以光折射率識別糖水之甜度

Identifying the Sweetness of Syrup with Light Refractive Index

羅鴻生(Hon-Seng Lo) ； Eva Natalia Chiristina ； 洪上禾(Shang-He Hong) ； 林湘霖(Siang-Lin Lin)

《物理教育學刊》 23卷1期 (2022/07) Pp. 37-48

https://doi.org/10.6212/CPE.202207_23(1).0004

摘要

基於劍橋IGCSE的物理與數學，應用工程設計、系統模擬、信息測試至影像分析，探索以光學折射方法識別糖水之甜度。雖然數位影像處理的數學超乎高中程度，所幸Python程式語言方便理解與應用，且實驗與模擬結果差異在6%及以下。

關鍵字

折射率 ； 系統模擬 ； 數位影像處理

並列摘要

Based on the Cambridge IGCSE physics and mathematics, the method of optical refraction is explored to identify the sweetness of sugar water. Which include application of engineering design, system simulation, data acquisition and image processing. Although the background mathematics of digital image processing may beyond the high school level, fortunately, the Python narrative programming language is easy to understand and apply, and the maximum difference between the experimental and simulation results is 6% or less. The circular mask used for the first time needs further research.

並列關鍵字

Refractive Index ； System Simulation ； Digital Image Processing ； Circular Mask

參考文獻

Magwaza, L. S., & Opara, U. L. (2015) Analytical methods for determination of sugars and sweetness of horticultural products - A review. Scientia Horticulturae, 184, 179-192.

METTLER TOLEDO (2014) BRIX-Sugar Determination by Density and Refractometry. Technical Bulletin.

EXPERIMENT ON REFRACTIVE INDEX OF LIQUID USING TOTAL INTERNAL REFLECTION - YouTube. https://www.youtube.com/watch?v=MIgq4g6Bxes.

Nightingale, G. (2017) Cambridge IGCSE Physics Practical Work book. Cambridge University Press.

Sang, D. (2014) Cambridge IGCSE Physics Course book. Cambridge University Press.