CN101951337A

CN101951337A - ARM7-based MVB-MVB gateway and working method thereof

Info

Publication number: CN101951337A
Application number: CN 201010291173
Authority: CN
Inventors: 陈玉飞; 石勇
Original assignee: CNR Dalian Electric Traction R& D Center Co Ltd
Current assignee: CRRC Dalian R&D Co Ltd
Priority date: 2010-09-21
Filing date: 2010-09-21
Publication date: 2011-01-19

Abstract

The invention discloses an ARM7-based MVB-MVB gateway and a working method thereof. The gateway comprises an MVB board card A, an MVB board card B, a CPU board card, a power board card and a backboard; the MVB board card A and the MVB board card B are bidirectionally connected with the CPU board card through a backboard bus, have the same structure and both comprise an FPGA processor and an MV bus driver; the CPU board card comprises a central processor and a level conversion circuit; and the central processor comprises an ARM7 chip. The invention provides a gateway using only one MVB bus and implements cascade connection of small-scale trains without setting an auxiliary WTB bus. With simple and flexible technology, the method is particularly suitable for the urban mass transit industry of current scale and has good realistic significance.

Description

A kind of MVB-MVB gateway and method of work thereof based on ARM7

Technical field

The present invention relates to be applied to the Computer Communication Networks control system of the industrial control field that real-times such as subway train and urban rail transit vehicles have relatively high expectations, particularly a kind of MVB-MVB gateway and method of work thereof based on ARM7.

Background technology

Along with the needs of railway great-leap-forward development, motorcoach trains such as CRH5, CRH2, HXD1 are used on the basic routing line at home widely, and external advanced TCN network control technology has been introduced domestic.Simultaneously the electric locomotive vehicle of China also begins to adopt successively the TCN technology, promptly solves problems such as the collection of on-the-spot all signals and control by the TCN network.IEC61375-1 " TCN " (being called for short the TCN standard) is an international standard, also is China railways industry standard TB/T3035-2002.

At present, because the sharp increase of urban population, urban transportation is more and more crowded, and under so a kind of situation, urban track traffic is big because of handling capacity of passengers, speed is fast etc., and advantage has obtained development fast.Corresponding TCN technology also is applied in the urban track traffic field.For Large-scale Railway, the TCN technology is carried out cascade by train bus-line WTB and multifunction vehicle bus MVB with vehicle, thereby reach the purpose of extensive handling capacity of passengers, and for urban track traffics such as subway, light rails, owing to there is not the extensive carrying demand of Large-scale Railway, if so also continue to adopt the TCN technology fully, then seem and waste one's talent on a petty job a little, the waste resource.If can be with the MVB bus both as vehicle bus, simultaneously also can then can save resource, but need the DTU (Data Transfer unit) between a MVB vehicle bus and the MVB train bus-line as train bus-line, be the MVB-MVB gateway, but domesticly still do not have ready-made MVB-MVB gateway and can adopt.

Summary of the invention

For solving the problems referred to above that prior art exists, the purpose of this invention is to provide a kind of MVB-MVB gateway and method of work thereof based on ARM7, be mainly used in the MVB network control system of subway train and city rail industry, the MVB equipment that connects each vehicle, can either communicate with the MVB networking of this section car, also can communicate with other MVB networks that saves car.

To achieve these goals, technical solution of the present invention is achieved in that a kind of MVB-MVB gateway based on ARM7, comprise MVB integrated circuit board A, MVB integrated circuit board B, CPU board card, power supply integrated circuit board and backboard, described MVB integrated circuit board A is connected with the CPU board card is two-way by core bus respectively with MVB integrated circuit board B, described power supply integrated circuit board respectively with MVB integrated circuit board A, MVB integrated circuit board B and CPU board card connection, described MVB integrated circuit board A also is connected with the MVB bus B is two-way with MVB bus A respectively with MVB integrated circuit board B; Described MVB integrated circuit board A has identical structure with MVB integrated circuit board B, includes FPGA processor and MVB bus driver; Described CPU board card comprises central processing unit and level shifting circuit; Described central processing unit comprises the ARM7 chip.

FPGA processor of the present invention comprises the MVB protocol controller.

A kind of MVB-MVB gateway and method of work thereof based on ARM7, the MVB data flow that the MVB data flow that comprises MVB bus A sends to method on the MVB bus B and MVB bus B sends to the method on the MVB bus A, and it is reciprocal that the MVB data flow of MVB bus A sends to the method step that the MVB data flow of method on the MVB bus B and MVB bus B sends on the MVB bus A; The MVB data flow of described MVB bus A sends to the method on the MVB bus B, may further comprise the steps:

A, MVB integrated circuit board A will import the FPGA processor of MVB integrated circuit board A from the MVB data flow of MVB bus A into by the MVB bus driver of MVB integrated circuit board A, after the FPGA processor allows, by core bus the MVB data are passed to the CPU board card, read in central processing unit then;

B, central processing unit with the MVB Data Stream Processing after, the FPGA processor of exporting to MVB integrated circuit board B by core bus generates the MVB signal again, the MVB bus driver by MVB integrated circuit board B sends on the MVB bus B then.

Central processing unit of the present invention is responsible for the exchange and the transmission of MVB data flow between MVB integrated circuit board A and the MVB integrated circuit board B.

FPGA processor of the present invention inside has the MVB protocol controller, data on the MVB network not only can be deciphered, pass to the CPU board card by backboard, and can encode through the signal that backboard transmits to the CPU board card, send into the MVB signal that the MVB bus driver generates standard, be sent on the MVB network.

Compared with prior art, the present invention has following beneficial effect:

1, owing to only the invention provides, do not need to finish in the mode of laying WTB bus again the cascade of small-scale train with a kind of gateway of MVB bus.This mode technology is simple, flexible, and the urban track traffic industry of the present scale of particularly suitable, has good realistic meaning.

2, the present invention is applied to urban track traffic industry control field with a kind of MVB-MVB network control technology based on the IEC61375-1 standard, solved the problem of only carrying out the vehicle cascade with multifunction vehicle bus MVB, have modern design, high reliability, high flexibility and characteristics with low cost, be with a wide range of applications in rolling stock industry and association area.

Description of drawings

4 in the total accompanying drawing of the present invention, wherein:

Fig. 1 is a mechanical structure block diagram of the present invention;

Fig. 2 is a MVB bus board card structure block diagram of the present invention;

Fig. 3 is the structured flowchart of CPU of the present invention;

Fig. 4 is a network topological diagram of the present invention.

Among the figure: 1, MVB integrated circuit board A, 2, MVB integrated circuit board B, 3, the CPU board card, 4, the power supply integrated circuit board, 5, backboard, 6, the FPGA processor, 7, the MVB bus driver, 8, central processing unit, 9, level shifting circuit.

Embodiment

Below in conjunction with accompanying drawing the present invention is further described.As Figure 1-3, a kind of MVB-MVB gateway based on ARM7, comprise MVB integrated circuit board A1, MVB integrated circuit board B2, CPU board card 3, power supply integrated circuit board 4 and backboard 5, described MVB integrated circuit board A1 and MVB integrated circuit board B2 are respectively by core bus and 3 two-way connections of CPU board card, described power supply integrated circuit board 4 is connected with CPU board card 3 with MVB integrated circuit board A1, MVB integrated circuit board B2 respectively, and described MVB integrated circuit board A1 also is connected with the MVB bus B is two-way with MVB bus A respectively with MVB integrated circuit board B2; Described MVB integrated circuit board A1 has identical structure with MVB integrated circuit board B2, includes FPGA processor 6 and MVB bus driver 7; Described CPU board card 3 comprises central processing unit 8 and level shifting circuit 9; Described central processing unit 8 comprises the ARM7 chip.Described FPGA processor 6 comprises the MVB protocol controller, and MVB bus driver 7 has improved the bus driver ability, has the high-frequency interferencing signal inhibitory action, and EMC satisfies the EN50155 standard.

A, MVB integrated circuit board A1 will import the FPGA processor 6 of MVB integrated circuit board A1 from the MVB data flow of MVB bus A into by the MVB bus driver 7 of MVB integrated circuit board A1, after FPGA processor 6 allows, by core bus the MVB data are passed to CPU board card 3, read in central processing unit 8 then;

B, central processing unit 8 with the MVB Data Stream Processing after, the FPGA processor 6 of exporting to MVB integrated circuit board B2 by core bus generates the MVB signals again, the MVB bus driver 7 by MVB integrated circuit board B2 sends on the MVB bus B then.

Described central processing unit 8 is responsible for the exchange and the transmission of MVB data flow between MVB integrated circuit board A1 and the MVB integrated circuit board B2.Described FPGA processor 6 inside have the MVB protocol controller, data on the MVB network not only can be deciphered, pass to CPU board card 3 by backboard 5, and can encode through the signal that backboard 5 transmits to CPU board card 3, send into the MVB signal that MVB bus driver 7 generates standard, be sent on the MVB network.

As shown in Figure 3, CPU board card 3 comprises central processing unit 8 and level shifting circuit 9, described central processing unit 8 receives two MVB bus data streams respectively, the MVB data flow of each section is selected reorganization, the core bus that passes through backboard 5 again is through level shifting circuit 9, import MVB integrated circuit board A1 and MVB integrated circuit board B2 into, central processing unit 8 is ARM7 nuclear microprocessors, is responsible for the processing operation function of program.FLASH and SDRAM are respectively central processing unit 8 program memory space and running space are provided.The bi-directional conversion that level shifting circuit 9 is responsible between 3.3V and the 5V level signal.In addition, central processing unit 8 peripheries also dispose electric power management circuit, voltage monitoring, real-time clock and reset circuit.

Be connected to core bus in the MVB-MVB gateway between each integrated circuit board and the integrated circuit board, this core bus has been followed the external memory access bus of standard, the core bus socket is the physical structure that above-mentioned integrated circuit board is coupled together, it carries out cabling and level match with the signal between integrated circuit board according to special requirement, and the 110V external power power supply interface of whole M VB-MVB gateway is provided simultaneously.Backboard of the present invention 5 designs are that the core bus signal has high reliability, good flexibility energy and Scalable Performance according to the characteristics design of the on-the-spot electric circumstance of railway systems; What power supply integrated circuit board 4 adopted is the method for modularized design, and the core power module of use is produced the power module chip for Japanese COSEL company, and purpose is that+110V voltage transitions is+5V power supply, supplies with that integrated circuit board uses in the cabinet, is a very stable power.

By the constructed MVB-MVB gateway of above-mentioned four integrated circuit boards, connect the MVB vehicle bus of every joint vehicle interior, the MVB network data between every like this joint car can transmit mutually.Every joint interior needs two such gateway devices, is convenient to the cascade of vehicle like this.The canonical system framework map as shown in Figure 4, form the MVB-MVB gateway by two MVB integrated circuit boards and CPU board card, connect two joint cars simultaneously, two MVB bus integrated circuit boards of intra-gateway with separately independently the MVB network communicate, the exchange of data and reorganization have 3 controls of CPU board card and processing.

Claims

1. MVB-MVB gateway based on ARM7, it is characterized in that: comprise MVB integrated circuit board A (1), MVB integrated circuit board B (2), CPU board card (3), power supply integrated circuit board (4) and backboard (5), described MVB integrated circuit board A (1) and MVB integrated circuit board B (2) are respectively by core bus and two-way connection of CPU board card (3), described power supply integrated circuit board (4) is connected with CPU board card (3) with MVB integrated circuit board A (1), MVB integrated circuit board B (2) respectively, and described MVB integrated circuit board A (1) also is connected with the MVB bus B is two-way with MVB bus A respectively with MVB integrated circuit board B (2); Described MVB integrated circuit board A (1) has identical structure with MVB integrated circuit board B (2), includes FPGA processor (6) and MVB bus driver (7); Described CPU board card (3) comprises central processing unit (8) and level shifting circuit (9); Described central processing unit (8) comprises the ARM7 chip.

2. a kind of MVB-MVB gateway based on ARM7 according to claim 1, it is characterized in that: described FPGA processor (6) comprises the MVB protocol controller.

3. MVB-MVB gateway and method of work thereof based on an ARM7, it is characterized in that: the MVB data flow that the MVB data flow that comprises MVB bus A sends to method on the MVB bus B and MVB bus B sends to the method on the MVB bus A, and it is reciprocal that the MVB data flow of MVB bus A sends to the method step that the MVB data flow of method on the MVB bus B and MVB bus B sends on the MVB bus A; The MVB data flow of described MVB bus A sends to the method on the MVB bus B, may further comprise the steps:

A, MVB integrated circuit board A (1) will import the FPGA processor (6) of MVB integrated circuit board A (1) from the MVB data flow of MVB bus A into by the MVB bus driver (7) of MVB integrated circuit board A (1), after FPGA processor (6) allows, by core bus the MVB data are passed to CPU board card (3), read in central processing unit (8) then;

B, central processing unit (8) with the MVB Data Stream Processing after, the FPGA processor (6) of exporting to MVB integrated circuit board B (2) by core bus generates the MVB signal again, the MVB bus driver (7) by MVB integrated circuit board B (2) sends on the MVB bus B then.

4. a kind of MVB-MVB gateway and method of work thereof based on ARM7 according to claim 3 is characterized in that: described central processing unit (8) is responsible for the exchange and the transmission of MVB data flow between MVB integrated circuit board A (1) and the MVB integrated circuit board B (2).

5. a kind of MVB-MVB gateway and method of work thereof according to claim 3 based on ARM7, it is characterized in that: described FPGA processor (6) inside has the MVB protocol controller, data on the MVB network not only can be deciphered, pass to CPU board card (3) by backboard (5), and can encode through the signal that backboard (5) transmits to CPU board card (3), send into the MVB signal that MVB bus driver (7) generates standard, be sent on the MVB network.