ALayisha iSeliluhlobo oluthile lwe-transducer okanye i-sensor eguqula amandla abe yimveliso yombane enokulinganiswa. Isixhobo sakho esiqhelekileyo se-load cell sinee-strain gauges ezine kwi-configuration ye-wheatstone bridge. Kwizinga le-industrial olu tshintsho luquka umthwalo oguqulwa ube yisignali yombane ye-analog
ULeonardo Da Vinci wasebenzisa iindawo zobunzima obulinganiswayo kwi-lever yoomatshini ukulinganisela nokuchonga ubunzima obungaziwayo. Utshintsho lweendlela zakhe zoyilo lwalusebenzisa ii-lever ezininzi, nganye inobude obahlukileyo kwaye ilinganiswe nobunzima obuqhelekileyo obunye. Ngaphambi kokuba ii-hydraulic kunye ne-electronic strain gauge load cells zithathe indawo yee-mechanical levers ukuze zisetyenziswe ekulinganiseni ubunzima kwimizi-mveliso, ezi zikali ze-mechanical lever zazisetyenziswa kakhulu. Zazisetyenziselwa ukulinganisa yonke into ukusuka kwiipilisi ukuya kwiimoto zikaloliwe kwaye zenze njalo ngokuchanekileyo nangokuthembekileyo ukuba zilinganiswe kwaye zigcinwe ngokufanelekileyo. Zazibandakanya ukusetyenziswa kwendlela yokulinganisa ubunzima okanye ukufunyanwa kwamandla aphuhliswe zii-mechanical levers. Ii-sensors zokuqala, zangaphambi koxinzelelo lwe-strain gage force zaziquka uyilo lwe-hydraulic kunye ne-pneumatic.
Ngo-1843, isazinzulu saseBritane uCharles Wheatstone saqulunqa isekethe yebhulorho enokulinganisa ukumelana nombane. Isekethe yebhulorho yaseWheatstone ifanelekile ukulinganisa utshintsho lokuxhathisa oluvela kwiigeyiji zoxinzelelo. Nangona igeyiji yokuqala yoxinzelelo lwentambo yokumelana nebhondi yaphuhliswa ngeminyaka yoo-1940, ubuchwepheshe obutsha abuzange bufikeleleke de kwafika izixhobo ze-elektroniki zanamhlanje apho ubuchwepheshe obutsha baba nokwenzeka ngobuchwephesha nangokwezoqoqosho. Ukususela ngelo xesha, nangona kunjalo, iigeyiji zoxinzelelo ziye zanda zombini njengezixhobo zesikali soomatshini nakwiiseli zomthwalo ezizimeleyo. Namhlanje, ngaphandle kweelabhoratri ezithile apho kusetyenziswa khona iibhalansi zoomatshini ezichanekileyo, iiseli zomthwalo we-strain gage zilawula ishishini lokulinganisa. Iiseli zomthwalo we-pneumatic ngamanye amaxesha zisetyenziswa apho ukhuseleko lwangaphakathi kunye nococeko lufunekayo, kwaye iiseli zomthwalo we-hydraulic ziqwalaselwa kwiindawo ezikude, njengoko zingadingi mbane. Iiseli zomthwalo we-Strain gage zibonelela ngokuchaneka ukusuka kwi-0.03% ukuya kwi-0.25% epheleleyo kwaye zifanelekile phantse kuzo zonke izicelo zoshishino.
Ingaba isebenza kanjani?
Uyilo lweeseli zomthwalo luhlelwa ngokwendlela oluveliswa ngayo uphawu lwemveliso (i-pneumatic, i-hydraulic, i-electric) okanye ngokwendlela olubona ngayo ubunzima (uxinzelelo, uxinzelelo, okanye ukucheba)iHydraulicIiseli zomthwalo zizixhobo zokulinganisela amandla, ezilinganisa ubunzima njengotshintsho kuxinzelelo lolwelo lokuzalisa lwangaphakathi.I-Pneumaticii-load cells nazo zisebenza ngokomgaqo wokulinganisela amandla. Ezi zixhobo zisebenzisa i-dampener ezininzi
amagumbi okubonelela ngokuchanekileyo okuphezulu kunesixhobo se-hydraulic.I-Strein-gageIiseli zomthwalo ziguqula umthwalo osebenza kuzo ube ziimpawu zombane. Iigeyiji ngokwazo zibotshelelwa kumqadi okanye kwilungu lesakhiwo eliguqukayo xa kusetyenziswa ubunzima.
Ixesha lokuthumela: Meyi-06-2021