Negative-control-system-based electricity-stealing prevention controller of electric energy metering box

Abstract

The invention relates to a negative-control-system-based electricity-stealing prevention controller of an electric energy metering box. The electricity-stealing prevention controller is used for real-time monitoring of a working state of the electric energy metering box. A micro controller is connected with an RS-485 interface circuit, an electric control lock, an infrared transceiver circuit, a switching value input interface, a switching value output interface, a power circuit, a buzzer, a state indication light emitter, a storage battery and a sensor respectively; the electric control lock controls opening or closing of a metering box door; the switching value input interface acquires the operation of the sensor arranged on the box door and monitors the state of the box door; the switching value output interface produces an output signal so as to actively report he state of the box door; and an alternating-current to direct-current conversion and charging and discharging control circuit is arranged in the power circuit so that stable working power can be provided. By using the negative control system, all-weather, real-time and effective monitoring of the state of the metering box door can be realized under the control of a micro core processor, so that an electricity-stealing phenomenon can be prevented effectively; meanwhile, due to a communication function of the negative control system, repeated investment and comprehensive cost of the system are reduced.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a real-time monitoring device for monitoring the working state of an electric energy metering box and preventing the occurrence of electricity stealing. Background technique [0002] In order to realize the user's electric energy metering, low-voltage metering boxes are installed at the distribution transformers. In order to prevent users from changing the metering circuit in the metering box without authorization and ensure accurate measurement, the method often used is to lock the metering box, and the lock key is managed by a special manager. When the metering box needs to be maintained, the manager will open the box door. . This method solves the problem of users modifying the metering circuit without authorization to a certain extent, but it also occurs that the user cooperates with the management personnel to open the metering box and modify the metering circuit ...

AI Technical Summary

Problems solved by technology

The reason for this phenomenon is that the keys of many metering boxes are in the hands of management personnel, who are inextricably linked with users, and are prone to various transactions and the phenomenon of using power for personal gain.

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