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Sensor Units for Vehicles

A technology of sensor components and control units, applied in the direction of registering/indicating the operation of vehicles, vehicle components, instruments, etc., can solve the problems of personnel and property damage, driver forgetting to check, etc.

Active Publication Date: 2018-05-29
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet this check by the driver is often forgotten
If the wheel bolts come loose while driving, this can lead to serious accidents with huge personal and property damage

Method used

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  • Sensor Units for Vehicles
  • Sensor Units for Vehicles
  • Sensor Units for Vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] like Figure 1 to Figure 5 The shown exemplary embodiment of the sensor arrangement according to the invention for a vehicle 1 comprises a plurality of rotational speed detection devices 20 , 22 , 24 , 26 , 28 which in the illustrated exemplary embodiment are embodied as magnetic rotational speed The acquisition devices 20 , 22 , 24 , 26 , 28 and continuously acquire at least one state variable S of the magnetic field M and transmit it to an evaluation and control unit 10 arranged centrally in the vehicle 1 . In addition if figure 2 and image 3As shown, an evaluation and control unit 100 can be assigned to each rotational speed detection device 20 as an alternative. At least one evaluation and control unit 10 , 100 receives signals from at least one rotational speed detection device 20 , 22 , 24 , 26 , 28 and evaluates these signals. In a first evaluation process 12 , at least one evaluation and control unit 10 , 100 ascertains the rotational speed ω of at least on...

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PUM

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Abstract

The invention relates to a sensor arrangement for a vehicle (1) having at least one speed detection device (20, 22, 24, 26, 28) which continuously detects at least one state variable and sends it to at least one An evaluation and control unit (10), the at least one evaluation and control unit receives and evaluates a signal sent by at least one rotational speed detection device (20, 22, 24, 26, 28), wherein the at least one evaluation and control unit (10) Using the at least one detected state variable, a first evaluation process (12) is carried out and the rotational speed of at least one wheel (30) is ascertained, the rim of which is fastened to the associated hub by means of a wheel fastening. According to the invention, at least one evaluation and control unit (10) executes a second evaluation process (14) and identifies and monitors a mechanical play between at least one wheel (30) and the corresponding hub on the basis of at least one state variable acquired continuously to Detects loose wheel mounts.

Description

technical field [0001] The invention relates to a sensor unit for a vehicle of the kind according to independent claim 1 . Background technique [0002] Often the wheel bolts are tightened, for example when a tire is changed in a factory, and have to be tightened again by the driver after a driving distance (usually 80 km is recommended). However, this check by the driver is often forgotten. If the wheel bolts come loose while driving, this can lead to serious accidents with huge personal and property damage. The term "wheel bolt" is used hereinafter as the fastening element of the rim, so that embodiments of the invention are likewise applicable when the fastening function is implemented by a wheel bolt and a corresponding wheel nut. [0003] In the field of wheels, sensors for detecting wheel speed and / or for detecting tire pressure are known from the prior art. No system is known for recognizing loose wheel bolts during normal driving of the vehicle. [0004] From JP ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/013
CPCG01M17/013G07C5/08B60Q9/00G07C5/0808B60C9/00
Inventor S·施泰因勒希纳J·朔因C·施罗伊德
Owner ROBERT BOSCH GMBH