At present, the main form of lighting control is to manually control all the lamps one by one, which is not only troublesome but also inefficient and does not meet the standards of modern comfortable life. Therefore, designing an intelligent lighting system that can conveniently control the functions of the lamp first has practical value. Moreover, it has a broad market prospect. Smart is not synonymous with expensive and impractical, but it is convenient for intelligent lighting control and can control various lamps in different living areas and different occasions. In this paper, the ST series MCU is used to change the original fixed mechanical switch to the wireless remote control switch, and the wireless remote control technology is used to send signals. Such a wireless remote control can be combined with a controller to control the opening of the indoor lighting, which is not only beautiful but also beautiful. Practical can be very convenient to use.
Control system overall design
The system consists of a wireless transmitting module, a wireless receiving module and a switching power supply control module. The system structure is shown in Figure 1.
Figure 1 Control system composition diagram
The wireless transmitting module is responsible for transmitting an open and close command to a certain load circuit, and the receiving module is responsible for receiving an instruction from the transmitting module, and then transferring the command to a processor of the switching power supply control module, and the processor controls the switching power supply module after parsing the command. The relay is opened and closed to achieve intelligent control of the load power supply.
Wireless transmission module design
The sending module is mainly composed of HS1527 ($1056.0000) wireless code-issuing chip, surface acoustic filter, indicator light and filter circuit, and the transmitting module is operated as a remote controller. The circuit diagram is shown in Figure 2. When the different button K is pressed, the transmitting chip will send different codes through the antenna. The code is sent to the receiving module through the antenna, and the receiving module sends the code to the control module for analysis and processing. The transmitting module supply voltage is 12 V, and is powered by the battery. .
Figure 2 transmission module main circuit
Wireless receiver module design
The wireless receiving module consists of two parts. The power supply part consists of LNK304DN ($0.5040) and peripheral circuits. The circuit can convert 220 V AC voltage into DC 5 V voltage, and supply power to the receiver module and the control module processor. Figure 3 shows.
Figure 3 controller power supply circuit
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