Kugwiritsa Ntchito ndi Makhalidwe a Fiber Bragg Grating Humidity Sensors

M'munda wa kuyeza, kuyang'anira kutentha ndi chinyezi kuyenera kukhala ndi gawo lalikulu m'malo osiyanasiyana. Ndi kupita patsogolo kwa sayansi ndi ukadaulo komanso kufunikira kwa mafakitale, zofunika zapamwamba zayikidwa patsogolo kutentha ndi chinyezi masensa mwa mawu a chilengedwe kusinthasintha, kuyeza kulondola, ndi muyeso osiyanasiyana. Zomwe zikuchitika pano ndikuti ma sensor a kutentha kwa magetsi ndi chinyezi akadali otchuka pamsika chifukwa cha zabwino zawo monga mtengo wotsika., liwiro poyankha mwachangu, ndi kukonza ma signal osavuta. Komabe, pali zinthu zina ndi masensa amagetsi omwe sangathe kunyalanyazidwa, monga kusasinthasintha kosasintha komanso kusakhazikika kwanthawi yayitali, ndipo sizoyenera kugwiritsidwa ntchito m'magawo monga magetsi, zamagetsi, ndi mafakitale a petrochemical komwe kuli malo oyaka ndi kuphulika koopsa.

Ndi chitukuko chofulumira cha sayansi ndi zamakono, kufunikira kwa kuyeza kolondola kwa magawo amthupi m'chilengedwe kukukulirakulira. Panthawi imeneyi, ukadaulo wa fiber optic sensing wapezanso chitukuko chokwanira komanso kugwiritsa ntchito kwambiri, kuphatikiza ukadaulo wogwiritsa ntchito fiber Bragg gratings pakuzindikira ndi kuyeza. Monga amadziwika bwino, fiber optic gratings imatha kuyeza kutentha molondola, nkhawa, kupsyinjika, kusamuka, kuthamangitsa, ndi zina., pomwe kuyeza chinyezi cha chilengedwe ndi gawo lomwe langopangidwa kumene lomwe likukumana ndi zovuta zambiri zasayansi ndi uinjiniya. Zomverera zachikhalidwe za chinyezi zimagwiritsa ntchito zida zogwirira ntchito kuti zizitha kuyamwa chinyezi chachilengedwe ndikusintha magawo awo amagetsi monga kukana ndi kuthekera kwa kuzindikira chinyezi., while fiber Bragg gratings measure humidity by converting changes in water molecule content in the environment into changes in optical parameters of light waves, zomwe zili ndi ubwino wake pakuyezera kolondola kwambiri.

M'minda yazamlengalenga, magetsi ndi magetsi, zankhondo ndi zanyengo, mankhwala ndi fodya, m'pofunika kuwunika chilengedwe chinyezi. Choncho, kuwongolera magwiridwe antchito a zida zowunikira chinyezi ndikuwonetsetsa kuti zikukwaniritsa zosowa zamalo osiyanasiyana ozindikira ndikofunikira kwambiri.. Mitundu yachikhalidwe yamasensa a chinyezi imaphatikizapo mtundu wa tsitsi, chonyowa ndi youma babu mtundu, komanso capacitive, resistive ndi zina chinyezi masensa. Mitundu iyi ya masensa a chinyezi imatha kusokonezedwa ndi madera ovuta monga ma electromagnetic, mafuta ndi gasi, osakhazikika bwino, ndi malire ogwiritsira ntchito. Masensa a chinyezi amagwiritsidwa ntchito kwambiri m'magawo ambiri, monga kulamulira mafakitale, kupanga mankhwala, kubzala kwaulimi, kuzindikira zanyengo, ndi kusunga chakudya. Ndikofunikira kwambiri kukwaniritsa kuyeza mwachangu komanso molondola kwa chinyezi m'magawo awa. Mature electrical humidity sensor products in the market, such as resistive humidity sensors and capacitive humidity sensors, have advantages such as high measurement accuracy and fast response speed. Komabe, their long-term stability and interchangeability are poor, and they may fail and even cause safety accidents in certain special applications (such as strong electromagnetic environments and oil and gas detection environments). Choncho, a passive detection humidity sensor is needed in some flammable and explosive situations.

Electrical sensors have been widely used in various testing and measurement equipment, but they have many limitations, such as transmission loss, susceptibility to interference, and inability to be applied in harsh environments. In recent years, with the development of optoelectronics, zizindikiro za kuwala zasintha pang'onopang'ono zizindikiro zamagetsi mu masensa chifukwa cha zotsutsana ndi kusokoneza komanso kutayika kochepa.

Masensa a Fiber optic ndi masensa omwe samakhudzidwa mosavuta ndi maginito amagetsi. Iwo ali otetezeka mwachibadwa (i.e. choletsa moto, zosaphulika) ndipo amatha kutengera malo oyaka komanso ophulika monga magetsi, zamagetsi, mankhwala, ndi mafakitale ogulitsa mankhwala. Komanso, ma sensa a fiber optic ali ndi voliyumu yaying'ono, kulemera kopepuka, ndipo amayikidwa mosavuta m'malo opapatiza kuti aziwunika maukonde akutali.

Chomwe chimagwiritsidwa ntchito kwambiri ndi fiber optic humidity sensor ndi fiber optic grating chinyezi sensa. Fiber optic grating mtundu wa kutentha ndi sensa ya chinyezi ndi mtundu watsopano wa kutentha ndi chinyezi chomwe chapangidwa ndi chitukuko cha teknoloji yolankhulana ndi fiber optic.. Poyerekeza ndi chikhalidwe magetsi kutentha ndi chinyezi masensa, ili ndi zabwino monga kusokoneza kwa anti electromagnetic, zabwino zotsekera magetsi, ndi lalikulu dynamic range. Kuphatikiza apo, gawo lozindikira ndilopepuka, yaying'ono mu kukula, zosiyana mu kapangidwe ndi mawonekedwe a geometric, ndi yosavuta kugwiritsanso ntchito pamanetiweki kuti mukwaniritse zenizeni zenizeni, pa intaneti, ndi kugawa zomverera. Chifukwa cha kusamva kwa fiber optic gratings ku chinyezi, amayenera kuphatikizidwa ndi zinthu zokhudzidwa ndi chinyezi kuti apange zigawo zomwe zimakhudzidwa ndi chinyezi.

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