Umgaqo we-capacitive pressure sensor

I-sensor yoxinzelelo lwe-Capacitive luhlobo lwenzwa yoxinzelelo olusebenzisa i-capacitance njengento ebuthathaka ukuguqula uxinzelelo olulinganisiweyo kwi-capacitance value change.Olu hlobo lwenzwa yoxinzelelo ngokuqhelekileyo lusebenzisa ifilimu yentsimbi ejikelezayo okanye ifilimu efakwe ngegolide njenge-electrode ye-capacitor, xa ifilimu iva uxinzelelo kunye nokukhubazeka, i-capacitance eyenziwe phakathi kwefilimu kunye nokutshintsha kwe-electrode esisigxina, kunye nomqondiso wombane imveliso ngobudlelwane obuthile phakathi kombane ngokusebenzisa umlinganiselo wesekethe.
Inzwa yoxinzelelo lwe-Capacitive yeyomgama we-polar variation capacitive sensor, enokwahlulwa ibe yi-single capacitive sensor sensor kunye ne-different capacitive pressure sensor.
I-sensor ye-single-capacitive yoxinzelelo yenziwe yifilimu ejikelezayo kunye ne-electrode esisigxina.Ifilimu ibonakalisa phantsi kwesenzo soxinzelelo, ngaloo ndlela itshintsha amandla e-capacitor, kwaye uvakalelo lwayo luqikelelwa ngokulinganayo kwindawo kunye noxinzelelo lwefilimu kunye nokulinganisa ngokungafaniyo noxinzelelo lwefilimu kunye nomgama ukusuka kwifilimu ukuya kwi-electrode esisigxina. .Olunye uhlobo lwe-electrode esisigxina yimilo ye-concave spherical, kwaye i-diaphragm yinqwelomoya egxininisekileyo emiswe kwiperiphery.I-diaphragm inokwenziwa ngendlela yeplastiki yegolide yeplating.Olu hlobo lufanelekile ukulinganisa uxinzelelo oluphantsi kwaye lunomthamo ophezulu wokulayisha.I-sensor enye yoxinzelelo lwe-capacitive ingenziwa kwakhona nge-diaphragm kunye ne-piston ehambayo yepali ukulinganisa uxinzelelo oluphezulu.Olu hlobo lunciphisa indawo yoxinzelelo oluthe ngqo lwe-diaphragm ukwenzela ukuba i-diaphragm encinci ingasetyenziselwa ukuphucula uvakalelo.Ikwadityaniswe namacandelo ahlukeneyo embuyekezo kunye nokukhusela kunye neesekethe zokwandisa ukuphucula amandla okuthintela ukuphazamiseka.Le nzwa ifanelekile kumlinganiselo woxinzelelo oluphezulu kunye ne-telemetry yenqwelomoya.Izinzwa zoxinzelelo ezikwi-capacitive enye nazo ziyafumaneka ngohlobo lwe-microphone (okt uhlobo lwe-microphone) kunye nohlobo lwe-stethoscope.
I-electrode ye-diaphragm yoxinzelelo lwe-differential capacitive pressure sensor ifumaneka phakathi kwee-electrode ezimbini ezisisigxina ukwenza ii-capacitors ezimbini.Ngaphantsi kwesenzo soxinzelelo, amandla e-capacitor enye ayanda kwaye enye iyancipha ngokufanelekileyo, kwaye umphumo wokulinganisa uphuma ngomjikelezo ohlukeneyo.I-electrode yayo esisigxina yenziwe ngumaleko owenziwe ngegolide kwindawo yeglasi egobileyo.I-diaphragm ikhuselwe ekugqabhukeni ngummandla we-concave ngexesha lokulayisha ngaphezulu.I-differential capacitive sensors sensors pressure ine-sensitivity ephezulu kunye nomgca ongcono kune-single-capacitive sensor sensors, kodwa kunzima kakhulu ukuqhutyelwa (ingakumbi ukuqinisekisa ukulinganisa ukulinganisa), kwaye abanako ukuphumeza ukuhlukaniswa kwegesi okanye ulwelo oluza kulinganiswa, ngoko abafanelekanga. ukusebenza kulwelo olunomhlwa okanye ukungcola.