Car CAN bus network and its slave nodes and car

Abstract

The invention discloses a slave node of an automobile CAN bus network, comprising M I / O ports, among the M I / O ports, N ports are preset to be suspended, and the M-N I / O ports are connected with a plurality of input devices and A plurality of output devices are connected; the slave node is used to generate the address information of the slave node according to the acquired initial data of the preset N ports after power-on, and filter the collected at least one input data input by the multiple input devices respectively. The processing is at least one filtering processing data, the at least one filtering processing data and the address information of the slave node are encoded into at least one first CAN data according to the preset CAN bus protocol, and sent to the master node, and according to the received data sent by the master node. At least one second CAN data controls the plurality of output devices. The invention can optimize the control function of the automobile CAN bus network, has strong versatility and low cost. The invention also discloses an automobile CAN bus network and an automobile.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a slave node of an automobile CAN bus network, an automobile CAN bus network and an automobile. Background technique [0002] With the rapid development of new technologies in modern automobiles, as well as the continuous improvement of vehicle safety systems and comfort systems, more and more electrical equipment are used in vehicles. In order to better monitor these electrical devices and simplify the wiring harness structure, the CAN bus system is widely used to realize data exchange between nodes. [0003] figure 1 It is a schematic diagram of the topology structure of the automobile CAN bus network in the related art, such as figure 1 As shown, the automotive CAN bus network is usually composed of a master node and multiple slave nodes. The master node is usually a digital instrument, which receives the data transmitted by each slave node and displays the data through ...

AI Technical Summary

Problems solved by technology

However, in practical applications, due to the different vehicle models, the electrical characteristics and positions of the sensors installed near the slave nodes are different, which will lead to different control functions of the slave nodes, and the software functions of the slave nodes need to be changed accordingly, making the software development of the slave nodes 1. The project management and post-maintenance of the automotive CAN bus network have increased unnecessary workload, therefore, it is necessary to improve the automotive CAN bus network in related technologies

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