Intelligent lighting control system application circuit diagram

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

When the microcomputer time switch is used alone, it will appear dark outside the power supply time range. When lighting is required, illumination is not available because it is not within the power supply time. Similarly, if the light control switch is used alone, it will not be powered when the daytime illumination is strong. The cloudy day is dark and the power is supplied at night, and it is always available until dawn to automatically power off. And no one has gone to work in the middle of the night, and the voltage will rise, one will waste energy, and the other will reduce the life of the bulb (tube). Therefore, the two are combined to complement each other, and the microcomputer control switch controls the power supply time of the light control switch. The light control switch automatically controls the opening and closing of the AC contactor according to the brightness of the light. Thus completely solved the phenomenon of "long light".
The working process of the controller is set according to the need to set the opening time and closing time of the daily power supply of the microcomputer control switch. By the time of opening. The microcomputer time switch is turned on, and the light and light of the light during this time also depends on the brightness of the light. The daylight is bright. The photoresistor cds in the light control switch is illuminated by light, the resistance value becomes smaller, the transistors T1 and T2 are turned off, and the relay J coil loses the electrical contact. The AC contact CJ coil loses power and does not pull in. The main contact cuts off the illumination supply. When the brightness of the cloudy day is weak and at night, the resistance value is increased due to the weak illumination and no light of the photoresistor cds, the transistors T1 and T2 are saturated, the relay J is electrically connected, and the illumination is switched through the AC contactor CJ. power supply. When it is turned off, the microcomputer time switch will cut off the power of the light control switch. After the light control switch loses power, the AC contactor CJ coil will also be de-energized, and the main contact will cut off the lighting power. Thereby achieving the purpose of intelligent control of lighting.
Controller circuit design

The microcomputer time control switch adopts KG316T type, and the light control switch is self-made. The photoresistor cds were removed from the old voice-activated delay switch. The relay is of the JQX-4 type and the coil is rated at 12V. The two sets of contacts are connected in parallel for improved reliability. The red LED acts as a turn-on indication for the light control switch. Parallel to the coil of the AC contactor CJ. As long as the components used are genuine and soldered correctly, they will succeed. When debugging, first do not connect the AC contactor CJ, block the light on the photoresistor by hand, J is attracted, the LED is bright; when the hand is removed, J is disconnected and the LED is off. Adjusting the resistance of the resistor R adjusts the sensitivity of the light control. CJ is a 20A AC contactor. The coil voltage is 220V and the model number is CDC10-20. The entire light control switch is housed in a self-made wooden box. The microcomputer time control switch is mounted on the wooden box, and two Φ5mm holes are opened on the side of the wooden box for mounting the LED and the photoresistor. The wooden box is placed. The side of the power distribution room, the IED and the photoresistor face the window. The AC contactor is installed next to the lighting control air switch in the power distribution cabinet, and the entire controller is installed. When using, according to the description of KG316T microcomputer time switch, set the opening time and closing time of daily lighting power supply, it can be put into use.