ALayisha Iseliuhlobo oluthile lwe-transducer noma inzwa eguqula amandla abe umkhiqizo kagesi olinganisekayo. Idivayisi yakho evamile yeseli lomthwalo iqukethe ama-strain gauge amane ekucushweni kwebhuloho le-wheatstone. Esikalini sezimboni lokhu kuguqulwa kuqukethe umthwalo oguqulwa ube isignali kagesi ye-analog
ULeonardo Da Vinci wasebenzisa izikhundla zezinsimbi eziphikisanayo ezilinganisiwe ku-lever yomshini ukuze alinganise futhi anqume izisindo ezingaziwa. Ukuhlukahluka kwemiklamo yakhe kwakusebenzisa ama-lever amaningi, ngalinye linobude obuhlukile futhi lilinganiswe ngesisindo esisodwa esijwayelekile. Ngaphambi kokuba amaseli omthwalo we-hydraulic kanye ne-electronic gauge gauge athathe indawo yama-lever omshini ukuze kusetshenziswe isisindo sezimboni, lawa ma-lever omshini ayesetshenziswa kabanzi. Ayesetshenziswa ukukala yonke into kusukela kumaphilisi kuya ezimotweni zesitimela futhi akwenza lokho ngokunembile nangokuthembekile uma nje elinganiswe kahle futhi enakekelwa kahle. Ayehilela ukusetshenziswa kwendlela yokulinganisa isisindo noma ukutholakala kwamandla athuthukiswe ama-lever omshini. Izinzwa zokuqala zangaphambi kokucindezeleka zazihlanganisa imiklamo ye-hydraulic kanye ne-pneumatic.
Ngo-1843, isazi sesayensi yefiziksi saseBrithani uCharles Wheatstone sakha isekethe yebhuloho eyayingalinganisa ukumelana kukagesi. Isekethe yebhuloho le-Wheatstone ilungele ukulinganisa izinguquko zokumelana ezenzeka kuma-strain gage. Nakuba i-bonded resistance wire strain gage yokuqala yasungulwa ngawo-1940, ubuchwepheshe obusha baba yinto engenzeka ngobuchwepheshe nangokwezomnotho kwaze kwaba yilapho ubuchwepheshe besimanje bufika lapho ubuchwepheshe obusha baba khona ngokoqobo nangomnotho. Kusukela ngaleso sikhathi, nokho, ama-strain gage ayanda kokubili njengezingxenye zesikali somshini kanye namaseli omthwalo azimele. Namuhla, ngaphandle kwama-laboratories athile lapho kusasetshenziswa khona izilinganiso zomshini ezinembile, amaseli omthwalo we-strain gage abusa imboni yokulinganisa. Amaseli omthwalo we-pneumatic ngezinye izikhathi asetshenziswa lapho kudingeka khona ukuphepha kwangaphakathi kanye nokuhlanzeka, futhi amaseli omthwalo we-hydraulic acatshangelwa ezindaweni ezikude, njengoba engadingi ukunikezwa kwamandla. Amaseli omthwalo we-Strain gage anikeza ukunemba kusukela ngaphakathi kwesilinganiso esigcwele esingu-0.03% kuya ku-0.25% futhi afanele cishe kuzo zonke izinhlelo zokusebenza zezimboni.
Kusebenza kanjani?
Imiklamo yamaseli omthwalo ihlukaniswa ngohlobo lwesignali yokukhipha ekhiqizwayo (i-pneumatic, i-hydraulic, i-electric) noma ngokwendlela ababona ngayo isisindo (ukucindezela, ukucindezeleka, noma ukucheba)I-HydraulicAmaseli omthwalo ayimishini yokulinganisela amandla, elinganisa isisindo njengoshintsho ekucindezelweni koketshezi lokugcwalisa lwangaphakathi.I-Pneumaticamaseli okulayisha nawo asebenza ngesimiso sokulinganisela amandla. Lawa madivayisi asebenzisa i-dampener eminingi
amakamelo ukuze anikeze ukunemba okuphezulu kunedivayisi ye-hydraulic.Igeji yokucindezelekaAmaseli omthwalo aguqula umthwalo osebenza kuwo ube yizibonakaliso zikagesi. Amageyiji ngokwawo ahlanganiswa nogongolo noma ilungu lesakhiwo eliguqukayo lapho kusetshenziswa isisindo.
Isikhathi sokuthunyelwe: Meyi-06-2021