STP vehicle-mounted host for vehicle-ground redundant communication

Abstract

The utility model provides an STP vehicle-mounted host used for vehicle-ground redundant communication. The STP vehicle-mounted host comprises a vehicle-mounted host MCU unit, a data transmission radio module, a data transmission antenna, a redundant public network 4G communication module and a 4G antenna. The vehicle-mounted host MCU comprises a dual-redundancy communication interface module, the dual-redundancy communication interface module comprises a serial port communication channel I and a serial port communication channel II, and the vehicle-mounted host MCU is connected with the data radio module through the serial port communication channel I and connected with the redundancy public network 4G communication module through the serial port communication channel II; the data transmission radio module is in communication connection with the data transmission antenna, and the redundant public network 4G communication module is in communication connection with the 4G antenna.

Description

TECHNICAL FIELD

[0001] The utility model relates to STP system technical field, specifically speaking, relate to a kind of for the STP vehicle-host for vehicle-ground redundant communication. BACKGROUND

[0002] STP system is the auxiliary equipment of shunting safety protection, and the information of relevant signal, turnout, track circuit section information of centralized interlocking station shunting operation obtained by its ground and vehicle-mounted equipment is handled, and wireless communication mode is used in vehicle-ground, and through train operation monitoring device (LKJ), shunting locomotive signal display and train set speed monitoring are realized. STP vehicle-host is the vehicle-mounted main equipment of STP system, and wireless communication is carried out with STP ground equipment, and after the operation of the information received, front route type, route speed limit and other control related information are sent to LKJ, and LKJ calculates control mode curve according to these information and plays a protective role, and figure (a) and figure (b) are the front and back structure schematic diagram of existing STP vehicle-host.

[0003] At present, the communication of STP vehicle-host and STP ground equipment is mainly through data radio station, and signal coverage blind area cannot be avoided in data radio station communication, such as high buildings or metal shielding, communication distance is too far, etc., when shunting machine runs to signal coverage blind area, communication with ground system is interrupted, thereby affecting the safety protection of shunting machine.

[0004] The invention patent application with publication date of November 2, 2018 and publication number CN108737466A provides a kind of method for realizing STP system vehicle-ground redundant communication based on GSM-R network and data radio station, and vehicle-ground communication is realized using the existing GSM-R network of station, and the problem that data radio station cannot completely cover some areas of station yard is solved.

[0005] However, with the rapid development of high-speed railway, and the wide application of front-line technologies such as Internet of Things, big data and cloud computing, the limitations of GSM-R network gradually appear, and it has deficiencies in data transmission rate, network coverage range and device compatibility, etc., and cannot meet the needs of modern railway communication.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. SUMMARY

[0007] The utility model aims at the deficiency of prior art, and provides a kind of STP vehicle-host for vehicle-ground redundant communication, which carries out redundant communication with ground equipment through redundant communication unit, when data radio station communication is interrupted, vehicle-host CPU automatically switches to redundant communication unit, ensures the communication state of vehicle-host and ground system, and guarantees the safety protection of shunting machine.

[0008] To achieve the above object, the utility model adopts the technical scheme of:

[0009] Provide a kind of STP vehicle host for vehicle-ground redundancy communication, including vehicle host MCU unit, data radio module, data radio antenna, redundancy public network 4G communication module and 4G antenna;

[0010] The vehicle host MCU unit includes double redundancy communication interface module, the double redundancy communication interface module includes serial communication channel I and serial communication channel II, the vehicle host MCU unit is connected the data radio module by serial communication channel I, is connected the redundancy public network 4G communication module by serial communication channel II;

[0011] The data radio module is connected with the data radio antenna, and the redundancy public network 4G communication module is connected with the 4G antenna.

[0012] In an embodiment, the serial communication channel I includes first serial port and second serial port, wherein the first serial port is connected to the data interface of the data radio module, and the second serial port is connected to the configuration interface of the data radio module.

[0013] The serial communication channel II includes third serial port, and the third serial port is connected to the redundancy public network 4G communication module.

[0014] In an embodiment, the STP vehicle host further includes a redundancy GSM-R communication module, a communication switching module, and a GSM-R antenna. The communication switching module is connected to the vehicle host MCU unit, the redundancy public network 4G communication module, and the redundancy GSM-R communication module, respectively. The switching interface channel enables any communication module to work in communication.

[0015] In an embodiment, the redundancy public network 4G communication module includes a microprocessor, a full-network 4G module, a SIM card switching circuit, a mobile SIM card seat, a China Unicom SIM card seat, and a telecom SIM card seat.

[0016] The SIM card switching circuit is connected to the microprocessor, and the full-network 4G module is connected to the microprocessor and the SIM card switching circuit, respectively. The mobile SIM card seat, the China Unicom SIM card seat, and the telecom SIM card seat are connected to the SIM card switching circuit, respectively.

[0017] The 4G antenna is connected to the full-network 4G module.

[0018] The utility model discloses relative prior art has prominent substantial characteristics and obvious progress, specifically speaking, the utility model realizes the redundant communication of data transmission radio station and public network 4G, solves the wireless signal coverage blind area problem under the condition of using data transmission radio station communication of traditional STP vehicle host computer, compares the mode of using wireless communication relay of traditional solution data transmission radio station wireless communication blind area, does not need to install extra communication equipment, reduces the failure node, and the stability of system is better. Compared with the scheme that realizes STP system vehicle ground redundant communication based on GSM-R network and data transmission radio station, the utility model can satisfy the demand of modern railway communication in data transmission rate, network coverage range.

[0019] The utility model further adds redundant GSM-R communication module, communication switching module, to switch GSM-R communication or public network 4G for the STP vehicle host computer according to demand, satisfies the transition of modern railway communication from GSM-R to 4G network.

[0020] The utility model only utilizes the case reserved space and interface of existing vehicle host computer and can realize, need not change the appearance of existing vehicle host computer hardware structure, and the integration degree is high, and installation and maintenance are more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 (a) is the front structure schematic drawing of existing STP vehicle host computer.

[0022] Fig. 1 (b) is the back structure schematic drawing of existing STP vehicle host computer.

[0023] Figure 2 It is the principle schematic drawing of the utility model embodiment 1.

[0024] Figure 3 It is the switching principle schematic drawing of the utility model embodiment 1.

[0025] Fig. 4 (a) is the front structure schematic drawing of STP vehicle host computer in the utility model embodiment 1.

[0026] Fig. 4 (b) is the back structure schematic drawing of STP vehicle host computer in the utility model embodiment 1.

[0027] Figure 5 It is the principle schematic drawing of the utility model embodiment 2.

[0028] Fig. 6 (a) is the front structure schematic drawing of STP vehicle host computer in the utility model embodiment 2.

[0029] Fig. 6 (b) is the back structure schematic drawing of STP vehicle host computer in the utility model embodiment 2.

[0030] In the diagram: 1. Main unit casing; 2. Data transmission antenna interface; 3. Query host interface; 4. Printer interface; 5. Power interface; 6. Fuse interface; 7. Power switch; 8. CAN communication interface; 9. 4G antenna interface; 10. GSM-R antenna interface. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0032] Example 1

[0033] This embodiment provides an STP on-board host for vehicle-to-ground redundant communication, such as... Figure 2 As shown, it includes an onboard MCU unit, a data transmission radio module, a data transmission antenna, a redundant public network 4G communication module, and a 4G antenna;

[0034] The vehicle-mounted MCU unit includes a dual-redundant communication interface module, which includes serial communication channel I and serial communication channel II. The vehicle-mounted MCU unit is connected to the data transmission radio module through serial communication channel I and to the redundant public network 4G communication module through serial communication channel II.

[0035] The data transmission radio module is communicatively connected to the data transmission antenna, and the redundant public network 4G communication module is communicatively connected to the 4G antenna.

[0036] Specifically, such as Figure 2 As shown, the serial communication channel I includes a first serial port and a second serial port, wherein the first serial port is connected to the data interface of the data transmission radio module, and the second serial port is connected to the configuration interface of the data transmission radio module.

[0037] The serial communication channel II includes a third serial port, which is connected to the redundant public network 4G communication module.

[0038] Preferably, both the configuration interface and the communication interface are RS232 serial ports, specifically including a three-core wire: one for receiving, one for transmitting, and one for ground.

[0039] The vehicle-mounted main unit (MCU) includes a configuration command interface and a communication data interface. The configuration command interface is connected to the configuration interfaces of data transmission radio module I and data transmission radio module II through the radio switching device. The communication data interface is connected to the data interfaces of data transmission radio module I and data transmission radio module II through the radio switching device.

[0040] It can be understood that the configuration instruction interface and the communication data interface are both RS232 serial ports, specifically including three core wires, one of which represents a receiving line, one represents a sending line, and one represents a ground wire.

[0041] As shown in Figure 3 The working principle of the STP vehicle host is as follows:

[0042] In the initial state, the vehicle host MCU unit communicates with ground equipment through the data radio module and the data antenna by default.

[0043] When the data radio communication is normal, the vehicle host MCU unit does not perform any operation;

[0044] When the data radio communication is abnormal, for example, when the data radio module receives data timeout, the vehicle host MCU unit automatically switches to communicate with ground equipment through the redundant public network 4G communication module and the 4G antenna;

[0045] When the data radio communication is restored, the vehicle host MCU unit automatically switches to communicate with ground equipment through the data radio module and the data antenna.

[0046] Further, the vehicle host MCU unit further includes a CAN communication module, and the vehicle host MCU unit is connected with the CAN communication module.

[0047] Further, it further includes a power supply unit, which supplies power to the vehicle host MCU unit, the data radio module, the data antenna, the redundant public network 4G communication module, and the 4G antenna.

[0048] In specific implementation, the STP vehicle host for vehicle-ground redundant communication is as shown in FIGS. 4(a)-4(b), and the STP dual-frequency vehicle host further includes a host shell 1, and the front of the host shell 1 is provided with the power supply unit, the CAN communication unit, the data radio module, and the redundant public network 4G communication module;

[0049] The back of the host shell is provided with a data antenna interface 2, a 4G antenna interface 9, an inquiry host interface 3, a printer interface 4, a power supply interface 5, an insurance interface 6, a CAN communication interface 8, and a power switch 7, the data antenna interface 2 is connected with the data radio module, the 4G antenna interface 9 is connected with the redundant public network 4G communication module; the CAN communication interface 8 is connected with the CAN communication module; the power switch 7 and the power supply interface 5 are connected with the power supply unit respectively.

[0050] Specifically, the power switch 7 is arranged on the main line of the power supply unit, and is used for controlling the power supply of the vehicle-mounted host MCU unit, the data transmission radio module, the data transmission antenna, the redundant public network 4G communication module and the 4G antenna. The power supply interface 5 is used for charging the power supply unit. Specifically, the power supply unit converts the external DC 110V or DC 74V power supply into DC 13.6V power supply for the data transmission radio module, and converts the power supply into power supply for the vehicle-mounted host MCU unit, the redundant public network 4G communication module and the 4G antenna. The power supply unit adopts a wide-range power supply unit, and the power supply range is from DC 66V to DC 133V, which can effectively meet the power supply requirements of different shunting locomotives, thereby improving the universality of the equipment.

[0051] Embodiment 2

[0052] The difference between this embodiment and embodiment 1 is that, as shown in FIGS. 6(a) and 6(b), the STP vehicle-mounted host further comprises a redundant GSM-R communication module, a communication switching module and a GSM-R antenna, the communication switching module is connected with the vehicle-mounted host MCU unit, the redundant public network 4G communication module and the redundant GSM-R communication module respectively, and the switching interface channel enables any communication module to work in communication. Figure 5

[0053] Specifically, the front of the host shell 1 is newly added with the redundant GSM-R communication module on the basis of embodiment 1, and the back of the host shell 1 is newly added with a GSM-R antenna interface 10 on the basis of embodiment 1, the GSM-R antenna interface 10 is in communication connection with the redundant GSM-R communication module, and the GSM-R antenna interface 10 is used for plugging the GSM-R antenna.

[0054] Specifically, the vehicle-mounted host MCU unit is connected with the communication switching module, the communication switching module can be an analog switch circuit, the output end of the analog switch circuit is connected with the redundant public network 4G communication module and the redundant GSM-R communication module respectively, and the input end of the analog switch circuit is connected with the vehicle-mounted host MCU unit. Preferably, the analog switch circuit is a communication switching circuit composed of a multiplexer CD4052BM chip or CH4442H, which is a conventional circuit and will not be described in detail here. It can be understood that the analog switch circuit can also be other common circuits on the market which can realize communication switching.

[0055] The working principle is as follows:

[0056] For the ground equipment using the existing GSM-R network, the STP vehicle-mounted host enables the redundant GSM-R communication module to work through the communication switching module switching interface channel, so as to realize communication with the ground equipment.​

[0057] For the newly built ground equipment using 4G new technology, the STP vehicle host switches the interface channel through the communication switching module to make the redundant public network 4G communication module work, and realizes the communication with the ground equipment.

[0058] Further, the redundant public network 4G communication module includes a microprocessor, a full-network 4G module, a SIM card switching circuit, a mobile SIM card seat, a mobile communication SIM card seat and a mobile telecom SIM card seat.

[0059] The SIM card switching circuit is connected with the microprocessor, and the full-network 4G module is connected with the microprocessor and the SIM card switching circuit respectively; the mobile SIM card seat, the mobile communication SIM card seat and the mobile telecom SIM card seat are connected with the SIM card switching circuit respectively.

[0060] The 4G antenna is connected with the full-network 4G module.

[0061] Specifically, the SIM card switching circuit can specifically refer to the SIM card switching circuit in the prior art, for example, the SIM card automatic switching circuit disclosed in CN214154508U, which contains a network selection switch and a state indicating lamp, a double-channel double-pole double-throw analog switch FSA2567, a UART level conversion circuit and a USB socket; FSA2567 is a bidirectional, low-power, double-channel double-pole double-throw 4PDT analog switch, which is used for double-channel 1-bit SIM card multiplexing, and provides 3-channel SIM card multiplexing when 2 pieces are combined.

[0062] The full-network 4G module is connected with the double-channel double-pole double-throw analog switch, and preferably, the full-network 4G module selects a SIM7600CE wireless communication module, an EC20 LTE Cat 4 wireless communication module and the like.

[0063] The double-channel double-pole double-throw analog switch is further connected with the microprocessor, the mobile SIM card seat, the mobile communication SIM card seat and the mobile telecom SIM card seat respectively, the microprocessor communicates with the full-network 4G module through a UART port and a UART level conversion circuit, and the network selection switch is a 3-bit dialing switch, the switch state is output to the GPIO pin of the microprocessor, and is used for detecting the enabled state of the SIM card. Preferably, the microprocessor adopts an STMicroelectronics STM32 microcontroller STM32F105RCT6.

[0064] Two FSA2567 low-power SIM card switching switches are used to install three SIM cards into the redundant public network 4G communication module, the microprocessor switches the SIM cards of different operators according to the sequence to find the best operator base station in signal quality, when the signal quality is weak or the communication fails after a period of time, the microprocessor switches to the next operator again, the microprocessor controls the switching switch to switch back and forth between the three different operators all the time, to find the best channel in communication quality to communicate, so as to solve the problem of terminal communication failure caused by network signal change, and the communication reliability of the STP vehicle-mounted host and ground equipment is ensured to the greatest extent, and the application has the characteristics of strong adaptability and stable data communication.

[0065] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalent; without departing from the spirit of the technical scheme of the present application, they should be covered in the technical scheme range of the present application claimed by the present application.

Claims

1. A STP on-board host for train-ground redundant communication, characterized in that: The vehicle-mounted host MCU unit includes a double-redundancy communication interface module, the double-redundancy communication interface module includes a serial communication channel I and a serial communication channel II, the vehicle-mounted host MCU unit is connected with the data transmission radio module through the serial communication channel I and is connected with the redundant public network 4G communication module through the serial communication channel II. The data transmission radio module is in communication connection with the data transmission antenna, and the redundant public network 4G communication module is in communication connection with the 4G antenna. The serial communication channel I includes a first serial port and a second serial port, wherein the first serial port is connected with the data interface of the data transmission radio module, and the second serial port is connected with the configuration interface of the data transmission radio module.

2. The STP on-board host for train-ground redundant communication of claim 1, wherein: The serial communication channel II includes a third serial port, and the third serial port is connected with the redundant public network 4G communication module. The STP vehicle-mounted host further includes a redundant GSM-R communication module, a communication switching module and a GSM-R antenna, the communication switching module is connected with the vehicle-mounted host MCU unit, the redundant public network 4G communication module and the redundant GSM-R communication module respectively, and a switching interface channel enables any communication module to work in communication.

3. The STP on-board host for train-ground redundant communication of claim 2, wherein: The redundant public network 4G communication module includes a microprocessor, a full-network 4G module, a SIM card switching circuit, a mobile SIM card seat, a mobile communication SIM card seat and a mobile telecommunication SIM card seat.

4. The STP on-board host for train-ground redundant communication according to claim 1 or 2 or 3, characterized in that: The SIM card switching circuit is connected with the microprocessor, the full-network 4G module is connected with the microprocessor and the SIM card switching circuit respectively, and the mobile SIM card seat, the mobile communication SIM card seat and the mobile telecommunication SIM card seat are connected with the SIM card switching circuit respectively. The 4G antenna is connected with the full-network 4G module. The vehicle-mounted host MCU unit further includes a CAN communication module, and the vehicle-mounted host MCU unit is connected with the CAN communication module.

5. The STP on-board host for ground-to-vehicle redundant communication of claim 4, wherein: Further, a power supply unit is arranged to supply power to the vehicle-mounted host MCU unit, the data transmission radio module, the data transmission antenna, the redundant public network 4G communication module and the 4G antenna.

6. The STP on-board host for train-ground redundant communication of claim 5, wherein: Further, a host shell is arranged, and the front surface of the host shell is provided with the power supply unit, the CAN communication module, the data transmission radio module and the redundant public network 4G communication module.

7. The STP on-board host for ground-to-vehicle redundant communication of claim 6, wherein: The back surface of the host shell is provided with a data transmission antenna interface, a 4G antenna interface, an inquiry host interface, a printer interface, a power supply interface, an insurance interface, a CAN communication interface and a power switch, the data transmission antenna interface is connected with the data transmission radio module, the 4G antenna interface is connected with the redundant public network 4G communication module, the CAN communication interface is connected with the CAN communication module, and the power switch and the power supply interface are connected with the power supply unit respectively. ​

Images