delays time to provide sensor fault in five seconds;
3, diagnosis resistance R 2 sampling: if R1 normally samples to diagnosis resistance R 2, R2 is normal, short circuit sensor then, and the time-delay five seconds provides sensor fault, the R2 mal, then ground connection is opened circuit, and delays time to provide sensor fault in five seconds;
Five, state of temperature diagnosis: system carries out early warning, alarm decision through the algorithm of optimizing to the temperature value that records:
Formation according to EMU, all temperature collect modules of system are installed in the axle head on the bogie truck, each bogie truck comprises four axle heads, so the state of temperature diagnosis comprises two parts: the interior axle head temperature contrast of temperature monitoring and whole bogie truck is relatively monitored in the single axle head:
(1) temperature diagnosis in the single axle head
1, alarm decision: the temperature value and the alarm temperature value that record are compared, if reach alarming value, delaying time provided the temperature alarming state in five seconds; If be in normal temperature range, the zero clearing of warning delay counter, and carry out judgement in 2;
2, early warning is judged: will record temperature value and early warning temperature value relatively, if reach early warning value, delaying time provided the temperature pre-warning state in five seconds; If be in normal range, the zero clearing of early warning delay counter;
(2) axle head temperature contrast diagnosis in the whole bogie truck
1, whether internal communication is normal between two devices of interpretation, if internal communication is in normal condition, get two temperature values judgements of installing all temperature sensors of monitoring in the same bogie truck, if internal communication is in abnormal state, then gets the temperature value of the temperature sensor that this device is monitored in the same bogie truck and judge;
2, alarm decision: maximum difference and the temperature difference alarm temperature value of getting all measured in 1 temperature sensor temperature values compare, if reach alarming value, delaying time provided the temperature alarming state in five seconds; If be in the normal temperature range, the zero clearing of warning delay counter, and carry out judgement in 3;
3, early warning is judged: maximum difference and the temperature difference early warning temperature value of getting all measured in 1 temperature sensor temperature values compare, if reach early warning value, delaying time provided the temperature alarming state in five seconds; If be in the normal temperature range, the zero clearing of early warning delay counter.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723162A (en) * | 2013-10-30 | 2014-04-16 | 深圳市金溢科技有限公司 | Train axle temperature detecting method and vehicle-mounted unit plant |
| CN103786748A (en) * | 2014-02-26 | 2014-05-14 | 苏州缪斯信息科技有限公司 | Rail transit fault on-line monitoring system based on Internet of Things technology |
| CN103900736A (en) * | 2014-04-11 | 2014-07-02 | 国家电网公司 | Fault handling method with broken point displayed through temperature of thermal resistor |
| CN104608796A (en) * | 2015-01-31 | 2015-05-13 | 北京华高世纪科技股份有限公司 | Motor train unit shaft temperature alarm system and method |
| CN104890684A (en) * | 2015-06-25 | 2015-09-09 | 长春轨道客车股份有限公司 | Automatic train speed restricting and speed restriction removing method based on TCMS (train control and management system) |
| CN106482772A (en) * | 2015-08-28 | 2017-03-08 | 罗伯特·博世有限公司 | The method and apparatus identifying at least one sensor fault of at least one first sensor of at least one the first transport facility |
| CN106655514A (en) * | 2016-12-30 | 2017-05-10 | 衡阳泰豪通信车辆有限公司 | Intelligent power distribution system and emergency protection method for communication vehicle |
| CN107054405A (en) * | 2017-04-19 | 2017-08-18 | 东南大学 | A kind of low-power consumption Locomotive Axletree Temperature Detector |
| CN107765617A (en) * | 2016-08-19 | 2018-03-06 | 中车株洲电力机车研究所有限公司 | train axle temperature data processing method and device |
| CN108958218A (en) * | 2018-06-27 | 2018-12-07 | 浙江智海化工设备工程有限公司 | A kind of functional module preventing Temperature jump for control system |
| CN109060173A (en) * | 2018-09-27 | 2018-12-21 | 宁波中车时代传感技术有限公司 | A kind of railcar fluorescence temperature measurement system mode adaptive method and its railcar fluorescence temperature measurement system |
| CN109387303A (en) * | 2018-09-12 | 2019-02-26 | 中车青岛四方机车车辆股份有限公司 | The detection method and device of shaft temperature sensor |
| 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 |
| CN110715808A (en) * | 2019-09-25 | 2020-01-21 | 中车青岛四方机车车辆股份有限公司 | Fault detection method and device |
| CN112051827A (en) * | 2020-08-19 | 2020-12-08 | 中车长春轨道客车股份有限公司 | Debugging system of axle temperature monitoring system based on train network |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723162B (en) * | 2013-10-30 | 2016-03-02 | 深圳市金溢科技股份有限公司 | A kind of train axle temperature method of inspection and board units equipment |
| CN103723162A (en) * | 2013-10-30 | 2014-04-16 | 深圳市金溢科技有限公司 | Train axle temperature detecting method and vehicle-mounted unit plant |
| CN103786748A (en) * | 2014-02-26 | 2014-05-14 | 苏州缪斯信息科技有限公司 | Rail transit fault on-line monitoring system based on Internet of Things technology |
| CN103900736A (en) * | 2014-04-11 | 2014-07-02 | 国家电网公司 | Fault handling method with broken point displayed through temperature of thermal resistor |
| CN103900736B (en) * | 2014-04-11 | 2017-02-08 | 国家电网公司 | Fault handling method with broken point displayed through temperature of thermal resistor |
| CN104608796A (en) * | 2015-01-31 | 2015-05-13 | 北京华高世纪科技股份有限公司 | Motor train unit shaft temperature alarm system and method |
| CN104608796B (en) * | 2015-01-31 | 2017-08-15 | 北京华高世纪科技股份有限公司 | A kind of EMUs Axle Temperature Warning System and implementation method |
| CN104890684A (en) * | 2015-06-25 | 2015-09-09 | 长春轨道客车股份有限公司 | Automatic train speed restricting and speed restriction removing method based on TCMS (train control and management system) |
| CN106482772A (en) * | 2015-08-28 | 2017-03-08 | 罗伯特·博世有限公司 | The method and apparatus identifying at least one sensor fault of at least one first sensor of at least one the first transport facility |
| CN107765617B (en) * | 2016-08-19 | 2020-05-08 | 中车株洲电力机车研究所有限公司 | Train axle temperature data processing method and device |
| CN107765617A (en) * | 2016-08-19 | 2018-03-06 | 中车株洲电力机车研究所有限公司 | train axle temperature data processing method and device |
| CN106655514A (en) * | 2016-12-30 | 2017-05-10 | 衡阳泰豪通信车辆有限公司 | Intelligent power distribution system and emergency protection method for communication vehicle |
| CN107054405A (en) * | 2017-04-19 | 2017-08-18 | 东南大学 | A kind of low-power consumption Locomotive Axletree Temperature Detector |
| 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 |
| CN108958218A (en) * | 2018-06-27 | 2018-12-07 | 浙江智海化工设备工程有限公司 | A kind of functional module preventing Temperature jump for control system |
| CN109387303A (en) * | 2018-09-12 | 2019-02-26 | 中车青岛四方机车车辆股份有限公司 | The detection method and device of shaft temperature sensor |
| CN109387303B (en) * | 2018-09-12 | 2020-09-08 | 中车青岛四方机车车辆股份有限公司 | Detection method and device of shaft temperature sensor |
| CN109060173A (en) * | 2018-09-27 | 2018-12-21 | 宁波中车时代传感技术有限公司 | A kind of railcar fluorescence temperature measurement system mode adaptive method and its railcar fluorescence temperature measurement system |
| CN110715808A (en) * | 2019-09-25 | 2020-01-21 | 中车青岛四方机车车辆股份有限公司 | Fault detection method and device |
| CN110715808B (en) * | 2019-09-25 | 2022-01-14 | 中车青岛四方机车车辆股份有限公司 | Fault detection method and device |
| CN112051827A (en) * | 2020-08-19 | 2020-12-08 | 中车长春轨道客车股份有限公司 | Debugging system of axle temperature monitoring system based on train network |
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