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    • 2. 发明申请
    • CAPACITIVE SEAT OCCUPANCY DETECTION SYSTEM OPERABLE AT WET CONDITIONS
    • 电能座椅检测系统可在条件下运行
    • WO2016131639A1
    • 2016-08-25
    • PCT/EP2016/052072
    • 2016-02-01
    • IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    • GOEDERT, GuenterZEILER, OlegMARX, EdmundSCHECKENBACH, Ingrid
    • B60R21/015B60N2/56G01R27/26B60N2/00
    • B60N2/002B60N2/5685B60R21/01532B60R21/0154G01R27/26H03K2217/960705H03K2217/960765
    • A capacitive seat occupancy classification system (10), in particular a vehicle seat occupancy detection system (10), comprising: - at least one capacitive sensor member (12) having at least one sensing electrode (14), - an impedance measurement circuit (16) for determining a complex impedance or a complex admittance (Y) of the at least one sensing electrode (14), - an evaluation unit (22) for generating an output signal (24) based on a determined complex admittance (Y) of the at least one sensing electrode (14) and comparison of the determined complex admittance (Y) to at least one predetermined value (Y low thr , Y upp thr ), and - at least one electrically conductive ground connecting member (48; 56) that is intentionally electrically connected to the reference electrode and that is arranged in close proximity to the at least one sensing electrode (14), wherein the at least one ground connecting member (48; 56) and the at least one sensing electrode (14) are galvanically separated. As soon as the seat (26) gets wet, the electrically conductive ground connecting member (48; 56) and surroundings of the sensing electrode (14) get wet, and the sensing electrode (14) is directly electrically connected to the reference electrode by the at least one ground connecting member (48; 56).
    • 一种电容座椅占用分类系统(10),特别是车辆座椅占用检测系统(10),包括:至少一个具有至少一个感测电极(14)的电容式传感器构件(12), - 阻抗测量电路 16),用于确定所述至少一个感测电极(14)的复阻抗或复合导纳(Y); - 评估单元(22),用于基于所确定的复数导纳(Y)的生成输出信号(24) 所述至少一个感测电极(14)和所确定的复合导纳(Y)与至少一个预定值(Ylow thr,Yupp thr)之间的比较,以及 - 至少一个导电接地连接构件(48; 56) 有意地电连接到参考电极并且被布置成紧邻至少一个感测电极(14),其中所述至少一个接地连接构件(48; 56)和所述至少一个感测电极(14)是电流的 分离。 一旦座椅(26)变湿,导电接地连接构件(48; 56)和感测电极(14)的周围就会变湿,感测电极(14)通过 所述至少一个接地连接构件(48; 56)。