Method for dispatching rail traffic vehicle grade network based on CANopen (Controller Area Networkopen) protocol

Abstract

The invention discloses a method for dispatching a rail traffic vehicle grade network based on CANopen (Controller Area Networkopen). A dispatching method is designed for easily realizing the protocol open and development of a rail traffic vehicle grade network. The method comprises the following steps of: (a) confirming a rail traffic vehicle grade network cycle parameter; (b) confirming a data identifier; (c) establishing a network dispatching table according to the network cycle parameter and the data identifier; (d) deciding whether corresponding cycle data is transmitted or not after all nodes of the network receive a network synchronous frame signal; and transmitting accidental data at random during data change. The method achieves the aims of balanced network load, reasonable configuration, high reliability, good network performance optimization, strong instantaneity and large data volume, provides an open, reliable and easily developed network platform for a rail traffic vehicle grade equipment producer and easily realizes the interconnection of rail traffic vehicle grade equipment on the vehicle grade network.

Description

technical field [0001] The invention relates to a scheduling method, in particular to a scheduling method based on the CANopen protocol for rail transit vehicle-level networks and other large data volume and high real-time network applications. Background technique [0002] The field of rail transit is an important industry closely related to the national economy and people's livelihood that the country is vigorously developing at present. The vehicle-level network provides information sharing channels for various distributed devices on the vehicle, which is an important link in the entire vehicle control and plays an extremely important role in the modernization of rail transit. effect. At present, the vehicle-level bus of rail transit mainly adopts MVB. MVB is a part of the international standard IEC61375——Train Communication Networks (TCN), which was specially used for train vehicle-level networks when it was formulated. This bus standard has a history of several decade...

AI Technical Summary

Problems solved by technology

This bus standard has a history of several decades and is still at a dominant position. Its biggest advantages are fast communication speed and high bus utilization rate. However, its constraints on the development of rail transit in the country are becoming increasingly obvious: its hardware structure Complex, network protocol is not open, etc.

Difficulties in the development of network communication systems make it more difficult for the country to develop network control systems based on network communication, and other vehicle equipment independently developed by the country cannot be connected to the vehicle network for operation and other serious consequences.

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