Piezoresistive pressure sensors imhando yepressure sensor inoshandisa piezoresistive effect kuyera pressure.Iyo piezoresistive mhedzisiro inoreva shanduko mukupokana kwemagetsi kwechinhu kana ichiiswa kune mechanical dhiri kana deformation.Mune piezoresistive pressure sensors, diaphragm kana membrane inowanzo shandiswa kushandura kumanikidza kunoshandiswa kuita mechanical deformation, iyo inozokonzera shanduko mukupikisa kwepiezoresistive elements.
Hukama huri pakati pekumanikidza uye kubuda kwepiezoresistive pressure sensor inopesvedzerwa nemagadzirirwo uye zvinhu zvemukati zve sensor.Heino mhedziso yehukama hwese:
1.Direct Proportional Relationship:
Muzhinji piezoresistive pressure sensors, pane hukama hwakananga uye hwakatsetseka pakati pekumanikidza kunoshandiswa uye shanduko yemagetsi kuramba.Sezvo kumanikidza kunowedzera, iyo diaphragm kana membrane ye sensor inopinda deformation, zvichiita kuti piezoresistive zvinhu zviwane kushushikana.Iyi dhizaini inotungamirira kune shanduko mukupikisa, uye shanduko iyi inoenderana nekumanikidzwa kunoshandiswa.Shanduko yekupikisa inogona kuyerwa uchishandisa Wheatstone bhiriji reketi kana dzimwe nzira dzekugadzirisa zviratidzo.
2.Wheatstone Bridge Configuration:
Piezoresistive pressure sensors inowanzo shandisa Wheatstone bridge circuit kuyera shanduko yekuramba nemazvo.Iyo bhiriji redunhu rine akawanda piezoresistive zvinhu, mamwe acho ari pasi pekumanikidzwa-induced strain, nepo mamwe asina.Iko kusiyanisa shanduko mukupikisa pakati pezvinhu zvakaomeswa uye zvisina kuvharwa zvinoshandiswa kugadzira mhepo inobuda inoenzana nekumanikidza kunoshandiswa.
3.Output Signal Conditioning:
Kubuda kwepiezoresistive pressure sensor inowanzoita analog voltage signal.Iyo voltage inobuda inoenderana nekuchinja kwekupokana uye, nekudaro, iyo inoshandiswa kumanikidza.Signal conditioning circuitry inogona kushandiswa kukwidziridza, kusefa, uye kuenzanisa iyo inobuda chiratidzo kuti uwane kwayo kudzvanywa kuverenga.
4.Calibration:
Nekuda kwekugadzira kushivirira uye kusiyanisa kwezvinhu zvinonzwa, piezoresistive pressure sensors inowanzoda calibration kuti ive nechokwadi chekuyeresa kudzvanywa.Calibration inosanganisira kuona hukama chaihwo pakati pe sensor inobuda voltage uye iyo chaiyo yekumanikidza iri kuiswa.Iyi calibration inogona kuwanikwa kuburikidza nekuyedzwa uye kuenzanisa zvichienderana nereferensi chiyero.
Muchidimbu, hukama pakati pekumanikidza uye kubuda kwepiezoresistive pressure sensor inowanzoita mutsara uye yakaenzana.Sezvo kumanikidza kunowedzera, kuramba kwe sensor kunoshanduka, zvichitungamira kune inowirirana shanduko mune inobuda voltage.Iyo Wheatstone bhiriji kumisikidzwa uye chiratidzo chemisikidzo inoita mabasa akakosha mukushandura shanduko yekupikisa kuita inoshandisika uye yakarurama kuyera kudzvanywa.
Nguva yekutumira: Sep-06-2023