大範圍高精度的精巧型飛時式雷射測距儀

Abstract

本論文將對飛時式雷射測距技術操作和發展進行探討與研究。飛時式雷射測距的原理是運用脈衝式定電流源讓雷射產生穩定的脈衝訊號輸出，當雷射接收器接收到雷射訊號後，便立即計算出傳送端訊號與接收端訊號的時間差，最後經由微處理器將時間差轉換成量測距離輸出。在此論文中運用連續高速脈衝的技術發展出一套強大的雙模式雷射測距系統來達到在長短距離量測時有著相同的高解析度，同時也簡化整體測距電路的設計及降低電源功率的消耗，來讓雷射測距模組能夠輕易的在手持裝置上實現。

The thesis focuses on the operation and the development of the time of flight (TOF) laser rangefinder technology. The laser rangefinder technology is fulfilled by using a pulsed laser system as a light source to emit stable optical signals. When a receiver measured the reflected optical signals from a reflector, the time difference between the emitted and the reflected light can be instantaneously analyzed through an electronic microprocessor. The distance between the emitter and the reflector can be systematically calculated with the information of the measured time difference between the signals. In this work we employ the continuous high-speed pulsed technology to successfully develop a powerful dual-mode laser rangefinder system which maintains fairly precise measurement for different measured distances. Moreover, it can be expected that the simplicity of the circuit design and low power consumption could lead the system to be served as a portable device in the future.