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Title:
OCCUPANT ATTITUDE DETECTION APPARATUS AND OCCUPANT ATTITUDE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2010/087479
Kind Code:
A1
Abstract:
An occupant attitude detection apparatus and an occupant attitude detection method which can be inexpensively configured resulting in cost reduction and detects the attitude of an occupant precisely. The occupant attitude detection apparatus (100) is provided with a capacitance sensor unit (10) and a circuit unit (20). The capacitance sensor unit (10) is provided with first and second detection electrodes (11, 12) which are disposed respectively on a cabin ceiling (2) respectively at a position in front of the seat (40) and a position just above the seat (40), wherein the respective electrodes (11, 12) are respectively connected with a capacitance detection circuit (21) and a shield drive circuit (23) for the circuit unit (20) by way of change-over switches (SW1, SW2). A CPU (29) for the circuit unit (20), using a capacitance value based on the capacitance from the electrodes (11, 12) detected by the capacitance detection circuit (21), determines a seated attitude on the basis of information relating to the position of the head (49) of the occupant (human body) (48) seated on the seat (40). Attitude information relating to the determined seated attitude is outputted to an ECU mounted to the vehicle (1) and used to control the expansion of an airbag or the like.

Inventors:
TOGURA TAKESHI (JP)
ICHIHARA KOICHI (JP)
SAKIYAMA KOJI (JP)
Application Number:
PCT/JP2010/051350
Publication Date:
August 05, 2010
Filing Date:
February 01, 2010
Export Citation:
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Assignee:
FUJIKURA LTD (JP)
TOGURA TAKESHI (JP)
ICHIHARA KOICHI (JP)
SAKIYAMA KOJI (JP)
International Classes:
G01B7/00; B60N2/90; B60R21/013
Foreign References:
JP2008265376A2008-11-06
JP2000510408A2000-08-15
JP2006145413A2006-06-08
JP2002514986A2002-05-21
Other References:
See also references of EP 2400259A4
Attorney, Agent or Firm:
ITAMI, Masaru et al. (JP)
Itami 勝 (JP)
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