ALayisha iSeliluhlobo oluthile lwe-transducer okanye isivamvo esiguqula amandla abe sisiphumo sombane esimetwayo. Isixhobo sakho seseli yomthwalo esiqhelekileyo siquka iigeyiji zohlobo ezine kulungiselelo lwebhulorho yewheatstone. Kwinqanaba loshishino olu kuguqulwa luquka umthwalo oguqulwa ube ngumqondiso wombane we-analog
ULeonardo Da Vinci usebenzise izikhundla zobunzima obulinganisiweyo kwi-lever engumatshini ukulinganisa kunye nokumisela ubunzima obungaziwa. Ukwahluka koyilo lwakhe kusetyenziswa iileveli ezininzi, nganye yobude obuhlukeneyo kunye nokulinganisela kunye nobunzima obuqhelekileyo obuqhelekileyo. Phambi kokuba i-hydraulic kunye ne-electronic strain gauge load cell cell ithathe indawo yeeleva zoomatshini kwizicelo zokulinganisa ubungakanani bemizi-mveliso, ezi zikali zomatshini bezisetyenziswa ngokubanzi. Zazisetyenziselwa ukulinganisa yonke into ukusuka kwiipilisi ukuya kwiimoto zikaloliwe kwaye zenjenjalo ngokuchanekileyo nangokuthembeka ukuba zilinganiswe ngokufanelekileyo kwaye zigcinwe. Baye babandakanya ukusetyenziswa kwendlela yokulinganisa ubunzima okanye ukufumanisa amandla aphuhliswe ngama-levers mechanical. Eyokuqala, i-pre-strain gage force sensors ibandakanya i-hydraulic kunye noyilo lwe-pneumatic.
Ngowe-1843, ingcali yefiziksi yaseBritani uCharles Wheatstone wayila isiphaluka sebhulorho esinokulinganisa ukuxhathisa kombane. Isekethe yebhulorho yeWheatstone ilungele ukulinganisa utshintsho oluxhathisayo lwenzeka kwiigeji zoxinzelelo. Nangona i-gage yokuqala yokuxhathisa i-wire strain gage yaphuhliswa ngeminyaka yoo-1940, akuzange kube kude kwabanjwa i-electronics yale mihla ukuba iteknoloji entsha yakwazi ukusebenza ngobuchule nangoqoqosho. Ukusukela ngelo xesha, nangona kunjalo, iigeji zoxinzelelo ziye zanda zombini njengamacandelo okulinganisa oomatshini kunye neeseli zomthwalo ezimele zodwa. Namhlanje, ngaphandle kweelabhoratri ezithile apho ibhalansi yomatshini echanekileyo isasetyenziswa, uxinzelelo lweeseli zomthwalo wegeji zilawula ishishini lokulinganisa. Iiseli zomthwalo we-pneumatic ngamanye amaxesha zisetyenziselwa apho ukhuseleko lwangaphakathi kunye nococeko lufunwa, kwaye iiseli zomthwalo we-hydraulic ziqwalaselwa kwiindawo ezikude, njengoko zingadingi ukunikezelwa kwamandla. Iiseli ze-Strain gage load zinika ukuchaneka ukusuka ngaphakathi kwe-0.03% ukuya kwi-0.25% isikali esipheleleyo kwaye zilungele phantse zonke izicelo zemizi-mveliso.
Ingaba isebenza kanjani?
Uyilo lweeseli zomthwalo luhlelwa ngokohlobo lwesiginali yemveliso eyenziweyo (i-pneumatic, hydraulic, electric) okanye ngokwendlela ababona ngayo ubunzima (uxinzelelo, uxinzelelo, okanye ukucheba)I-Hydrauliciiseli zomthwalo zixhobo zokulinganisa amandla, ukulinganisa ubunzima njengotshintsho kwixinzelelo lokuzaliswa kwamanzi angaphakathi.Umoyaiiseli zomthwalo nazo zisebenza kumgaqo-siseko wokunyanzeliswa. Ezi zixhobo zisebenzisa i-dampener ezininzi
amagumbi ukunika ukuchaneka okuphezulu kunesixhobo soxinzelelo lwe-hydraulic.Uxinzelelo-gageiiseli zomthwalo ziguqula umthwalo osebenza kuzo zibe ziimpawu zombane. Iigeyiji ngokwazo zibotshelelwe kumqadi okanye kwilungu lesakhiwo elikhubaza xa kusetyenziswa ubunzima.
Ixesha lokuposa: May-06-2021