CN203193963U - A photosensitive energy-saving control circuit - Google Patents

Abstract

The utility model relates to a photosensitive energy-saving control circuit, which comprises an ambient light detection circuit, an optocoupler trigger circuit and a drive circuit. The output signal of the ambient light detection circuit is transmitted to the optocoupler trigger circuit, and the output signal of the optocoupler trigger circuit is The utility model adopts the ambient light detection circuit as the photoelectric controller, drives the relay through the optocoupler circuit to switch on or off the load power supply, and achieves the integration of energy saving and control. It has modular design, strong practicability, and simple installation and connection. Etc.

Description

A photosensitive energy-saving control circuit

technical field

The utility model relates to a control circuit, in particular to a photosensitive energy-saving control circuit.

Background technique

Most of the traditional lighting adopts two modes of timing and light control, which can easily cause traffic accidents when the lighting is still not activated during thunderstorms and other dark conditions.

Utility model content

The purpose of the utility model is to overcome the above disadvantages and provide a photosensitive energy-saving control circuit.

The technical solution adopted by the utility model to solve the technical problem is: a light-sensitive energy-saving control circuit, including an ambient light detection circuit, an optocoupler trigger circuit and a drive circuit, the output signal of the ambient light detection circuit is transmitted to the optocoupler trigger circuit , the output signal of the optocoupler trigger circuit is sent to the driving circuit.

The ambient light detection circuit consists of a photoresistor RG connected in series with a potentiometer RP1 as a photoelectric controller.

The photocoupler trigger circuit is composed of a triode VT1 connected to a photocoupler IC.

By adopting the above-mentioned technical scheme, the beneficial effects of the utility model are: the utility model adopts the ambient light detection circuit as the photoelectric controller, drives the relay through the optocoupler circuit to switch on or off the load power supply, and achieves the integration of energy saving and control. It has the advantages of modern design, strong practicability, and simple installation and connection.

Description of drawings

Fig. 1 is a block diagram of the utility model.

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

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1 and Figure 2, a photosensitive energy-saving control circuit of the present utility model includes an ambient light detection circuit 1, an optocoupler trigger circuit 2 and a drive circuit 3, and the output signal of the ambient light detection circuit 1 is transmitted to the light Coupler trigger circuit 2, the output signal of the optocoupler trigger circuit 2 is sent to the drive circuit 3.

The ambient light detection circuit 1 is composed of a photosensitive resistor RG and a potentiometer RP1 connected in series as a photoelectric controller, and the photocoupler trigger circuit 2 is composed of a triode VT1 connected to a photocoupler IC. At night, the controller is placed at the window. The light-receiving surface of the photoresistor RG faces out of the window. Due to the dark ambient light at night, the photosensitive resistor RG has no light exposure, and its resistance value is relatively large. After it is divided with the potentiometer RP1, the current is limited by the resistor R1, so that the triode VT1 is turned on, and its collector is output at a low level. To the negative pole of the internal light-emitting tube of the optocoupler IC, the optocoupler IC is energized and internally conducted, and the relay J is driven to pull in, the contact J-1 of the relay J changes from a normally open point to a normally closed point, and the load power is turned on ;When the day is bright, the photosensitive resistor RG is irradiated with light, the resistance value is small, and there is no partial voltage between it and the potentiometer RP1, so that the triode VT1 has no bias current and cuts off, the photocoupler IC loses power and cuts off, and the relay J releases and cuts off The load power supply has the advantages of modular design, strong practicability, and simple installation and connection.

The above is only a preferred embodiment of the utility model, and can not limit the scope of the utility model implementation. All equal changes and decorations made according to the patent scope of the utility model should still belong to the scope of the utility model. within range.

Claims (3)

1. A photosensitive energy-saving control circuit, characterized in that: comprise ambient light detection circuit (1), optocoupler trigger circuit (2) and drive circuit (3), the output signal of described ambient light detection circuit (1) is transmitted to An optocoupler trigger circuit (2), the output signal of the optocoupler trigger circuit (2) is sent to the drive circuit (3). 2. The photosensitive energy-saving control circuit according to claim 1, characterized in that: the ambient light detection circuit (1) is composed of a photosensitive resistor RG connected in series with a potentiometer RP1 as a photoelectric controller. 3. The photosensitive energy-saving control circuit according to claim 1 or 2, characterized in that: the photocoupler trigger circuit (2) is composed of a triode VT1 connected to a photocoupler IC.

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