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纤维光学传感器是广泛应用传感技术的基础,众所周知,光纤的优越性使其用于传感器特别有吸引力,而且大多数物理量可以用这些传感器来传感。可以传感的一些现象包括光强、位移(位置)、温度、压强、转动、声音、应变、磁场、静电场、辐射、流动、液面、化学分析和振动等。强度调制光纤传感器是简单的接通或断开型传感器的改进型。计数器和开关采用了通-断脉冲的数字特性,而透射和反射型光纤传感器在性质上是模拟型的。测量时,这种传感器调制输出光的强度。此外,还有两个光纤传感器即微弯曲传感器和本征传感器属于此类。
Fiber optic sensors are the basis for the widespread use of sensing technology. As is known, the superiority of optical fibers makes them particularly attractive for sensors, and most physical quantities can be sensed by these sensors. Some phenomena that can be sensed include light intensity, displacement (position), temperature, pressure, rotation, sound, strain, magnetic field, electrostatic field, radiation, flow, liquid level, chemical analysis and vibration. The intensity modulated fiber optic sensor is an improved version of a simple on or off type sensor. The counters and switches use on-off pulse digital characteristics, while transmissive and reflective fiber sensors are analog in nature. When measured, this sensor modulates the intensity of the output light. In addition, there are two fiber optic sensors that micro-bend sensors and intrinsic sensors belong to this category.