Design of access control for university laboratory
To enhance the safety and convenience of university laboratories,an intelligent access control system has been designed.This system utilizes the STC89C52 single-chip microcomputer as its controller,employs an infrared temperature sensor for body temperature detection,and allows password input through a keyboard.The single-chip microcomputer compares the stored password with the input password,controls the door lock action through a PWM algorithm,and simultaneously displays the measured body temperature and password comparison results.The simula-tion experimental results indicate that this system can achieve functions such as password unlocking and body temperature measurement,with an average relative error of 0.07％in temperature measurement.This system is cost-effective,easy to operate,saves human resources,and promotes the safe conduct of offline experimental classes.
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