Ukudluliswa kwe-Analog - Umgogodla Wokuxhumana Kwezimboni
Ukudluliswa kwe-analogi kuyindlela evamile yokudlulisa ulwazi. Ngokungafani nozakwabo wedijithali, isebenzisa isignali eqhubekayo ukumela ulwazi. Ezinhlelweni zokulawula izimboni, lokhu kuvame ukuba semqoka ngenxa yesidingo sokuphendula ngesikhathi sangempela kanye nokushintshwa kwedatha okushelelayo.
Ukuvela kanye nokusetshenziswa kobuchwepheshe bokulawula izimboni kwaletha uguquko lwesithathu lwezimboni, olungagcinanga nje ngokuthuthukisa kakhulu ukusebenza kahle komsebenzi kodwa futhi lwasindisa inqwaba yezisebenzi nezinye izindleko. Ukulawulwa kwezimboni kubhekisela ekulawuleni okuzenzakalelayo kwezimboni, okubhekisela ekusetshenzisweni kobuchwepheshe bamakhompiyutha, ubuchwepheshe be-microelectronics, kanye nezindlela zikagesi ukwenza inqubo yokukhiqiza nokukhiqiza ifektri kube okuzenzakalelayo, okuphumelelayo, okunembayo, nokulawuleka futhi kubonakale. Izindawo eziyinhloko zokulawulwa kwezimboni kuseziteshini zikagesi ezinkulu, i-aerospace, ukwakhiwa kwamadamu, ukushisisa kokulawula izinga lokushisa ezimbonini, nezitsha zobumba. Inezinzuzo ezingenakubuyiselwa. Okufana nokuthi: Ukuqapha kwesikhathi sangempela kwamagridi kagesi kudinga ukuqoqa inani elikhulu lamanani edatha futhi kuqhube ukucubungula okuphelele. Ukungenelela kobuchwepheshe bokulawula izimboni kusiza ukucutshungulwa kwenani elikhulu lolwazi.
I-Anatomy ye-Analog Transmission
Ukudluliswa kwe-analogi kubandakanya ukusetshenziswa kwebanga eliqhubekayo lamanani. Iguqula amanani angokwenyama, njengezinga lokushisa noma ingcindezi, ibe amandla kagesi ahambisanayo noma amasignali amanje. Lokhu kuqhubeka kunikeza ukunemba, okwenza ukudluliswa kwe-analogi kube ukuya ezimbonini lapho ukunemba kubaluleke kakhulu.
Ubuningi be-analogi bubhekisela enanini eliguquguqukayo ngokuqhubekayo ebangeni elithile; okusho ukuthi, ingathatha noma yiliphi inani (ngaphakathi kwebanga lenani) phakathi kobubanzi obuthile (isizinda esichazayo).Inani ledijithali liyinani elihlukile, alilona inani elishintshayo eliqhubekayo, futhi lingathatha amanani amaningana ahlukene, afana neziguquguquki zedijithali kanambambili. ingathatha amanani amabili kuphela.
Kungani Khetha Ukudluliswa kwe-Analog?
Ukudluliswa kwe-analogi kungaba yindlela enenzuzo yokudlulisa ulwazi ngezizathu ezimbalwa:
1. Ifomu Lemvelo:Izimo eziningi zemvelo ziyi-analog, ngakho-ke azidingi ukuguqulwa kwedijithali ngaphambi kokudluliselwa. Isibonelo, amasiginali alalelwayo nabonwayo ayi-analog ngokwemvelo.
2. Izingxenyekazi zekhompuyutha Ezilula:Amasistimu wokudlulisa we-analogi, njengezinhlelo zomsakazo we-FM/AM, avame ukuba lula futhi angabizi kakhulu kunezinhlelo zedijithali. Lokhu kunenzuzo lapho uhlela amasistimu lapho izindleko nobulula kuyizici ezinkulu.
3. Ukubambezeleka Okuphansi:Amasistimu e-analogi ngokuvamile anganikeza ukubambezeleka okuncane kunawedijithali, njengoba engadingi isikhathi sombhalo wekhodi nokuqopha isignali.
4. Amaphutha Okusheshisa:Amasistimu e-analogi angakwazi ukushelela ezinye izinhlobo zamaphutha ngendlela amasistimu edijithali angakwazi ngayo. Isibonelo, ohlelweni lwedijithali, iphutha elilodwa elincane lingabangela inkinga enkulu, kodwa ohlelweni lwe-analogi, amanani amancane omsindo ngokuvamile abangela amanani amancane okuhlanekezela.
5. Ukudluliswa kwe-Analogi Amabanga Amakhulu:Ezinye izinhlobo zezimpawu ze-analogi, njengamaza omsakazo, zingahamba amabanga amade futhi azivimbeki kalula njengamasignali athile edijithali.
Kodwa-ke, kubalulekile futhi ukusho izithiyo zokudluliswa kwe-analog. Isibonelo, basengozini enkulu yokulahlekelwa yikhwalithi ngenxa yomsindo, ukuwohloka, nokuphazamiseka, uma kuqhathaniswa namasignali edijithali. Futhi ayinazo izici ezithuthukile zezinhlelo zedijithali, njengokutholwa kwamaphutha namandla okulungisa.
Isinqumo phakathi kokudluliselwa kwe-analog nedijithali ekugcineni sincike ezidingweni ezithile zohlelo lokusebenza.
Izinga lokushisa, umswakama, ukucindezela, izinga lokugeleza, njll. okukalwa inzwa wonke amasignali e-analog, kuyilapho okuvamise ukuvuleka nokuvamise ukuvaleka amasignali edijithali (okubizwa nangokuthi idijithali).Amasiginali wokudlulisa ngokuvamile amasignali e-analog, angu-4-20mA yamanje. noma 0-5V, 0-10V voltage. Abasebenzi bokwakha bancamela ukusebenzisa i-4-20mA ukuze badlulisele amasiginali e-analog ezimeni zokulawula izimboni, futhi abavamile ukusebenzisa i-0-5V kanye ne-0-10V.
Siyini isizathu?
Okokuqala, ngokuvamile ukuphazamiseka kukazibuthe kagesi ezimbonini noma ezindaweni zokwakha kubi kakhulu, futhi amasignali kagesi angaphazanyiswa kalula kunezimpawu zamanje. Ngaphezu kwalokho, ibanga lokudlulisela lesignali yamanje likude kunebanga lokudlulisela lesignali ye-voltage futhi ngeke libangele ukuncishiswa kwesignali.
Okwesibili, Isignali yamanje yezinsimbi ezijwayelekile i-4-20mA (4-20mA isho ukuthi ubuncane bamanje ngu-4mA, ubuningi bamanje ngu-20mA).I-4mA ephansi kakhulu isetshenziswa ngoba ingakwazi ukubona iphuzu lokunqamula. Ubukhulu obungu-20mA busetshenziselwa ukuhlangabezana nezidingo zokuvikela ukuqhuma, ngoba amandla enhlansi angaba khona okubangelwa ukucisha kwesignali yamanje engu-20mA ayanele ukuthungela indawo yokuqhuma kwegesi evuthayo. Uma idlula i-20mA, kunengozi yokuqhuma. Njengalapho inzwa yegesi ithola amagesi avuthayo neziqhumane njenge-carbon monoxide ne-hydrogen, kufanele kuqashelwe ukuvikela ukuqhuma.
Ekugcineni, Lapho uthumela isignali, cabanga ukuthi kukhona ukumelana ocingweni. Uma ukuhanjiswa kwe-voltage kusetshenziswa, ukwehla kwe-voltage ethile kuzokhiqizwa ocingweni, futhi isignali ekugcineni kokwamukela izoveza iphutha elithile, elizoholela ekulinganisweni okungalungile. Ngakho-ke, ezinhlelweni zokulawula zezimboni, ukudluliswa kwesignali kwamanje kuvame ukusetshenziswa lapho ibanga elide lingaphansi kwamamitha ayi-100, futhi ukudluliselwa kwesignali ye-voltage engu-0-5V kungasetshenziselwa ukudluliswa kwebanga elifushane.
Ohlelweni lokulawula izimboni, isidlulisi sibalulekile, futhi indlela yokudlulisela ye-analog yokudlulisela iwukucatshangelwa okubaluleke kakhulu. Ngokuya ngendawo oyisebenzisayo, ibanga lokulinganisa nezinye izici, khetha imodi ehambisanayo yokuphuma kwe-analog yesidlulisi ukuze ufinyelele isilinganiso esinembile futhi usize umsebenzi wakho. Sinesici esihle kakhulu sensimbi/insimbi engagqwali. Inzwa/inzwa yomswakama, izinga lokushisa kanye nenzwa yomswakama, umkhiqizo wezindlu ovikela ukuqhuma kwe-alamu yegesi kanye nesevisi. Kukhona osayizi abaningi ozikhethele, isevisi yokucubungula eyenziwe ngezifiso iyatholakala.
Isikhathi sokuthumela: Dec-12-2020
