The Design of Remote Monitoring System for Indoor Electrical Safety

Causes of electrical fires have great variety. In view of the main, this paper explores the algorithm of fault arc detection and the method of electric appliance identification, and briefly shows the overall design of the monitoring system. The judging threshold of fault arc can be carried out through building an AR model of normal current signal and calculating the coefficients of the AR model with the third-order Burg algorithm. The existence of fault arc can be determined by the squared Euclid distance between the threshold and the coefficients of current signal. The pattern recognize based on the Fourier series of current signal as characteristic values can be used as Electrical appliances identification methods combined with the power of appliance.