Infrared encoded positioning based automatic operation control system for four machines of cokery

Abstract

An automatic control system based on infrared encoding and locating technique for the coke pusher, coke guide, coke quencher and coal loader of coke oven features that the computer is used for autocontrol and management, the infrared encoding and locating unit is used for position detection, the digital communication hardware platform, PLC and industrial control computer are used for communication, which has 7-layer protocol and master-slave structure, and the low-speed high-torque driver with frequency-charging step speed regulation is used for control running of locomotives. Its advantages are high productivity, high correctness and high reliability.

Description

technical field [0001] The invention belongs to the field of automatic control in the coking industry, and relates to an automatic operation control system for four coke oven locomotives based on infrared coding positioning technology. Background technique [0002] In the prior art, the four locomotives of the coke oven in the coking plant—namely, the coke pushing car, the coke blocking car, the coke quenching car and the coal loading car, in actual operation, the first three locomotives must be strictly aligned during the coke discharge process of the coke oven. The same position is the number of the coke oven that is ready to be discharged, so as to ensure the normal and smooth discharge of the coke, otherwise, it will cause the coke pusher to touch the furnace wall and damage the coke oven or cause major accidents such as red coke falling to the ground, and the coal loading car is not safe. There is no strict synchronization requirement; the traditional method is: use the...

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Problems solved by technology

[0002] In the prior art, the four locomotives of the coke oven in the coking plant—namely, the coke pushing car, the coke blocking car, the coke quenching car and the coal loading car, in actual operation, the first three locomotives must be strictly aligned during the coke discharge process of the coke oven. The same position is the number of the coke oven that is ready to be discharged, so as to ensure the normal and smooth discharge of the coke, otherwise, it will cause the coke pusher to touch the furnace wall and damage the coke oven or cause major accidents such as red coke falling to the ground, and the coal loading car is not safe. There is no strict synchronization requirement; the traditional method is: use the naked eye to observe and communicate with the walkie-talkie to realize the alignment of the three vehicles. The biggest defect is that it is greatly affected by the environment and human factors, and there are many problems and hidden dangers. Therefore, it has basically been eliminated and used; There are many ways to realize locomotive automatic alignment and communication with new technology at home and abroad, the key is to solve the accuracy and reliability of locomotive position detection, such as: rotary encoder position detection device, its theoretical accuracy (resolution) is very high , but due to factors such as the mechanical slip of the code wheel, its reliability is greatly reduced; position detection devices such as electromagnetic induction encoders, positioning piece photoelectric encoders, and positioning piece electromagnetic encoders, due to the harsh environment of the coking plant, high temperature, dusty, Strong electromagnetic interference, etc., have greatly affected the accuracy of this type of method, and there are certain problems, which cannot fully meet the needs of the automatic production operation and computer management of the four major locomotives.

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