CN202093384U

CN202093384U - Multifunction vehicle bus (MVB) double redundancy car-door network system

Info

Publication number: CN202093384U
Application number: CN2011201819888U
Authority: CN
Inventors: 张伟; 茅飞; 陆驰宇; 许洪强; 詹先理
Original assignee: NANJING KANGNI ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: NANJING KANGNI ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2011-12-28
Anticipated expiration: 2021-05-31

Abstract

The utility model discloses a multifunction vehicle bus (MVB) double redundancy car-door network system, which comprises a first master door controller, a second master door controller and a plurality of slave door controllers, wherein the two master door controllers are connected with a vehicle control management system through an MVB, the two master door controllers and the plurality of slave door controllers are sequentially connected in series through a system internal bus, and the two master door controllers are arranged at the head end and the tail end of a series-connection structure respectively. The internal redundancy of the MVB double redundancy car-door network system resolves the problem that after a system internal bus of an existing car-door network system generates a breakpoint, the large-area communication line-dropping faults occur. The MVB redundancy guarantees that when the fault occurs in one master door controller, the other master door controller can still ensure the normal running of a vehicle network to the utmost. Simultaneously, only two door controllers adopt the MVB communication in a compartment, the loading rate of the MVB is greatly reduced, the communication cycle is shortened, the communication efficiency is improved, and a device cost is reduced.

Description

The two redundant car door network systems of MVB

Technical field

The utility model relates to a kind of car door network system of track traffic technical field, the two redundant car door network systems of in particular a kind of MVB.

Background technology

Car door network system in the current track field of traffic adopts following two kinds of network structures usually: a kind of is that a door system that saves the compartment all adopts MVB (Multifunction Vehicle Bus MVB) connected in series, and vehicle control management system TCMS (Train Control and Management System) carries out communication by the mode and the gating device of poll.

Another kind is that the door system in a joint compartment all adopts RS485 connected in series, and TCMS carries out communication by the mode and the gating device of poll.

If adopt first kind of network structure, can have following problem: 1,, increased MVB bus load rate, and taken a lot of network port resources, prolonged the cycle of communication because a plurality of gating devices in a joint compartment all pass through MVB bus and vehicle communication; 2, the gating device cost that has a MVB communication module is higher than the gating device of not being with the MVB communication module, causes cost to increase; 3, be cascaded by the MVB bus owing to a plurality of gating devices, the MVB bus produces breakpoint between communication failure or two gating devices if one of them gating device produces, gating device after the trouble spot all can lose communication with vehicle so, in train operation, cause the large tracts of land door system communication fault that goes offline, but door system can not monitored not even Be Controlled.

If adopt second kind of network structure, can there be following problem: because a plurality of gating devices are cascaded by the RS485 bus, the RS485 bus produces breakpoint between communication failure or two gating devices if one of them gating device produces, gating device after the trouble spot all can lose communication with vehicle so, in train operation, cause the large tracts of land door system communication fault that goes offline, but door system can not monitored not even Be Controlled.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of MVB is provided two redundant car door network systems, has realized the redundant and MVB bus failure redundancy of internal system bus failure by two main gating devices and a plurality of the series connection from gating device.

Technical scheme: the utility model comprises the first main gating device and the second main gating device and a plurality of from gating device, two main gating devices are connected by the MVB bus with the vehicle control management system, two main gating devices and a plurality of from gating device successively by the series connection of internal system bus, two main gating devices lay respectively at the first and last end of cascaded structure.

Described internal system bus comprises RS485 bus and CAN bus.

During operate as normal, the first main gating device is in master mode, and the described first main gating device will get up from the information gathering of the gating device and the second main gating device, send to the vehicle control management system by the MVB bus.

When the MVB communication failure took place the first main gating device, the second main gating device was in master mode, and will get up from the information gathering of the gating device and the first main gating device, sends to the vehicle control management system by the MVB bus, realized MVB bus failure redundancy.

When the internal system bus opens circuit, the first main gating device and the second main gating device are in charge of the network communication of breakpoint both sides, and the breakpoint both sides that will collect separately send to the vehicle control management system respectively from gating device information, realize internal system bus failure redundancy.

Beneficial effect: the utility model has the following advantages compared to existing technology, the utility model adopts two main gating devices and a plurality of from gating device, link to each other by the network of internal system bus, realize two Redundant Control of car door network communication fault with MDCU (Main Door Control Unit master gating device).After the internal system redundancy has solved in the existing car door network system internal system bus and has produced breakpoint, the go offline problem of fault of large tracts of land communication; The MVB redundancy has solved after a main gating device fault, and another main gating device still can guarantee the normal operation of vehicle network to greatest extent.Have only two gating devices to adopt the MVB communication in the joint compartment simultaneously, greatly reduce the load factor of vehicle MVB bus, shortened communication cycle, improved communication efficiency, also reduced equipment cost.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation under the first main gating device MDCU1 failure condition;

Fig. 3 is from gating device LDCU7 with from producing the structural representation under the breakpoint situation between the gating device LDCU9.

Embodiment

Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.

As shown in Figure 1, present embodiment comprise the first main gating device MDCU1, the second main gating device MDCU2, from gating device LDCU3, from gating device LDCU4, from gating device LDCU5, from gating device LDCU6, from gating device LDCU7, from gating device LDCU8, from gating device LDCU9 with from gating device LDCU10.

Vehicle control management system TCMS links to each other with the second main gating device MDCU2 with the first main gating device MDCU1 respectively.The first main gating device MDCU1 links to each other by the MVB bus with the second main gating device MDCU2, all is provided with the MVB communication module in the first main gating device MDCU1 and the second main gating device MDCU2.The first main gating device MDCU1 and the second main gating device MDCU2 and a plurality of from gating device successively by internal system bus series connection, two main gating devices lay respectively at the first and last end of cascaded structure, promptly the first main gating device MDCU1 is positioned at head end, and the second main gating device MDCU2 is positioned at end.The first main gating device MDCU1 passes through the RS485 bus and links to each other from gating device LDCU3, pass through the RS485 bus and link to each other from gating device LDCU3 from gating device LDCU5, pass through the RS485 bus and link to each other from gating device LDCU5 from gating device LDCU7, pass through the RS485 bus and link to each other from gating device LDCU7 from gating device LDCU9, pass through the RS485 bus and link to each other from gating device LDCU9 from gating device LDCU10, pass through the RS485 bus and link to each other from gating device LDCU10 from gating device LDCU8, pass through the RS485 bus and link to each other from gating device LDCU8 from gating device LDCU6, pass through the RS485 bus and link to each other from gating device LDCU6 from gating device LDCU4, link to each other with the second main gating device MDCU2 by the RS485 bus from gating device LDCU4, thereby it is in a joint compartment that 10 fan door systems are connected in series, two primary controller MDCU1, MDCU2 carries out communication with vehicle control management system TCMS respectively by the MVB bus.From adopting CAN bus or other connected modes to link to each other between the gating device.

Under the normal mode of operation: the first main gating device MDCU1 that is in master mode will send to vehicle control management system TCMS by the MVB bus from gating device LDCU3, from gating device LDCU5, from gating device LDCU7, from gating device LDCU9, from gating device LDCU10, from gating device LDCU8, from gating device LDCU6, from gating device LDCU4 be in from the information gathering of the second main gating device MDCU2 of control pattern on the RS485 bus.

As shown in Figure 2, produced the MVB communication failure if be in the first main gating device MDCU1 of master mode, then be in the work that to take over the main gating device that originally was in master mode from the second main gating device MDCU2 of control pattern, will be on the RS485 bus from gating device LDCU3, from gating device LDCU5, from gating device LDCU7, from gating device LDCU9, from gating device LDCU10, from gating device LDCU8, from gating device LDCU6, from gating device LDCU4 with originally be in the information gathering of the main gating device of master mode, send to vehicle control management system TCMS by the MVB bus, TCMS only loses the information of the fault first main gating device MDCU1.

As shown in Figure 3, under the situation that opening circuit has appearred in RS485 bus line somewhere (with from gating device LDCU7 and to produce breakpoint from RS485 bus between the gating device LDCU9 be example): the first main gating device MDCU1 will send to vehicle control management system TCMS by the MVB bus from gating device LDCU3, from gating device LDCU5 with from the information gathering of gating device LDCU7 on the RS485 bus; The second main gating device MDCU2 will be from gating device LDCU4, from gating device LDCU6, from gating device LDCU8 on the RS485 bus, get up from gating device LDCU10 with from the information gathering of gating device LDCU9, send to vehicle control management system TCMS by the MVB bus, TCMS can not lose any information.

Claims

1. two redundant car door network systems of a MVB, it is characterized in that, comprise the first main gating device and the second main gating device and a plurality of from gating device, two main gating devices are connected by the MVB bus with the vehicle control management system, two main gating devices and a plurality of from gating device successively by the series connection of internal system bus, two main gating devices lay respectively at the first and last end of cascaded structure.

2. the two redundant car door network systems of MVB according to claim 1, it is characterized in that: described internal system bus comprises RS485 bus and CAN bus.