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Method and device for determining rotation frequency of wheel of vehicle

A technology of rotation frequency and wheels, applied in the field of determination of rotation frequency, can solve the problem that the speed is not accurate enough

Pending Publication Date: 2022-03-08
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the determined velocity is not accurate enough to perform a frequency analysis of the signal transmitted by the accelerometer to determine the vibration produced by the wheel

Method used

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  • Method and device for determining rotation frequency of wheel of vehicle
  • Method and device for determining rotation frequency of wheel of vehicle
  • Method and device for determining rotation frequency of wheel of vehicle

Examples

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Embodiment Construction

[0041] refer to figure 1 , which represents an example of a wheel 1 of a vehicle.

[0042] A vehicle may be, for example, a truck, bus or trailer.

[0043] A device 2 for determining the rotational frequency of the wheel 1 is arranged on the wheel 1 .

[0044] The device 2 is for example fastened on the nut 3 of the wheel 1 and is at a first distance D1 from the center C1 of the wheel 1 .

[0045] figure 2 An example of an embodiment of the device 2 is disclosed.

[0046] The device 2 comprises first measuring means for measuring acceleration values ​​of the wheel 1 , second measuring means for measuring vibrations of the wheel 1 , and a processing unit 4 .

[0047] The first measurement means comprises eg an accelerometer 5 connected to the processing unit 4 and the second measurement means comprises eg a vibration sensor 6 connected to the processing unit 4 .

[0048] The device 2 may also comprise energy storage ( / energy storage / energy storage) means for supplying ( / p...

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Abstract

A device (2) for determining a rotational frequency of at least one wheel of a vehicle comprises: a first measuring means (5) for measuring an acceleration value of the at least one wheel; a second measuring means (6) for measuring vibrations of the at least one wheel; and a processing unit (4) configured to: determine a first rotational frequency of the at least one wheel from the measured acceleration values of the at least one wheel; comparing the determined first rotational frequency of the at least one wheel with a first threshold value; defining a frequency analysis interval when the determined first rotation frequency is greater than the first threshold value; processing a frequency analysis of a signal indicative of vibrations of the at least one wheel for frequencies within the frequency analysis interval; and selecting a second rotational frequency having a higher amplitude in the frequency analysis interval, the second rotational frequency being equal to the rotational frequency of the at least one wheel.

Description

technical field [0001] The present invention relates to the determination of the rotational frequency of a wheel, and more particularly to an apparatus and method for determining the rotational frequency of a vehicle wheel. Background technique [0002] In vehicles, such as trucks, buses or trailers, it is often necessary to monitor several elements in order to detect damage or wear. [0003] One of these elements may be, for example, a wheel used in a truck. In such wheels, bearings supporting the wheel may be provided with sensors which may be used to detect failure of such bearings. [0004] In order to miniaturize the sensor and reduce the cost of such a sensor, the sensor is configured to perform two functions. The sensors are configured to determine rotational speed of the wheel and to determine vibration of the wheel. [0005] Document US 2019 / 0329610 discloses a sensor comprising a piezoelectric element for measuring the vibration of a wheel and a determination un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/06G01M13/045
CPCB60C23/062G01M13/045G01P3/48G01P3/16
Inventor 达米恩·约克努克斯夏洛特·伍
Owner AB SKF
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