POLARAMETRIC BLIND SPOT DETECTOR WITH STEERABLE BEAM
First Claim
1. A blind spot detector for a vehicle comprising:
- a transmitter generating a circularly polarized signal into the blind spot;
a receiver receiving a reflection of said circularly polarized signal, said reflection being circularly polarized opposite said circularly polarized signal, said blind spot detector detecting the presence of an object in the blind spot based upon said receiver receiving said reflection.
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Accused Products
Abstract
A blind spot detection system includes a transmitter directing a circularly polarized signal into a blind spot adjacent a vehicle. A receiver also mounted on the vehicle receives a reflection of the circularly polarized signal which is oppositely circularly polarized. An indicator indicates to the driver of the vehicle when the reflected signal is detected, thereby indicating the presence of an object in the blind spot. An indicator is also directed toward the blind spot generating a warning when the presence of an object in the blind spot is detected and an indication of a turn or lane change by the vehicle is detected, such as turn signal switch activation.
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Citations
21 Claims
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1. A blind spot detector for a vehicle comprising:
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a transmitter generating a circularly polarized signal into the blind spot;
a receiver receiving a reflection of said circularly polarized signal, said reflection being circularly polarized opposite said circularly polarized signal, said blind spot detector detecting the presence of an object in the blind spot based upon said receiver receiving said reflection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A blind spot warning system for a vehicle comprising:
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a blind spot detector determining the presence of an adjacent vehicle in a blind spot; and
an indicator directed toward the blind spot indicating the presence of the adjacent vehicle in the blind spot. - View Dependent Claims (11, 12, 13)
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14. A method for detecting the presence of an object adjacent a vehicle including the steps of:
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a) generating a circularly polarized signal into a spot adjacent the vehicle;
b) receiving a reflection of said circularly polarized signal, said reflection being circularly polarized opposite said circularly polarized signal; and
c) detecting the presence of the object in the spot based upon said step b). - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification