Ukudluliselwa kwe-Analog - Umgogodla Wokuxhumana Kwezimboni
Ukudluliselwa kwe-analog kuyindlela yendabuko yokudlulisa ulwazi. Ngokungafani nomlingani wayo wedijithali, isebenzisa isignali eqhubekayo ukumela ulwazi. Ezinhlelweni zokulawula zezimboni, lokhu kuvame ukubaluleka ngenxa yesidingo sempendulo yesikhathi sangempela kanye nokushintsha kwedatha okubushelelezi.
Ukuvela nokusetshenziswa kobuchwepheshe bokulawula izimboni kwaletha inguquko yesithathu yezimboni, engathuthukisanga nje kuphela ukusebenza kahle komsebenzi kodwa futhi yasindisa izindleko eziningi zomsebenzi nezinye. Ukulawulwa kwezimboni kubhekisela ekulawulweni kokuzenzakalela kwezimboni, okubhekisela ekusetshenzisweni kobuchwepheshe bekhompyutha, ubuchwepheshe be-microelectronics, kanye nezindlela zikagesi ukwenza inqubo yokukhiqiza nokukhiqiza yefektri ibe ngokuzenzakalelayo, esebenza kahle, enembile, futhi elawulekayo futhi ibonakale. Izindawo eziyinhloko zokulawulwa kwezimboni ziseziteshini ezinkulu zamandla, ezindizayo, ekwakhiweni kwamadamu, ekushiseni kokulawula izinga lokushisa kwezimboni, kanye nase-ceramics. Kunezinzuzo ezingenakuphikwa. Ezifana nalezi: Ukuqapha amagridi kagesi ngesikhathi sangempela kudinga ukuqoqa inani elikhulu lamanani edatha nokwenza ukucubungula okuphelele. Ukungenelela kobuchwepheshe bokulawula izimboni kwenza kube lula ukucutshungulwa kwenani elikhulu lolwazi.
Ukwakheka Kokudluliselwa Kwe-Analog
Ukudluliswa kwe-analog kuhilela ukusetshenziswa kobubanzi obuqhubekayo bamanani. Kuguqula inani elibonakalayo, njengokushisa noma ingcindezi, libe yi-voltage noma izimpawu zamanje ezihambisanayo. Lokhu kuqhubeka kunikeza ukunemba, okwenza ukudluliswa kwe-analog kube yinto ethandwayo ezimbonini lapho ukunemba kubaluleke kakhulu.
Inani le-analog libhekisela enanini elishintsha njalo inani eliguquguqukayo ebangeni elithile; okungukuthi, lingathatha noma yiliphi inani (ngaphakathi kwebanga lenani) ngaphakathi kwebanga elithile (isizinda sencazelo). Inani ledijithali liyinani elihlukile, hhayi inani lokushintsha okuqhubekayo, futhi lingathatha amanani amaningana ahlukile, njengezinto eziguquguqukayo zedijithali ezimbili ezingathatha amanani amabili kuphela.
Kungani Ukhetha Ukudluliselwa Kwe-Analog?
Ukudluliselwa kwe-analog kungaba yindlela enenzuzo yokudlulisa ulwazi ngezizathu eziningana:
1. Isimo Semvelo:Izenzakalo eziningi zemvelo ziyi-analog, ngakho azidingi ukuguqulwa kwedijithali ngaphambi kokudluliselwa. Isibonelo, izimpawu zomsindo nezokubukwayo ziyi-analog ngokwemvelo.
2. Ubulula Behadiwe:Izinhlelo zokudlulisa i-analog, njengezinhlelo zomsakazo we-FM/AM, zivame ukuba lula futhi zingabizi kakhulu kunezinhlelo zedijithali. Lokhu kuyazuzisa lapho kusethwa izinhlelo lapho izindleko nobulula kuyizinto ezibalulekile.
3. Ukubambezeleka Okuphansi:Izinhlelo ze-analog zivame ukunikeza ukubambezeleka okuncane kunezedijithali, njengoba zingadingi isikhathi sokufaka ikhodi nokuhlela isignali.
4. Amaphutha Okushelela:Izinhlelo ze-analog zingalungisa izinhlobo ezithile zamaphutha ngendlela izinhlelo zedijithali ezingenakukwazi ngayo. Isibonelo, ohlelweni lwedijithali, iphutha le-bit eyodwa lingabangela inkinga enkulu, kodwa ohlelweni lwe-analog, umsindo omncane uvame ukubangela ukuphambuka okuncane.
5. Ukudluliselwa kwe-Analog Emabangeni Amakhulu:Ezinye izinhlobo zezimpawu ze-analog, njengamaza omsakazo, zingahamba amabanga amade futhi aziphazamiseki kalula njengezinye izimpawu zedijithali.
Kodwa-ke, kubalulekile futhi ukukhuluma ngezithiyo zokudluliselwa kwe-analog. Isibonelo, zisengozini enkulu yokulahlekelwa yikhwalithi ngenxa yomsindo, ukuwohloka, kanye nokuphazamiseka, uma kuqhathaniswa nezimpawu zedijithali. Futhi azinazo izici ezithuthukisiwe zezinhlelo zedijithali, njengokuthola amaphutha kanye nokukwazi ukulungisa.
Isinqumo phakathi kokudluliselwa kwe-analog kanye nedijithali ekugcineni sincike ezidingweni ezithile zohlelo lokusebenza.
Izinga lokushisa, umswakama, ingcindezi, izinga lokugeleza, njll. okukalwa yinzwa konke kuyizimpawu ze-analog, kuyilapho ngokuvamile ezivulekile nezivalekile ziyizibonakaliso zedijithali (ezibizwa nangokuthi zedijithali). Izimpawu zokudlulisa ngokuvamile ziyizibonakaliso ze-analog, ezingama-voltage angu-4-20mA noma angu-0-5V, angu-0-10V. Abasebenzi bokwakha bakhetha ukusebenzisa i-4-20mA ukudlulisa izimpawu ze-analog ezimweni zokulawula zezimboni, futhi abavami ukusebenzisa i-0-5V kanye ne-0-10V.
Iyini imbangela?
Okokuqala, ngokuvamile ukuphazamiseka kwe-electromagnetic emafektri noma ezindaweni zokwakha kubi kakhulu, futhi izimpawu ze-voltage zisengozini enkulu yokuphazamiseka kunezibonakaliso zamanje. Ngaphezu kwalokho, ibanga lokudlulisela lesignali yamanje likude kunebanga lokudlulisela lesignali ye-voltage futhi ngeke libangele ukuncishiswa kwesignali.
Okwesibili, Ugesi wesignali wezinsimbi ezijwayelekile ungu-4-20mA (4-20mA kusho ukuthi ugesi omncane ungu-4mA, ugesi omkhulu ungu-20mA). Ugesi ophansi kakhulu ongu-4mA usetshenziswa ngoba ungabona iphuzu lokunqamula. Ugesi ophezulu ongu-20mA usetshenziselwa ukuhlangabezana nezidingo zokumelana nokuqhuma, ngoba amandla angase abe khona enhlansini abangelwa ukuvulwa kwesignali yamanje engu-20mA awanele ukukhanyisa iphuzu lokuqhuma kwegesi evuthayo. Uma idlula u-20mA, kunengozi yokuqhuma. Njengalapho inzwa yegesi ibona amagesi avuthayo naqhumayo njenge-carbon monoxide ne-hydrogen, kufanele kuqashelwe ukuvikelwa kokuqhuma.
Okokugcina, Uma uthumela isignali, cabanga ukuthi kukhona ukumelana entanjeni. Uma kusetshenziswa ukudluliswa kwe-voltage, kuzokhiqizwa ukwehla kwe-voltage ethile entanjeni, futhi isignali ekugcineni kokwamukela izokhiqiza iphutha elithile, okuzoholela ekulinganisweni okungalungile. Ngakho-ke, ezinhlelweni zokulawula zezimboni, ukudluliswa kwesignali yamanje kuvame ukusetshenziswa lapho ibanga elide lingaphansi kwamamitha ayi-100, kanti ukudluliswa kwesignali ye-voltage engu-0-5V kungasetshenziswa ekudlulisweni kwebanga elifushane.
Ohlelweni lokulawula lwezimboni, i-transmitter ayibalulekile, futhi indlela yokudlulisa ye-analog ye-transmitter ibaluleke kakhulu. Ngokwendawo yakho yokusebenzisa, ububanzi bokulinganisa nezinye izici, khetha imodi yokukhipha i-analog ye-transmitter ehambisanayo ukuze ufinyelele ukulinganisa okunembile futhi usize ukusebenza kwakho. Sine-element yensimbi evuvukile/i-element yensimbi engagqwali enhle kakhulu, inzwa/i-probe yokushisa nomswakama, umkhiqizo kanye nensizakalo ye-alamu yegesi engaqhumi. Kunezinhlobo eziningi zosayizi ozikhethelayo, insizakalo yokucubungula eyenziwe ngokwezifiso nayo iyatholakala.
Isikhathi sokuthunyelwe: Disemba 12-2020
