CN210377578U - Fault diagnosis recorder for safety loop of motor train unit - Google Patents
Fault diagnosis recorder for safety loop of motor train unit Download PDFInfo
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- CN210377578U CN210377578U CN201921708365.4U CN201921708365U CN210377578U CN 210377578 U CN210377578 U CN 210377578U CN 201921708365 U CN201921708365 U CN 201921708365U CN 210377578 U CN210377578 U CN 210377578U
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Abstract
The utility model relates to a EMUs safety loop fault diagnosis record appearance, including the record appearance casing and set up the main control circuit board in the casing, be provided with on the record appearance casing panel with main control circuit board constitute data display module, USB2.0 data transmission interface, on-vehicle equipment communication interface and the measurement data line socket of communication connection; the main control circuit board is connected with an embedded single chip microcomputer, an input signal conditioning circuit module, a U disk memory, a power supply module, a real-time clock circuit module and a working alarm mode conversion circuit module. The recorder can record the working condition and the fault condition information of the safety loop of the motor train unit in real time, and facilitates the fault analysis of the motor train unit. The recorder has the logic analysis and judgment function and the prompt function of the main control circuit, can prompt the fault location and the processing method rapidly, reduces the time for processing the fault in the garage, and ensures the safe operation of the motor train unit.
Description
Technical Field
The utility model relates to a signal processing instrument field, especially a EMUs safety loop fault diagnosis record appearance.
Background
The high-speed motor train unit generally controls the whole train to run by a train network control system, the running safety of the train depends on the train network control system, and once a network communication fault occurs, potential safety hazards can be brought to the motor train unit running at high speed. In order to ensure the operation safety, the motor train unit is generally provided with a safety loop system independent of a train network control system, the system uses the traditional relay contactor to realize hard wire connection to control the operation of the whole motor train unit, and the specific detection function independent of the train network control system can be realized. The fault diagnosis recorder for the safety loop of the motor train unit is mainly used for fault diagnosis and recording of the safety loop of the motor train unit, and particularly capturing and recording instant faults. The motor train unit fault diagnosis instrument can record the working condition and the fault condition information of the motor train unit safety loop in real time, facilitates fault analysis of the motor train unit, has the logic analysis and judgment function and the prompt function of the main control circuit, can prompt a fault occurrence point and a fault processing method rapidly, reduces the time for processing the fault in a warehouse, and ensures safe operation of the motor train unit.
Disclosure of Invention
The utility model aims to solve the technical problem that a EMUs safety loop fault diagnosis record appearance is provided, through the logic control signal of the electrical control cabinet among the real-time sampling and record EMUs safety loop system, but the circuit trouble of real-time diagnosis safety loop system realizes acousto-optic warning function.
In order to solve the technical problem, the utility model discloses a realize according to following mode: the utility model relates to a EMUs safety loop fault diagnosis record appearance includes the record appearance casing and sets up the master control circuit board in the casing, is provided with data display module, USB2.0 data transmission interface, on-vehicle equipment communication interface and the measured data line socket that constitute communication connection with the master control circuit board on the record appearance casing panel; the main control circuit board is connected with an embedded single chip microcomputer, an input signal conditioning circuit module, a U disk memory, a power supply module, a real-time clock circuit module and a working alarm mode conversion circuit module; the embedded single chip microcomputer acquires logic control signal data of the motor train unit through the input signal conditioning circuit module, and identifies date and real-time of the acquired logic control signal data through the real-time clock circuit module which is in communication connection with the embedded single chip microcomputer.
The input signal conditioning circuit module is in communication connection with a general distribution electrical control cabinet arranged in a safety loop of the motor train unit and a running distribution electrical control cabinet arranged in each carriage, and can collect logic control signal data of the general distribution electrical control cabinet and the running distribution electrical control cabinet; the main distribution electric control cabinet monitors working states of a surge pulse interference circuit, a main air pipe pressure switch and a relay arranged on an emergency brake loop of the motor train unit in real time through a communication signal wire, and transmits the monitored relay states to an input signal conditioning circuit module in a mode of logic control signal data; the operation and distribution electric control cabinet monitors the storage battery fault monitoring circuit, the train set marshalling state signal and the working state of the antiskid relay in each carriage in real time through a communication signal line, and transmits the monitored state signal to the input signal conditioning circuit module in a mode of logic control signal data; a motor train unit safety loop fault diagnosis recorder for monitoring the working state of a general distribution electrical control cabinet or a distribution electrical control cabinet can be arranged in a head train of the motor train unit, and a motor train unit safety loop fault diagnosis recorder for monitoring the working state of each distribution electrical control cabinet can be arranged in each carriage.
The U disk memory and the embedded single chip microcomputer form high-speed data transmission connection, and the embedded single chip microcomputer stores the collected logic control signal data for identifying date and real-time into the U disk memory in a 256-byte one-frame mode.
The embedded single chip microcomputer can upload logic control signal data stored in the U disk memory to the mobile computer through the USB2.0 data transmission interface.
The logic control signal data collected by the embedded single chip microcomputer can be displayed on a monitoring site in real time through the data display module.
The power supply module adopts a DC/DC conversion power supply module.
The input signal conditioning circuit module adopts a photoelectric isolation input signal conditioning circuit structure to inhibit strong electromagnetic interference.
The embedded singlechip adopts an 89C55 embedded singlechip of Atmel company.
The embedded single chip microcomputer is in communication connection with a U disk storage system circuit, and the U disk storage system circuit adopts a USB bus interface chip CH 375.
The real-time clock circuit module adopts a real-time clock chip DS12C 887A.
The embedded single chip microcomputer is in communication connection with the transmission cable automatic detection module, the transmission cable automatic detection module is used for reading the interface state of the USB2.0 data transmission interface, when the transmission cable is connected into the USB2.0 data transmission interface, the embedded single chip microcomputer firstly stores the data in the current data buffer, and then the data are transmitted to the mobile computer through the transmission cable connected to the USB2.0 data transmission interface.
The vehicle-mounted equipment communication interface of the embedded single chip microcomputer can be in data communication connection with the vehicle-mounted equipment of the motor train unit through the RS485 bus.
The data display module adopts an LED nixie tube for displaying, alternately and circularly displays date, time and internal information when the logic control signal data acquired by the embedded single chip microcomputer is normal, and displays corresponding codes and gives out audible and visual alarm when the logic control signal data acquired by the embedded single chip microcomputer is abnormal; and an alarm sound cutting key is arranged on the recorder shell and used for stopping the alarm sound of the recorder.
The utility model discloses an actively the effect: a EMUs safety loop fault diagnosis record appearance can real-time recording EMUs safety loop's working condition and fault situation information, the fault analysis of the EMUs of being convenient for. The recorder has the logic analysis and judgment function and the prompt function of a main control circuit, can prompt a fault place and a processing method rapidly, reduces the time for processing the fault in a warehouse, and ensures the safe operation of the motor train unit. Meanwhile, the fault diagnosis recorder for the safety loop of the motor train unit utilizes a large-capacity U disk to form a mass information storage system, and can record and store the running data and the fault information of the motor train unit for a long time of 10 days.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of the framework structure of the present invention;
fig. 2 is the utility model discloses with EMUs monitoring control point communication connection structure schematic diagram.
Detailed Description
As a specific embodiment, a failure diagnosis recorder for a safety loop of a motor train unit sets the performance and working parameters of each module as follows:
1) power supply voltage: DC 100V plus or minus 20%, and power consumption less than or equal to 10W;
2) the measurement sampling period is less than or equal to 100 ms;
3) recording capacity: >250 MB (10 days of operational data may be recorded continuously);
4) communication Baud rate: 38400 bps;
5) measuring the number of branches: 12;
6) measuring the breakover voltage: DC55V + -5V;
7) number of days of operation data storage: long-term;
8) the environmental conditions meet the requirements of TB/T3021-2001 locomotive electronic devices.
As shown in fig. 1, the utility model discloses a EMUs safety loop fault diagnosis record appearance includes the record appearance casing and sets up the main control circuit board in the casing, is provided with data display module, USB2.0 data transmission interface, on-vehicle equipment communication interface and the measured data line socket that constitute communication connection with the main control circuit board on the record appearance casing panel; the main control circuit board is connected with an embedded single chip microcomputer, an input signal conditioning circuit module, a U disk memory, a power supply module, a real-time clock circuit module and a working alarm mode conversion circuit module.
The embedded single chip microcomputer collects logic control signal data of the motor train unit through the input signal conditioning circuit module according to the measurement sampling period being less than or equal to 100 ms, and the real-time clock circuit module which is in communication connection with the embedded single chip microcomputer is used for identifying date and real-time of the collected logic control signal data.
As shown in fig. 2, the input signal conditioning circuit module is in communication connection with a main distribution electrical control cabinet arranged in a safety loop of the motor train unit and a running distribution electrical control cabinet arranged in each compartment, can collect the logic control signal data of the main distribution electrical control cabinet and the operation electrical control cabinet, can judge whether the main distribution electrical control cabinet or one operation electrical control cabinet has problems according to the collected logic control signal data, if the general distribution has problems, the working states of circuit components in the general distribution electrical control cabinet can be intensively checked, if a certain power transmission and distribution control cabinet has a problem, the information collected by a fault diagnosis recorder which is arranged in each carriage and used for monitoring the single carriage can be checked according to the carriage number corresponding to the power transmission and distribution control cabinet, and then the information such as the fault position, the fault occurrence time and the like is judged; the main distribution electric control cabinet monitors working states of a surge pulse interference circuit, a main air pipe pressure switch and a relay arranged on an emergency brake loop of the motor train unit in real time through a communication signal wire, and transmits the monitored relay states to an input signal conditioning circuit module in a mode of logic control signal data; the operation and distribution electric control cabinet monitors the storage battery fault monitoring circuit, the train set marshalling state signal and the working state of the antiskid relay in each carriage in real time through a communication signal line, and transmits the monitored state signal to the input signal conditioning circuit module in a mode of logic control signal data.
The reason for detecting the faults of the storage batteries is that in the use of the motor train unit, if the storage batteries cannot be charged due to the faults of a charger and the excessive discharge of the batteries occurs in the maintenance process of the motor train unit, PbS04 in the valve-controlled sealed lead-acid storage batteries is converted into large irreversible crystal grains, the storage batteries are in a power shortage state for a long time, the aging of the storage batteries is accelerated, the service life of the storage batteries is shortened, and the capacity of the batteries is exhausted in advance. Under normal conditions, the control circuit is powered by the ACU100V direct current, when the motor train unit enters a phase separation zone (1 vehicle is taken as a head vehicle), because the VCB of the motor train unit is disconnected, the control circuit needs to be maintained to be powered by the storage battery, if the capacity of the storage battery pack of 2 vehicles is insufficient and the voltage is too low, the control loop voltage detection protection function acts, the automatic switch of the direct current power supply is tripped, no output of the storage battery of 2 vehicles is caused, and therefore no electricity exists in the relays and the contactors of 2, 4 and 6 vehicles, the loop emergency braking electromagnetic valve UV is powered off, the brake control device BCU is powered off, and the motor train unit generates emergency braking.
Monitoring normal train group formation state signals of the motor train unit is an important item in monitoring data in the running process of the motor train unit. The motor train unit is generally operated by 8 or 16-section vehicles through fixed grouping, the middle of the motor train unit is mechanically connected through a semi-permanent coupler, and the motor train unit is electrically connected through cables with different voltage grades. When a motor train unit is separated in the running process, the state of the related monitored signal line is changed into a power-off state, when the UV of an emergency brake solenoid valve is powered off and the emergency brake function is performed, a JTR emergency brake relay for monitoring whether the brake safety loop works normally is also powered off, the state of the monitored signal line related to the JTR emergency brake relay is changed into the power-off state, and a rapid brake instruction is sent out.
The signal of the working state of the antiskid relay is monitored, so that the extension of the braking distance can be effectively prevented, and the influence on the track possibly caused by the sliding between the wheels and the track is reduced. Since a vehicle running at a high speed is affected by weather conditions such as speed, rain, frost and snow, and conditions of the upper surface of a rail and the road surface of a wheel (such as rust, dirt caused by adhered grease or dust, roughness of a tread surface, and the like), an abnormal decrease in an adhesion coefficient occurs, and in this case, braking is performed, the wheel may slide with respect to the rail, a grip (adhesion) may be formed in a serious case, and after the wheel is locked (adhesion), if an anti-slip control is not performed in time, the friction surface of the wheel is abnormally worn and becomes a flat surface, and if a braking distance is not increased, a reduction in a riding comfort may be involved, which may have a bad influence on the rail.
When a lifting bow, an excessive phase and an inductive load are put into operation and cut off in the running of the motor train unit, transient high-voltage pulses are generated between a train body and a control lead, the emergency electromagnetic valve is powered off when the transient high-voltage pulses are serious, the motor train unit generates emergency braking, and fault data can be collected and fed back to the input signal conditioning circuit module by monitoring the working state of a relay of a surge pulse interference circuit in real time.
The U disk memory and the embedded single chip microcomputer form high-speed data transmission connection, and the embedded single chip microcomputer stores the collected logic control signal data for identifying date and real-time into the U disk memory in a 256-byte one-frame mode.
The embedded single chip microcomputer can upload logic control signal data stored in the U disk memory to the mobile computer through the USB2.0 data transmission interface.
The logic control signal data collected by the embedded single chip microcomputer can be displayed on a monitoring site in real time through the data display module.
The power module adopts a DC/DC conversion power module (DC 100V +/-20%, power consumption is less than or equal to 10W), the DC/DC conversion power module adopts a power electronic technology, the voltage stabilization precision is high, the performance is stable, the reliability is high, the output voltage precision is +/-0.2%, the source effect is less than 0.2%, the special power supply designs a very wide voltage stabilization range (-60% to + 150%) and high overvoltage resistance to the input voltage in consideration of the use conditions on the motor train unit, and the special power supply can stably work for a long time under the condition of 150% overvoltage.
As the motor train unit has random strong electromagnetic interference during operation, the safety loop fault diagnosis recorder requires that the recorded data does not have errors, otherwise, the data analysis loses significance. Therefore, the input signal conditioning circuit module adopts a photoelectric isolation input signal conditioning circuit structure for inhibiting strong electromagnetic interference, and the photoelectric isolation input signal conditioning circuit has high-speed sampling and digital filtering functions.
The embedded single chip microcomputer adopts an 89C55 embedded single chip microcomputer of Atmel company, has high performance and strong anti-interference capability, has large program space and memory space, is convenient to complete complex data processing, and has strong function expansion capability.
The embedded single chip microcomputer is in communication connection with the U disk storage system circuit, the U disk storage system circuit adopts a USB bus interface chip CH375, and the CH375 provides an interface for connecting the U disk storage and the embedded single chip microcomputer.
The real-time clock circuit module adopts a real-time clock chip DS12C887A to provide date and time, and can enable the recorded logic control signal data to have accurate time positioning by arranging the real-time clock circuit module, wherein the accurate time positioning is necessary when analyzing the operation condition or the fault condition of the locomotive. The independent real-time clock circuit module is arranged, so that the time precision is improved, the circuit is simplified, and the reliability and the maintainability of the recorder are improved.
The embedded single chip microcomputer and the transmission cable automatic detection module form communication connection, the motor train unit safety loop fault diagnosis recorder automatically detects the connection and disconnection of the special signal transmission cable, establishes communication with the mobile computer through a handshaking signal, and ensures that high-speed USB2.0 data transmission interface transmission has certain software fault tolerance capability by adopting the SUM check code and an error data retransmission mechanism, thereby ensuring that the data transmission also has higher reliability even in the environment with strong interference in power supply of the motor train unit. The transmission cable automatic detection module is used for reading the interface state of the USB2.0 data transmission interface, when the transmission cable is connected to the USB2.0 data transmission interface, the embedded single chip microcomputer firstly stores the data in the current data buffer, then transmits the data to the mobile computer through the transmission cable connected to the USB2.0 data transmission interface, and displays the characters of the USB-PC on the data display module. When technicians need to use the notebook computer to read data recorded by the motor train unit safety loop fault diagnosis recorder, the data can be uploaded to the notebook computer through the USB2.0 high-speed data transmission interface by using a special signal transmission cable.
The vehicle-mounted equipment communication interface of the embedded single chip microcomputer can be in data communication connection with the vehicle-mounted equipment of the motor train unit through the RS485 bus.
The data display module adopts an LED nixie tube for displaying, alternately and circularly displays date, time and internal information when the logic control signal data acquired by the embedded single-chip microcomputer is normal, displays corresponding codes and gives out an acousto-optic alarm when the logic control signal data acquired by the embedded single-chip microcomputer is abnormal, can help technicians to read related data on site, and is convenient for monitoring the running state of the motor train unit on site; and an alarm sound cutting key is arranged on the recorder shell and used for stopping the alarm sound of the recorder.
The motor train unit safety loop fault diagnosis recorder is provided with data analysis software, and data recorded by the recorder can be uploaded and stored in a hard disk of a notebook computer. The software also has a function of analyzing data stored in the notebook computer, and sets the sampling period, date or time, uploading data, analyzing data and the like of the motor train unit safety loop fault diagnosis recorder by selecting menu commands such as parameter setting, time setting, data uploading, data analysis and the like to complete the setting of each function of the device.
The fault diagnosis recorder for the safety loop of the motor train unit is mainly used for real-time recording, fault diagnosis, fault alarm and fault information prompt of operation data of the safety loop of the motor train unit. Aiming at the problems that the electric contacts of the safety loop of the motor train unit are various, random and sudden instantaneous faults are easy to occur during operation and warehousing tests, if the faults can not be quickly found out to be processed, parking and warehousing-out delay are easy to occur, the key signals and the electricity obtaining logic of the safety loop of the motor train unit are introduced into a fault diagnosis recorder, so that the operation data of the safety loop of the motor train unit can be recorded in real time, and the fault diagnosis recorder helps maintainers to quickly find, position and analyze the faults of the safety loop of the motor train unit.
The above-mentioned just illustrate with the illustration the utility model relates to a EMUs safety loop fault diagnosis recorder's some functional structure principles, because to the technical personnel of the same technical field very easily carry out a plurality of modifications on this basis, consequently this description will not the EMUs safety loop fault diagnosis recorder limit to show or concrete mechanism and application scope in, the event is the corresponding modification and the equivalent that probably are utilized all belongs to the protection scope of the utility model.
Claims (9)
1. The utility model provides a EMUs safety loop fault diagnosis record appearance, includes the record appearance casing and sets up the main control circuit board in the casing, its characterized in that: a data display module, a USB2.0 data transmission interface, a vehicle-mounted equipment communication interface and a measurement data line socket which are in communication connection with the main control circuit board are arranged on the panel of the recorder shell; the main control circuit board is connected with an embedded single chip microcomputer, an input signal conditioning circuit module, a U disk memory, a power supply module, a real-time clock circuit module and a working alarm mode conversion circuit module; the embedded single chip microcomputer acquires logic control signal data of the motor train unit through the input signal conditioning circuit module, and identifies date and real-time of the acquired logic control signal data through the real-time clock circuit module which is in communication connection with the embedded single chip microcomputer.
2. The motor train unit safety loop fault diagnosis recorder of claim 1, characterized in that: the input signal conditioning circuit module is in communication connection with a general distribution electrical control cabinet arranged in a safety loop of the motor train unit and a running distribution electrical control cabinet arranged in each carriage, and can collect logic control signal data of the general distribution electrical control cabinet and the running distribution electrical control cabinet; the main distribution electric control cabinet monitors working states of a surge pulse interference circuit, a main air pipe pressure switch and a relay arranged on an emergency brake loop of the motor train unit in real time through a communication signal wire, and transmits the monitored relay states to an input signal conditioning circuit module in a mode of logic control signal data; the operation and distribution electric control cabinet monitors the storage battery fault monitoring circuit, the train set marshalling state signal and the working state of the antiskid relay in each carriage in real time through a communication signal line, and transmits the monitored state signal to the input signal conditioning circuit module in a mode of logic control signal data; a motor train unit safety loop fault diagnosis recorder for monitoring the working state of a general distribution electrical control cabinet or a distribution electrical control cabinet can be arranged in a head train of the motor train unit, and a motor train unit safety loop fault diagnosis recorder for monitoring the working state of each distribution electrical control cabinet can be arranged in each carriage.
3. The motor train unit safety loop fault diagnosis recorder of claim 1, characterized in that: the U disk memory is connected with the embedded single chip microcomputer through the U disk memory system circuit in a high-speed data transmission mode, and the embedded single chip microcomputer stores logic control signal data which are collected and identify date and real-time into the U disk memory in a 256-byte one-frame mode.
4. The motor train unit safety loop fault diagnosis recorder according to any one of claims 1 to 3, characterized in that: the embedded single chip microcomputer can upload logic control signal data stored in the U disk memory to the mobile computer through the USB2.0 data transmission interface.
5. The motor train unit safety loop fault diagnosis recorder according to any one of claims 1 to 2, characterized in that: the logic control signal data acquired by the embedded single chip microcomputer can be displayed in real time on a monitoring site through a data display module; the data display module adopts an LED nixie tube for displaying, alternately and circularly displays date, time and internal information when the logic control signal data acquired by the embedded single chip microcomputer is normal, and displays corresponding codes and gives out audible and visual alarm when the logic control signal data acquired by the embedded single chip microcomputer is abnormal; and an alarm sound cutting key is arranged on the recorder shell and used for stopping the alarm sound of the recorder.
6. The motor train unit safety loop fault diagnosis recorder of claim 1, characterized in that: the power supply module adopts a DC/DC conversion power supply module.
7. The motor train unit safety loop fault diagnosis recorder of claim 1, characterized in that: the input signal conditioning circuit module adopts a photoelectric isolation input signal conditioning circuit structure to inhibit strong electromagnetic interference.
8. The motor train unit safety loop fault diagnosis recorder of claim 3, characterized in that: the embedded singlechip adopts an 89C55 embedded singlechip of Atmel company; the embedded single chip microcomputer is in communication connection with a U disk storage system circuit, and the U disk storage system circuit adopts a USB bus interface chip CH 375; the real-time clock circuit module adopts a real-time clock chip DS12C 887A.
9. The motor train unit safety loop fault diagnosis recorder of claim 1, characterized in that: the embedded single chip microcomputer is in communication connection with the transmission cable automatic detection module, the transmission cable automatic detection module is used for reading the interface state of the USB2.0 data transmission interface, when the transmission cable is connected to the USB2.0 data transmission interface, the embedded single chip microcomputer firstly stores the data in the current data buffer, and then transmits the data to the mobile computer through the transmission cable connected to the USB2.0 data transmission interface; the vehicle-mounted equipment communication interface of the embedded single chip microcomputer can be in data communication connection with the vehicle-mounted equipment of the motor train unit through the RS485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921708365.4U CN210377578U (en) | 2019-10-13 | 2019-10-13 | Fault diagnosis recorder for safety loop of motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921708365.4U CN210377578U (en) | 2019-10-13 | 2019-10-13 | Fault diagnosis recorder for safety loop of motor train unit |
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| Publication Number | Publication Date |
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| CN210377578U true CN210377578U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921708365.4U Expired - Fee Related CN210377578U (en) | 2019-10-13 | 2019-10-13 | Fault diagnosis recorder for safety loop of motor train unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083239A (en) * | 2020-08-19 | 2020-12-15 | 中车长春轨道客车股份有限公司 | Renaming motor train unit safety loop debugging method based on end connectors |
-
2019
- 2019-10-13 CN CN201921708365.4U patent/CN210377578U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112083239A (en) * | 2020-08-19 | 2020-12-15 | 中车长春轨道客车股份有限公司 | Renaming motor train unit safety loop debugging method based on end connectors |
| CN112083239B (en) * | 2020-08-19 | 2024-04-30 | 中车长春轨道客车股份有限公司 | Method for debugging safety loop of motor train unit with recovery number based on vehicle end connector |
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