Kev ntsuas txoj kev ntawm fiber ntau grating sensor

Fiber grating ntsuas feem ntau suav nrog cov txheej txheem ntawm encapsulating ib qho fiber ntau grating nrog cov khoom sib txawv polymer, kev siv sib txawv FBG ua ke, thiab cov txheej txheem prefabricated. Cov txheej txheem ntawm encapsulating ib leeg fiber grating nrog cov ntaub ntawv polymer siv cov lus teb sib txawv ntawm qee cov organics rau qhov kub thiab txias thiab kev ntxhov siab los ua kom qhov rhiab heev ntawm fiber ntau grating rau qhov kub thiab txias los yog kev ntxhov siab thiab kov yeej cov nyhuv ntoo khaub lig. Txoj kev no yooj yim rau kev tsim khoom, tab sis nws nyuaj rau xaiv cov ntaub ntawv polymer. Siv cov kev sib txawv ntawm FBG ua ke yog sau cov grating ntawm qhov sib txuas ntawm ob hom fibers nrog qhov sib txawv refractive index thiab kub rhiab heev los yog txawv kub teb rhiab heev thiab doping cov ntaub ntawv concentration, thiab siv txawv refractive index thiab kub rhiab heev kom paub qhov txawv kev ntsuas. Txoj kev no yooj yim rau demodulate, thiab demodulation yog wavelength coding kom tsis txhob muaj kev ntxhov siab, tab sis nws muaj teeb meem xws li poob loj, tawg yooj yim ntawm vuam, thiab qhov ntsuas me me. Txoj kev ua ntej-straining yog thawj zaug siv qee yam ua ntej rau cov fiber ntau grating, thiab lo ib feem ntawm cov fiber ntau grating ruaj khov rau ntawm cantilever nyob rau hauv lub pre-strain mob. Tom qab qhov kev ntxhov siab raug tso tawm, qhov tsis sib haum xeeb ntawm fiber ntau grating yog deformed thiab qhov nruab nrab qhov kev xav wavelength tseem tsis hloov pauv; thaum lub sij hawm ib feem ntawm deformation pasted rau ntawm lub cantilever beam tsis tuaj yeem rov qab tau, uas ua rau qhov nruab nrab qhov kev xav wavelength ntawm qhov no ntawm cov fiber ntau grating hloov. Yog li ntawd, qhov no fiber grating Muaj ob lub ntsiab lus ncov. Ib qho kev xav ncov (qhov muab tso rau ntawm lub cantilever beam) yog rhiab rau strain thiab kub; lwm qhov kev xav ncov (qhov tsis tau pasted) tsuas yog rhiab rau qhov kub thiab txias. Lub wavelength hloov ntawm ob lub ntsiab lus siab tuaj yeem ntsuas tau. Ib txhij ntsuas qhov kub thiab txias.