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为实现煤矿瓦斯浓度的准确检测,采用白光非本征F-P(EFPI)干涉光纤传感瓦斯技术,通过调节EFPI光纤传感器腔长去实现测量瓦斯浓度信息,利用蚂蚁算法对干涉光谱中的归一化的特定级次中谱峰点经过定位且结合了单峰和双峰的测量方式去实现腔长解调。
In order to achieve accurate detection of gas concentration in coal mine, white light extrinsic FP (EFPI) interferometric fiber sensing gas technology is adopted. By adjusting the cavity length of EFPI fiber sensor to measure gas concentration information, ant colony algorithm is used to normalize the interference spectrum The peak-to-peak position of a specific level of the spectrum is measured and combined with unimodal and bimodal measurements to achieve cavity-length demodulation.