公开(公告)号：US20020154006A1

公开(公告)日：2002-10-24

申请号：US09840553

申请日：2001-04-23

Applicant: Delphi Technologies, Inc.

Inventor： Morgan D. Murphy ,  Douglas Allen Nunan ,  Charles A. Cluff ,  David R. Little ,  Greston T. McCoy JR. ,  Gary Eugene Oberlin

IPC: B60Q001/00

CPC classification number: B60R21/0136 ,  B60R2021/0004

Abstract: An improved vehicle crash sensing apparatus quickly and reliably characterizes frontal impacts with only minimal data processing requirements. Two or more longitudinally separated piezoelectric strips strategically located in a frontal portion of the vehicle produce impact signals that are analyzed to characterize the type of impact and the structural crush rate. In a simple implementation involving only two piezoelectric strips, a first strip extends laterally along a forward portion of the front bumper, and a second strip extends laterally along a forward portion of the hood panel, above and rearward of the first strip. In cases where an impact signal is developed by only one of the two strips, a high (under-ride) or low (over-ride) impact is indicated. If impact signals are developed by both strips, the intervening time is measured as an indication of the structural crush rate. In a more complex implementation, the bumper and hood strips are divided into two or more individual strip segments so the center and distribution of impact and the impact vector may be quickly and reliably characterized as well.

Abstract translation: 改进的车辆碰撞感测装置快速可靠地表征正面影响，只需要最少的数据处理要求。 策略性地位于车辆前部的两个或更多个纵向分离的压电条产生了被分析以表征冲击类型和结构挤压速率的冲击信号。 在仅涉及两个压电条的简单实施中，第一条沿着前保险杠的前部横向延伸，并且第二条沿着发动机罩板的前部在第一条的上方和后方横向延伸。 在两个条中只有一个冲击信号发生的情况下，指示高（下乘）或低（过骑）冲击。 如果冲击信号是由两条条带开发出来的，那么测量中间时间作为结构挤压速率的指标。 在更复杂的实施中，保险杠和罩带被分成两个或更多个单独的带段，因此冲击的中心和分布以及冲击矢量也可以被快速和可靠地表征。