Title: Safety mechanism design for automotive power windows using Hall sensor

Authors: Seok-Kwon Jeong; Wahyu Kunto Wibowo; Sam-Sang You

Addresses: Department of Refrigeration and Air-conditioning, Pukyong National University, Busan 608-739, South Korea ' Graduate School of Mechatronics, Pukyong National University, Busan 608-739, South Korea ' Division of Mechanical Engineering, Korea Maritime and Ocean University, Busan 606-791, South Korea

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.

Keywords: vehicle power windows; DC motors; FMVSS118-S5; anti-pinch systems; Hall sensors; squeezing forces; vehicle safety; control mechanism; safety mechanisms; mechanism design; automotive power windows; ride comfort; speed sensors; sensor positioning; sensor location; international regulations.

DOI: 10.1504/IJVS.2015.068688

International Journal of Vehicle Safety, 2015 Vol.8 No.2, pp.129 - 143

Received: 27 May 2014
Accepted: 20 Jan 2015
Published online: 08 Apr 2015 *

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