# US 2014/0195107 A1 · Wheel localizer, wheel localization device, system, method and computer program for locating a position of a wheel

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- Number: US 2014/0195107 A1
- Document ID: US20140195107A1
- Status: Published application
- Kind: A1
- Application number: 13/738,502
- Filed: 2013-01-10
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Infineon Technologies AG
- Applicants: Infineon Technologies AG
- Inventors: Joo Il Park; Thomas Lange; Karine Pillet; Myungkil Kim
- Web page: https://patentgrep.com/patent/US20140195107A1

## CPC

- B60C 23/0416: {allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right}
- B60C 23/0488: {Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force}
- B60C 23/0489: {for detecting the actual angular position of the monitoring device while the wheel is turning}
- B60C 23/0459: {self triggered by motion sensor}
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES

## Abstract

Embodiments can provide a system, a wheel localizer, a wheel localization device, a method or a computer program for locating a position of wheel and/or for determining an acceleration of a wheel of a vehicle. The system for locating a position of at least one out of a plurality of wheels of a vehicle includes a detector configured to obtain information related to a tangential acceleration of the at least one wheel of the vehicle and an antilock braking system unit configured to obtain information related to angular rotations of the plurality of wheels. The system further includes a locator configured to determine the position of the at least one wheel based on the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels.

## Claims

### Claim 1

A system for locating a position of at least one out of a plurality of wheels of a vehicle, comprising:
a detector configured to obtain information related to a tangential acceleration of the at least one wheel of the vehicle;
an antilock braking system unit configured to obtain information related to angular rotations of the plurality of wheels; and
a locator configured to determine the position of the at least one wheel based on the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels.

### Claim 2 (depends on 1)

The system of claim 1, wherein the locator is configured to obtain the position of the at least one wheel further based on predetermined positions associated with the plurality of wheels and the information related to the angular rotations of the plurality of wheels.

### Claim 3 (depends on 1)

The system of claim 1, wherein the detector comprises an acceleration sensor for sensing information related to the tangential acceleration of the at least one wheel of the vehicle.

### Claim 4 (depends on 3)

The system of claim 3, wherein the acceleration sensor comprises a one dimensional sensor or a linear sensor, or both.

### Claim 5 (depends on 1)

The system of claim 1, wherein the locator is configured to determine the position of the at least one wheel by determining information related to a correlation of the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels of the vehicle.

### Claim 6 (depends on 1)

The system of claim 1, wherein the antilock braking system unit comprises one or more antilock braking system sensors configured to obtain the information related to the angular rotations of the plurality of wheels.

### Claim 7 (depends on 1)

The system of claim 1, wherein the detector is further configured to obtain information related to a tire pressure of the at least one wheel and wherein the locator is further configured to associate the information related to the tire pressure with the position of the at least one wheel.

### Claim 8 (depends on 7)

The system of claim 7, wherein the detector further comprises a tire pressure sensor.

### Claim 9 (depends on 1)

The system of claim 1, wherein the detector is further configured to transmit information using a radio signal and wherein the locator is further configured to receive information from the radio signal.

### Claim 10

A wheel localizer for locating a position of at least one out of a plurality of wheels of a vehicle, comprising
a detector configured to provide an acceleration signal comprising information related to a tangential acceleration of the at least one wheel of the vehicle;
an antilock braking system unit configured to provide a rotation signal comprising information related to angular rotations of the plurality of wheels; and
a locator configured to receive the acceleration signal and the rotation signal and being further configured to provide a position signal comprising information related to the position of the at least one wheel based on the acceleration signal and the rotation signal.

### Claim 11 (depends on 10)

The wheel localizer of claim 10, wherein the locator is configured to provide the position signal further based on predetermined positions associated with the plurality of wheels and the information related to the angular rotations of the plurality of wheels.

### Claim 12 (depends on 10)

The wheel localizer of claim 10, wherein the detector comprises an acceleration sensor configured to sense information related to the tangential acceleration of the at least one wheel of the vehicle.

### Claim 13 (depends on 12)

The wheel localizer of claim 12, wherein the acceleration sensor comprises a one dimensional sensor or a linear sensor, or both.

### Claim 14 (depends on 10)

The wheel localizer of claim 10, wherein the locator is configured to determine the information related to the position of the at least one wheel by determining information related to a correlation of the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels of the vehicle.

### Claim 15 (depends on 10)

The wheel localizer of claim 10, wherein the antilock braking system unit comprises one or more antilock braking system sensors configured to obtain the rotation signal.

### Claim 16 (depends on 10)

The wheel localizer of claim 10, wherein the locator is further configured to receive a pressure signal comprising information related to a tire pressure of the at least one wheel, and wherein the locator is further configured to associate the information related to the tire pressure with the position signal.

### Claim 17 (depends on 16)

The wheel localizer of claim 16, wherein the detector further comprises a tire pressure sensor for generating the pressure signal.

### Claim 18 (depends on 10)

The wheel localizer of claim 10, wherein the detector is further configured to transmit information using a radio signal and wherein the locator is further configured to receive the information from the radio signal.

### Claim 19

A wheel localization device for locating a position of at least one out of a plurality of wheels of a vehicle, comprising
one or more inputs configured to receive a first signal comprising information related to a tangential acceleration of the at least one wheel of the vehicle and configured to receive one or more second signals comprising information related to angular rotations of the plurality of wheels; and
an output configured to provide an output signal comprising information related to the position of the wheel, wherein the output signal is based on the first signal comprising the information related to the tangential acceleration of the at least one wheel of the vehicle and on the one or more second signals comprising the information related to the angular rotations of the plurality of wheels.

### Claim 20 (depends on 19)

The wheel localization device of claim 19, wherein the output signal comprises information related to an association of the first signal to one of the angular rotations of the plurality of wheels.

### Claim 21

A system for determining an acceleration of a wheel of a vehicle, comprising
an acceleration sensor configured to determine information related to an acceleration of the wheel;
a memory unit configured to store information related to the acceleration of the wheel; and
a control unit configured to compare stored information related to a past acceleration of the wheel with recent information related to a recent acceleration of the wheel received from the acceleration sensor, wherein the control unit is configured to operate the system in a standby mode when the stored information differs from the recent information by less than a predetermined threshold.

### Claim 22

A method for locating a position of at least one out of a plurality of wheels of a vehicle, comprising:
obtaining information related to a tangential acceleration of the at least one wheel of the vehicle;
obtaining information related to angular rotations of the plurality of wheels; and
determining the position of the at least one wheel based on the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels.

### Claim 23 (depends on 22)

The method of claim 22, further comprising obtaining the position of the at least one wheel further based on predetermined positions associated with the plurality of wheels and the information related to the angular rotations of the plurality of wheels.

### Claim 24 (depends on 22)

The method of claim 22, further comprising determining the position of the at least one wheel by determining information related to a correlation of the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels of the vehicle.

### Claim 25 (depends on 22)

The method of claim 22, further comprising obtaining information related to a tire pressure of the at least one wheel and associating the information related to the tire pressure with the position of the at least one wheel.

### Claim 26 (depends on 22)

The method of claim 22, further comprising transmitting information using a radio signal and receiving the information from the radio signal.

### Claim 27

A computer program having a program code on a non-transitory media for performing, when the computer program is executed on a computer or on a processor, a method for locating a position of at least one out of a plurality of wheels of a vehicle, comprising:
obtaining information related to a tangential acceleration of the at least one wheel of the vehicle;
obtaining information related to angular rotations of the plurality of wheels; and
determining the position of the at least one wheel based on the information related to the tangential acceleration of the at least one wheel and the information related to the angular rotations of the plurality of wheels.
