Mu makina owonera monga laser ranging, LiDAR, ndi kuzindikira zomwe zili mu target, ma transmitter a Er:Glass laser amagwiritsidwa ntchito kwambiri pa ntchito zankhondo komanso za anthu wamba chifukwa cha chitetezo chawo m'maso komanso kudalirika kwawo. Kuwonjezera pa mphamvu ya pulse, kubwerezabwereza (frequency) ndi gawo lofunikira kwambiri poyesa magwiridwe antchito. Zimakhudza laser.'liwiro la mayankho, kuchuluka kwa deta yolandirira, ndipo zimagwirizana kwambiri ndi kasamalidwe ka kutentha, kapangidwe ka magetsi, ndi kukhazikika kwa makina.
1. Kodi Kuchuluka kwa Laser N'chiyani?
Mafupipafupi a laser amatanthauza kuchuluka kwa ma pulse omwe amatulutsidwa pa unit ya nthawi, omwe nthawi zambiri amayesedwa mu hertz (Hz) kapena kilohertz (kHz). Amadziwikanso kuti repetition rate, ndi chizindikiro chofunikira cha magwiridwe antchito a ma pulsed lasers.
Mwachitsanzo: 1 Hz = 1 laser pulse pa sekondi, 10 kHz = 10,000 laser pulses pa sekondi. Ma laser ambiri a Er:Glass amagwira ntchito mu pulsed mode, ndipo ma frequency awo amalumikizidwa kwambiri ndi output waveform, system sampling, ndi target echo processing.
2. Mafupipafupi Osiyanasiyana a Er: Magalasi a Laser
Kutengera ndi laser'Malinga ndi kapangidwe ka kapangidwe kake ndi zofunikira pakugwiritsa ntchito, ma transmitter a laser a Er:Glass amatha kugwira ntchito kuyambira pa single-shot mode (otsika ngati 1 Hz) mpaka makumi a kilohertz (kHz). Ma frequency apamwamba amathandizira kusanthula mwachangu, kutsatira mosalekeza, komanso kupeza deta yambiri, komanso zimapangitsa kuti pakhale kufunikira kwakukulu pakugwiritsa ntchito mphamvu, kuyang'anira kutentha, komanso moyo wonse wa laser.
3. Zinthu Zofunika Kwambiri Zomwe Zimakhudza Kuchuluka kwa Kubwerezabwereza
①Kapangidwe ka Magwero a Pampu ndi Mphamvu
Magwero a pampu ya laser diode (LD) ayenera kuthandizira kusintha kwa liwiro lapamwamba komanso kupereka mphamvu yokhazikika. Ma module amphamvu ayenera kukhala oyankha bwino komanso ogwira ntchito bwino kuti azitha kuyendetsa/kutseka pafupipafupi.
②Kusamalira Kutentha
Ma frequency akakwera, kutentha kumapangidwa kwambiri pa nthawi iliyonse. Ma heat sink ogwira ntchito bwino, TEC temperature control, kapena microchannel cooling structures zimathandiza kuti ntchito ya chipangizochi ikhale yokhazikika komanso kukulitsa nthawi yogwira ntchito.
③Njira Yosinthira Q
Kusinthasintha kwa Q (monga kugwiritsa ntchito makhiristo a Cr:YAG) nthawi zambiri kumakhala koyenera kugwiritsa ntchito ma laser otsika pafupipafupi, pomwe kusintha kwa Q (monga kugwiritsa ntchito ma acousto-optic kapena ma electro-optic modulators monga ma Pockels cell) kumathandiza kuti ma frequency othamanga agwire ntchito bwino kwambiri ndi ma programmable control.
④Kapangidwe ka Module
Mapangidwe a mitu ya laser yopapatiza komanso yosagwiritsa ntchito mphamvu zambiri amatsimikizira kuti mphamvu ya kugunda kwa mtima imasungidwa ngakhale pa ma frequency apamwamba.
4. Malangizo Ofananiza Mafupipafupi ndi Kugwiritsa Ntchito
Zochitika zosiyanasiyana zogwiritsira ntchito zimafuna ma frequency osiyanasiyana ogwirira ntchito. Kusankha kuchuluka koyenera kobwerezabwereza ndikofunikira kwambiri kuti muwonetsetse kuti ikugwira ntchito bwino. Nazi zitsanzo ndi malangizo omwe amagwiritsidwa ntchito nthawi zambiri:
①Mafupipafupi Ochepa, Mphamvu Yambiri (1)–20 Hz)
Zabwino kwambiri pa laser range ndi target designation yakutali, komwe kulowa mkati ndi kukhazikika kwa mphamvu ndizofunikira.
②Mafupipafupi Apakati, Mphamvu Yapakati (50)–500 Hz)
Yoyenera kugwiritsa ntchito mafakitale osiyanasiyana, kuyenda, ndi machitidwe omwe ali ndi ma frequency ochepa.
③Ma Frequency Aakulu, Mphamvu Yochepa (>1 kHz)
Yoyenera kwambiri machitidwe a LiDAR okhudzana ndi kusanthula kwa array, kupanga ma point cloud, ndi 3D modeling.
5. Zochitika Zaukadaulo
Pamene kuphatikiza kwa laser kukupitilira kupita patsogolo, mbadwo wotsatira wa ma transmitter a laser a Er:Glass ukusintha m'njira zotsatirazi:
①Kuphatikiza kuchuluka kwa kubwerezabwereza kwakukulu ndi zotsatira zokhazikika
②Kuyendetsa galimoto mwanzeru komanso kuwongolera pafupipafupi
③Kapangidwe kopepuka komanso kogwiritsa ntchito mphamvu zochepa
④Mapangidwe owongolera kawiri a ma frequency ndi mphamvu, zomwe zimathandiza kusintha kwa mawonekedwe osinthasintha (monga, kusanthula/kuyang'ana/kutsatira)
6. Mapeto
Mafupipafupi ogwirira ntchito ndi gawo lofunika kwambiri pakupanga ndi kusankha ma transmitter a laser a Er:Glass. Sizimangotsimikizira momwe deta imagwirira ntchito komanso momwe makina amagwirira ntchito komanso zimakhudza mwachindunji kayendetsedwe ka kutentha ndi nthawi ya laser. Kwa opanga mapulogalamu, kumvetsetsa bwino momwe mafupipafupi ndi mphamvu zimagwirira ntchito.—ndi kusankha magawo omwe akugwirizana ndi pulogalamu inayake—ndi chinsinsi chowongolera magwiridwe antchito a dongosolo.
Musazengereze kulankhulana nafe kuti mudziwe zambiri zokhudza mitundu yosiyanasiyana ya zinthu zathu zotumizira laser za Er:Glass zomwe zimakhala ndi ma frequency ndi specifications osiyanasiyana.'Tili pano kuti tikuthandizeni kukwaniritsa zosowa zanu zaukadaulo pa ntchito zosiyanasiyana, LiDAR, navigation, ndi chitetezo.
Nthawi yotumizira: Ogasiti-05-2025