Chii chinonzi capacitive sensor?

Senge mamwe marudzi e sensors (semuenzaniso, inductive sensors), capacitive sensors anoshanda asina kubatana panyama nechinhu chiri kuongororwa. Mune mamwe mazwi, idzi mhando dzemasaenzi idzo dzisiri dzekubatana. Nekubatsira kwavo, zvese zvemagetsi zvinoitisa uye zvisina-kuitisa zvinhu zvinogona kuonekwa. Nekuda kweichi chivakwa, capacitive sensors inogona kushandiswa munzvimbo dzisingatomboiti, semuenzaniso, inductive sensors.

Chii chinonzi capacitive sensor, chimiro uye mashandiro emamiriro

Iyi mhando ye sensor haina kunyanyo kuomarara sechigadzirwa uye kazhinji inosanganisira:

Enclosures

Muviri unoita kuti zvikwanise kuunganidza zvese zvinhu kuita chinhu chimwe chete. Uye zvakare, inopa inovimbika dziviriro yezvinhu kubva kune zvekunze zvinhu zvinogona kukanganisa kushanda kwayo. Muviri weiyo capacitive sensor inowanzo gadzirwa nendarira kana polyamide.

Chinobatanidza

Iyo yakasarudzika resin inodzivirira iyo sensheni zvinhu kubva kuhunyoro kana zvimwe zvinokuvadza zvinhu

Trigger

Iyo inokonzeresa inogadzira inodiwa switching chiratidzo chesimba uye huwandu hweiyo hysteresis (uyu ndiwo musiyano uri kure usati wabatidza).

Ma LED

Ma LED anopa nekukurumidza kumisikidza uye anoratidza switch chinzvimbo.

Gudzazwi

Inosimudzira chiratidzo chekuburitsa kune kukosha kwaunoda.

Demodulator

Iyo demodulator inoshandura yakakwira frequency oscillations kudzamara magetsi achinja.

Jenareta

Iyo inogadzira munda wemagetsi unoshanda pachinhu.

Electrodes

Iyo yekushandira pamusoro peiyo capacitive sensor inowanzo kuve maelektrode maviri anoita seacapacitor mahwendefa ayo akabatana nejenareta remhinduro wedunhu. Iyo, zvakare, yakagadzirirwa kuti ishandure simba rayo painenge ichisvika pachinhu chinodzorwa.

Nekuda kwekudengenyeka uku, sensor painosvika pachinhu, jenareta inogadzira kukura kuri kuwedzera, uko kunogadzirwa nekugadzira chiratidzo chekuburitsa.

Inobata magetsi inofambiswa nezvinhu zvemagetsi zvinoita uye dielectric. Sezvinoitika zvinhu zvinoitisa, iyo nhanho yekunzwa inova yakakura kwazvo kupfuura apo zvinhu zvekuyedza zviri dielectric (iyo yekuita nhanho inoenderana neyakagara dielectric).

Shandisa
Iko kushandiswa kwema sensors erudzi urwu kwakanyanya kwazvo uye kwakasiyana. Ivo anoshandiswa zvakanyanya mumaindasitiri maitiro ekudzora masisitimu mune angangoita ese maindasitiri.

Ivo anoshandiswa mune mota yekupaka maseru uye kudzora kuzadza kwematangi ane mvura, hombe uye gasious zvinhu, zvekuchinja pamatanho otomatiki, emachina nzvimbo, michina, ma conveyor, maalarm masisitimu nevamwe.

Mhando dze capacitive sensors nemaapplication avo

Proximity sensors

Parizvino, imwe yeanonyanyo shandiswa capacitive sensors ari proximity sensors, ayo, mukuwedzera pakuve akatendeseka zvakanyanya, ane akasiyana siyana akasiyana mabhenefiti.

Maseru erudzi urwu anoshandiswa munenge munzvimbo dzese sezvo iwo akatemerwa zvine mutengo. Ivo anoshandiswa kuongorora iyo yekuzadza nhanho yemidziyo dzakasiyana siyana, control voltage, kuratidza kana paine matambudziko pamitsara yekugadzira uye nevamwe.

Inogonesa encoders yekufamba kweangular uye mutsara

Maseru erudzi urwu anoshandiswa mumaindasitiri akadai seinjiniya yemagetsi, simba, zvifambiso, kuvaka uye nezvimwe.

Inclinometers

MaCapacitive inclinometers anoshandiswa pamapuratifomu emafuta mumatanho ekumisikidza, kuona kushomeka kwezvitsigiso, kuongorora uye kudzora kutsvedza kwemigwagwa uye njanji panguva yekuvakwa kwavo, kuona mhando dzemota, ngarava, maelevhuru, michina yekusimudza, michina yekurima kuona iyo angular kutamiswa kwezvinhu zvinotenderera, zvakadai semiseve, magiya uye mashandiro, ese akamira uye anotakurika.

Inobata maseru maseru

Sensors zverudzi urwu zvinoshandiswa mukutarisa masystem, kudzora uye kudzora kwemaitiro mune chikafu, chemishonga, chemakemikari uye peturu mafuta maindasitiri.

Ivo vanoshanda zvakanyanya mukubata zvinwiwa, zvinhu zvakawandisa, zvinoitisa uye zvisingaitisi zvinhu zvine mutsindo, uye munzvimbo dzakashinga dzekushanda mumakamuri kana munzvimbo panoungana guruva kana kukwirisa.

Inogadzirisa maseru anoshandiswa zvakanyanya mumaindasitiri anoda kuyerwa kwakaringana kwekumanikidza kuzere, hukobvu hwe dielectric zvinhu, hunyoro, hwakaenzana uye hwakakombama deformations, nezvimwe.

Kupatsanura kwema capacitive sensors maererano nenzira yekushandisa kwavo

Mhando dzese dzemagetsi dzinogona kukamurwa kuita mapoka maviri: ma sensors ane rimwe uye maviri matangi. Idzi dzekupedzisira dzakapatsanurwa kuita musiyano uye semi-musiyano.

Imwe-capacitance sensors ine yakapusa dhizaini uye inoshanduka capacitors. Rudzi urwu rwe sensor rwakakanganisa zvakati wandei, izvo zvinosanganisira zvakakura zvinokanganisa zvakatipoteredza senge hunyoro uye kupisa.

Iko kusagadzikana kwema sensors ane musiyano dhizaini ndeyekuti ivo vanosiyana nema sensors ane imwechete capacitance, uye kusiyanisa iwo ane angangoita matatu ekubatanidza waya pakati pechiridzwa neiyo yekuyeresa chishandiso kuti iwedzere zvakashata mhedzisiro yehunyoro uye tembiricha.

Nekudaro, nekuda kweiyi diki dhivhosi, masiyano maseru anowedzera zvakanyanya kurongeka kwavo uye kugadzikana uye nokudaro vanowedzera nzvimbo yavo yekushandisa.

Zvayakanakira capacitive sensors
Inofananidzwa nemakwikwi emagetsi, inductive uye piezoelectric sensors, capacitive sensors ane zvakawanda zvakanaka, kusanganisira:

• kusununguka kwekugadzirwa - zvinhu zvakachipa zvinoshandiswa pakugadzira capacitive sensors, izvo zvinokanganisa mutengo wekupedzisira wechigadzirwa;
• diki saizi uye huremu;
• kushandiswa kwesimba kwakaderera;
• kukwirira kwekunzwisisa;
• vasina kutaurirana (havafanirwe kunge vari padyo nechinhu chekudzidza;
• hupenyu hwakareba hwebasa;

Kugadziriswa kuri nyore kweiyo dhizaini dhizaini yemabasa akasiyana uye zviyero.

kutadza
Zvimwe zvekukanganisa kukuru kwema capacitive sensors ndeaya:

• chiyero chidiki chekushandura (kuchinjisa);
• iko kudiwa kwekushanda pane frequency pamusoro pe50 Hz;
• mashandiro anogona kukanganiswa neguruva uye hunyoro, uye iyo sensor inogona kuona isiriyo chiyero;
• kupisa kwekunzwa.

Inogadzirisa maseru ari nyore kugadzira, zvichikonzera dhizaini yakasimba uye yakavimbika. Iyo parameter yeiyo capacitor inoenderana chete nehunhu hwayo uye haitsamire pamidziyo yezvinhu zvinoshandiswa, kana zvasarudzwa nemazvo.

Dambudziko rekunzwa kwavo kune tembiricha rinogona kugadziriswa nekusarudza akakodzera zvinhu zvemahwendefa uye kuputira kwakakodzera kwekusunga kwavo. Inosara chete yekuvandudza dziviriro yavo kubva kune zvinokuvadza zveguruva, hunyoro uye ion radiation, uye rudzi urwu rwema sensors rwunozove nechero rakapamhama hwakawanda hwekushandisa.

Uye pakupedzisira, tinogona kupfupisa ...

Capacitive sensors inoshandisa simba shoma remagetsi iro ravanoda kufambisa chikamu chinofamba, gadzirisa kubuda kwehurongwa uye kushanda nehupamhi hwepamusoro. Zvese izvi zvinoita kuti ma sensors aya ave akakosha pakuyera kuyerwa kwezvinhu zvinoitisa uye zvisingaite.

Mibvunzo nemhinduro:

Chii chinonzi capacitive sensors? Single-capacitive, double-capacitive. Zvakare, ivo vakakamurwa kuita: mutsara, angular, inclinometers, level sensors, pressure transducers.

Chii chinonzi capacitive sensors chakagadzirirwa uye chinoshanda sei? Mune ma sensors akadaro, iyo yakayerwa parameter inoshanduka, nekuda kwekuti kupikisa kunoshanduka. Masensor akadaro anoshandiswa kushandura kukosha kwehunyoro, kudzvanywa, simba remagetsi, nezvimwe.

Iyo capacitive level sensor inoshanda sei? Mune sensor yakadaro, nekuda kwekuchinja kweyero yakayerwa, capacitance ye capacitor inoshandukawo (inoumbwa neprobe uye madziro emvura - iyo yakawanda yemvura mumudziyo, iyo yakakwirira simba).