The detected human body signal is transmitted to the single-chip microcomputer module with STC89C52 as the core through the infrared sensing module composed of devices such as SD02 pyroelectric sensor; the single-chip microcomputer module detects the signal sent by the front stage according to the set program, and makes a judgment to output the electrical signal to control the rear stage driving module; the driving module adopts SH-215B high-performance subdivision driver, and its output controls the operation of the motor.
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