Research Of Pressure/Liquid Position Control System Which Is Based On Single Chip

This paper introduces the development of process control system, the nowadays situation and several new techniques, which are good for the improvement of automatization, in both China and other countries.This paper has done many research, including: the immanent structure, controlling objects and the main features of TKGK—1 Process Control System; choosing the typical parameter—hydraulic position / pressure as the main object, we have designed a Distributed Control System, which is composed by PC, called epigyny computer, AT89C51, called hypogyny single chip, and other assistant equipments, such as sensor, transducer and related interface components. Putting the emphasis on the introduction of data collecting and disposing system, which is based on the single chip TLC2543, and the data traffic system, which is based on the communication standard RS—232C. The introduction contains the designing idea and working process of the formality module above. Introducing the Watch Dog circuit which is used to improve the anti—jamming ability of the system.The hardware and software of the TKGK—1 Process Control System, which is based on the single chip, both use the modularize design. The hardware module is easy to produce and maintenance; the software module is easy to amend and upgrade. The data collecting and disposing formality and the communication formality, which is used between epigyny computer and hypogyny single chip, are both use the assemble language that has the high efficiency. The alternative interface of epigyny between human and computer, the formality which is used for exporting data, both use the high—class language VB.According to the research of this paper, we can give a summarize of the advantages of the Process Control System which is based on the single chip: small; the application system is simple and practical; lower cost, good benefit; has the upper capability price ratio; has better anti—jamming ability and higher dependability. This paper is a availability attempt for putting the Process Control System which is based on single chip into practical manufacture. It also provides valuable design idea that can be used to improve the national process control automatization level.