CN201364355Y - Intelligent monitoring and control device for electric energy metering box - Google Patents

Abstract

An intelligent monitoring and control device for an electric energy metering box is characterized in that the communication circuit is composed of a GSM communication circuit and an electric energy meter communication circuit capable of reading real-time operation data of the electric energy meter. The single-chip microcomputer is connected with a key reading circuit that can identify and judge the unpacking information through its input and output ports, and the input and output ports of the single-chip microcomputer are also connected with a power-off driver that can automatically cut off the user's power supply after confirming illegal unpacking. circuit. The utility model can not only realize unpacking alarm, but also realize illegal unpacking power-off, record and transmit the original data of electric energy meter operation during illegal unpacking, and can identify maintenance unpacking and illegal unpacking. It is actually an intelligent monitoring and control device for electric energy metering boxes with remarkable anti-theft effect and great social benefits.

Description

Intelligent monitoring and control device for electric energy metering box

technical field

The utility model relates to an anti-stealing electricity control device, in particular to an intelligent monitoring control device for an electric energy metering box capable of monitoring the abnormal opening of the electric energy metering box.

Background technique

Usually, most of the stealing methods used by electricity thieves in some areas of our country are tampering with the electric energy meter or its related metering parts. Even prying open its boxes and other means to steal electricity, coupled with the limited number of power management personnel, it is impossible to conduct regular inspections, even if the box is found to be pried, it is impossible to know who did it, and there is no first-hand evidence, which makes it difficult for the power supply department to fundamentally solve the problem. To prevent the occurrence of power theft. There was once a patent application with the application number 200620021687.8 and the name "wireless mobile unpacking alarm". And the magnet, and use the single-chip microcomputer to carry out alarm control, although it can be timely and intuitively dial the inspector's phone or send a short message to the police through the communication circuit through the communication service provider's network when it is out of the box, and send a signal to the customer through Intenrnet However, it is still impossible to fundamentally eliminate electricity theft and provide relevant departments and personnel with the original data of the electric energy meter when the electricity theft occurs. At the same time, it is also impossible to identify whether it is maintenance or illegal opening. Inconvenience to management and supervision.

Utility model content

The utility model is aimed at the deficiencies in the above-mentioned background technology, and provides a device that can not only realize unpacking alarm, but also realize illegal unpacking, power off, record and transmit the original data of electric energy meter operation during illegal unpacking, and can identify maintainability Intelligent monitoring and control devices for unpacked and illegally unpacked electric energy metering boxes.

The specific solution is: the communication circuit is composed of two parts: the GSM communication circuit and the electric energy meter communication circuit which can read the real-time operation data of the electric energy meter. The single-chip microcomputer is connected with a key reading circuit that can identify and judge the unpacking information through its input and output ports, and an input and output port of the single-chip microcomputer is connected with a device that can automatically cut off the user's power supply after confirming illegal unpacking as a control terminal. Power off the drive circuit.

In addition, the input and output ports of the single-chip microcomputer are connected with a clock circuit that provides time for the device.

Furthermore, the working power supply of the device is provided with a rechargeable battery and a voltage sampling circuit, so that when the AC power changes, the rechargeable battery can maintain the normal operation of the device, and when the working power changes, the voltage sampling circuit feeds back to the The message from the microcontroller puts the device into a power-saving mode.

At the same time, the control switch adopted in the unpacking trigger circuit is a travel switch.

The single-chip microcomputer of the utility model utilizes the information provided by the unpacking trigger circuit to quickly and accurately identify whether it is an illegal unpacking through the key reading circuit. The power-off drive circuit cuts off the power supply, and informs relevant personnel and departments of the unpacking information, especially the real-time operation data of the electric energy meter and the unpacking time, through the communication circuit. Its comprehensive and effective anti-stealing function not only deters criminals who steal electricity, but also effectively prevents the occurrence of electricity theft, and saves a lot of economic losses for the country. It is actually an intelligent monitoring and control device for electric energy metering boxes with remarkable anti-theft effect and great social benefits.

Description of drawings

Fig. 1 is the electrical principle block diagram of the utility model.

Fig. 2 is the schematic circuit diagram of the utility model.

Detailed ways

Among Fig. 1, Fig. 2, what single-chip microcomputer 1 adopts is the microprocessor place U1. The working power supply IX includes a power supply circuit that uses alternating current to be transformed by the transformer T1, rectified, filtered, and stabilized, and a power supply circuit that is only powered by the rechargeable battery BT1 when the alternating current is cut off. At the same time, the working power supply IX also includes A voltage sampling circuit connected to the input and output ports 15 and 16 of the microprocessor U1 and composed of a voltage comparison chip U5 and peripheral circuits is provided. The unpacking trigger circuit VI is connected to the input and output port 9 of the microprocessor U1, and it is mainly composed of a travel switch ST0 that can be arranged on the electric energy metering box. The key reading circuit V is mainly composed of a key holder J3, which is connected with the input and output ports 7, 8 of the microprocessor U1. What adopt in the GSM communication circuit II is short message module U2, wherein, microprocessor U1 carries out ignition start to short message module U2 through input and output port 3, microprocessor U1 exchanges data with short message module U2 through input and output ports 1,2, and , the signal indication circuit in the communication circuit is formed by the light emitting diode D1 and the peripheral circuit. When the network is found, the light emitting diode flashes slowly, otherwise it flashes quickly. At the same time, the short message module U2 is also connected to the SIM card holder J1. Electric energy meter communication circuit III is composed of RS485 interface chip U3 and connection terminal J2 connected to it and providing original data of electric energy meter for it, and exchanges data with it through input and output ports 4 and 5 of microprocessor U1. In the sound and light alarm circuit VII, the sound prompt circuit composed of the speaker LS1 and peripheral circuits is connected to the input and output port 10 of the microprocessor U1. The flash prompt circuit composed of light emitting diode D2 and peripheral circuits is connected to the input and output port 11 of the microprocessor U1. During operation, different sounds from the speaker LS1 and flashes of different frequencies of the light emitting diode D2 illustrate different working states of the device. The power-off driving circuit IV is composed of a relay K1 and peripheral circuits, which are connected through the input and output ports 6 of the microprocessor U1. The clock circuit VIII, which provides time for the whole device and is composed of clock chip U4 and peripheral circuits, is connected with the input and output ports 12, 13, 14 of the microprocessor U1. In the circuit of the device, VCC is the power input terminal.

When in use, the device can be installed in the electric energy metering box. In the working state, when the door of the electric energy metering box is opened, the contact of the travel switch ST0 is closed, and the microprocessor U1 detects the unpacking state, and sends an unpacking alarm to the management center and the attendant through the SMS module U2 in the GSM communication circuit information, and read the real-time operation data of the energy meter through the RS485 interface chip U3 in the communication circuit of the energy meter, and then send it to the management center, and the microprocessor U1 reads the key information through the key reading circuit V within the delay time, And compare it with the stored password, if it cannot be read or read is not the same as the stored password, the microprocessor U1 will send a control pulse to the relay K1 to control the air switch in the electric energy metering box to trip, and cut off the power supply of the main circuit Simultaneously, the sound and light alarm circuit VII reports to the police. Afterwards, the microprocessor U1 continuously reads the key information and sends a disconnection pulse to the relay K1, so that the user cannot restore the power supply by himself, so as to prevent illegal opening of the electric energy metering box to steal electricity. When the power supply manager inserts the supporting key into the key holder J3, the microprocessor U1 reads the password and confirms that it is correct, then turns off the sound and light alarm, and at the same time, stops sending control pulses to the management center and the mobile phone of the on-duty officer. Operation information of the electric security key. At this time, the power supply can be restored manually, and the box door is closed after unplugging the key, and the device returns to a normal state after power failure.

Claims (4)

1, a kind of electrical energy metering tank intellectual monitoring control device, comprise single-chip microcomputer, unpacking trigger circuit by its work of Single-chip Controlling, sound light alarming circuit, communicating circuit and working power, it is characterized in that communicating circuit is made of GSM communicating circuit (II) and electric energy meter communicating circuit (III) two parts of can read the electric energy meter real-time running data, and single-chip microcomputer is by its input/output port (7), (8) be connected with one and can read circuit (V) the key that unpacking information is discerned judgement, and the input/output port of single-chip microcomputer (6) is connected with outage driving circuit (IV).

2, electrical energy metering tank intellectual monitoring control device according to claim 1 is characterized in that single-chip microcomputer is connected with a clock circuit (VIII) by its input/output port (12), (13), (14).

3, electrical energy metering tank intellectual monitoring control device according to claim 1 is characterized in that being provided with in the working power (IX) rechargeable battery (BT1) and voltage sample circuit.

4, electrical energy metering tank intellectual monitoring control device according to claim 1, the middle gauge tap that adopts of trigger circuit (VI) that it is characterized in that unpacking is travel switch (STO).

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