Double 2-vote-2 redundant system and method

Abstract

The invention provides a double 2-vote-2 redundant system and method. The system comprises a first part, a second part and a switching mechanism, wherein the first part comprises a first subsystem, a second subsystem and a first gate circuit, the first subsystem and the second subsystem are connected through a first main serial communication circuit and a first auxiliary serial communication circuit, the second part comprises a third subsystem, a fourth subsystem and a second gate circuit, and the third subsystem and the fourth subsystem are connected through a second main serial communication circuit and a second auxiliary serial communication circuit; all the subsystems receive the same input signal at the same time and conduct the same processing, each subsystem receives opposite-end data information from the corresponding subsystem at the opposite end through the corresponding main serial communication circuit and auxiliary serial communication circuit, sends local-end data information to the subsystem at the opposite end, and compares the opposite-end data information with the local-end data information and generates a comparison result signal, each gate circuit generates processing result signals according to the comparison result signals generated by the subsystems, and the switching mechanism generates switching control signals according to the processing result signals generated by the gate circuits. According to the double 2-vote-2 redundant system and method, more advanced double 2-vote-2 redundant system design is realized.

Description

technical field [0001] The present invention generally relates to computer system reliability design, and specifically relates to a two-by-two-out-two redundant system and method. Background technique [0002] Redundancy technology is often used in computer system reliability design, and it can be used as an effective method to improve computer system reliability. At present, with the rapid development of electronic technology and computer technology, people's requirements for system reliability and security are increasing day by day. The two-by-two redundant system is proposed as a redundant structure capable of achieving relatively high reliability. [0003] The existing two-by-two redundant system can be constructed as an instruction-level check system and a task-level check system. The instruction-level checking system needs to compare and vote in each instruction cycle, while the task-level checking system only performs comparison and voting when performing external o...

AI Technical Summary

Problems solved by technology

Although this architecture has the advantages of strong real-time performance and early detection of faults, the dedicated hardware circuit has disadvantages such as increased hardware overhead, no redundan

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