Vehicle outline and wheel base automatic measuring system and measuring algorithm

Abstract

The invention discloses a vehicle outline and wheel base automatic measuring system and a measuring algorithm. The vehicle outline and wheel base automatic measuring system comprises three distance measuring units, an outline measurement control unit, a wheel base measurement control unit, an evidence collection unit, a comprehensive data processing unit and a measurement channel. The distance measuring units, the outline measurement control unit, the wheel base measurement control unit and the evidence collection unit are arranged on the measurement channel. The three distance measuring units are the first distance measuring unit B1, the second distance measuring unit B2 and the third distance measuring unit B3 respectively. The outline measurement control unit is connected with the three distance measuring units respectively. The wheel base measurement control unit is connected with the first distance measuring unit B1. The distance measuring units are connected with the comprehensive data processing unit. The evidence collection unit is used for monitoring and recording the real-time condition of running of a detected vehicle. The vehicle outline and wheel base automatic measuring system can automatically measure vehicle outline data including the length, width and height of the vehicle and wheel base data of the vehicle, ensure the measuring accuracy and improve the measuring efficiency.

Description

technical field [0001] The invention relates to the field of measurement, in particular to an automatic measurement algorithm and device for vehicle profile and wheelbase. Background technique [0002] With the rapid development of the economy, the number of new motor vehicles in our country is astonishing every year. In order to prevent some passenger and trucks from modifying the vehicle size without permission, the Vehicle Management Office of the Traffic Management Bureau of the Ministry of Public Security must inspect the outer contour size of the vehicles every year. The traditional manual measurement method currently used has low efficiency and high labor cost, and is affected by the complex structure of the vehicle under test and restricted by the measurement tools, so the measurement accuracy has a large error. This urgently requires the use of automatic methods and automatic devices to detect the outer contour of the vehicle, which not only ensures the measurement ...

AI Technical Summary

Problems solved by technology

The Chinese patent with the application number 201210119598.7 discloses a light curtain-based automatic vehicle size measurement system and its measurement method. The system requires multiple light curtain sensor arrays, which has a complex structure and high power consumption. Damage, not easy to detect and repair later

The Chinese patent application number 201020645084.1 discloses a vehicle size automatic inspection and measurement device using a laser scanner and an imaging device. The device is mainly based on an imaging device and supplemented by a laser scanner. Affected by complex backgrounds, light and shadows, work unstable

The Chinese patent with application number 201210175516.0 discloses a method and device for measuring vehicle size by laser radar scanning, which has the following disadvantages: (1) the wheelbase of the vehicle cannot be detected; (2) the pair of vehicle rearview mirrors cannot be removed The influence of the width; (3) Due to the limitation of the radar installation position, there is a dead angle in the scanning of the vehicle width, and the measured vehicle width is only the width of the upper surface of the vehicle, not necessarily the maximum width of the vehicle

(4) This method cannot meet the accuracy requirements of the novelty checking project of this application

In short, the existing automatic vehicle size measurement methods and devices have high cost, incomplete performance, and low usability

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