This article analyzes the progress in the theory and technology of fiber grating sensors and introduces the recent progress in application of fiber grating sensor and sensing network system 摘要分析了光纖光柵傳感器的理論及技術(shù)發(fā)展,介紹了光纖光柵器及其傳感網(wǎng)絡(luò)系統(tǒng)應(yīng)用的最新進(jìn)展。
In the next place, the constituent modules of distributed fbg strain-sensing network are analyzed on principle and designed . especially, the performance parameters of the fbg sensor are designed concretely 其次,對分布式光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的各個組成模塊分別進(jìn)行了原理分析和器件設(shè)計,特別對fbg傳感頭的各項性能指標(biāo)進(jìn)行了具體分析和設(shè)計。
In this thesis, we have studied the fbg sensor used in the distributed fbg sensing demodulation system, fbg sensing networks based on the fp demodulation technology and mof & mof fbg 本論文的研究重點為:用于分布式光纖光柵傳感解調(diào)系統(tǒng)中的可實用化的溫度和應(yīng)變傳感器、基于fp解調(diào)的傳感解調(diào)系統(tǒng)的研制、微結(jié)構(gòu)光纖光柵和微結(jié)構(gòu)光纖光柵傳感的研究。
After analyzing the sense principles and calculation expression for piezoelectricity, we compose a sense network, compare the difference between the voltage amplifier and charge amplifier, give out the electric circuit of piezoelectric sensor for measure system 在分析了壓電片對動態(tài)應(yīng)變的傳感原理和計算表達(dá)式后,該系統(tǒng)采用壓電傳感器組建了一個傳感器網(wǎng)絡(luò)。并且對比了電壓放大器和電荷放大器的差異。
In the first place, start with theoretic model of distributed fbg strain-sensing network, sensing principle of fiber bragg grating is analyzed and sensing model created . on the basis of analyzing advantages and disadvantages of several familiar multiplexing and demodulation techniques, a mixture multiplexing method that combines optical frequency domain reflectometry ( ofdr ) and wavelength division multiplexing ( wdm ) is proposed to address fbg sensing array . at the same time, tunable narrow-band light source, which is composed of wide-band light source and tunable optical filter, is adopted to demodulate multiplex signals 首先,論文從分布式光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的理論模型入手,分析了光纖布拉格光柵的傳感機(jī)理,建立光纖光柵應(yīng)變傳感模型;在分析比較了常見幾種復(fù)用技術(shù)和信號解調(diào)技術(shù)的優(yōu)缺點基礎(chǔ)上,提出應(yīng)用光頻域反射復(fù)用技術(shù)和波分復(fù)用技術(shù)相結(jié)合的混合復(fù)用方法來解決光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的尋址問題,采用由寬帶光源和可調(diào)諧光濾波器組成的可調(diào)諧窄帶光源來解調(diào)復(fù)用信號,通過理論分析和實驗研究證實了系統(tǒng)方案的可行性。
In this dissertation, strain-sensing network of distributed fbg is designed systemically and researched by experiment . based on analysis of domestic and foreign study actualities on fbg, development trend and several main problems of fbg sensor in application are summarized . and in the need of practical strain-sensing system of distributed fbg network, we research the following five aspects such as design for fbg sensor, signal demodulation of fbg strain-sensing network, multiplexing and addressing, light source design and temperature compensation 本文以分布式光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的系統(tǒng)設(shè)計和實驗研究為目的,在對國內(nèi)外研究現(xiàn)狀進(jìn)行了深入分析的基礎(chǔ)上,歸納了當(dāng)前光纖光柵傳感器的發(fā)展趨勢及在實際應(yīng)用中需要解決的幾個主要問題,并針對分布式光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的實際系統(tǒng)所需,從光纖光柵傳感頭設(shè)計、光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的信號解調(diào)、復(fù)用尋址、光源設(shè)計以及溫度補償這五個方面展開研究。
In this dissertation, strain-sensing network of distributed fbg is designed systemically and researched by experiment . based on analysis of domestic and foreign study actualities on fbg, development trend and several main problems of fbg sensor in application are summarized . and in the need of practical strain-sensing system of distributed fbg network, we research the following five aspects such as design for fbg sensor, signal demodulation of fbg strain-sensing network, multiplexing and addressing, light source design and temperature compensation 本文以分布式光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的系統(tǒng)設(shè)計和實驗研究為目的,在對國內(nèi)外研究現(xiàn)狀進(jìn)行了深入分析的基礎(chǔ)上,歸納了當(dāng)前光纖光柵傳感器的發(fā)展趨勢及在實際應(yīng)用中需要解決的幾個主要問題,并針對分布式光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的實際系統(tǒng)所需,從光纖光柵傳感頭設(shè)計、光纖光柵應(yīng)變傳感網(wǎng)絡(luò)的信號解調(diào)、復(fù)用尋址、光源設(shè)計以及溫度補償這五個方面展開研究。