Study Of Test System Of Composite Characteristic Of Devices Based On Virtual Instrument

The development of deep mining engineering and water conservancy and electric power engineering is closely related with heavy electromechanical devices such as elevator, water pump and air compressor, which play a vital role. To avoid accident, repair or renewal parts betimes, periodic significance testing is necessary. With the rapid development of deep mining engineering and water conservancy and electric power engineering, the demand of accuracy, efficiency, cost and maneuverability is higher and higher. The measuring instrument being used now is difficult to meet the demand, so it is urgent to develop a new-style measuring instrument.The thesis begins with the problems of significance testing of elevator, water pump and air compressor, compares virtual instrument with traditional instrument, analyzes the advantages of virtual instrument, applies advanced virtual instrument software-LabVIEW to the testing of elevator, water pump and air compressor, and develops a test system of composite characteristic of devices combining significance testing of elevator, water pump and air compressor. In the thesis, it is detailed introduced that how to choose hardware including the data acquisition, sensor et al, and how to develop each test system including confirm of overall project of block flow diagram, realization of significance testing and auxiliary function, at last, integrates with the three test systems.The test system replaces hardware with software, is easy to be operated and has more functions. Comparing with traditional instrument, it improves accuracy of test results, development efficiency and eases labour. LabVIEW is of expansibility and openness, so the test system can not only be applied to the significance test of corresponding devices of deep mining engineering and water conservancy and electric power engineering, but also to relevant devices of other industries.