Safety mechanism design for automotive power windows using Hall sensor

Abstract

This paper is concerned with the control mechanism design for automotive power windows system to enhance safety and comfort for the driver and the passenger. A new low–cost anti–pinch system has been presented for exceeding FMVSS118–S5 safety standards. First, the Hall effect IC as a speed sensor is specifically installed on the motor rotor for the anti–pinch system. Next, the effects of the number of Hall sensors and angular position of each sensor on the anti–pinch performance have been investigated to obtain optimal speed resolution. Then, three Hall IC sensors have been employed to a new anti–pinch system. In addition, it is found that the optimal sensor position is 60° through extensive experimental tests. Finally, the new motorised window system has been verified to exceed the rigorous international regulations while guaranteeing safety and comfort.