Chingwe chotetezedwa kawiri
Chingwe chotchinga pawiri ndi mtundu wapadera wa chingwe chamagetsi chomwe chimapangidwa mwaluso kwambiri kuti chitetezere chitetezo champhamvu kwambiri pamagetsi amagetsi (EMI) ndi kusokoneza kwa ma radio frequency (RFI). Imakhala ndi zigawo ziwiri zodzitchinjiriza - zomwe nthawi zambiri zimakhala zophatikizika bwino za zojambulazo za aluminiyamu ndi zoluka zamkuwa - zomwe zimagwirira ntchito limodzi kuti zitsimikizire kutumiza kwazizindikiro koyera, kodalirika komanso kokhazikika ngakhale pamavuto.
Zingwezi zimagwiritsidwa ntchito kwambiri m'malo okwera kwambiri pomwe phokoso lamphamvu lamagetsi kapena kupotoza kwa ma siginecha kungasokoneze kwambiri magwiridwe antchito, kuphatikiza ma data automation system , data centers , makina a CNC , ndi ntchito zina zolondola kwambiri.
Chifukwa Chake Kuteteza Pawiri Kufunika?
Zingwe zokhala ndi chishango chimodzi zimatha kuyang'anira kusokoneza kofunikira pamakonzedwe ocheperako, koma zishango ziwiri zimakweza chitetezo kumlingo watsopano wodalirika komanso magwiridwe antchito.
Chishango choyamba, chomwe nthawi zambiri chimakhala chopangidwa ndi yopyapyala, yowonda kwambiri aluminiyamu , imatsekereza phokoso lakunja lamagetsi kuchokera kumagwero monga zingwe zamagetsi, ma mota, kapena ma siginecha opanda zingwe. Pakadali pano, gawo lachiwiri , lomwe nthawi zambiri limalukidwa molimba mkuwa , limagwira ntchito ziwiri: limachepetsa kulumikizana kwapakati pakati pa ma conductor oyandikana mkati mwa chingwe ndipo kumathandizira kwambiri kulimba kwamakina ndi kusinthasintha pakupsinjika.
Mapangidwe amitundu iwiriwa amatsimikizira kusasinthika, kutsimikizika kwamphamvu kwa ma siginecha , ngakhale pakugwiritsa ntchito pafupipafupi kwambiri kapena m'malo amakina olemera komwe kugwedezeka, phokoso lamagetsi, ndi kuvala kwathupi kumakhala zovuta nthawi zonse.
Pamene makina amagetsi akuchulukirachulukira komanso odzaza kwambiri - okhala ndi mitengo yayitali kwambiri, zomverera zomverera, ndi zida zolumikizidwa - kufunikira kwa zingwe zotchingidwa pawiri kwadutsa ma automation amakampani, matelefoni, zida zamankhwala, zakuthambo, ndi ma data , kuwapangitsa kukhala ofunikira kwambiri pakudalirika kofunikira.
Kapangidwe ka Chingwe chotetezedwa kawiri
Chingwe chodzitchinjiriza pawiri chimapangidwa ndi njira yolondola, yokhala ndi magawo angapo kuti chiwonjezeke kukhulupirika komanso kulimba. Zigawo zake zikuphatikizapo:
1. Kondakitala
Pachimake nthawi zambiri amapangidwa ndi mkuwa woyengedwa kwambiri (wolimba kapena wosasunthika) kuti atsimikizire kuyendetsa bwino kwa magetsi komanso kutayika kochepa kwa chizindikiro patali.
2. Kusungunula
Dielectric wosanjikiza-kawirikawiri PVC, PE, kapena FEP - amazungulira kondakitala aliyense, kuteteza mabwalo aafupi , kuchepetsa capacitance, ndi kusunga kukhulupirika kwa chizindikiro..
3. Chishango Choyamba
Nthawi zambiri chojambula cha aluminiyamu (nthawi zambiri chimakhala ndi poliyesitala), wosanjikiza uyu amapereka 100% kuphimba bwino kuti aletse kusokoneza kwamagetsi kwamagetsi (EMI) kuchokera kunja.
4. Chishango Chachiwiri
Mkuwa wolukidwa molimba kapena mauna amkuwa (wokhala ndi 65-95%) omwe amayamwa phokoso lotsika pang'onopang'ono , amachepetsa crosstalk mkati , ndikuwonjezera mphamvu zamakina ndi kusinthasintha kwa kupindika mobwerezabwereza kapena kugwedezeka.
5. Jacket Yakunja
Chophimba cholimba, choyaka moto, chosagwira UV, komanso chopanda mafuta (monga PVC, TPE, kapena LSZH ) chomwe chimateteza kutentha, chinyezi, kuphulika, mankhwala, ndi kuwonongeka kwa thupi , kuonetsetsa kudalirika kwa nthawi yaitali m'madera ovuta.
sizimangokulitsa Zomangamanga zapamwambazi kukanidwa kwa EMI/RFI komanso zimatsimikizira moyo wautali komanso magwiridwe antchito osasinthika , ngakhale pamavuto azachuma kapena zachilengedwe.
Kusiyanitsa Kwakukulu Kuchokera ku Chingwe Chotetezedwa Chimodzi
Zingwe zokhala ndi chishango chimodzi zimagwiritsa ntchito wosanjikiza umodzi (kawirikawiri zojambulazo kapena zoluka) pofuna chitetezo cha EMI, choyenera makonda a phokoso lotsika ngati makina omvera kapena mizere yapamtunda waufupi. Zingwe zotchingidwa pawiri, komabe, zimakhala ndi zigawo ziwiri - nthawi zambiri kuphatikiza zojambulazo ndi zoluka - kuti zigwire bwino ntchito. Nachi kufananitsa mwachangu:
Mbali |
Chingwe Chotchinga Chimodzi |
Chingwe Chotetezedwa Pawiri |
Zigawo za Shield |
Chimodzi (mwachitsanzo, zojambulazo kapena zoluka) |
Awiri (mwachitsanzo, zojambula zamkati + zoluka zakunja) |
EMI/RFI Chitetezo |
Wapakati; ogwira m'madera otsika osokoneza |
Pamwamba; abwino kwa malo aphokoso ngati magetsi kapena zida zamakina |
Ntchito Zofananira |
Zomvera, zotsika pafupipafupi, zamagetsi zamagetsi |
Asilikali, zida zamankhwala, maukonde othamanga kwambiri, machitidwe a RF |
Mtengo |
Pansi |
Zapamwamba chifukwa cha zinthu zowonjezera komanso zovuta |
Kusinthasintha |
Nthawi zambiri apamwamba |
Zochepa pang'ono, koma zimasiyana ndi mapangidwe |
Momwe Double shielding imagwirira ntchito
Inner Shield
Nthawi zambiri chojambula cha aluminiyamu kapena chamkuwa (chophimba 100%) chimakulungidwa mozungulira ma conductor, nthawi zambiri chimakhala ndi waya wothirira pansi. Izi zimalepheretsa kusokoneza kwa ma frequency apamwamba.
Outer Shield
Chitsulo cholukidwa (monga 80% chotchinga chamkuwa) pamwamba pa chishango chamkati, chopereka chitetezo chochepa komanso mphamvu zamakina. Zigawozo nthawi zambiri zimakhala zolekanitsidwa ndi magetsi kuti zisagwirizane.
Kuyika pansi
Kuti zigwire bwino ntchito, chishangocho chimakhazikika mbali zonse ziwiri (zochita zamakono), ngakhale ziyenera kuchitidwa mosamala kuti musapewe malupu. Muzochitika zapadera, monga mawaya a ndege, chishango chakunja chimateteza ku mphezi, pamene chamkati chimachepetsa kung'ung'udza kuchokera kumagetsi.
Njira yamitundu iwiriyi imatha kuchepetsa kusokoneza mpaka 90% kapena kupitilira apo poyerekeza ndi zingwe zopanda chitetezo, kutengera ma frequency ndi chilengedwe.
Ubwino waukulu wa Chingwe chotetezedwa kawiri s
Kukana Kwapamwamba Kwambiri
Chotchinga chapawiri-chotchinga cha RFI chokwera kwambiri komanso choluka cha EMI chotsika kwambiri chimatchinga pafupifupi kusokoneza konse kwakunja ndi mkati, kuteteza kutayika kwa ma sign, kupotoza, kapena katangale wa data. Mulingo wachitetezo uwu ndi wofunikira kwambiri pamakina omvera, makina othamanga kwambiri, makina olondola a CNC, ndi zida zoyerekeza zamankhwala.
Kukhalitsa Kukhazikika
Chishango chakunja cholukidwa chimagwira ntchito ngati zida zodzitetezera, zomwe zimakulitsa kwambiri kukana kwa abrasion, kusinthasintha mobwerezabwereza, kuphwanya, komanso kupsinjika kwakanthawi pakuyika, kuyendetsa, kapena kugwira ntchito m'malo osinthika. Izi zimapangitsa chingwecho kukhala choyenera kwa mikono ya robotic, makina osuntha, ndi kutumiza m'munda.
Kupititsa patsogolo Kukhulupirika kwa Signal
Pochepetsa kuphatikizika, kufooketsa, ndi jitter yochititsa phokoso, kutchingira kawiri kumatsimikizira kutumiza kwa ma sigino oyera, okhazikika, komanso odalirika kwambiri pamtunda wautali-ngakhale m'malo osagwirizana ndi magetsi monga mafakitale, malo opangira data, kapena masitudiyo owulutsa.
Moyo Wowonjezera
Kutetezedwa kotheratu ku zovuta zachilengedwe - kuphatikiza EMI, chinyezi, kugwedezeka, ndi kuvala kwamakina - kumatalikitsa moyo wogwira ntchito. Izi zimabweretsa kutsika kwafupipafupi m'malo, kuchepetsa ndalama zokonzera, ndi kutsika kochepa kwa dongosolo, kupereka mtengo wapamwamba kwambiri wa umwini (TCO) m'mafakitale ndi malonda.
Ntchito za D ma Cables Otetezedwa
Zingwe zotchingidwa pawiri ndizofunikira kwambiri m'mafakitale ofunikira kwambiri momwe ma siginecha amamveka bwino, kudalirika, ndi kulondola sikungakambirane. Kutetezedwa kwawo kolimba kwa EMI/RFI kumatsimikizira magwiridwe antchito m'malo ovuta kwambiri. Ntchito zazikuluzikulu zikuphatikiza:
Makina a CNC
Perekani ma siginecha okhazikika owongolera ma mota ndi mayankho olondola kwambiri kuchokera ku ma encoder ndi masensa, kuletsa zolakwika za jitter kapena malo obwera chifukwa cha phokoso lamagetsi kuchokera ku ma servo drive, spindles, kapena makina oyandikana nawo.
Professional Audio/Video Systems
Chotsani malupu, ma hums, buzz, ndi kusokoneza kosasunthika pazojambula pompopompo, masitudiyo owulutsa, makina amawu omvera, ndi malo omvera a digito (DAWs), kusunga kukhulupirika kowoneka bwino kwambiri kuchokera pa maikolofoni kupita ku zotuluka.
Ma network a Telecommunication
Thandizani kuthamanga kwachangu, kopanda zolakwika kwa data ku Ethernet (Cat6/Cat7), makina a msana wa fiber, ndi zomangamanga za 5G, kuteteza motsutsana ndi ma crosstalk ndi ma sigino akunja a RF mumitolo yowundana kapena m'matauni.
Zida Zachipatala
Tetezani zida zowunikira komanso zowunikira - monga MRI, ultrasound, ECG, ndi njira zowunikira odwala - kusokonezedwa ndi ma elekitirodi opangidwa ndi zida zapafupi, kuwonetsetsa kuwerengedwa kolondola komanso chitetezo cha odwala.
Zamlengalenga ndi Chitetezo
Sungani kukhulupirika kosasunthika kwa ma avionics, makina a radar, mauthenga a satellite, ndi magalimoto ankhondo, kumene EMI yoopsa kwambiri kuchokera ku radar, injini, kapena nkhondo zamagetsi zingathe kusokoneza kuyenda, kulunjika, kapena kutetezedwa kwa deta.
Momwe mungayikitsire Chingwe chotetezedwa kawiri
Kusankha chingwe chotetezedwa bwino kumafuna kufananitsa kapangidwe kake ndi zomwe mukufuna kugwiritsa ntchito. Zinthu zofunika kuziwunika ndi izi:
Mtundu wa Chingwe
Sankhani masinthidwe omwe akugwirizana bwino ndi zosowa zanu zamasinthidwe:
· Coaxial ya ma frequency apamwamba a RF kapena ma siginecha amakanema (mwachitsanzo, 50Ω kapena 75Ω impedance).
· Twisted Pair (STP) kuti mutumize deta moyenera pamanetiweki kapena zida.
· Multi-Core pamakina owongolera ovuta omwe amafunikira ma conductor otetezedwa angapo.
Zoteteza & Zomangamanga
Yang'anani zophatikizika za zojambulazo + zoluka — 100% zojambulazo za aluminiyamu zokhala ndi mawonekedwe apamwamba kwambiri komanso zomata zamkuwa zomangika (≥65% zophimba) kuti musamakane komanso kulimba. Pewani chishango chimodzi kapena zoluka zoluka pang'ono m'malo aphokoso.
Kusinthasintha Zofunikira
Pazogwiritsa ntchito zosunthika kapena zamaroboti, sankhani zingwe zopindika kwambiri, TPE kapena ma jekete a silikoni, ndi zoluka zokongoletsedwa zomwe zidavotera mamiliyoni akuzungulira. Kuyika kosasunthika kumatha kugwiritsa ntchito mitundu ya PVC yokhazikika komanso yotsika mtengo.
Mikhalidwe Yachilengedwe
Fananizani jekete lakunja ndi zoopsa zogwirira ntchito:
Kutentha kwambiri : Gwiritsani ntchito FEP kapena PTFE pa -70°C mpaka +200°C.
Kuwonekera kwa chinyezi / mankhwala : Sankhani PUR kapena LSZH yamafuta, madzi, kapena kukana dzimbiri.
· UV / abrasion : Sankhani mitundu yokhazikika ya UV kapena zida zankhondo panja kapena mafakitale.
Kutsata & Miyezo
Tsimikizirani ziphaso monga UL, CE, RoHS, kapena MIL-spec zamafakitale olamulidwa monga azachipatala, zakuthambo, kapena chitetezo.
Kuyika nthawi posankha chingwe choyenera chotetezedwa kawiri-chogwirizana ndi mtundu wa chizindikiro, kupanikizika kwa makina, ndi zovuta za chilengedwe-zimatsimikizira kudalirika kwa nthawi yaitali, kuchepetsa kulephera, komanso kuteteza machitidwe okhudzidwa kuti asasokonezedwe ndi nthawi yopuma.
Malangizo Okonzekera Kuti Mugwire Ntchito Yokhalitsa
Chisamaliro choyenera ndi kukonza mwachangu ndikofunikira kuti muwonjezere moyo wautali komanso kukhulupirika kwa zingwe zotchinga pawiri. Tsatirani njira zabwino izi kuti mupewe kuwonongeka ndikuwonetsetsa kugwira ntchito kodalirika:
Pewani Kupinda Kwambiri Kapena Kupotokola Pakuika Nthawi zonse muzilemekeza utali wopindika womwe watchulidwa wopanga (nthawi zambiri chingwe cha 6–10×). Kupinda mopitirira muyeso kumatha kuthyola chingwe, kung'amba chishango cha zojambulazo, kapena kuwononga ma conductor amkati, kusokoneza chitetezo cha EMI ndikupangitsa kulakwitsa kwazizindikiro.
Ma Cables Asakhale Patali ndi Mphepete Zakuthwa ndi Pamalo Akutentha Zingwe zanjira zisakhale ndi zitsulo, zingwe zonjenjemera, kapena malo otentha (monga ma mota, zotulutsa mpweya). Gwiritsani ntchito zida zodzitetezera, zotchingira m'mphepete, kapena zomangira zozungulira m'malo omwe ali pachiwopsezo chachikulu kuti mupewe kuyabwa, kudula, kapena kusungunula kusungunula , zomwe zimatha kuyambitsa akabudula kapena phokoso.
Yang'anani Nthawi ndi Nthawi Zolumikizira Zovala kapena Zowononga Onani mapulagi, ma jeki, ndi zoyimitsa pakadutsa miyezi 3-6 iliyonse m'malo ovuta. Yang'anani mapini opindika, nyumba zong'ambika, zishango zotayirira, kapena oxidation . Tsukani ndi mowa wa isopropyl ndi burashi yofewa , ndipo sinthani zolumikizira zowonongeka nthawi yomweyo kuti musamavutike kwambiri, maulumikizidwe opanda phokoso..
Gwiritsani Ntchito Zomangira Zachingwe, Makondomu, kapena Mathireyi Poyika Mwaukhondo Ndi Motetezedwa Konzani zingwe zokhala ndi zomangira zosakhala zitsulo, zozungulira mozungulira kapena makina oyang'anira chingwe kuti mupewe kukangana, kutsina, kapena kukwapula. M'mafakitale, gwiritsani ntchito mayendedwe osinthika kapena maunyolo okoka kuti muthandizire kuyenda ndi chitetezo ku fumbi, zinyalala, ndi kupsinjika kwamakina.
Malangizo Owonjezera Ovomereza
1. Lembetsani zingwe kuti muzizindikiritse mosavuta komanso kuti muthane ndi mavuto amtsogolo.
2. Yesani mtundu wa siginecha nthawi ndi nthawi pogwiritsa ntchito TDR, network analyzer, kapena cheki chowunikira pamakina ovuta.
3. Sungani zingwe zotsalira pamalo ozizira, owuma, ophimbidwa momasuka popanda kinks.
Kukonzekera kosasintha, kolingalira bwino kumateteza chitetezo, kumateteza kulephera kwamtengo wapatali, komanso kumapangitsa kuti ma siginecha azikhala abwino nthawi yonse yautumiki wa chingwe, ngakhale pamafakitale, situdiyo, kapena ntchito zakumunda.
