Abenzi boluvo be-analog basetyenziswa kakhulu kushishino olunzima, kushishino olulula, impahla, ezolimo, imveliso kunye nolwakhiwo, imfundo yobomi bemihla ngemihla kunye nophando lwezenzululwazi, kunye nezinye iinkalo. Inzwa ye-analog ithumela umqondiso oqhubekayo, kunye nombane, okwangoku, ukuxhathisa njl, ubungakanani beeparamitha ezilinganisiweyo. Umzekelo, isivamvo sobushushu, isivamvo segesi, isivamvo soxinzelelo njalo njalo zizinto eziqhelekileyo zobungakanani boluvo lwe-analog.
Isivamvo sobungakanani be-analog siya kudibana nokuphazamiseka xa uhambisa imiqondiso, ikakhulu ngenxa yezi zinto zilandelayo:
1.I-Electrostatic induced interference
Ukufakwa kwe-electrostatic ngenxa yobukho be-parasitic capacitance phakathi kweesekethe zesebe ezimbini okanye amacandelo, ukuze intlawulo kwelinye isebe idluliselwe kwelinye isebe ngokusebenzisa i-parasitic capacitance, ngamanye amaxesha eyaziwa ngokuba yi-capacitive coupling.
I-2, ukuphazamiseka kwe-Electromagnetic induction
Xa kukho inductance phakathi kweesekethe ezimbini, utshintsho lwangoku kwisekethe enye zidityaniswa kwenye ngemagnethi, into eyaziwa ngokuba yi-electromagnetic induction. Le meko idla ngokudibana ekusebenziseni izinzwa, kufuneka ihlawule ingqalelo ekhethekileyo.
3, Umkhuhlane ovuzayo kufuneka uphazamise
Ngenxa yokungacoceki kakuhle kwesibiyeli secandelo, i-terminal post, ibhodi yesekethe eprintiweyo, i-dielectric yangaphakathi okanye iqokobhe le-capacitor ngaphakathi kwisekethe ye-elektroniki, ngakumbi ukonyuka komswakama kwindawo yesicelo senzwa, ukuxhathisa kwe-insulator kuncipha, kwaye ke ukuvuza kwangoku kuya kwanda, ngaloo ndlela kubangele ukuphazamiseka. Isiphumo sibi kakhulu xa ukuvuza kwangoku kugeleza kwinqanaba legalelo lesekethe yokulinganisa.
4, Uphazamiseko lwamaza kanomathotholo
Ubukhulu becala ukuphazamiseka okubangelwa ukuqala kunye nokuyeka izixhobo ezinkulu zamandla kunye nokuphazamiseka okuphezulu kwe-harmonic.
5.Ezinye izinto zokuphazamiseka
Ikakhulu ibhekisa kwindawo yokusebenza ehlwempuzekileyo yenkqubo, njengesanti, uthuli, ukufuma okuphezulu, ubushushu obuphezulu, izinto zekhemikhali kunye nokunye okusingqongileyo okurhabaxa. Kwimekobume enzima, iya kuchaphazela kakhulu imisebenzi ye-sensor, njengokuba i-probe ivaliwe ngothuli, uthuli kunye ne-particulate matter, eya kuchaphazela ukuchaneka komlinganiselo. Kwimeko yomswakama ophezulu, umphunga wamanzi unokungena ngaphakathi kwinzwa kwaye ubangele umonakalo.
Khetha asteel stainless probe izindlu, enqabileyo, iqondo lokushisa eliphezulu kunye ne-corrosion resistant, kunye nothuli kunye nokumelana namanzi ukuphepha umonakalo wangaphakathi kwi-sensor. Nangona i-shell ye-probe ayinamanzi, ayiyi kuchaphazela isantya sokuphendula i-sensor, kunye nokuhamba kwegesi kunye nesantya sokutshintshiselana ngokukhawuleza, ukuze kufezekiswe umphumo wokuphendula ngokukhawuleza.
Ngokusebenzisa le ngxoxo ingentla, siyazi ukuba zininzi izinto eziphazamisayo, kodwa ezi ziphelele nje, zithe ngqo kwindawo ethile, zinokuba sisiphumo sezinto ezahlukeneyo zokuphazamiseka. Kodwa oku akuchaphazeli uphando lwethu kwi-analog sensor anti-jamming technology.
Itekhnoloji ye-analog ye-anti-jamming ininzi inokulandelayo:
6.Sheilding Technology
Izikhongozeli zenziwe ngezinto zetsimbi. Isekethe efuna ukukhuselwa ihlanganiswe kuyo, enokuthintela ngokufanelekileyo ukuphazamiseka kombane okanye umbane. Le ndlela ibizwa ngokuba kukukhusela. Ukhuselo lunokwahlulwa lube lukhuselo lwe-electrostatic, i-electromagnetic shielding kunye ne-low frequency magnetic shielding.
(1) I-Electrostatic Shieding
Thatha ubhedu okanye i-aluminium kunye nezinye izinyithi zokuqhuba njengezinto eziphathekayo, yenza isitya sesinyithi esivaliweyo, kwaye udibanise kunye nocingo lomhlaba, ubeke ixabiso lesiphaluka ukuze ukhuselwe kwi-R, ukwenzela ukuba intsimi yombane yokuphazamiseka kwangaphandle ayichaphazeli isiphaluka sangaphakathi, kwaye ngokuchaseneyo, indawo yombane eyenziwa yisekethe yangaphakathi ayiyi kuchaphazela isiphaluka sangaphandle. Le ndlela ibizwa ngokuba yi-electrostatic shielding.
(2) IsiKhuseli soMbane
Kwintsimi yemagnethi yophazamiseko oluphezulu, umgaqo we-eddy yangoku usetyenziselwa ukwenza uphazamiseko oluphezulu lwe-electromagnetic field luvelise i-eddy yangoku kwintsimbi ekhuselweyo, edla amandla ophazamiseko lwemagnethi, kunye nendawo yemagnethi yangoku irhoxisa indawo ephezulu. uphazamiseko lwamaza ombane wemagnethi, ukuze isekethe ekhuselweyo ikhuselwe kwiimpembelelo zentsimi ye-electromagnetic field. Le ndlela yokukhusela ibizwa ngokuba yi-electromagnetic shielding.
(3) UkuKhusela iMagnetic yeFrekhwensi ePhantsi
Ukuba i-low-frequency field magnetic, i-eddy yangoku yenzeke ayibonakali ngeli xesha, kwaye i-anti-interference effect ayilungile kakhulu ngokusebenzisa le ndlela ingentla. Ke ngoko, imathiriyeli yemagnethi ephezulu kufuneka isetyenziswe njengomaleko okhuselayo, ukuze kuncitshiswe umgca wokungeniswa kwemagnethi esezantsi-frequency ngaphakathi kwendawo ekhuselayo yamagnetic enokumelana okuncinci kwamagnetic. Isekethe ekhuselweyo ikhuselwe kwi-low frequency magnetic coupling interference. Le ndlela yokukhusela iqhele ukubizwa ngokuba yi-low frequency magnetic shielding. Iqokobhe lentsimbi lesixhobo sokubona inzwa lisebenza njengekhaka eliphantsi lemagnethi. Ukuba isekelwe ngakumbi, ikwadlala indima yokukhusela i-electrostatic kunye nokukhusela i-electromagnetic.
7.Grounding iteknoloji
Yenye yeendlela ezisebenzayo zokucinezela ukuphazamiseka kunye nesiqinisekiso esibalulekileyo sobuchwephesha bokukhusela. Isiseko esichanekileyo sinokucinezela ngokufanelekileyo ukuphazamiseka kwangaphandle, ukuphucula ukuthembeka kwenkqubo yokuvavanya, kunye nokunciphisa izinto eziphazamisayo eziveliswa yinkqubo ngokwayo. Injongo yokumisa phantsi kubini: ukhuseleko kunye nokunyanzeliswa kokuphazamiseka. Ngoko ke, ukumisa phantsi kuhlulwe kwisiseko sokukhusela, ukukhusela umhlaba kunye nokumisela umqondiso. Ngenjongo yokhuseleko, i-casing kunye ne-chassis yesixhobo sokulinganisa inzwa kufuneka isekelwe. Umhlaba womqondiso wahlulwe kumhlaba we-analog kunye nomhlaba wedijithali, umqondiso we-analog ubuthathaka ngokubanzi, ngoko ke iimfuno zomhlaba ziphezulu; isignali yedijithali yomelele ngokubanzi, ngoko iimfuno zomhlaba zinokuba ngaphantsi. Iimeko ezahlukeneyo zokubona inzwa nazo zineemfuno ezahlukeneyo kwindlela eya emhlabeni, kwaye indlela efanelekileyo yokumisa kufuneka ikhethwe. Iindlela eziqhelekileyo zokubeka phantsi zibandakanya i-point-point grounding kunye ne-multi-point grounding.
(1) Isiseko senqaku elinye
Kwiisekethe ezisezantsi, kucetyiswa ngokubanzi ukuba kusetyenziswe indawo enye, enomgca wokumisa i-radial kunye nomgca wokumisa ibhasi. I-radiological grounding ithetha ukuba isekethe nganye esebenzayo kwisekethe iqhagamshelwe ngokuthe ngqo kwindawo yereferensi ye-zero enokubakho ngeengcingo. I-Busbar grounding ithetha ukuba abaqhubi bezinga eliphezulu kunye nommandla othile we-cross-sectional basetyenziswa njengebhasi yokumisa, edibaniswe ngokuthe ngqo kwindawo enokubakho i-zero. Umhlaba webhloko nganye esebenzayo kwisekethe unokudibaniswa nebhasi ekufutshane. Iinzwa kunye nezixhobo zokulinganisa zenza inkqubo yokubona epheleleyo, kodwa zinokuba kude.
(2) Isiseko samanqaku amaninzi
Iisekethe ze-high-frequency circuits zicetyiswa ngokubanzi ukuba zamkele i-multi-point grounding. I-frequency ephezulu, kwanexesha elifutshane lomhlaba liya kuba nokuhla kwamandla ombane amakhulu, kunye nefuthe le-capacitance esasaziweyo, into engenakwenzeka yendawo enye, ngoko ke ingasetyenziselwa uhlobo olusicaba lokumisa indlela, eyile indlela yokubeka umhlaba, usebenzisa i-conductive elungileyo ukuya kwi-zero. indawo enokubakho yesalathiso kumzimba wenqwelomoya, isekethe ephezulu yamaza ukuqhagamshela kwinqwelomoya ekufutshane eqhubayo emzimbeni. Ngenxa yokuba i-impedance ephezulu yomzimba wenqwelomoya incinci kakhulu, amandla afanayo kwindawo nganye aqinisekisiwe, kwaye i-bypass capacitor yongezwa ukunciphisa ukuhla kwamandla ombane. Ke ngoko, le meko kufuneka yamkele imowudi yokumisa amanqaku amaninzi.
8.Iteknoloji yokucoca
Isihluzi yenye yeendlela ezisebenzayo zokucinezela uphazamiseko lwemowudi yesiriyali ye-AC. Iisekethe zokucoca eziqhelekileyo kwisekethe yokufumanisa i-sensor ziquka i-RC filter, i-AC yamandla yokucoca kunye nesihluzo samandla sangoku.
(1) Isihluzi se-RC: xa umthombo wesignali uyisivamvo esinotshintsho olucothayo olufana ne-thermocouple kunye ne-strain gage, i-RC engabonakaliyo yokucoca kunye nomthamo omncinci kunye neendleko eziphantsi ziya kuba nefuthe elingcono lokuthintela kwi-series mode interference. Kufuneka kuqatshelwe, nangona kunjalo, ukuba izihluzi ze-RC zinciphisa ukuphazamiseka kwemodi yochungechunge ngeendleko zesantya sokuphendula inkqubo.
(2) Isihluzi samandla e-AC: uthungelwano lwamandla lufunxa iintlobo ngeentlobo zengxolo ephezulu nephantsi, edla ngokusetyenziswa ukucinezela ingxolo exutywe nesihluzo samandla seLC.
(3) Isihluzi samandla eDC: Ubonelelo lwamandla eDC luhlala lukwabelwana ngeesekethe ezininzi. Ukuze ugweme ukuphazamiseka okubangelwa yimijikelezo emininzi ngokuchasana kwangaphakathi konikezelo lwamandla, i-RC okanye i-LC decoupling filter kufuneka yongezwe kumbane we-DC wesekethe nganye ukuhluza ingxolo ye-low-frequency.
I-9.Iteknoloji yokudibanisa i-Photoelectric
Inzuzo ephambili yokudibanisa i-photoelectric kukuba inokuthintela ngokufanelekileyo i-pulse ye-peak kunye nazo zonke iintlobo zokuphazamiseka kwengxolo, ukwenzela ukuba i-signal-to-noise ratio kwi-transmission transmission process iphuculwe kakhulu. Ingxolo yokuphazamiseka, nangona kukho uluhlu olukhulu lwamandla ombane, kodwa amandla amancinci kakhulu, anokwenza kuphela umsinga obuthathaka, kwaye igalelo le-photoelectric coupler igalelo le-diode elikhuphayo lisebenza phantsi kwemeko yangoku, isikhokelo jikelele sombane we-10 ma ~ 15 ma, ngoko ke nokuba kukho uluhlu olukhulu lokuphazamiseka, ukuphazamiseka kuya kukwazi ukubonelela ngoku okwaneleyo kunye nokucinezelwa.
Jonga apha, ndiyakholelwa ukuba sinokuqonda okuthile kwimiba ye-analog sensor interference factor kunye neendlela zokuchasana nokuphazamiseka, xa usebenzisa i-analog sensor, ukuba ukwenzeka kokuphazamiseka, ngokutsho kumxholo ongasentla uphando olunye, ngokwemeko yokwenyani. thatha imilinganiselo, akufuneki ukuba iqhubeke ingaboni, ukuphepha umonakalo kwinzwa.
Ixesha lokuposa: Jan-25-2021
