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    • 7. 发明申请
    • SEAT BELT TENSION DETERMINATION USING MULTIPLE BELT TENSION SENSORS
    • 使用多个单张张力传感器的座椅张力张力测定
    • WO2004022387A3
    • 2004-06-24
    • PCT/US0327616
    • 2003-09-04
    • DELPHI TECH INC
    • SULLIVAN STUART SMURPHY MORGAN DPATTERSON JAMES F
    • B60R20060101B60R21/015G01L1/00G01L1/26G01L3/00G01L5/00G01L5/04G01N3/08G08B21/00
    • B60R21/01516B60R21/0155
    • A vehicle seat belt (50) is provided with multiple seat belt tension sensors (66) providing output signals that are received and averaged. Signals having values outside a band around the average are dynamically tested against a signal from an occupant weight sensor (46), vertical seat accelerometer or other sensor indicating expected vertical acceleration of an occupant restrained by the seat belt. This test provides variance values and time-averaged values of each signal, derives a reference value for each signal and compares the variance value for each signal to its reference value. If the comparisons indicate that the dynamic variance of the signals is significantly different, the signal is declared invalid and the average value is recalculated without the invalid signal. The final average signal after removal of all invalid signals determines the belt tension value, which may be used to compensate a weight sensor signal in an occupant characterization system to help control deployment of a vehicle airbag.
    • 车辆安全带(50)设置有多个安全带张力传感器(66),其提供接收和平均的输出信号。 具有围绕平均值的频带之外的值的信号相对于来自乘员权重传感器(46),垂直座椅加速度计或其他传感器的信号进行动态测试,该传感器指示由安全带约束的乘员的预期垂直加速度。 该测试提供每个信号的方差值和时间平均值,导出每个信号的参考值,并将每个信号的方差值与其参考值进行比较。 如果比较表明信号的动态方差显着不同,则信号被声明为无效,并且平均值被重新计算而没有无效信号。 去除所有无效信号之后的最终平均信号决定了皮带张力值,其可用于补偿乘员表征系统中的重量传感器信号,以帮助控制车辆安全气囊的展开。