Txoj kev tiv thaiv zoo hluav taws xob hauv kev tsim hluav taws xob
Hauv kev tsim hluav taws xob, hluav taws xob tua hluav taws feem ntau ua rau lub tshuab hluav taws xob tsis zoo, thiab txawm ua rau cov khoom hluav taws xob poob lawv txoj haujlwm, ua rau muaj kev piam sij los ntawm kev ua yuam kev. Yog li, electrostatic tiv thaiv hauv kev tsim hluav taws xob kev lag luam tseem ceeb heev, feem ntau yog to taub, Tsom xam cov ntsiab lus ntawm kev tsim hluav taws xob thiab kev tiv thaiv electrostatic hauv hluav taws xob tsim khoom, thiab xaus lub tswv yim ntawm kev tiv thaiv electrostatic tiv thaiv thiab cov kev ntsuas hauv kev tsim.
Qhov hluav taws xob ntawm hluav taws xob yog ib qho tsis pom kev thiab tsis siv hluav taws xob. Nws nyob rau ntawm qhov khoom. Nws yog qhov tshwm sim ntawm qhov tsis txaus siab ntawm kev pom zoo thiab tsis pom zoo hauv lub zos ntau. Nws yog tsim los ntawm kev hloov dua siab tshiab ntawm electrons los yog ions. Qhov tshwm sim electrostatic yog txheej txheem ntawm kev them nqi thiab kev poob siab. Ib lub sij hawm dav rau hluav taws xob tshwm sim ua rau hauv tus txheej txheem. Piv txwv li: kev tsim hluav taws xob luam, kev ua neeg lub cev thiab lwm yam tshwm sim.
Lub tshuab hluav taws xob hluav taws xob tau tsim los ntawm kev tsim cov khoom hluav taws xob thiab kev khiav tsheb mus los, thiab lwm yam ntau dhau deb qhov kev sib txuas ntawm MOS cov hluav taws xob, uas feem ntau ua rau kev puas tawm (ib nrab ntawm kev puas tsuaj), uas ua rau lawv tsis ua qhov khoom. Kev ntseeg.
Yuav kom tswj thiab tshem tawm ESD, qee lub tebchaws tau txhim tsa lub teb chaws, kev ua tub rog, thiab cov qauv kev cai lossis kev cai. Los ntawm kev tsim, siv ua, muag, warehousing, tshuaj ntsuam, warehousing, sib dhos, commissioning, ntim thiab kev thauj mus los ntawm semi-tiav cov khoom thiab tiav lawm cov khoom, muaj cov cai tswj ntawm qhov siv thiab ua, siv thiab tswj cov khoom siv tiv thaiv zoo li qub. Yuav tsum tswj cov kev cai lij choj,
Cov cuab yeej uas ua rau cov electrostatic kev tsis haum yog hu ua electrostatically sensitive components (SSDs). Electrostatic sensitive Cheebtsam yog xa mus rau cov txheej txheem loj heev, tshwj xeeb tshaj yog metallized film semiconductors (MOS circuits). Cov kev ntsuas tiv thaiv electrostatic sib txawv yog coj los sib txawv hauv SSD.
Lub hwj chim uas muaj hluav taws xob nyob hauv cov khoom siv hauv hluav taws xob:
(1) Kev ua haujlwm ntawm tib neeg lub cev, kev siv hluav taws xob los ntawm kev sib txhuam, kev sib cuag thiab sib cais nruab nrab ntawm tib neeg thiab khaub ncaws, khau, thom khwm, thiab lwm yam yog ib qho ntawm qhov tseem ceeb ntawm qhov chaw siv hluav taws xob. Lub cev hluav taws xob nyob hauv tib neeg lub cev yog qhov tseem ceeb ntawm kev sib zog (mos) ntawm lub cuab yeej. Tus electrostatic voltage generated los ntawm tib neeg cov kev ua ub no yog kwv yees li 0.5-2KV. Tsis tas li ntawd, cov av noo ntawm huab cua muaj ib qho txiaj ntsig zoo ntawm qhov hluav taws xob ntawm qhov hluav taws xob, thiab nws nce ntxiv los ntawm ib qho kev txiav txim siab ntawm qhov loj hauv qhov chaw qhuav. Cov lus 2 qhia tau hais tias kev sib raug zoo ntawm cov txheeb ze ntawm lub cev thiab lub cev ntawm lub cev.
Thaum cov tib neeg lub cev raug them nyiaj thiab raug xa mus rau hauv av xaim, yuav muaj tshwm sim tawm, thiab tib neeg lub cev yuav tsim ntau hom kev hloov hluav taws xob. Cov teeb meem ntawm cov tshuaj tiv thaiv no yog hu ua hluav taws xob lub zog tsoo. Ntu 3 qhia tau tias lub cev poob siab ntawm tib neeg lub cev thaum lub sijhawm sib txawv ntawm qhov sib txawv.
(2) Thaum cov tshuaj fiber ntau los sis cov paj rwb tag nrho tawm ntawm qhov chaw ua haujlwm thiab lub rooj, ib qho hluav taws xob ntawm 6000V lossis ntau tshaj qhov hluav taws xob tau tuaj yeem tsim los ntawm cov ris tsho, thiab tib neeg lub cev raug them. Thaum sib cuag nrog lub ntaus ntawv, nws yuav ua rau paug thiab yooj yim ua puas tsuaj.
(3) Cov rwb thaiv tsev ntawm lub roj hmab los yog cov yas yas yog siab li 1013 Ω. Thaum nws rubs tawm tsam hauv av, nws generates hluav taws xob muaj hluav taws xob thiab them nyiaj rau tib neeg lub cev.
(4) Thaum cov xim, xim zaj duab xis, thiab cov yeeb yaj duab yas ntim khoom xa tuaj rau hauv ib lub hnab, qhov ntom ntawm cov cuab yeej thiab cov khoom ntim tau tsim ib qho hluav taws xob ntawm qhov hluav taws xob ntawm ntau pua volts mus paim qhov cuab yeej.
(5) Ntau yam khoom ntim, txiab, thiab ciaj los ntawm cov ntaub ntawv (polymer) PP (polypropylene), PE (polyethylene), PS (polyvinylidene), PVR (polyurethane), PVC, polyester, thiab pob tshuaj. Cov thawv, PCB racks, etc. tej zaum yuav ua rau 1-3.5KV electrostatic voltage vim kev sib txhuam thiab kev poob siab, thiab tshem tawm cov khoom seem.
(6) Cov hauj lwm ncaj ncees nto, tsim los ntawm kev sib txhuam kom tsim hluav taws xob zoo.
(7) Lub rwb thaiv tsev ntawm cov pob zeb, cov khoom ci ci, cov roj hmab thiab lwm cov plag tsev nyob hauv siab, thiab tus nqi ntawm lub cev tib neeg lub cev tsis yooj yim.
(8) Cov khoom siv hauv tshuab hluav taws xob thiab cov cuab yeej siv: Cov twj siv hluav taws xob thiab cov cuab yeej hluav taws xob ntsaws hauv cov khoom siv xws li cov laug ci, cov tshuab ua yawm suab, lub tshuab ua kom rov qab, cov chaw tso tsheb, cov khoom siv thiab kev tshuaj ntsuam xyuas txhua yam. Yog hais tias cov khoom siv tsis zoo, nws yuav ua rau lub cuab yeej ua kom lub ntsej muag tsis tiav thaum lub sijhawm tsim khoom. Cov cua kub cua hauv lub qhov cub thiab lub txee txhuam, thiab CO2 pa hauv lub thawv txias hauv lub thawv CO2 yuav ua kom muaj nyiaj ntau npaum li cas.
Ntsiab cai ntawm kev tiv thaiv electrostatic:
Hauv kev siv ntawm cov khoom hluav taws xob, nws tsis tuaj yeem tsim kom muaj hluav taws xob zoo li qub. Lub sijhawm ntawm hluav taws xob zoo li qub tsis yog muaj kev phom sij, qhov kev nyab xeeb nta ntawm qhov hluav taws xob hauv hluav taws xob thiab lub qhov hluav taws xob uas tawm hauv lub cev. Qhov tseem ceeb ntawm kev tiv thaiv electrostatic yog "kev tshem tawm ntsiag to".
Ntsiab cai ntawm kev tiv thaiv electrostatic:
(1) Tiv thaiv kom tsis txhob muaj hluav taws xob hauv hluav taws xob los ntawm qhov chaw ua hluav taws xob uas muaj hluav taws xob. Coj ntsuas hauv kev nyab xeeb.
(2) Tshem tawm ntawm qhov hluav taws xob uas twb muaj lawm thiab muab tso tawm tam sim ntawd.
Electrostatic tiv thaiv txoj kev:
(1) Siv cov khoom siv antistatic: Hlau yog tus neeg xyuas pib, uas yuav ua kev puas tsuaj rau lub tshuab loj tuaj ntawm tus neeg xyuas pib. Tsis tas li ntawd, txij li thaum cov khoom siv insulating yog nws rau triboelectric them nyiaj, hlau thiab insulating cov ntaub ntawv yuav siv tsis tau raws li cov khoom siv antistatic. Xwb, tus neeg hu ua electrostatic tus neeg muaj qhov tsis muaj zog ntawm 1 × 10 5 Ω · cm los yog tsawg dua thiab tus electrostatic tus neeg tsav tsheb uas muaj qhov tsis txaus siab ntawm 1 × 10 5 -1 × 10 8 Ω · cm yog siv los ua cov tshuaj tiv thaiv khoom. Piv txwv li, cov khoom siv tiv thaiv electrostatic uas feem ntau siv tau los ntawm cov khoom siv roj qaum dub hauv roj hmab, thiab qhov ua haujlwm saum npoo tswj tau 1 x 10 6 Ω · cm los yog tsawg dua.
(2) Tshem tawm thiab av: Pem teb qhov chaw uas muaj hluav taws xob hauv hluav taws xob los yog tau tshwm sim, thiab muab kev tso dej electrostatic. Txoj kev ntawm kev faus lub hauv paus xaim tsim ib qho "kev ywj pheej" hauv av. Ua qhov nruab nrab hauv av thiab lub ntiaj teb <> (Saib GBJl79 lossis SJ / T10694-1996)
Cov ntaub ntawv pov thawj tiv thaiv: Siv cov khoom tiv thaiv zoo li qub (xws li cov txee rau saum npoo pas zom, pas pem hauv av, . Tus 1MΩ resistor txuas nrog hauv xov kom paub tseeb tias qhov tam sim no yog <5ma rau="" hauv="" av,="" hu="" ua="" hauv=""> Lub tshuab hluav taws xob thiab hluav taws xob electrostatic shield feem ntau yog ncaj qha, hu ua nyuaj hauv av.
(3) Kev tshem tawm hluav taws xob ntawm tus neeg taw qhia: Cov hluav taws xob uas muaj hluav taws xob nyob rau hauv lub peev xwm yuav raug muab tso tawm kom ua rau hluav taws xob tsis zoo rau lub ntiaj teb. Lub sijhawm thiab tso lub sijhawm tawm ntawm lub cev tawm tuaj yeem raug qhia los ntawm kab zauv nram qab no: UT = U0L1 / RC. Hauv cov mis, qhov voltage ntawm UT-T sijhawm (V) U0 yog qhov pib voltage (V) R-qhov sib npaug (Ω) C-conductor sib npaug capacitance (pf).
Nws yog feem ntau yuav tsum tau xaim hluav taws xob tsis pub dhau 1 thib ob. Ntawd yog qhov, qhov voltage yog txo kom muaj kev nyab xeeb hauv qab 1OOV hauv 1 thib ob. Qhov no yuav tiv thaiv kom txhob khiav tawm ntawm kev ceev dhau los thiab qhov tso tawm tam sim no kom loj dhau rau kev puas tsuaj rau SSD. Yog U0 = 500V, C = 200pf, yog tias koj xav ua kom tus UT ncav cuag 100V hauv 1 thib ob, koj xav tau R = 1.28 × 109Ω. Vim li no, ESD tiv thaiv kab ke feem ntau siv lub 1MΩ tam sim no ua kom tsis taus los txo cov ntshav tam sim no kom tsawg dua 5mA. Qhov no yog tsim los rau kev xyuam xim ua haujlwm. Yog hais tias tus neeg teb xov tooj yog nyob rau hauv ESD tiv thaiv system, yuam kev kov lub 220V muaj hluav taws xob yuav tsis ua teeb meem.
(4) Kev tshem tawm cov hluav taws xob uas tsis muaj hluav taws xob: Cov hluav taws xob nyob hauv kev siv hluav taws xob, vim hluav taws xob tsis tuaj yeem ntws ntawm cov hluav taws xob, cov hluav taws xob tsis muaj peev xwm tshem tawm tau los ntawm av. Cov kev ntsuas nram no tuaj yeem tau txais:
(a) Siv ib qho ion cua-ion kiv cua kom tsim tau zoo thiab tsis zoo ions, uas yuav cuam tshuam tau hluav taws xob ntawm qhov hluav taws xob zoo li qub. Yuav muab tso rau ntawm qhov chaw thiab qhov chaw muab tso rau hauv lub tshuab kev tso kawm.
(b) Siv ib qho kev tshem tawm rau sab nraud - Ib qho tshem tawm ntawm lub cev yog ib qho surfactant. Tus neeg raug tshem tawm hauv lub cev tsis muaj peev xwm siv tau los ntxuav lub ntsej muag ntawm qhov ntsuas thiab qhov khoom, thiab hluav taws xob hauv qhov av ntawm qhov khoom yuav raug tshem tawm sai sai.
(c) Tswj lub voj ntawm ib puag ncig - Ua kom cov av noo tuaj yeem ua rau cov khoom siv hluav taws xob tsis zoo, ua rau nyuaj rau qhov khoom siv los mus ua ke hluav taws xob. Piv txwv, nyob rau hauv ib qho chaw qhuav qhuav nyob rau sab qaum teb, muaj peev xwm ntub tau cov av noo thiab cov cua ntsig.
(d) Electrostatic shielding-Siv lub ntaub thaiv npog (cage) rau cov khoom siv rau qhov hluav taws xob zoo thiab zoo av hauv daim ntaub thaiv (lub npoo).
(5) Kev Tswj Txheej Txheem Tswj: Txhawm rau tsim hluav taws xob tsawg li ntau tau ntawm kev tsim cov khoom hluav taws xob, tswj kev txua nyiaj ntawm qhov qub, tshem tawm cov hluav taws xob uas twb muaj lawm, thiab tso tawm tam sim ntawd, ntawm cov qauv tsim, , kev khiav lag luam, kev tswj xyuas, thiab lwm yam.
Electrostatic cov khoom siv tiv thaiv:
(1) Cov tib neeg lub cev los tiv thaiv lub cev muaj xws li tiv thaiv kab xev tiv thaiv, muaj txhua yam, lub kaus mom, hnab looj tes, khau, thom khwm, lwm yam.
(2) Cov khoom siv los tiv thaiv sab nrauv uas muaj qhov av nplaum tiv thaiv kom zoo li qub, qhov chaw pov thaiv los tiv thaiv zoo li qub, PVC los tiv thaiv zoo li qub, cov ntaub pua plag tsev los tiv thaiv.
(3) Los tiv thaiv zoo li qub: nrog rau cov khoom qub: I: rau cov ntaub pua rooj, cov hnab yas los tiv thaiv, cov khoom siv coj los tiv thaiv los ntawm cov khoom qub, cov khoom siv los tiv thaiv thiab cov cuab yeej los tiv thaiv.