CN211669528U

CN211669528U - Intelligent energy efficiency acquisition circuit

Info

Publication number: CN211669528U
Application number: CN202020285934.5U
Authority: CN
Inventors: 李永辉; 文裕涛; 吴全文; 黄凯杰
Original assignee: Huzhou Tailun Electric Power Automation Engineering Co ltd
Current assignee: Huzhou Tailun Electric Power Automation Engineering Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-13
Anticipated expiration: 2030-03-10

Abstract

An intelligent efficiency acquisition circuit belongs to the technical field of energy consumption monitoring. The utility model comprises a control panel circuit and a collecting panel circuit, wherein the control panel circuit comprises a controller chip, a download debugging interface, a first power supply switching circuit, a display screen circuit, a signal lamp circuit, a key circuit, a power processing circuit and a reset circuit, which are electrically connected with the controller chip respectively; the acquisition board circuit comprises a relay, an external communication circuit, a pulse detection circuit, a sampling circuit, a second power supply conversion circuit and a plurality of plug terminals, the acquisition board circuit is electrically connected to the control board circuit through the plug terminals, and the sampling circuit comprises a plurality of series-connected voltage reduction resistors and an isolation module. The utility model has the advantages of simple and reasonable structure, the suitability is strong, can filter most harmonics, reduces the interference, ensures monitoring result's accuracy.

Description

Intelligent energy efficiency acquisition circuit

Technical Field

The utility model relates to an energy consumption monitoring technology field especially relates to an intelligence efficiency acquisition circuit.

Background

Under the current great trend of advocating energy conservation, emission reduction, consumption reduction and efficiency improvement, certain large-scale energy-consuming enterprises in China continue to spontaneously build an energy consumption data real-time monitoring and query system from the aspects of energy conservation, emission reduction and enterprise cost reduction. In various enterprises in China, energy distribution of each production department cannot be coordinated at the same time, the comprehensive energy consumption of the enterprises is high, the difficulty in completing the energy-saving target is increased, the energy consumption flow direction cannot be analyzed, and the implicit abnormal conditions are not clear; the analysis and evaluation of energy consumption can not be realized, and no data support is provided for saving energy consumption; in a production field, no efficient and accurate energy consumption data exists; the device status and data cannot be checked in real time; in enterprises with large and dispersed loads, data statistics and sorting work is more complicated, a large amount of working time is occupied, and errors are easily generated. Meanwhile, the power quality of the production and electricity utilization department is low, the current harmonic distortion is very high, the line heat loss and the power factor are too low due to over harmonic, and the utilization rate of the electric energy is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that above-mentioned prior art exists, provide an intelligence efficiency acquisition circuit, its simple structure is reasonable, and the suitability is strong, can filter most harmonic, reduces and disturbs, ensures the accuracy of monitoring result.

The utility model aims at realizing through the following technical scheme:

an intelligent efficiency acquisition circuit comprises a control panel circuit and an acquisition panel circuit, wherein the control panel circuit comprises a controller chip, a download debugging interface, a first power supply conversion circuit, a display screen circuit, a signal lamp circuit, a key circuit, a quantity processing circuit and a reset circuit, wherein the download debugging interface, the first power supply conversion circuit, the display screen circuit, the signal lamp circuit, the key circuit, the quantity processing circuit and the reset circuit are respectively electrically connected to the controller chip; the acquisition board circuit comprises a relay, an external communication circuit, a pulse detection circuit, a sampling circuit, a second power supply conversion circuit and a plurality of plug-in terminals, the acquisition board circuit is electrically connected to the control board circuit through the plug-in terminals, and the sampling circuit comprises a plurality of series-connected voltage reduction resistors and an isolation module.

The utility model discloses mainly gather outside electric quantity data through sampling circuit, partly convert the operating voltage that whole circuit needs to use into, another part is through the electrical connection with control panel circuit, carries out data operation in the chip that uploads to electric quantity processing circuit, then shows through the display screen in the display screen circuit. Wherein, sampling circuit drops external voltage to the standard value that can be utilized by whole circuit through the step-down resistance of a plurality of series connections, and most harmonic is filtered to rethread isolation module, reduces the interference to ensure monitoring result's accuracy.

As the utility model discloses it is preferred, first power conversion circuit one end is passed through the plug terminal electricity is connected to second power conversion circuit, and will the 5V direct current of second power conversion circuit output converts 3.3V direct current into.

As the utility model discloses it is preferred, including normal operating pilot lamp, communication receiving indicator lamp and communication sending indicator lamp in the signal lamp circuit.

Preferably, the step-down resistor is 200k Ω.

As the utility model discloses it is preferred, second power supply converting circuit input A looks voltage, the conversion and export two 5V voltages, input respectively extremely control panel circuit with gather the board circuit.

Preferably, the control chip is an FM33G026 chip.

Preferably, the 19264 dot matrix screen is adopted in the display screen circuit.

The utility model has the advantages that:

1. simple structure is reasonable, and control panel circuit and collection board circuit adopt a plurality of plug terminals to carry out the electricity and connect, the later stage adjustment and the maintenance of being more convenient for.

2. The whole circuit is powered by the collected electric quantity, and does not need to be supported by an extra power supply, so that the applicability is stronger.

3. The sampling circuit utilizes a plurality of series-connected voltage reduction resistors to reduce voltage, most harmonic waves are filtered out through the isolation module, interference is reduced, and accuracy of monitoring results is guaranteed.

Drawings

FIG. 1 is a schematic diagram of a sampling circuit;

FIG. 2 is a schematic diagram of a second power conversion circuit;

FIG. 3 is a schematic diagram of a first power conversion circuit;

FIG. 4 is a schematic diagram of a power processing circuit;

FIG. 5 is a schematic diagram of a controller chip;

FIG. 6 is a schematic diagram of a display circuit;

FIG. 7 is a schematic diagram of a download debug interface;

FIG. 8 is a schematic diagram of the signal lamp circuit;

FIG. 9 is a schematic diagram of a key circuit;

FIG. 10 is a schematic diagram of a reset circuit;

FIG. 11 is a schematic circuit diagram of a relay;

FIG. 12 is a schematic diagram of an external communication circuit;

fig. 13 is a schematic structural diagram of the pulse detection circuit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

An intelligent efficiency acquisition circuit comprises a control panel circuit and an acquisition panel circuit, and is characterized in that the control panel circuit comprises a controller chip, a download debugging interface, a first power supply conversion circuit, a display screen circuit, a signal lamp circuit, a key circuit, a quantity processing circuit and a reset circuit, wherein the download debugging interface, the first power supply conversion circuit, the display screen circuit, the signal lamp circuit, the key circuit, the quantity processing circuit and the reset circuit are respectively electrically connected to the controller chip; the acquisition board circuit comprises a relay, an external communication circuit, a pulse detection circuit, a sampling circuit, a second power supply conversion circuit and a plurality of plug-in terminals, the acquisition board circuit is electrically connected to the control board circuit through the plug-in terminals, and the sampling circuit comprises a plurality of series-connected voltage reduction resistors and an isolation module.

The working principle is as follows: the sampling circuit collects external electric quantity data, one part of the external electric quantity data is converted into working voltage required by the whole circuit for use, the other part of the external electric quantity data is uploaded to a chip of the electric quantity processing circuit through electrical connection with the control panel circuit to perform data operation, and then the data operation is displayed through a display screen in the display screen circuit.

Specifically, as shown in fig. 1, the sampling circuit includes 3 branches, each branch reduces the external voltage to a standard value that can be utilized by the whole circuit through 5 series 200k Ω step-down resistors, and most harmonics are filtered out through the isolation modules PT1, PT2, and PT3, so as to reduce interference, thereby ensuring the accuracy of the monitoring result. Then, a part of the external power collected by the sampling circuit is converted into two small voltages of 5V by a second power conversion circuit shown in fig. 2, and the two small voltages are supplied to the control board circuit and the collecting board circuit respectively. Since more voltage is needed for the control board circuit, the voltage of 5V is further converted into a voltage of 3.3V by the first power conversion circuit shown in fig. 3, and the converted voltage is supplied to each part of the control board circuit. The other part of the external electric quantity collected by the sampling circuit is transmitted to the electric quantity processing circuit shown in fig. 4, the IM3316 three-phase electric energy metering core board in the electric quantity processing circuit is used for calculating the received electric quantity data so as to obtain more electric quantity related information, then the calculation result is uploaded to the controller chip shown in fig. 5, the controller chip specifically adopts an FM33G026 chip and is integrated with multiple functions, for example, various analyses are performed on the received electric quantity data, and then the analysis result is displayed through a 19264 dot matrix screen in the display screen circuit shown in fig. 6.

In addition, programs with different functions can be programmed into the controller chip and the program functions in the control chip can be debugged through the download debugging interface shown in fig. 7, so that the serial port is saved.

Conventionally, as shown in fig. 8, the signal lamp circuit includes a RUN indicator lamp, a RX indicator lamp, and a TX indicator lamp. The key circuit is shown in fig. 9 and includes 3 keys, which is convenient for a user to perform simple subjective operations, such as retrieval, setting, etc., on data displayed on a display screen. The reset circuit is mostly used in the case of the dead halt of the whole device as shown in fig. 10, and is generally not used. The relay is standby as shown in fig. 11, and functions can be expanded according to user requirements. The external communication circuit is shown in fig. 12, and is specifically a 485 communication circuit, which is used for communicating with an upper computer or other equipment. The pulse detection circuit is shown in fig. 13 and is used for collecting the number of pulses and calculating the electricity consumption condition.

The above description is only the specific embodiment of the preferred embodiment of the present invention, and this specific embodiment is based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An intelligent energy efficiency acquisition circuit comprises a control panel circuit and an acquisition panel circuit, and is characterized in that the control panel circuit comprises a controller chip, a download debugging interface, a first power supply conversion circuit, a display screen circuit, a signal lamp circuit, a key circuit, a power processing circuit and a reset circuit, wherein the download debugging interface, the first power supply conversion circuit, the display screen circuit, the signal lamp circuit, the key circuit, the power processing circuit and the reset circuit are respectively and electrically connected to the controller chip; the acquisition board circuit comprises a relay, an external communication circuit, a pulse detection circuit, a sampling circuit, a second power supply conversion circuit and a plurality of plug-in terminals, the acquisition board circuit is electrically connected to the control board circuit through the plug-in terminals, and the sampling circuit comprises a plurality of series-connected voltage reduction resistors and an isolation module.

2. The intelligent energy efficiency acquisition circuit according to claim 1, wherein one end of the first power conversion circuit is electrically connected to the second power conversion circuit through the plug terminal, and converts the 5V dc power output by the second power conversion circuit into 3.3V dc power.

3. The intelligent energy efficiency acquisition circuit according to claim 1, wherein the signal lamp circuit comprises a normal operation indicator lamp, a communication receiving indicator lamp and a communication sending indicator lamp.

4. The intelligent energy efficiency acquisition circuit according to claim 1, wherein the voltage reduction resistor is 200k Ω.

5. The intelligent energy efficiency acquisition circuit according to claim 1, wherein the second power conversion circuit inputs an a-phase voltage, converts and outputs two 5V voltages, and inputs the two voltages to the control board circuit and the acquisition board circuit respectively.

6. The intelligent energy efficiency acquisition circuit according to claim 1, wherein the control chip is an FM33G026 chip.

7. The intelligent energy efficiency acquisition circuit according to claim 1, wherein a 19264 dot matrix screen is adopted in the display screen circuit.