Ukadaulo wozindikira mawu patali pogwiritsa ntchito laser

Ukadaulo wozindikira mawu patali pogwiritsa ntchito laser
Laserkuzindikira mawu akutali: Kuwulula kapangidwe ka makina ozindikira

Kuwala kopyapyala kwa laser kumavina mokongola mlengalenga, kufunafuna chete mawu akutali, mfundo yomwe ili kumbuyo kwa "matsenga" aukadaulo awa amtsogolo ndi yodabwitsa komanso yodzaza ndi chithumwa. Lero, tiyeni titsegule chophimba pa ukadaulo wodabwitsawu ndikuwunika kapangidwe kake kodabwitsa ndi mfundo zake. Mfundo yodziwira mawu akutali ya laser ikuwonetsedwa mu Chithunzi 1(a). Dongosolo lodziwira mawu akutali la laser limapangidwa ndi dongosolo loyezera kugwedezeka kwa laser ndi cholinga choyezera kugwedezeka kosagwirizana. Malinga ndi njira yodziwira kubwerera kwa kuwala, dongosolo lodziwira likhoza kugawidwa m'mitundu yosasokoneza ndi mtundu wosokoneza, ndipo chithunzi cha schematic chikuwonetsedwa motsatana mu Chithunzi 1(b) ndi (c).

CHITHUNZI 1 (a) Chithunzi cha block cha kuzindikira mawu akutali ndi laser; (b) Chithunzi cha schematic cha njira yoyezera kugwedezeka kwakutali ndi laser yosagwirizana ndi interferometric; (c) Chithunzi chachikulu cha njira yoyezera kugwedezeka kwakutali ndi laser yogwirizana ndi interferometric

一. Dongosolo lozindikira losasokoneza Kuzindikira kosasokoneza ndi khalidwe losavuta la abwenzi, kudzera mu kuwala kwa laser pamwamba pa cholinga, ndi kuyenda kwa oblique kwa azimuth yowunikira modulation zomwe zimapangitsa kusintha kwa mbali yolandirira mphamvu ya kuwala kapena chithunzi cha speckle kuti ayesere mwachindunji kugwedezeka kwa micro-surface yofunidwa, kenako "molunjika kupita molunjika" kuti akwaniritse kuzindikira kwakutali kwa chizindikiro cha acoustic. Malinga ndi kapangidwe ka cholandirira.chowunikira zithunzi, dongosolo losasokoneza lingagawidwe m'magulu a mtundu umodzi ndi mtundu wa gulu. Pakati pa kapangidwe ka mfundo imodzi ndi "kukonzanso chizindikiro cha mawu", kutanthauza kuti kugwedezeka kwa pamwamba pa chinthucho kumayesedwa poyesa kusintha kwa mphamvu ya kuwala kozindikira komwe kumayambitsidwa ndi kusintha kwa mawonekedwe a kuwala kobwerera. Kapangidwe ka mfundo imodzi kali ndi ubwino wa mtengo wotsika, kapangidwe kosavuta, kuchuluka kwa zitsanzo zambiri komanso kukonzanso chizindikiro cha mawu nthawi yeniyeni malinga ndi momwe detector imayankhira, koma zotsatira za laser speckle zidzawononga ubale wa mzere pakati pa kugwedezeka ndi mphamvu ya kuwala kozindikira, kotero zimaletsa kugwiritsa ntchito njira yodziwira yosasokoneza ya mfundo imodzi. Kapangidwe ka gulu kamakonzanso kugwedezeka kwa pamwamba pa chandamale kudzera mu algorithm yokonza zithunzi za speckle, kotero kuti dongosolo loyezera kugwedezeka likhale losinthasintha kwambiri ku malo ozungulira, ndipo likhale lolondola komanso lomveka bwino.

Ndiponso. Dongosolo lozindikira kusokoneza ndi losiyana ndi kusazindikira kosokoneza, kuzindikira kusokoneza kuli ndi chithumwa chosalunjika, mfundo yake ndi kudzera mu kuwala kwa laser pamwamba pa cholinga, malo omwe akulunjika motsatira mzere wowala wa kusuntha kupita ku kuwala kwakumbuyo kumayambitsa kusintha kwa gawo/mafupipafupi, kugwiritsa ntchito ukadaulo wosokoneza poyesa kusintha kwa pafupipafupi/gawo kuti mupeze muyeso wakutali wa kugwedezeka kwa micro-vibration. Pakadali pano, ukadaulo wapamwamba kwambiri wozindikira wa interferometric ukhoza kugawidwa m'mitundu iwiri malinga ndi mfundo ya ukadaulo woyesera wa laser Doppler vibration ndi njira yodzisokoneza ya laser kutengera kuzindikira kwakutali kwa chizindikiro cha acoustic. Njira yoyezera kugwedezeka kwa Laser Doppler imachokera pa Doppler effect ya laser kuti izindikire chizindikiro cha mawu poyesa kusintha kwa pafupipafupi kwa Doppler komwe kumachitika chifukwa cha kugwedezeka kwa pamwamba pa chinthu chomwe chikufunidwa. Ukadaulo wa laser wodzisakaniza wa interferometry umayesa kusamuka, liwiro, kugwedezeka ndi mtunda wa cholinga polola gawo la kuwala komwe kumawonetsedwa kwa cholinga chakutali kuti lilowenso mu resonator ya laser ndikuyambitsa kusintha kwa amplitude ndi mafupipafupi a laser field. Ubwino wake uli mu kukula kochepa komanso kukhudzidwa kwakukulu kwa makina oyezera kugwedezeka, komansolaser yamphamvu yochepaingagwiritsidwe ntchito kuzindikira chizindikiro cha mawu chakutali. Dongosolo loyezera lokha la laser losinthasintha pafupipafupi kuti lizindikire chizindikiro cha mawu chakutali likuwonetsedwa pa Chithunzi 2.

CHITHUNZI 2 Chithunzi cha dongosolo loyezera la laser lodzisakaniza lokha

Monga njira yothandiza komanso yothandiza yaukadaulo, "matsenga" a laser amasewerera kulankhula patali osati kokha pankhani yozindikira, komanso pankhani yozindikira motsutsana ili ndi magwiridwe antchito abwino komanso kugwiritsa ntchito kwakukulu - ukadaulo wotsutsa kulowerera kwa laser. Ukadaulo uwu ukhoza kukwaniritsa njira zotsutsana kulowerera kwa mamita 100 m'nyumba, m'maofesi ndi m'malo ena a khoma lagalasi, ndipo chipangizo chimodzi chimatha kuteteza bwino chipinda chamisonkhano chokhala ndi malo okwana 15 masikweya mita, kuwonjezera pa liwiro la kuyankha mwachangu pakusanthula ndi kuyiyika mkati mwa masekondi 10, kulondola kwakukulu kwa malo opitilira 90%, komanso kudalirika kwakukulu pantchito yokhazikika kwa nthawi yayitali. Ukadaulo wotsutsa kulowerera kwa laser ungapereke chitsimikizo champhamvu cha chitetezo cha chidziwitso cha ogwiritsa ntchito m'maofesi ofunikira amakampani ndi zochitika zina.