低成本雷射軌跡量測系統

在工程應用上，一物體在空間中的座標資訊是非常重要的。自雷射追蹤儀產品問世後，解決了工業上許多繁雜的問題，雖然雷射追蹤儀是很方便的產品但相對的價格昂貴。本論文旨在開發一低成本雷射軌跡量測系統，主要包含了物體追蹤與座標量測兩子系統，其中將位移感測器與雷射二極體搭配運動控制軸卡與伺服馬達完成追蹤子系統；量測子系統則以雷射測距儀作為主體並搭配自行撰寫的程式運算當前座標值並記錄。實驗先以小型銑床進行初步驗證，之後使用CNC驗證此系統。實驗過程中將機構改善與量測誤差問題逐一改善，最終完成整套系統，量測結果與CNC移動路徑大致相符，此後便可將本系統應用在平面軌跡量測上。此系統不但將各組件模組化，不僅搬遷容易且只要按照組裝流程即可架設量測檯，可根據使用者的量測精度與預算等需求選擇量測距離的方式。

關鍵字

雷射；位移感測器；雷射測距儀；雷射量測；追蹤

並列摘要

The information of the object’s coordinate is important in industrial applications. In general, laser trackers are used to solve industrial problem such as large part inspection, building information modeling and reverse engineering, etc. Laser trackers are convenience products but they are too expensive. In the thesis, a laser tracking measurement system had been built. It includes object tracking and coordinates measurement two sub-systems. The system can be applied measuring a moving path of object in a plane. The tracking sub-system was built by PSD (position sensing detector, PSD), laser diode module, motion control card and servo motor. PSD is placed on the object which will be measured. If the object moved, the laser beam will track the center of PSD by servo motor rotation. The coordinate of the object was calculated by laser distance meter measuring value and servo motor rotating angle in the measurement sub-system. In the thesis, two functions of the system were validated on a small milling machine and a CNC machine. The system is modularization so that it can be quickly assemble and relocate to other place. Users can choose different distance measurement methods, it depends on type of measurement and cost, even if high precision and accuracy, laser interferometer might be a choice.

並列關鍵字

Laser ； PSD ； Laser distance meter ； Measurement ； Tracking

參考文獻

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低成本雷射軌跡量測系統

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