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首頁> 外文OA文獻(xiàn) >High-sensitivity fiber Bragg grating temperature sensor at high temperature 一種高溫下高靈敏光纖光柵溫度傳感器的制作方法ud
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High-sensitivity fiber Bragg grating temperature sensor at high temperature 一種高溫下高靈敏光纖光柵溫度傳感器的制作方法ud

機(jī)譯:High-sensitivity fiber Bragg grating temperature sensor at high temperature 一種高溫下高靈敏光纖光柵溫度傳感器的制作方法ud

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摘要

A method of making full use of the durable strain which fiber Bragg grating (FBG) can undertake is presented, which hugely improves the sensitivities of FBG temperature sensors at high temperature. When a sensor is manufactured at room temperature, its FBG should be given a pre-relaxing length according to the temperature it is asked to measure; once the temperature rise to the asked one, its FBG starts to be stretched and it starts to work with high sensitivity. The relationship between the pre-relaxing length and the working temperature is analyzed. In experiments, when the pre-relaxing lengths are 0.2mm、0.5mm、0.6mm, the working temperatures rise 25℃、50℃、61℃, respectively, and the sensitivities are almost the same (675pm/℃). The facts that the experimental results agree well with the theoretical analyses verify this method’s validity.
機(jī)譯:提出了一種充分利用光纖布拉格光柵(FBG)可以承受的持久應(yīng)變的方法,該方法極大地提高了FBG溫度傳感器在高溫下的靈敏度。當(dāng)傳感器在室溫下制造時(shí),應(yīng)根據(jù)要求測量的溫度為其FBG賦予預(yù)松弛長度;一旦溫度升至要求的溫度,其FBG就會(huì)開始伸展,并開始以高靈敏度工作。分析了預(yù)松弛長度與工作溫度之間的關(guān)系。在實(shí)驗(yàn)中,當(dāng)預(yù)松弛長度分別為0.2mm,0.5mm,0.6mm時(shí),工作溫度分別升高25℃,50℃,61℃,靈敏度幾乎相同(675pm /℃)。實(shí)驗(yàn)結(jié)果與理論分析吻合良好,證明了該方法的有效性。

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