Anticipatory collision sensor system
First Claim
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1. An anticipatory object detection system comprising:
- a transducer device for transmitting a modulated carrier signal and receiving the reflected modulated carrier signal from an object;
a detection device for detecting a plurality of Doppler shifted harmonic components from said reflected modulated carrier signal;
a range determining device responsive to the amplitudes of at least two of said harmonic components being equal for determining the instantaneous range of said object and, a predetermined distance thereafter, to a predetermined difference between the amplitudes of at least two of said harmonic components;
a velocity measurement device, responsive to the frequency of at least one of said harmonic components, for determining the relative, instantaneous velocity of said object; and
a collision decision device, responsive to said range determining device and said velocity measurement device for indicating that a collision with said object is imminent before contact is made with said object.
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Abstract
An anticipatory object detection system includes a transducer device for transmitting a modulated carrier signal and receiving the reflected modulated carrier signal from an object; a detection device for detecting a plurality of Doppler shifted harmonic components from the reflected modulated carrier signal; a range determining device responsive to the amplitude of at least two of the harmonic components for determining the instantaneous range of the object; a velocity measurement device, responsive to the frequency of at least one of the harmonic components, for determining the relative, instantaneous velocity of the object.
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Citations
29 Claims
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1. An anticipatory object detection system comprising:
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a transducer device for transmitting a modulated carrier signal and receiving the reflected modulated carrier signal from an object; a detection device for detecting a plurality of Doppler shifted harmonic components from said reflected modulated carrier signal; a range determining device responsive to the amplitudes of at least two of said harmonic components being equal for determining the instantaneous range of said object and, a predetermined distance thereafter, to a predetermined difference between the amplitudes of at least two of said harmonic components; a velocity measurement device, responsive to the frequency of at least one of said harmonic components, for determining the relative, instantaneous velocity of said object; and a collision decision device, responsive to said range determining device and said velocity measurement device for indicating that a collision with said object is imminent before contact is made with said object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification