Road surface situation automatic acquisition equipment and acquisition method thereof

Abstract

The invention provides an automatic acquisition device for highway pavement conditions and an acquisition method thereof. The acquisition device comprises a CCD camera, an image acquisition card, a computer, an acquisition matching control circuit, a vehicle speed detection circuit and a mileage pile number; and the device is arranged on a vehicle. The vehicle speed detection circuit detects running speed of the vehicle. According to vehicle speed information supplied by the vehicle speed detection circuit, the acquisition matching control circuit dynamically adjusts trigger pulse to control operation of the CCD camera to achieve acquisition of pavement condition information with a certain proportion. Pavement images acquired by the CCD camera are received by the image acquisition card which converts the images into storage formats of digital images. The mileage pile number transmits the running mileage pile number information of the vehicle to the computer. The method can overcome the defect of the prior manual investigation, has the advantages of quick use, reliability and low equipment cost, adopts the acquisition matching control circuit to dynamically adjust shooting frequency of the CCD camera 1 according to different vehicle speeds, and can realize the acquisition of pavement without repetition or missing.

Description

(1) Technical field [0001] The invention relates to a road surface monitoring technology, in particular to a device for automatically collecting road surface conditions. (2) Background technology [0002] With the rapid development of my country's transportation, accurate and timely detection of road damage has become an increasingly prominent problem. As one of the main disease forms of asphalt pavement on expressways in my country, cracks seriously affect the service life of the pavement and the economics of pavement maintenance decisions. content. The current pavement condition survey in my country still adopts manual methods. Under the condition of high-speed traffic, it takes a long time, is expensive, and is dangerous. It cannot provide timely and accurate data for pavement maintenance decision-making, which makes my country implement the pavement maintenance management system for more than 10 years. has been idle. [0003] In the invention patent application "Automat...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing manual survey, to provide a fast, low equipment cost, reliable use, using acquisition matching control circuit, according to the different vehicle speeds, can dynamically adjust the shooting frequency of the CCD camera 1, to realize the detection of the road surface Equipment for automatic collection of road surface conditions without overlapping and without omission

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