System and method for remote tire pressure monitoring
AssigneeLear Corporation
InventorsRonald O. King, John S. Nantz, Qingfeng Tang
Life of this patent
Estimating the term…
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.
Claims20
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, a transmitter for transmitting a wireless signal representative of the sensed tire pressure, and a battery for providing power to the transmitter;
- and
- a receiver for mounting on-board the vehicle for receiving the tire pressure signals, the receiver alternating between an active state and an inactive state when the vehicle is off to reduce a current drawn by the receiver;
- wherein, 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 being provided to ensure receipt by the receiver of the tire pressure signal when the receiver alternates between the active and inactive states.
A method for remote monitoring of tire pressure in a vehicle having a plurality of tires, the method comprising:
- 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, a transmitter for transmitting a wireless signal representative of the sensed tire pressure, and a battery for providing power to the transmitter;
- wherein, 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 being provided to ensure receipt of the tire pressure signal by a vehicle mounted receiver alternating between an active state and an inactive state.
A method for remote monitoring of tire pressure in a vehicle, the method comprising:
- transmitting from a tire mounted transmitter powered by a battery a wireless signal representative of a sensed tire pressure;
- and
- alternating a vehicle mounted receiver for receiving the tire pressure signal between an active state and an inactive state when the vehicle is off to reduce a current drawn by the receiver;
- wherein, to conserve battery power, the tire pressure signal includes a wake-up signal only 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 alternates between the active and inactive states.
Dependencies are inferred from the claim text.