RS485-MVB gateway based on HDLC protocol and communication method
A RS485-MVB, RS485 technology, applied in the field of RS485-MVB gateway and communication based on HDLC protocol, can solve the problems of terminal equipment communication interruption, loss of vehicle control function, non-redundant interface channels, etc., to reduce impact, improve The effect of system stability
Active Publication Date: 2021-05-28
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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[0003]
In the process of realizing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: the lack of redundant function design leads to the risk of a single channel or processor failure causing power loss of the EMU traction unit or loss of vehicle control functions; the interface channel does not Redundant, non-redundant channel failures will lead to communication failures of terminal equipment, loss of power, or loss of vehicle control functions, causing the train to be disconnected, lowered or stopped, causing train delays; logic processing and data sending and receiving processing The redundant design of the device function is not perfect. When the relevant function processor fails, the communication of the terminal equipment in the compartment where the 485 gateway is located will be interrupted. Depending on the compartment and equipment, problems such as disconnection of the main breaker, loss of power, or loss of safety monitoring functions will occur, causing train restrictions. speed or stop, causing the train to be delayed; need to provide a more reliable solution
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[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0024] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. In addition, it can also be understood that although such development efforts may be complex and lengthy, for those of ...
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The invention relates to an RS485-MVB (Multifunction Vehicle Bus) gateway based on an HDLC (High-level Data Link Control) protocol. The RS485-MVB gateway comprises a first RS485-MVB gateway and a second RS485-MVB gateway, the first RS485-MVB gateway and the second RS485-MVB gateway respectively comprise an MVB board, a processor and an RS485 transceiver; wherein data interaction is carried out between the first RS485-MVB gateway and the second RS485-MVB gateway through the MVB board and the RS485 transceiver, and data interaction is carried out between the first RS485-MVB gateway and the second RS485-MVB gateway. The communication function of the RS485-MVB gateway cannot be degraded in fault modes such as fault of a single channel RS485 transceiver of the RS485-MVB gateway, fault of an MVB board or fault of a processor, so that normal operation of a train can be ensured. The invention further discloses a communication method of the RS485-MVB gateway based on the HDLC protocol and a computer storage medium.
Description
technical field [0001] The application relates to the technical field of rail transit trains, in particular to an HDLC-based RS485-MVB gateway and a communication method. Background technique [0002] The HDLC protocol-based RS485-to-MVB gateways of existing rail vehicles mostly adopt non-redundant or partially functionally redundant designs. The redundancy strategy of the existing RS485-MVB gateway is: the RS485-MVB gateway uses multi-processors to realize the functions of multi-channel RS485 data transmission and reception, redundant data processing and data forwarding, and some interface data realizes redundant collection through internal hard lines And transmit to the same processor, the processors with different functions communicate through the backplane bus. [0003] In the process of realizing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: the lack of redundant function design leads to the ri...
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Login to View More IPC IPC(8): H04L12/933H04L12/66
CPCH04L49/15H04L12/66
Inventor 刘鹏王凯田学文刘伟关吉瑞田宗举张广吉
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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