Tunnel detection device, detection system and tunnel defect information extraction method
A detection device and detection system technology, applied in measurement devices, radio wave measurement systems, control/adjustment systems, etc., can solve the problems of small area and difficulty in synthesizing complete images of contiguous pieces.
Active Publication Date: 2018-11-13
CHENGDU ZHONGXIN HUARUI TECH CO LTD
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However, due to the small area covered by each image of the high-resolution image, and most of the disease information cannot be fully represented on one image, the tunnel lining disease needs to be mosaiced by multiple images
The actual operation process is to continuously move the tripod (moving camera) to obtain multiple images. The outer orientation elements of the camera in each imaging, each tunnel image has different optical imaging centers, azimuth angles, and elevation angles, and has different scales. It is difficult to synthesize a continuous complete image
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0027] It should be noted that like numerals and let...
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The invention provides a tunnel detection device, a detection system and a tunnel defect information extraction method, and relates to the field of tunnel detection. The tunnel detection device comprises a vehicle body, a light source system and a plurality of detection units, each detection unit comprises imaging equipment and distance measuring equipment. When the distance measuring equipment measures distance, a tunnel image with characteristic points or characteristic patterns is shot, the distance between the preset imaging equipment and the distance measuring equipment is measured, and position parameters of the imaging equipment are calculated, and finally, a surface image of the tunnel wall and an internal three-dimensional image of a tunnel are measured. Accordingly, defect information in the tunnel can be obtained according to the surface image and the internal three-dimensional image of the tunnel, the detection system is arranged on the vehicle body, the vehicle body stopsand is static after traveling for a predetermined distance, an imaging system captures images of the tunnel, and the captured images are spliced and processed finally, and a complete tunnel surface image and a tunnel image with three-dimensional spatial coordinates can be generated.
Description
technical field [0001] The invention relates to the field of tunnel detection, in particular to a tunnel detection device, a detection system and a method for extracting tunnel disease information. Background technique [0002] At present, the methods used in the quality inspection of tunnel linings in railway operation are mainly human eye observation, manual measurement and drawing methods and photographic methods. Among them, the auxiliary equipment used for close-range observation and measurement by human eyes mainly includes trolleys and overheads, etc., which are used to solve the problem that the ground observation distance is too far to allow close-range observation and measurement. However, the human eye observation method is limited by the observer's vision and physical strength, so it is easy to cause omissions and inaccurate descriptions. At the same time, the human eye detection time and image forming cycle are long, and the work efficiency is very low. [0003...
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IPC IPC(8): G01N21/88
CPCG01N21/01G01N21/8806G01N21/8851G01N2021/0112G01N2021/8883G01N2021/8887G01N2201/0216G01S17/48G01S17/89G05D1/0094G05D1/0272
Inventor 秦军
Owner CHENGDU ZHONGXIN HUARUI TECH CO LTD