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    • 1. 发明授权
    • Method and apparatus for sensing a vehicle crash condition using
velocity enhanced acceleration crash metrics
    • 使用速度增强加速度碰撞度量来感测车辆碰撞状况的方法和装置
    • US5587906A
    • 1996-12-24
    • US258952
    • 1994-06-13
    • George W. McIverMark A. CarlinJames E. BormannRonald A. MuckleyRoger A. McCurdy
    • George W. McIverMark A. CarlinJames E. BormannRonald A. MuckleyRoger A. McCurdy
    • B60R21/01B60R21/32
    • B60R21/0132
    • An apparatus for sensing a vehicle crash condition includes an accelerometer (20) for sensing a vehicle crash condition and for providing a signal having a characteristic indicative of the vehicle crash condition. A crash velocity determining circuit (74) determines a crash velocity value (78) from the accelerometer. Crash metric determining circuits (80, 82, 94, 96, 104, 108) determine crash metric values functionally related to acceleration. Threshold determining circuits (88, 98, 112) determining associated threshold values functionally related to the determined crash velocity value (78). Comparators (90, 100, 116) compare the determined crash metric values against associated threshold values. A controller (34) provides a control signal to control actuation of a restraining device in response to the comparison. A shape monitoring circuit (120) determines if the shape of the acceleration signal matches a predetermined shape. If the shape matches, the controller provides the control signal.
    • 用于感测车辆碰撞状况的装置包括用于感测车辆碰撞状况并用于提供具有指示车辆碰撞状况的特征的信号的加速度计(20)。 碰撞速度确定电路(74)确定来自加速度计的碰撞速度值(78)。 碰撞度量确定电路(80,82,94,96,104,108)确定与加速度功能相关的碰撞度量值。 确定与所确定的碰撞速度值(78)功能相关的相关阈值的阈值确定电路(88,98,112)。 比较器(90,100,116)将确定的故障度量值与相关联的阈值进行比较。 响应于比较,控制器(34)提供控制信号以控制限制装置的致动。 形状监视电路(120)确定加速度信号的形状是否匹配预定的形状。 如果形状匹配,则控制器提供控制信号。