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Sensor unit for a vehicle

A sensor assembly, vehicle technology, applied in the registration/indication of vehicle operation, vehicle components, instruments, etc., to solve problems such as driver forgetting to check, personnel and property damage, etc.

Active Publication Date: 2016-03-30
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 unit for a vehicle
  • Sensor unit for a vehicle
  • Sensor unit for a vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as 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...

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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 rotation-speed detection apparatus (20, 22, 24, 26, 28), which continuously detects at least one state variable and outputs said state variable to at least one evaluation and control unit (10) which receives and evaluates signals which are output by at least one rotation-speed detection apparatus (20, 22, 24, 26, 28), wherein the at least one evaluation and control unit (10) carries out a first evaluation process (12) with the detected at least one state variable and ascertains a rotation speed of at least one vehicle wheel (30), the rim of said vehicle wheel being fastened to a corresponding wheel hub by means of wheel fastening means. According to the invention, the at least one evaluation and control unit (10) carries out a second evaluation process (14) and identifies and monitors, on the basis of the continuously detected at least one state variable, mechanical play between the at least one vehicle wheel (30) and the corresponding wheel hub in order to detect detached wheel fastening means.

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 JP2...

Claims

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Application Information

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Patent Type & Authority Applications(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