Yadda ake zabar ma'aunin ma'auni da yawa cikin hankali

Marubuci: Smartweigh-Multihead Weighter

Ma'aunin nauyi na multihead shine na'ura mai jujjuya wutar lantarki zuwa wutar lantarki wanda zai iya juyar da karfi zuwa siginar lantarki, kuma shine ainihin abin da ke cikin ma'aunin nauyi. Akwai nau'ikan na'urori masu auna firikwensin da yawa waɗanda zasu iya kammala canjin ƙarfi-lantarki, gabaɗaya gami da nau'in ƙarfin juriya, nau'in ƙarfin maganadisu da firikwensin capacitive. Muhimmancin nau'in ƙarfin maganadisu shine ma'aunin nazari na lantarki, firikwensin capacitor wani ɓangare ne na ma'aunin nauyi mai yawan kai, kuma ana amfani da na'ura mai nauyin ƙarfin juriya a yawancin samfuran injin nauyi.

Ma'aunin juriya na multihead yana da sauƙi a cikin tsari, tsayin daka sosai, kuma yana da fa'idar amfani, kuma ana iya amfani dashi a cikin yanayin yanayi mara kyau. Don haka, ana samun ma'aunin ma'aunin juriya na multihead a cikin ma'auni mai yawan kai. Juriya iri multihead awo ya ƙunshi yafi hada da polyurethane elastomer, juriya iri ma'auni da kuma ramuwa da'ira.

Polyurethane elastomer shine ɓangaren damuwa na ma'aunin ma'aunin multihead, wanda aka yi da ƙarfe mai inganci mai inganci da bayanan bayanan alloy na aluminum. Ma'aunin ma'aunin juriya an yi shi da foil ɗin kayan ƙarfe wanda aka zana cikin nau'in bayanan grid, kuma ma'aunin juriya guda huɗu suna manne da elastomer na polyurethane ta hanyar tsarin gada. A cikin yanayin rashin ƙarfi, masu tsayayyar 4 na da'irar gada suna da darajar iri ɗaya, da'irar gada tana cikin daidaitaccen yanayi, kuma abin da aka fitar ba shi da sifili.

Lokacin da polyurethane elastomer ya lalace da ƙarfi, ma'aunin juriya shima ya lalace. A yayin da ake yin amfani da elastomer na polyurethane duka da karfi da lankwasa, ana ƙaddamar da ma'auni na juriya guda biyu, an shimfiɗa waya na ƙarfe, kuma ƙimar juriya ta karu, sauran biyun kuma suna da karfi, kuma ƙimar juriya ta ragu. Ta wannan hanyar, da'irar ma'auni na gada ta asali ba ta da daidaituwa, kuma akwai bambanci mai aiki a bangarorin biyu na da'irar gadar. Bambancin ƙarfin lantarki na aiki yana da alaƙa da girman ƙarfin da ke kan elastomer na polyurethane. Bincika bambancin ƙarfin aiki don samun girman ƙarfin firikwensin, ƙarfin aiki na aiki Bayan an duba siginar bayanai kuma an ƙididdige siginar ta hanyar kayan aikin, don mafi kyawun amfani da saitunan ma'aunin ma'aunin multihead daban-daban, ma'aunin multihead ya ƙunshi nau'ikan daban-daban. Siffofin tsari, da sunan firikwensin kuma yawanci ana kiransa bisa ga ƙirar sa.

Misali, firikwensin sarkar tarawa (ma'auni mai mahimmanci na lantarki), nau'in katako na katako (ma'auni na ƙasa, ma'auni, ma'auni, ma'auni na lantarki), nau'in shafi (daidaicin motar lantarki, sikelin sikelin), nau'in mota (ma'auni), nau'in s (sito) Ma'auni) da sauransu. Matsakaicin ma'aunin ma'auni na manyan kan iya yawan jera firikwensin a cikin nau'ikan tsari da yawa. Idan an zaɓi firikwensin da kyau, yana taimakawa don haɓaka halayen ma'aunin ma'auni da yawa.

Akwai ƙayyadaddun bayanai da yawa da ƙira na juriya nau'in ma'aunin nauyi mai yawa, kama daga gram ɗari da yawa zuwa ton ɗari da yawa. Lokacin zabar kewayon ma'aunin ma'aunin kai, dole ne a fayyace shi gwargwadon girman ma'aunin da aka saba amfani da shi. Ka'idar babban yatsan yatsa shine kamar haka: jimlar nauyin firikwensin (mafi girman izinin da aka yarda da na'urori masu auna firikwensin x adadin na'urori masu auna firikwensin) = 1/2 ~ 2/3 na matsakaicin nauyin ma'auni mai yawa.

Matsayin daidaiton ma'aunin ma'auni ya kasu kashi huɗu: a, b, c, da d. Maki daban-daban suna da ɓarna daban-daban na kuskure. An kayyade firikwensin Class A max.

Lamba bayan darajojin yana wakiltar ƙimar tantancewar awo, mafi girman bayanai, mafi kyawun ingancin firikwensin. Misali, C2 yana nufin darajar C, ƙimar tabbatarwar metrological 2000 C5 tana nufin darajar C, ƙimar tabbatarwar metrological 5000. Babu shakka C5 ya fi C2 girma.

Makin firikwensin na yau da kullun sune C3 da C5, kuma ana iya amfani da waɗannan maki biyu na na'urori masu auna firikwensin don yin ma'auni masu yawa tare da daidaiton darajar III. Kuskuren ma'aunin ma'auni da yawa ana haifar da shi ne ta hanyar kuskuren tsarin mai hankali, kuskuren lag, kuskuren maimaitawa, shakatawar damuwa, ƙarin kuskuren zafin maki sifili da ƙarin kuskuren ƙimar ƙimar fitarwa. Na'urori masu auna firikwensin dijital da suka bayyana a cikin 'yan shekarun nan sun sanya da'irar wutar lantarki ta A/D da kuma da'irar samar da wutar lantarki ta CPU cikin firikwensin. Fitar da firikwensin ba shine siginar bayanan ƙarfin lantarki na analog na aiki ba, amma siginar siginar siginar siginar net ɗin da aka warware ta hanyar mafita, wanda ke da fa'idodi masu zuwa: 1. Na'urar kayan aiki Ana iya tattara siginar bayanan kowane firikwensin dijital daban, ƙididdigewa bisa ga bayanin. ma'auni na layi, kuma kowane firikwensin zai iya zama mai daidaitawa da kansa, kuma yiwuwar daidaita kuskuren kusurwoyi huɗu a lokaci ɗaya yana da girma sosai.

Babban ciwon kai a cikin ma'auni masu yawa ta hanyar amfani da na'urori masu auna sigina da na'urori masu auna sigina shine gyare-gyaren kuskuren kusurwa hudu, wanda yawanci yana buƙatar ƙididdiga masu yawa don ƙayyade, kowane lokaci yana motsa nauyin ma'auni mai nauyi, wanda yake cin lokaci da aiki. 2. Saboda kayan aiki na 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 sashin kayan aiki, wanda ya dace don kiyayewa. 3. Na'urar firikwensin dijital tana watsa siginar analog ta hanyar haɗin 485, kuma watsawa yana da nisa mai nisa ba tare da an shafa shi ba.

Ka rabu da matsaloli masu wuya da masu saurin kamuwa da siginar bugun jini. 4. Ana iya daidaita kurakurai daban-daban na firikwensin bisa ga microcontroller a cikin firikwensin dijital, ta yadda bayanan bayanan firikwensin fitarwa ya fi daidai. Ana kiran ma'aunin ma'auni mai mahimmanci na tsakiya na tsarin juyayi na multihead, kuma halayensa sun fi ƙayyade daidaito da amincin ma'aunin multihead.

Lokacin zayyana ma'aunin nauyi da yawa, tambayar yadda ake amfani da na'urori masu auna firikwensin sau da yawa ana fuskantar. Ma'aunin nauyi da yawa shine ainihin na'urar da ke canza siginar bayanai masu inganci zuwa siginar lantarki wanda za'a iya auna shi daidai. Abu na farko da za a yi la'akari da lokacin amfani da firikwensin shine takamaiman yanayin ofishin da ke cikin firikwensin.

Wannan yana da mahimmanci musamman ga yadda ake amfani da na'urori masu auna firikwensin, kuma yana da alaƙa da ko firikwensin zai iya yin aiki yadda ya kamata da sauran aminci da rayuwar sabis, har ma da aminci da aminci na duk injunan nauyi. Cutarwar da yanayin yanayi ya haifar ga firikwensin yana da abubuwa masu zuwa: (1) Yanayin yanayin zafi mai zafi yana haifar da firikwensin don narke kayan shafa, walda tabo, da canje-canjen tsari a cikin damuwa na thermal na polyurethane elastomer. Na'urori masu auna firikwensin da ke aiki a cikin yanayin yanayi mai tsananin zafin jiki sukan zaɓi na'urori masu juriya da zafi, kuma dole ne su ƙara rufin zafi, sanyaya ruwa, sanyaya iska da sauran kayan aiki.

(2) Hatsarin hayaki da zafi zuwa ga kurakuran na'urori masu auna firikwensin. A cikin yanayi na halitta a nan, yakamata a yi amfani da firikwensin da ba ya da iska. Na'urori masu auna firikwensin daban-daban suna da hanyoyin rufewa daban-daban, kuma aikin rufewa ya bambanta sosai.

Babban hatimi ya haɗa da cikawa da kayan aikin injiniya don shafa takarda na roba, walƙiya na lantarki (na'urar walda ta arc, da dai sauransu. walƙiya na katako na lantarki) don rufe hatimi da cikawar nitrogen don marufi. Daga ainihin tasirin hatimi, hatimin walda na lantarki shine mafi kyau, kuma adadin cikawa da rufewa ba shi da kyau. Don firikwensin da ke aiki a cikin yanayi mai tsabta da bushewa a cikin ɗakin, zaku iya zaɓar firikwensin tare da hatimin mannewa. Don firikwensin da ke aiki a cikin yanayi na yanayi mai zafi da hayaƙi, dole ne ku zaɓi bugun bugun bugun zafi mai ɗaukar zafi mai rufewa ko buɗaɗɗen walƙiya mai ɗaukar hoto, marufi nitrogen cike firikwensin.

(3) A cikin yanayi na halitta tare da babban lalata, irin su zafi, sanyi, acid da alkali, wanda ke haifar da lalacewa ga elastomer polyurethane, gazawar gajeren lokaci da sauran haɗari ga firikwensin, ya kamata a zaba Layer na waje don fesa electrostatic ko bakin karfe farantin murfin, wanda yana da kyau lalata juriya da kyau sealing yi. firikwensin (4) Cutar da filin maganadisu zuwa firikwensin fitar da siginar hargitsi. A wannan yanayin, kayan kariya na firikwensin maganin ana bincika sosai don ganin ko yana da ingantaccen rigakafi na lantarki.

(5) Flammability, flammability, da fashewa ba wai kawai suna haifar da haɗari ga na'urori masu auna firikwensin ba, har ma suna kawo babbar barazana ga sauran kayan aikin injiniya da amincin rayuwa. Saboda haka, na'urori masu auna firikwensin da ke aiki a cikin yanayin yanayi masu ƙonewa, masu ƙonewa, da fashewar abubuwa a fili suna ƙayyadad da halayen nau'in tabbatar da fashewa: dole ne a yi amfani da na'urori masu tabbatar da fashewa a cikin yanayi masu ƙonewa, masu ƙonewa, da fashewar yanayi. Rufin rufewa na irin wannan firikwensin ya kamata ba kawai la'akari da tsauri ba, amma kuma ya yi la'akari da cikakken ƙarfin matsawa na nau'in fashewar fashewa da kuma danshi, mai hana ruwa da fashewar nau'in tashar USB.

Abu na biyu, zaɓi na jimlar yawan na'urori masu auna firikwensin da kewayon ma'auni: zaɓin jimlar adadin na'urori masu auna firikwensin ya dogara da babban maƙasudin ma'aunin ma'aunin multihead, matakin matakan tallafi na ma'aunin jiki (yawan matakan tallafi dole ne. zama bisa ma'aunin ma'aunin nauyi na ma'auni mai ma'auni na ma'aunin nauyi da ma'auni na takamaiman wurin wurin nauyi). Gabaɗaya magana, wasu fulcrums na sikelin suna amfani da wasu na'urori masu auna firikwensin, amma ma'auni na musamman kamar ma'aunin ƙugiya na lantarki kawai zaɓi firikwensin guda ɗaya kawai, kuma wasu ma'aunin haɗaɗɗiyar injiniyoyin lantarki yakamata su yi amfani da adadin na'urori a sarari gwargwadon halin da ake ciki. Za'a iya ƙididdige zaɓi na kewayon ma'auni na firikwensin bisa ga dalilai kamar girman ma'auni, adadin na'urori masu auna firikwensin, nauyin ma'aunin kanta, da yuwuwar babban nauyi da kaya.

Gabaɗaya magana, mafi kusancin kewayon firikwensin shine nauyin kowane firikwensin, mafi girman daidaiton awo. Koyaya, a cikin takamaiman aikace-aikacen, ban da ana kiran abubuwa, akwai kuma nauyin ma'aunin kanta, nauyin tare, nauyin ƙafa da girgiza girgiza. Don haka, lokacin amfani da kewayon ma'aunin firikwensin, yakamata a yi la'akari da abubuwa da yawa don tabbatar da aminci da tsawon rayuwar firikwensin.

An fayyace hanyar lissafin ma'aunin ma'aunin firikwensin bayan gwaje-gwaje da yawa bayan yin la'akari da abubuwa daban-daban waɗanda ke yin haɗari ga jikin sikelin. Ana ƙididdige ma'anar kamar haka: C=K-0K-1K-2K-3(Wmax+W)/N. C- Ƙididdigar kewayon firikwensin mutum W- Nauyin ma'aunin kanta Wmax- Ana kiransa mafi girman ƙimar ma'aunin nauyi na abu N- Jimlar adadin fulcrums da aka zaɓa ta sikelin K-0- inshorar kasuwanci index, gabaɗaya 1.2 ~ 1.3 K-1- na tsaka-tsakin Shock index K-2-ma'auni na ma'aunin nauyi na ma'auni na K-3-matsi na iska.

Misali, don ma'aunin bene na lantarki na 30t, matsakaicin ma'aunin nauyi shine 30t, nauyin sikelin kanta shine 1.9t, ana zaɓar firikwensin 4, kuma bisa ga takamaiman halin da ake ciki a lokacin, ƙididdigar inshorar kasuwanci K-0 = 1.25 , tasirin tasirin K-1 = 1.18, kuma an zaɓi tsakiyar nauyi. Ma'anar karkatar da ma'ana K-2- = 1.03, ma'aunin iska K-3 = 1.02 Magani: Dangane da hanyar lissafi na kewayon ma'aunin 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, ma'auni na firikwensin shine 15t (ƙarar ɗaukar nauyin firikwensin gabaɗaya 10T, 15T, 20t, 25t, 30t, 40t, 50t, da sauransu, sai dai idan ya kasance na musamman na musamman).

Dangane da ƙwarewar aiki, aikin injin nauyi yana cikin kewayon ma'auni na 30% ~ 70%, amma injin mai nauyi tare da babban tasiri a cikin duk aiwatar da aikace-aikacen, kamar ma'aunin waƙa mai ƙarfi, ma'aunin motar lantarki mai ƙarfi, bakin karfe. Ma'aunin farantin karfe, da sauransu, Lokacin amfani da firikwensin, gabaɗaya yana faɗaɗa kewayon awonsa, ta yadda firikwensin yana aiki tsakanin 20% zuwa 30% na kewayon ma'aunin sa. Bugu da ƙari, dole ne a yi la'akari da filayen aikace-aikacen na'urori masu auna firikwensin iri-iri. Makullin zaɓi na nau'in firikwensin shine nau'in nauyin nauyi da saitin sararin samaniya, don tabbatar da daidaitaccen wuri, nauyin abin dogara, a gefe guda, dole ne a yi la'akari da shawarwarin masana'anta. Masu sana'anta gabaɗaya suna buƙatar filin aikace-aikacen firikwensin gwargwadon juriyar firikwensin, sigogin aiki, hanyar shigarwa, tsarin tsari, kayan elastomer na polyurethane da sauran halaye Na'urori masu auna firikwensin Beam sun dace da tara ƙarfe da sakin firikwensin sarƙoƙi kamar ma'aunin kayan, ma'aunin bel na lantarki, da nunawa. ma'auni.

A ƙarshe, dole ne a zaɓi matakin daidaito na firikwensin. Matsayin daidaito na firikwensin ya haɗa da rashin daidaituwa na firikwensin, shakatawa na damuwa, gyaran shakatawa na damuwa, lag, maimaitawa, hankali da sauran alamun aiki. Lokacin amfani da firikwensin, ba kawai ƙa'idodin daidaito na ƙirar lantarki ba, har ma dole ne a yi la'akari da farashin sa.

Zaɓin matakan firikwensin dole ne yayi la'akari da ma'auni guda biyu masu zuwa 1. Yi la'akari da tanadi na shigar da kayan aiki. Alamar aunawa tana nuna sakamakon auna bayanai bayan siginar bayanan fitarwa na ma'auni mai yawa ya zama girma kuma an warware canjin A/D. Sabili da haka, siginar bayanan fitarwa na ma'auni mai yawan kai dole ne ya fi girma fiye da girman yanayin shigar da kayan aikin da aka ƙayyade. Ana kawo ƙwarewar fitarwa na ma'aunin ma'auni mai yawa a cikin dabarar da ta dace tsakanin firikwensin da na'urar kayan aiki, kuma sakamakon lissafin dole ne ya fi ƙarfin shigar da kayan aikin da aka ƙayyade.

Dabarar madaidaicin ma'aunin ma'aunin multihead da panel ɗin kayan aiki: ƙwarewar fitarwa na mita nauyi * ƙarfin ƙarfin ƙarfin ƙarfafawa * girman ma'aunin, matakin myopia na mitar nauyi * adadin na'urori masu auna firikwensin * kewayon aunawa. na firikwensin. Misali, na'ura mai ƙididdigewa tare da nauyin 25kg da sikelin tare da babban myopia na jeri na aunawa 1000 zaɓi na'urori masu auna firikwensin 3 L-BE-25 tare da kewayon ma'auni na 25kg da hankali na 2.0±0.008mV / V, zaɓi AD4325 kayan aiki panel don ma'auni tare da dutse baka gada lantarki aiki matsa lamba na 12V. Yana tambaya idan zaɓaɓɓen firikwensin za a haɗa shi da dashboard.

Magani: Mahimmancin shigar da kayan aikin AD4325 shine 0.6μV / d, don haka bisa ga ma'auni tsakanin ma'aunin ma'auni da ma'auni na kayan aiki, takamaiman siginar bayanan shigarwa na kayan aikin shine 2.×12×25/1000×3×25=8μV/d>0.6 μV/d. Sabili da haka, ma'aunin ma'aunin da aka zaɓa na multihead zai iya yin la'akari da ka'idodin shigar da hankali na kayan aiki, wanda za'a iya haɗa shi tare da zaɓi na kayan aiki. 2. Yi la'akari da ƙa'idodi akan daidaiton lakabi na lantarki.

Wakilin lantarki ya ƙunshi sassa uku ne: sikeli, firikwensin firikwensin da kayan aiki. Lokacin zabar daidaiton ma'aunin ma'auni, daidaiton ma'aunin ma'aunin multihead ya ɗan fi girma fiye da ƙididdige ƙimar ka'idar asali. Ka'idar asali yawanci tana iyakance ne da dalilai na haƙiƙa, kamar ma'auni. Ƙarfin ma'auni na ma'auni yana da dan kadan maras kyau, halayen kayan aikin kayan aiki suna da kyau sosai, yanayin ofishin na ma'auni yana da matsananci da sauran dalilai.

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