Enqubweni yokulungisa iphutha lenqubo ye-laser, sivame ukubona ipharamitha ye-“PWM”, ngakho-ke isho ukuthini, ake siyibheke namuhla.
I-PWM isifinyezo se-“Pulse Width Modulation” , okubizwa ngokuthi “i-pulse wide modulation” noma “modulation”, iyindlela ephumelela kakhulu yokusebenzisa okukhiphayo kwedijithali kwe-microprocessor ukulawula amasekhethi e-analog.
Imodi yokukhipha i-laser ngokuyinhloko ihlanganisa izinhlobo ezimbili: imodi eqhubekayo kanye nemodi ye-pulse.Imodi eqhubekayo ukudubula okuqhubekayo kwama-lasers;Imodi ye-Pulse iwukukhipha i-laser ngesikhathi esifanayo njalo kwesinye isikhathi.Isibonelo esilula, njengesibani esikhipha ukukhanya kwethoshi: ukuvula iswishi akuvaliwe kuyimodi eqhubekayo;Ukuvula iswishi ngokushesha bese uyivala ukukhipha ishayela, futhi inqubo yokuvula nokuvala ngokuphindaphindiwe imodi ye-pulse.Ngokufanayo, lapho ithoshi lithathelwa indawo i-laser, imodi ye-pulse iwukuphinda inqubo yokuvula nokuvala ukukhanya ngokuqhubekayo.
Indlela eqondile kakhulu yokukhiqiza i-pulsed laser ukufaka imodulator kulaser ye-CW ukuze ulungise i-laser ye-CW ukuze uthole ukuphuma kwe-pulse.I-PWM (Pulse Width Modulation) iwukulungisa ububanzi be-pulse ngokulungisa umjikelezo wokusebenza.
Lapho kulungiswa imingcele yenqubo yokusika kwe-laser, ama-pulses kanye nemijikelezo yomsebenzi ivame ukusetshenziswa, futhi opharetha abaningi abangayijwayele inqubo yokusika i-laser bangase bangaqondi indima yale mingcele emibili, bese bekunikeza isingeniso esiningiliziwe.
1Izikhathi
Isignali isuka phezulu iye phansi futhi ibuyele phezulu isikhathi esiyiviki elilodwa
2Izinga lokuvama kwe-Pulse
Mingaki imijikelezo ye-PWM esekhondini elingu-1
3Umjikelezo we-Pulse duty
Isibonelo sesilinganiso sesikhathi sezinga eliphezulu kuso sonke isikhathi somjikelezo kumjikelezo
4Pul isikhathi nesikhathi
Isikhathi sesikhathi esithathwa umjikelezo
5Ububanzi be-Pulse
Isikhathi sesikhathi esisetshenziselwa inkathi ethile yezinga eliphezulu
6Inani eliphakeme kakhulu lamandla
Ukukhipha amandla ngokushesha kwe-laser ngaphakathi kobubanzi bokushaya kwenhliziyo okukodwa
7Isilinganiso somsebenzi esimaphakathi
Inani lamandla elikhishwa yilaser emjikelezweni wokuphindaphinda
Imvamisa, lapho silinganisa i-laser ekulungiseni iphutha lenqubo ye-laser, amandla aphezulu, imvamisa yokushaya kwenhliziyo kanye nomjikelezo womsebenzi kuyasethwa.Okulandelayo, ake sisebenzise isibonelo ukukhombisa indlela yokubala amapharamitha we-PWM.
Emandleni aphezulu e-laser, umjikelezo womsebenzi we-pulse uyakhula, futhi amandla ku-radiation ye-pulse ngayinye azokhuphuka ngokufanele, okuzokwandisa umthamo wokucubungula ekuqondeni kobukhulu bepuleti.Uma umjikelezo womsebenzi we-pulse uncishisiwe, amandla ku-pulse ngayinye ayakhanyiswa, okusiza ukunciphisa ukushiswa ngokweqile kanye nokulahlekelwa kokuhlanganisa.
Enqubweni yokwenza insimbi, kusetshenziswa amandla e-laser, futhi esimweni samandla e-laser angashintshi, ukuphakama kwemvamisa kukhuphuka, kuncane ukuphuma kwamandla e-laser ngayinye, ngakho-ke sidinga ukunquma imvamisa efanele ngokuya ngejubane lokucubungula. lapho amandla e-laser anele ukuncibilikisa insimbi.
I-laser ye-GW esekelwe kubuchwepheshe bepompo obungu-976nm bemikhiqizo ye-laser ye-fiber eqhubekayo, enekhono eliphezulu lokuguqulwa kwe-electro-optical, ikhwalithi enhle ye-beam ephumayo, imvamisa yokuguquguquka okuphezulu kufika ku-50kHz, esetshenziswa kabanzi ekusikeni, ekushiseleni, ekuhlanzeni, ekuhlanganiseni nasekukhiqizeni okungeziwe.
Isikhathi sokuthumela: Jul-01-2022