CN217007658U - Electric energy meter detection circuit - Google Patents
Electric energy meter detection circuit Download PDFInfo
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- CN217007658U CN217007658U CN202220499652.4U CN202220499652U CN217007658U CN 217007658 U CN217007658 U CN 217007658U CN 202220499652 U CN202220499652 U CN 202220499652U CN 217007658 U CN217007658 U CN 217007658U
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- electric energy
- energy meter
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- photoelectric coupler
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Abstract
The utility model discloses an electric energy meter detection circuit which comprises a photoelectric coupler, wherein the first input end of the photoelectric coupler is connected with the N end of an electric energy meter, and the second input end of the photoelectric coupler is connected with the L end of the electric energy meter; a diode D1, a resistor R1 and a resistor R2 are sequentially connected between the L end of the electric energy meter and the photoelectric coupler, one end of a capacitor C1 is connected between the resistor R1 and the resistor R2, and the other end of the capacitor C1 is connected between the N end of the electric energy meter and the first input end of the photoelectric coupler; the signal output end of the photoelectric coupler is connected with the processor, and the signal output end is connected with the processor through a resistor R3 and a power supply voltage; the N end and the L end of the electric energy meter are both provided with temperature sensor probes, and the temperature sensor probes are electrically connected with the processor through the data processing module. The scheme utilizes the half-wave rectification principle of the photoelectric coupling switch, has simple structure, convenient use and almost no power consumption, reduces the power consumption of the whole electric energy meter, and is favorable for energy conservation and consumption reduction.
Description
Technical Field
The utility model relates to the technical field of electric energy meter safety, in particular to an electric energy meter detection circuit.
Background
The electric energy representation is a metering tool for counting the electricity consumption of users, and has the characteristics of stable and reliable performance, long service life, small volume, convenient programming, multiple purposes of one meter and the like. With the rapid development of economy in China, the demand of various industries on electricity is increasing, and the management and control of electric energy through metering data of an electric energy meter are more and more important. In the use process of the electric energy meter, the electric meter terminal is connected with high voltage and large current, and if the terminal breaks down, high-temperature meter burning is easily caused, and the electric meter is damaged. The safe use of the electric energy meter is not only related to the normal operation of a power grid system but also related to the safety problem of people's lives and properties, and the temperature of the terminal needs to be detected in the use process. After the electric energy meter sends the power-on and power-off command, information such as whether the electric energy meter correctly acts and whether the current state is consistent with the control state needs to be obtained.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the electric energy meter detection circuit with a simple structure.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
the detection circuit of the electric energy meter comprises a photoelectric coupler, wherein a first input end of the photoelectric coupler is connected with the N end of the electric energy meter, and a second input end of the photoelectric coupler is connected with the L end of the electric energy meter; a diode D1, a resistor R1 and a resistor R2 are sequentially connected between the L end of the electric energy meter and the photoelectric coupler, one end of a capacitor C1 is connected between the resistor R1 and the resistor R2, and the other end of the capacitor C1 is connected between the N end of the electric energy meter and the first input end of the photoelectric coupler; the signal output end of the photoelectric coupler is connected with the processor, and the signal output end is connected with the processor through a resistor R3 and a power supply voltage; the N end and the L end of the electric energy meter are both provided with temperature sensor probes, and the temperature sensor probes are electrically connected with the processor through the data processing module.
Further, the data processing module comprises a temperature signal amplifier connected with the temperature sensor probe, and the temperature signal amplifier is electrically connected with the processor through a digital-to-analog converter.
Furthermore, the display screen module is further included and electrically connected with the processor.
Further, the wireless transmission module is further included and electrically connected with the processor.
Furthermore, the intelligent alarm system also comprises an alarm flashing light which is electrically connected with the processor.
The utility model has the beneficial effects that: the state of the electric energy meter is detected through the photoelectric coupling switch, and a detection signal is output to the processor through the signal output end; when the electric energy meter is powered on and closed, the output is positive half cycle of sine wave of alternating current, the diode D1 is conducted, the current is connected into the circuit through the L end, the photoelectric coupler is conducted at the moment, the voltage of the signal output end is low level, and accordingly the state of the electric energy meter can be judged to be closed; in the negative half cycle of sine wave of alternating current, the diode D1 is cut off, no current flows through the circuit, and no power consumption is generated, so that the overall power consumption of the electric energy meter is reduced. When the electric energy meter is disconnected, the two input ends of the photoelectric coupler have no current, the output end is equivalently disconnected, the voltage of the signal output end is high level, and the electric energy meter can be judged to be in a disconnected state at the moment.
The scheme utilizes the half-wave rectification principle of the photoelectric coupling switch, has simple structure, convenient use and almost no power consumption, reduces the power consumption of the whole electric energy meter, and is favorable for energy conservation and consumption reduction. Simultaneously, carry out real-time detection to the port temperature of electric energy meter through the temperature sensor probe, through establishing wireless transmission channel, transmit the surveillance center of transformer substation to the result that detects, make things convenient for the surveillance center to get rid of the trouble fast, when breaking down, accessible warning flashing lamp reports to the police in the ammeter case, convenient in time discovery when maintaining.
Drawings
Fig. 1 is a circuit diagram of a detection circuit of an electric energy meter.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model as defined and defined in the appended claims, and all matters produced by the utility model using the inventive concept are protected.
As shown in fig. 1, the electric energy meter detection circuit of the present scheme includes a photocoupler, a first input end of the photocoupler is connected with the N end of the electric energy meter, and a second input end of the photocoupler is connected with the L end of the electric energy meter; a diode D1, a resistor R1 and a resistor R2 are sequentially connected between the L end of the electric energy meter and the photoelectric coupler, one end of a capacitor C1 is connected between the resistor R1 and the resistor R2, and the other end of the capacitor C1 is connected between the N end of the electric energy meter and the first input end of the photoelectric coupler; the signal output end of the photoelectric coupler is connected with the processor, and the signal output end is connected with the processor through a resistor R3 and a power supply voltage; the N end and the L end of the electric energy meter are both provided with temperature sensor probes, and the temperature sensor probes are electrically connected with the processor through the data processing module.
The state of the electric energy meter is detected through the photoelectric coupling switch, and a detection signal is output to the processor through the signal output end. Meanwhile, the port temperature of the electric energy meter is detected in real time through the temperature sensor probe, and damage caused by overheating of an output port of the electric energy meter is avoided.
When the electric energy meter is powered on and closed, the output is positive half cycle of sine wave of alternating current, the diode D1 is conducted, the current is connected into the circuit through the L end, the photoelectric coupler is conducted at the moment, the voltage of the signal output end is low level, and accordingly the state of the electric energy meter can be judged to be closed; in the negative half cycle of sine wave of alternating current, the diode D1 is cut off, no current flows through the circuit, and no power consumption is generated, so that the overall power consumption of the electric energy meter is reduced. When the electric energy meter is disconnected, the two input ends of the photoelectric coupler have no current, the output end is equivalently disconnected, the voltage of the signal output end is high level, and the electric energy meter can be judged to be in a disconnected state at the moment.
The data processing module comprises a temperature signal amplifier connected with the temperature sensor probe, and the temperature signal amplifier is electrically connected with the processor through a digital-to-analog converter. The acquired temperature signals are processed and amplified through the temperature signal amplifier and the digital-to-analog converter and transmitted to the processor, so that the detection precision is ensured.
The intelligent alarm system is characterized by further comprising a display screen module, a wireless transmission module and an alarm flashing lamp, wherein the alarm flashing lamp, the display screen module and the wireless transmission module are all electrically connected with the processor. The display screen module can show real-time testing result to when breaking down, through warning flashing lamp in the ammeter case, the suggestion maintainer, establish wireless signal transmission passageway through wireless transmission module, transmit the surveillance center of transformer substation to the result that detects, make things convenient for the surveillance center to get rid of the trouble fast, when breaking down, in time send out the staff and overhaul.
While there have been shown and described what are at present considered to be the basic principles and essential features of the utility model and advantages thereof, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, but is capable of other embodiments without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The electric energy meter detection circuit is characterized by comprising a photoelectric coupler, wherein a first input end of the photoelectric coupler is connected with an N end of an electric energy meter, and a second input end of the photoelectric coupler is connected with an L end of the electric energy meter; a diode D1, a resistor R1 and a resistor R2 are sequentially connected between the L end of the electric energy meter and the photoelectric coupler, one end of a capacitor C1 is connected between the resistor R1 and the resistor R2, and the other end of the capacitor C1 is connected between the N end of the electric energy meter and the first input end of the photoelectric coupler; the signal output end of the photoelectric coupler is connected with the processor, and the signal output end is connected with the processor through a resistor R3 and a power supply voltage; the N end and the L end of the electric energy meter are both provided with temperature sensor probes, and the temperature sensor probes are electrically connected with the processor through the data processing module.
2. The electric energy meter detection circuit according to claim 1, wherein the data processing module comprises a temperature signal amplifier connected to the temperature sensor probe, and the temperature signal amplifier is electrically connected to the processor through a digital-to-analog converter.
3. The electric energy meter detection circuit of claim 1, further comprising a display screen module, the display screen module being electrically connected to the processor.
4. The electric energy meter detection circuit of claim 1, further comprising a wireless transmission module electrically connected to the processor.
5. The electric energy meter detection circuit of claim 1, further comprising an alarm flashing light, the alarm flashing light being electrically connected to the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220499652.4U CN217007658U (en) | 2022-03-09 | 2022-03-09 | Electric energy meter detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220499652.4U CN217007658U (en) | 2022-03-09 | 2022-03-09 | Electric energy meter detection circuit |
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| Publication Number | Publication Date |
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| CN217007658U true CN217007658U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220499652.4U Active CN217007658U (en) | 2022-03-09 | 2022-03-09 | Electric energy meter detection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117590067A (en) * | 2024-01-16 | 2024-02-23 | 四川中威能电力科技有限公司 | Energy-saving intelligent ammeter and data analysis system |
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2022
- 2022-03-09 CN CN202220499652.4U patent/CN217007658U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117590067A (en) * | 2024-01-16 | 2024-02-23 | 四川中威能电力科技有限公司 | Energy-saving intelligent ammeter and data analysis system |
| CN117590067B (en) * | 2024-01-16 | 2024-03-29 | 四川中威能电力科技有限公司 | Energy-saving intelligent ammeter and data analysis system |
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