Method for detecting tire properties of a vehicle

Abstract

A procedure with the following steps is proposed: a) providing a vehicle (1) with at least one vehicle tire (1) and a drive-over device (2) with a sensor system for detecting tire properties, b) moving the vehicle (1) in the direction of the crossing device (2), wherein the sensor system performs measurements at a measurement frequency in idle mode, c) detecting the front (3) of the vehicle (2) with the sensor system of the overrun device (2), where subsequently the sensor system receives the signal to increase the measuring frequency significantly to a high measuring frequency in the measuring mode, d) Driving over the drive-over device (2) with the individual vehicle tyres (4) of the vehicle, wherein the measurements of the vehicle tires (4) are carried out with the sensor system in measurement mode, e) Evaluating the measurement signals from the sensor system and forwarding the recorded tire properties.

Description

[0001] The invention relates to a method for detecting tire properties of a vehicle.

[0002] It is known to measure the tread depth of vehicle tires automatically using a measuring device. The data acquired by the measuring device is intended to be made available to the vehicle owner or fleet operator after each measurement.

[0003] The measuring device generally generates a large amount of data that must be stored and evaluated using a computer system.

[0004] The object of the invention was to provide a method with which the measurement data acquisition is optimized.

[0005] The task is solved using a procedure with the following steps: a) Providing a vehicle with at least one vehicle tyre and a drive-over device with a sensor system for detecting tyre properties, b) moving the vehicle towards the crossing device, wherein the sensor system performs measurements at a measurement frequency in idle mode, c) Detecting the front of the vehicle with the sensor system of the drive-over device, where subsequently the sensor system receives the signal to increase the measuring frequency significantly to a high measuring frequency in the measuring mode, d) Driving over the drive-over device with the individual vehicle tyres of the vehicle, whereby the measurements of the vehicle tires are carried out with the sensor system in measurement mode, e) Evaluating the measurement signals from the sensor system and forwarding the recorded tire properties.

[0006] A key advantage of the new method is that it significantly improves data acquisition with the sensor system. The method significantly reduces the amount of data generated and acquired by the sensor system. The sensor system only generates a large amount of measurement data during the time interval when the actual tire properties are to be measured with the sensor system. In idle mode, only a small amount of data is generated.

[0007] A further advantage of the new method is that the energy consumption of the sensor system is significantly reduced.

[0008] In an advantageous development of the invention, it is provided that the sensor system comprises a radar measuring system.

[0009] The radar system allows the front of the vehicle to be detected quickly and easily. It also allows certain tire characteristics to be determined with high accuracy.

[0010] In a further advantageous development of the invention, it is provided that the sensor system comprises a capacitive and / or inductive measuring system.

[0011] This measuring system allows certain tire properties to be determined with a high degree of accuracy.

[0012] In a further advantageous development of the invention, it is provided that the sensor system comprises a measuring system based on impedance measurements.

[0013] In a further advantageous development of the invention, it is provided that the sensor system comprises an optical measuring system.

[0014] The optical measuring system can, for example, include a measuring system with a laser.

[0015] In a further advantageous development of the invention, it is provided that the sensor system carries out measurements in idle mode with a measuring frequency of maximum 5 Hz.

[0016] This measuring frequency is optimal for reliably detecting the front of the vehicle.

[0017] In a further advantageous development of the invention, it is provided that when driving over the overrun device, the sensor system carries out measurements in the measuring mode with a measuring frequency of at least 50 Hz.

[0018] With this measurement frequency, the tire properties can be determined with a high degree of accuracy.

[0019] In a further advantageous development of the invention, it is provided that the overrun device comprises two separate measuring devices which are arranged at a distance from one another on a substrate.

[0020] The two measuring devices cover the road area over which the individual vehicle tires of the vehicle are moved.

[0021] In a further advantageous development of the invention, it is provided that the tread depth of the vehicle tire is determined using the drive-over device.

[0022] This makes it easy to monitor the tread depth of vehicle tires.

[0023] The invention is described in more detail below using an exemplary embodiment.

[0024] It shows: Fig. 1: an embodiment with a drive-over device Fig. 2: a process step in which the front of the vehicle is detected with the measuring system, Fig. 3: a process step in which the vehicle tire rolls over the drive-over device.

[0025] The Fig. 1 shows an embodiment with a vehicle 1 having a plurality of vehicle tires, in which the tread depth of the vehicle tires is determined with a drive-over device 2.

[0026] The figure shows how the vehicle 1 approaches the overrun device 2. The overrun device comprises two separate measuring devices that are arranged at a certain distance from each other. The measuring devices of the overrun device 2 comprise sensor systems that are equipped, for example, with a radar measuring system. The radar measuring system is located in the Fig. 1 in a sleep mode with a low measurement frequency. In sleep mode, for example, measurements are taken at a measurement frequency of less than 5 Hz.

[0027] The Fig. Figure 2 shows the process step in which the vehicle 2 has moved toward the drive-over device 2 and the front of the vehicle is detected. The front of the vehicle is detected using the drive-over device's measuring system. The measuring system then switches from a standby mode to a measuring mode. In the measuring mode, the measuring frequency is increased to a specific value, e.g., 50 Hz.

[0028] The Fig. Figure 3 shows the process step in which the vehicle tire 4 rolls over the drive-over device 2. During this process, certain tire properties, such as tread depth, are recorded using the sensor system. In the sensor system's measurement mode, for example, measurements are taken at a measurement frequency of 50 Hz. This measurement frequency allows the tire properties to be determined with high accuracy.

[0029] The measurement data can then be processed and made available to a user, for example the vehicle owner or a fleet operator. List of reference symbols 1 vehicle 2 Drive-over device with 2 measuring devices 3 Front of the vehicle 4 vehicle tires

Claims

[1] Method for detecting tire properties of a vehicle (1) comprising the following steps: a) providing a vehicle (1) with at least one vehicle tire (1) and a drive-over device (2) with a sensor system for detecting tire properties, b) moving the vehicle (1) in the direction of the overrun device (2), wherein the sensor system carries out measurements at a measuring frequency in idle mode, c) detecting the front (3) of the vehicle (2) with the sensor system of the overrun device (2), wherein the sensor system subsequently receives the signal to significantly increase the measuring frequency to a high measuring frequency in the measuring mode, d) driving over the overrun device (2) with the individual vehicle tyres (4) of the vehicle, whereby the measurements of the vehicle tyres (4) are carried out with the sensor system in measurement mode, e) Evaluating the measurement signals from the sensor system and forwarding the recorded tire properties. [2] Method according to claim 1, characterized by that the sensor system includes a radar measuring system. [3] Method according to one of the preceding claims, characterized by that the sensor system includes a capacitive and / or inductive measuring system. [4] Method according to one of the preceding claims, characterized by that the sensor system includes a measuring system based on impedance measurements. [5] Method according to one of the preceding claims, characterized by that the sensor system includes an optical measuring system. [6] Method according to one of the preceding claims, characterized by that the sensor system performs measurements in idle mode with a maximum measuring frequency of 5 Hz. [7] Method according to one of the preceding claims, characterized bythat when driving over the overrun device (2) the sensor system carries out measurements in measurement mode with a measuring frequency of at least 50 Hz. [8] Method according to one of the preceding claims, characterized by that the crossing device (2) comprises two separate measuring devices which are arranged at a distance from one another on a base. [9] Method according to one of the preceding claims, characterized by that the tread depth of the vehicle tyre (4) is determined using the drive-over device (2).

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