About 52 results
https://drivepatents.com/patents/1386258 · 29 Apr 2026
Provided are a method and system for monitoring indirectly a tire pressure applicable to a complex drive working condition. The method includes: S1, obtaining an independent tire speed time stamp signal of each tire of a vehicle, calculating a real-time ro...
https://drivepatents.com/patents/1394396 · 16 Oct 2024
Change in a regression formula for correcting a rotation speed is found early. A correction device includes a rotation speed acquisition unit, a comparison value calculation unit, a torque acquisition unit, a regression formula specification unit, a rotati...
https://drivepatents.com/patents/974879 · 14 May 2014
An apparatus for detecting a decrease in tire pressure based on a resonance frequency of a tire installed in a vehicle. The apparatus includes rotation information detection means for detecting rotation information of the tire, resonance frequency estimate...
https://drivepatents.com/patents/984965 · 24 Apr 2013
A method for detecting a tire having a decreased air pressure based on wheel rotation information to be obtained from the tire attached to a vehicle in which there is a predetermined difference between a front wheel load and a rear wheel load. The method i...
https://drivepatents.com/patents/995366 · 5 Dec 2012
A system for detecting deflated tires by making a relative comparison among rotation speeds of tires attached to a vehicle. The system includes a rotation speed information detection means for detecting rotation speed information of the tires; a rotation s...
https://drivepatents.com/patents/995353 · 5 Dec 2012
An system for detection of deflated tires based on a resonance frequency of tires with a vehicle and a relative comparison value of rotation speeds of the tires. The system includes: a rotation information detection means for detecting rotation information...
https://drivepatents.com/patents/997091 · 17 Oct 2012
A system for determining if a tire of a vehicle is improperly inflated. The system includes a radar (145), a wheel speed sensor (125), and a controller (150). The radar (145) is configured to emit a signal generally parallel to a surface the vehicle is tra...
https://drivepatents.com/patents/999536 · 8 Aug 2012
A method of detecting a decrease in tire air pressure based on wheel rotation information obtained from tires attached to a 4-wheel vehicle. The method includes: a step of calculating tire rotation information obtained from the respective wheel tires; a st...
https://drivepatents.com/patents/1002150 · 23 May 2012
A method for detecting a decrease in tire air pressure based on wheel rotation speed information obtained from tires attached to a four-wheel vehicle. The method includes: a wheel rotation speed information detection step for detecting wheel rotation speed...
https://drivepatents.com/patents/1007563 · 30 Nov 2011
A method of detecting a tire having a decreased internal pressure by making a relative comparison among wheel speeds of tires attached to the respective wheels. The method includes a step of detecting wheel rotation information regarding the respective tir...