Analog sensors anoshandiswa zvakanyanya muindasitiri inorema, indasitiri yemwenje, machira, kurima, kugadzira uye kuvaka, dzidzo yehupenyu hwezuva nezuva uye tsvakiridzo yesainzi, uye mamwe minda. Analog sensor inotumira chiratidzo chinoenderera, ine voltage, ikozvino, kuramba nezvimwe, saizi yeakayerwa paramita. Semuenzaniso, tembiricha sensor, gasi sensor, kudzvanya sensor uye zvichingodaro zvakajairika analog quantity sensor.
Analog quantity sensor ichasanganawo nekukanganisika pakutumira masaini, kunyanya nekuda kwezvinotevera zvinhu:
1.Electrostatic inokonzera kupindira
Electrostatic induction inokonzerwa nekuvapo kweparasitic capacitance pakati pezvikamu zviviri zvebazi kana zvikamu, kuitira kuti mutero mune rimwe bazi uendeswe kune rimwe bazi kuburikidza neparasitic capacitance, dzimwe nguva inozivikanwawo se capacitive coupling.
2, Electromagnetic induction kupindira
Kana paine mutual inductance pakati pemaseketi maviri, shanduko mune yazvino mune imwe dunhu inobatanidzwa kune imwe kuburikidza nemagineti, chiitiko chinozivikanwa se electromagnetic induction. Iyi mamiriro ezvinhu anowanzosangana mukushandiswa kwema sensors, inoda kubhadhara zvakanyanya.
3, Leakage flu inofanira kukanganisa
Nekuda kwekushomeka kwakashata kwechikamu chebracket, terminal post, yakadhindwa yedunhu bhodhi, yemukati dielectric kana goko re capacitor mukati memagetsi dunhu, kunyanya kuwedzera kwehunyoro munzvimbo yekushandiswa kwe sensor, kushomeka kwekudzivirira kweiyo insulator kunoderera, uye ipapo iyo yekudonha ikozvino ichawedzera, nekudaro ichikonzera kukanganisa. Mhedzisiro yacho inonyanya kuipa kana iyo leakage ikozvino ichipinda muchikamu chekuyeresa chedunhu.
4, kukanganiswa kweRadio frequency
Icho chinonyanya kukanganisa kunokonzerwa nekutanga uye kumira kwemagetsi makuru emagetsi uye kupindira kwepamusoro-soro yeharmonic.
5.Zvimwe zvinokanganisa zvinhu
Inonyanya kutaura nezvehurombo hwekushanda nharaunda yehurongwa, sejecha, guruva, hunyoro hwepamusoro, tembiricha yepamusoro, makemikari zvinhu uye dzimwe nzvimbo dzakaomarara. Munharaunda ine hutsinye, ichakanganisa zvakanyanya mabasa eiyo sensor, senge probe yakavharwa neguruva, guruva uye chidimbu, izvo zvinokanganisa kurongeka kwechiyero. Munzvimbo yakanyanyisa humidity, mhute yemvura inogona kupinda mukati me sensor uye inokonzera kukanganisa.
Sarudza aStainless steel probe housing, iyo yakaoma, yakakwirira tembiricha uye inodzivirira ngura, uye guruva nemvura inodzivirira kudzivirira kukuvadzwa kwemukati kune sensor. Kunyangwe iyo probe shell isina mvura, haizokanganisa iyo sensor yekupindura kumhanya, uye kuyerera kwegasi nekutsinhana nekukurumidza, kuitira kuti uwane mhedzisiro yekupindura nekukurumidza.
Kuburikidza nenhaurirano iri pamusoro, tinoziva kuti kune zvakawanda zvinokanganisa zvinhu, asi izvi zvinongori zvakazara, zvakanangana nechiitiko, zvinogona kunge zviri mhedzisiro yezvakasiyana zvekukanganisa zvinhu. Asi izvi hazvikanganisi tsvakiridzo yedu paanalog sensor anti-jamming tekinoroji.
Analog sensor anti-jamming tekinoroji inonyanya kuve neinotevera:
6.Sheilding Technology
Midziyo inogadzirwa nesimbi. Dunhu rinoda kuchengetedzwa rakaputirwa mukati maro, rinogona kudzivirira kupindira kwemagetsi kana magnetic field. Iyi nzira inonzi shielding. Shielding inogona kukamurwa kuita electrostatic shielding, electromagnetic shielding uye yakaderera frequency magineti kudzivirira.
(1) Electrostatic Shieding
Tora mhangura kana aruminiyamu uye mamwe masimbi emagetsi semidziyo, gadzira chigadziko chesimbi chakavharwa, uye ubatanidze newaya yepasi, isa kukosha kwedunhu kuti richengetedzwe muR, kuitira kuti kupindira kwekunze kwemagetsi kusingakanganise dunhu remukati, uye zvakasiyana, nzvimbo yemagetsi inogadzirwa nekati yemukati haizokanganisa dunhu rekunze. Iyi nzira inonzi electrostatic shielding.
(2) Electromagnetic Shielding
Kune iyo yakakwira frequency kupindira magineti, musimboti weeddy yazvino unoshandiswa kuita iyo yakakwira frequency kupindira magetsi emagetsi kuburitsa eddy ikozvino musimbi yakadzivirirwa, iyo inoshandisa simba rekukanganisa remagineti, uye eddy yazvino magineti inodzima yakakwira. frequency kupindira magineti, kuitira kuti dunhu rakachengetedzwa ridzivirirwe kubva kusimba reiyo yakakwirira frequency electromagnetic munda. Iyi nzira yekudzivirira inonzi electromagnetic shielding.
(3) Low Frequency Magnetic Shielding
Kana iri yakaderera-frequency magnetic field, iyo eddy yemazuva ano chiitiko haisi pachena panguva ino, uye anti-interference effect haisi yakanaka kwazvo chete nekushandisa nzira iri pamusoro. Naizvozvo, yakakwira magineti conductivity zvinhu zvinofanirwa kushandiswa sechivharo chekudzivirira, kuitira kudzikamisa yakaderera-frequency kupindira magineti induction mutsara mukati megineti shielding layer ine diki remagineti kuramba. Dunhu rakachengetedzwa rinodzivirirwa kubva kune yakaderera frequency magnetic coupling kupindira. Iyi nzira yekudzivirira inowanzonzi yakaderera frequency magnetic shielding. Iyo simbi shell ye sensor yekuona chiridzwa inoita seyakaderera frequency magineti shield. Kana ikawedzera kudzika pasi, inotambawo basa rekudzivirira kwemagetsi uye electromagnetic shielding.
7.Grounding teknolojia
Ndiyo imwe yenzira dzinoshanda dzekudzvinyirira kupindira uye vimbiso yakakosha yekudzivirira tekinoroji. Kudzika pasi kwakaringana kunogona kudzvanya kupindira kwekunze, kuvandudza kuvimbika kweiyo test system, uye kuderedza kukanganiswa kwezvinhu zvinogadzirwa neiyo system pachayo. Chinangwa chekugadzika paviri: kuchengetedza uye kupindira kudzvinyirira. Nokudaro, kugadzika kwakakamurwa kuva chidziviriro chekudzivirira, kudzivirira pasi uye chiratidzo chepasi. Nechinangwa chekuchengetedza, iyo casing uye chassis yeiyo sensor yekuyeresa mudziyo inofanira kudzikwa. Ivhu rechiratidzo rakakamurwa kuita analog chiratidzo pasi uye dhijitari chiratidzo chepasi, analogi chiratidzo chinowanzo kushaya simba, saka zvinodiwa pasi zvakakwirira; dhijitari chiratidzo kazhinji yakasimba, saka zvinodiwa pasi zvinogona kuderera. Mamiriro ekuona ma sensor akasiyana anewo akasiyana zvinodiwa munzira yekuenda pasi, uye nzira yakakodzera yekugadzika inofanirwa kusarudzwa. Nzira dzakajairwa dzekudzika dzinosanganisira imwe-poindi yepasi uye yakawanda-nzvimbo yepasi.
(1) Pfungwa imwe chete
Mune yakaderera frequency maseketi, zvinowanzo kurudzirwa kushandisa imwe poindi yekumisa, iyo ine radial yekumisa mutsara uye mutsara webhazi. Radiological grounding inoreva kuti dunhu rega rega rinoshanda mudunhu rakabatana zvakananga ne zero inogoneka yekunongedza nzvimbo newaya. Busbar grounding zvinoreva kuti maconductor emhando yepamusoro ane imwe nzvimbo yakachinjika anoshandiswa sebhazi rekudzika, iro rakabatana zvakananga kune zero inokwanisika nzvimbo. Ivhu revhavha yega yega inoshanda mudunhu rinogona kubatanidzwa kune bhazi riri pedyo. Sensors uye zviyereso zvekushandisa zvinoumba yakakwana yekuona sisitimu, asi inogona kunge iri kure.
(2) Multi-point grounding
Yepamusoro-frequency maseketi anowanzo kukurudzirwa kutora akawanda-point grounding. Yakakwira frequency, kunyangwe ipfupi nguva yepasi ichave neyakakura impedance voltage kudonha, uye mhedzisiro yekugovera capacitance, isingagoneke imwe-poindi yepasi, saka inogona kushandiswa flat type yepasi nzira, iyo nzira yemultipoint earthing, uchishandisa yakanaka conductive kusvika zero. inogona kunongedzera pamutumbi wendege, iyo yakakwirira frequency reketi yekubatanidza kune iri pedyo conductive ndege pamuviri. Nekuti iyo yakakwira frequency impedance yemuviri wendege inoitisa idiki, iwoyo mukana wakafanana panzvimbo yega yega unovimbiswa, uye bypass capacitor inowedzerwa kudzikisa kudonha kwemagetsi. Naizvozvo, mamiriro aya anofanira kutora akawanda-point grounding mode.
8.Sefa tekinoroji
Sefa ndiyo imwe yenzira dzinoshanda dzekudzvanyirira AC serial modhi kukanganiswa. Iwo akajairwa mafirita maseketi muyevha yekuona sensor anosanganisira RC sefa, AC simba sefa uye yechokwadi ikozvino simba sefa.
(1) RC sefa: kana iyo siginecha sosi iri sensor ine inononoka siginecha shanduko senge thermocouple uye strain gage, iyo passive RC sefa ine vhoriyamu diki uye yakaderera mutengo ichave iri nani inhibition mhedzisiro pane akateedzana modhi kupindira. Izvo zvinofanirwa kucherechedzwa, zvisinei, kuti RC mafirita anoderedza akateedzana modhi kukanganisika nekurasikirwa kwehurongwa hwekupindura kumhanya.
(2) AC magetsi sefa: network yemagetsi inotora akasiyana epamusoro uye yakaderera frequency ruzha, iyo inowanzoshandiswa kudzvanya ruzha rwakasanganiswa nemagetsi emagetsi LC sefa.
(3) DC magetsi sefa: DC magetsi emagetsi anowanzo kugovaniswa nemasekete akati wandei. Kuti udzivise kukanganiswa kunokonzerwa nemaseketi akati wandei kuburikidza nekupikiswa kwemukati kweiyo magetsi, RC kana LC decoupling sefa inofanirwa kuwedzerwa kune DC magetsi edunhu rega rega kusefa kunze kwakaderera-frequency ruzha.
9.Photoelectric coupling teknolojia
Mukana mukuru wekubatanidza photoelectric nderekuti inogona kunyatso kudzora iyo peak pulse uye marudzi ese eruzha kupindira, kuitira kuti chiratidzo-ku-ruzha chiyero muchiratidzo chekufambisa kwechiratidzo chivandudzwe zvakanyanya. Ruzha rwekukanganisa, kunyangwe paine yakakura voltage renji, asi simba racho idiki, rinogona kungoita isina simba ikozvino, uye iyo photoelectric coupler inopinza chikamu chechiedza emitting diode inoshanda pasi pemamiriro azvino, general guide magetsi e10 ma ~ 15 ma, saka kunyangwe paine huwandu hukuru hwekuvhiringidza, kupindira hakuzokwanisi kupa zvakakwana ikozvino uye kudzvinyirirwa.
Ona pano, ndinotenda isu tine imwe nzwisiso yeanalog sensor yekupindira zvinhu uye nzira dzinopesana nekupindira, kana uchishandisa analogi sensor, kana kuitika kwekukanganisa, maererano nezviri pamusoro apa imwe neimwe ongororo, zvinoenderana nemamiriro chaiwo. tora matanho, haafanire kupofumadza kugadzirisa, kudzivirira kukanganisa kune sensor.
Nguva yekutumira: Jan-25-2021
