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Design of the On-line Measuring Instrument for COD Based on the Ultraviolet Absorption Specturm

Author: WangLiHua
Tutor: SunRongXia
School: Hebei University
Course: Detection Technology and Automation
Keywords: COD test UV absorption spectra Support Vector Machine ADμC812 SCM
CLC: TN23
Type: Master's thesis
Year: 2008
Downloads: 12
Quote: 1
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Abstract


COD is a strong oxidant that can be water reducing substances consumed amount of oxidant . It is characterized by reducing substances in water composite indicator , usually as water main indicators of organic content testing . Currently , there are many COD detection method , UV absorbance detection method is COD detection technology trends. Describes the COD detection technology , UV absorption method COD detection principle and technical characteristics ; focuses on the support vector machine theory, support vector machine algorithm COD sensing applications advantages ; designed based on support vector machine theory UV absorption method COD detector implementation , completion of the system hardware and software design of the detector ; using instruments designed to measure the water sample tested , and based on the least square method COD detector data were compared . The results show that support vector machine algorithm based on structural risk minimization principle , thereby establishing the UV absorbance of water samples between the mathematical model and COD has better generalization ability and forecasting capabilities , superior to the traditional use of the least squares method, application of the algorithm to achieve the COD detector has better accuracy.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > UV technology and equipment
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