Collision detection system and method of estimating target crossing location
First Claim
1. A collision detection system comprising:
- a first sensor for sensing an object in a field of view and measuring a first range defined as the distance between the object and the first sensor;
a second sensor for sensing the object in the field of view and measuring a second range defined by the distance between the object and the second sensor; and
a controller for processing the first and second range measurements, said controller further estimating a crossing location of the object as a function of the first and second range measurements.
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Abstract
A collision detection system and method of estimating a crossing location are provided. The system includes a first sensor for sensing an object in a field of view and sensing a first range defined as the distance between the object and the first sensor. The system also includes a second sensor for sensing the object in the field of view and sensing a second range defined by the distance between the object and the second sensor. The system further includes a controller for processing the first and second range measurements and estimating a crossing location of the object as a function of the first and second range measurements. The crossing location is estimated using range and range rate in a W-plane in one embodiment and using a time domain approach in another embodiment.
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Citations
22 Claims
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1. A collision detection system comprising:
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a first sensor for sensing an object in a field of view and measuring a first range defined as the distance between the object and the first sensor;
a second sensor for sensing the object in the field of view and measuring a second range defined by the distance between the object and the second sensor; and
a controller for processing the first and second range measurements, said controller further estimating a crossing location of the object as a function of the first and second range measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of estimating a crossing location of an object, said method comprising the steps of:
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sensing the presence of an object in a field of view;
tracking the object with first and second sensors;
measuring range to the object with the first sensor;
measuring range to the object with the second sensor, wherein the first and second sensors are separate from each other; and
estimating a crossing location of the object as a function of the range measurements from the first and second sensors. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. The method as defined in claim 22 further comprising the step of generating a collision output signal as a function of the estimated crossing location.
Specification