Active electricity larceny prevention device and method aiming at magnetic electricity larceny compensation metering
An anti-theft device and active technology, applied in the direction of measurement device, measurement of electric variables, measurement of time integration, etc., can solve problems such as poor timeliness, energy measurement error, difficult verification, etc., to achieve complete and practical noise, reduce test errors, simple structure
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[0042] Such as figure 1 As shown, an active anti-stealing device of the present invention includes a front-end signal acquisition module 1, a stealing judgment and identification module 2, a main control module 3, a communication module 4, a power supply module 5, an output action module 6, and a remote Terminal database 8 (upper computer), etc., in this example for the electric energy meter of the three-phase four-wire system.
[0043] Front-end signal acquisition module 1, install a magnetic sensor (using Hall element) at the CT part of the electric energy meter, install a current and voltage transformer concealed at the user's incoming line to monitor the line current and line voltage, and install an optical switch at the door of the meter box The circuit draws the signal from the electric energy meter to monitor the working state of the electric energy meter, and finally sends the collected signal to the signal conditioning circuit, and the signal conditioning circuit conv...
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