Management of Microcomputer and Programmable Controller Function Control System - Program Management Microcomputer function management The function of the microcomputer is to monitor the operation status of the thin oil station while the control room is in progress. On the one hand, the RS232 communication interface continuously receives the data information of the programmable controller and displays it on the display, and periodically stores the accepted data in the management database in the management microcomputer as a historical record for later analysis and experience summary. And use in accident handling. On the other hand, the management microcomputer continuously calculates and compares the data from the programmable controller. Once the data information of the oil supply pressure, the fuel supply temperature and the fuel supply flow rate of the thin oil station appears, the management microcomputer issues an instruction to the on-site maintenance. The department alarmed and requested maintenance. If there is no response within a certain period of time, then the management microcomputer issues a higher level of alarm instructions to the maintenance department and the relevant supervisor. If there is still no response within a certain period of time, the management microcomputer issues an instruction to prompt that the compressor and the oil station will be shut down after a certain period of time. At the same time, all the data from the beginning of the alarm to the last record and the converted human-machine dialogue words are stored in the management database of the management microcomputer as a historical record for later query, analysis, experience summarization and accident handling. The machine adopts the operation mode of the human-machine dialogue platform. The main management program is written in FOXPRO language under the WINDOWS operating system, and the communication with the programmable controller is written in BASIC language. Programmable Controller Control System The programmable controller is a general-purpose automatic control device manufactured by microcomputer technology. It is mainly based on sequential control, supplemented by loop mediation, and can perform logic judgment, timing, counting, memory and arithmetic operations. It can control the amount of switching, digital quantity, control of analog quantity, communication with computer, and adapt to a wide range of environments and high reliability. In view of the above characteristics, we use it as the control center equipment of the thin oil station, and based on this, the main control system is developed, and the development results are explained by partial procedures (see Procedure 2). Conclusion I developed this microcomputer control management system and compiled system software. It is proved to be easy to operate by using 4 sets of equipment in 2D10 hydrogen compressor thin oil station of Liaohe Oilfield Petrochemical Plant and 2D315 hydrogen compressor thin oil station of Jinan Refinery. It is safe and reliable, and has broad prospects for promotion and use. First, the investment in this system is not large, except for the addition of programmable controllers and signal processing devices, there is no more equipment, and the investment of secondary instruments is reduced. Second, the system eliminates the relative independence of the original microcomputer management system and the control system. The microcomputer management system is complicated to operate, often error-prone, and cannot be separated from manual inspection management. The microcomputer and the programmable controller are organically combined and The entire system is simple to operate and reliable. Third, running the system does not require a full-time computer operator, and only needs part-time to meet the requirements. It can ensure the efficient and stable operation of the lubrication system of the thin oil station. As a new application technology, it is necessary to continuously improve in practice and continuously expand the application field. As a developer, I sincerely hope that this development will continue to expand the application field, in order to maximize its practical value.
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