HITCH ANGLE ESTIMATION
First Claim
1. A system for estimating hitch angle between a trailer having a transmitter disposed thereon coupled to a vehicle having a trailer mount and a receiver disposed on the vehicle a first distance from the trailer mount, comprising:
- a controller to calculate a second distance between the transmitter and the receiver as a function of path loss propagation and estimating a hitch angle using the first distance, the second distance and a trailer length.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for estimating hitch angle between a vehicle and a trailer coupled thereto. The system has a wireless receiver on the vehicle located a predetermined distance from a trailer mount, a wireless transmitter located at an end of the trailer opposite the trailer mount, and a controller for monitoring power returns of a signal transmitted from the transmitter to the receiver and for estimating a distance between the transmitter and the receiver as a function of a path loss propagation of the transmitted signal. The bitch angle is estimated using the estimated distance, the predetermined distance and a trailer length.
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Citations
13 Claims
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1. A system for estimating hitch angle between a trailer having a transmitter disposed thereon coupled to a vehicle having a trailer mount and a receiver disposed on the vehicle a first distance from the trailer mount, comprising:
a controller to calculate a second distance between the transmitter and the receiver as a function of path loss propagation and estimating a hitch angle using the first distance, the second distance and a trailer length. - View Dependent Claims (2, 3)
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4. A method executed by a controller on a vehicle for calculating an angle between a vehicle and a trailer coupled thereto, comprising:
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monitoring power returns of a signal transmitted from a transmitter at one end of the trailer to a receiver on the vehicle located a first distance from a trailer mount; estimating a second distance between the transmitter and the receiver, the second distance being a function of a path loss propagation of the transmitted signal; calculating an angle between the vehicle and the trailer using the second distance, the first distance and a trailer length; and outputting the calculated angle to a vehicle system. - View Dependent Claims (5, 6, 7, 8)
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9. A hitch angle estimation system for a vehicle having a trailer mount and a receiver disposed thereon a first distance from the trailer mount, the vehicle being coupled to a trailer having a transmitter, comprising:
a controller that monitors power returns of a signal transmitted between the transmitter and the receiver as a function of path loss propagation of the transmitted signal and estimates a distance between the transmitter and the receiver, the controller calculates a hitch angle using the first distance, the estimated distance and a trailer length. - View Dependent Claims (10, 11, 12, 13)
Specification