CN203191500U

CN203191500U - Multifunctional electrical monitoring early warning device

Info

Publication number: CN203191500U
Application number: CN201320084176.0U
Authority: CN
Inventors: 蒋正坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-02-21
Filing date: 2013-02-21
Publication date: 2013-09-11
Anticipated expiration: 2023-02-21

Abstract

The utility model relates to a multifunctional electrical monitoring early warning device. The multifunctional electrical monitoring early warning device comprises a phase voltage acquisition circuit, a current signal detection circuit and a one-chip microcomputer control circuit. An output signal of the phase voltage acquisition circuit is transmitted to an overvoltage comparison circuit and an undervoltage comparison circuit separately, an output signal of the current signal detection circuit is transmitted to an A/D switching circuit, and the output signals of the overvoltage comparison circuit, the undervoltage comparison circuit and the A/D switching circuit are transmitted to the one-chip microcomputer control circuit; an output signal of the one-chip microcomputer control circuit is sent to a wireless transmitting alarm circuit, and an output signal of the wireless transmitting alarm circuit is sent to a wireless receiving alarm circuit. According to the utility model, and when the faults, such as overload, short-circuit, overvoltage, undervoltage, etc., occur in a power supply circuit, the one-chip microcomputer control circuit judges firstly, and then the wireless transmitting alarm circuit sends the alarm information to the wireless receiving alarm circuit, so that the wireless remote control early warning is realized, and the operators on duty are noticed to process the accident.

Description

Multifunctional electric monitoring and warning device

Technical field

The utility model relates to a kind of prior-warning device, particularly be a kind of multifunctional electric monitoring and warning device.

Background technology

When supply line occurs disconnected zero or when overload, short circuit, overvoltage, fault such as under-voltage, will cause electrical fire.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of multifunctional electric monitoring and warning device is provided.

The technical scheme that its technical matters that solves the utility model adopts is: multifunctional electric monitoring and warning device, comprise the phase voltage Acquisition Circuit, current signal detection circuit and single chip machine controlling circuit, the output signal of described phase voltage Acquisition Circuit is transferred to superpotential comparator circuit and under-voltage comparator circuit respectively, the output signal of described current signal detection circuit is transferred to the A/D data converting circuit, described superpotential comparator circuit, the output signal of under-voltage comparator circuit and A/D data converting circuit is sent to single chip machine controlling circuit, the output signal of described single chip machine controlling circuit sends to the wireless transmit warning circuit, and the output signal of described wireless transmit warning circuit sends to the wireless receiving warning circuit.

The transformer BT that the phase voltage loop output terminal that described phase voltage Acquisition Circuit is made of live wire L, zero line N connects gathers signal, and the output signal of described transformer BT sends to voltage stabilizing integration module IC5 through rectification, filtering circuit.

Described current signal detection circuit adopts current transformer L1 to gather signal.

Described wireless transmit warning circuit adopts FDD400 transmitter module IC6.

Described wireless receiving warning circuit is made of JDD400 radio reception demodulation module U1, the LJK00 speech chip U2 and the LM386 power amplification circuit U3 that connect successively.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when overload, short circuit, overvoltage, fault such as under-voltage appear in supply line, the utility model is after single chip machine controlling circuit is judged, send warning message by the wireless transmit warning circuit to the wireless receiving warning circuit, realize the wireless remote early warning, notify the operator on duty to go to the processing accident.

Description of drawings

Fig. 1 is frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model;

Fig. 3 is wireless receiving warning circuit schematic diagram of the present utility model;

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, multifunctional electric monitoring and warning device of the present utility model, comprise phase voltage Acquisition Circuit 1, current signal detection circuit 2 and single chip machine controlling circuit 3, the output signal of described phase voltage Acquisition Circuit 1 is transferred to superpotential comparator circuit 11 and under-voltage comparator circuit 12 respectively, the output signal of described current signal detection circuit 2 is transferred to A/D data converting circuit 21, described superpotential comparator circuit 11, under-voltage comparator circuit 12 is sent to single chip machine controlling circuit 3 with the output signal of A/D data converting circuit 21, the output signal of described single chip machine controlling circuit 3 sends to wireless transmit warning circuit 31, and the output signal of described wireless transmit warning circuit 31 sends to wireless receiving warning circuit 32.

As Fig. 2, shown in Figure 3, described phase voltage Acquisition Circuit 1 is by live wire L, the transformer BT that the phase voltage loop output terminal that zero line N constitutes connects gathers signal, the output signal of described transformer BT is through rectification, filtering circuit sends to voltage stabilizing integration module IC5, by live wire L, zero line N constitutes the phase voltage loop, normal value is at the AC220V state, the secondary output AC voltage of transformer BT is about 8V, through diode D1-D4 bridge rectifier, capacitor C 3, after the C4 filtering, this DC voltage divides two-way to be input to the 1st pin of voltage stabilizing integration module IC5 respectively, handle through the inner voltage stabilizing of voltage stabilizing integration module IC5 that back output 5V power supply is supplied with local circuit and for comparer IC2 provides the reference comparison voltages value, another road is input to the in-phase end of comparer IC2 through potentiometer W2 adjustment.As live wire L, zero line N constitutes the phase voltage loop, magnitude of voltage is when AC280V, its secondary output AC voltage is about 11V, export through rectification, potentiometer W2 is input to the 3rd of comparer IC2 after adjusting, 6 pin, with the 2nd of comparer IC2,5 pin carry out voltage ratio, the 5th of comparer IC2,6,7 pin and peripheral cell are formed the superpotential comparator circuit, by comparer IC2 the 2nd, 3, groups such as 1 pin and resistance R 1 are at the under-voltage comparator circuit, when the 2nd pin of comparer IC2 is lower than its 3rd pin voltage, be judged as under-voltage, the upset of comparer IC2 internal circuit, its the 1st pin output high level signal, when the 6th pin voltage of comparer IC2 during greater than its 5th pin voltage reference value, comparer IC2 interior overturn, by its 7th pin output high level signal, this signal is input to the 33rd pin of single-chip microcomputer IC1 through resistance R 3 current limlitings, after the identification of single-chip microcomputer IC1 internal processes is judged, sends control signal, be input to FDD400 transmitter module IC6 through electric capacity 2C1, by carrier frequency being modulated outwards emission of back.Described wireless receiving warning circuit 32 is by the JDD400 radio reception demodulation module U1 that connects successively, LJK00 speech chip U2 and LM386 power amplification circuit U3 constitute, after JDD400 radio reception demodulation module U1 receives the next alerting signal of FDD400 transmitter module IC6 emission, amplify by JDD400 radio reception demodulation module U1 is inner, demodulation, after removing carrier frequency, with alerting signal after triode Q2 does preposition amplification, being input to LM386 power amplification circuit U3 audio power again through LJK00 speech chip U2 output audio signal amplifies, send audio alert by loudspeaker Y at last, illustrate that being in supply line is in overvoltage or under-voltage phenomenon.

Described current signal detection circuit 2 adopts current transformer L1 to gather signal, when phase line is passed current transformer L1 and is had electric current to pass through, the secondary two ends of current transformer L1 produce the ac induction voltage signal, after potentiometer W adjusts, diode D5 is rectified into d. c. voltage signal, be input to the 2nd pin of A/D data conversion module IC3, through the 5th of A/D data conversion module IC3,6,7 pin and single-chip microcomputer IC1 the 35th, 36,37 pin are formed datel circuit, when the current signal of current transformer L1 induction during greater than setting value, read the A/D translation data signal of A/D data conversion module IC3 through single-chip microcomputer IC1, read signal with 10ms speed, after single-chip microcomputer IC1 internal processes reads identification, send control signal, through single-chip microcomputer IC1 internal processes control output signal, be input to FDD400 transmitter module IC6 through electric capacity 2C1, by carrier frequency being modulated outwards emission of back.Described wireless receiving warning circuit 32 is by the JDD400 radio reception demodulation module U1 that connects successively, LJK00 speech chip U2 and LM386 power amplification circuit U3 constitute, after JDD400 radio reception demodulation module U1 receives the next alerting signal of FDD400 transmitter module IC6 emission, amplify by JDD400 radio reception demodulation module U1 is inner, demodulation, after removing carrier frequency, with alerting signal after triode Q2 does preposition amplification, be input to LM386 power amplification circuit U3 audio power again through LJK00 speech chip U2 output audio signal and amplify, send audio alert by loudspeaker Y at last.

Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. Multifunctional electrical monitoring and early warning device is characterized in that: comprise phase voltage acquisition circuit (1), current signal detection circuit (2) and single-chip microcomputer control circuit (3), the output signal of described phase voltage acquisition circuit (1) respectively Transmitted to overvoltage comparison circuit (11) and undervoltage comparison circuit (12), the output signal of described current signal detection circuit (2) is transmitted to A/D data conversion circuit (21), and described overvoltage comparison circuit (11 ), the output signal of the undervoltage comparison circuit (12) and the A/D data conversion circuit (21) is sent to the single-chip microcomputer control circuit (3), and the output signal of the single-chip microcomputer control circuit (3) is sent to the wireless emission alarm circuit (31 ), the output signal of the wireless transmitting alarm circuit (31) is sent to the wireless receiving alarm circuit (32).

2. The multifunctional electrical monitoring and early warning device according to claim 1, characterized in that: said phase voltage acquisition circuit (1) is composed of live wire L, neutral line N, and the transformer BT acquisition signal connected to the phase voltage loop output end, The output signal of the transformer BT is sent to the voltage stabilizing integrated module IC5 through a rectification and filtering circuit.

3. The multifunctional electrical monitoring and early warning device according to claim 1, characterized in that: the current signal detection circuit (2) uses a current transformer L1 to collect signals.

4. The multifunctional electric monitoring and early warning device according to claim 1, characterized in that: the wireless transmitting alarm circuit (31) adopts FDD400 transmitting module IC6.

5. multifunctional electrical monitoring and early warning device according to claim 4, is characterized in that: described wireless receiving alarm circuit (32) is connected successively by JDD400 radio receiving demodulation module U1, LJK00 voice chip U2 and LM386 power amplifying circuit U3 constitutes.