Ihame ryibanze nuburyo bukoreshwa bwa Hall igezweho na voltage sensor na transmitter

1. Igikoresho cyo mu Nzu

 

 

Igikoresho cya salle ni ubwoko bwa magnetoelectric ihindura ikozwe mubikoresho bya semiconductor.Niba igenzura ryubu IC ihujwe no kwinjiza impera, mugihe umurima wa magneti B unyuze hejuru ya magnetiki yumvikanisha igikoresho, Hall ishobora kuba VH igaragara kumusozo wanyuma.Nkuko bigaragara ku gishushanyo 1-1.

 

 

Ubunini bwa Hall ishobora kuba VH ihwanye nigicuruzwa cyo kugenzura IC hamwe na magnetiki flux yuzuye B, ni ukuvuga VH = khicbsin Θ

 

 

Ibyuma byerekana ibyuma bya Hall bikozwe hakurikijwe ihame ryamategeko ya Ampere, ni ukuvuga ko umurima wa rukuruzi ugereranije nu muyoboro ukorwa hafi yuyobora utwara ibintu, kandi ibikoresho bya salle bikoreshwa mu gupima uyu murima wa rukuruzi.Kubwibyo, kudahuza guhuza ibipimo bigezweho birashoboka.

 

 

Gupima mu buryo butaziguye icyerekezo cyumuyoboro utwara mugupima ubushobozi bwa Hall.Kubwibyo, sensor iriho ubu yakoresheje amashanyarazi ya magnetiki amashanyarazi yo kwigunga.

 

 

2. Ihame rya DC DC

 

 

Nkuko bigaragara ku gishushanyo cya 1-2.Kuberako umuzunguruko wa magneti ufite umurongo mwiza ufitanye isano nibisohoka mubikoresho bya salle, ibimenyetso bya voltage U0 bisohoka mubikoresho bya salle birashobora kwerekana mu buryo butaziguye ubunini bwapimwe I1 yapimwe, ni ukuvuga I1 ∝ B1 ∝ U0

 

 

Duhindura U0 kugirango bangane na 50mV cyangwa 100mV mugihe ibipimo byapimwe I1 nigiciro cyagenwe.Ibi bituma salle igaragara neza (nta amplification) sensor ya none.

 

 

3. Ihame ryindishyi zamazu

 

 

Umuzunguruko wibanze wibanze ufite ibipimo byapimwe I1, bizabyara ibintu bya magneti Φ 1. Imiyoboro ya magnetiki iterwa na I2 iriho ubu yatanzwe na coil ya kabiri yindishyi Φ 2 igumana uburinganire bwa magneti nyuma yindishyi, kandi ibikoresho bya salle bihora mubikorwa byo kumenya magnetiki zero flux.Byitwa rero Hall magnetic yindishyi zubu.Ubu buryo bwambere bwamahame aruta uburyo bwo kumenya neza.Ibyiza byayo byingenzi nigihe cyo gusubiza byihuse hamwe no gupima neza, bikwiranye cyane cyane no kumenya intege nke na nto.Ihame rya Hall magnetic indishyi zerekanwa mubishusho 1-3.

 

 

Igishushanyo 1-3 cyerekana: Φ 1 = Φ bibiri

 

 

I1N1 = I2N2

 

 

I2 = NI / N2 · I1

 

 

Iyo indishyi zubu I2 zinyuze mubipimo byo gupima RM, ihindurwamo voltage kumpande zombi za RM.Nka sensor, bapima voltage U0, ni ukuvuga U0 = i2rm

 

 

Ukurikije ihame rya Hall magnetic indishyi, sensor igezweho hamwe ninjiza yatanzwe kuva kumurongo wihariye.

 

 

Kuberako sensor ya magnetiki indangururamajwi igomba gukomeretsa hamwe nibihumbi byindishyi zindishyi kumpeta ya magneti, igiciro kiriyongera;Icya kabiri, ibikorwa byubu bikoreshwa nabyo byiyongera bikwiranye;Ariko, ifite ibyiza byukuri kandi byihuse kuruta kugenzura bitaziguye.

 

 

4. Magnetic indishyi ya sensor sensor

 

 

Kugirango upime akantu gato k'urwego rwa Ma, ukurikije Φ 1 = i1n1, kongera umubare wimpinduka za N1 birashobora no kubona ibintu byinshi bya magnetiki flux。 1。 Rukuruzi ntoya yakozwe nubu buryo ntishobora gupima gusa urwego rwa Ma gusa, ariko na voltage.

 

 

Bitandukanye na sensor iriho, mugihe upimye voltage, impinduka nyinshi zihindagurika kuruhande rwibanze rwa sensor sensor ihujwe murukurikirane hamwe na rezo irwanya imipaka R1, hanyuma igahuzwa hamwe na voltage yapimwe U1 kugirango ibone I1 ihwanye na voltage yapimwe U1, nkuko bigaragara ku gishushanyo 1-4.

 

 

Ihame ryuruhande rwa kabiri ni kimwe nki sensor ya none.Iyo indishyi zubu I2 zinyuze mubipimo byo gupima RM, ihindurwamo voltage kumpande zombi za RM nka voltage yo gupima U0 ya sensor, ni ukuvuga U0 = i2rm

 

 

5. Ibisohoka bya sensor igezweho

 

 

Kumenyekanisha mu buryo butaziguye (non amplification) sensor igezweho ifite impedance nyinshi zisohoka voltage.Mubisabwa, inzitizi yimitwaro igomba kuba irenze 10k Ω.Mubisanzwe, m 50mV cyangwa ± 100mV yahagaritswe gusohoka voltage yongerewe kuri ± 4V cyangwa ± 5V hamwe ninjiza itandukanye igereranya amplifier.Igicapo 5-1 cerekana imirongo ibiri ifatika kugirango ikoreshwe.

 

 

(a) Igishushanyo gishobora kuba cyujuje ibisabwa muri rusange;(b) Igishushanyo gifite imikorere myiza kandi irakwiriye mubihe bisabwa neza.

 

 

Kumenyekanisha mu buryo butaziguye byongerewe imbaraga za sensor ifite imbaraga zidasanzwe zo gusohoka.Mubisabwa, inzitizi yumutwaro igomba kuba irenze 2K Ω.

 

 

Magnetic indishyi zubu, voltage magnetic indishyi zubu hamwe na sensor ya sensor ni ubwoko bwibisohoka.Birashobora kugaragara kuva ku gishushanyo 1-3 ko impera ya "m" ihujwe no gutanga amashanyarazi "O"

 

 

Terminal ninzira yubu I2.Kubwibyo, ibimenyetso bisohoka kuva "m" iherezo rya sensor ni ikimenyetso kigezweho.Ikimenyetso kiriho gishobora koherezwa kure murwego runaka kandi birashobora kwizerwa.Mugukoresha, gupima kwihanganira RM ikeneye gusa gushushanywa kumurongo wa kabiri winjiza cyangwa interineti igenzura.

 

 

Kugirango hamenyekane ibipimo bihanitse neza, hagomba kwitonderwa: accuracy ubunyangamugayo bwo gupima ibipimo byatoranijwe nkibikoresho byo kurwanya firime, hamwe na ≤ ± 0.5%.Reba Imbonerahamwe 1-1 kugirango ubone ibisobanuro birambuye.Kwinjiza inzitizi yumuzingi wigikoresho cya kabiri cyangwa ikibaho cyo kugenzura itumanaho bigomba kuba birenze inshuro 100 kurenza ibipimo byo gupima.

 

 

6. Kubara icyitegererezo cya voltage no gupima ubukana

 

 

Kuva kuri formula ibanza

 

 

U0 = I2RM

 

 

RM = U0 / I2

 

 

Aho: U0 - yapimwe voltage, izwi kandi nka sampling voltage (V).

 

 

I2 - indishyi ya kabiri yinguzanyo iriho (a).

 

 

RM - gupima kurwanya (Ω).

 

 

Iyo ubara I2, ibyasohotse (agaciro kagereranijwe neza) I2 ihuye numuyoboro wapimwe (wagenwe agaciro keza) I1 urashobora kuboneka uhereye kumiterere ya tekiniki ya tekiniki ya magnetiki yindishyi zikoreshwa.Niba I2 igomba guhinduka muri U0 = 5V, reba Imbonerahamwe 1-1 yo guhitamo RM.

 

 

7. Kubara ingingo yuzuye hamwe * nini nini yapimwe

 

 

Birashobora kugaragara kuva ku gishushanyo 1-3 ko umuzenguruko wibisohoka I2 ari: v + → Ikusanyirizo Emitter ya power amplifier ya nyuma → N2 → RM → 0. Kurwanya ibingana n’umuzunguruko bigaragara ku gishushanyo 1-6.(umuzenguruko wa v- ~ 0 ni kimwe, kandi ikigezweho kiratandukanye)

 

 

Iyo ibisohoka bigezweho i2 * nini, agaciro kubu ntikizongera kwiyongera hamwe no kwiyongera kwa I1, aribyo bita saturation point ya sensor.

 

 

Kubara ukurikije formula ikurikira

 

 

I2max = V + -VCES / RN2 + RM

 

 

Aho: V + - amashanyarazi meza (V).

 

 

Vces - Gukusanya Kwiyungurura Umuvuduko w'amashanyarazi, (V) muri rusange ni 0.5V.

 

 

RN2 - DC irwanya imbere ya coil ya kabiri (Ω), reba imbonerahamwe 1-2 kugirango ubone ibisobanuro.

 

 

RM - gupima kurwanya (Ω).

 

 

Birashobora kugaragara uhereye kubara ko ingingo yuzuye ihindagurika hamwe nimpinduka zapimwe zapimwe RM.Iyo ibipimo byapimwe RM byagenwe, hari ingingo yuzuye.Kubara * nini yapimwe i1max ukurikije formula ikurikira: i1max = i1 / i2 · i2max

 

 

Mugihe upima AC cyangwa pulse, mugihe RM yagenwe, ubare * nini yapimye i1max.Niba i1max agaciro kari munsi yimpanuka ya AC ya AC cyangwa munsi ya pulse amplitude, bizatera ibisohoka byavunitse cyangwa kugabanuka kwa amplitude.Muri iki kibazo, hitamo RM ntoya kugirango ikemure.

 

 

8. Urugero rwo kubara:

 

 

Urugero 1

 

 

Fata sensor iriho lt100-p nkurugero:

 

 

(1) Ibipimo bisabwa

 

 

Ikigereranyo cyagenwe: DC

 

 

* Umuyoboro mwinshi: DC (igihe kirenze ≤ umunota / isaha)

 

 

(2) Reba hejuru kumeza umenye

 

 

Umuvuduko wakazi: voltage itajegajega ± 15V, coil imbere imbere 20 Ω (reba imbonerahamwe 1-2 kugirango ubone ibisobanuro)

 

 

Ibisohoka bigezweho: (agaciro kagenwe)

 

 

(3) Ibisabwa by'icyitegererezo cya voltage: 5V

 

 

Kubara niba ibipimo byapimwe hamwe na sampling voltage ikwiye

 

 

RM = U0 / I2 = 5 / 0.1 = 50 (Ω)

 

 

I2max = V + -VCES / RN2 + RM = 15-0.5 / 20 + 50 = 0.207 (A)

 

 

I1max = I1 / I2 · I2max = 100 / 0.1 × 0.207 = 207 (A)

 

 

Birazwi uhereye kubisubizo byavuzwe haruguru ko ibisabwa bya (1) na (3) byujujwe.

 

 

9. Ibisobanuro nurugero rwa magnetiki indishyi ya voltage sensor

 

 

Lv50-p voltage sensor ifite ingufu zambere nizisumbuye zirwanya amashanyarazi ≥ 4000vrms (50hz.1min), ikoreshwa mugupima ingufu za DC, AC na pulse.Iyo upimye voltage, ukurikije igipimo cya voltage, rezistor igabanya imipaka ihujwe murukurikirane kuruhande rwibanze + HT terminal, ni ukuvuga ko voltage yapimwe ibona uruhande rwibanze runyuze muri résistor

 

 

U1 / r1 = I1, R1 = u1 / 10ma (K Ω), imbaraga zo guhangana zigomba kuba zikubye inshuro 2 ~ 4 kurenza agaciro kabaruwe, kandi ubunyangamugayo bugomba kuba ≤ ± 0.5%.R1 itomoye neza insinga yamashanyarazi irashobora gutumizwa nuwabikoze.

 

 

10. Uburyo bwo gukoresha insinga za sensor

 

 

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(3) Igishushanyo cyerekana insimburangingo ya magnetiki indangururamajwi irerekanwa mu gishushanyo 1-9.

 

 

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Uburyo bwacapishijwe ikibaho pin ihuza uburyo bwa sensor eshatu zavuzwe haruguru burahuza nuburyo bwo gutondekanya ikintu nyacyo, kandi uburyo bwa sock plug ihuza uburyo nabwo burahuza nuburyo bwo gutondekanya ikintu nyacyo, kugirango wirinde amakosa yo gukoresha insinga.

 

 

Ku gishushanyo mbonera cyavuzwe haruguru, ibipimo byapimwe I1 byumuzunguruko nyamukuru bifite umwambi mu mwobo kugirango werekane icyerekezo cyiza cyumuyaga, kandi icyerekezo cyiza cyumuyaga nacyo cyerekanwe kumasaka yumubiri.Ibi ni ukubera ko sensor iriho iteganya ko icyerekezo cyiza cyapimwe I1 yapimwe ni ya polarite imwe nki bisohoka I2.Ibi nibyingenzi mubice bitatu AC cyangwa imiyoboro myinshi ya DC.

 

 

11. Gukora amashanyarazi akora ya sensor ya voltage na voltage

 

 

Sensor iriho ubu ni module ikora, nkibikoresho bya salle, ibyuma byongera imbaraga hamwe nigituba cyanyuma, ibyo byose bikenera amashanyarazi no gukoresha amashanyarazi.Igicapo 1-10 nigishushanyo gifatika cyibishushanyo mbonera bisanzwe bitanga amashanyarazi.

 

 

(1) Ibisohoka byubutaka byahujwe hagati na electrolysis nini yo kugabanya urusaku.

 

 

(2) Ubushobozi bit UF, diode 1N4004.

 

 

(3) Transformator iterwa no gukoresha ingufu za sensor.

 

 

(4) Imikorere ikora ya sensor.

 

 

Igenzura ritaziguye (nta amplification) gukoresha ingufu: * 5mA;Gukoresha imbaraga zo gutahura imbaraga zikoreshwa: * binini ± 20mA;Imbaraga za magnetiki zikoresha ingufu: 20 + ibisohoka bigezweho * Gukoresha cyane imbaraga zakazi 20 + inshuro ebyiri ibyasohotse.Imikoreshereze y'amashanyarazi irashobora kubarwa ukurikije amashanyarazi akoreshwa.

 

 

12. Icyitonderwa cyo gukoresha ibyuma byerekana ibyuma bya voltage na voltage

 

 

.Niba umuyaga wapimwe urenze imipaka igihe kirekire, byangiza umuyoboro wanyuma wimbaraga za amplifier (bivuga ubwoko bwindishyi za magneti).Mubisanzwe, igihe cyikubye kabiri imitwaro irenze ntishobora kurenza umunota 1.

 

 

.Muri rusange, igihe cyikirenga cyikirenga ntigishobora kurenza umunota 1.

 

 

.Iyo voltage yapimwe irenze agaciro kagereranijwe k'umubyigano wa voltage, imbaraga zigabanya ubukana zigomba guhinduka.Iyo ibipimo byapimwe biri munsi ya 1/2 cyagaciro kagenwe, kugirango ubone neza neza, uburyo bwo guhinduka burashobora gukoreshwa.

 

 

.Rukuruzi ya 6kV irashobora gukora mubisanzwe muri sisitemu ya AC ya 2KV no munsi na DC ya sisitemu ya 2.5KV na munsi mugihe kirekire.Witondere kutayikoresha mugihe gikabije.

 

 

.Gusimbuza ibintu bito cyangwa byinshi hamwe nini nini bizagira ingaruka kubiranga imbaraga.

 

 

.Gusigara bigira ingaruka ku kuri.Uburyo bwa demagnetisation nugukingura AC kuruhande rwibanze utongeyeho amashanyarazi akora hanyuma ukagabanya agaciro kayo gahoro gahoro.

 

 

.Iyo wiringi ibyiciro bitatu birebire, intera iri hagati yicyiciro igomba kuba irenze 5 ~ 10cm.

 

 

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.Mugihe cyo kugerageza ubushobozi burenze, umuvuduko urenze inshuro 2 ntushobora kurenza umunota 1.

 

 

.Abakoresha bafite ibisabwa byihariye kandi barashobora guhitamo ubushyuhe bwo hejuru bwa plastike nkigikonoshwa.

 

 

13. Ibyiza bya sensor igezweho ikoreshwa

 

 

(1) Kutamenyekana.Mu kongera kubaka ibikoresho byatumijwe mu mahanga no guhindura tekinike ibikoresho bishaje, byerekana ubunararibonye bwo gupima kudahuza;Agaciro kagezweho karashobora gupimwa nta gihindutse kumashanyarazi yibikoresho byumwimerere.

 

 

(2) Ingaruka zo gukoresha shunt nuko idashobora gutandukanywa n'amashanyarazi, kandi hariho no gutakaza igihombo.Ninini igezweho, niko igihombo kinini, kandi nini nini.Abantu basanze kandi shunt ifite byanze bikunze inductance mugihe imenye inshuro nyinshi kandi nini cyane, kandi ntishobora rwose kwanduza imiyoboro yapimwe yapimwe, kereka niba atari ubwoko bwa sine.Sensor iriho ubu ikuraho burundu ibibi byavuzwe haruguru bya shunt, kandi agaciro nukuri n’ibisohoka n’umuvuduko wa voltage birashobora kuba nkibya shunt, nkurwego rwukuri 0.5, 1.0, ibisohoka bya voltage urwego 50, 75mV na 100mV.

 

 

(3) Biroroshye cyane gukoresha.Fata sensor ya lt100-c, uhuze metero 100mA igereranya cyangwa multimeter ya digitale ikurikiranye kuri M iherezo na zeru ya zeru itanga amashanyarazi, uhuze amashanyarazi akora, hanyuma ushyire sensor kumuzinga winsinga, kugirango umuyoboro agaciro k'umuzunguruko nyamukuru 0 ~ 100A irashobora kugaragara neza.

 

 

.Mubyongeyeho, hari ibintu bishimishije mugihe gikora, iki rero nigikoresho cyinductive, igihe rero cyo gusubiza gishobora kuba milisegonda icumi gusa.Nkuko twese tubizi, iyo uruhande rwa kabiri rwa transformateur rugezweho rufunguye uruziga, ruzatanga ibyago byinshi bya voltage.Mugukoresha microcomputer detection, birakenewe kugura imiyoboro myinshi.Abantu barimo gushakisha uburyo bwo kwigunga no gukusanya ibimenyetso


Igihe cyo kohereza: Jul-06-2022