A minimal single-chip microcomputer system with redundant reset and redundant control functions

Abstract

The invention provides a minimal single chip microcomputer system with redundant reset and redundant control functions, the system including two sets of minimum single-chip microcomputer systems, which are divided into main and auxiliary ones. Each set of minimum single-chip microcomputer system is composed of a single-chip microcomputer, a crystal oscillator circuit, a watchdog circuit, a staticmemory circuit, an input channel circuit and an output channel circuit. Two sets of minimal single-chip microcomputer system are redundant design mutually. The main minimum single-chip microcomputer system realizes the main function of the product, the auxiliary minimum single-chip microcomputer system realizes the auxiliary function of the product, and the two sets of minimum single-chip microcomputer systems run according to their own design functions respectively. When the main MCU system can not work normally, it can be awakened by its own watchdog circuit, and can be awakened by the watchdog circuit of the auxiliary MCU system. When the main minimum single-chip microcomputer system is completely damaged, the auxiliary minimum single-chip microcomputer system can conduct redundancy ofthe main functions of the main minimum single-chip microcomputer in emergency.

Description

technical field [0001] The invention belongs to the technical field of single-chip microcomputer application, and in particular relates to a minimum single-chip microcomputer system with redundant reset and redundant control functions. Background technique [0002] In the current technical fields such as intelligent equipment, industrial control, and testing technology, the application and design of single-chip microcomputer systems are almost inseparable. With the development of digital and intelligent technology, single-chip microcomputer technology is increasingly promoted, and the reliability of single-chip microcomputer systems has been improved a lot, but due to the large number and variety of components used in electronic products, they are easily affected by the electrical environment / natural environment , its reliability problem is still unsatisfactory. [0003] Traditional single-chip microcomputer application systems often have only one single-chip microcomputer ...

AI Technical Summary

Problems solved by technology

The hardware failure and software bug of the single-chip microcomputer are the fatal factors that lead to the reliability of the single-chip microcomputer system

[0004] To sum up, it is necessary to provide a single-chip microcomputer system, which can not only solve the problem of product function failure caused by the hardware failure of the single-chip microcomputer, but also solve the problem of poor performance caused by the software problem of the single-chip microcomputer

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