公开(公告)号：US08908195B2

公开(公告)日：2014-12-09

申请号：US13799095

申请日：2013-03-13

Applicant: National Applied Research Laboratories

Inventor： Wen-Yi Chang ,  Franco Lin ,  Lung-Cheng Lee ,  Hung-Ta Hsiao ,  Shou-I Chen ,  Yu-Chi Sung ,  Tai-Shan Liao ,  Chih-Yen Chen

IPC: G01B11/06 ,  G01B11/02

CPC classification number: G01B11/02

Abstract: The present invention relates to a method for measuring cracks remotely and the device thereof. First, multiple laser spots with known a shape are projected onto a remote wall and beside a crack. Then, by using geometric calculations, the relative coordinates of the laser spots on the wall and the real distance can be given and used as the reference length of the crack. Next, a camera is used for taking a picture of the remote crack along with the laser spots; the image identification technology is used for calculating the relevant parameters of the crack. Thereby, to acquire the parameters of the crack, a user needs not to be present at the site for measuring at a short distance or placing a reference object, and thus providing safety and convenience.

Abstract translation: 本发明涉及一种远程测量裂缝的方法及其装置。 首先，将具有已知形状的多个激光点投影到远程壁上并在裂纹旁边。 然后，通过使用几何计算，可以给出壁上激光点的相对坐标和实际距离，并将其用作裂纹的参考长度。 接下来，使用相机与激光点一起拍摄远程裂纹的图片; 图像识别技术用于计算裂纹的相关参数。 因此，为了获取裂纹的参数，用户不需要在现场进行短距离测量或放置参考对象，从而提供安全和方便。