About 52 results
https://drivepatents.com/patents/1096278 · 7 May 2003
The method involves producing periodic vibration as a speed output signal either in an axle or a wheel, proportional to the wheel rotating speed and feeding it to a signal processor. The method then superimposes the signal over a separately defined periodi...
https://drivepatents.com/patents/1096294 · 2 May 2003
A method for detecting decrease in tire air-pressure in which decrease in internal pressure of a tire is detected on the basis of rotational information. The method includes the steps of: detecting rotational information of the tires; storing the rotationa...
https://drivepatents.com/patents/1096605 · 23 Apr 2003
The method involves converting a sensor signal into a rectangular pulse signal, measuring each pulse duration and determining an especially weighted mean of duration of a current value and a preceding value. The values are separated by a time interval or d...
https://drivepatents.com/patents/1098121 · 26 Feb 2003
A method for detecting abnormalities of a tire which detects abnormalities of a tire on the basis of rotational information obtained from tires attached to wheels of a vehicle. The method includes the steps of: detecting rotational pulses of wheels of the ...
https://drivepatents.com/patents/1098282 · 19 Feb 2003
A method for detecting decrease in tire air-pressure for detecting decrease in internal pressure of a tire on the basis of rotational information obtained from tires attached to a vehicle. A threshold for judging decrease in air-pressure of following wheel...
https://drivepatents.com/patents/1100128 · 27 Nov 2002
Lowpass (S102,S105) and highpass (S103,S104) filters, having cutoff frequencies different from each other, are used to perform first to fourth filter processing (S102,S103,S104,S105). Then, product-sums of outputs of respective filter processing are obtain...
https://drivepatents.com/patents/1104678 · 8 May 2002
An apparatus for alarming decrease in tyre air pressure comprising a rotational information detecting means for detecting rotation information of the respective tyres (Wi); a rotational information memory means; a judged value calculating means for calcula...
https://drivepatents.com/patents/1105722 · 27 Mar 2002
An apparatus for alarming decrease in tyre air pressure which detects the decrease in internal pressure of the tyre based on wheel speed information obtained from wheels (FL, FR, RL, RR) of a vehicle and accordingly alarms a driver. The apparatus comprises...
https://drivepatents.com/patents/1107059 · 23 Jan 2002
An apparatus for alarming decrease in tyre air pressure which alarms decrease of internal pressure of a tyre on the basis of a rotational information. The apparatus comprises rotational information detecting means (1) ; memory means for storing the rotatio...
https://drivepatents.com/patents/1108394 · 21 Nov 2001
The method involves determining the angular speeds of the individual wheels (1-4) of the vehicle using revolution rate sensors on each wheel. A vehicle motion signal, from which the vehicle's yaw rate (wG) is derived, is determined using at least one furth...