The capacitive kuthamanga kachipangizo wapangidwa awiri kusuntha zidutswa (zotanuka zitsulo diaphragm), zidutswa ziwiri zokhazikika (zitsulo ❖ kuyanika pa galasi concave pa chapamwamba ndi m'munsi zotanuka diaphragm), linanena bungwe terminals ndi nyumba, etc. Awiri mndandanda capacitors aumbike pakati kusuntha. mbale ndi mbale ziwiri zokhazikika.Kuthamanga kwa kudya kumagwira ntchito pa diaphragm zotanuka, diaphragm yotanuka imatulutsa kusuntha, komwe kumachepetsera mtunda ndi chidutswa chimodzi chokhazikika, ndikuwonjezera mtunda ndi chidutswa china chokhazikika (chikhoza kuwonetsedwa ndi pepala).Mtunda pakati pa maelekitirodi awiri azitsulo ndi chimodzi mwa zinthu zofunika kwambiri zomwe zimakhudza mphamvu, mtunda ukuwonjezeka, mphamvu imachepa, mtunda umachepa, mphamvu ikuwonjezeka.Mapangidwe amtunduwu amatchedwa masiyanidwe momwe magawo a zinthu ziwiri zomverera amasinthidwa ndi kuchuluka komweko koma mosiyana chifukwa cha kuchuluka kwake.
Ngati diaphragm yotanuka imayikidwa pakati pa kupanikizika kwa mbali ndi kupanikizika kwa mumlengalenga (mtsempha wapamwamba wa diaphragm yotanuka ndi mumlengalenga), kuthamanga kwake ndi tebulo;Ngati diaphragm yotanuka imayikidwa pakati pa kupanikizika kwa mbali ndi vacuum (mtsempha wapamwamba wa diaphragm yotanuka imadutsa mu vacuum), kuthamanga kwathunthu kumayesedwa.Kuchuluka kwa capacitor kumayenderana ndi dielectric ndi gawo lake logwira ntchito pakati pa mbale ziwiri za capacitor, komanso mosagwirizana ndi mtunda wapakati pa mbale ziwiri, ndiko kuti, C = ε A/ D, pomwe ε ndi dielectric yokhazikika. wa dielectric, A ndi wachibale ogwira m'dera pakati pa maelekitirodi awiri zitsulo, D ndi mtunda pakati pa maelekitirodi awiri zitsulo.Kuchokera paubwenzi uwu, zikhoza kuwoneka kuti pamene magawo awiri sasintha ndipo gawo lina likugwiritsidwa ntchito ngati kusintha, mphamvu idzasintha ndi kusintha kwa parameter.
Pali mitundu yambiri yoyezera ma circuits omwe amagwiritsidwa ntchito ndi capacitive pressure sensor.Tiyeni titenge gawo la mlatho ngati chitsanzo kuti tiwonetse mfundo yogwirira ntchito ya capacitance differential sensor kuyeza dera.Chifukwa capacitance ndi gawo la AC, mlathowo umakondwera ndi AC kudzera mu thiransifoma.Transformer awiri koyilo ndi capacitance wa mlatho, pamene palibe cholowera cholowera, mlatho muyeso, ndi awiri capacitance makhalidwe ndi ofanana ndi C0, pamene mphamvu zotsatira, mmodzi wa capacitance mtengo wa C0 + delta C, wina capacitance mtengo wa C0 - delta. , C (ma Delta C chifukwa cha kuthamanga kwakunja komwe kumachitika chifukwa cha kusinthasintha kwa capacitance), ndi mlatho womwe umasokonekera, pomwe mtengo wa capacitance uli wokwera, voteji imakhalanso yokwera, ndipo kusiyana kwamagetsi kumapangidwa pakati pa ma capacitor awiri, komwe mlatho umapanga voliyumu yotulutsa U yomwe imayimira kuthamanga kwa ma intake.
Nthawi yotumiza: Sep-02-2022