Remote Fault Diagnosis Based on Virtual Instrument Technology

The remote fault diagnosis for complex equipment based on virtual instrument (VI) technology is studied. It can promote the maintenance and fault diagnosis methods under the network environment. Firstly, the technology necessity of remote fault diagnosis for complex equipment is analyzed. Secondly, the system model of remote fault diagnosis system including base station and center station is discussed. Then the versatile computer supported cooperate work (CSCW) environments for remote fault diagnosis are developed, which are based on LabWindows/CVI and Datasocket technology of National Instrument respectively. LabWindows/CVI is adopted to set up the VI environment, which support DataSocket transmission protocol for communication between base station and center station. Finally, a test system is setup to validate the proposed system model. An engine is taken as an example to establish remote fault diagnosis system. Several key technology designs are discussed. It is proved to be efficient, and the design scheme of remote fault diagnosis is feasible