【作者】 李东升； 隋青美； 贾磊；

【Author】 Li Dongsheng,1,2 Sui Qingmei 1,2 Jia Lei 1,2 (1 School of Control Science and Engineering,Shandong University,Jinan,Shandong 250061,China) (2 Optical Fiber Sensor Technology and Engineering Research Center,Shandong University,Jinan,Shandong 250061,China)

【机构】 山东大学控制科学与工程学院； 山东大学光纤传感技术工程研究中心；

【摘要】 采用CDM和TDM混合复用技术的光纤光栅传感网络能大幅提升系统的复用能力,但结构复杂,动态测试性能较差,工程上不易实现。本文提出一种新的采用CDM和WDM混合复用技术的光纤光栅传感网络结构,通过对测点直接进行二维CDMA编码,在不影响系统动态测试性能的同时增加了复用能力,且结构简单,便于工程实现。仿真试验表明,该结构可以在10nm范围内布置49个测点,每个测点的量程可达10nm。更多还原

【Abstract】 A FBG sensing network using CDM + TDM increases the multiplying density,but decreases the network’s dynamic performances and is difficult to implement in engineering for its complex structure.In this paper,a new kind of FBG sensing network using CDM + WDM by coding measuring points directly with 2D-CDMA codes is proposed,which increases the multiplying density while not influence its dynamic performances and is easy to implement in engineering for its simple structure.Simulation experiment indicates that in a spectral range of 10nm,this type of sensing network can arrange 49 FBG sensors and the measuring range of every sensor reaches 10 nm.更多还原