Dual-redundant CAN bus communication system and communicating method thereof

The invention provides a dual-redundancy CAN bus communication system which is characterized in that: the communication system adopts a dual-bus structure; the dual-bus is provided with a plurality of CAN nodes; the CAN nodes comprise a node processor, two bus controllers and two bus drivers; the two bus controllers are respectively connected with different buses by the two bus drivers; the node processor and the two bus controllers are connected to control the communication of the bus controllers. The special dual-bus structure of the communication system effectively improves the fault-tolerant ability of communication links and the reliability of the whole system.