Method for a functional test of a distance measurement system

A technology for distance measurement system and functional inspection, which is applied in the direction of radio wave measurement system, measurement device, and utilization of re-radiation, etc. It can solve the problems that the distance measurement system cannot be used for safety requirements, variation, total efficiency of the distance measurement system failure, etc.

Inactive Publication Date: 2008-12-10
ROBERT BOSCH GMBH
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Problems solved by technology

A disadvantage of the method described above is that although it is possible to check the functioning capabilities of the individual sensors or to check the first distance measuring system with a relatively high cost by means of a second distance measuring system, it is not possible to draw conclusions (for example due to slush, dirt on the sensors) Mud and / or stone impact) conclusions about the gradual failure of the distance measuring system or the deterioration of the overall efficiency, so that this distance measuring system cannot be used for safety-critical functions

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  • Method for a functional test of a distance measurement system
  • Method for a functional test of a distance measurement system

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Embodiment Construction

[0021] figure 1 A section of a motor vehicle 1 is shown schematically, which has a distance measuring system 3 on its rear bumper 2 for detecting obstacles in the vicinity of the motor vehicle 1 . The distance measuring system 3 has a sensor 5 formed from an ultrasonic sensor 4 which can both emit and receive signals. The emission range of the ultrasonic sensor 4 is indicated by, for example, two lines 6 , 7 . An obstacle 8 is located at a distance from the rear bumper 2 , which is located on the ground 9 of an uneven road 10 , shown here with an exaggerated unevenness, on which the motor vehicle 1 is likewise located.

[0022] In the present exemplary embodiment distance measuring system 3 is activated, so that ultrasonic sensor 4 detects the distance to obstacle 8 . In principle, the sensitivity of ultrasonic sensor 4 is set such that ground reflections of received signals reflected by ground 9 are suppressed, so that these reflections do not interfere with the distance me...

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Abstract

The present invention relates a method for a function test of a distance measurement system which is used for testing transportation facilities, especially, obstacles near vehicles, and has at least one sensor for receiving a reflection of transmitted signals. The present invention prescribes that the sensitivity of the sensor is enhanced at a certain time interval for testing the ground reflections, and the detected ground reflections are compared with each other.

Description

technical field [0001] The invention relates to a method for checking the function of a distance measuring system for detecting obstacles in the vicinity of a vehicle, in particular a motor vehicle, having at least one sensor which receives reflections of emitted signals. Background technique [0002] Methods are known in the aforementioned technical fields. The distance measuring system, which works without contact, is primarily used as a parking aid. One or more sensors are arranged in the rear and / or front and / or side areas of the motor vehicle. The controller controls the sensor or sensors and evaluates the obtained reflections of the emitted signal. [0003] Various methods are known from the prior art for functional testing of such distance measuring systems. DE 10 2005 009 702 A1 discloses a method in which the detection values ​​of a sensor are compared with the detection values ​​of a second distance-measuring system, which is based on a physically different syst...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/52G01S15/93
CPCG01S7/4004G01S7/52004G01S2007/52009G01S2007/52012G01S7/4039
Inventor R·施米德
Owner ROBERT BOSCH GMBH
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