The hardware of the system is mainly composed of single chip microcomputer, photoresistor, relay and LED lamp. As the control core, the MCU judges the intensity of ambient light by reading the voltage value of the photoresistor, thus controlling the switch state of the relay, and then controlling the turn-on and turn-off of the LED lamp. At the same time, the system can also communicate with the upper computer through external buttons or wireless communication modules to realize remote control and monitoring of street lamps.
In the software design of the system, we should first write the program code of single chip microcomputer, realize the reading and judgment of photosensitive resistance, and control relays and LED lights. Secondly, it is necessary to design a user interface to communicate with the single chip microcomputer through the upper computer to realize the remote control and monitoring of street lamps. Finally, some intelligent functions can be added, such as automatically adjusting the brightness according to the time period, detecting the failure of street lamps and giving an alarm.
The working principle of the system is as follows: when the ambient light intensity is lower than a certain threshold, the single chip microcomputer will judge it as night, at this time, the relay is closed and the LED light is turned on, thus realizing the automatic turning on of the street lamp; When the ambient light intensity is higher than a certain threshold, the single chip microcomputer will judge it as daytime, at this time, the relay is turned off and the LED lamp is turned off, thus realizing the automatic turn-off of the street lamp. By constantly reading the voltage value of the photoresistor, the system can sense the change of ambient light intensity in real time and control it accordingly as needed.
The street lamp control system based on single chip microcomputer has the following advantages: firstly, it can automatically adjust the brightness of street lamps according to actual needs to improve energy utilization efficiency; Secondly, it can realize the automatic switch of street lamps and reduce the cost of manual management; Thirdly, through remote control and monitoring, centralized management and fault detection of street lamps can be realized; Finally, the system design is flexible and can be expanded and improved according to actual needs.
In a word, the street lamp control system based on single chip microcomputer is an efficient and intelligent street lamp management scheme, which can improve the use efficiency and management level of street lamps and achieve the purpose of energy saving and environmental protection.