Muhupenyu hwedu hwazvino, infrared remote control yave chishandiso chakanakira isu kudzora midziyo yemumba. Kubva paterevhizheni kusvika kune maairconditioner, uye kune vatambi vemultimedia, kushandiswa kweinfrared tekinoroji kunowanikwa kwese. Nekudaro, iyo musimboti wekushanda kuseri kweiyo infrared remote control, kunyanya iyo modulation uye demodulation maitiro, inozivikanwa zvishoma. Ichi chinyorwa chichaongorora magadzirirwo echiratidzo cheiyo infrared remote control, ichiburitsa maitiro ayo anoshanda uye akavimbika ekutaurirana.
Modulation: Nhanho yekugadzirira yeChiratidzo
Modulation inhanho yekutanga mukufambiswa kwechiratidzo, iyo inosanganisira kushandura ruzivo rwekuraira kuita fomati yakakodzera kutapurirana isina waya. Mune infrared remote control, maitiro aya anowanzoitwa uchishandisa Pulse Position Modulation (PPM).
Nheyo dzePPM Modulation
PPM inzira yakapfava yekumisikidza iyo inopa ruzivo nekushandura nguva uye nzvimbo yekupuruzira. Bhatani rega rega riri paremote control rine kodhi yakasarudzika, iyo muPPM inoshandurwa kuita nhevedzano yezviratidzo zvepulse. Hupamhi uye nzvimbo yemapulses inosiyana zvichienderana nemitemo yekodhi, kuve nechokwadi chekusiyana uye kuzivikanwa kwechiratidzo.
Carrier Modulation
Pahwaro hwePPM, chiratidzo chinodawo kugadziridzwa kune chaiyo inotakura frequency. Iyo yakajairika mutakuri frequency ndeye 38kHz, iri frequency inoshandiswa zvakanyanya mune infrared remote controls. Iyo modulation maitiro inosanganisira kushandura yakakwira uye yakaderera mazinga eiyo encoded mafungu kuita emagetsi mafungu eiyo inoenderana frequency, ichibvumira iyo chiratidzo kuti ipararire mberi mumhepo ichideredza kupindira.
Signal Amplification uye Emission
Iyo modulated siginecha inokwidziridzwa kuburikidza neamplifier kuti ive nechokwadi chekuti ine simba rakakwana rekutumira isina waya. Chekupedzisira, chiratidzo chinoburitswa kuburikidza neiyo infrared emitting diode (LED), ichigadzira infrared light wave iyo inoendesa mirairo yekutonga kune yakananga mudziyo.
Demodulation: Signal Reception uye Kudzoreredza
Demodulation ndiyo inverse process of modulation, ine mutoro wekudzoreredza iyo yakagamuchirwa chiratidzo muruzivo rwekutanga rwekuraira.
Signal Reception
Iyo infrared inogamuchira diode (Photodiode) inogamuchira yakaburitswa infrared chiratidzo uye inoishandura kuita chiratidzo chemagetsi. Iyi nhanho ndiyo yakakosha yekubatanidza muchiratidzo chekufambisa kwechiratidzo nekuti inobata zvakananga kunaka uye kurongeka kwechiratidzo.
Kusefa uye Demodulation
Chiratidzo chemagetsi chinogamuchirwa chinogona kunge chine ruzha uye chinoda kugadziriswa kuburikidza nesefa kuti ibvise ruzha uye kuchengetedza masaini pedyo neiyo inotakura frequency. Zvadaro, iyo demodulator inoona nzvimbo yemapulses maererano nePPM musimboti, kudzoreredza iyo yekutanga encoded ruzivo.
Signal Processing uye Decoding
Chiratidzo chakaderedzwa chinogona kudiwa kuenderera mberi kwechiratidzo, sekusimudzira uye kuumbwa, kuve nechokwadi chekugadzikana uye chokwadi chechiratidzo. Chiratidzo chakagadziriswa chinozotumirwa kune iyo microcontroller yekudhirodha, iyo inozivisa kodhi yekuzivikanwa yemudziyo uye kodhi yekushandisa zvinoenderana neyakagadzikwa yekodhi yemitemo.
Kuitwa kweMirairo
Kana iyo decoding ichinge yabudirira, iyo microcontroller inoita mirairo inoenderana zvichienderana nekodhi yekushanda, sekudzora switch yechigadzirwa, kugadziridzwa kwevhoriyamu, etc. Iyi nzira inoratidza kupera kwekupedzisira kwechiratidzo chekufambisa kweiyo infrared remote control.
Mhedziso
Iyo modulation uye demodulation maitiro eiyo infrared remote control ndiyo musimboti weiyo inoshanda uye yakavimbika nzira yekutaurirana. Kuburikidza nemaitiro aya, tinogona kuwana kudzora chaiko kwemidziyo yemumba. Nekuenderera mberi kwekufambira mberi kwetekinoroji, infrared remote controls zvakare inogara ichigadziriswa uye kukwidziridzwa kuti isangane nekukura kwedu kwekutonga zvinodiwa. Kunzwisisa maitiro aya hakungotibatsiri chete kushandisa infrared remote controls zviri nani asiwo kunoita kuti tive nekunzwisisa kwakadzama kwewireless communication technology.
Nguva yekutumira: Aug-16-2024
