System and method for determining at least one tyre contact area parameter characterising a dimension of a tyre contact area on a tyre of a wheel of a vehicle

A contact area and tire technology, applied in the system field of tire contact area parameters, can solve problems such as incorrect data signals, tire contact area generation problems, and data inapplicability based on the purpose of using these data.

CN107000503AActive Publication Date: 2017-08-01CONTINENTAL AUTOMOTIVE TECH GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-08-01

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Abstract

The invention relates to a system (10) for determining at least one tyre contact area parameter (L), comprising a sensor module (12) arranged on the tyre (1), which sensor module has a sensor (14) designed to accept a sensor signal (Us) which is dependent on a mechanical tyre load at a predetermined measuring point (16) on the tyre (1) and comprising a first evaluation device (18), designed to evaluate the sensor signal (Us) and the provision of data based thereupon, which data contain at least one data element which indicates at least one time point in the sensor signal (Us), said time point characterising a passage of the measuring point (16) through the tyre contact area, and comprising a second evaluation device (34) designed to calculate the tyre contact area parameter (L) by evaluating the data (D) provided by the first evaluation device (18). The first evaluation device (18) is designed to perform an analysis of the sensor signal (Us) on the basis of at least one predetermined evaluation criterion (S2, S3, S4) with respect to the signal quality of the sensor signal (Us), in order to provide quality information characterising the signal quality of the sensor signal (Us). The invention further relates to a corresponding determination method, a use of the system and / or of the method, and a computer program product.
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Description

technical field

[0001] The invention relates to a system and a method for determining at least one tire contact area parameter characterizing the size of the tire contact area (tire contact portion) on a tire of a wheel of a vehicle. Background technique

[0002] A method is known from DE 10 2010 016 551 A1 in which the contact patch length of a vehicle tire is determined by means of a tire module arranged on the inner side of the tire. The tire module contains deformation sensors and evaluates the deformation of the vehicle tire as it enters and leaves the ground contact patch and determines the contact patch length of the tire from this deformation. The relevant measurement of the length of the contact patch is sent to a central receiving unit in the vehicle, where it is evaluated by means of an algorithm to monitor the tread of the tire by means of long-term statistics carried out on the measured values depth.

[0003] From EP 2 774 784 A1 is known a method for determin...

Examples

Embodiment Construction

[0084] figure 1 An exemplary embodiment of a system 10 for determining at least one tire contact area parameter characterizing the size of the tire contact area on a tire 1 of a wheel 3 of a vehicle is shown.

[0085] The portion of the tire that is in contact with the ground (eg, the road surface) is called the tire contact patch. The resulting contact area (tire contact area) is also referred to as tire contact area and can be determined, for example, from its dimension in the longitudinal or rolling direction (contact area length) and, for example, in the transverse direction (contact area width ) representation.

[0086] In the exemplary embodiment shown, the vehicle is a figure 1 A four-wheeled motor vehicle of the type shown in , wherein the system 10 is used to determine the contact area length L of each wheel, and optionally determine additional wheel operating parameters (e.g., tire internal pressure, temperature, etc.) for each wheel .

[0087] In the following w...