Ana amfani da na'urori masu auna firikwensin a cikin masana'antu masu nauyi, masana'antar haske, masana'antar rubutu, aikin gona, samarwa da gini, ilimin rayuwar yau da kullun da bincike na kimiyya, da sauran fannoni. Analog firikwensin aika fitar da ci gaba da sigina, tare da irin ƙarfin lantarki, halin yanzu, juriya da dai sauransu, girman da auna sigogi. Misali, firikwensin zafin jiki, firikwensin gas, firikwensin matsa lamba da sauransu sune firikwensin adadin analog gama gari.
Analog adadin firikwensin zai kuma gamu da tsangwama yayin watsa sigina, galibi saboda dalilai masu zuwa:
1.Electrostatic jawo tsangwama
Electrostatic induction yana faruwa ne saboda samuwar ƙarfin parasitic tsakanin sassan reshe ko sassan biyu, ta yadda cajin da ke cikin reshe ɗaya yakan koma wani reshe ta hanyar ƙarfin parasitic, wani lokacin kuma ana kiransa capacitive coupling.
2, Tsangwamar shigar da wutar lantarki
Lokacin da aka sami inductance na juna tsakanin da'irori biyu, canje-canje a halin yanzu a cikin da'irar ɗaya suna haɗuwa da ɗayan ta hanyar filin maganadisu, al'amari da aka sani da shigar da wutar lantarki. Ana samun wannan yanayin sau da yawa a cikin amfani da na'urori masu auna firikwensin, buƙatar kulawa ta musamman.
3, Ya kamata mura ta zubewa
Saboda matalauta rufi na bangaren sashi, m post, buga kewaye hukumar, ciki dielectric ko harsashi na capacitor cikin lantarki da'irar, musamman da karuwa da zafi a cikin aikace-aikace yanayi na firikwensin, da rufi juriya na insulator ya ragu, kuma sannan ruwan yoyon zai karu, wanda hakan zai haifar da tsangwama. Tasirin yana da mahimmanci musamman lokacin da ɗigogi na yanzu ke gudana zuwa matakin shigarwa na kewayen awo.
4, Tsangwamar mitar rediyo
Yawanci tashin hankali ne ya haifar da farawa da dakatar da manyan kayan wuta da kuma tsangwama mai girma na jituwa.
5.Sauran abubuwan tsangwama
Yawanci yana nufin rashin yanayin aiki na tsarin, kamar yashi, ƙura, zafi mai zafi, yawan zafin jiki, sinadarai da sauran yanayi mara kyau. A cikin yanayi mai tsanani, zai yi tasiri sosai ga ayyukan firikwensin, kamar binciken da aka toshe shi da ƙura, ƙura da ƙura, wanda zai shafi daidaiton ma'auni. A cikin yanayin zafi mai zafi, mai yuwuwa tururin ruwa ya shiga ciki na firikwensin ya haifar da lalacewa.
Zabi abakin karfe bincike gidaje, wanda yake da ƙarfi, babban zafin jiki da lalata, da ƙurar ƙura da ruwa don guje wa lalacewar ciki ga firikwensin. Kodayake harsashin binciken ba shi da ruwa, ba zai shafi saurin amsawar firikwensin ba, kuma iskar gas da saurin musayar yana da sauri, ta yadda za a cimma tasirin amsawa cikin sauri.
Ta hanyar tattaunawar da ke sama, mun san cewa akwai abubuwa da yawa na tsoma baki, amma waɗannan kawai taƙaitaccen bayani ne, musamman ga wani wuri, yana iya zama sakamakon abubuwan tsoma baki iri-iri. Amma wannan baya shafar bincikenmu akan fasahar hana jamming firikwensin analog.
Analog firikwensin fasahar anti-jamming galibi yana da masu zuwa:
6.Sheilding Technology
An yi kwantena da kayan ƙarfe. An nannade da'irar da ke buƙatar kariya a cikinsa, wanda zai iya hana kutsewar filin lantarki ko maganadisu yadda ya kamata. Ana kiran wannan hanyar garkuwa. Ana iya raba garkuwa zuwa garkuwar lantarki, garkuwar lantarki da ƙarancin garkuwar maganadisu.
(1) Shieding Electrostatic
Ɗauki jan ƙarfe ko aluminum da sauran ƙananan ƙarfe a matsayin kayan aiki, yi kwandon karfe mai rufaffiyar, kuma a haɗa tare da waya ta ƙasa, sanya darajar da'irar da za a kare a cikin R, don kada kutsewar wutar lantarki ta waje ta shafi kewayen ciki. kuma akasin haka, wutar lantarki da ke haifar da da'ira na cikin gida ba zai shafi kewayen waje ba. Wannan hanya ita ake kira electrostatic garkuwa.
(2) Garkuwar Lantarki
Don babban filin maganadisu na tsangwama, ana amfani da ka'idar eddy current don sanya babban filin katsalandan na lantarki yana haifar da eddy current a cikin ƙarfe mai kariya, wanda ke cinye kuzarin filin maganadisu, kuma filin magnetic na yanzu yana soke babban filin. filin maganadisu na mitar katsalandan, ta yadda za'a kiyaye da'irar daga tasirin babban mitar lantarki. Ana kiran wannan hanyar kariya ta electromagnetic garkuwa.
(3) Garkuwar Magnetic Karancin Juyi
Idan filin maganadisu mara ƙarfi ne, abin da ke faruwa a halin yanzu ba a bayyane yake ba a wannan lokacin, kuma tasirin tsangwama ba shi da kyau sosai kawai ta hanyar amfani da hanyar da ke sama. Don haka, dole ne a yi amfani da babban kayan aikin maganadisu azaman abin kariya, ta yadda za a iya iyakance layin shigar da maganadisu mara ƙarfi a cikin Layer garkuwar maganadisu tare da ƙaramin juriyar maganadisu. Ana kiyaye da'irar da aka kayyade daga tsangwama mai ƙarancin mitar maganadisu. Ana kiran wannan hanyar garkuwa da ƙarancin garkuwar maganadisu. Harsashin ƙarfe na kayan gano firikwensin yana aiki azaman garkuwar maganadisu mara ƙarfi. Idan aka ƙara ƙasa, yana kuma taka rawar kariya ta lantarki da garkuwar lantarki.
7.Grounding fasaha
Yana daya daga cikin ingantattun dabaru don murkushe tsangwama da kuma muhimmin garantin fasahar kariya. Gyaran ƙasa daidai zai iya murkushe tsangwama na waje yadda ya kamata, inganta amincin tsarin gwaji, da rage abubuwan tsangwama da tsarin ya haifar. Manufar saukar ƙasa abu biyu ne: aminci da tsoma baki. Sabili da haka, an raba ƙasa zuwa ƙasa mai kariya, kariya ta ƙasa da siginar sigina. Don dalilai na aminci, ya kamata a yi ƙasa a ƙasan murfi da chassis na na'urar auna firikwensin. An raba ƙasan siginar zuwa ƙasa siginar analog da ƙasan siginar dijital, siginar analog gabaɗaya yana da rauni, don haka buƙatun ƙasa sun fi girma; siginar dijital gabaɗaya mai ƙarfi ne, don haka buƙatun ƙasa na iya zama ƙasa. Yanayin gano firikwensin daban-daban suma suna da buƙatu daban-daban akan hanyar zuwa ƙasa, kuma dole ne a zaɓi hanyar ƙasa mai dacewa. Hanyoyin kafa ƙasa gama gari sun haɗa da ƙasa mai maki ɗaya da ƙasa mai ma'ana da yawa.
(1) Kasa mai maki daya
A cikin ƙananan mitar da'irori, ana ba da shawarar amfani da ƙasa mai maki ɗaya, wanda ke da layin ƙasa mai radial da layin ƙasan bas. Ƙarƙashin ƙasa na rediyo yana nufin cewa kowace da'irar aiki a cikin da'irar tana da alaƙa kai tsaye tare da sifili yuwuwar ma'anar tunani ta wayoyi. Ƙaddamar da Busbar yana nufin cewa ana amfani da ingantattun madugu tare da wani yanki na giciye a matsayin bas ɗin ƙasa, wanda ke da alaƙa kai tsaye zuwa wurin yuwuwar sifili. Ana iya haɗa ƙasa na kowane shingen aiki a cikin kewayawa zuwa bas ɗin da ke kusa. Na'urori masu auna firikwensin da na'urori masu aunawa sun zama cikakken tsarin ganowa, amma ƙila suna da nisa.
(2) Ƙirar ƙasa mai ma'ana da yawa
Gabaɗaya ana ba da shawarar da'irori masu ƙarfi don ɗaukar ƙasa mai ma'ana da yawa. High mita, ko da wani ɗan gajeren lokaci na ƙasa zai yi girma impedance ƙarfin lantarki drop, da kuma sakamakon rarraba capacitance, ba zai yiwu ba daya-aya earthing, saboda haka za a iya amfani da lebur irin grounding hanya, wato multipoint earthing hanya, ta yin amfani da mai kyau conductive zuwa sifili. yuwuwar ma'anar tunani akan jikin jirgin, babban da'irar da'irar don haɗawa da jirgin da ke kusa da shi akan jiki. Saboda babban mitar da ke cikin jikin jirgin yana da ƙanƙanta, ƙarfin iri ɗaya a kowane wuri yana da tabbacin gaske, kuma ana ƙara capacitor na kewaye don rage raguwar ƙarfin lantarki. Saboda haka, wannan halin da ake ciki ya kamata a yi amfani da Multi-point grounding yanayin.
8.Fasahar tacewa
Tace yana daya daga cikin ingantattun hanyoyin da za a murkushe tsangwamar yanayin serial AC. Da'irorin tacewa gama gari a cikin da'irar gano firikwensin sun haɗa da RC tace, matatar wutar AC da tace wutar lantarki na yanzu.
(1) RC tace: lokacin da siginar siginar ta kasance firikwensin tare da jinkirin canji na sigina irin su thermocouple da damuwa gage, madaidaicin RC tace tare da ƙananan ƙarar da ƙananan farashi zai sami sakamako mafi kyau na hanawa a kan tsangwama na yanayin. Ya kamata a lura, duk da haka, cewa masu tacewa na RC suna rage kutsewar yanayin jeri a ƙimar saurin amsawar tsarin.
(2) Fitar wutar lantarki ta AC: hanyar sadarwar wutar lantarki tana ɗaukar nau'ikan ƙarar ƙararrawa iri-iri, waɗanda galibi ana amfani da su don murƙushe hayaniyar da aka haɗe da matatar wutar lantarki ta LC.
(3) Tacewar wutar lantarki ta DC: Sau da yawa ana raba wutar lantarki ta da'irori da yawa. Domin gujewa tsangwama da da'irori da yawa ke haifarwa ta hanyar juriya na ciki na samar da wutar lantarki, yakamata a ƙara tacewa RC ko LC zuwa wutar lantarki ta DC na kowace da'ira don tace ƙaramar ƙaramar ƙararrawa.
9.Photoelectric hadawa fasaha
Babban fa'idar haɗin haɗin gwiwar photoelectric shine cewa zai iya hana haɓakar bugun jini yadda ya kamata da kowane irin tsangwama na amo, ta yadda siginar-zuwa-amo a cikin tsarin watsa siginar ya inganta sosai. Tsangwama amo, ko da yake akwai babban ƙarfin lantarki kewayon, amma makamashi ne sosai kananan, iya kawai samar da wani rauni halin yanzu, da kuma photoelectric ma'aurata shigar da wani ɓangare na haske emitting diode ne aiki a karkashin halin yanzu halin yanzu, janar jagorar lantarki halin yanzu na 10 ma ~ 15 ma, don haka ko da akwai babban tsangwama, tsangwama ba za ta iya samar da isasshen halin yanzu da danne ba.
Dubi a nan, na yi imani muna da wasu fahimtar abubuwan tsoma baki na analog firikwensin da hanyoyin hana tsangwama, lokacin amfani da firikwensin analog, idan abin da ya faru na tsoma baki, bisa ga abubuwan da ke sama ɗaya bayan ɗaya bincike, bisa ga ainihin halin da ake ciki. Ɗauki matakan, ba dole ba ne sarrafa makafi, don kauce wa lalacewa ga firikwensin.
Lokacin aikawa: Janairu-25-2021
