本研究之目的為建立一套量化生理指標的非侵入式量測系統，本文主要探討量測人體各部位的振動頻率。 本實驗的架構及器材包含了投影機、攝影機、附有Matlab軟體之電腦，利用投影機在人體表面投射出指定寬度的Ronchi Ruling光柵，將人體的振動轉化為疊紋的亮暗變化，接著計算疊紋的灰階值變化並經由傅立葉轉換得到人體振動的頻譜圖。 本實驗目前主要對手指進行多點量測，會得到不同位置的振幅變化圖和頻譜圖。受試者在兩種不同的情境下接受一樣的測試，而能透過頻譜圖加以分辨。 ;The main purpose of this paper is to build a non-invasive optical measurement for quantizing the physiological index of human. This paper will be certain in tremor and vibration frequency of human hands. This system builds Moiré pattern by post-production, and calculate the frequencies on hands by Matlab. According to the value of Moiré pattern, we can transfer it to frequency domain so that we can quantize the tremor of hands. The study uses digital Moiré pattern to build a system for measuring tremor of hand. The system can digitize the tremor of hand and plot spectrogram by doing Fourier transform to grayscale of interested point. Doctors can judge efficacy of treatment by objective data and reduce misjudgments by patient oral discussion.
