Capacitive pressure sensor imhando yepressure sensor inoshandisa capacitance sechinhu chinonzwisa tsitsi kushandura kuyerwa kudzvanywa kuita capacitance kukosha shanduko.Iri rudzi rwekumanikidza sensor rinowanzo shandisa firimu resimbi rakatenderedza kana goridhe-yakaputirwa firimu se electrode ye capacitor, kana iyo firimu inonzwa kudzvanywa uye kukanganisa, iyo capacitance inoumbwa pakati pefirimu uye yakagadziriswa electrode shanduko, uye chiratidzo chemagetsi chinogona kubuda nehumwe hukama pakati pemagetsi kuburikidza nechiyero chekuyera.
Capacitive pressure sensor ndeye polar kureba variation capacitive sensor, iyo inogona kukamurwa kuita imwechete capacitive pressure sensor uye differential capacitive pressure sensor.
Iyo imwechete-capacitive pressure sensor inoumbwa nefirimu inotenderera uye yakagadziriswa electrode.Iyo firimu inokanganisa pasi pechiito chekumanikidza, nekudaro ichishandura kugona kwecapacitor, uye kunzwisiswa kwayo kunenge kuenzana nenzvimbo uye kudzvanywa kwefirimu uye nekupesana kunoenderana nekukakavadzana kwefirimu uye chinhambwe kubva mufirimu kuenda kune yakagadziriswa electrode. .Imwe mhando ye electrode yakagadziriswa ndeye concave spherical shape, uye diaphragm indege inomanikidzika yakamisikidzwa yakatenderedza periphery.Iyo diaphragm inogona kugadzirwa nenzira yepurasitiki yegoridhe plating.Rudzi urwu rwakakodzera kuyera low pressure uye ine high overload capacity.Imwe capacitive pressure sensor inogonawo kugadzirwa ye diaphragm ine piston inofambisa danda kuyera kukwira kwepamusoro.Rudzi urwu runodzikisira nzvimbo yekudzvanya yakananga ye diaphragm kuitira kuti diaphragm yakatetepa igone kushandiswa kuvandudza kunzwa.Inosanganiswawo neakasiyana-siyana muripo uye kudzivirira zvikamu uye amplification maseketi kuvandudza anti-kupindira kugona.Iyi sensor inokodzera dynamic high pressure kuyerwa uye telemetry yendege.Single-capacitive pressure sensors inowanikwawo mune maikorofoni mhando (kureva maikorofoni mhando) uye stethoscope mhando.
Iyo pressure diaphragm electrode ye differential capacitive pressure sensor iri pakati pemaelectrode maviri akaiswa kuti aumbe maviri capacitor.Pasi pechiito chekumanikidza, simba reimwe capacitor rinowedzera uye imwe inoderera zvichienderana, uye chiyero chekuyera chinobuda nedunhu rakasiyana.Electrode yayo yakagadzika inogadzirwa negoridhe-yakaputirwa layer pane concave curved girazi pamusoro.Iyo diaphragm inodzivirirwa kubva pakuputika neiyo concave pamusoro panguva yekuremerwa.Differential capacitive pressure sensors ine yakakwirira senitivity uye iri nani linearity pane imwe-capacitive pressure sensors, asi yakanyanya kuoma kugadzirisa (kunyanya kuona symmetry), uye haigone kuwana yega yega gasi kana mvura inoyerwa, saka haina kukodzera. yekushanda mumvura ine ngura kana tsvina.
Nguva yekutumira: Jun-19-2023