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    • 2. 发明专利
    • Method for remotely measuring crack
    • 远程测量裂纹的方法
    • JP2014098683A
    • 2014-05-29
    • JP2013049815
    • 2013-03-13
    • National Applied Research Laboratories財團法人國家實驗研究院National Applied Research Laboratories
    • CHANG WEN-YILIN FRANCOLEE LUNG-CHENGHSIAO HUNG-TACHEN SHOU-ISUNG YU-CHILIAO TAI-SHANCHEN CHIH-YEN
    • G01C15/00G01C11/04
    • G01B11/02
    • PROBLEM TO BE SOLVED: To provide a method for remotely measuring a crack.SOLUTION: In a method and device for remotely measuring a crack, multiple laser spots having a known shape are projected beside a crack on a remote wall, and geometric calculation is used to obtain relative coordinates and actual distances between the respective laser spots on the wall, and the actual distances are taken as reference lengths of the crack. Then, images of the crack and the laser spots are simultaneously captured in a remote position by a camera, and an image recognition technique is used to calculate a crack-relevant parameter in the captured images by calculation. A user can acquire the crack parameter without needing to completely come close to the location of the crack for measuring at a short distance or to place a reference object in the vicinity of the crack, so that safety and convenience are provided.
    • 要解决的问题:提供一种用于远程测量裂纹的方法。解决方案:在用于远程测量裂纹的方法和装置中,具有已知形状的多个激光斑点被投影在远程壁上的裂纹旁边,并且使用几何计算 以获得壁上各个激光点之间的相对坐标和实际距离,并将实际距离作为裂纹的参考长度。 然后,通过照相机同时在遥控位置捕获裂纹和激光斑点的图像,并且使用图像识别技术通过计算来计算捕获图像中的裂纹相关参数。 用户可以获取裂纹参数,而不需要完全靠近裂缝的位置,或者将参考对象放置在裂缝附近,从而提供安全性和便利性。