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公开(公告)号：US20190088134A1
公开(公告)日：2019-03-21
申请号：US16085374
申请日：2016-03-15
IPC分类号： G08G1/16 , G07C5/08 , G07C5/00 , G01L5/00 , B60R21/0134
CPC分类号： G08G1/162 , B60R21/0132 , B60R21/0134 , B60R21/0136 , G01L5/0052 , G07C5/008 , G07C5/085
摘要： Light or moderate impacts against a vehicle are detected. Measured acceleration and yaw rate are compared to baseline thresholds in a baseline state. When the acceleration is above the threshold, a distance from an estimated impact location to a vehicle center-of-gravity is determined. When the determined distance is less than a vehicle edge distance, an impact-suspected state will be entered if at least one of the acceleration and yaw rate is above the respective threshold for a predetermined duration. In the impact-suspected state, a plurality of vehicle dynamic behaviors are monitored for confirming occurrence of the light impact. A return is made to the baseline state if the acceleration and yaw rate fail to remain above the respective threshold or if the calculated distance fails to remain less than the edge distance. The impact is detected when at least one of the behaviors confirms the occurrence.
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公开(公告)号：US20190126874A1
公开(公告)日：2019-05-02
申请号：US16085385
申请日：2016-03-15
IPC分类号： B60R21/0132 , B60R21/0136
摘要： Crash detection in a road vehicle includes determining an impact location. Acceleration and yaw rate are measured, and occurrence of an impact is detected by comparing a total acceleration to an impact threshold. An impact angle is determined according to an arctangent of a ratio of lateral and longitudinal accelerations. A center-of-gravity to impact distance is determined according to vehicle mass, moment of inertia, acceleration, and yaw rate. When the yaw rate is less than a yaw threshold and the impact angle is within a predetermined range of an integer multiple of 90°, then the impact location is determined in response to a projection of the impact distance selected according to signs of the accelerations. Otherwise, the impact location is determined in response to a projection of the impact distance selected according to signs of the accelerations and a sign of the yaw rate.
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