一种应用PLD-PMTR技术的荧光光纤温度计

通过对光纤荧光温度传感器中影响系统准确度的荧光寿命检测技术的研究，利用双参考信号、脉冲调制激励光源的锁相检测技术对荧光光纤温度传感器的荧光寿命进行检测，推导出测量荧光寿命的数学模型.给出了应用该技术的温度测量方案及实验结果，该方法具有高的信噪比且对激励光泄露有很强的抑制作用.系统的输出信号可以准确地进行长距离传输且很容易与计算机接口.实验表明，该方法是有效和实用的，达到了系统要求.

A Fluorescence Fiber-optic Thermometer of Using PLD-PMTR Detection Technology

The fluorescence lifetime detection technology which was the key technique for optical fiber fluorescence temperature sensor was studied. The method of Pulse modulated PLD with two references (PLD-PMTR) was adopted in this paper. And the lifetime of fluorescence fiber temperature sensor was detected. The mathematic model has been deduced. This method has a high signal to noise ratio and can restrain the excitation leakage. The measurement output of system can be transferred faithfully over long distance and it easy to interface with a computer. Through experiments the method is efficient and practical. It can attain the demand of the system.