Umgomo we-capacitive pressure sensor

I-Capacitive pressure sensor iwuhlobo lwenzwa yokucindezela esebenzisa amandla njenge-elementi ebucayi ukuguqula ingcindezi elinganisiwe ibe ukuguqulwa kwevelu ye-capacitance.Lolu hlobo lwenzwa yokucindezela ngokuvamile lusebenzisa ifilimu yensimbi eyindilinga noma ifilimu efakwe ngegolide njenge-electrode ye-capacitor, lapho ifilimu izwa ingcindezi nokonakala, amandla akheke phakathi kwefilimu noshintsho lwe-electrode engaguquki, futhi isignali kagesi ingaba namandla. okukhiphayo ngobudlelwano obuthile phakathi kwe-voltage ngokusebenzisa isifunda sokulinganisa.
I-Capacitive pressure sensor ingeyenzwa ye-polar distance variation capacitive, engahlukaniswa ibe inzwa eyodwa ye-capacitive pressure kanye ne-difaultial capacitive pressure sensor.
I-single-capacitive pressure sensor yenziwe ngefilimu eyindilinga kanye ne-electrode engaguquki.Ifilimu imosha ngaphansi kwesenzo sokucindezela, ngaleyo ndlela ishintsha amandla e-capacitor, futhi ukuzwela kwayo kucishe kulingane nendawo nokucindezela kwefilimu futhi ilinganise ngokuphambene nokushuba kwefilimu kanye nebanga ukusuka efilimini ukuya ku-electrode engaguquki. .Olunye uhlobo lwe-electrode engaguquki luyi-concave spherical shape, futhi i-diaphragm iyindiza ecindezelayo egxiliswe endaweni ezungezile.I-diaphragm ingenziwa ngendlela ye-plastic gold plating.Lolu hlobo lufanele ukukala umfutho ophansi futhi lunamandla okulayisha ngokweqile.Inzwa eyodwa ye-capacitive pressure ingenziwa futhi nge-diaphragm ene-piston enyakazayo pole ukukala ingcindezi ephezulu.Lolu hlobo lunciphisa indawo yokucindezela eqondile ye-diaphragm ukuze kusetshenziswe i-diaphragm encane ukuze kuthuthukiswe ukuzwela.Iphinde ihlanganiswe nezigaba ezihlukahlukene zesinxephezelo nokuvikela kanye namasekhethi okukhulisa ukukhulisa amandla ukuze kuthuthukiswe amandla okulwa nokuphazamiseka.Le nzwa ifanele ukukala kwengcindezi ephezulu kanye ne-telemetry yendiza.Izinzwa zomfutho we-single-capacitive nazo ziyatholakala ngohlobo lwemakrofoni (okungukuthi uhlobo lombhobho) nohlobo lwe-stethoscope.
I-electrode ye-pressure diaphragm yenzwa yokucindezela kwe-capacitive ehlukile itholakala phakathi kwama-electrode amabili agxilile ukuze akhe ama-capacitor amabili.Ngaphansi kwesenzo sokucindezela, amandla e-capacitor eyodwa ayanda futhi enye iyancipha ngokufanele, futhi umphumela wokulinganisa uphuma ngomjikelezo ohlukile.I-electrode yayo engaguquki yenziwe ngongqimba olufakwe ngegolide endaweni yengilazi egobile egobile.I-diaphragm ivikelwe ekugqabukeni indawo eyi-concave ngesikhathi sokulayisha ngokweqile.Izinzwa zengcindezi ye-capacitive ezihlukile zinokuzwela okuphezulu kanye nomugqa ongcono kunezinzwa zokucindezela ezine-capacitive eyodwa, kodwa zinzima kakhulu ukucutshungulwa (ikakhulukazi ukuqinisekisa ukulinganisa), futhi azikwazi ukuzuza ukuhlukaniswa kwegesi noma uketshezi oluzolinganiswa, ngakho-ke azifaneleki. ukusebenza oketshezini olubolayo noma olungcolile.