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    • 3. 发明公开
    • Compressible capacitance sensor for determining the presence of an object
    • Sitzbelegungssensorsystem
    • EP1933461A1
    • 2008-06-18
    • EP08003107.3
    • 2002-07-09
    • NARTRON CORPORATION
    • Washeleski, John M.Perrin, Randall L.
    • H03K17/955B60R21/01B60N2/00G01D5/241
    • B60R21/01516B60N2/002B60R21/01526B60R21/01532E05Y2900/548G01D5/2417H03K17/962
    • A seat occupant sensor system comprises at least one seat occupant sensor (62,64,66,68) within a seat (70). The sensor includes first, second, and third flexible conductor plates (86,88,90). The first plate (86) is interposed between the second and third plates (88,90) such that the first and third plates (86,90) are separated by a separation distance. The second and third plates (88,90) are electrically grounded and the first, second, and third plates (86,88,90) have a capacitance dependent on the separation distance. The sensor further includes a non-conductive compressible element (92) interposed between the first and second plates (86,88) and a second non-conductive compressible element (94) interposed between the first and third plates (86,90). The first and second elements (92,94) compress in response to a seat occupant applying force to the sensor such that the separation distance between the second and third plates (88,90) decreases, wherein the capacitance changes in response to the separation distance decreasing. The sensor also comprises a controller for determining characteristics of the seat occupant as a function of the capacitance of the at least one seat occupant sensor.
    • 座椅乘员传感器系统包括座椅(70)内的至少一个座椅乘客传感器(62,66,66,68)。 传感器包括第一,第二和第三柔性导体板(86,88,90)。 第一板(86)插入在第二板和第三板(88,90)之间,使得第一板(86,90)与第三板(86,90)分开间隔距离。 第二和第三板(88,90)电接地,并且第一,第二和第三板(86,88,90)具有取决于间隔距离的电容。 传感器还包括介于第一和第二板(86,88)之间的非导电可压缩元件(92)和置于第一和第三板(86,90)之间的第二非导电可压缩元件(94)。 第一和第二元件(92,94)响应于座椅乘员向传感器施加力而压缩,使得第二和第三板(88,90)之间的间隔距离减小,其中电容响应于间隔距离而改变 降低。 传感器还包括用于根据至少一个座椅乘员传感器的电容确定座椅乘客的特性的控制器。