Wireless remote control system for DC motor used singlechip microcomputer

FENG Jinmei1, WANG Qingming2
(1.Urban Construction and Safe Engineering, Shanghai Institute of Technology, Shanghai 200235, China;
2.College of Mechanical and Power Engineering, East China University of Science and Technology,
Shanghai 200237, China)

Abstract: In order to remote control onoff, rotation direction, and spindle speed of ventilation fans distributed megastructures, wireless remote control system of DC motor based on singlechip microcomputer was studied. The hardware structure, software design and control principle were analyzed in detail．SCM AT89S51 was used as the core of the control system. Wireless remote control technique and pulse width modulation(PWM) technique were used to control the motor. IR2108 was used as driver chip to design driver circuit. PT2262/PT2272 encoder and decoder were adopted in remote control unit. The research results show that the system has the characteristics of simpler structure, lower cost and higher reliability．
Key words: wireless remote control; DC motor; singlechip microcomputer; pulse width modulation(PWM)