CN220315005U - High-precision positioning plug-in for train - Google Patents
High-precision positioning plug-in for train Download PDFInfo
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- CN220315005U CN220315005U CN202322077517.8U CN202322077517U CN220315005U CN 220315005 U CN220315005 U CN 220315005U CN 202322077517 U CN202322077517 U CN 202322077517U CN 220315005 U CN220315005 U CN 220315005U
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- 238000004891 communication Methods 0.000 claims description 6
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- 238000012545 processing Methods 0.000 description 3
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- 230000003137 locomotive effect Effects 0.000 description 2
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Abstract
The utility model relates to a high-precision train positioning plug-in unit, which comprises a GNSS antenna, a power module, an MCU unit, an external interface unit, a GNSS positioning unit, a PHY unit and a bottom plate unit, wherein the power module is respectively connected with the MCU unit, the external interface unit, the GNSS positioning unit and the PHY unit, the MCU unit is connected with the GNSS positioning unit and the external interface unit through a UART serial port, the GNSS positioning unit comprises a BNC interface, and the GNSS positioning unit is connected with the GNSS antenna through the BNC interface; the SPI interface of the MCU unit is connected with a six-axis sensor. The utility model sets the GNSS positioning unit and the external interface unit to collect data, and sets the six-axis sensor to detect shaking data in the running process of the vehicle, and transmits the positioning data, the monitoring data of the external sensor and the shaking data to the main control system through the MCU unit and the bottom plate unit.
Description
Technical Field
The utility model relates to a dynamic monitoring system for a motor train unit train, in particular to a high-precision positioning plug-in unit for a train.
Background
The train control dynamic monitoring system comprises a locomotive shunting operation safety auxiliary protection system (Locomotive Shunting assist Protection, LSP) and a railcar shunting operation safety auxiliary protection system (GDK), which are based on a train control equipment dynamic monitoring and transmission system (Dynamic Monitoring System for Train Control Equipment, DMS) platform.
With the development of global navigation satellite system (Global Navigation Satellite System, GNSS) technology, the motor train unit is introduced into the global navigation satellite system, and finally, positioning data, external sensor monitoring data and shaking data are transmitted to a system platform, so that the functional expansion of the current system is restricted due to the earlier design and shaping of the platform.
There is therefore a need for a plug-in unit that can be connected to an external sensor as well as to a GNSS antenna for data interaction.
Disclosure of Invention
The utility model provides a high-precision positioning plug-in for a train, which solves the problems that the existing motor train unit cannot be connected with a GNSS antenna and cannot collect shaking data, sets a GNSS positioning unit and an external interface unit to collect data, sets a six-axis sensor to detect shaking data in the running process of the train, and transmits the positioning data, the monitoring data of the external sensor and the shaking data to a main control system through an MCU unit and a bottom plate unit.
In order to achieve the above object, the present utility model provides a high-precision positioning plug-in for a train, which comprises a GNSS antenna, a power module, an MCU unit, an external interface unit, a GNSS positioning unit, a PHY unit, and a base plate unit, wherein the power module is connected to a DC12V power supply through the base plate unit, the power module is respectively connected to the MCU unit, the external interface unit, the GNSS positioning unit, and the PHY unit, the MCU unit is connected to the GNSS positioning unit and the external interface unit through UART serial ports,
the GNSS positioning unit comprises a BNC interface, and is connected with the GNSS antenna through the BNC interface;
the external interface unit includes a DB9 interface;
and an SPI interface of the MCU unit is connected with a six-axis sensor.
The operation principle is as follows: the GNSS positioning unit is connected with the GNSS antenna through the BNC interface, and the GNSS antenna transmits the received satellite positioning signals to the GNSS positioning unit in the plugboard and then the GNSS positioning unit transmits the satellite positioning signals to the MCU unit;
simultaneously, the external sensor is connected with the DB9 interface, and the external sensor transmits detection data to the MCU unit;
the six-axis sensor collects shaking data of the vehicle in the running process and transmits the shaking data to the MCU;
the MCU unit is connected with the main control system through the bottom plate unit. And the function expansion of the master control system is realized.
Further, the power supply module comprises a protection circuit, a current and voltage monitoring circuit, a power supply conversion module, a 12V isolation power supply module, a 5V isolation power supply module, a fuse and a V-F conversion circuit;
the protection circuit comprises a short-circuit protection circuit, an overvoltage protection circuit and an LC filter circuit, one side of the protection circuit is connected with a DC12V power supply, the other end of the protection circuit is connected with a current and voltage monitoring circuit, and the output of the current and voltage monitoring circuit is respectively connected with a power supply conversion module, a 12V isolation power supply module and a 5V isolation power supply module;
the power supply conversion module comprises a 12/5V power supply chip, a 12/3.3V power supply chip and a 5/3.3V power supply chip;
the 12V isolation power supply module is connected with the power supply end of the external interface unit through a fuse, and the 12/5V power supply chip is connected with the power supply end of the external interface unit to form a first power supply circuit;
the 5V isolation power supply module is connected with the power supply end of the GNSS positioning unit, and the 5/3.3V power supply chip is connected with the power supply end of the GNSS positioning unit to form a second power supply circuit;
the 12/3.3V power chip is connected with the six-axis sensor, the bottom plate unit, the MCU unit and the PHY unit to form a third power supply circuit.
The first power supply circuit, the second power supply circuit and the third power supply circuit are arranged to meet different power requirements of the MCU unit, the PHY unit, the external interface unit and the GNSS positioning unit.
Further, the V-F conversion circuit includes two GP9101 chips, wherein one GP9101 chip is connected in series between the first power supply circuit and the external interface unit, and the other end is connected to the IO pin of the MCU unit;
the other GP9101 chip is connected in series between the second power supply circuit and the GNSS positioning unit, and the other end of the GP9101 chip is connected with an IO pin of the MCU unit;
the output end of the 12/3.3V power chip is connected with the AD pin of the MCU through the acquisition resistor.
The voltage value is converted into a PWM signal through the conversion of the GP9101 chip, the voltage is collected by measuring the duty ratio of the GPIO pin connected with the MCU through the optocoupler isolation, and meanwhile, the on-off of the first power supply circuit and the second power supply circuit can be controlled through the MCU.
The AD pin of the MCU unit collects the voltage of the third power supply circuit. And the output of the current and voltage monitoring circuit is connected with an AD pin of the MCU unit through processing.
And voltage monitoring and on-off control of the GNSS positioning unit and the external interface unit are realized.
Further, the MCU unit is connected with a memory through an I2C interface, the MCU unit is also connected with a temperature sensor through the I2C interface, and the MCU unit is connected with the PHY unit through an MII interface.
The embedded hardware circuit is adopted, and the circuit structure is simple.
Further, the GNSS positioning unit also comprises a positioning module and an isolation chip, wherein one end of the positioning module is connected with the input end of the BNC interface, and the other end of the positioning module is connected with the MCU unit through the isolation chip;
the positioning module comprises a NEO-M8 module and a ZED-F9P module.
The GNSS positioning unit mainly completes the receiving of GNSS antenna data, is connected with an external GNSS antenna through a BNC connector on the front panel, receives GNSS time and longitude and latitude data, and is transferred to the positioning module through an internal connecting line and an MCX-KHD1 socket.
Further, the external interface unit further comprises an RS485 serial port module and an isolation chip, wherein the RS485 serial port module is connected with the input end of the DB9 interface, and the output end of the RS485 serial port module is connected with the MCU unit through the isolation chip.
Further, the PHY unit includes a DP83848I portal chip.
Further, the bottom board unit comprises a back board connector, wherein the back board connector comprises a DC12V interface, an RS485 bus interface, a CAN bus interface, a network bus interface and a slot detection module;
the DC12V interface is electrically connected with the power module, the RS485 bus interface is in communication connection with the CAN bus interface and the MCU unit, the network bus interface is in communication connection with the PHY unit, and the slot detection module is electrically connected with the IO pin of the MCU unit.
Through the technical scheme, the utility model has the beneficial effects that:
the utility model realizes the connection of the GNSS antenna, the connection of the external sensor and the acquisition of the shaking data, and realizes the acquisition of high-precision positioning data, shaking data and external data of the train. The six-axis sensor collects shaking data of the vehicle in the running process. And then the MCU unit is used for data processing, and finally the positioning data, the monitoring data of the external sensor and the vehicle shaking data are transmitted to the main control system through the bottom plate unit.
Drawings
FIG. 1 is one of the electrical schematic diagrams of a high-precision positioning plug-in for a train of the present utility model;
FIG. 2 is a second electrical schematic diagram of a high precision positioning plug-in for a train in accordance with the present utility model;
FIG. 3 is a third electrical schematic diagram of a high-precision positioning plug-in for a train in accordance with the present utility model;
FIG. 4 is a fourth electrical schematic diagram of a high precision positioning plug-in for a train in accordance with the present utility model;
FIG. 5 is a fifth electrical schematic diagram of a high precision positioning plug-in for a train in accordance with the present utility model;
FIG. 6 is a schematic diagram of an electrical apparatus for a high precision positioning insert for a train in accordance with the present utility model;
FIG. 7 is a schematic diagram of an electrical apparatus for a high precision positioning insert for a train in accordance with the present utility model.
Reference numerals: 2 is a power module, 3 is an MCU unit, 4 is an external interface unit, 5 is a GNSS positioning unit, 6 is a PHY unit, 7 is a base plate unit, 8 is a six-axis sensor, 9 is a 12V isolation power module, 10 is a 5V isolation power module, 11 is a power conversion module, 12 is a positioning module, 13 is an isolation chip, and 14 is a V-F conversion circuit.
Detailed Description
The utility model is further described with reference to the drawings and detailed description which follow:
example 1
As shown in fig. 1-7, a high-precision positioning plug-in for a train comprises a GNSS antenna, a power module 2, an MCU unit 3, an external interface unit 4, a GNSS positioning unit 5, a PHY unit 6 and a base plate unit 7, wherein the power module 2 is connected with a DC12V power supply through the base plate unit 7, the power module 2 is respectively connected with the MCU unit 3, the external interface unit 4, the GNSS positioning unit 5 and the PHY unit 6, the MCU unit 3 is connected with the GNSS positioning unit 5 and the external interface unit 4 through UART serial ports,
the GNSS positioning unit 5 comprises a BNC interface, and the GNSS positioning unit 5 is connected with the GNSS antenna through the BNC interface;
the external interface unit 4 includes a DB9 interface;
the SPI interface of the MCU unit 3 is connected with a six-axis sensor (ASM 330 LHH) 8.
As shown in fig. 2, the power module 2 preferably comprises a protection circuit, a current-voltage monitoring circuit, a power conversion module 11, a 12V isolated power module 9 and a 5V isolated power module 10, a fuse and a V-F conversion circuit 14;
the protection circuit comprises a short-circuit protection circuit (SMD 1812B075TF/33 (Junzhong) self-recovery insurance), an overvoltage protection circuit (SMBJ 14 CA) and an LC filter circuit, wherein one side of the protection circuit is connected with a DC12V power supply, the other side of the protection circuit is connected with a current and voltage monitoring circuit (INA 138 chip), and the outputs of the current and voltage monitoring circuits are respectively connected with a power supply conversion module 11, a 12V isolated power supply module 9 (VRB 1212S-10WR 3) and a 5V isolated power supply module 10 (VRB 1205S-6 WR 3);
the power conversion module 11 comprises a 12/5V power chip (TPS 54202), a 12/3.3V power chip (SY 8120I) and a 5/3.3V power chip (SPX 1117);
the 12V isolation power supply module 9 is connected with the power supply end of the external interface unit 4 through a fuse, and the 12/5V power supply chip is connected with the power supply end of the external interface unit 4 to form a first power supply circuit;
the 5V isolation power module 10 is connected with the power end of the GNSS positioning unit 5, and the 5/3.3V power chip is connected with the power end of the GNSS positioning unit 5 to form a second power supply circuit;
the 12/3.3V power chip is connected with the six-axis sensor 8, the bottom plate unit 7, the MCU unit 3 and the PHY unit 6 to form a third power supply circuit.
Preferably, the V-F conversion circuit 14 includes two GP9101 chips, wherein one GP9101 chip is connected in series between the first power supply circuit and the external interface unit 4, and the other end is connected to the IO pin of the MCU unit 3;
the other GP9101 chip is connected in series between the second power supply circuit and the GNSS positioning unit 5, and the other end of the GP9101 chip is connected with an IO pin of the MCU unit 3;
the output end of the 12/3.3V power chip is connected with the AD pin of the MCU unit 3 through the acquisition resistor.
As shown in fig. 3, preferably, the MCU unit 3 (STM 32F 407) is connected to the memory (MC 24C 02) through the I2C interface, the MCU unit 3 is also connected to the temperature sensor (TMP 75) through the I2C interface, and the MCU unit 3 is connected to the PHY unit 6 through the MII interface.
As shown in fig. 4, the GNSS positioning unit 5 further includes a positioning module 12 and an isolation chip 13 (pi 121U 31), where one end of the positioning module 12 is connected to the input end of the BNC interface, and the other end is connected to the MCU unit 3 through the isolation chip 13;
the positioning module 12 includes a NEO-M8 module and a ZED-F9P module.
In actual operation, the NEO-M8 module and the ZED-F9P module are used alternatively.
As shown in fig. 5, the external interface unit 4 further includes an RS485 serial port (MAX 485 EE) module and an isolation chip 13, where the RS485 serial port module is connected to the input end of the DB9 interface, and the output end of the RS485 serial port module is connected to the MCU unit 3 through the isolation chip 13.
As shown in fig. 6, preferably, the PHY unit 6 includes a DP83848I portal chip.
As shown in fig. 7, preferably, the backplane unit 7 includes a backplane connector, and the backplane connector includes a DC12V interface, an RS485 bus interface, a CAN bus interface, a network bus interface, and a slot detection module;
the DC12V interface is electrically connected with the power module 2, the RS485 bus interface is in communication connection with the CAN bus interface and the MCU unit 3, the network bus interface is in communication connection with the PHY unit 6, and the slot detection module is electrically connected with the IO pin of the MCU unit 3.
The backplane connector is embodied as a tak high speed backplane connector 6469028.
The utility model is mainly used for realizing the collection of high-precision positioning data, work shaking data and external data of the train. The roof GNSS antenna transmits the received satellite positioning signals to the GNSS positioning module 5, the six-axis sensor 8 collects shaking data of the vehicle in the running process, the track smoothness state of the running line of the vehicle is monitored in real time, the MCU unit 3 is used for data processing, and finally the positioning data, the monitoring data of the external sensor and the shaking data are transmitted to the external master control system through an RS485 bus, a CAN bus or a network bus of the bottom plate unit 7. Meanwhile, the system also has the functions of collecting voltage, current and temperature and storing the factory information of the board card.
The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present utility model.
Claims (8)
1. The high-precision positioning plug-in unit for the train comprises a GNSS antenna and is characterized by further comprising a power module (2), an MCU unit (3), an external interface unit (4), a GNSS positioning unit (5), a PHY unit (6) and a bottom plate unit (7), wherein the power module (2) is connected with a DC12V power supply through the bottom plate unit (7), the power module (2) is respectively connected with the MCU unit (3), the external interface unit (4), the GNSS positioning unit (5) and the PHY unit (6), the MCU unit (3) is connected with the GNSS positioning unit (5) and the external interface unit (4) through UART serial ports,
the GNSS positioning unit (5) comprises a BNC interface, and the GNSS positioning unit (5) is connected with the GNSS antenna through the BNC interface;
the external interface unit (4) comprises a DB9 interface;
and an SPI interface of the MCU unit (3) is connected with a six-axis sensor (8).
2. The high-precision positioning plug-in for trains according to claim 1, characterized in that the power module (2) comprises a protection circuit, a current-voltage monitoring circuit, a power conversion module (11), a 12V isolated power module (9) and a 5V isolated power module (10), a fuse and a V-F conversion circuit (14);
the protection circuit comprises a short-circuit protection circuit, an overvoltage protection circuit and an LC filter circuit, one side of the protection circuit is connected with a DC12V power supply, the other end of the protection circuit is connected with a current-voltage monitoring circuit, and the output of the current-voltage monitoring circuit is respectively connected with a power supply conversion module (11), a 12V isolation power supply module (9) and a 5V isolation power supply module (10);
the power supply conversion module (11) comprises a 12/5V power supply chip, a 12/3.3V power supply chip and a 5/3.3V power supply chip;
the 12V isolation power supply module (9) is connected with the power supply end of the external interface unit (4) through a fuse, and the 12/5V power supply chip is connected with the power supply end of the external interface unit (4) to form a first power supply circuit;
the 5V isolation power supply module (10) is connected with the power supply end of the GNSS positioning unit (5), and the 5/3.3V power supply chip is connected with the power supply end of the GNSS positioning unit (5) to form a second power supply circuit;
the 12/3.3V power chip is connected with the six-axis sensor (8), the bottom plate unit (7), the MCU unit (3) and the PHY unit (6) to form a third power supply circuit.
3. The high-precision train positioning plug-in according to claim 2, wherein the V-F conversion circuit (14) comprises two GP9101 chips, one GP9101 chip is connected in series between the first power supply circuit and the external interface unit (4), and the other end is connected with an IO pin of the MCU unit (3);
the other GP9101 chip is connected in series between the second power supply circuit and the GNSS positioning unit (5), and the other end of the GP9101 chip is connected with an IO pin of the MCU unit (3);
the output end of the 12/3.3V power chip is connected with the AD pin of the MCU unit (3) through the acquisition resistor.
4. The high-precision train positioning plug-in according to claim 1, wherein the MCU unit (3) is connected with a memory through an I2C interface, the MCU unit (3) is also connected with a temperature sensor through an I2C interface, and the MCU unit (3) is connected with the PHY unit (6) through an MII interface.
5. The high-precision train positioning plug-in according to claim 1, wherein the GNSS positioning unit (5) further comprises a positioning module (12) and an isolation chip (13), one end of the positioning module (12) is connected with the input end of the BNC interface, and the other end is connected with the MCU unit (3) through the isolation chip (13);
the positioning module (12) comprises a NEO-M8 module and a ZED-F9P module.
6. The high-precision train positioning plug-in according to claim 1, wherein the external interface unit (4) further comprises an RS485 serial port module and an isolation chip (13), the RS485 serial port module is connected with the input end of the DB9 interface, and the output end of the RS485 serial port module is connected with the MCU unit (3) through the isolation chip (13).
7. A train high precision positioning insert according to claim 1, characterized in that the PHY unit (6) comprises a DP83848I portal chip.
8. A train high precision positioning insert according to claim 1, characterized in that the backplane unit (7) comprises a backplane connector comprising a DC12V interface, an RS485 bus interface, a CAN bus interface, a network bus interface and a slot detection module;
the DC12V interface is electrically connected with the power module (2), the RS485 bus interface is in communication connection with the CAN bus interface and the MCU unit (3), the network bus interface is in communication connection with the PHY unit (6), and the slot detection module is electrically connected with the IO pin of the MCU unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322077517.8U CN220315005U (en) | 2023-08-03 | 2023-08-03 | High-precision positioning plug-in for train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322077517.8U CN220315005U (en) | 2023-08-03 | 2023-08-03 | High-precision positioning plug-in for train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220315005U true CN220315005U (en) | 2024-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322077517.8U Active CN220315005U (en) | 2023-08-03 | 2023-08-03 | High-precision positioning plug-in for train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220315005U (en) |
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2023
- 2023-08-03 CN CN202322077517.8U patent/CN220315005U/en active Active
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