Menene kwayar lodi?
Sir Charles Wheatstone ya inganta kuma ya shahara da kewayen gadar Wheatstone (yanzu ana amfani da shi don auna ma'auni a saman tsarin tallafi) kuma Sir Charles Wheatstone ya inganta a 1843 sananne ne, amma ɓangarorin fina-finai na bakin ciki da aka ajiye a cikin wannan tsohon da'irar da aka gwada da kuma gwada aikace-aikacen ba a fahimta sosai ba. tukuna. Fina-finan baƙar fata ba sabon abu bane ga masana'antar. Ana amfani da wannan dabara a aikace-aikace da yawa, daga yin hadaddun microprocessors zuwa yin daidaitattun resistors don iri gage. Don nau'in gages, sikirin-fim nau'in gages wanda aka watsa kai tsaye a kan madaidaicin ma'auni zaɓi ne wanda ke kawar da yawancin matsalolin da ake fuskanta tare da "gages mai ɗaure" (wanda kuma aka sani da gages foil, gages na tsaye, da gages na siliki).
Menene ma'anar kariyar lodin nauyi?
An ƙera kowace tantanin kaya don jujjuya ƙarƙashin kaya a cikin hanyar sarrafawa. Injiniyoyin haɓaka wannan jujjuyawar don haɓaka haƙƙin firikwensin yayin da suke tabbatar da tsarin yana aiki a cikin yankinsa na “na roba”. Da zarar an cire kaya, tsarin karfe, wanda aka karkatar da shi tare da yanki na roba, ya koma matsayinsa na farko. Tsarin da ya wuce wannan yanki na roba ana kiransa "overloading". Na'urar firikwensin da aka yi ɗorewa yana jurewa "lalacewar filastik," wanda tsarin ya lalace har abada, baya komawa yanayinsa na farko. Da zarar an lalace ta hanyar filastik, firikwensin ba zai ƙara samar da fitowar linzamin kwamfuta daidai da nauyin da aka yi amfani da shi ba. A mafi yawan lokuta, lalacewa ne na dindindin kuma ba zai iya jurewa ba. “Kariya mai yawa” siffa ce ta ƙira wacce ta injina ke iyakance juriyar firikwensin firikwensin da ke ƙasa da ƙayyadaddun nauyi mai nauyi, ta haka yana kare firikwensin daga manyan abubuwan da ba zato ba tsammani ko masu ƙarfi waɗanda ba za su haifar da nakasar filastik ba.
Yadda za a ƙayyade daidaiton nauyin kaya?
Ana auna daidaiton firikwensin ta amfani da sigogin aiki daban-daban. Misali, idan aka ɗora na'urar firikwensin zuwa matsakaicin nauyinsa, sannan kuma aka cire lodin, ikon firikwensin na komawa zuwa fitowar sifili iri ɗaya a cikin duka biyun shine ma'auni na "hysteresis". Sauran sigogi sun haɗa da rashin daidaituwa, Maimaituwa, da Creep. Kowane ɗayan waɗannan sigogi na musamman ne kuma yana da nasa kuskuren kashi. Mun jera duk waɗannan sigogi a cikin takaddun bayanai. Don ƙarin cikakkun bayanai na fasaha na waɗannan ƙa'idodin daidaito, da fatan za a duba ƙamus ɗin mu.
Kuna da wasu zaɓuɓɓukan fitarwa don sel masu ɗaukar nauyi da na'urori masu auna matsa lamba banda mV?
Ee, ana samun allunan kwandishan siginar sigina tare da iko har zuwa 24 VDC kuma ana samun nau'ikan zaɓuɓɓukan fitarwa guda uku: 4 zuwa 20 mA, 0.5 zuwa 4.5 VDC ko dijital I2C. Kullum muna samar da allunan da aka siyar kuma an daidaita su zuwa max load firikwensin. Ana iya samar da mafita na al'ada don kowace ƙa'idar fitarwa.
Lokacin aikawa: Mayu-19-2023
