本文提供一個低成本的的雙波長流體裝置量測葡萄糖濃度。雙波長流體裝置是使用兩個不同波長的發光二極體和兩個檢測的光電二極管，達到量測待測液體中對不同波長的吸收差異，藉此取代傳統光譜儀和分光光度計中昂貴的光纖光路設備和精密透鏡，達到減少成本和體積的目的。
雙波長流體裝置利用兩個特殊的量測波長，分別是近紅外光譜中的1450 奈米和1650 奈米的光源量測甲基丙烯酸甲酯流道中，光學路徑約2 毫米的待測液體。本文利用光脈衝的邊緣特性，在高頻率和低功率的光源下，量測光線通過葡萄糖溶液後，在上升邊緣響應，並計算不同波長對濃度造成的差異。此雙波長流體裝置為一個量測人體血液中含葡萄糖的濃度的傳感器，並具有成本效益，結構簡單和重複使用等優點。

A low-cost and compact complete glucose sensor dedicated for dual wavelength measurements under conditions of flow injection analysis has been developed. The dual optical wavelength fluidic device (DOWFD) is made of two emitter light emitting diodes (LEDs) and two detector photodiodes only, without any additional fibers and lenses. The DOWFD was fabricated similarly to the optical absorption scheme made from poly methyl meth acrylate (PMMA) micro-fluidic. Puled dual-wavelength LEDs source are the 1450 nm wavelength and the 1650 nm wavelength under near infrared (NIR) spectrum range. An absorbance path length of 2 mm enables glucose solution to be detected from 1% to 25% concentration. The thesis presents a pulse-edge method form measuring the rising-edge response of waveform under the light source of high frequency and low intensity. The DOWFD provides a cost-effective, simple structure that could be deployed in a range scenario for blood glucose detection.

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