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发明公开
CN106789511A 基于FPGA的列车用CAN通信转换控制方法及转换模块 有权

基于FPGA的列车用CAN通信转换控制方法及转换模块
摘要：
本发明涉及一种基于FPGA的列车用CAN通信转换控制方法及转换模块，方法步骤为：FPGA连接至少三个CAN接口模块，一个模块级CAN接口模块接FPGA所在设备的内部模块级CAN总线，其余CAN接口模块中，一个CAN接口模块或两个CAN接口模块接待通信的一个设备的设备级CAN总线，FPGA还连接数字量输入接口单元。FPGA将模块级CAN接口模块接收到的设备内部模块级CAN总线发送的数据重新打包，同时通过其他CAN接口转发至其他设备，FPGA将其他CAN接口模块接收到的设备级CAN总线发送的数据重新打包，同时通过模块级CAN接口模块发送至该设备的其他相关模块。本发明能够满足三路及三路以上CAN总线的要求，实现数据的快速可靠传输。
摘要（英）：

The invention relates to a CAN communication conversion control method and conversion module for a train based on FPGA. The CAN communication conversion control method for a train based on FPGA comprises the following steps: the FPGA connects at least three CAN interface modules; one module level CAN interface module is connected to the internal module level CAN bus of the FPGA device; and for the rest of the CAN interface modules, one CAN interface module or two CAN interface modules are connected to the device level CAN bus of a communication device; and the FPGA also connects the digital input interface unit. The FPGA repackages the data sent by the internal module level CAN bus of the device and received by the module level CAN interface module, and forwards to other devices through other CAN interfaces at the same time; the FPGA repackages the data sent by the device level CAN bus and received by other CAN interface modules, and sends to the other related modules of the device through the module level CAN interface module at the same time. The invention can meet the needs of three and three or more CAN buses, and can realize fast and reliable data transmission.

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