- 學位論文
室內低色溫色溫計之應用與分析
Application and Analysis of Indoor Low cold Temperature meter
摘要
本論文係採用盛群微控制器HT66F50的8位元MCU並結合光學顏色感測器TSC3200，將光源或者待測物體其RGB三刺激值以不同頻率表示其訊號強弱，並輸入至MCU做計算或者顯示LCM上，本論文採取簡易式移動平均法將所輸入之資料做平均，以達到處理速度上的優勢，並可依照CIE RGB空間到XYZ空間標準轉換公式和相關色溫公式，進而得到所需之色溫。 每一種場合之中，皆有不同色溫之光源，色溫過高可能使人急躁、不安焦慮，適當的光源色溫可以讓人心情愉悅，在攝影照像方面，不同色溫光源所顯示出來的結果也大不相同，由於市面上販售之色溫計量測範圍較廣，且售價金額過高，因此本研究將設計以低成本、方便攜帶、高便利之小型色溫計為目的，並可隨時放在光源之下即時量測，其預估成本約新台幣5000元內。
並列摘要
This study combines the 8-bit MCU in Holtek microcontroller HT66F50 with the optical color sensor TSC3200 to indicate the signal strength of light sources or objects to be measured by representing their RGB tristimulus values in different frequencies and enter the data into the MCU for the calculation or display of LCM. The mean values of the entered data are computed using a simple moving average method to achieve the advantage in processing speed. Desired color temperatures are obtained using the standard conversion formula for turning CIE RGB space into XYZ space. Individual occasions require light sources with different color temperatures. Excessively high temperatures can make one irritable, restless and anxious while adequate temperatures make one feel good. In photography, light sources with different color temperatures also produce greatly varying results. Given that commercially available color temperature meters have a wider range of measurement and excessively high prices, this study aims to design a small color temperature meter that is low-cost, portable and highly convenient and can be placed under light sources for immediate measurement at anytime with an estimated cost of less than NT$5,000.