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Method for plausibility testing of at least one light detector of a headlight assistance device of a motor vehicle

A technology of an auxiliary device and a photodetector, which is applied in the field of reliability verification and can solve the problems of unreliable identification and inactivation of emergency operation, etc.

Inactive Publication Date: 2010-11-24
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has the disadvantage that a malfunction of such a system cannot be detected with 100% reliability and the corresponding emergency operation cannot be activated if necessary

Method used

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  • Method for plausibility testing of at least one light detector of a headlight assistance device of a motor vehicle
  • Method for plausibility testing of at least one light detector of a headlight assistance device of a motor vehicle
  • Method for plausibility testing of at least one light detector of a headlight assistance device of a motor vehicle

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Embodiment Construction

[0024] exist figure 1 An optical rain sensor device according to the invention is shown in , which works according to the principles described below.

[0025] An electromagnetic radiation source 6 , such as an infrared LED or the like, emits an electromagnetic beam 4 at a defined angle from the inside of the glass or windshield 1 , ie usually from the passenger compartment (not shown) of the motor vehicle in the direction of the windshield 1 . (so-called effective light), especially infrared light. The radiation beam 4 passes through the interface between the interior and the windshield 1 and is deflected at the interface 10 formed by the windshield 1 and the vehicle environment, which is referred to as the sensitive area in this region. The emission angle of the radiation source 6 is here approximately 40° (at figure 1 are greatly enlarged). As a rule, the light beams are parallel in windshield 1 . In this case, the angle of incidence of the electromagnetic beam 4 with re...

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Abstract

The invention relates to a method for plausibility testing at least one light detector (12a) of a headlight assistance device (12) of a motor vehicle. Electromagnetic radiation (4) emitted by a radiation source (6) of an optical rain sensor device of the motor vehicle is utilized as reference light.

Description

technical field [0001] The invention relates to a method for plausibility verification of at least one light detector of a driving light assistant of a motor vehicle. Furthermore, the invention relates to a computer program and a computer program product having program code segments for carrying out such a method. Background technique [0002] Driving light assistants or driving light assistants for motor vehicles are known in practice, which measure the light properties of the surrounding environment by means of light detectors or light sensors (ALS—Ambient Light Sensor: Ambient Light Sensor) and correspondingly Automatically turn on the low beam headlights of the motor vehicle at dusk / darkness. [0003] Similar vehicle sensor systems, in particular rain light sensors or rain sensor arrangements, often have a self-diagnosis function which is carried out repeatedly at cyclical time intervals during operation. The process is used to detect possible faults early and to infor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q1/14G05B23/02B60S1/08G01N21/55B60Q11/00
CPCG01N21/274B60S1/087B60S1/0837B60Q1/1423G01N21/552B60Q11/00B60Q2300/314
Inventor R·博查特B·霍达普K·梅科
Owner ROBERT BOSCH GMBH
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