氫氣外洩偵測警示器之研究

Study of Gas Sensor for Detecting and Monitoring Hydrogen Leakage

張慶宏(Ching-Hong Chang)

指導教授 ： 林坤緯

朝陽科技大學/資訊學院/資訊工程系/碩士(2015年)

摘要

由於工業進步、科技發達，氫能的使用也越來越廣泛。同樣地，氫能的安全與傳輸也更加顯得重要。本研究中，我們藉由分析不同氫氣濃度於不同的工作溫度之暫態響應與穩態響應，並發展出感測傳輸以及預防事故之感測器應用。
　　由於氫氣感測器實際在偵測氫氣外洩時，會在感測空間內佈建大量的感測器。隨著時間的進行，將產生大量的感測資料，這些大量資料內包含著巨量的冗餘資料。因此，如何消除冗餘的資料是一個很重要的課題，特別是應用在無線感測環境。本研究中，我們使用一個基於一階微分概念的簡單演算法來分析以及減少感測資料。由模擬結果顯示在不同溫度與濃度的情況下，本研究之演算法可以大幅降低冗餘的感測資料，更重要的是減點後的資料並沒有改變原來的感測特性。
　　另一方面由於偵測氫氣洩漏需要即時反應，因此使用減點後的數據做為感測數據並藉由本研究所提之氫氣濃度預測方法進行濃度洩漏模擬。而實驗指出本研究所提出的預警機制能夠準確得知氣體洩漏情形發生。本研究所提的演算法在感測傳輸以及預警方面均有突破性進步，未來將可使的氫氣的感測具有更寬廣的應用。

關鍵字

感測安全 ； 轉折點 ； 一階微分 ； 爆炸偵測 ； 氫氣感測

並列摘要

Due to industrial progress, the application of hydrogen energy has been more and more widespread. In this study, we analysed the state-state and transient response of the studied device under different hydrogen concentrations and operating temperature. Furthermore, the hydrogen sensing transduction and accident prevention were concerned in this studied.
　　For practical applications, it is important to eliminate redundant data, especially in wireless sensing environment. In this study, a simple approach based on first-order differential concept was developed to eliminate redundant sensing data. Simulated results show that in the case of different operating temperatures and hydrogen concentrations, the algorithm of this study can significantly reduce the redundancy of the sensing data.
　　 It is worth to note that the simplified curve still retains the original features of experimental hydrogen transient response. Furthermore, a pre-alarm procedure was adapted for safe concern. Based on these good features, therefore, the studied device provides a promise for high-performance solid-state hydrogen sensor applications.

並列關鍵字

First order differential equation ； Explosion detection ； Hydrogen sensing ； Turning-Point ； Sensing safety

參考文獻

[15] Bing Joe Hwang, “Solid-state Electrolyte Based Electrochemical-gas Sensors,” Chemistry (The Chinese Chem. Soc., Taipei), vol. 59, pp. 207-217, 2001.

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