Cov qhov hloov pauv Capacitive tuaj yeem siv rau kev sib cuag lossis tsis sib cuag ntawm yuav luag txhua yam khoom. Nrog LANBAO lub capacitive proximity sensor, cov neeg siv tuaj yeem kho qhov rhiab heev thiab txawm tias nkag mus rau hauv cov thawv uas tsis yog hlau lossis cov thawv kom ntes cov kua dej lossis cov khoom khov sab hauv.
01 Kev Txheeb Xyuas Txog Kev Siv Tshuab
Ib lub capacitor uas muaj ob lub phaj tsim ib lub zog hluav taws xob ntawm cov phaj thaum nws raug fais fab. Txhua yam khoom siv uas nkag mus rau hauv lub zog no hloov pauv lub peev xwm ntawm cov phaj.
Ib lub capacitor kuj tseem muaj ib lub phaj. Hauv qhov no, lub "phaj" thib ob yog xov hlau hauv av.
Txhua lub capacitive sensors muaj cov khoom siv yooj yim zoo ib yam.
1. Cov Khoom Siv - Ntau yam duab, qhov loj me thiab cov ntaub ntawv tsim kho
2. Lub ntsiab lus sensor yooj yim - txawv raws li cov thev naus laus zis siv
3. Lub voj voog hluav taws xob - ntsuas cov khoom uas cov sensors ntes tau
4. Kev sib txuas hluav taws xob - Muab lub zog thiab cov teeb liab tso zis
Hauv cov ntaub ntawv ntawm cov sensors capacitive, lub hauv paus sensing element yog ib lub board capacitor thiab lwm lub phaj txuas yog grounded. Thaum lub hom phiaj txav mus rau thaj chaw sensor detection, tus nqi capacitance hloov pauv thiab cov zis sensor hloov.
1. lub capacitor
2. kev sib txuas
3. Qhov chaw induction
02 Cov yam tseem ceeb uas cuam tshuam rau qhov kev ncua deb ntawm lub sensor
Qhov deb uas raug tsim yog hais txog qhov deb ntawm lub cev uas ua rau lub qhov hluav taws xob hloov pauv thaum lub hom phiaj mus txog qhov chaw ntawm lub sensor hauv qhov kev taw qhia axial.
Peb cov khoom daim ntawv teev cov parameter teev peb qhov deb sib txawv:
Kev Ntsuas Ntau Yamhais txog qhov deb nominal uas tau txhais hauv cov txheej txheem kev txhim kho, uas yog raws li lub hom phiaj ntawm tus qauv loj thiab cov khoom siv.
Qhov Kev Ntsuas Tseebsuav nrog qhov sib txawv ntawm cov khoom ntawm qhov kub thiab txias hauv chav. Qhov teeb meem phem tshaj plaws yog 90% ntawm qhov ntsuas ntsuas nominal.
Qhov Kev Nrug Deb Ua Haujlwm Tiag Tiagxav txog qhov hloov pauv ntawm qhov chaw uas tshwm sim los ntawm cov av noo, qhov kub thiab txias nce thiab lwm yam, thiab qhov teeb meem phem tshaj plaws yog 90% ntawm qhov deb tiag tiag. Yog tias qhov deb inductive tseem ceeb, qhov no yog qhov deb siv.
Hauv kev xyaum ua, cov khoom tsis tshua muaj qhov loj thiab cov duab zoo li qub. Qhov cuam tshuam ntawm qhov loj ntawm lub hom phiaj yog qhia hauv qab no:
Txawm tias qhov sib txawv ntawm qhov loj me me xwb los, qhov sib txawv ntawm cov duab kuj tsis tshua muaj ntau npaum li qhov sib txawv ntawm qhov loj me. Daim duab hauv qab no qhia txog qhov cuam tshuam ntawm cov duab ntawm lub hom phiaj.
Nws yeej nyuaj rau muab qhov kho kom raug raws li cov duab, yog li kev sim yog qhov xav tau hauv cov ntawv thov uas qhov deb ntawm inductive yog qhov tseem ceeb.
Thaum kawg, qhov tseem ceeb tshaj plaws uas cuam tshuam rau qhov deb uas raug tsim yog qhov dielectric constant ntawm lub hom phiaj. Rau cov sensors capacitive level sensors, qhov dielectric constant siab dua, qhov yooj yim dua rau cov khoom siv los ntes. Raws li txoj cai dav dav, yog tias qhov dielectric constant loj dua 2, cov khoom siv yuav tsum ntes tau. Cov hauv qab no yog cov dielectric constants ntawm qee cov khoom siv rau kev siv xwb.
03 Capacitive sensor rau kev kuaj pom theem
Yuav kom siv tau cov capacitive sensors rau kev ntes theem kom zoo, xyuas kom meej tias:
Cov phab ntsa ntawm lub nkoj yog cov uas tsis yog hlau
Lub phab ntsa ntawm lub thawv tsawg dua ¼" -½"
Tsis muaj hlau nyob ze ntawm lub sensor
Qhov chaw induction tau muab tso ncaj qha rau ntawm phab ntsa ntawm lub thawv
Kev sib txuas lus hauv av ntawm lub sensor thiab lub thawv
Lub sijhawm tshaj tawm: Lub Ob Hlis-14-2023