An elevator equipment company in Shanghai commissioned Hualang to measure the length of this elevator up to 18 meters, which is huge in size. According to the actual situation of the company, Hualang engineers used the three-dimensional photogrammetric system HL-3DP, which took only one hour to obtain the three-dimensional data of the elevator with an accuracy of 0.25mm.
Practical problem
1. The length of the elevator is 18 meters, the body is huge, and the elevator has many curved surfaces, the structure is complicated, and the measurement is difficult.
2. The traditional measurement method of this elevator company is manual measurement, which is too high in time cost and labor cost, and the accuracy error is extremely large.
According to the actual situation of the company, Hualang 3D engineers decided to use the 3D photogrammetric system HL-3DP to obtain the 3D data of the elevator. The three-dimensional photogrammetry system HL-3DP is a handheld high-resolution (4288×2848) digital camera that takes digital photos of the measured object. The 3D coordinates of the measured object are obtained by the superposition of 2D digital photo images. , And this mobile technology can effectively save measurement time for capturing 3D coordinates of the measured object, quality control (Inspection) and deformation analysis (Deformation).
1. Preliminary preparations
Paste code points: enable the 3D photogrammetry system to obtain 3D coordinate values on the surface of the object.
Paste code points
2. Three-dimensional photogrammetry
The length of the elevator photographed is 18 meters, the body is huge, and the elevator has many curved surfaces, complicated structure, and difficult to measure. Hualang engineers use the three-dimensional photogrammetry system (HL-3DP) to take multiple images of the elevator. Through the three-dimensional distance measurement method, the HOLON3DP software automatically combines these images. After calculation, the 3D coordinates of the center of each code point can be obtained. , Calculate the 3D coordinate values of key information points on the surface of the object. Use the acquired three-dimensional data to quickly detect the difference between the elevator (CAD) model and the product, and clearly understand the quality of the elevator, so that the company can improve the product in time.
3D photogrammetry site
3D photogrammetry site
3D photogrammetric data