Redundancy control system and corresponding automobile electronic micro-control system

Abstract

The invention relates to a redundancy control system and a corresponding automobile electronic micro-control system. The redundancy control system comprises a micro-control unit failure detection module, a redundancy control module and a redundancy power supply module. The micro-control unit failure detection module is used for detecting a micro-control unit and transmitting a detection result tothe redundancy control module; when the micro-control unit fails, the redundant module enables the control right of the micro-control unit to be invalid and replaces the micro-control unit to output acontrol signal; and the redundant power supply module can control a second power supply to provide power for the redundant control module when a first power supply for providing power for the micro-control unit fails, so that the reliability of the circuit is further improved. The redundancy control system and the corresponding automobile electronic micro-control system have the advantages of being low in cost, high in reliability, light in weight, low in power consumption and high in adaptability.

Description

technical field [0001] The invention relates to the technical field of redundant design, in particular to the technical field of electronic embedded redundant design, and specifically refers to a redundant control system and a corresponding automotive electronic micro-control system. Background technique [0002] With the rapid development of automotive electronics technology, the functional safety requirements of automotive electronic components are getting higher and higher, and the failure rate of electronic units for internal modules is constantly being promoted to a lower direction. Therefore, redundant design is more and more widely used in embedded systems of automotive electronics. The so-called redundant design is to take over the work of the failed unit when a partial unit of the system fails, so that some or all functions of the unit can maintain normal operation. Its structure can be found in figure 1 As shown, the secondary micro-control unit is a redundant cir...

AI Technical Summary

Problems solved by technology

[0004] 1. The secondary micro-control unit lacks a redundant power supply design for redundant circuits. Once the power supply of the main micro-control unit is abnormal, the secondary micro-control unit will also fail at the same time, which cannot achieve the purpose of redundant control and lacks reliability;

[0005] 2. The overall design cost is high, and the addition of auxiliary micro-control units to achieve redundant control is not lightweight enough, and the cost increases more;

[0006] 3. The operating power consumption increases, and the sub-micro control unit increases the working current in the normal operation mode and the low power consumption mode

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