Laga soo bilaabo cutubyada ugu horreeya ee ToF ilaa lidar ilaa DMS-ga hadda jira, dhammaantood waxay isticmaalaan guutada infrared-ka dhow:
Qaabka TOF (850nm/940nm)
LiDAR (905nm/1550nm)
DMS/OMS (940nm)
Isla mar ahaantaana, daaqada indhaha waa qayb ka mid ah dariiqa indhaha ee baaraha/qaataha. Shaqadeeda ugu weyni waa inay ilaaliso badeecada iyadoo gudbinaysa laysarka mawjadaha dhererka gaarka ah ee ka soo baxaya isha laysarka, iyo ururinta mowjadaha iftiinka ee u dhigma ee daaqadda.
Daaqadani waa inay lahaataa shaqooyinka aasaasiga ah ee soo socda:
1. Muuqaal ahaan u muuqda madow si ay u daboosho qalabka optoelectronic ee ka dambeeya daaqadda;
2. Milicsiga guud ee muraayadda muraayadda indhaha ayaa hooseeya mana keeni doonto milicsi muuqda;
3. Waxay leedahay gudbin wanaagsan oo loogu talagalay band laysarka. Tusaale ahaan, qalabka ugu caansan ee 905nm laser detector, gudbinta daaqada ee band 905nm waxay gaari kartaa in ka badan 95%.
4. Sifee iftiinka waxyeelada leh, hagaajinta saamiga signal-ilaa-sanqa ee nidaamka, oo kor u qaad awoodda ogaanshaha ee lidar.
Si kastaba ha noqotee, LiDAR iyo DMS labaduba waa alaabada baabuurta, markaa sida alaabooyinka daaqadu u buuxin karaan shuruudaha kalsoonida wanaagsan, gudbinta sare ee kooxda isha iftiinka, iyo muuqaalka madow ayaa noqday dhibaato.
01. Soo koobida xalalka daaqada ee hadda suuqa yaala
Waxaa jira saddex nooc oo waaweyn:
Nooca 1: Substrate-ku wuxuu ka samaysan yahay walxo gasha infrared
Qalabka noocan oo kale ah waa madow sababtoo ah waxay nuugi kartaa iftiinka muuqda oo gudbin kara xargaha infrared-ka dhow, oo leh gudbinta qiyaastii 90% (sida 905nm ee qaybta u dhow-infrared) iyo guud ahaan milicsiga qiyaastii 10%.
Qalabka noocan oo kale ah wuxuu isticmaali karaa substrates resin infrared aadka u hufan, sida Bayer Makrolon PC 2405, laakiin substrate resinku wuxuu leeyahay xoog iskuxiran oo liita oo leh filimka indhaha, uma adkeysan karo tijaabooyin adag oo deegaanka ah, lagumana dhejin karo filim hufan oo ITO ah oo la isku halleyn karo (loo isticmaalo korantada iyo defogging), sidaas awgeed nooca aan la isticmaalin ee aan la isticmaalin u baahan kuleyl.
Waxa kale oo aad dooran kartaa SCHOTT RG850 ama Chinese HWB850 galaas madow, laakiin kharashka noocan ah galaas madow waa mid sare. Haddii aan tusaale u soo qaadano galaaska HWB850, qiimihiisu waxa uu 8 jeer ka badan yahay muraayadda indhaha ee caadiga ah ee isku cabbirka ah, badi badeecadaha noocan ahina kama gudbi karaan heerka ROHS sidaas awgeedna laguma dabaqi karo daaqadaha daboolka laga sameeyo.
Nooca 2: Isticmaalka khad gudbinta infrared
Noocan ah khad gasha infrared-ku waxa uu nuugaa iftiinka muuqda waxana uu gudbin karaa xadhkaha infrared-ka agtiisa ah, iyada oo gudbinta u dhaxaysa 80% ilaa 90%, iyo guud ahaan heerka gudbintu waa hooseeyaa. Intaa waxaa dheer, ka dib markii khad lagu daro substrate indhaha, caabbinta cimiladu ma dhaafi karto shuruudaha adag ee iska caabinta cimilada (sida imtixaanada heerkulka sare), sidaas darteed khadadka infrared ayaa inta badan loo isticmaalaa alaabooyinka kale ee leh shuruudaha iska caabinta cimilada hooseeya sida telefoonada casriga ah iyo kamaradaha infrared.
Nooca 3: Isticmaalka shaandhada indhaha ee dahaarka madow
Filterka dahaarka leh ee madow waa shaandheyn xannibi karta iftiinka muuqda oo leh gudbinta sare ee kooxda NIR (sida 905nm).
Shaandheeyaha dahaarka leh ee madow waxaa loogu talagalay silikoon hydride, silicon oxide iyo walxo kale oo filim khafiif ah, waxaana lagu diyaariyey iyadoo la adeegsanayo tignoolajiyada sputtering magnetron. Waxaa lagu gartaa waxqabad xasiloon oo la isku halayn karo waxaana la soo saari karaa tiro badan. Waqtigan xaadirka ah, filimada shaandhada indhaha ee madow ee caadiga ah waxay guud ahaan qaataan qaab-dhismeed la mid ah filim-joojin-iftiin ah. Sida ku cad habka caadiga ah ee silikoon hydride magnetron sputtering film habka samaynta, tixgelinta caadiga ah waa in la yareeyo nuugista ee hydride silicon, gaar ahaan nuugista ee band infrared dhow, si loo hubiyo in gudbin xad sare ee band 905nm ama kooxaha kale ee lidar sida 1550nm.
Waqtiga boostada: Nov-22-2024
