Yadda ake zaɓar na'urar auna nauyi mai kai da yawa yadda ya kamata

Mawallafi: Smartweigh– Nauyin Kai Mai Yawa

Na'urar auna kai mai yawa na'urar canza wutar lantarki zuwa wutar lantarki ce wadda za ta iya canza ƙarfin zuwa siginar lantarki, kuma ita ce babban ɓangaren na'urar auna kai mai yawa. Akwai nau'ikan na'urori masu auna firikwensin da yawa waɗanda za su iya kammala canjin ƙarfi-lantarki, gabaɗaya gami da nau'in ƙarfin juriya, nau'in ƙarfin filin maganadisu da firikwensin capacitive. Muhimmancin nau'in ƙarfin filin maganadisu shine ma'aunin nazarin lantarki, firikwensin capacitor wani ɓangare ne na mai auna kai mai yawa, kuma injin nauyin juriya ana amfani da shi sosai a yawancin samfuran injin nauyi.

Na'urar auna juriya mai nauyin multihead mai sauƙin tsari ne, mai inganci sosai, kuma tana da amfani iri-iri, kuma ana iya amfani da ita a cikin yanayi mara kyau na halitta. Saboda haka, ana samun na'urar auna juriya mai nauyin multihead a cikin na'urar auna juriya mai nauyin multihead. Na'urar auna juriya mai nauyin multihead mai nauyin multihead galibi ta ƙunshi polyurethane elastomer, na'urar auna juriya mai nauyin juriya da kuma da'irar wutar lantarki mai biyan kuɗi.

Elastomer na Polyurethane wani ɓangare ne mai damuwa na na'urar auna nauyi mai yawa, wanda aka yi da ƙarfe mai inganci na carbon da kuma bayanan ƙarfe mai inganci na aluminum. An yi ma'aunin juriyar juriya da foil ɗin ƙarfe da aka zana a cikin nau'in bayanai na grid, kuma ana manne ma'aunin juriyar juriya guda huɗu zuwa ga elastomer na polyurethane ta hanyar tsarin gada. Idan akwai rashin ƙarfi, masu juriya guda huɗu na da'irar gada suna da ƙima iri ɗaya, da'irar gadar tana cikin daidaito, kuma fitarwa ba ta da sifili.

Idan aka canza ƙarfin polyurethane elastomer ta hanyar ƙarfi, ma'aunin juriyar ma'aunin ...

Misali, na'urar auna sarkar da ke tara kaya (muhimmin ma'aunin motar lantarki), nau'in hasken cantilever (ma'aunin ƙasa, ma'aunin rumbun ajiya, ma'aunin motar lantarki), nau'in ginshiƙi (ma'aunin motar lantarki, ma'aunin rumbun ajiya), nau'in mota (sikelin), nau'in s (ma'aunin rumbun ajiya) da sauransu. Ma'aunin auna kaya mai kan mutane da yawa yakan iya lissafa na'urori masu auna kaya a cikin siffofi daban-daban. Idan an zaɓi na'urar auna kaya yadda ya kamata, yana taimakawa wajen inganta halayen na'urar auna kaya mai kan mutane da yawa.

Akwai bayanai da yawa da kuma samfuran na'urorin auna juriya na nau'ikan ...

An raba matakin daidaito na na'urar auna kai mai yawa zuwa matakai huɗu: a, b, c, da d. Maki daban-daban suna da gefuna daban-daban na kuskure. An ƙayyade firikwensin aji A mafi girma.

Lambar bayan maki tana wakiltar ƙimar tabbatar da daidaiton metrology, girman bayanai, ingancin firikwensin ya fi kyau. Misali, C2 yana nufin matakin C, ƙimar tabbatar da daidaiton metrology 2000 C5 yana nufin matakin C, ƙimar tabbatar da daidaiton metrology 5000. Babu shakka C5 ya fi C2 girma.

Ma'aunin firikwensin da aka saba amfani da su sune C3 da C5, kuma waɗannan ma'aunin firikwensin guda biyu ana iya amfani da su don yin ma'aunin firikwensin da yawa tare da daidaiton matakin III. Kuskuren mai auna firikwensin da yawa galibi yana faruwa ne sakamakon kuskuren tsarin dissect, kuskuren jinkiri, kuskuren maimaitawa, sassauta damuwa, ƙarin kuskuren zafin sifili da ƙarin kuskuren zafin fitarwa da aka ƙididdige. Na'urorin firikwensin dijital da suka bayyana a cikin 'yan shekarun nan suna sanya da'irar samar da wutar lantarki ta juyawa A/D da da'irar samar da wutar lantarki ta CPU a cikin firikwensin. Fitar firikwensin ba siginar bayanai na ƙarfin lantarki na analog ba ce, amma siginar analog mai nauyin da aka warware ta hanyar mafita, wanda ke da fa'idodi masu zuwa: 1. Allon kayan aiki Ana iya tattara siginar bayanai na kowane firikwensin dijital daban-daban, ana ƙididdige su bisa ga daidaiton layi, kuma ana iya daidaita kowane firikwensin daban-daban, kuma yuwuwar daidaita kuskuren kusurwoyi huɗu a lokaci guda yana da yawa sosai.

Babban ciwon kai a cikin na'urorin aunawa masu yawa ta amfani da na'urori masu auna dijital da analog shine daidaitawar kusurwoyi huɗu, wanda yawanci yana buƙatar daidaitawa da yawa don ƙayyadewa, kowane lokaci yana motsa nauyi mai nauyi na yau da kullun, wanda ke ɗaukar lokaci da aiki mai yawa. 2. Saboda na'urar kayan aiki na iya gano siginar bayanai na duk na'urori masu auna firikwensin, ana iya ganin matsalolin duk na'urori masu auna firikwensin daga na'urar kayan aiki, wanda ya dace da kulawa. 3. Na'urar auna firikwensin dijital tana watsa siginar analog ta hanyar hanyar sadarwa ta 485, kuma watsawa tana da nisa mai nisa ba tare da ta shafi ba.

A kawar da matsaloli masu wahala da kuma masu saurin kamuwa da su na watsa siginar bugun jini. 4. Ana iya daidaita kurakurai daban-daban na na'urar auna firikwensin bisa ga microcontroller da ke cikin na'urar auna firikwensin dijital, ta yadda bayanan bayanan firikwensin fitarwa suka fi daidai. Ana kiran na'urar auna firikwensin mai yawan kai da tsarin jijiyoyi na tsakiya na na'urar auna firikwensin mai yawan kai, kuma halayensa galibi suna ƙayyade daidaito da amincin na'urar auna firikwensin mai yawan kai.

Lokacin ƙirƙirar na'urar auna nauyi mai yawa, sau da yawa ana fuskantar tambayar yadda ake amfani da na'urori masu auna nauyi. Na'urar auna nauyi mai yawa hakika na'ura ce da ke canza siginar bayanai mai inganci zuwa fitarwar siginar lantarki wanda za a iya aunawa daidai. Abu na farko da za a yi la'akari da shi lokacin amfani da na'urar auna nauyi shine takamaiman yanayin ofishin da na'urar auna nauyi take.

Wannan yana da matuƙar muhimmanci musamman ga amfani da na'urori masu auna zafin jiki yadda ya kamata, kuma yana da alaƙa da ko na'urar auna zafin jiki za ta iya aiki yadda ya kamata da sauran aminci da tsawon rai, har ma da aminci da aminci na duk na'urorin auna nauyi. Lalacewar da muhallin halitta ke yi wa na'urar auna zafin jiki yana da waɗannan fannoni: (1) Yanayin yanayi mai zafi yana sa na'urar auna zafin jiki ta narke kayan shafa, walda tabo, da canje-canje a cikin yanayin zafi na polyurethane elastomer. Na'urori masu auna zafin jiki da ke aiki a yanayin yanayi mai zafi galibi suna zaɓar na'urori masu auna zafin jiki da ba sa jure zafi, kuma dole ne su ƙara rufin zafi, sanyaya ruwa, sanyaya iska da sauran kayan aiki.

(2) Haɗarin hayaki da danshi ga kurakuran na'urori masu auna sigina na ɗan gajeren lokaci. A cikin yanayin halitta a nan, ya kamata a yi amfani da na'urar auna sigina mai hana iska shiga. Na'urori masu auna sigina daban-daban suna da hanyoyin rufewa daban-daban, kuma aikin rufewa ya bambanta sosai.

Hatimin gama gari ya haɗa da cika manne da kayan aikin injiniya don shafa zanen roba, walda na lantarki (injin walda na baka, da sauransu) don hatimin hatimi da kuma cika nitrogen don marufi na injin. Daga ainihin tasirin hatimi, hatimin walda na lantarki shine mafi kyau, kuma yawan cikawa da hatimi ba shi da kyau. Ga na'urar firikwensin da ke aiki a cikin yanayi mai tsabta da bushewa a cikin ɗakin, zaku iya zaɓar na'urar firikwensin da ke aiki a cikin yanayi mai tsabta da bushewa a cikin ɗakin, zaku iya zaɓar na'urar firikwensin da ke aiki a cikin yanayi mai zafi da hayaki, dole ne ku zaɓi hatimin zafi mai ɗaukar bugun bugun zuciya ko hatimin walda mai ɗaukar bugun bugun zuciya, hatimin marufi na nitrogen mai cike da injin firikwensin.

(3) A cikin yanayin halitta mai yawan tsatsa, kamar danshi, sanyi, acid da alkali, waɗanda ke haifar da lalacewa ga elastomer polyurethane, gazawar da'ira da sauran haɗari ga firikwensin, ya kamata a zaɓi layin waje don feshi na lantarki ko murfin farantin ƙarfe na bakin ƙarfe, wanda ke da kyakkyawan juriya ga tsatsa da kyakkyawan aikin hatimi. firikwensin. (4) Lalacewar filin maganadisu ga fitowar firikwensin siginar bayanai mai rikitarwa. A wannan yanayin, ana duba kadarar kariya ta firikwensin mafita sosai don ganin ko yana da kyakkyawan rigakafi na lantarki.

(5) Rashin ƙonewa, saurin ƙonewa, da fashewa ba wai kawai suna haifar da haɗari ga na'urori masu auna sigina ba, har ma suna kawo manyan barazana ga sauran kayan aikin injiniya da amincin rayuwa. Saboda haka, na'urori masu auna sigina da ke aiki a cikin yanayi na halitta mai iya ƙonewa, mai iya ƙonewa, da kuma mai fashewa suna bayyana halayen nau'in mai hana fashewa: dole ne a yi amfani da na'urori masu auna sigina masu hana fashewa a cikin yanayi na halitta mai iya ƙonewa, mai iya ƙonewa, da kuma mai fashewa. Murfin rufe wannan nau'in na'urar ba wai kawai ya kamata ya yi la'akari da matsewa ba, har ma ya yi la'akari da ƙarfin matsi na nau'in mai hana fashewa da kuma nau'in hanyar fitar da kebul mai hana danshi, ruwa da kuma mai hana fashewa.

Na biyu, zaɓin jimillar adadin na'urori masu auna firikwensin da kewayon aunawa: zaɓin jimillar adadin na'urori masu auna firikwensin ya dogara da babban manufar na'urar auna firikwensin mai yawan kai, matakin wuraren tallafawa jikin sikelin (adadin wuraren tallafi dole ne ya dogara ne akan wurin tsakiyar nauyi na yanayin jikin sikelin da ke haɗuwa da kuma ma'aunin wurin tsakiyar nauyi). Gabaɗaya, wasu abubuwan da ke cikin sikelin suna amfani da wasu na'urori masu auna firikwensin, amma ma'auni na musamman kamar sikelin ƙugiya na lantarki suna zaɓar firikwensin guda ɗaya kawai, kuma wasu ma'aunin haɗakar injiniyan lantarki ya kamata su yi amfani da adadin na'urori masu auna firikwensin a sarari bisa ga takamaiman yanayin. Za a iya kimanta zaɓin kewayon auna firikwensin bisa ga abubuwan kamar girman sikelin, adadin na'urori masu auna firikwensin, nauyin sikelin da kansa, da yuwuwar nauyin babban tayoyin da kaya.

Gabaɗaya dai, yayin da ma'aunin firikwensin ya kusanci nauyin kowane firikwensin, to, daidaiton aunawa ya fi girma. Duk da haka, a cikin takamaiman aikace-aikace, ban da kiran abubuwa, akwai kuma nauyin sikelin da kansa, nauyin taya, nauyin ƙafa da girgizar girgiza. Saboda haka, lokacin amfani da kewayon auna firikwensin, ya kamata a yi la'akari da abubuwa da yawa don tabbatar da aminci da tsawon rai na firikwensin.

An fayyace hanyar lissafi ta auna kewayon firikwensin bayan gwaje-gwaje da yawa bayan la'akari da abubuwa daban-daban da ke kawo cikas ga jikin sikelin. An ƙididdige dabarar kamar haka: C=K-0K-1K-2K-3(Wmax+W)/N. C- Matsakaicin kewayon firikwensin mutum ɗaya W- Nauyin sikelin da kansa Wmax- Ana kiransa mafi girman ƙimar nauyin abin N- Jimlar adadin fulcrums da aka zaɓa ta sikelin K-0- Ma'aunin inshorar kasuwanci, gabaɗaya 1.2~1.3 K-1- na matsakaicin ma'aunin girgiza K-2 ma'aunin nauyi na tsakiya ma'aunin ma'aunin ma'aunin iska K-3 ma'aunin matsin lamba na iska.

Misali, ga ma'aunin bene na lantarki mai ƙarfin t 30, matsakaicin nauyin shine t 30, nauyin ma'aunin da kansa shine t 1.9, an zaɓi na'urori masu auna firikwensin 4, kuma bisa ga takamaiman yanayin da ake ciki a lokacin, an zaɓi ma'aunin inshorar kasuwanci K-0 = 1.25, ma'aunin tasiri K-1 = 1.18, da kuma tsakiyar nauyi. Ma'aunin karkacewar maki K-2- = 1.03, ma'aunin matsin iska K-3 = 1.02 Magani: Dangane da hanyar lissafi na kewayon auna firikwensin: c=K-0K-1K-2K-3(Wmax + W)/N. c=1.25×1.18×1.03×1.02×(30+1.9)/4=12.36t. Saboda haka, kewayon auna firikwensin shine 15t (ikon ɗaukar firikwensin gabaɗaya shine 10T, 15T, 20t, 25t, 30t, 40t, 50t, da sauransu, sai dai idan an keɓance shi na musamman).

Dangane da ƙwarewar aiki, aikin injin nauyi gabaɗaya yana cikin kewayon aunawa na 30% ~ 70%, amma injin nauyi mai tasiri sosai a cikin dukkan tsarin aikace-aikacen, kamar ma'aunin waƙar tsauri, ma'aunin motar lantarki mai ƙarfi, sikelin farantin ƙarfe na bakin ƙarfe, da sauransu. Lokacin amfani da firikwensin, gabaɗaya faɗaɗa kewayon aunawarsa, don haka firikwensin yana aiki tsakanin 20% zuwa 30% na kewayon aunawarsa. Kuma, dole ne a yi la'akari da filayen aikace-aikacen na'urori masu auna iri-iri. Mabuɗin zaɓin nau'in firikwensin shine nau'in nauyi da saitin sararin samaniya na cikin gida, don tabbatar da daidaitaccen saitin, nauyin abin dogaro ne, a gefe guda kuma, dole ne a yi la'akari da shawarwarin masana'anta. Masana'antun gabaɗaya suna buƙatar filin aikace-aikacen firikwensin bisa ga juriyar firikwensin, sigogin aiki, hanyar shigarwa, siffar tsari, kayan polyurethane elastomer da sauran halaye. Na'urorin auna nauyi sun dace da tara ƙarfe da na'urori masu auna sarkar fitarwa kamar sikelin kayan aiki, ma'aunin bel na lantarki, da sikelin allo.

A ƙarshe, dole ne a zaɓi matakin daidaiton firikwensin. Matsayin daidaiton firikwensin ya haɗa da rashin daidaituwar firikwensin, sassauta damuwa, gyaran sassauta damuwa, jinkiri, maimaitawa, jin daɗi da sauran alamun aiki. Lokacin amfani da firikwensin, ba wai kawai ƙa'idodin daidaito na ƙirar lantarki ba ne, har ma da farashinsa.

Zaɓar matakan firikwensin dole ne ya yi la'akari da waɗannan sharuɗɗa guda biyu 1. Yi la'akari da tanadin shigarwar allon kayan aiki. Alamar aunawa tana nuna sakamakon auna bayanai bayan siginar bayanai na fitarwa na mai auna kai mai yawa ya zama mafi girma kuma an warware canjin A/D. Saboda haka, siginar bayanai na fitarwa na mai auna kai mai yawa dole ne ya fi girma fiye da girman yanayin shigarwar da aka ƙayyade ta allon kayan aiki. Ana shigar da ƙarfin fitarwa na mai auna kai mai yawa cikin dabarar daidaitawa tsakanin firikwensin da allon kayan aiki, kuma sakamakon lissafi dole ne ya fi ƙarfin shigarwar da aka ƙayyade ta allon kayan aiki.

Tsarin da ya dace da na'urar auna nauyi mai yawa da kuma allon kayan aiki: ƙarfin fitarwa na na'urar auna nauyi * ƙarfin wutar lantarki na ƙarfafawa * girman sikelin, matakin myopia na na'urar auna nauyi * adadin na'urori masu auna * kewayon auna na'urar. Misali, na'urar marufi mai adadi mai nauyin kilogiram 25 da sikelin mai girman myopia na kewayon aunawa 1000 tana zaɓar na'urori masu auna L-BE-25 guda 3 tare da kewayon aunawa na kilogiram 25 da ƙarfin amsawa na 2.0±0.008mV/V, zaɓi na'urar AD4325 don sikelin tare da matsi na aiki na lantarki na gadar dutse na 12V. Yana tambaya ko za a haɗa na'urar aunawa da aka zaɓa tare da dashboard.

Magani: Jin daɗin shigarwar allon kayan aiki na AD4325 shine 0.6μV/d, don haka bisa ga dabarar da ta dace tsakanin na'urar auna kai da allon kayan aiki, takamaiman siginar bayanai na shigarwar allon kayan aiki shine 2×12×25/1000×3×25=8μV/d>0.6μV/d. Saboda haka, na'urar auna kai da aka zaɓa zata iya la'akari da ƙa'idar jin daɗin shigarwar allon kayan aiki, wanda za'a iya haɗa shi da zaɓin allon kayan aiki. 2. Yi la'akari da ƙa'idodi kan daidaiton taken lantarki.

Wakiltar lantarki galibi ta ƙunshi sassa uku: sikelin, firikwensin da allon kayan aiki. Lokacin zabar daidaiton na'urar aunawa mai yawan kai, daidaiton na'urar aunawa mai yawan kai ya ɗan fi ƙimar da aka ƙididdige ta ka'idar asali. Ka'idar asali yawanci tana iyakance ta dalilai na zahiri, kamar sikelin. Ƙarfin matsi na sikelin ya ɗan yi ƙasa, halayen na'urar aunawa suna da kyau sosai, yanayin ofis na sikelin yana da tsauri da sauran dalilai.

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