Large-scale water pump set is the common rotation machinery using the spot check method and making check tour with the monitoring system (including the data-collection system). When the prime examination finds sign of fault,focal check and diagnosis can be used. Intelligent monitor and the tele-communication based on virtual system are introduced.As the pump set is the key machinery, real-time and on-line examining is used in monitoring and diagnosis. Discrete Wavelet Transform is applied to deal with the v...