Communication device and communication method

Abstract

The invention provides a communication device and a communication method. A first type of interface arranged on a data processing module is connected with EMD double buses. A second type of interface arranged on the data processing module is connected with an ESD single bus. In this way, when an EMD bus A or an EMD bus B in the EMD double buses receives data, the data are transmitted to the ESD single bus through the first type of interface, the data processing module and the second type of interface. Meanwhile, when the ESD single bus receives data, the data are transmitted to a target bus through the second type of interface, the data processing module and the first type of interface. The target bus is a bus selected from the EMD bus A / B of the EMD double buses and required to receive data. As a result, when the communication of the EMD bus A is in the abnormal state, the ESD single bus can be still in commutation with the EMD bus B. Therefore, the probability of the normal running of a whole vehicle and the communication reliability are improved.

Description

technical field [0001] The invention belongs to the technical field of MVB (Multifunction Vehicle Bus, multifunctional vehicle bus), and in particular relates to a communication device and a communication method. Background technique [0002] For different types of trains, when the train is in the MVB network, it uses different buses to communicate with external devices, such as the on-board ATP (Automatic Train Protection, Train automatic protection) equipment uses ESD (Electrical Short Distance, electrical short distance) single bus to communicate with external devices, while CRH (China Railway High-speed, China High-speed Rail) 3 trains use EMD (Electrical Medium Distance, electrical medium distance) dual bus To communicate with external devices, the EMD dual bus can include EMD bus A line and EMD bus B line, and the ESD single bus can be ESD bus A line or ESD bus B line. [0003] In order to solve the communication between these two types of buses, a BCT (Bus Coupler Tr...

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Problems solved by technology

[0004] When there is a problem with the communication of the EMD bus line A, the on-board CCU of the CRH3 train will automatically switch to use the EMD bus line B. At this time, because the on-board ATP device using the ESD single bus cannot communicate with the EMD bus line B, resulting It cannot operate normally, and when the vehicle-mounted ATP device of the ESD single bus cannot communicate with the B line of the EMD bus, the communication between the vehicle-mounted device ATP and the DMI (Driver Machine Interface, Human-Machine Interface) module will also be interrupted

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