System and method for remote tire pressure monitoring
First Claim
1. A system for remote monitoring of tire pressure in a vehicle having a plurality of tires, the system comprising:
- a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure, and a transmitter for transmitting a wireless signal representative of the sensed tire pressure; and
a receiver for mounting on-board the vehicle for receiving the tire pressure signals, the receiver having at least an inactive state when the vehicle is off;
wherein a tire pressure signal transmitted by a transmitter has associated therewith a wake-up signal when the vehicle has been stationary for a predetermined time period, the wake-up signal being provided to ensure receipt by the receiver of the tire pressure signal when the receiver is in the inactive state, and wherein a tire pressure signal transmitted by a transmitter lacks an associated wake-up signal at least once when the vehicle has not been stationary for the predetermined time period.
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Accused Products
Abstract
A system and method for monitoring vehicle tire pressure. A tire pressure monitor for each tire includes a pressure sensor for sensing tire pressure, a transmitter for transmitting a tire pressure signal representative of the sensed tire pressure, and a batter providing power to the transmitter. To conserve battery power, each tire pressure signal transmitted by the transmitters includes a wake-up signal only when the vehicle has been stationary for a predetermined time period. The wake-up signal ensures receipt of the tire pressure signal by a vehicle mounted receiver alternating between active state and inactive states.
145 Citations
28 Claims
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1. A system for remote monitoring of tire pressure in a vehicle having a plurality of tires, the system comprising:
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a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure, and a transmitter for transmitting a wireless signal representative of the sensed tire pressure; and a receiver for mounting on-board the vehicle for receiving the tire pressure signals, the receiver having at least an inactive state when the vehicle is off; wherein a tire pressure signal transmitted by a transmitter has associated therewith a wake-up signal when the vehicle has been stationary for a predetermined time period, the wake-up signal being provided to ensure receipt by the receiver of the tire pressure signal when the receiver is in the inactive state, and wherein a tire pressure signal transmitted by a transmitter lacks an associated wake-up signal at least once when the vehicle has not been stationary for the predetermined time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 23, 24)
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8. A method for remote monitoring of tire pressure in a vehicle having a plurality of tires, the method comprising:
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providing a plurality of tire monitors, each monitor for mounting in one of the plurality of tires, each monitor comprising a sensor for sensing tire pressure and a transmitter for transmitting a wireless signal representative of the sensed tire pressure; wherein a tire pressure signal transmitted by a transmitter has associated therewith a wake-up signal when the vehicle has been stationary for a predetermined time period, the wake-up signal being provided to ensure receipt of the tire pressure signal by a vehicle mounted receiver in an inactive state, and wherein a tire pressure signal transmitted by a transmitter lacks an associated wake-up signal at least once when the vehicle has not been stationary for the predetermined time period. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for remote monitoring of tire pressure in a vehicle, the method comprising:
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transmitting from a tire mounted transmitter a wireless signal representative of a sensed tire pressure; and placing a vehicle mounted receiver for receiving the tire pressure signal in at least an inactive state when the vehicle is off; wherein the tire pressure signal has associated therewith a wake-up signal when the vehicle has been stationary for a predetermined time period, the wake-up signal being provided to ensure receipt by the receiver of the tire pressure signal when the receiver is in the inactive state, and wherein a tire pressure signal transmitted by a transmitter lacks an associated wake-up signal at least once when the vehicle has not been stationary for the predetermined time period. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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25. A method for remote monitoring of tire pressure in a vehicle having a plurality of tires, the method comprising:
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providing a receiver for mounting on-board the vehicle for receiving wireless signals representative of a sensed tire pressure, the receiver having at least an inactive state when the vehicle is off; wherein each of the plurality of tires has a tire monitor for use in transmitting wireless tire pressure signals; and wherein a tire pressure signal has associated therewith a wake-up signal when the vehicle has been stationary for a predetermined time period, the wake-up signal being provided to ensure receipt by the receiver of the tire pressure signal when the receiver is in the inactive state, and wherein a tire pressure signal transmitted by a transmitter lacks an associated wake-up signal at least once when the vehicle has not been stationary for the predetermined time period. - View Dependent Claims (26, 27, 28)
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Specification