Patent application number | Description | Published |
20100191392 | APPARATUS FOR LOCATING A VEHICLE ELECTRONIC KEY - An apparatus is provided for locating a vehicle electronic key including a fob for receiving a low frequency signal, measuring the low frequency signal strength, and providing a radio frequency response signal, a portion of the response signal including the signal strength determination. A low frequency antenna is located within the vehicle cabin for providing the low signal. A controller receives the response signal and compares the signal strength against a predetermined threshold. A vehicle engine immobilizer is responsive to the controller where the controller controls the immobilizer in response to the comparison. | 07-29-2010 |
20120059551 | METHOD AND APPARATUS FOR DETERMINING TIRE POSITION ON A VEHICLE - An apparatus determines a position of a tire on a vehicle including a tire-based sensing unit, each tire on the vehicle having an associated tire-based sensing unit. Each tire-based sensing unit includes a first sensor mounted for rotation with the tire and for generating a first sensor signal indicative of such rotation, a second sensor mounted for rotation with the tire and for generating a second sensor signal indicative of such rotation, and a transmitter for transmitting a signal indicative of a phase relationship between the first and second sensor signals. An axle position sensor is provided for determining each tire-based sensing unit position relative to a front and rear axle of the vehicle and provides an axle position signal for each tire-based sensing unit. A controller monitors the transmitted phase signals of each tire-based sensing unit and the determines axle position signals. The controller compares the tire-based sensing unit phase relationships for possible tire locations considering the determined axle positions of the tire-based sensing units, determines a confidence value by weighting the compared phase relationships, compares the phase difference of each tire-based sensing unit relative to the phase difference of other tire-based sensing units for each possible vehicle tire location, and associates each tire-based sensing unit with a vehicle location in response to the confidence values. | 03-08-2012 |
20130218364 | METHOD AND APPARATUS FOR DETERMINING A CONDITION AND RELATIVE LOCATION OF AN INNER TIRE AND AN OUTER TIRE OF A TIRE PAIR - An apparatus determines a condition and relative location of an inner tire and an outer tire of a tire pair. Each tire has an associated tire-based sensor assembly that senses a tire condition, senses acceleration, and transmits, in response to its associated acceleration signal, having a unique tire identification and associated sensed tire condition. A tire rotation sensor senses rotation of the tire pair during vehicle movement and provides a tire rotation signal indicative thereof. A vehicle-based controller associates each of the unique identification signals with one of the inner tire location and the outer tire location responsive to a phase relationship between the received transmitted signals from the tire-based sensor assemblies and the tire rotation signal. | 08-22-2013 |
20140039752 | METHOD AND APPARATUS FOR DETERMINING TIRE CONDITION USING IDEAL GAS LAW - An apparatus is provided for determining a tire operating condition including a tire-based sensor for sensing tire pressure and temperature and transmitting a signal indicative thereof and a vehicle ignition system. A vehicle-based receiver/controller is provided for receiving the signal from the tire-based sensor and for detecting the state of the vehicle ignition system. The controller provides an error signal when the sensed tire pressure is less than a set threshold value P | 02-06-2014 |
20140207329 | METHOD AND APPARATUS FOR DETERMINING TIRE CONDITION AND LOCATION USING WHEEL SPEED SENSORS AND ACCELERATION SENSORS - A tire condition sensing apparatus includes a tire-based sensor for sensing two relative rotational positions of its associated tire relative to the earth's horizon as the tire rotates and provides first and second signals indicative thereof. A transmitter for transmits tire condition information and a signal processing time delay value in response to the first and second signals. A vehicle-based sensor monitors tire rotation relative to the vehicle's chassis and provides a signal indicative thereof. A controller for monitors the transmitted tire condition information signal, the signal processing time delay value, and the signal from the vehicle-based sensor and associates tire location in response thereto. | 07-24-2014 |
20150088369 | METHOD AND APPARATUS FOR DETERMINING TIRE CONDITION AND LOCATION USING WHEEL SPEED SENSORS AND ACCELERATION SENSORS - A tire condition sensing apparatus includes a tire-based sensor for sensing two relative rotational positions of its associated tire relative to the earth's horizon as the tire rotates and provides first and second signals indicative thereof. A transmitter for transmits tire condition information and a signal processing time delay value in response to the first and second signals. A vehicle-based sensor monitors tire rotation relative to the vehicle's chassis and provides a signal indicative thereof. A controller for monitors the transmitted tire condition information signal, the signal processing time delay value, and the signal from the vehicle-based sensor and associates tire location in response thereto. | 03-26-2015 |