Smart Steering Wheel with Swept Frequency Capacitive Sensing

Yutaro ONO  Yuhei MORIMOTO  Reiji HATTORI  Masayuki WATANABE  Nanae MICHIDA  Kazuo NISHIKAWA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E100-C   No.11   pp.972-977
Publication Date: 2017/11/01
Online ISSN: 1745-1353
Type of Manuscript: INVITED PAPER (Special Section on Electronic Displays)
Category: 
Keyword: 
drowsiness detection,  gripping position,  gripping area,  body resistance,  driving position,  

Full Text: FreePDF(1.2MB)


Summary: 
We present a smart steering wheel that detects the gripping position and area, as well as the distance to the approaching driver's hands by measuring the resonant frequency and its resistance value in an LCR circuit composed of the floating capacitance between the gripping hand and the electrode of the steering, and the body resistance. The resonant frequency measurement provides a high sensitivity that enables the estimation of the distance to the approaching hand, the gripping area of a gloved hand, and for covering the steering surface with any type of insulating material. This system can be applied for drowsiness detection, driving technique improvements, and for customization of the driving settings.