CN202352928U - Energy-saving patch board - Google Patents

Abstract

An energy-saving plug-in board, including a power switch, a plurality of power terminals and a housing, the output end of the power switch is connected with an AC/DC conversion module and a microprocessor, and the output end of a self-locking relay is connected with a power consumption monitoring circuit. The input end, the output end of the energy consumption monitoring circuit is connected to the input end of the A/D conversion module, the output end of the A/D conversion module is connected to the input end of the microprocessor, and the output end of the microprocessor is connected to a self-locking relay, The energy consumption monitoring circuit includes a transformer connected in series in the live wire. One end of the transformer is provided with a rectifier, and one end of the rectifier is connected to the positive pole of a polar capacitor. The transformer completes the I/V conversion, and the converted voltage signal becomes a DC voltage through the rectifier. , and use a polar capacitor to filter it, the microprocessor judges the working status of the electrical appliance by collecting the signal, if the electrical appliance is in the standby state, then cut off the self-locking relay, which has the characteristics of simple structure and convenient use.

Description

An energy-saving plug-in board

technical field

The utility model relates to a plug-in board, in particular to an energy-saving plug-in board. the

Background technique

The standby power consumption of the product refers to the power consumption when the product is connected to the power supply and is in a waiting state, but not running its main function. It is basically a waste of energy. According to a social survey by Oxford University, the average household standby energy consumption accounts for 8% of the total power consumption, and the energy consumed by standby in various countries accounts for about 3% to 13% of the total energy consumption. , my country's standby energy consumption is higher than the average level. the

The standby power consumption of commonly used household appliances is: air conditioner 3.47 watts, washing machine 2.46 watts, refrigerator 4.09 watts, microwave oven 2.78 watts, range hood 6.06 watts, rice cooker 19.82 watts, color TV 8.07 watts, video recorder 28 watts, DVD player 13.37 watts, VCD machine 10.97 watts, audio power amplifier 12.35 watts, mobile phone charger 1.34 watts, monitor 7.69 watts, PC host 35.07 watts, fax machine 5.71 watts, printer 9.08 watts. Adding these up, it is equivalent to 4 degrees of electricity consumed by these household appliances a day when they are not working. The total annual standby power consumption is as high as 35.4 billion kWh, which is equivalent to the four-year power generation of Daya Bay Power Station. Expert forecast analysis pointed out that if household electricity is calculated based on the growth of home appliance production and consumption, and assuming that the standby time is only 2 hours a day, by 2012 the accumulative saving of electric energy can reach 116.1 billion kilowatt-hours, consumers can save 66.1 billion yuan in costs, and reduce carbon emissions by 39.4 billion 10,000 tons, reducing nitrogen oxide emissions by 473,000 tons, reducing sulfur dioxide emissions by 61.66 billion tons, and reducing solid particulate matter emissions by 2.88 million tons. the

At present, the power strips on the market cannot recognize the standby state of electrical equipment. When the electrical appliances are in the standby state, energy is wasted. Therefore, reducing standby energy consumption has positive significance for relieving environmental pressure, saving energy and reducing household consumption. the

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an energy-saving plug-in board to monitor its power consumption, and the power P=IV, the voltage is fixed at 220V of the mains, and the current changes with the state of the electrical appliance. , so the current monitoring can be used as the basis for whether there is a load to work. The microprocessor judges the working status of the electrical appliances by collecting signals. the

In order to achieve the above object, the technical solution adopted by the utility model is:

An energy-saving plug-in board includes a power switch, a plurality of power terminals and a housing, the output of the power switch is connected to the input of an AC/DC conversion module, and the output of the AC/DC conversion module is connected to a microprocessor. The power supply terminal is connected, the output terminal of the self-locking relay is connected with the input terminal of the energy consumption monitoring circuit, the output terminal of the energy consumption monitoring circuit is connected with the input terminal of the A/D conversion module, and the output terminal of the A/D conversion module is connected with the The input terminals of the microprocessor are connected, and the output terminals of the microprocessor are connected with the self-locking relay. the

The energy consumption monitoring circuit includes a transformer T connected in series in the live wire, one end of the transformer T is provided with a rectifier D, and one end of the rectifier D is connected to the positive pole of a polarity capacitor C. the

Because the utility model takes the microprocessor as the core, it judges the working state of the electrical appliance by monitoring the change of the current signal, and judges whether the plug board is working in the standby state, so as to cut off the power supply. It has the characteristics of simple structure and convenient use. the

Description of drawings

Fig. 1 is the structure schematic diagram of the utility model. the

Fig. 2 is a schematic diagram of the energy consumption monitoring circuit of the utility model. the

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present utility model are further described. the

Referring to Fig. 1, an energy-saving plug-in board includes a power switch, a plurality of power terminals and a housing, the output of the power switch is connected to the input of the AC/DC conversion module, and the output of the AC/DC conversion module is connected to the The power supply terminal of the microprocessor is connected, the output terminal of the self-locking relay is connected with the input terminal of the energy consumption monitoring circuit, the output terminal of the energy consumption monitoring circuit is connected with the input terminal of the A/D conversion module, and the A/D conversion module The output end of the microprocessor is connected with the input end of the microprocessor, and the output end of the microprocessor is connected with the self-locking relay. the

Referring to FIG. 2 , the energy consumption monitoring circuit includes a transformer T connected in series in the live line, one end of the transformer T is provided with a rectifier D, and one end of the rectifier D is connected to the positive pole of a polarity capacitor C. the

When working, close the power switch of the power strip, the AC/DC conversion module works, and supplies power to the microprocessor. Since the microprocessor can only process voltage signals and cannot directly process current signals, it is necessary to convert current signals into voltage signals to Processing, a transformer with a small secondary number of turns is connected in series on the live line to complete the I/V conversion function. According to the power P=IV, the converted voltage signal V is proportional to the power consumption P of the electrical appliance, but the voltage signal V is The AC signal cannot be directly processed by the microprocessor, so a rectifier is needed to rectify the voltage signal V to become a DC voltage, and at the same time filter it with a polar capacitor, and then input it to the A/D converter of the microprocessor. The microprocessor determines whether the data is in the standby data area according to the A/D conversion result, so as to determine the working state of the electrical appliance. When it is determined that the electrical appliance is in the standby state, the microprocessor sends a signal to the self-locking relay, and the self-locking relay is disconnected. , the entire line is disconnected. the

Claims (5)

1. energy-conservation wiring board; Comprise mains switch, a plurality of supply terminalss and housing is characterized in that; The output of mains switch is connected with the input of AC/DC conversion module; The output of AC/DC conversion module is connected with the power end of microprocessor, and the output of latching relay is connected with the input of energy consumption monitoring circuit, and the output of energy consumption monitoring circuit is connected with the input of A/D modular converter; The output of A/D modular converter is connected with the input of microprocessor, and the output of microprocessor is connected with latching relay.

2. a kind of energy-conservation wiring board according to claim 1; It is characterized in that; Described energy consumption monitoring circuit comprises the instrument transformer (T) that is connected in the live wire, and an end of instrument transformer (T) is provided with rectifier (D), and an end of rectifier (D) connects the positive pole of polar capacitor (C).

3. a kind of energy-conservation wiring board according to claim 2 is characterized in that described instrument transformer (T) is a straight-through current transformer.

4. a kind of energy-conservation wiring board according to claim 2 is characterized in that described rectifier (D) is a full-wave rectifier.

5. a kind of energy-conservation wiring board according to claim 2 is characterized in that described microprocessor is the AVR single-chip microcomputer.

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