Vehicle speed sensor for navigation system
First Claim
Patent Images
1. A vehicle navigation system, comprising:
- a wireless transmitter including a power source generating a wireless signal indicative of a vehicle displacement that periodically transmits said signal;
a wireless receiver receiving said wireless signal from said transmitter; and
a processor associated with said receiver for calculating the vehicle position based upon signals from a position determining device and said wireless signals indicative of said vehicle displacement.
6 Assignments
0 Petitions
Accused Products
Abstract
A vehicle navigation system includes a vehicle displacement sensor comprising a wireless transmitter generating a signal indicating rotational displacement of a vehicle component. A complementary wireless transmitter receives the signal from the transmitter. A computer calculates vehicle speed or displacement based upon the rotational speed or displacement of the vehicle component. In a preferred embodiment, the transmitter is secured to a wheel of the vehicle and generates an RF signal upon each revolution of the wheel.
-
Citations
33 Claims
-
1. A vehicle navigation system, comprising:
-
a wireless transmitter including a power source generating a wireless signal indicative of a vehicle displacement that periodically transmits said signal; a wireless receiver receiving said wireless signal from said transmitter; and a processor associated with said receiver for calculating the vehicle position based upon signals from a position determining device and said wireless signals indicative of said vehicle displacement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A vehicle navigation system, comprising:
-
means for generating a wireless signal indicative of rotational displacement of a vehicle part which periodically transmits said wireless signal; a wireless receiver receiving said wireless signal; means for determining displacement of a vehicle based upon said wireless signal; and means for calculating the vehicle position based upon signals from a position determining device and said wireless signals indicative of said vehicle displacement. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A vehicle navigation system comprising:
-
means for generating a wireless signal including a power source indicative of rotational displacement of a vehicle part which periodically transmits said wireless signal; a receiver receiving said wireless signal; and means for calculating the vehicle position based upon signals from a position determining device and said wireless signals indicative of said vehicle displacement. - View Dependent Claims (25, 26, 27, 28, 29)
-
-
30. A method for determining vehicle displacement including the steps of:
-
generating a wireless signal indicative of rotational displacement of a vehicle part which periodically transmits said wireless signal; receiving said wireless signal; determining displacement of a vehicle based upon said wireless signal; and means for calculating the vehicle position based upon signals from a position determining device and said wireless signals indicative of said vehicle displacement. - View Dependent Claims (31, 32, 33)
-
Specification