Hobaneng u Khetha Fiber Optic Slip Ring?

Masale a Fiber optic slip a fetisa mats'oao a mahlo libakeng tse pota-potileng ntle le ho ama 'mele, e leng se etsang hore e phahamele liring tsa motlakase bakeng sa-bandwidth, EMI{1}}lisebelisoa tse bobebe. Li felisa ho roala ha mechine, li tšehetsa litekanyetso tsa data tse fetang 100 Gbps, 'me li sebetsa ka botšepehi libakeng tseo ho tsona lisebelisoa tsa motlakase li hlōlehang.

Mehele e thellang ea motlakase e tobane le bothata ba mantlha ba fisiks. Ha o fana ka-matla a hodimo ka borashe ba mmele-le-le likhokahano tse llang, o loantšana le bothata ba motlakase, ho kena-kenana le motlakase, le ho senyeha ha mechine. Likhokahano lia senyeha, boleng ba matšoao boa theoha, 'me linako tsa tlhokomelo lia khutsufatsoa.

Masale a Fiber optic slip a rarolla sena ka ho sebelisa phetiso ea leseli ka tsela e sa amaneng le ea optical. Lisebelisoa tsa hajoale tsa mehala ea ho thella li na le bothata ba ho se lekane, mefokolo ea boholo, le mathata a nako e telele, haholoholo ka lebelo le phahameng la ho potoloha. Mmaraka o kopaneng oa fiber optic rotary o fihlile ho $325.6 milione ka 2024 mme o hola ka 11.5% selemo le selemo ho fihlela ka 2031, o tsamaisoa ke lits'ebetso moo lits'ebetso tsa motlakase li sa khoneng ho qothisana lehlokoa.

Phapang e bohlokoa haholo ha bophahamo ba data bo fetoha bo bohlokoa. Siling e le 'ngoe- ea fiber optic slip ring e khona ho sebetsana le li-bandwidth tse ka hlokang li-circuits tse ngata tsa motlakase, tse sebetsang ka maqhubu a pakeng tsa 1,270 nm le 1,650 nm ka tahlehelo e fokolang ea mats'oao.

fiber optic slip ring

Lithapo tsa fiber optic ka tlhaho ha li na tšitiso ea motlakase 'me ha li hloke ho itšehla thajana kapa ho itšehla thajana. Li ka beoa ka kotloloho haufi le likhoele tsa motlakase ntle le ho senyeha ha matšoao. Bakeng sa lisebelisoa tsa radar, likoloi tsa sesole, le lisebelisoa tsa ho nka litšoantšo tsa bongaka tse sebetsang libakeng tse lerata la motlakase, sena ha se bonolo feela-ke sepheo sa bohlokoa{3}}.

Nahana ka setsi sa radar se ka har'a sekepe sa metsing. Mehele e thellang ea motlakase tikolohong eo e tobana le EMI e sa khaotseng ho tsoa lits'ebetsong tsa propulsion, lisebelisoa tsa puisano le lisebelisoa tsa libetsa. Sesepa sa fiber optic slip se boloka botsitso ba matšoao ho sa tsotelehe moferefere oa motlakase o o potileng.

Lits'oants'o tsa data li fetisa ka lebelo le tloaelehileng la 100 Gbps holim'a li-fiber optic rotary joints, ka phetiso ea data e sa angoeng ke EMI ho tsoa maqhubu a phahameng. Li-fiber optic slip rings li tšehetsa litefiso tsa data ho fihla ho 10 Gbit bakeng sa phetisetso e le 'ngoe-le{4}}ea mefuta e mengata.

Moelelo o sebetsang: o ka nkela liteishene tse ngata tsa matšoao a motlakase ka mocha o le mong oa optical. Litheknoloji tsa multiplexing tse kang wavelength-division multiplexing li lumella mats'oao a mangata a ikemetseng hore a fetisoe ka nako e le 'ngoe ka fiber e le' ngoe, e 'ngoe le e 'ngoe ka bolelele bo fapaneng. Sena se fokotsa boholo ba 'mele le ho rarahana ha reng e thellang.

Masale a Fiber optic slip a sebetsa ho latela{0}}mehato eo e seng ea khokahanyo, e fanang ka bophelo ba ts'ebetso bo fetang limilione tse 100 ha ho bapisoa le liphetohelo tse limilione tse 2-3 bakeng sa mefuta ea likanale tsa matšoao a motlakase. Ho ba sieo ha borashe ba 'mele ho bolela hore ha ho na ho futhumatsa likhohlano, ho se be le li-arcing tsa motlakase, le ho senyeha ha ts'ebetso butle butle.

Litsamaiso li etselitsoe lebelo la ho potoloha la 15,000 RPM le holimo, ho etsa hore li tšoanelehe bakeng sa lits'ebetso tse nang le litlhoko tse feteletseng tsa mojaro oa mochini. Ka lebelo lena, likhokahano tsa borashe tsa motlakase li ne li tla hloleha ka potlako, empa phetiso ea optical e lula e tsitsitse.

Masila a le 'ngoe-a kanale a faeba optic slip hangata a etsa tahlehelo ea ho kenya 0.5 dB feela, ka tahlehelo ea ho kenya (wow) ka tlase ho 0.25 dB nakong ea ho potoloha. Ha ho bapisa, tahlehelo ea ho kenya 3 dB e emetse 50% tahlehelo ea matla-ho 0.5 dB, u boloka ho feta 89% ea matla a mats'oao.

Ts'ebetso ea tahlehelo ea ho khutlisa ea 40 dB e tloaelehile bakeng sa likaroloana tsa passive fiber optic, 'me likhetho tsa premium li fihla ho 50-60 dB. Boemo bona ba ts'ebetso bo netefatsa hore lits'ebetso tse thehiloeng ho laser, haholo-holo tse tsotellang likhalase tsa optical, li sebetsa ntle le ho feto-fetoha ha pono kapa jitter ea matla.

Li-rings tsa fiber optic slip li fihlella sehlopha sa ts'ireletso sa IP51 joalo ka maemo a tlase, ka likhetho tse fihlang ho IP69 bakeng sa tikoloho e thata. Matlo a entsoeng ka tšepe e sa hloekang kapa aluminiamo a hana ho bola le tikoloho e mabifi. Bakeng sa ts'ebetso ea ka tlas'a metsi, mefuta e nang le metsi-e tlatsitsoeng ka metsi e fana ka matšeliso le ho boloka index ea refractive e nepahetseng.

Seseteme ha e tsamaise motlakase 'me ha e khone ho baka mollo-e leng molemo oa bohlokoa oa polokeho libakeng tse phatlohang kapa libakeng tse nang le-matla a phahameng.

Lisebelisoa tse ling li tlohile moeling moo mekhoa e meng ea motlakase e seng e sa sebetse. Qeto ha e sa le mabapi le khetho{1}e mabapi le litlhoko tsa tekheniki.

Phatlalatso{0}e Phahameng ea Lifitio:Lisebelisoa tse hlokang phepelo ea video ea HD khafetsa nakong ea ho potoloha-liroboto, sefofane, lisebelisoa tsa bongaka, le liindasteri tsa othomathike{1}}li itšetlehile ka liring tsa fiber optic slip bakeng sa li-bandwidth tse hlokahalang. Phallo ea video ea 4K ho 60fps e hloka hoo e ka bang 12 Gbps. Li-rings tsa motlakase li loantšana le litekanyetso tsena tsa data, haholo-holo liteishene tse ngata.

Litsamaiso tsa Sesole le Tšireletso:Lipuisano tsa satellite le ts'ebeliso ea sesole li holisa 'maraka haholo, ka liroboto tse emelang karolo ea{0}}e ntseng e hola ka potlako. Sistimi ea tataiso ea li-missile le likoloi tse tsamaisoang hole (ROVs) li sebelisa mehele ea fiber optic slip ka ho khetheha ho qoba ho roala ha mochini. Ha ho hloleha ha sistimi ho sa amoheloe, phetisetso e se nang mabitso e ea tlama.

Sets'oants'o sa Bongaka:Lisistimi tsa Optical coherence tomography (OCT) li itšetlehile ka li-fiber optic rotary joints bakeng sa litšoantšo tse tsoelang pele- tse phahameng. Lisebelisoa tsena li hloka li-bandwidth tse phahameng le mats'oao a tsitsitseng{2}}litlhaloso tse hlalosang boleng ba fiber optic.

Li-Sensors tsa Indasteri mabapi le Thepa e Potolohang:NASA's Propulsion Instrumentation Working Group e hlokometse hore ho hlokahala hore ho nkeloe sebaka sa litsamaiso tsa mehala ea ho thella ka mehala e meng eo e seng{0}}makhokahano bakeng sa mathata a tikoloho le tlhokomelo lits'ebetsong tsa tlhahlobo ea enjine. Ha u sebelisa li-blade tsa turbine kapa li-assemblies tse potolohang mochesong o feteletseng, phetiso ea optical e felisa mekhoa e mengata ea ho hloleha.

Ho khetha pakeng tsa-mokhoa o le mong le{1}}faeba e mengata ho ama tšebetso, litšenyehelo, le ho lekana ha lisebelisoa.

Maqhubu a mofuta o le mong- a na le boholo bo bonyenyane ba mantlha (li-micron tse 9) le liphahlo tsa lipalo, tse nolofalletsang maqhubu a phahameng haholo a maqhubu a pakeng tsa 1,270 nm le 1,650 nm. Li hloka tlhophiso e nepahetseng ea mochini ho ipapisitse le bolelele ba maqhubu a ts'ebetso. Likhoele tse ngata-li na le li-cores tse kholo le li-apertures tsa linomoro tse lumellang mefuta e mengata ea matla a mahlo, e leng se etsang hore li fokotsehe le ho hasana, e leng se etsang hore li tšoanelehe bakeng sa lihokelo tse khutšoane tsa datacom ho 850 nm le 1,300 nm wavelengths.

Molao o sebetsang: mokhoa o le mong-bakeng sa-bohole bo bolelele,{2}}bophahamo bo phahameng, likhokahano{3}likopo tsa maemo a holimo. -mekhoa e mengata bakeng sa libaka tse khuts'oane moo ho nepahala le litšenyehelo li leng bohlokoa ho feta bandwidth ea mantlha.

Mefuta e mengata-ea kanale ea faeba optic slip rings e tobane le ho rarahana ho hoholo ka lebaka la bophara bo bonyenyane haholo ba fiber (9 nm bakeng sa-mode e le 'ngoe), e hlokang ho nepahala ho ikhethang. Litlhophiso-tse ngata hangata li sebelisa -phetiso ea mekhoa e mengata ka lebaka la mathata ana a ho tsamaisa liteishene.

Phapang ea litšenyehelo e bohlokoa. -lisebelisoa tse ngata li boloka litšenyehelo li le molemo ho feta{2}}mekhoa e le 'ngoe feela, le hoja lekhalo le fokotseha ha -mekhoa e le 'ngoe ea tharollo e ntse e ata.

Theko ea pele ea mehele ea fiber optic slip e feta mefuta e meng ea motlakase ka 3-5x. Empa litšenyehelo tse felletseng tsa beng li bua pale e fapaneng.

Katoloso ea Nako ea Tlhokomelo:-ho se kopane le batho le nako e telele ea bophelo ho feta liphetohelo tse limilione tse 100 ho fetoleloa ho fokotsehile haholo linakong tsa tlhokomelo. Masale a motlakase a thellang a hloka ho nchafatsoa khafetsa ka borashe, ho hloekisa mabitso le tlhahlobo ea ts'ebetso. Sistimi ea Fiber optic e sebetsa ho fihlela ntlo kapa thepa e hloleha -eseng ho senyeha ha matšoao.

Phokotso ea Nako ea Nako ea Sisteme:Ketsahalo e 'ngoe le e' ngoe ea tlhokomelo e na le litšenyehelo tse patehileng: ho emisoa ha tlhahiso, mosebetsi oa litsebi, lisebelisoa tsa likarolo tse ncha, le ho nchafatsa tsamaiso. Ha selikalikoe sa fiber optic se eketsa nako ea tlhokomelo ka 50x, litšenyehelo tsena li batla li nyamela.

Khokahano ea Channel:Multiplexing e lumella phetiso ea matšoao a mangata ho fiber e le 'ngoe. Haeba u nkela likanale tse 12 tsa motlakase sebaka ka likanale tse 2 tsa fiber, u fokotsa ho rarahana ha 'mele, nako ea ho kenya, le boiteko ba nakong e tlang ba ho rarolla mathata.

Taolo ea Lithapo:Lithapo tsa fiber optic tse fanoang ka bolelele bo tloaelehileng li fokotsa tšitiso ea matšoao. Linyehelo tse tloaelehileng li kenyelletsa bolelele ba 300mm mahlakoreng ka bobeli a rotor le stator, ka bolelele ba tloaelo bo fumanehang ho etsa thapo e le 'ngoe e tsoelang pele ho tloha mohloling ho ea moo ho eang teng. Hangata litsamaiso tsa motlakase li hloka lintlha tse ngata tsa khokahano, e 'ngoe le e' ngoe e hlahisa ho hanyetsa le mekhoa e ka bang teng ea ho hloleha.

Phapanyetsano-e ipapisitse le bohlokoa ba kopo ea hau. Bakeng sa litsamaiso moo litšenyehelo tsa nako ea ho theoha li fetang $10,000 ka hora, nako ea ho lefa e ka ba likhoeli. Bakeng sa lits'ebetso tse fokolang haholo, e ka nka lilemo tse 'maloa.

fiber optic slip ring

Masale a Fiber optic slip ha se plug-le-tharollo ea ho bapala. Ho utloisisa liphephetso tsa boenjiniere ho u thusa ho rala litsamaiso tse sebetsang hantle.

Sensitivity ea Optical Alignment:Ho se tsamaisane hantle kapa sebopeho se fosahetseng sa mahlo se baka mathata a mangata: tahlehelo ka maqhubu a phahameng, polarization e phahameng-dependent loss (PDL), high polarization mode dispersion (PMD), le crosstalk ka har'a-liteishene tse ngata. Ho boloka tahlehelo e tlase ea ho kenya le tahlehelo e tlase ea ho khutla ho pholletsa le mefuta e mengata ea lebelo la ho potoloha ho hloka tlhophiso e nepahetseng, mamello e tiileng ea tlhahiso, le lisebelisoa tse pepeneneng ho maqhubu a ts'ebetso.

Tharollo e sebetsang: sebetsa le bahlahisi ba nang le boiphihlelo sehlopheng sa hau sa kopo. Optical alignment ha se ntho e ka ntlafatsoang ka mor'a ho kenya{1}}e laotsoe ke moralo oa ka hare oa slip ring.

Taolo ea Katoloso ea Thermal:Li-coefficients tse tloaelehileng tsa katoloso ea mocheso oa 10⁻⁵/℃li bolela hore mocheso o sebetsang oa 100℃o eketsa 1mm ka sehlomathiso sa 1m. Motsamao ona o fetola pono ea optical ntle le haeba moralo o o amohela. {6}Meralo ea boleng bo holimo e kenyelletsa mekhoa ea ntlafatso le mats'eliso a mocheso.

Phello ea Khetho ea Sehokelo:Pigtail{0}}li-ring slip rings tse felisitsoeng li fana ka litšobotsi tse phetoang hangata ho feta mokelikeli-liphetolelo tse felisitsoeng. Lihokelo tse nang le phoso liphetolelong tsa pigtail li ka lokisoa, athe bofokoli ba mehala e ka ba bo ke keng ba lokisoa. Mokhoa oa ho kenya lisebelisoa o tla le lits'ebetso le ts'epahalo ea khoebo-.

Ka-Litlhoko tsa Hole:Ho rala masale a "passive fiber optic slip rings" a nang le-masoba ho rarahane haholo ebile ho phephetsa. Boholo ba linyehelo tse tloaelehileng tsa khoebo ha li kenyelle tsona. Haeba kopo ea hau e hloka ho fetisa li-shafts, lithapo tsa hydraulic, kapa matla a motlakase bohareng, hlakisa tlhoko ena pele ho nako{{3}e ama ho rarahana ha moralo le litšenyehelo haholo.

Ho tloaelehile ho kopanya phetiso ea fiber le mehele ea motlakase e thellang, manonyeletso a rotary RF, kapa li-fluid rotary joints, ka karolo ea fiber optic setsing sa sistimi kaha bophara ba eona hangata bo lekanya boholo ba kakaretso. Masale a Hybrid optic slip ring a fetisetsa mats'oao a khanya le matla a motlakase ka nako e le 'ngoe, ho rarolla phephetso ea ho matlafatsa li-converter tsa motlakase ka lehlakoreng le bilikang.

Sisteme e ka kenyelletsa ho fihla ho 72 phepelo ea motlakase-ka holim'a likanale tsa fiber optic. Reng e 'ngoe le e 'ngoe e tšoara 5-10 amps ho 440 VAC/DC, e nang le likhokahano tsa khauta- tsa khauta bakeng sa ho tsamaisa matshwao a motlakase.

Molemo oa kaho: o fumana kopano e le 'ngoe e kopantsoeng ho e-na le ho bokella mehele e arohaneng ea optical le ea motlakase. Sena se fokotsa bolelele ba sistimi ka kakaretso, se nolofatsa ho kenya, le ho felisa mathata a ho tsamaisana lipakeng tsa likarolo tse arohaneng.

Tlhokomelo ea moralo: Linonyello tse nyane tsa fiber optic rotary li fokotsa litšenyehelo tsa sistimi eohle e nyalisitsoeng, kaha bophara ba karolo ea optical hangata bo tsamaisa boholo ba sistimi.

FORJs e ipabola ka lilepe tse nang le RPM e phahameng ka ho ikhethang le moo tahlehelo ea data ho tsoa ho hanyetsa motlakase e bang bothata. Sistimi e fuoe lintlha tse 15,000+ RPM e sebetsa ka bots'epehi lits'ebetsong tsa turbine tsa moea tse nang le litlhoko tse phahameng tsa mochini. Tikoloho ea motlakase ea nacelle ho tsoa phepelong ea matla e etsa hore ts'ireletso ea EMI e be bohlokoa haholo.

Sistimi ea liroboto e emetse-karolo ea ts'ebeliso e ntseng e hola ka potlako, 'maraka oa Asia Pacific o hola ho 13.5% CAGR. Liroboto tsa indasteri li hloka phepelo e tsoelang pele, e phahameng{3}ya bandwidth e phahameng bakeng sa litsamaiso tsa pono, lisensara, le matshwao a taolo. Li-slip rings tsa Fiber optic li thusa{5}}kabelo ea nako ea sebele ntle le ho senyeha ha mats'oao nakong ea ho potoloha.

Likoloi tse sebetsang hole li sebelisa mehele ea fiber optic slip bakeng sa ts'ebetso e tsoelang pele ha e ntse e qoba tšenyo ea mochini. Ho thibela metsi le khatello ea khatello ke lintlha tsa bohlokoa. Mokelikeli{{2}mefuta e tlatsitsoeng ka metsi e fana ka matšeliso, ho tlotsa, le index ea refractive e nepahetseng. Litekanyetso tse tloaelehileng tsa tšireletso li fihla ho IP68 bakeng sa lits'ebetso tse ka tlas'a metsi.

Chelete ea ts'ireletso ea lefats'e e eketsa tlhoko ea theknoloji e tsoetseng pele makaleng a sesole le a sefofane. Ka Loetse 2021, SPINNER e ile ea tsebisa 109-channel fiber optic rotary joint e etselitsoeng lits'ebetso tsa offshore le FPSO. Seseteme ea sesole ea radar,{5}likhamera tse kentsoeng koloing, le likhokahano tsa sathelaete li hloka phetiso e sa sitisoeng ea mats'oao a phahameng ao lisistimi tsa optical feela li ka fanang ka tsona ka ts'epo.

Li-fiber optic slip rings li sebetsa ka liphetoho tse fetang limilione tse 100 ka lebaka la{1}}ho se fetisoe ke likhokahano le ho ba sieo ha likhohlano, ha ho bapisoa le 2-liphetoho tse limilione tse 3 bakeng sa mefuta ea likanale tsa motlakase. Ts'ebetsong e tsoelang pele ho 1,000 RPM, hoo e ka bang lilemo tse 190 bakeng sa fiber optic ha e bapisoa le lilemo tse 3-6 bakeng sa motlakase-le hoja lisebelisoa tse ling li ne li tla hlōleha pele.

Masale a hloekileng a faeba optic a fetisa matšoao a optical feela. Meetso ea Hybrid e kopanya likhoele tsa rotary tsa fiber optic le mehele e thellang ea motlakase ho fetisa mats'oao a khanya le matla a motlakase ka nako e le 'ngoe. Tse ling tsa FORJs li ka fetisetsa matla le data ka bobeli ho li-interfaces tse potolohang, li fana ka matla a motlakase ho likarolo tse potolohang tse kang li-motor kapa li-sensor.

Maqhubu a mofuta o le mong-a nang le 9{{5}micron cores a fana ka maqhubu a phahameng haholo lipakeng tsa 1,270-1,650 nm wavelengths bakeng sa{12}}maqhubu a malelele, a likhokahano. -likhoebo tse ngata tse nang le li-cores tse kholoanyane li lumellana le lihokelo tse khutšoane tsa datacom ho 850 nm le 1,300 nm. Khetha{17}}mokhoa o le mong bakeng sa sebaka se fetang limithara tse 500 kapa litefiso tsa data tse ka holimo ho 10 Gbps. Khetha mefuta e mengata bakeng sa lits'ebetso tse sa tsotelleng litšenyehelo tse tlase ho limithara tse 300.

Tahlehelo ea ho kenya 3 dB e lekana le 50% e fetisoang tahlehelo ea matla a optical. FORJs{{3}chane e le 'ngoe hangata e fumana tahlehelo ea 0.5 dB, e nyolohelang ho 3 dB bakeng sa litiisetso tse peli le{6}} tse ngata. Tahlehelo e tsoa ho pono e fosahetseng ea optical, tšilafalo e holim'a likhoele, le likhakanyo tsa maqhubu. Bothata bo ka sehloohong ke ho boloka tahlehelo e tlase ea ho kenngoa le ho khutlisa ho feta mefuta e mengata ea lebelo la ho potoloha ka ho lumellana hantle le lisebelisoa tse nepahetseng.

Qeto ea ho khetha mehele ea fiber optic slip e itšetlehile ka hore na litlhoko tsa kopo ea hau li feta bokhoni ba tsamaiso ea motlakase. Ha lintlha tsa data li nyolohela ka holimo ho 1 Gbps, ha ho kena-kenana le motlakase ho ba le bothata, ha nako ea ho lokisa e hloka ho atolosoa haholo, kapa ha ts'epahalo ea sistimi e se{2}}e sa buisanoeng-ea theknoloji ea fiber optic e tloha ho khetho ea pele ho ea ho ntho e hlokahalang.

Ha 'maraka o ntse o hola ho tloha ho $325.6 milione ka 2024 ho isa ho $697.6 milione ka 2031 ho 11.5% CAGR, e tsamaisoang ke liindasteri tsa liindasteri, likhokahano tsa sathelaete, le lits'ebetso tsa sesole, theknoloji e fetela ka nģ'ane ho li-niches tse khethehileng ho amoheloa ke indasteri e tloaelehileng. Potso ha se hore na liring tsa fiber optic slip li tla nka sebaka sa mefuta e meng ea motlakase ka-lisebelisoa tse sebetsang hantle-ke hore na indasteri ea hau e tla etsa phetoho kapele hakae.

Mehloli ea Boitsebiso:

Patlisiso ea 'Maraka ea Tlhabollo - Tlaleho ea Mmaraka e Kopanetsoeng ea Fiber Optic Rotary 2024 (https://www.cognitivemarketresearch.com/fiber-optic-rotary{6}}joint-maraka{8}tlaleho)

Servotecnica - 8 Lintho Tse Mabapi le Fiber Optic Slip Rings (https://servotecnica.com/en/8-lintho-tseo{5}}lokelang ho li tseba-tseba-ka-fibre{9}}optic{10}}slip{11}/forj{11}

Moog Inc. - Fiber Optic Rotary Joints Technical Documentation (https://www.moog.com/products/fiber-optic{{4}rotary-joints.html)

RotarX - Fiber Optical Slip Rings (https://www.rotarx.com/en/slip-rings/fiber-optical-slip-rings/)

Malebela a Taolo ea Motion - Motlakase vs Fiber-Optic Slip Rings (https://www.motioncontroltips.com/whats-the{5}}phapang-pakeng tsa{7}}motlakase{8}}le{9}}fiber{10}}optic{11} lip{11}

ThoughtVentions - Fiber Optic Slipring Technical Paper (https://www.thoughtventions.com/PFOSlipringweb.html)

Senring - Fiber Optic Rotary Joints Product Line (https://www.senring.com/fiber-optic-rotary-manonyeletso/)

MarketsandMarkets - Polelo ea Mmaraka oa Rotary le RF Rotary Joints ho fihla ho 2029 (https://www.marketsandmarkets.com/Market-Reports/rotary-rf-joints-market-153269258.html)

lesale la fiber optic le thellang