Based on the characteristic of spectrum absorption of acetylene, an optical fiber detection system for methane gas is presented, which has reference channel and is for on line and real time detection.
基于乙炔气体的光谱吸收特性，采用一种带有参考通道的光纤乙炔气体在线实时检测系统。
This system is constituted with the optical fiber sensor, signal detection electric circuit, single chip processing circuit and display unit.
该系统由光纤传感器、信号检测电路、单片机处理电路和显示装置组成。
FIG. 2 illustrates one embodiment of an optical communications system 200 with fiber break detection according to the present invention that includes a co-propagating Raman optical pump.
图2描述的是根据本发明的具有光纤中断检测的、包括同向传播的拉曼光泵浦的光通信系统200的一个实施例。
FIG. 2 illustrates one embodiment of an optical communications system with fiber break detection according to the present invention that includes a co-propagating Raman optical pump.
图2描述的是根据本发明的具有光纤中断检测的、包括同向传播的拉曼光泵浦的光通信系统的一个实施例。
Firstly, the thesis addresses the works on analysis and designs of optical path system, detection circuit, and fiber probes.
首先完成光路系统、检测电路和介质检测器的分析与设计。
Thus, there is also a desire to build an optical fiber communications system with fiber break detection that does not generate false indications of a fiber break.
因此，同样需要构造一种具有不产生光纤中断的错误指示的光纤中断检测的光纤通信系统。
This paper will proposed a machine vision-based optical fiber ferrule end face detection system design and implementation to satisfy the actual demand inside the factory.
本文针对工厂里的实际需求，提出了一种基于机器视觉的光纤插芯端面缺陷检测系统的设计与实现方法。
The experiment results of optical fiber detection show the system can successfully perform the defect detection of optical fibers. Furthermore, it has higher discrimination comparing with the CJTC.
光纤检测实验表明，系统能够实现光纤的缺陷检测，并且具有比传统的联合变换相关器更高的识别能力。
Corresponding experiments show the reliability of the phase congruency detection system and the high phase congruency between optical fiber laser hydrophones.
相应的实验表明相位一致性检测系统的可靠性和高的光纤激光器水听器之间的相位一致性。
The signal detection principle, preferences and the system performance are discussed in optical fiber Brillouin sensing system based on microwave heterodyne technique.
讨论了微波外差式光纤布里渊传感系统的信号检测原理、参数选择和系统性能。
The signal detection principle, preferences and the system performance are discussed in optical fiber Brillouin sensing system based on microwave heterodyne technique.
讨论了微波外差式光纤布里渊传感系统的信号检测原理、参数选择和系统性能。
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