Field calibration device of high-temperature forging structure light photography measurement system
A photogrammetry and on-site calibration technology, applied in measurement devices, optical devices, instruments, etc., can solve the problems of inability to meet actual measurement needs, poor applicability, and low measurement accuracy, and achieve fast measurement speed, convenient operation, and accuracy. high effect
Inactive Publication Date: 2012-07-18
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an on-site calibration device for the structured light photogrammetry system of high-temperature forgings, which can realize on-site measurement, dynamic measurement and various Cross-section measurement, effectively solving the problems of poor applicability of existing technologies, low measurement accuracy, and failure to meet actual measurement needs
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[0009] The technical solution of the invention will be further described in detail below in conjunction with the accompanying drawings.
[0010] Depend on Figure 1-3 As shown, the present invention includes a plane calibration board and a photographic light source device. The plane calibration board includes a board body. There is a calibration board handle 4 in the middle of the upper part of the board body 1. On the calibration board body 1, coded mark points 3 and reflective marks are alternately distributed. Point 2; the photographic light source device includes a light source base 5, a light source 12 and a light source controller 7, and there are 3 light source bases, each light source base center is equipped with a camera 6, and the periphery of the camera is evenly distributed on the light source base 5 with cameras The connected light source system 12, the light source controller 7 is respectively connected to the cameras 6a, 6b, 6c on the three light source bases vi...
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The invention relates to a field calibration device of a high-temperature forging structure light photography measurement system. The field calibration device can realize measurement on the field, the trend and each section of a high-temperature forging cast in a workshop, solves the problems in the prior art that the applicability is poor and the measurement precision is low. The field calibration device is characterized in that a calibration plate handle is arranged at the middle part of the upper part of a plane calibration plate, coding mark points and light-reflecting mark points are alternately distributed on the calibration plate body; three light source bases are arranged for a photographic light source device, a camera is arranged in the center of each light source base, a light source system connected with the camera is arranged at the periphery of the camera on each light source base, a light source controller is connected with the cameras on the three light source bases respectively by signal wires and is also connected with the light source system, and a power line and a switch are arranged on the light source controller. The field calibration device is simple in structure, convenient to operate, high in measurement speed, and high in precision, can realize non-contact long-distance / short-distance measurement, and simultaneously can obtain an in-place high-temperature forging three-dimensional model in real time to meet the requirement of thermal-state in-place measurement of the high-temperature forging.
Description
technical field [0001] The invention relates to an on-site calibration device for a high-temperature forging structured light photogrammetry system. Background technique [0002] At present, the in-situ detection technology for hot state of high-temperature forgings is a difficult point. To solve this problem, workers have developed a variety of detection systems, but they cannot meet the actual needs. For example, the patent publication number of the dual-camera calibration method in the 3D reconstruction system is (CN1851752A), and the proposed dual-camera calibration device calibrates the internal and external orientation elements of the two cameras relatively completely. However, this calibration device depends on the intensity of the surrounding environment when using the calibration plate for calibration, and does not consider the calibration light source. It is not suitable for the actual application of factories with complex environmental intensity in the workshop, a...
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IPC IPC(8): G01B11/00G01B11/24
Inventor 黄桂平范亚兵陈铮马开锋胡青峰孟俊贞
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER