Intelligent Table Lamp Based on Single Chip Microcomputer

Abstract At present, modern smart home is increasingly favored by people, and the functions of intelligent desk lamps become diversified with the demand updating. In the process of using desk lamps, poor sitting posture or overuse of eyes may cause vision loss and physical pain. Therefore, it is of great theoretical significance and practical value to actively explore and develop an intelligent desk lamp with low cost and functions of automatic dimming, sitting posture correction, reminder of rest, energy conservation and environmental protection. In the intelligent desk lamp designed in this paper, STC89C51 microcontroller is used as the core controller, BH1750 light sensor module is used to detect the current ambient light intensity, and the pulse width modulation (PWM) technology is used to control the brightness of the desk lamp for TB6612 motor drive. The infrared probe module is used for personnel detection. When the infrared probe module detects that someone is approaching, the desk lamp will be automatically turned on through the relay module. When no one is detected, the microcontroller controls the relay to automatically turn off the desk lamp and power off. The intelligent desk lamp is very convenient to use. It can not only save electric energy effectively, but also solve the problem of touching the lamp in the dark and the potential safety hazard for people by automatically switching on and off the lamp. It has good application value and market prospects.