Kodi kulankhulana kwa opanda zingwe kwa kuwala n'chiyani?

Kulankhulana kwa Opanda Waya (OWC) ndi njira yolankhulirana yowunikira momwe zizindikiro zimatumizidwa pogwiritsa ntchito kuwala kowoneka bwino, kwa infrared (IR), kapena kwa ultraviolet (UV).

Makina a OWC omwe amagwira ntchito pa mafunde owoneka (390 — 750 nm) nthawi zambiri amatchedwa Visual light communication (VLC). Makina a VLC amagwiritsa ntchito ma diode otulutsa kuwala (ma LED) ndipo amatha kugunda mofulumira kwambiri popanda zotsatira zooneka pa kuwala ndi maso a munthu. VLC ingagwiritsidwe ntchito m'njira zosiyanasiyana kuphatikizapo LAN yopanda zingwe, LAN yaumwini yopanda zingwe komanso kulumikizana kwa magalimoto. Kumbali ina, makina a OWC omwe amagwiritsidwa ntchito pansi, omwe amadziwikanso kuti machitidwe a free space optics (FSO), amagwira ntchito pa ma frequency apafupi ndi infrared (750 — 1600 nm). Makinawa nthawi zambiri amagwiritsa ntchito ma laser emitters ndipo amapereka maulalo owonekera pa protocol otsika mtengo okhala ndi mitengo yayikulu ya data (monga 10 Gbit/s pa mafunde) ndipo amapereka njira yothetsera mavuto a backhaul. Chidwi cha kulumikizana kwa ultraviolet (UVC) chikukulirakuliranso chifukwa cha kupita patsogolo kwaposachedwa kwa magwero a kuwala/zowunikira zomwe zimagwira ntchito mu UV spectrum yobisika ndi dzuwa (200 — 280 nm). Mu gulu lotchedwa deep ultraviolet band ili, kuwala kwa dzuwa sikungawonekere pansi, zomwe zimapangitsa kuti pakhale njira yopangira chowunikira ma photon-count ndi cholandirira cha wide-field chomwe chimawonjezera mphamvu yolandiridwa popanda kuwonjezera phokoso lowonjezera lakumbuyo.

Kwa zaka zambiri, chidwi cha kulumikizana kwa mawaya opanda zingwe chakhala chikugwiritsidwa ntchito makamaka pa ntchito zankhondo zachinsinsi komanso ntchito zamlengalenga kuphatikiza maulumikizidwe apakati pa satellite ndi malo ozama. Mpaka pano, kulowa kwa msika waukulu wa OWC kwakhala kochepa, koma IrDA ndi njira yopambana kwambiri yotumizira mawaya afupiafupi.

Kuchokera ku kulumikizana kwa kuwala m'mabwalo ophatikizika mpaka maulalo olumikizirana akunja mpaka kulumikizana kwa satelayiti, mitundu yosiyanasiyana ya kulumikizana kwa kuwala opanda zingwe ingagwiritsidwe ntchito m'njira zosiyanasiyana zolumikizirana.

Kulankhulana opanda zingwe kwa kuwala kungagawidwe m'magulu asanu malinga ndi mtundu wa ma transmission:

1. Mtunda waufupi kwambiri

Kulumikizana pakati pa ma chip mu mapaketi okhala ndi ma chip ambiri omangidwa molimba komanso molimba.

2. Mtunda waufupi

Mu IEEE 802.15.7 yokhazikika, kulumikizana pansi pa madzi pogwiritsa ntchito Body Local Area Network (WBAN) yopanda zingwe ndi magwiritsidwe a Personal Local Area Network (WPAN) opanda zingwe.

3. Pakati pa msinkhu

Kulankhulana kwa IR mkati ndi kuwala kooneka (VLC) kwa ma netiweki opanda zingwe am'deralo (WLans) komanso kulumikizana pakati pa galimoto ndi galimoto komanso pakati pa galimoto ndi zomangamanga.

Gawo 4: Kutali

Kulumikizana pakati pa maukonde, komwe kumadziwikanso kuti kulumikizana kwa malo owonera kwaulere (FSO).

5. Mtunda wowonjezera

Kulankhulana kwa laser mumlengalenga, makamaka pa kulumikizana pakati pa ma satellite ndi kukhazikitsidwa kwa magulu a nyenyezi a satellite.