PURPOSE: the electric power based on zigbee is provided to applied to a variety of environment about single power measuring part as sensor network. ;CONSTITUTION: a kind of ZigBee communication unit (101) exchange information is to carry out other modules. The signal of power measurement unit (102), which is converted to, receives the value from CT sensors and power. Collected data are stored according to storage unit (103). A kind of CT sensor units (104) use annular CT sensors. A kind of instruction device (105) expression measurement data. ;The 2012 of copyright KIPO submissions
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