Anti-electricity stealing automatic detection circuit module
A technology of automatic detection and anti-theft electricity, applied in the direction of measuring devices, measuring electrical variables, measuring time integration, etc., can solve the problems of poor security, poor reliability, misjudgment, etc., and achieve strong security, high degree of automation, and electricity theft. Determine accurate and reliable effects
Inactive Publication Date: 2009-11-04
NANTONG UNIVERSITY
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Problems solved by technology
However, the defect of this improvement is that when there are some external interference factors, misjudgment will occur, the reliability is poor, and the security is also poor.
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[0027] The present invention will be further described below in conjunction with drawings and embodiments.
[0028] The block diagram of the circuit module of the present invention is as figure 1 As shown, it is mainly composed of a comparator circuit module, an RC oscillator circuit module, a digital logic circuit module and a drive circuit unit module, and the above modules are integrated on an integrated circuit chip. The comparator circuit module converts the output signal F3 of the meter coil into a pulse signal and transmits it to the input terminal of the digital logic circuit module. The oscillator circuit module generates a clock signal and transmits it to the input terminal of the digital logic circuit module. The above two input signals generate a carry signal and judge whether the meter is working normally. When electricity theft occurs, the output terminal outputs an electricity theft alarm signal, and the driving circuit module drives the alarm device according ...
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The invention relates to an anti-electricity stealing automatic detection circuit module, which comprises a compactor circuit module which converts an output signal of an electric energy meter coil into a pulse signal; an oscillatory circuit module which generates a clock signal; a digital logic circuit module which acquires a carry signal according to the clock signal and the pulse signal and judges whether the electric energy meter works normally according to the carry signal; and a driving circuit module which drives an alarming device to give an alarm according to an output signal of the digital logic circuit module when the electric energy meter is in abnormal work state. The anti-electricity stealing automatic detection circuit module acquires a corresponding pulse carry signal through a compactor unit and a digital logic circuit according to different signals generated when electric energy meter induction coils work normally or when electricity stealing occurs, judges whether the electric energy meter is in a normal work state or an electricity stealing state according to the generated carry signal, is high in automation, can avoid misjudgment aroused by an interfering signal, has high safety due to the arrangement in the electric energy meter and capacity of recording fault information, and can forcefully fight against and control electricity stealing behaviors.
Description
technical field [0001] The invention relates to a circuit module for automatically detecting and identifying electric signals, in particular to an anti-theft electricity automatic detection module. Background technique [0002] The traditional anti-stealing method is mainly to use a special metering cabinet (box) plus a lead seal. Such as: seal the ordinary lead seal on the meter box cover, the junction box and the metering cabinet (box) door. This common lead sealing method is not only easy to be counterfeited, but also easy to be restored by electricity thieves after opening it. [0003] Therefore, according to the situation that the above-mentioned lead seals are easy to be counterfeited and easily restored after opening, anti-counterfeiting and tamper-proof lead seals designed for poor tamper-proof ability have been developed. The wording of the power supply company is printed on it, which is clearly marked, and there is a lead seal number, the number at the time of in...
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Inventor 景为平谢峰张威
Owner NANTONG UNIVERSITY