研究目的
To demonstrate the potential of a-Si:H thin film PSD arrays for high-speed and high-resolution 3D object scanning using a sheet-of-light laser within a triangulation platform.
研究成果
The study demonstrates that a-Si:H 128 PSD sensor arrays can be used for high-speed and high-resolution 3D object scanning. The simulation highlights the technology's potential to compete with advanced CMOS sensor-based systems, with future improvements focusing on sensor material and system enhancements.
研究不足
The quality of the 3D object profile depends on the correct and accurate position response of each detector and the size of the PSD array. Potential improvements include using nanocrystalline silicon for better sensor response and enhancing the triangulation platform with better optics and anti-vibration measures.
1：Experimental Design and Method Selection:
A MATLAB/SIMULINK model was constructed to simulate the PSD array technology for 3D object scanning. The model allows parameter adjustments such as the number of PSD elements, direction of vision, and scanning angle.
2：Sample Selection and Data Sources:
The simulation uses a 'teapot.ply' file for 3D data, representing the object to be scanned.
3：List of Experimental Equipment and Materials:
The setup includes a 128 PSD array sensor, a sheet-of-light laser, and a triangulation platform.
4：Experimental Procedures and Operational Workflow:
The object is scanned by moving it under the laser sheet, with the reflection projected onto the PSD array. The system calculates the 3D coordinates of each scanned point.
5：Data Analysis Methods:
The simulation analyzes the 3D object profile quality based on the PSD array's position response and size.
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