The invention discloses a method for detecting the concave-convex amount of an aircraft
assembly fastener, and relates to the technical field of aeronautical manufacturing surface quality detection, and the method comprises the following steps: S1, a detection device is built; s2, synchronous
square wave signals are outputted to a line
laser and a one-dimensional
galvanometer to change the rotating angle of the one-dimensional
galvanometer, wherein the one-dimensional
galvanometer rotates in a stepping mode, and the line
laser is lightened once every time the one-dimensional galvanometer rotates by one angle; s3, every time the line
laser is turned on, the first camera and the second camera store images in a local
exposure mode, and the sequence of local
exposure is recorded; s4, after one-time scanning is completed, the first camera and the second camera transmit images, the images of the first camera and the second camera are matched according to the
exposure time sequence, then three-dimensional calculation is conducted, and
point cloud data of the
fastener area are obtained; and S5, the
point cloud data is analyzed, a high point and a low point in the
point cloud data are extracted, and the concave-convex quantity is calculated. The method has the advantages of large data coverage area and accurate extraction of the high point and the low point during detection.