Real time multiple task distributive control system based on VME bus

A technology of distributed control and bus controller, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of poor versatility, poor system openness, low CPU operating speed, etc., and achieve easy function expansion , the effect of clear functional relationship

Active Publication Date: 2007-06-27
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of poor system openness, poor versat

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  • Real time multiple task distributive control system based on VME bus

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Embodiment Construction

[0014] The invention mainly includes a VME bus case, a CPU main board, an Ethernet communication interface board, a reflective memory communication interface board, a PROFIBUS communication interface board, a digital signal interface board, an analog signal interface board and a motor control board. Below in conjunction with the specific embodiment of the present invention, the composition and main functions of each unit module of the present invention are described as follows:

[0015] 1. VME bus chassis

[0016] Including 6U height chassis, bus base, a set of control power supply. The bottom board is equipped with 5V and ±12V power supplies to supply power to the boards in the rack.

[0017] 2. CPU motherboard

[0018] The CPU motherboard is mainly composed of a microprocessor chip, dynamic RAM, FLASH ROM, VME bus controller and integrated Ethernet communication interface. The dynamic RAM is used to load the debugging program, which is convenient for debugging and modific...

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Abstract

The control system includes VME bus chassis, CPU main board, Ethernet comm interface board (CIB), reflection memory CIB, PROFIBUS CIB, digital signal interface board, analog signal interface board, and electrical motor control board (MCB). Boards and cards are inserted to backboard inside the VME bus chassis. Through VME bus, boards and cards in backboards inside same chassis can communicate each other through VME bus. Each board contains VME bus controller. VME bus controller implements functions of gating board, bus arbitration, interrupt response control, and reading and writing data. Each board possesses own address. Through VME bus, gated board exchanges data to CPU board. Using shared memory exchanges data between CPU boards in same backboard bus. The reflection memory CIB executes remote comm and real time control among multiple control systems. MCB can exchange data to CPU main board, and control motor through optical fiber interface driven by power switch in bottom layer.

Description

technical field [0001] The invention relates to a real-time multi-task distributed control system, in particular to a real-time multi-task distributed control system based on VME bus. Background technique [0002] In the field of large-scale electric traction and transmission control, there are high requirements for real-time control, diversity and complexity of control functions, and the composition of its control system must meet the above requirements. Judging from the research and product situation at home and abroad, the real-time control system CPU was mainly based on eight-bit computers in the early days. Typical chips such as Intel8085, Z80, etc., due to the low calculation accuracy and slow speed of eight-bit computers, the digital controller composed of it Speed ​​system, the performance of the transmission system is not ideal. In the mid-to-late 1980s, 16-bit microprocessors, such as Intel 8086, Motorola 68000, 80C196, etc., were adopted. The all-digital speed co...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 葛琼璇李耀华刘洪池王晓新张树田
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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