Design And Realization Of Energy-Saving Intelligent Monitoring System Of Air Compressor

The aircompressor is one kind of machines which can transform mechanical energy into gaseous energy by increasing the air pressure and transporting the gaseous energy. The air-compressor is used very widely such as agriculture, national defense, technology, public and other almost all realm. However, air-compressors have some shortages such as low efficiency, high consuming of electricity energy, too much servicing work and high cost. Especially, the huge air-compressor used in mines runs 24 hours everyday without break, with a long time without load. Increasing the efficiency of air-compressor and declining energy consume by changing the system control mode are very important.This paper is based on the project of aircompressor monitoring system of Yanzhou Mineral Industry Groups. The basic theory and method are analyzed in detail about how to apply the PLC and transducer technology to design the energy saving intelligent monitoring system of aircompressors. This method replaces the old relay control mode that mainly bases on the manual operation.After analyzing the working principles and characteristics of aircompressor, the paper gives the design method for both the hardware and software of the system. For the software design, it includes two parts: supervisory software and PLC programming part, which are separately designed by the software Protlool/pro and Step7 v5.2 provided by Siemens Company. The supervisory software is composed of several screens. All the current information coming from the aircompressor can be centralized to the supervisory screens. In this way, the operators can know well about the whole system state, modifying the system parameters in time, improving the automation process and deducing the faults. To the programming software, the paper brings forth the structuring program mode. This method is visual, clear and convenient to debug. Aiming at the pressure of wind box, traditional PID control algorithm and frequency conversion technology were applied to realize the stabilization of pressure control system and to improve...