Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen
碩士 === 國立臺灣大學 === 生物環境系統工程學研究所 === 94 === The process of aquaculture is frequently affected by many factors, that cause oxygen deficit phenomena in the water and lead to death of fish . Since the dissolved oxygen sensor remain high in price, it would cost substantial expenditure to establish a monit...
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ndltd-TW-094NTU054040042015-12-16T04:32:15Z http://ndltd.ncl.edu.tw/handle/19297321546336235569 Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen 低造價溶氧感測器之設計與研發 Ya-Yuan Cheng 鄭雅元 碩士 國立臺灣大學 生物環境系統工程學研究所 94 The process of aquaculture is frequently affected by many factors, that cause oxygen deficit phenomena in the water and lead to death of fish . Since the dissolved oxygen sensor remain high in price, it would cost substantial expenditure to establish a monitoring system for cultivation .Therefore, this research utilizes low cost sensor design and assembly to develop simple and self-operated oxygen dissolving detecting system. The foundation of developing the economical sensor is adoping Galvanic cell. The voltage magnitude and the dissolved oxygen is correlated according to oxidation-reduction reaction. The dissolved oxygen sensor is composed of Ag + Zn electrode, P.E. membrane, KCl solution, plastic shell, and wires. The sensitivity and aging speed of the detecting device may be influenced by several factors, including wire length, electrolyte concentration, the capacity of electrolyte, and so on. It is concluded that the wire length below 15 meters has no influence reaction results ; the electrolyte of 1M KCL (aq) in the sensor with the volume of 17c.c. reached its full efficiency, and the voltage signal would provide stable response over four months. The total cost to fabricate a dissolved oxygen sensor is kept under NT$ 350. Wen-Shang Hou 侯文祥 2006 學位論文 ; thesis 89 zh-TW |
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碩士 === 國立臺灣大學 === 生物環境系統工程學研究所 === 94 === The process of aquaculture is frequently affected by many factors, that cause oxygen deficit phenomena in the water and lead to death of fish . Since the dissolved oxygen sensor remain high in price, it would cost substantial expenditure to establish a monitoring system for cultivation .Therefore, this research utilizes low cost sensor design and assembly to develop simple and self-operated oxygen dissolving detecting system.
The foundation of developing the economical sensor is adoping Galvanic cell. The voltage magnitude and the dissolved oxygen is correlated according to oxidation-reduction reaction. The dissolved oxygen sensor is composed of Ag + Zn electrode, P.E. membrane, KCl solution, plastic shell, and wires. The sensitivity and aging speed of the detecting device may be influenced by several factors, including wire length, electrolyte concentration, the capacity of electrolyte, and so on. It is concluded that the wire length below 15 meters has no influence reaction results ; the electrolyte of 1M KCL (aq) in the sensor with the volume of 17c.c. reached its full efficiency, and the voltage signal would provide stable response over four months. The total cost to fabricate a dissolved oxygen sensor is kept under NT$ 350.
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author2 |
Wen-Shang Hou |
author_facet |
Wen-Shang Hou Ya-Yuan Cheng 鄭雅元 |
author |
Ya-Yuan Cheng 鄭雅元 |
spellingShingle |
Ya-Yuan Cheng 鄭雅元 Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen |
author_sort |
Ya-Yuan Cheng |
title |
Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen |
title_short |
Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen |
title_full |
Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen |
title_fullStr |
Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen |
title_full_unstemmed |
Design and Fabrication of Low-Cost Sensor of Dissolved Oxygen |
title_sort |
design and fabrication of low-cost sensor of dissolved oxygen |
publishDate |
2006 |
url |
http://ndltd.ncl.edu.tw/handle/19297321546336235569 |
work_keys_str_mv |
AT yayuancheng designandfabricationoflowcostsensorofdissolvedoxygen AT zhèngyǎyuán designandfabricationoflowcostsensorofdissolvedoxygen AT yayuancheng dīzàojiàróngyǎnggǎncèqìzhīshèjìyǔyánfā AT zhèngyǎyuán dīzàojiàróngyǎnggǎncèqìzhīshèjìyǔyánfā |
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