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1. (WO2017152316) POWER MEASUREMENT DEVICE EMPLOYING POWER CARRIER TECHNOLOGY

Pub. No.:    WO/2017/152316    International Application No.:    PCT/CN2016/075730
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Sun Mar 06 00:59:59 CET 2016
IPC: H04B 3/54
H04B 1/16
G01R 11/48
Applicants: MA, Jun
马骏
Inventors: MA, Jun
马骏
Title: POWER MEASUREMENT DEVICE EMPLOYING POWER CARRIER TECHNOLOGY
Abstract:
A power measurement device employing a power carrier technology, comprising a housing (1), the front surface of the housing (1) being provided with control keys (2), a communication interface (4), a display interface (5), and state indicator lights (8). The upper part of the housing (1) is provided with a power interface (6) and a signal interface (7). The power measurement device employing the power carrier technology communicates in real time with an external general service station by means of the communication interface (4), and transmits carrier data with an adjacent device by means of the power interface (6), guaranteeing the reliability of signal transmission of the device and reducing the wiring cost. By means of a passive band-pass filter composed of a second inductor (L2), a second capacitor (C2), and a third capacitor (C3) in a carrier receiving circuit, the filtering reliability is ensured, and the power carrier stability and reliability of the device is improved. Meanwhile, since a first capacitor (C1) has a short-circuit protection function, and a first resistor (R1) is an unloading resistor for providing a channel for the discharge of the first capacitor (C1) when the device is offline and preventing a high voltage at the input end of the device, the reliability of the device is further improved.