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Portable Multi-RGB Color Sensor Measurement Device for LED Ceiling Light

使用於LED平板燈相關色溫量測的多個RGB彩色感測器量測裝置

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摘要


本研究係在建置一使用於LED平板燈的精巧型多個RGB色彩量測裝置。本系統主要以微處理機控制器為運算核心,把RGB彩色感測器所擷取之訊號,利用類比/數位轉換器(ADC)轉換成數位訊號傳送至微控制器。然後再透過RS-232傳輸介面連接至個人電腦,達到即時監控之功能,並藉由操作簡易之人機介面,使量測更加方便。色溫是光源的一項重要參數,它的值可由色座標CIE(x, y)間接計算而得。本系統開發完成之後使用於LED平板燈色溫的量測。經實驗測試結果,LED平板燈與量到距離30 cm,LED燈泡發射角0°處,色溫量測精度在±5%以內。本系統優點為操作簡單、價格便宜、精度高及可以做為生產線即時檢測之用。

並列摘要


This paper studies the design of a portable multi-RGB color sensor measurement device which measures the chromaticity coordinates and color temperature of LED ceiling light using the RGB color sensor and correlated color temperature measurement program. The color matching function enables the compensation of measurement values to match a desired standard by correcting analog output of RGB color sensor. While the distance of 30 cm between the LED ceiling light and RGB color sensor, and at the beam angle 0° of LED ceiling light, the accuracy of color temperature measurement is better than ±5%. The advantages of this system are real time, compactness, low cost and multi-RGB sensor.

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