CN204116420U - The electric energy meter of anti-strong magnetic stealing - Google Patents

Abstract

The utility model discloses an electric energy meter for preventing strong magnetic stealing electricity, which comprises a microprocessor MCU; two reed switches connected in parallel are arranged between the Pn1 terminal and the GND terminal of the microprocessor MCU; The reed switch includes a reed switch U1 and a reed switch U2; a terminal resistor R12 is connected to the Pn2 terminal of the microprocessor MCU; one end of the resistor R12 is connected to the Pn2 terminal of the microprocessor MCU; the other end of the resistor R12 It is connected with the cathode of a light-emitting diode LED1, and the anode of the light-emitting diode LED1 is connected with the power supply VCC. The anti-strong magnetic electricity stealing electric energy meter of the utility model has the advantages of enabling the ordinary electric energy meter to have the anti-strong magnetic electric energy stealing function, and can effectively prevent the electric energy meter from under-counting or not measuring electricity due to the interference of an externally strengthened magnetic field.

Description

Anti-strong magnetic stealing electric energy meter

technical field

The utility model relates to an electric energy meter for preventing electricity stealing by strong magnetism.

Background technique

Electricity is an indispensable energy source for industrial and agricultural production and people's daily life. In order to accurately measure electric energy, the power supply department installs electric energy meters on the lines of electric users to charge reasonably. However, driven by interests, a very small number of criminals often tamper with the electric energy meter, causing the electric energy meter to measure less or not to measure, so as to achieve the purpose of stealing electric energy.

In order to reduce the loss of national property and prevent the occurrence of electricity theft, the power supply department puts the electric energy meter in the electric meter box so that criminals cannot touch the electric energy meter. The purpose of stealing electricity on the line of the meter, but it cannot prevent the electricity thief from using other means to steal electricity such as strong magnetic field stealing electricity.

Most of the existing electric energy meters are electronic electric energy meters, and their power supply, voltage and current sampling, etc. are inseparable from electromagnetic components. Cause the energy meter to count slowly or not measure. For example, when a magnet with a strong magnetic field is placed near the low-voltage and current sampling device of the electronic meter, the iron core of the current sampling device will be highly saturated due to the action of the strong magnetic field, and the alternating signal cannot be sensed and sampled, which will cause the energy meter to slow down. or not metered. When a magnet with a strong magnetic field is placed near the power transformer of the electronic meter, the iron core of the transformer will be highly saturated due to the action of the strong magnetic field, resulting in no secondary output of the transformer, causing the power meter to lose power and stop working.

Utility model content

The utility model aims at avoiding the disadvantages of the above-mentioned prior art, and provides an electric energy meter which prevents electricity theft by strong magnetism, so as to prevent criminals from stealing electricity through strong magnetism interference.

The utility model adopts the following technical solutions for solving technical problems.

The watt-hour meter of anti-strong magnetic stealing electricity is characterized in that it includes a microprocessor MCU; two reed switches connected in parallel are arranged between the Pn1 terminal and the GND terminal of the microprocessor MCU; The reed switches connected in parallel include a reed switch U1 and a reed switch U2;

A terminal resistor R12 is connected to the Pn2 terminal of the microprocessor MCU; one end of the resistor R12 is connected to the Pn2 terminal of the microprocessor MCU; the other end of the resistor R12 is connected to the negative pole of a light emitting diode LED1 The anode of the light-emitting diode LED1 is connected to the power supply VCC.

The structural features of the utility model's anti-strong magnetic stealing electric energy meter also lie in:

The light emitting diode LED1 is a red light diode.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

The utility model anti-strong magnetic electricity stealing electric energy meter comprises an ordinary electronic electric energy meter composition (comprising single-phase electric energy meter, three-phase electric energy meter, multifunctional electric energy meter, time-sharing electric energy meter, intelligent electric energy meter), in electric energy One or several dry reed switches connected in parallel are installed on the internal circuit board of the meter. When the stealer applies a strong magnetic field, the reed switch will act, and the alarm light of the electric energy meter will be on, which will be recorded as an event, providing a basis for anti-stealing investigation and replenishment of electricity, and can also be used through the centralized meter reading system or electricity consumption information of power users. The acquisition system uploads the strong magnetic electricity theft event to the main station, so as to investigate and deal with the electricity theft in time, solves the problem that the current electric energy meter cannot prevent strong magnetic interference and electricity theft, and makes the ordinary electronic electric energy meter have the function of anti-strong magnetic electricity theft.

When the electricity thief applies a strong magnetic field to the electric energy meter, the reed switch acts, and the contact of the reed switch is connected to the switch input of the microprocessor MCU of the electric energy meter. After the electric energy meter software detects the abnormal magnetic field, it is regarded as an event Make records, record the time of applying and removing the strong magnetic field, and drive the alarm indicator light of the electric energy meter at the same time. The magnetic field anomaly event record can not only provide a basis for anti-stealing investigation and recovery of electricity, but also upload the magnetic field anomaly event to the main station through the centralized meter reading system or the power user’s electricity information collection system, so as to investigate and deal with theft in time and make ordinary electric energy The watch has the function of anti-strong magnetic stealing electricity.

The anti-strong magnetic electricity stealing electric energy meter of the utility model has the advantages of enabling the ordinary electric energy meter to have the anti-strong magnetic electric energy stealing function, and can effectively prevent the electric energy meter from under-counting or not measuring electricity due to the interference of an externally strengthened magnetic field.

Description of drawings

Fig. 1 is the circuit schematic diagram of the electric energy meter of anti-strong magnetic stealing electricity of the present utility model.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways

Referring to Fig. 1, the watt-hour meter of anti-strong magnetic stealing electricity of the present utility model comprises microprocessor MCU; Between the Pn1 terminal of described microprocessor MCU and the GND terminal, two reed switches connected in parallel are arranged; The two reed switches connected in parallel include a reed switch U1 and a reed switch U2;

A terminal resistor R12 is connected to the Pn2 terminal of the microprocessor MCU; one end of the resistor R12 is connected to the Pn2 terminal of the microprocessor MCU; the other end of the resistor R12 is connected to the negative pole of a light emitting diode LED1 The anode of the light-emitting diode LED1 is connected to the power supply VCC.

The light emitting diode LED1 is a red light diode.

Fig. 1 is the partial circuit diagram of the electric energy meter of anti-strong magnetic stealing electricity of the present utility model.

The utility model anti-strong magnetic electric energy meter comprises an ordinary electronic electric energy meter, a plurality of reed switches, and an alarm indicator light. When the electricity thief applies a strong magnetic field, the alarm indicator light of the electric energy meter lights up, and records it as an event, providing a basis for anti-electricity theft investigation and recovery of electricity. When a power thief applies a strong magnetic field to steal electricity, the strong magnetic electricity theft event recorded by the electric energy meter is uploaded to the main station through the centralized meter reading system or the power user information collection system, so as to investigate and deal with the electricity theft in time.

Install one or several parallel dry reed switches, alarm indicator lights and related software on the internal circuit board of the electric energy meter. When the electricity stealer applies a strong magnetic field outside the box, the reed switch will act, and the microprocessor MCU of the energy meter will detect the strong magnetic field signal, drive the alarm light to light up, and record it as an event, providing anti-theft investigation and power recovery To provide a basis, it is also possible to upload the strong magnetic stealing event to the main station through the centralized meter reading system or the power user's electricity information collection system, so as to investigate and deal with the stealing in time, so that the ordinary electric energy meter has the function of preventing strong magnetic stealing, which can effectively prevent A method of stealing electricity by applying a strong magnetic field to an electric energy meter.

The anti-strong magnetic electricity stealing electric energy meter of the utility model enables the ordinary electric energy meter to have the anti-strong magnetic electric energy stealing function, and can effectively prevent the electric energy meter from under-metering or not measuring electricity due to the interference of an externally strengthened magnetic field. The structure is simple and the production cost is low. , suitable for mass production of energy meter manufacturers.

Combined with Figure 1, when the energy meter manufacturer designs and produces the energy meter, install one or several parallel reed switches on the internal circuit board of the energy meter, modify the relevant software, and use the original alarm light for the alarm indicator. When the electricity thief applies a strong magnetic field to the electric energy meter, the reed switch will act, and the contact of the reed switch will be connected to the switch input of the CPU of the electric energy meter. After the electric energy meter software detects the abnormal magnetic field, it will be recorded as an event. Record the time of applying and removing the strong magnetic field, and drive the alarm indicator light of the electric energy meter at the same time. The magnetic field anomaly event record can not only provide a basis for anti-stealing investigation and recovery of electricity, but also upload the magnetic field anomaly event to the main station through the centralized meter reading system or the power user’s electricity information collection system, so as to investigate and deal with theft in time and make ordinary electric energy The meter has the function of anti-strong magnetic stealing, which can effectively prevent the method of stealing electricity by applying a strong magnetic field to the electric energy meter.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the concept and scope of the present utility model. Under the premise of not departing from the design concept of the present utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the present utility model should fall into the protection scope of the present utility model, and the technology claimed by the utility model The contents are all described in the claims.

Claims (2)

1. the electric energy meter of anti-strong magnetic stealing, is characterized in that, comprise Micro-processor MCV; Two tongue tubes parallel with one another are provided with between the Pn1 terminal and GND terminal of described Micro-processor MCV; Described two tongue tubes parallel with one another comprise tongue tube U1 and tongue tube U2;

The Pn2 terminal of described Micro-processor MCV is connected with a terminal resistance R12; One end of described resistance R12 is connected with the Pn2 terminal of described Micro-processor MCV; The other end of described resistance R12 is connected with the negative pole of a LED 1, and the positive pole of described LED 1 is connected with power supply VCC.

2. the electric energy meter of anti-strong magnetic stealing according to claim 1, it is characterized in that, described LED 1 is red diodes.