US 11,981,168 B2
Apparatus and method for providing tire information
Han Seon Ga, Gyeonggi-do (KR); Joon Sang Jo, Gyeonggi-do (KR); Hyun Dong Her, Seoul (KR); Myung Ki Yeom, Incheon (KR); and Ju Yong Kang, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Mar. 31, 2020, as Appl. No. 16/835,924.
Claims priority of application No. 10-2019-0103860 (KR), filed on Aug. 23, 2019.
Prior Publication US 2021/0053403 A1, Feb. 25, 2021
Int. Cl. B60C 23/06 (2006.01); G07C 5/00 (2006.01); G07C 5/08 (2006.01)
CPC B60C 23/062 (2013.01) [G07C 5/006 (2013.01); G07C 5/0808 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An apparatus for providing tire information, comprising:
a detector configured to detect driving information as a vehicle is being driven; and
a controller configured to calculate a relative speed of a tire of the vehicle and a resonance frequency of the tire based on the driving information when a tire pressure detection mode is entered and compare the calculated relative speed and the calculated resonance frequency with a previously learned determination reference value to determine whether the tire is deflated,
wherein the relative speed includes a first relative speed between a front wheel and a left rear wheel, a second relative speed between the left rear wheel and a right rear wheel, and a third relative speed between the right rear wheel and the front wheel, when the tire includes the one front wheel, the left rear wheel, and the right rear wheel,
wherein the first relative speed is calculated by dividing a difference between a wheel speed of the front wheel and a wheel speed of the left rear wheel by a speed of the vehicle detected using a speed sensor included in the detector,
wherein the second relative speed is calculated by dividing a difference between the wheel speed of the left rear wheel and a wheel speed of the right rear wheel by the speed of the vehicle detected using the speed sensor included in the detector,
wherein the third relative speed is calculated by dividing a difference between the wheel speed of the right rear wheel and the wheel speed of the front wheel by the speed of the vehicle detected using the speed sensor included in the detector,
wherein the controller is configured to output a warning in response to determining that the tire is deflated;
wherein the controller is configured to enter a learning mode and learn the determination reference value when an input signal is input to an input device;
wherein the controller is configured to determine whether the learning is completed, when the input signal is not input from a user,
wherein the controller is configured to enter the tire pressure detection mode when the learning is completed,
wherein the controller is configured to output the warning via an output device in response to determining that at least one of three tires is deflated,
wherein the determination reference value includes a first relative speed determination reference value, a second relative speed determination reference value, and a third relative speed determination reference value, which are learned after the first relative speed, the second relative speed, and the third relative speed are calculated based on the driving information collected during the particular time period after the input signal is input from the user, when the tire includes the one front wheel, the left rear wheel, and the right rear wheel; and
wherein the controller is configured to identify the tire pressure without having a tire pressure sensor to manage tire pressure of a three wheeled mobility.