Vehicle radar-based side impact assessment method
First Claim
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1. A side impact threat assessment system for a vehicle comprising:
- a single radar sensor mounted on each side of the vehicle, each sensor generating a range and range-rate value for a detected target object; and
a controller coupled to each radar sensor, said controller calculating an estimated target object speed, an angle of the target object line of travel with respect to said respective sensor line of sight, and a shortest distance value from the respective sensor to the target object line of travel and, comparing said shortest distance value and a change in said angle value to respective threshold values.
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Abstract
A side impact object sensing system for a vehicle includes a single radar sensor mounted on each side of the vehicle, each sensor generating a range and range-rate value for a detected target object, and a controller coupled to each radar sensor. The controller calculates an estimated target object speed, an angle of the target object line of travel with respect to the respective sensor line of sight, and a shortest distance value from the respective sensor to the target object line of travel, and compares the shortest distance value and a change in the angle value to respective threshold values for potential collision threat assessment.
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Citations
20 Claims
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1. A side impact threat assessment system for a vehicle comprising:
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a single radar sensor mounted on each side of the vehicle, each sensor generating a range and range-rate value for a detected target object; and a controller coupled to each radar sensor, said controller calculating an estimated target object speed, an angle of the target object line of travel with respect to said respective sensor line of sight, and a shortest distance value from the respective sensor to the target object line of travel and, comparing said shortest distance value and a change in said angle value to respective threshold values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of determining the collision threat of a target object for a side impact vehicle safety system comprising:
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providing a single radar sensor on each side of a vehicle for generating a range and range-rate value for a respective detected target object; calculating an estimated target object speed; calculating an angle of the target object line of travel with respect to said respective sensor line of sight; calculating a shortest distance value from the respective sensor to the target object line of travel; comparing said shortest distance value and a change in said angle value to respective threshold values. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a vehicle side impact countermeasure system comprising:
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providing a single radar sensor on each side of a vehicle for generating a range and range-rate value for a respective detected target object; calculating an estimated target object speed; calculating an angle of the target object line of travel with respect to said respective sensor line of sight; calculating a shortest distance value from the respective sensor to the target object line of travel; comparing said shortest distance value and a change in said angle value to respective threshold values; comparing said target object speed to a threshold detected object speed; comparing said target object range to a threshold detected object range; estimating a target object time-to-impact and comparing said target object time-to-impact to a threshold detected object time-to-impact; and activating a safety countermeasure device when said respective threshold values are satisfied. - View Dependent Claims (19, 20)
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Specification