光纤光栅传感网络时域地址查询技术

Time-domain addressing techniques for fiber Bragg grating sensor system

介绍了光纤光栅传感网络时域地址查询技术的工作原理和时、空分复合复用装置,全面介绍了单信道输出和多信道输出无源时域地址查询技术和有源多信道输出时域地址查询技术。多信道输出技术使得系统具备实时监测能力,有源技术使得系统的信噪比达25 dB,因此多信道输出有源时域地址查询技术将代表了时域地址查询技术的发展方向。

The working principle of time - domain addressing techniques is introduced. The scheme of a passive fiber Bragg grating sensor system using combined spatial - and time - division multiplexing technique is shown. Both active and passive interrogation schematics with single -output channel and multi -output channel time -domain addressing techniques are described, respectively. Multi - channel scheme is with the function of real - time moni- toring. Active interrogation scheme is with a SNR of 25 dB. Therefore, multi - channel output active time - domain addressing techniques present the development direction of the fiber Bragg grating sensor system.