讀出電路設計與FPGA平臺實現之葡萄糖/膽固醇/化學需氧量感測應用

Readout Circuit Design and FPGA Based System Implementation for Glucose/Cholesterol/COD Sensing Application

李永晠(Teddy Lesmana)

指導教授 ： 鍾文耀

中原大學/工學院/電子工程研究所/碩士(2013年)

https://doi.org/10.6840/CYCU.2013.00004

摘要

在這篇論文中，討論了基於FPGA的雙血糖/膽固醇計和基於微控制器單元（MCU）平台的化學需氧量（COD）傳感系統的設計。COD的感測系統包括：一個讀出電路，和一個模擬 - 數字轉換器（ADC），和AT89S51微控制器單元（MCU），和用於表示相應的讀出值的液晶顯示器（LCD）。此外，一個雙葡萄糖/膽固醇計由一個雙葡萄糖/膽固醇的讀出電路，一個ADC，數字控制器，串行電可擦除可編程只讀存儲器（EEPROM），和一台液晶顯示器構成。讀出電路可按比例傳輸由葡萄糖/膽固醇/ COD傳感器檢測出的電流信號。它的製造工藝為0.35 µm TSMC CMOS，面積為0.086 mm2，功率消耗為409.29μW。數字控制器以現場可編程門陣列（FPGA）為平台進行仿真，在該平台中測量結果由LCD顯示，數據存入串行EEPROM。這項研究的線性度為0.9850：葡萄糖濃度的範圍為50〜400 mg / dL狀態下電流檢測範圍為5.01〜22.3μA，其系統功率消耗是46.893 mW；膽固醇濃度是範圍為50〜385毫克/分升狀態下電流檢測範圍為500〜600μA。此外，本系統可在11秒內提供葡萄糖檢測（mg/dL）的查詢結果，20秒內提供膽固醇的檢測（mg/dL）的結果，該速度與以往的成果相比有大幅提升。實驗結果表明，與以前的系統相比，這項工作的線性度，精度和功耗方面均具有更好的性能。

關鍵字

葡萄糖 ； 膽固醇 ； 化學需氧 ； FPGA ； 電路設計

並列摘要

The work accomplished in this thesis discusses the design of a dual glucose/cholesterol meter based on FPGA and chemical oxygen demand (COD) sensing system based on microcontroller unit (MCU) platforms. A COD sensing system includes a readout circuit, and an analog to digital converter (ADC), and AT89S51 microcontroller unit (MCU), and a liquid crystal display (LCD) for showing the corresponding readout value. Moreover, a dual glucose/cholesterol meter consists of a dual glucose/cholesterol readout circuit, an ADC, a digital controller, a serial electrically erasable programmable read-only memory (EEPROM), and a LCD. The readout circuit is used to proportionally transfer the current signal detected by a glucose/cholesterol/COD sensor. It was fabricated by a 0.35 µm TSMC CMOS process with an area of 0.086 mm2 and 409.29 µW power consumption. The digital controller was emulated by using a field programmable gate array (FPGA) as a platform, which displays the measured result on LCD and stores the data into the serial EEPROM. The linearity of this work is 0.9850 for the current sensing range of 5.01~22.3 μA within glucose concentration range of 50~400 mg/dL with the power consumption of this system is 46.893 mW and current sensing range of 500~600 μA within cholesterol concentration range of 50~385 mg/dL. In addition, this system can produce the glucose detection (mg/dL) results within 11 seconds as well as the cholesterol detection (mg/dL) results within 20 seconds, which are faster than the previous works. Comparing to the previous systems, the experiment results show that this work has a better performance in terms of linearity, accuracy and power consumption.

並列關鍵字

Readout Circuit Design ； FPGA ； System Implementation ； Glucose ； Cholesterol ； COD Sensing ； Application

參考文獻

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