臺灣博碩士論文加值系統

本研究將發展一個能長期、簡易、快速測量物體位移的方法，我們利用雷射掃描系統掃描一區域，並比較先前、先後的數據，判斷物體否有位移。
市面上的雷射掃描系統，其測量方法較少出現在相關文獻中，大多數系統應用為測量系統與物體的距離，而非測量物體與物體之間的距離，故本研究發展一個適用於微機電掃描振鏡的測量方法，此方法搭配飛行時間法與三角測量法，可快速計算出兩個物體間距離的三維分量。
目前我們的雷射掃描系統最高掃描速度可達1 kHz、約20度的掃描角度、最大偵測距離超過60公尺，且系統可利用LabVIEW進行自動化量測，期望未來能逐步完善程式，應用在災害防治。

This study is expected to develop a fast and easy method for measuring the displacement of objects in the long term. We use a laser scanning system to scan an area and compare previous and later data to determine whether the objects have displaced or not.
The relevant literatures did not have detail appearance on the measuring method of commercial laser scanning system. Most of the system applications measure the distance between the system and the objects, instead of measuring the distance between the objects. Therefore, this study develops a measurement system based on MEMS mirror. This method can calculate the 3-D displacement between two objects by using time of flight and method of triangulation.
At present our laser scanning system has a maximum scanning speed of 1 kHz, 20 degrees field of view, and a maximum detectable distance above 60 meters. This system can automatically measure with LabVIEW. It is expected that this LabVIEW program can be improved and applied to disaster prevention in the future.

第一章 序論 1
1-1 前言 1
1-2 研究動機與目的 3
1-3 雷射掃描器簡介 4
1-3-1 發射器 4
1-3-2 接收器 5
1-3-3 雷射掃描裝置 5
1-4 雷射測距技術簡介 11
1-4-1 三角測量法 12
1-4-2 相位式、脈衝式飛行時間測距法 12
1-4-3 調頻連續波測距法 13
1-5 他人及本實驗室先前實驗成果回顧 14
1-6 論文章節簡介 16
第二章 雷射掃描系統 17
2-1 實驗架構簡介 17
2-2 光束準直實驗架構 22
2-3 光束準直性與訊號強度 26
2-3-1 一次準直 26
2-3-2 二次準直 27
2-3-3 結論 30
2-4 掃描振鏡之驅動波形設計 31
2-4-1 三角波與階梯波 31
2-4-2 脈衝雷射對波形的影響 33
2-5 系統最大偵測距離與準確度 34
第三章 物體三維位移的量測 39
3-1 實驗架構 39
3-2 測量方法 40
3-3 函數訊號電壓與振鏡偏轉角度 43
3-4 實驗結果 45
3-5 LabVIEW自動化量測程式 46
第四章 結論與未來展望 50
參考文獻 53

[1] 江怡萱。「雷射掃描技術於隧道內空變位監測之應用」。碩士論文，國立臺灣大學土木工程學研究所，2014。
[2] 自強工程顧問有限公司 [Online]. Available: http://www.strongco.url.tw/insideD_Lidar.html
[3] Y. Luo, Y. He, M. Gao, C Zhou, H. Zang, L. Lei, K. Xie, Y. Yang, W. Shi, X. Hou, and W. CHen “Fiber laser-based scanning lidar for space rendezvous and docking,” Applied Optics, vol. 54, no. 9, pp. 2470–2476, Mar. 2015.
[4] 董弘偉。「適用於惡劣環境雷射掃描系統之研發」。碩士論文，國立中山大學海下科技暨應用海洋物理研究所，2012。
[5] J. Hecht, “Lidar for Self-Driving Cars,” Optics and Photonics News, vol. 29, no. 1, pp. 26–33, Jan. 2018.
[6] M. Nilsson, “Estimation of tree heights and stand volume using an airborne lidar system,” Remote Sensing of Environment, vol. 56, no. 1, pp. 1–7, Apr. 1996.
[7] Yole Développement. (2017). Application, market & technology status of the automotive LIDAR [Online]. Available: http://image-sensors-world.blogspot.com/2017/10/yole-on-automotive-lidar-market.html
[8] A. Wehr and U. Lohr, “Airborne laser scanning—an introduction and overview,” ISPRS Journal of photogrammetry and remote sensing, vol. 54, no. 2–3, pp. 68–82, Jun. 1999.
[9] S. Olyaee, S. M. Nejad, S. Mohammad, and N. Et Al, “Comparison of TOF, FMCW and Phase-Shift laser range-finding methods by simulation and measurement,” Quartarly Journal of Technology & Education, vol. 1, no. 1, pp. 11–18, Jan. 2006.
[10] K. Naganuma, J. Miyazu, and S. Yagi, “High-resolution KTN optical beam scanner,” NTT Technical Review, vol. 7, no. 12, pp. 1–6, Dec. 2009.
[11] W. Jiyang, G. Yongjie, L. Jing, and Z. Huaijin, “Progress in Electro-Optic Crystal Research,” MATERIALS CHINA, vol. 29, no. 10, pp. 49–57, Oct. 2010.
[12] B. E. Saleh and M. C. Teich, Fundamentals of photonics. John Wiley & Sons, 2019.
[13] georgehelser. (2016, March 21). Galvanometer scanners not fast enough for your new laser or application? [Online]. Available: https://precisionlaserscanning.com/2016/03/galvanometer-scanners-not-fast-enough-for-your-new-laser-or-application/
[14] Renishaw. Optical encoders and LiDAR scanning [Online]. Available: www.renishaw.com
[15] J. Zhang, S. Singh, “LOAM: Lidar odometry and mapping in real-time,” in Robotics: Science and Systems Conference, Berkeley, 2014.
[16] Mirrocle Technologies Inc. [Online]. Available: www.mirrorcletech.com
[17] J. K. Doylend, M. J. R. Heck, J. T. Bovington, J. D. Peters, L. A. Coldren, and J. E. Bowers, “Two-dimensional free-space beam steering with an optical phased array on silicon-on-insulator,” Opt. Express, vol. 19, no. 22, pp. 21595–21604, Oct. 2011.
[18] D. Zhuang, X. Han, Y. Li, and J. Song, “Silicon-Based Optoelectronic Integrated Optical Phased Array,” Laser and Optoelectronics Progress, vol. 55, no. 5, pp. 1–11, May. 2018.
[19] G. Berkovic and E. Shafir, “Optical methods for distance and displacement measurements,” Advances in Optics and Photonics, vol. 4, no. 4, pp. 441–471, Dec. 2012.
[20] 陳孝宇。「雷射掃描系統開發與土石位移監測之可行性研究」。碩士論文，國立臺北科技大學環境規劃與管理研究所，2004。
[21] M. -C. Amann, T. M. Bosch, M. Lescure, R. A. Myllyla, and M. Rioux, ”Laser ranging: a critical review of usual techniques for distance measurement,” Optical Engineering, vol. 40, no. 1, pp. 10–19, Jan. 2001.
[22] M. Jaboyedoff, T. Oppikofer, A. Ableeán, M. -H. Derron, A. Loye, R. Metzger, and A. Pedrazzini, ” Use of LIDAR in landslide investigations: a review,” Springer Netherlands., vol.61, no. 1, pp. 5–28, Mar. 2012.
[23] 廖家緯。「雷射掃描收發模組之光學系統研究」。碩士論文，逢甲大學光電研究所，2017。
[24] A. Kausas and T. Taira, “Timing jitter control by scanning coupled cavity in passively Q-switched Nd:YVO4/Cr:YAG laser,” in Advanced Solid State Lasers, OSA Technical Digest, 2014, paper ATh2A.40.