Momwe Njira Yosinthira ndi Kuchotsera Mphamvu ya Infrared Remote Control Imagwirira Ntchito

M'miyoyo yathu yamakono, zowongolera kutali za infrared zakhala chida chosavuta kwa ife chowongolera zida zapakhomo. Kuyambira pa wailesi yakanema mpaka pa zoziziritsa mpweya, komanso mpaka pa zosewerera ma multimedia, kugwiritsa ntchito ukadaulo wa infrared kuli ponseponse. Komabe, mfundo yogwirira ntchito kumbuyo kwa chowongolera kutali cha infrared, makamaka njira yosinthira ndi kugawa, sizikudziwika kwenikweni. Nkhaniyi ifotokoza momwe chowongolera kutali cha infrared chimagwirira ntchito, ndikuwulula njira yake yolumikizirana yogwira mtima komanso yodalirika.

Kusinthasintha: Gawo Lokonzekera Chizindikiro

Kusinthasintha mawu ndi gawo loyamba pa kutumiza mawu, lomwe limaphatikizapo kusintha chidziwitso cha malamulo kukhala mtundu woyenera kutumiza mawu opanda waya. Mu infrared remote control, njirayi nthawi zambiri imachitika pogwiritsa ntchito Pulse Position Modulation (PPM).

Mfundo Zokhudza Kusinthasintha kwa PPM

PPM ndi njira yosavuta yosinthira mawu yomwe imapereka chidziwitso mwa kusintha nthawi ndi malo a ma pulse. Batani lililonse pa remote control lili ndi code yapadera, yomwe mu PPM imasinthidwa kukhala mndandanda wa ma pulse signals. M'lifupi ndi malo a ma pulse amasiyana malinga ndi malamulo a ma code, kuonetsetsa kuti chizindikirocho ndi chapadera komanso chodziwika bwino.

Kusintha kwa Katundu

Pogwiritsa ntchito PPM, chizindikirocho chiyeneranso kusinthidwa kukhala ma frequency enaake. Ma frequency wamba onyamula ndi 38kHz, omwe ndi ma frequency omwe amagwiritsidwa ntchito kwambiri mu ma infrared remote controls. Njira yosinthira imakhudza kusintha ma milingo apamwamba ndi otsika a chizindikiro cholembedwacho kukhala mafunde amagetsi a ma frequency ofanana, zomwe zimathandiza kuti chizindikirocho chifalikire kwambiri mumlengalenga pamene chikuchepetsa kusokoneza.

Kukulitsa ndi Kutulutsa Zizindikiro

Chizindikiro chosinthidwa chimakulitsidwa kudzera mu amplifier kuti zitsimikizire kuti chili ndi mphamvu zokwanira zotumizira mauthenga opanda waya. Pomaliza, chizindikirocho chimatulutsidwa kudzera mu infrared emitting diode (LED), kupanga mafunde a infrared omwe amapereka malamulo owongolera ku chipangizo chomwe chikufunidwa.

Kuchepetsa: Kulandira ndi Kubwezeretsa Zizindikiro

Kuchotsa mphamvu ndi njira yosinthira mphamvu, yomwe imayang'anira kubwezeretsa chizindikiro cholandilidwa mu chidziwitso choyambirira cha lamulo.

Kulandila Zizindikiro

Diode yolandira ma infrared (Photodiode) imalandira chizindikiro cha infrared chomwe chimatulutsa ndikuchisintha kukhala chizindikiro chamagetsi. Gawoli ndi lofunika kwambiri pa njira yotumizira ma signali chifukwa limakhudza mwachindunji ubwino ndi kulondola kwa chizindikirocho.

Kusefa ndi Kuchotsa

Chizindikiro chamagetsi cholandiridwacho chingakhale ndi phokoso ndipo chiyenera kukonzedwa kudzera mu fyuluta kuti chichotse phokoso ndikusunga zizindikiro pafupi ndi pafupipafupi yonyamulira. Pambuyo pake, demodulator imazindikira malo a ma pulses motsatira mfundo ya PPM, ndikubwezeretsa chidziwitso choyambirira chomwe chidalembedwa.

Kukonza ndi Kulemba Zizindikiro

Chizindikiro chochepetsedwa chingafunike kukonza zizindikiro zina, monga kukulitsa ndi kupanga mawonekedwe, kuti zitsimikizire kukhazikika ndi kulondola kwa chizindikirocho. Chizindikiro chokonzedwacho chimatumizidwa ku microcontroller kuti chizindikire, chomwe chimazindikira khodi yozindikiritsa chipangizocho ndi khodi yogwirira ntchito motsatira malamulo okonzedweratu a code.

Kukwaniritsa Malamulo

Akamaliza kulemba ma code, microcontroller imagwiritsa ntchito malangizo ofanana kutengera code yogwirira ntchito, monga kuwongolera switch ya chipangizocho, kusintha voliyumu, ndi zina zotero. Njirayi ikuwonetsa kutha komaliza kwa kutumiza chizindikiro cha infrared remote control.

Mapeto

Njira yosinthira ndi kuchotsera mphamvu ya infrared remote control ndiyo maziko a njira yake yolumikizirana yogwira mtima komanso yodalirika. Kudzera mu njirayi, titha kukwaniritsa kulamulira bwino zida zapakhomo. Ndi kupita patsogolo kosalekeza kwa ukadaulo, zida zowongolera infrared remote zikukonzedwanso nthawi zonse kuti zikwaniritse zosowa zathu zowongolera zomwe zikukula. Kumvetsetsa njirayi sikuti kungotithandiza kugwiritsa ntchito bwino zida zowongolera infrared remote komanso kumatithandiza kumvetsetsa bwino ukadaulo wolumikizirana wopanda zingwe.