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TiO_2 thin film temperature sensor monitored by smartphone

机译：智能手机监控的TiO_2薄膜温度传感器

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摘要

A novel TiO2 thin film temperature sensor monitored by smartphone is proposed and demonstrated. The sensing head is constructed by titanium dioxide thin film deposited on the polished quartz fiber tip. A smartphone and a diffraction grating are employed as interrogation system. Fiber with 45 degrees polished tip connect the flashlight and the camera on the smartphone, and the diffraction grating spreads the transmission spectrum over the camera's pixels, allowing for repeatable measurements of shifts of the spectrum. Using this method, the reflection intensity of sensor can be measured by smartphone and then the surrounding temperature is monitored by the shift of the reflection spectrum. The experimental results show that the sensor exhibits a good linearity over a temperature range of -10 degrees C to 180 degrees C with the sensitivity of 0.4 6 pixel/degrees C. Consequently, the interrogation method can provide a low-cost, integrated and intelligent measurement platform for thin film fiber temperature sensor.
机译：提出并演示了一种新型的由智能手机监控的TiO2薄膜温度传感器。传感头由沉积在抛光石英纤维尖端上的二氧化钛薄膜构成。智能电话和衍射光栅被用作询问系统。 45度抛光尖端的光纤将手电筒和智能手机上的相机连接起来，而衍射光栅将透射光谱散布在相机像素上，从而可重复测量光谱的偏移。使用此方法，可以通过智能手机测量传感器的反射强度，然后通过反射光谱的移动来监视周围的温度。实验结果表明，该传感器在-10摄氏度至180摄氏度的温度范围内具有良好的线性度，灵敏度为0.4 6像素/摄氏度。因此，该询问方法可以提供低成本，集成化和智能化的解决方案。薄膜光纤温度传感器的测量平台。

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