发明授权
- 专利标题: Apparatus and method for discerning certain occupant characteristics using a plurality of capacitive sensors
- 专利标题(中): 使用多个电容传感器识别某些乘员特征的装置和方法
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申请号: US27311申请日: 1998-02-20
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公开(公告)号: US6158768A公开(公告)日: 2000-12-12
- 发明人: Charles E. Steffens, Jr. , Brian K. Blackburn , Joseph E. Mazur
- 申请人: Charles E. Steffens, Jr. , Brian K. Blackburn , Joseph E. Mazur
- 申请人地址: OH Lyndhurst
- 专利权人: TRW Vehicle Safety Systems Inc. /TRW Inc.
- 当前专利权人: TRW Vehicle Safety Systems Inc. /TRW Inc.
- 当前专利权人地址: OH Lyndhurst
- 主分类号: B60R21/01
- IPC分类号: B60R21/01 ; B60R21/015 ; B60R21/32
摘要:
An apparatus (47) determines presence, type, and a size value of a vehicle occupant (14) located within a vehicle (12). A first capacitive sensor (46A) is located on a first side of an occupant location within the vehicle (12) and senses a first capacitance value. An associated drive/monitor circuit (42A) provides a first signal (44A) indicative of the first capacitance value. A controller (27) determines from the first signal (44A) whether the first capacitance value is indicative of an occupant located proximate to the first capacitive sensor (46A). The controller (27) determines a first distance between the first capacitive sensor (46A) and the occupant (14) using the first signal (44A). A second capacitive sensor (46C) is located on a second side of the occupant location and senses a second capacitance value. An associated drive/monitor circuit (42C) provides a second signal (44C) indicative of the second capacitance value. The controller (27) determines from the second signal (44C) whether the second capacitance value is indicative of an occupant located proximate to the second capacitive sensor (46C). The controller (27) determines a second distance between the second capacitive sensor (46C) and the occupant using the second signal (44C). The controller (27) determines from at least one of the first and second signals (44A and 44C) whether the occupant type is a child in a child seat. The controller (27) determines a size value of the occupant using the first and second determined distances.
公开/授权文献
- US4785285A Parallel bus alarm system 公开/授权日:1988-11-15
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