Solar-Powered Posture Correction Optimization System

The system is centered around an STM32F103C8T6 microcontroller equipped with a matrix keypad, allowing users to set warning thresholds for distance and ambient light intensity. Utilizing an HC-SR04 ultrasonic sensor, it measures the distance between the user and fixed objects such as desks, while pressure sensors on the seatback monitor pressure distribution to accurately detect poor postures like slouching. If the measured distance exceeds the preset range, a buzzer sounds an alarm, and a red LED flashes. Simultaneously, a BH1750 light sensor monitors ambient light intensity in real-time, triggering the buzzer and a blue LED flash when abnormal levels are detected. Data is transmitted to a mobile phone via an HC-05 Bluetooth module, enabling users to promptly review and correct their posture. Additionally, the system incorporates a solar panel to provide sustainable power support, promoting energy conservation and emission reduction.