應用於生物感測器之新型校正與補償技術電路

Novel Calibration and Compensation Technique of Circuit Design for Biosensor

廖漢洲(Han-Chou Liao)

指導教授 ： 熊慎幹

中原大學/工學院/電子工程研究所/碩士(2004年)

https://doi.org/10.6840/cycu200400442

摘要

本論文係分析鈉離子選擇電極於不同感測面積下之各種特性，如感測度、高濃度之飽和現象、電流-電壓特性曲線與雜訊，且分析生醫感測器之穩態時間，以判斷訊號擷取時間，並將電壓式感測器與電流式感測器建構於同一之量測電路系統，而電壓式感測器有偏移電壓問題之存在，係使用一偏移電壓消除電路將之消除校正，以提高量測之準確度。最後，考量感測元件之穩定度與可靠度，其中有時漂現象與遲滯效應，係使用一新型之遲滯校正方法與時漂校正電路，以提高感測元件之穩定度與可靠度。

關鍵字

偏移電壓 ； 遲滯 ； 鈉離子選擇電極 ； 穩態時間 ； 時漂

並列摘要

In this study, characteristics of the sodium ion selective electrode of different sensing areas based on the separative extended gate field effect transistor are analyzed, such as sensitivity, saturated performance in high concentration, current-voltage characteristics, and noise. Moreover, time of the signal obtained is determined by stable time of biosensor. Furthermore, the potentiometric sensor and amperometric sensor are based on the same measurement circuit system. However, the potentiometric sensor has the problem of the offset voltage, the offset cancellation circuit is used to cancel the offset voltage, and then accuracy can be increased. Eventually, the problems of stabilization and accuracy include the drift effect and hysteresis effect. The novel hysteresis calibration method and drift calibration circuit are used to calibrate these effects, and then stabilization and accuracy of sensor are increased.

並列關鍵字

offset voltage ； stable time ； hysteresis ； drift ； sodium ion selective electrode

參考文獻

[44]陳佳琪, "可拋棄式尿素感測器與前置放大器之研究", 中原大學電子工程研究所碩士論文, 2002.

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