Four-channel FlexRay bus communication module

Abstract

The invention discloses a four-channel FlexRay bus communication module which comprises a FlexRay bus interface circuit, a microprocessor, as well as a debugging and testing interface circuit, a power supply circuit, a clock circuit, a reset circuit and an LED (Light-Emitting Diode) circuit which are respectively connected with the microprocessor, wherein the FlexRay bus interface circuit is divided into four branches, comprises a bus transceiver connected with a FlexRay bus and a communication controller for connecting the microprocessor with the bus transceiver, and is used for receiving external data information by virtue of the bus transceiver and transmitting the data information to the microprocessor by the action of the communication controller; and after being processed by the microprocessor, the data is transmitted to external equipment by virtue of the FlexRay bus interface circuit. According to the four-channel FlexRay bus communication module, the microprocessor MPC565 is adopted in the communication module, the four-channel FlexRay bus output capability is realized, and the FlexRay application range is expanded.

Description

technical field [0001] The invention belongs to the technical field of network communication, in particular to a four-channel FlexRay bus communication module. Background technique [0002] FlexRay is a relatively new type of bus communication system, which is developed based on the application background of X-by-Wire on future cars. In 2000, seven companies including BMW, Mercedes-Benz, and General Motors established the FlexRay Communication Alliance, and on this basis, the FlexRay V1.0 communication protocol was formed in 2001. After more than ten years of development and hundreds of versions of upgrades, Currently, the FlexRay communication protocol has been updated to version V3.0. In 2006, FlexRay was successfully applied to high-end cars such as BMW X5 and X7, marking the maturity of FlexRay. [0003] As a new bus technology, FlexRay has a data transmission rate of up to 20 Mbit / s, 20 times that of CAN, and a data transmission efficiency of up to 96.9%, which is 1.6...

AI Technical Summary

Problems solved by technology

At present, the domestic research on FlexRay is still in its infancy, and most of them are still in the theoretical research stage. At present, the FlexRay communication controllers are all 16-bit, and the objects are mainly 16-bit single-chip microcomputers, and most of the FlexRay bus nodes adopt a dual-channel communication structure. , restricting the scope of application of FlexRay

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