| With the improvement of living standards, requirements for frequency conversion air-condition is also growing, which urgently demands for the study and development of the detection and maintenance technique for air-conditioning.The frequency conversion air-condition detecting system developed in our group is system detecting and maintaining engineer-oriented. Our system will provide them with some useful reference data in air-condition detection and maintenance, hence has much utility values.This detection system has testing functions for parameters such as the controlling mode, the wind velocity, and humidity et al; It can record the working parameters, that is, the details of the running conditions for one air-condition in a few days or even months can be stored into the SD cards, which is useful for comparison and analysis; It also has fault alarming function, i.e. once something is wrong with the air-condition, it can give fault alarming in time; It is convenient to set the working mode, such as the wind velocity indoors and outdoors, and electronic expansive valve opening grade, et al.In conjunction design, we endeavored to work for the convenience of future maintenance; for display design, we employed the 128*64-lattice LCD display to meet the needs of the users.In storage, we employed the most popular storage medium SD card, as it not only has small volume, large storage, but cheap to be obtained in the market, which brings great facility to the users. We employed the Rhapsody 7.0 of the American I-Logix company to make the entire layouts for the software designation of our system. We proposed the idea of the control separations of the programming between hardware and software, which is convenient for the future software maintenances.This thesis concentrated on the study and development of frequency conversion air-conditions system. We focused on the designs of both software and hardware to be more practical in daily life, and more convenient to maintain in future.
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