CN205103393U - Resident's power consumption contrastive analysis device - Google Patents

Abstract

The utility model provides a comparison and analysis device for residential electricity consumption, which includes an open current transformer, a current sampling circuit, a voltage sampling circuit, an A/D conversion circuit, a central processing unit, a Bluetooth module, a wireless communication module, an RS485 interface, and a pulse acquisition interface. . The open current transformer is installed on the incoming line where the residential meter is connected to the residential electric load. The open current transformer is connected to the A/D conversion circuit through the current sampling circuit, and the voltage sampling circuit is connected to the A/D conversion circuit. A/D The conversion circuit, the bluetooth module, the wireless communication module, the RS485 interface, and the pulse acquisition interface are respectively connected to the central processing unit, and the RS485 interface and the pulse acquisition interface are used to connect with the RS485 interface and the pulse acquisition interface of the resident electric meter. The utility model can conveniently judge the accuracy of the measurement data of the electric meter, carry out on-site inspection on the electric meter in time, and analyze the electricity consumption process of residents by using the recorded electricity consumption data.

Description

Residential electricity consumption comparison analysis device

technical field

The utility model relates to a comparative analysis device for residential electricity consumption.

Background technique

Existing residents often have objections to the accuracy of the meter in the usual electricity consumption process, so they often complain to the power supply company to request the meter to be re-calibrated or replaced with a new one. The main reason is that there is no suitable way for the residents to Calibration and comparison of household electricity meters cannot be done in a timely and convenient manner. For power supply companies, it is also impossible to monitor the abnormality of residents' electricity consumption and the quality of power supply in a timely manner.

Contents of the invention

Aiming at the above-mentioned deficiencies of the prior art, the utility model provides a comparative analysis device for residential electricity consumption, which can measure and monitor the residential electricity consumption without changing the residential electricity circuit, and can conveniently determine the accuracy of the measurement data of the electric meter. Accuracy, timely on-site inspection of the meter, and help the power supply department to monitor the quality of power supply at the end of the grid.

A comparison and analysis device for residential electricity consumption, including an open current transformer, a current sampling circuit, a voltage sampling circuit, an A/D conversion circuit, a central processing unit, a Bluetooth module, a wireless communication module, an RS485 interface, a pulse acquisition interface, and an open current mutual inductance The device is installed on the incoming line where the residential meter is connected to the residential power load to detect the current signal of the actual residential power. The voltage sampling circuit is used to detect the voltage signal of the mains power. The open current transformer is connected through the current sampling circuit. A/D conversion circuit, voltage sampling circuit is connected with A/D conversion circuit, A/D conversion circuit, bluetooth module, wireless communication module, RS485 interface, pulse acquisition interface are respectively connected with central processing unit, RS485 interface and pulse acquisition interface are used It is used to connect with the RS485 interface and the pulse acquisition interface of the residential electric meter.

The comparative analysis device for residential electricity consumption as described above also includes a display and a memory connected to the central processing unit.

The residential electricity comparison and analysis device as described above also includes a rectification and filtering circuit, a battery charging and discharging circuit and a battery that are connected in sequence. Charge the battery, which is connected to the central processing unit for power supply.

The utility model has the following advantages:

1. Using the open current transformer, it is possible to install a residential power analysis and comparison device without changing the residential power wiring or power outage, and to measure and monitor the residential power consumption. At the same time, it has an RS485 interface and a pulse acquisition interface. Through Read the measurement data and pulse signal of the electric meter, and compare it with the measurement data of the device itself, so as to judge the accuracy of the measurement of the residential electric meter and realize the inspection of the electric meter;

2. With Bluetooth interface, resident users can use their smart phones to easily obtain their own electricity consumption data, understand their own electricity consumption process and use this data to understand their own electricity consumption process and habits, so as to optimize their own electricity consumption behavior and achieve energy saving purpose of electricity;

3. Through the wireless communication module, it can be connected to the management platform of the energy management department or the power company, so that the energy management department can monitor the real-time data collection and recording, and achieve the purpose of monitoring the power supply quality at the end of the power grid.

Description of drawings

Fig. 1 is the connection schematic diagram when the residential electricity contrast analysis device of the utility model works;

Fig. 2 is a schematic diagram of the circuit structure of the residential electricity consumption contrast analysis device of the utility model.

In the figure: 1—opening current transformer, 2—current sampling circuit, 3—voltage sampling circuit, 4—A/D conversion circuit, 5—central processing unit, 6—Bluetooth module, 7—wireless communication module, 8—display , 9—memory, 10—RS485 interface, 11—pulse acquisition interface, 12—rectification and filtering circuit, 13—battery charging and discharging circuit, 14—battery.

detailed description

The technical solution in the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the utility model.

Please refer to Figure 1 and Figure 2, the utility model provides a comparative analysis device for residential electricity consumption, including an open current transformer 1, a current sampling circuit 2, a voltage sampling circuit 3, an A/D conversion circuit 4, a central processing unit 5, Bluetooth module 6, wireless communication module 7, display 8, memory 9, RS485 interface 10, pulse acquisition interface 11.

The open current transformer 1 is installed on the incoming line of the residential electricity meter connected to the residential electricity load to detect the current signal of the actual residential electricity, and the voltage sampling circuit 3 is connected to the mains to detect the voltage signal of the mains , the opening current transformer 1 is connected to the first signal input end of the A/D conversion circuit 4 through the current sampling circuit 2, and the signal output end of the voltage sampling circuit 3 is connected with the second signal input end of the A/D conversion circuit 4, A The signal output terminal of /D conversion circuit 4 is connected with central processing unit 5, bluetooth module 6, wireless communication module 7, display 8, memory 9, RS485 interface 10, pulse collection interface 11 are connected with central processing unit 5 respectively, wherein RS485 interface 10 and the pulse acquisition interface 11 are used to connect with the RS485 interface and the pulse acquisition interface of the resident electric meter, so as to collect the metering data and pulse signal of the resident electric meter. Through the A/D conversion circuit 4, the secondary side voltage and current can be accurately collected, analyzed, and calculated, and the various data recorded are stored in the memory 9, and the central processing unit 5 can adopt a high-speed 32-bit embedded processor .

The utility model can also include a rectifying and filtering circuit 12, a battery charging and discharging circuit 13 and a battery 14 connected in sequence, and the battery 14 is connected with modules such as the central processing unit 5 and the display 8 to realize power supply, and the rectifying and filtering circuit 12 will access the commercial power After rectification and filtering, it is provided to the battery charging and discharging circuit 13, and the battery charging and discharging circuit 13 charges the battery 14, so as to realize the purpose of online power supply and ensure the normal operation of the device. Modules such as central processing unit 5, display 8 also can adopt dry battery to supply power.

As shown in Figure 1, the residential electricity consumption analysis and comparison device of the utility model is installed next to the residential electricity meter, can share the same power supply, and use the built-in opening current transformer 1 to obtain the user's current signal to measure and monitor the residential electricity consumption. monitoring, and will not change the residential power lines. This device is connected to the residential electric meter through the RS485 interface 10 and the pulse acquisition interface 11. It can read the metering data and pulse signal of the meter, and compare it with the metering data of the device itself. Judging the accuracy of meter measurement by residents, so that on-site inspections can be carried out for meters that residential users have objections to electricity metering.

The memory 9 can adopt a large-capacity FLASH memory, which is used to store historical data in the process of electricity consumption by residents. Residents can use smart phones to obtain real-time and historical electricity consumption data through the Bluetooth module 6 in this device, and use this data to understand their own electricity consumption. Electricity usage process and habits, in order to optimize one’s own electricity consumption behavior and achieve the purpose of saving electricity; in addition, this device can be connected to the management platform of the energy management department or the power company through the wireless communication module 7 (such as a GPRS module), so that energy management The department can monitor the real-time collected data and recorded data to achieve the purpose of monitoring the power supply quality at the end of the power grid.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any skilled person in the technical field can easily think of changes within the technical scope disclosed in the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (3)

1. A comparison and analysis device for residential electricity consumption, characterized in that: comprising an open current transformer (1), a current sampling circuit (2), a voltage sampling circuit (3), an A/D conversion circuit (4), a central processing unit (5), Bluetooth module (6), wireless communication module (7), RS485 interface (10), pulse acquisition interface (11), and open current transformer (1) are installed on the incoming line where the residential electric meter is connected to the residential electric load On the line, it is used to detect the current signal of the actual residential electricity consumption, the voltage sampling circuit (3) is used to detect the voltage signal of the mains power, and the open current transformer (1) is connected to the A/D conversion circuit through the current sampling circuit (2) (4), voltage sampling circuit (3) is connected with A/D conversion circuit (4), A/D conversion circuit (4), bluetooth module (6), wireless communication module (7), RS485 interface (10), pulse The collection interface (11) is respectively connected with the central processing unit (5), and the RS485 interface (10) and the pulse collection interface (11) are used for connecting with the RS485 interface and the pulse collection interface of the resident electric meter. 2. The comparative analysis device for residential electricity consumption according to claim 1, further comprising a display (8) and a memory (9) connected to the central processing unit (5). 3. The comparative analysis device for residential electricity consumption as claimed in claim 1, characterized in that: it also includes a rectification and filtering circuit (12), a battery charging and discharging circuit (13) and a battery (14) connected in sequence, and the rectification and filtering circuit (12) ) provides the battery charging and discharging circuit (13) after rectifying and filtering the connected commercial power, the battery charging and discharging circuit (13) charges the battery (14), and the battery (14) is connected with the central processing unit (5) to realize power supply.