16-bit multibus circuit in 2 in 3 or 2 in 2 control system

Abstract

The invention discloses a 16-bit multibus circuit in a 2 in 3 or 2 in 2 control system. The 16-bit multibus circuit in the 2 in 3 or 2 in 2 control system is characterized in that the system comprises three master modules and a bus arbitration application / release circuit. Each master module comprises a central processor, a programmable logic apparatus, a memory and a bus external interface which are independent. The program logic apparatus in each master module is electrically connected with the central processor, the memory and the bus external interface in the master module respectively. The program logic apparatuses in the three master modules are electrically with the bus arbitration application / release circuit respectively. Under a condition of same-level processor and due to the 16-bit multibus circuit in the 2 in 3 or 2 in 2 control system provided by the invention, the work efficiency and the operating speed of the system are improved, the device loss is reduced, the service life of the device is prolonged and the sending of incorrect commands is effectively prevented.

Description

technical field [0001] The invention relates to the switching selection of multi-buses in a control system, in particular to a 16-bit multi-bus circuit in a 3-out 2 or 2-out 2 control system. The circuit is used in a control system to process the bus control request signal through the programmable logic device and the bus application / arbitration circuit of the master module, and determine the currently active master device. Background technique [0002] Using multi-bus can be easily designed into a variety of microprocessor systems to achieve distributed processing, multi-processing and parallel processing. Compared with other buses, it has the advantages of wide application, complete functions, reasonable wiring, and strong adaptability. standard bus. [0003] A 2 out of 3 or 2 out of 2 control system is a control system in which multiple master devices are connected to the bus to form a multiprocessing configuration, and these master devices can share bus resources. How...

AI Technical Summary

Problems solved by technology

Although the design of this scheme is rigorous, it is relatively cumbersome, and the signal generation and processing time is relatively increased, thus affecting the work efficiency of the entire system

[0005] In addition, with the increase of computer computing requirements in modern industry and the proportion of computer processing in the current industry, the challenge is to ensure that the life of the electronic equipment in the control system matches the life of the entire set of equipment, as well as the entire Control the working stability and reliability of the system, so as to avoid unnecessary work due to equipment obsolescence and technology expiration

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