In view of the characteristics of electrical equipment corona discharge

a new type of corona discharge on-line monitoring system is presented.The system mainly consists of blind ultraviolet（UV）sensor

embedded computer and the GSM module.In the analysis based on the principle and UV sensor’s operating principle

the overall design of the system and the software design process based on Qtopia and Qt/Embedded 3.3.7 are described in detail.The field experiments show that the system is feasible

and thus provide a new way of thinking on corona discharge monitoring.The system is simple

low power consumption

low cost

to meet the requirement of power system on-line monitoring.