Unonzwa nezveruzha rweRMS uye kutsauka kwakajairwa mumagetsi, pamwe neSNR. Aya mazwi anokubatsira kunzwisisa kuti ruzha rwakawanda sei runokanganisa maseketi ako. Ruzha chiratidzo chisingadiwe. Heino pfupiso yezvinorehwa nemashoko aya:
izwi | tsananguro |
|---|---|
Ruzha rweRMS | Ruzha rweRMS runoratidza kukosha kwechokwadi kwekuchinja kwezviratidzo zveruzha. |
Kutsauka Kwakasiyana | Izvi zvinokuudza kuti zviratidzo zvechiratidzo zvinochinja zvakadii kubva paavhareji. |
Chiratidzo-ku-Ruzha Ratio | SNR inoenzanisa simba rechiratidzo chako neruzha rwekumashure. |
Ruzha rweRMS uye kutsauka kwakajairwa mumagetsi zvinogona kukanganisa zvikuru mashandiro ePCB yako. SNR yakakwira inoratidza kubatana kuri nani uye zvikanganiso zvishoma panguva yekubatanidza. Kusiyana neizvi, SNR yakaderera inogona kutungamira kumaseketi asina kuvimbika uye mhedzisiro yakaipa mukugadzira.
Zvitsva Zvitsva
Ruzha rweRMS runokuudza huwandu hweruzha chaihwo. Runokubatsira kuona kuti ruzha runochinja sei maseketi ako.
Kuchinja-chinja kwakajairwa kunoratidza kuti zviratidzo zvinochinja zvakadii kubva paavhareji. Izvi zvinokubatsira kuziva kuti ruzha runokanganisa sei mashandiro.
Chiyero chepamusoro chesignal-to-noise (SNR) zvinoreva kuti masignals akajeka. Zvinorevawo kuti pane zvikanganiso zvishoma. SNR yakaderera inogona kuita kuti macircuit asashande zvakanaka.
Kuti SNR ive nani, shandisa madhayagiramu emaziso uye ma spectrum analyzers. Zvishandiso izvi zvinokubatsira kuwana nekuderedza ruzha.
Kuisa pasi zvakanaka, kudzivirira, uye kuisa zvikamu zvakanaka zvakakosha. Matanho aya anobatsira kuderedza ruzha uye kuita kuti macircuit ashande zviri nani.
Ruzha rweRMS uye Kutsauka Kwakajairika muMagetsi
Nheyo dzeNhoroondo dzeKuongorora Ruzha
Vanhu vakatanga kudzidza nezveruzha kare kare. Kunyangwe magetsi emazuva ano asati asvika, vanhu vakaita saPythagoras vakadzidza ruzha. Nekufamba kwenguva, zvinhu zvitsva zvakaita kuti pasi rose riwedzere ruzha.
Munguva yeIndustrial Revolution, michina yaigadzira manzwi matsva akawanda. Zvakava zvakaoma kunzwa zvisikwa. Gare gare, Electric Revolution yakaunza nzira dzakawanda dzekugadzira nekushandura manzwi. Vanhu vakaona kuti hupenyu hwaive hwakazara nezviratidzo neruzha.
Heano mamwe ezviitiko zvikuru munhoroondo yeruzha:
Chiitiko Chikuru/Mupiro | Gore | Mufananidzo (mifananidzo) unokosha |
|---|---|---|
Kugadzirwa kwemamita enzwi | 1917 | AT&T, Leo Beranek |
Kugadzirwa kwetransistor | 1947 | John Bardeen, Walter Brattain, William Shockley |
Kuvakwa kwemakamuri asina chinhu | 1920s | EH Bedell (MaLabhoratori eBell) |
Tekinoroji payakavandudzika, kuyera ruzha kwakava kwakakosha zvikuru. Nyika yakachinja kubva pakunyarara kuenda pakunzwa ruzha. Izvi zvakaita kuti kuyera ruzha kuve chinhu chikuru pamagetsi.
Ruzha rweRMS: Tsanangudzo uye Kuverenga
Ruzha rweRMS uye kutsauka kwakajairwa zvinoratidza kuti chiratidzo chisingadiwi chakawanda sei chiri mumasekete ako. RMS zvinoreva kuti "root mean square." Paunoyera ruzha rweRMS, unowana kukosha chaiko kwekuchinja ruzha. Nhamba iyi inokuudza kuti ruzha rwakawanda sei runogona kukanganisa system yako.
Unoshandisa maturusi akakosha kuyera ruzha rweRMS. RMS voltmeter chaiyo inopa kuverenga kwakanaka. MaOscilloscope anoratidza ruzha semafungu uye anokubvumira kuona nzvimbo dzakakwirira nedzakaderera. Waveform analyzers uye spectrum analyzers dzinokubatsira kuyera RMS voltage mune imwe nzvimbo.
Kuti uwane ruzha rweRMS, ita matanho aya:
Tora zviyero zvakawanda zveruzha.
Sikweya chiyero chimwe nechimwe.
Tsvaga avhareji yenhamba dzakapetwa kaviri.
Tora mudzi wechikwere weavhareji iyoyo.
Izvi zvinokupa nhamba imwe chete inoratidza simba reruzha musystem yako. Unoshandisa nhamba iyi kuenzanisa maseketi kana kutarisa kana dhizaini yePCB yako yakakwana.
Kutsauka Kwakajairika: Zvinoreva uye Mashandisirwo
Kuchinja-chinja kwakajairwa ndeimwe nzira yekuyera ruzha. Mumagetsi, zvinoratidza kuti zviratidzo zvakawanda zvinofamba sei kubva paavhareji. Unozviwana nekuenzanisa musiyano kubva paavhareji, kuavhareji, uye kutora square root. Izvi zvinoratidza kuti shanduko dzacho dzakasimba sei.
Kuchinja-chinja kwakajairwa kunoshandiswa neruzha rweGaussian. Ruzha rweGaussian haruna kurongeka uye runoita curve yakaita sebhero. Runobva muzvinhu zvakaita sekupisa muwaya, ruzha rwepfuti, kana mwaranzi yemuviri mutema. Kuchinja-chinja kwakajairwa kunokubatsira kuona kuti ruzha urwu runokanganisa sei chiratidzo chako.
Unoshandisa standard deviation nenzira dzakawanda:
Inobatsira kuyedza nzira dzekutaurirana nekuwedzera ruzha ruchena.
Zvinoratidza kuti ruzha rwakawanda sei runogona kuchinja chiratidzo chako muhupenyu chaihwo.
Zvinokubatsira kugadzira macircuit anoshanda zvakanaka kunyangwe paine ruzha.
Paunogadzira nekugadzira maPCB, unofanirwa kuziva nezveruzha rweRMS uye kutsauka kwakajairwa. Nhamba idzi dzinokubatsira kuwana matambudziko, kugadzira magadzirirwo ari nani, uye kutarisa kana zvigadzirwa zvako zvichishanda zvakanaka. Nekudzidza nezveruzha, unogona kuvaka magetsi akasimba uye akavimbika.
Kuenzanisa Ruzha rweRMS neKutsauka Kwakajairwa
Misiyano mikuru uye Kubatana
Ruzha rweRMS uye kutsauka kwakajairwa zvinoshandiswa mumagetsi. Zvinokubatsira kuona kuti ruzha runokanganisa sei chiratidzo. Ruzha rweRMS runokuudza saizi chaiyo yeruzha rwunochinja mudunhu. Kutsauka kwakajairwa kunoratidza kuti mavalues anofamba sei kubva paavhareji. Pfungwa idzi mbiri dzinoita sedzakafanana, asi hadzina kufanana.
Heino tafura inoratidza kuti dzakasiyana sei:
mamiriro | tsananguro |
|---|---|
Ruzha rweRMS | Inowana root avhareji yeruzha. Kune masaini akatsetseka, inogona kuenderana nekutsauka kwakajairwa. |
Kutsauka Kwakasiyana | Inoratidza kuti mitengo inochinja sei kubva paavhareji. Inoshandiswa munzvimbo dzakawanda, kwete zvemagetsi chete. |
kunyoresa | Ruzha rweRMS runoshandiswa pakushandisa magetsi. Kuchinja-chinja kwemaitiro kunoshandiswa muminda yakawanda. |
Ruzha rweRMS runonyanya kushandiswa pakushandisa magetsi. Kuchinja-chinja kunoshandiswa mumasvomhu, sainzi, uye mainjiniya. Dzimwe nguva, ese ari maviri anopa mhinduro imwechete, sezvakaita kana ruzha rwakajairika.
Ruzha rweRMS runoshandiswa mumagetsi.
Kutsauka kwakajairika kunoshandiswa muhuwandu.
Dzimwe nguva, zvakafanana kana ruzha rwacho rwakajairika.
Ruzha rweGaussian uye Kuenzana kweMetric
Masisitimu mazhinji emagetsi ane ruzha rweGaussian. Ruzha urwu runoita curve yakaita sebhero paunorunyora. Muzviitiko izvi, ruzha rweRMS uye standard deviation zvinoreva chinhu chimwe chete. Zvese zvinoratidza kuti ruzha rwunopararira zvakadii kubva paavhareji.
Ruzha rweRMS ndiyo nzira yakajairika yekutsauka kweruzha mumasaini. Unoda nhamba iyi kuti uwane chiyero chesignal-to-noise. Unopatsanura musiyano uripo pakati pesignal yepamusoro nebackground neRMS noise. Izvi zvinoratidza kuti ruzha rweRMS ne standard deviation zviri padyo sei mumagetsi.
Zvishandiso muDunhu uye PCB Design
Unoshandisa ruzha rweRMS uye standard deviation mumapurojekiti chaiwo. Paunogadzira PCB, unoda ruzha rushoma kuitira kuti chiratidzo chako chive chakajeka. Unogona kushandisa maturusi akaita seNI Multisim kuyedza ruzha. Unogona kutarisa ruzha rwekupisa kubva kuma resistors kana ruzha rwepfuti kubva kuma semiconductors. Unotarisa kana amplifier yako ine signal-to-noise ratio ye100dB. Unoona ruzha rweRMS voltage rwakakwira pane input.
Unotarisawo ruzha pamafrequencies akasiyana. Unoshandisa macurve esimba respectral density kuti uone kuti ruzha runochinja sei. Unoita kuti macircuit eanalog needigital aparadzane kuti amise ruzha kuti rusapararire. Unoshandisa mapuraneti epasi akapatsanurwa kudzivirira ruzha rwedhijitari. Unoisa macapacitor ekuparadzanisa pedyo nemapini emagetsi kuti usefe ruzha rwemafrequencies ane frequency yakakwira.
Unofanira kuderedza ruzha kuti uwane simba rakanaka mumagadzirirwo emasaini akasiyana-siyana.
Unoshandisa simba rakasiyana pamagetsi e analog ne digital.
Unoshandisa grounding yakanaka kumisa matambudziko eruzha.
Unoisa ma capacitor ekuparadzanisa pedyo nemapini emagetsi eIC kuti usefe ruzha.
Kuziva nezveruzha rweRMS uye kutsauka kwakajairwa kunokubatsira kugadzira macircuit ari nani. Unochengetedza chiratidzo chako chakasimba uye ruzha rwakaderera. Magadzirirwo ako ePCB anoshanda zviri nani uye anogara kwenguva refu.
SNR uye Mashandiro eSisitimu
Chii chinonzi SNR muElectronics
Unofanira kuziva kuti ruzha rusingadiwe runokanganisa sei masisitimu ako emagetsi. Chiyero chesignal-to-noise , kana kuti SNR, chinokubatsira kuyera izvi. SNR inokuudza kuti chiratidzo chako chakasimba sei kana tichienzanisa neruzha rwekumashure. SNR yakakwira zvinoreva kuti chiratidzo chako chinoonekwa zvakajeka. SNR yakaderera zvinoreva kuti ruzha runogona kuvanza kana kuchinja chiratidzo chako.
Unogona kuverenga SNR uchishandisa fomura iri nyore. Kutanga, yera avhareji yechiratidzo kana sisitimu yako iri kushanda. Tevere, yera avhareji yeruzha kana sisitimu yadzima kana murima. Wobva wawana kutsauka kwakajairwa kwechiratidzo neruzha. Fomura yacho inoita seiyi:
SNR = (S - D) / σρ
S chiratidzo chepakati chine chiedza kana chiitiko.
D ndiyo avhareji yerima kana kuti baseline value.
σ ndiyo nzira yakajairika yekutsauka kwechiratidzo nechiedza.
ρ ndiyo nhamba yemapikiseti kana mapoinzi aunoyera.
Unoshandisa SNR kutarisa kana sisitimu yako ichigona kutumira kana kugamuchira ruzivo rwakajeka. Kana SNR yakakwira, sisitimu yako inoshanda zvirinani uye inoita zvikanganiso zvishoma. Kana SNR yakaderera, ruzha runogona kukonzera zvikanganiso kana kurasikirwa nedata.
Zvivako zveSNR uye Kuvimbika
Unoda kuti masisitimu ako emagetsi ashande zvakanaka nguva dzese. SNR inokubatsira kuisa miganhu yekushanda kwakavimbika. Munzvimbo zhinji, unoda SNR yeinenge 15 kusvika 20 decibels (dB) kuti ishande zvakanaka. Iyi level inodzivirira ruzha kuti rusakonzere matambudziko akawanda.
Heino tafura inoratidza zviyero zveSNR zvekushandiswa kwakasiyana:
Zvakatipoteredza/Kushandiswa | SNR shoma (dB) |
|---|---|
Enterprise | 35 |
Voice Networks | 25 |
WiFi 7 | Yakakwirira kupfuura mwero wekare wekumhanya kwemagigabit akawanda |
Unogonawo kushandisa mitemo iyi iri nyore:
Kupfuura 40 dB SNR kunokupa chiratidzo chakanaka kwazvo (5 bars).
25 kusvika 40 dB SNR inokupa chiratidzo chakanaka kwazvo (3 kusvika 4 bars).
15 kusvika 25 dB SNR inokupa chiratidzo chakaderera (2 bars).
10 kusvika 15 dB SNR inokupa chiratidzo chakaderera zvikuru (1 bar).
5 kusvika 10 dB SNR zvinoreva kuti hapana chiratidzo.
Kana SNR yako yadzikira pasi pemazinga aya, sisitimu yako inogona kurasikirwa nedata kana kunzwika zvisina kunaka. Unofanira kuchengetedza SNR yakakwira kuti uve nechokwadi chekuti midziyo yako inoshanda nguva dzese.
SNR muWiFi, Audio, uye PCB Assembly
Unoona SNR ichishanda mumasisitimu akawanda epasi rese. Mumagetsi emagetsi anonzwika, unoda kuti SNR ive ne90 dB yeruzha rweHi-Fi. Izvi zvinochengetedza mimhanzi nemanzwi akajeka uye asina ruzha rwekumashure. Unoshandisa zvikamu zvine ruzha rwakaderera uye dhizaini yakanyatsonaka kuti usvike padanho iri.
Kune masisitimu evhidhiyo, unoda SNR yakakwira kuti mifananidzo irambe yakapinza. Kukosha kwe30 dB kana kupfuura kwakakosha pamavhidhiyo e4K. Kana SNR ikadonha, unoona mifananidzo isina kujeka kana mavara asinganzwisisike.
Masisitimu eWiFi anoenderanawo neSNR. MuWiFi 6 neWiFi 7, unoda SNR yakakwira kuti ubatanidzwe nekukurumidza uye zvakagadzikana. Dhizaini yakanaka inogona kuderedza kurasikirwa kweSNR ne6 dB sezvaunobva parouter. Izvi zvinokubatsira kuti uwane kuchengetedzwa kuri nani kwewaya isina waya uye kuti ubatanidzwe zvishoma.
Paunogadzira maPCB, unoshandisa SNR kuwana nekugadzirisa matambudziko. Unoda kuderedza ruzha, kuderedza kurasikirwa kwechiratidzo, uye kuchengetedza kutaurirana pakati pezvikamu kwakasimba. Unogona kushandisa zvishandiso zvakaita semadhayagiramu emaziso, reflectometry yenguva, uye spectrum analyzers kuti utarise SNR. Zvishandiso izvi zvinokubatsira kuona ruzha, kurira, kana masaini asina simba.
Kuchengetedza kuvimbika kwechiratidzo kunosanganisira kubatana kwakaoma kwezvinhu, kusanganisira kuderedza ruzha, kuderedza kuparadzwa kwechiratidzo, uye kuve nechokwadi chekutaurirana kwakavimbika pakati pezvikamu.
Unogona kutevera matanho aya kuti uvandudze SNR mumagadzirirwo ako ePCB:
Shandisa madhayagiramu emaziso kuti utarise kunaka kwechiratidzo.
Edza kutarisisa nguva kuti uwane zvikanganiso.
Shandisa ma spectrum analyzers kuti uone ruzha uye kurira.
Unofanira kuchengetedza SNR yakakwira kuti magetsi ako avimbike. SNR yakanaka inoreva kuti masaini ako anoramba akajeka, ruzha rwako runogara rwakaderera, uye zvigadzirwa zvako zvinoshanda sezvazvinofanira.
Kukosha kweKugadzira uye Kugadzirisa Matambudziko
Kuvimbika uye Kugadzirisa
Unofanira kuziva nezveRMS noise, standard deviation, uye SNR paunenge uchishanda pama electronic systems. Nhamba idzi dzinokubatsira kuwana matambudziko uye kuita kuti magadzirirwo ako ave akavimbika . Kana SNR yakakwira, background noise inoramba yakaderera. Izvi zvinoreva kuti chiratidzo chako chakajeka. Unowana data rinotumirwa pasina zvikanganiso muma communication systems. Unowanawo ruzha nemavhidhiyo zviri nani, izvo zvinoita kuti system yese ishande zviri nani.
Ongororo dzinoratidza kuti kudzidza nezvenzvimbo dzakasiyana dzeruzha uye kuti dzinochinja sei mashandiro adzo kunobatsira kuti magetsi ave akavimbika. Unogona kushandisa ruzivo rweruzha kuti uone kana michina yako yakanaka. Nzira iyi inoshanda zvakanaka pamagetsi uye inokubatsira kuwana matambudziko nekukurumidza.
Zvishandiso zvekuongorora ruzha muPCB Design
Software yemazuva ano inokupa nzira dzakasimba dzekudzora ruzha paunenge uchigadzira maPCB . Unogona kushandisa maturusi akaita seCadence kudzidza nekuderedza ruzha. Mapurogiramu aya ane zvinhu zvinokubatsira kuona kuti ruzha runochinja sei chiratidzo chako nesystem yako.
mamiriro | Kubatsirwa Kwekugadzirisa Ruzha |
|---|---|
Advanced simulation kugona | Inobatsira pakuongorora kudyidzana kwemasisitimu kuti ione matambudziko eruzha. |
Chiratidzo chekuvimbika kuongororwa | Inoongorora mhando yemasaini kudzivirira kubatana kweruzha. |
Kuona kwe3D | Inopa kunzwisisa kwenzvimbo kwezvinhu zvinoderedza ruzha. |
Kutevedzera zviratidzo zvakasiyana-siyana | Inoona matambudziko angangoitika ekubatanidza ruzha uye kuvimbika kwechiratidzo. |
Unogona kushandisa maturusi aya kuyedza dhizaini yako usati waivaka. Unowana matambudziko eruzha woagadzirisa nekukurumidza. Izvi zvinokuchengetedza nguva nemari.
Maitiro Akanakisisa eInjiniya
Unogona kutevera matanho akanakisa ekuderedza ruzha uye kuita kuti system yako ishande zviri nani. Edza mazano aya:
Shandisa mafirita akanaka ezviratidzo, akadai semafirita ane pass yakaderera kana kuti ane high-pass.
Iva nechokwadi chekuti une nzvimbo yakanaka yekudzika nekudzivirira ruzha.
Isa zvikamu newaya zvakanaka kuti zvive zvipfupi uye zvinotonhorera.
Shandisa nzira dzekuderedza ruzha, dzakadai sedhijitari kana kuti adaptive filtering.
Sarudza zvikamu zvakanaka zvinoita ruzha rushoma uye zvisina kukanganiswa zvakanyanya.
Boka zvikamu zvichienderana nezvavanoita kuti vaderedze kunonoka.
Isa zvikamu zvakakosha pakutanga kuti zvibatane zviri nani.
Chengetedza zvikamu zveanalog nedhijitari zvakasiyana kuti udzivise kupindira.
Isa ma capacitor ekuparadzanisa padyo ne ICs kuti usefe ruzha.
Usashandise waya refu, dziri padivi nepadivi kuderedza kukanganiswa.
Shandisa mabhodhi ane zvikamu zvakawanda kuti magetsi arambe akaparadzana uye akasimba.
Unogona kutarisa mienzaniso chaiyo kuti uone kuti mazano aya anobatsira sei. Semuenzaniso:
Case Study | tsananguro |
|---|---|
Kambani yeTerecom X | Yakagadzirwa shield yekumisa crosstalk mu fiber optic networks, zvichiita kuti zvinhu zvifambe zvakanaka. |
Kambani Yekugadzira Y | Kupatsanura masaini kwakashandisa kuderedza kupindira, izvo zvakaita kuti kugadzirwa kukurumidze. |
Indasitiri yeNdege Z | Kuchinja mafrequency ezviratidzo kuti zvideredze kutaura, zvichiita kuti kutaurirana kuve kwakachengeteka uye kwakajeka. |
Unogona kushandisa nzira idzi kuchengetedza ruzha rwakaderera uye chiratidzo chako chakasimba. Magadzirirwo ako achashanda zviri nani uye anogara kwenguva refu.
Unobatsira kuti magetsi ashande zvakanaka nekudzidza nezveruzha rweRMS, standard deviation, uye SNR. Nhamba idzi dzinokubatsira kudzora ruzha uye kuita kuti dhizaini yePCB ive nani. Kugadzika zvakanaka uye dhizaini yakangwara ye stackup zvinogona kuderedza ruzha uye kubatsira kuzadzisa mitemo yeEMC:
nyaya | mhinduro |
|---|---|
Kusagadzikana kwevhu | Shandisa zvibatiso zvakasimba pasi |
Kuunganidzwa kwakashata | Dhizaini yekumisa ruzha rwakanyanya |
Unogona kushandisa maturusi emakombiyuta, zvikamu zviri nani, uye marongero akangwara kuderedza ruzha. Sezvo tekinoroji ichivandudzika, data renguva chaiyo uye kudzidza kwemuchina zvichakubatsira kuwana nekugadzirisa ruzha nekukurumidza.
FAQ
Ndeupi musiyano uripo pakati peRMS noise nestandard deviation?
Ruzha rweRMS runokubatsira kuwana huwandu chaihwo hweruzha rwunochinja mumasekete. Kutsauka kwakajairwa kunokuudza kuti mavalues ari kure zvakadii neavhareji. Dzimwe nguva, nhamba dzese dziri mbiri dzakafanana, kunyanya neruzha rweGaussian mukugadzirisa masaini.
Sei SNR ichikosha mumasisitimu ekutora data?
Unoda SNR yakakwira kuti uwane zviratidzo zvakajeka mumasisitimu edata. Kana SNR yakaderera, ungasaziva ruzivo rwakakosha. SNR yakanaka inokutendera kuti uunganidze data rakarurama uye inoita kuti sisitimu yako ishande zviri nani.
Ruzha runokanganisa sei kunaka kwemufananidzo?
Ruzha runoita semadonhwe kana kuti zvimedu zvisina kurongeka mumifananidzo. Ruzha rwakawanda runoita kuti mifananidzo iite seyakaipisisa. Unogona kuita kuti mifananidzo ive nani nekushandisa mafirita akanaka uye kugadzira converter yako yeanalog-to-digital nokungwarira.
Munoshandisa kupi zvishandiso zvekuyera zvine simba guru?
Unoshandisa maturusi ekuyera anoshanda zvakanyanya mumarabhoritari, mafekitori, nenzvimbo dzekutsvagisa. Maturusi aya anokubatsira kuyera masaini madiki uye kuwana ruzha. Anoita shuwa kuti zvawawana zvakanaka uye zvakavimbika.
Chii chinoshandiswa neanalog-to-digital converter mukudzora ruzha?
Chinoshandura masaini kubva kuanalog kuenda kudhijitari chinoshandura masaini chaiwo kuita data redhijitari. Mashandisirwo akanaka anoderedza ruzha uye anoita kuti masaini arambe akajeka. Danho iri rakakosha zvikuru pakugadzirisa masaini.
