Article Details

Abstract

This paper uses STC89C52 single-chip microcomputer as the core device, combined with HC-RS04 ultrasonic sensor, photoresistor, timer, ADC0832 analog-to-digital converter, and LCD1602 LCD screen, to design a sitting posture correction system. Real-time monitoring of the distance between the user and the measured object is carried out through ultrasonic sensors, and the illumination intensity of the environment is monitored in real time through photoresistors. The collected data is processed by the single-chip microcomputer. When either the measured distance or illumination intensity exceeds the normal range, the single-chip microcomputer drives a buzzer alarm to remind the user to pay attention to correction. Meanwhile, the measured data is displayed in real time on the LCD1602 display screen. A detailed study is conducted on the hardware circuit and software design scheme of a sitting posture correction system based on a single-chip microcomputer. Keil software is used for code debugging, and Proteus is used for software simulation. Through functional testing, it has been proven that the designed sitting posture correction system can work normally in various situations.

Keywords

Single-chip Microcomputer; ultrasonic sensor; sitting posture monitoring; functional testing

References

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Funding

National Natural Science Foundation of China (61901350); Natural Science Basic Research Program of Shaanxi Province (2024JC-YBQN-0644); 2023 Xi'an Aeronautical University Level Course Ideological and Political Demonstration Course Construction Project (23ZLGC5009); 2022 Xi'an Aeronautical University Undergraduate First Class Course Construction Project (22ZLGC5012); 2023 Xi'an Aeronautical University Knowledge Graph Construction Project (23ZLGC3004)

About the authors

Li Na (2002-), female, Han ethnicity, from Xianyang, Shaanxi Province, undergraduate studies, research direction: signal processing; Corresponding author: Wang Wei (1980-), male, Han ethnicity, from Xi'an, Shaanxi Province, associate professor, PhD, research direction: electromagnetic field and microwave technology.