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Method and system for impact time and velocity prediction

A technology of impact velocity and time, applied in radio wave measurement systems, measurement devices, and using re-radiation, etc., can solve problems such as incorrectness, unsatisfied Gaussian distribution, incorrect impact time and impact velocity, etc.

Active Publication Date: 2008-07-23
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the sensor measurement error is biased and does not satisfy the Gaussian distribution assumed by the recursive filter
As a result, the relative motion and position of the target object are estimated incorrectly, as are the impact time and impact velocity estimates

Method used

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  • Method and system for impact time and velocity prediction
  • Method and system for impact time and velocity prediction
  • Method and system for impact time and velocity prediction

Examples

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Embodiment Construction

[0021] Referring now to the drawings, the preferred exemplary embodiments are shown in detail. Although the drawings represent some embodiments, the drawings are not necessarily to scale and certain features may be enlarged, removed or partially sectioned to better illustrate and explain the present disclosure. Furthermore, the embodiments set forth herein are not intended to be exhaustive or to limit or limit the claims to the exact forms and configurations as shown in the drawings and disclosed in the following detailed description. It will be appreciated that the sensor types and locations listed here are illustrative only and that other sensor types and locations may be used without departing from the scope of the present disclosure.

[0022] 1A-1C illustrate a vehicle using a series of sensors as part of a collision detection system. The systems shown in FIGS. 1A-1C are examples of many systems currently in use. This series of drawings exemplifies existing problems with c...

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PUM

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Abstract

A collision detection system includes at least one sensor. The data from the sensor is input to a recursive filter which selectively uses the input to predict the motion of a target object relative to a host vehicle. The recursive filter continues to use the data from the sensor until the target object is within a threshold distance of the host vehicle. Within the threshold distance, the sensor does not reliably provide accurate data. Accordingly, the recursive filter omits the sensor input from motion estimates when the target object is within the threshold distance, which leads to significant improvement in target motion prediction.

Description

technical field [0001] The present disclosure generally relates to improved prediction of impact time and impact velocity in vehicle collision detection systems. Background technique [0002] In an ongoing effort to make vehicles safer, more automakers are beginning to integrate crash detection systems into their vehicles. Collision detection systems typically include an object tracking system that receives input from sensors mounted on the host vehicle. These sensors typically detect objects in the vicinity of the host vehicle. The object tracking system uses information from the sensors to determine the trajectory of the target object. The trajectory of the target object typically includes information such as the position, velocity and acceleration of the target object relative to the host vehicle. Although a collision detection system can only use a single sensor, the system often includes multiple sensors working together to more precisely locate and track the target ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/93B60R21/013G01S13/931
CPCG01S2013/9392G01S13/865G01S2013/9367G01S13/931G01S13/86G01S13/723G01S2013/93276G01S2013/9323
Inventor 赵圭明安东尼·G·肯骆望东马克·A·希汗洪永康
Owner FORD GLOBAL TECH LLC