Method for measuring distance between cars and telemeter

A measurement method and technology of a rangefinder, which are applied in the field of vehicle range finding, can solve the problems of inaccurate measurement by the rangefinder, difficult to capture boundaries, and no long-distance range measurement, and achieve accurate range measurement, simple structure and low cost. Effect

Inactive Publication Date: 2007-05-16
杨楠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, there are many types of vehicle models, and the width of the rear of the vehicle is not the same, and more and more vehicle rear ends are designed to be streamlined, and its boundary is difficult t

Method used

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  • Method for measuring distance between cars and telemeter
  • Method for measuring distance between cars and telemeter

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Embodiment Construction

[0018] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0019] According to the vehicle distance measurement method of the present invention, the width of the image formed on the windshield glass of the vehicle driven by the rear license plate of the vehicle at different distances ahead can be measured or calculated according to the structure of the vehicle being driven, and this width can be made into a scale and set at On the transparent marker 6, and paste on the front windshield 3. Or fix the transparent marker 6 such as a hard plastic frame on the instrument panel table top, and mark the size of the image of the license plate 5 on it as a scale, see Fig. 1 and Fig. 3 .

[0020] The rangefinder of the present invention is made of a transparent marker 6 with a scale 7, and the transparent marker 6 is arranged on the front windshield glass 3 of the automobile or the instrument panel table top...

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Abstract

This invention relates to one method and device to measure car distance, which is based on human visual principle image to collect different distance at different time point and uses standard object length of car to be tested at front wind block glass of car or transparent label on meter bench as standard ruler to judge distance between car and driving car; the meter ruler is to measure different car distance and the car to be tested at transparent label object length.

Description

Technical field: [0001] The invention relates to a vehicle distance measurement method and a distance finder based on the visual imaging principle, and relates to vehicle distance measurement. Background technique: [0002] Automobile is a very widely used means of transportation and transportation in modern society. With the popularization of highways and urban expressways, and the improvement of the original main transportation road conditions, the speed of vehicles is constantly increasing. Under such a background, maintaining a necessary safe distance for high-speed vehicles and maintaining a safe driving speed under a certain distance between vehicles is the key to ensuring safe and smooth roads and the safety of vehicles and passengers. In terms of distance measurement of driving vehicles, the technologies used in the previous distance measurement methods mainly include: infrared technology, ultrasonic technology, laser technology, radar technology, etc., all of which ...

Claims

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Application Information

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IPC IPC(8): G01C3/00B60R21/013
Inventor 杨楠
Owner 杨楠
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