Kugadzira PCB yeFiber yeMasoja Yemhando Yekudzivirira

Mapurogiramu eUAV emauto anoisa muganho wezvinodiwa zvekugadzirwa kwePCB ye fiber optic drone. Mabhodhi acho anofanira kurarama munzvimbo dzisingawanzo sangana nemagadzirirwo emabhizimisi: −55 °C kusvika +125 °C, kudedera kusvika 20 g pa 20-2000 Hz sweep, 40 g shock kubva pakuburitswa, munyu fog, fungus, jecha neguruva, uye kukwirira kubva pagungwa kusvika pamusoro pe15,000 m. Anofanira kuchengetedza kutaurirana kwakachengeteka, kusingaonekwe munzvimbo dzemagetsi dzakagadzirirwa kukunda ma redhiyo-based links. Uye anofanira kuita zvese izvi nehurongwa hwe supply chain, kutevedza magwaro, uye kusimba kwekuongorora kunoda kuwanikwa kwekudzivirira.

Kunzwisisa zvinodiwa nemitemo yemauto - kusiyana nezvinorehwa nedzimwe nguva nekushandiswa kwayo - kwakakosha kune chero mainjiniya anogadzira fomu iyi. Mitemo yacho yakanyatsojeka nezvenzira dzekuyedza, zvinodiwa zvekugamuchira, uye magwaro. Kuizadzisa hakusi sarudzo kune mapurogiramu ane zvibvumirano zvekudzivirira; kuienzanisa hakuna kufanana.

Tora Mutengo wePCB weFiber Drone yemauto

Nei Mauto eUAV Anosarudza Fiber Pane RF Yakaoma

Kubatsira kwebandwidth yefiber ndeimwe yekukurudzira kune mamwe mapurogiramu: single-mode fiber pa1310 nm inotakura 10 Gbps patambo inorema 5 g/m, zvichienzaniswa nekuomarara uye huremu hweRF systems inosvika kunyange 1 Gbps pamusoro pemalink ekuona. Kune mapuratifomu anotakura makamera akawanda eEO/IR pamwe neSAR kana SIGINT payloads, bandwidth yefiber inogonesa sensor fusion panzvimbo yepasi iyo RF links isingakwanise kutsigira.

Mitemo Inoshanda: Zvinodiwa Nemumwe Nemumwe Chaizvo

IPC Kirasi 3A (chinongedzo che "A" chenzvimbo uye mashandisirwo emauto) chinowedzera zvinodiwa zvinopfuura Kirasi 3: mhangura inosvika 1 oz (35 µm) pazvikamu zvese zvinosanganisira zvikamu zvemukati, kupatsanurwa kwemakuponi kubva pane imwe neimwe pani yekugadzira, uye mamwe magwaro anoteedzera bhodhi rega rega kunzvimbo yaro yekugadzira.

Zvinhu: Substrate, Copper, uye Surface Finish

Standard FR-4 (Tg 130–140 °C) haina kukwana pakushanda kwe −55 kusvika +125 °C kunodiwa ne MIL-STD-810. Tembiricha yekuchinja kwegirazi ye substrate inofanira kupfuura tembiricha yepamusoro yekushandisa ine margin — high-Tg FR-4 (Tg 170–175 °C, zvichienderana neIsola 370HR specification) ndiyo shoma pane akawanda maapplication ekudzivirira. Polyimide substrate (Tg 250 °C+) inosarudzwa kana tembiricha yekupisa yakanyanya kana kana chirongwa ichi chichida kutevedzera MIL-PRF-31032 Group A test inosanganisira thermal cycling kusvika −65 °C.

Kurema kwemhangura: IPC Kirasi 3 inoda 1 oz (35 µm) zvishoma pane zvikamu zvekunze. Zvikamu zvemukati zvinofanira kuenderana kuti kupisa kuve kwakafanana uye kudzivirira kusiyana kweCTE panguva yekuchinja kwekupisa. Mhangura inorema (2 oz kana 3 oz) inoshandiswa pakuparadzira simba muzvikamu zvemota uye pakuparadzira kupisa pasi pezvikamu zvinopararira zvakanyanya.

Kupera kwepamusoro: Goridhe rekunyudza simbi risina electroless nickel (ENIG) pa IPC-4552 rakajairika — 3–6 µin gold pamusoro pe 120–240 µin nickel. Goridhe iri rinodzivirira nickel kubva mukuoxidation panguva yekuchengetwa; nickel inopa nzvimbo yekunyudza. ENIG inoenderana ne lead-free uye tin-lead soldering (tin-lead ichiri kubvumidzwa kune Class 3 military applications apo DoD yakabvumidza kuregererwa kubva kuRoHS). Goridhe rakaoma (electrolytic, 30+ µin) rinoshandiswa pama edge connectors kana ikaiswa kakawanda. Kunyudza sirivha hakudiwi kune kuchengetedzwa kwenguva refu nekuda kwengozi yekufamba kwesirivha munzvimbo dzine hunyoro.

Pazvinodiwa zvekusimbisa masaini e10 Gbps optical data link sections, zvinhu zvinorasikirwa zvishoma ( Megtron 6 , Isola I-Tera MT40 ) zvinoderedza kurasikirwa kwekuisa pakufamba kwenguva refu. Zvinodiwa zvekupisa kwemauto uye zvinodiwa zvekusimbisa masaini zvinoisa zvirevo zvezvinhu zvakabatana zvinobvisa standard FR-4 uye zvinonongedzera kuchikamu chelaminate che high-Tg, low-loss.

Manufacturing Process Controls

Kugadzira kweIPC Kirasi 3 kunoda kudzorwa kwakanyorwa kwemaitiro padanho rega rega. Mugadziri anofanira kuratidza kugona kwemaitiro (Cpk) pakunyoresa maburi, ukobvu hwemadziro, impedance, uye ukobvu hwepamusoro. Kuongorora kwekutanga (FAI) maererano neAS9102 kunosimbisa kuti bhodhi rekutanga rekugadzira rinotevedzera chinangwa chekugadzira risati raburitswa.

Kuongorora paste yesolder (SPI) mushure mekudhinda, kuongorora otomatiki kwemaziso (AOI) mushure mekudzokorora, uye kuongororwa kweX-ray kwese kweBGA nezvikamu zvakagumiswa pasi zvinosungirwa, kwete sarudzo. Maitiro eAOI anofanirwa kugadziriswa zvichienderana nebhodhi chaiyo - kufona kwenhema hakugamuchirwi nekuti kunogadzira kuongororwa kwemaoko kunokonzera njodzi dzayo dzemhando. X-ray inofanirwa kuitwa nevashandisi vakadzidziswa vachishandisa michina yakajairwa; kududzirwa kwemifananidzo yezvikanganiso zvemusoro-mu-piro (HiP) uye zvisina kunyorova (NWO) zvinoda ruzivo rwusingapiwi nekuongorora kweX-ray kusingawanzoitiki.

Kupatsanura madziro nezvikamu zvidiki: makuponi ekugadzira kubva pane imwe neimwe anopatsanurwa, anokwenenzverwa, uye anoongororwa achikwidziridzwa. Ukobvu hwemadziro ane maburi akaputirwa, kufukidza mabvi, ukobvu hwe dielectric, uye kunyoreswa zvinoyerwa uye zvakanyorwa. Chero kuponi inokundikana kutevedzera zvinodiwa zveIPC Class 3 zvinoita kuti paneri rese rigare rakavharirwa richimirira kubviswa.

Maitiro ekutevedzera mitemo yeIPC yeHighleap uye ekusimbisa mhando anotsigira kugadzirwa kweClass 3 nemapakeji akazara emagwaro.

Conformal Coating uye Encapsulation

Kuputira kwakabatana kunodiwa pamabhodhi emauto anoshanda munzvimbo dzine hunyoro, munyu, uye munzvimbo dzine hunyoro. Kuputira uku kunofukidza majoini emuchina wekugadzira nemidziyo yezvikamu, kudzivirira kupinda kwehunyoro, kusvibiswa, uye kubuda kwemvura pamusoro peionic izvo zvinogona kukonzera kutadza kushanda nguva nenguva.

Mhando dzekuputira dzezvishandiso zvekudzivirira:

• Acrylic (AR): Zviri nyore kugadzirisa patsva, hunyoro hwakanaka, makemikari mashoma. Zvakakodzera mapuranga ari mudzimba dzakavharirwa.
• Polyurethane (UR): Kusashanda zvakanaka kwemakemikari pane acrylic, kuoma kwekugadzirisa patsva kuri pakati nepakati. Sarudzo inowanzo shandiswa mumauto.
• Silicone (SR): tembiricha yakakura kwazvo (−65 kusvika +200 °C), inochinjika uye inodzivirira kudedera zvakanyanya. Inodiwa munzvimbo dzinopisa zvakanyanya. Kugadzirisa patsva kwakaoma — inoda kucheneswa kwe solvent inogona kurwisa zvinhu zviri pedyo.
• Parylene (XY): yakachengetwa neutsi, isina maburi, yakatetepa (12–50 µm), yakafukidzwa zvakanaka nejometri dzakaoma. Haigone kushandiswazve pasina michina yakasarudzika. Yakasarudzwa pamabhodhi uko kugadziriswazve kusingatarisirwi kana kugamuchirwa.

Kushandiswa kwependi kunofanira kuvhara zvinobatanidza, nzvimbo dzekuyedza, uye zvikamu zvine thermal interfaces. Hunhu hwependi hunokanganisa kuvimbika: nzvimbo dzakavharirwa dzinosvibisa zvinosangana nezvinobatanidza zvinokonzera kubatana kunoitika nguva nenguva; nzvimbo dzakavharirwa dzinosiya pamusoro pebhodhi risina kudzivirirwa. Kune zvikamu zvakavharirwa, zvinodiwa zvekugamuchira zveIPC-A-610 Class 3 zvinoda kufukidzwa kwakafanana pasina mabubbles, delamination, kana kumhanya kunogona kubata hunyoro.

Chikumbiro cheMurwi weKufamba-famba

Zvombo zvehondo zvinofamba-famba (LMs) zvinomiririra divi rinotungamirirwa nefiber remhuri yemauto eUAV: mapuratifomu anogona kushandiswa anobhururuka basa asi asingawanikwe. Zvinodiwa zvePCB zveLMs zvakasiyana neISR drones dzinoshandiswazve munzira dzakasiyana-siyana dzinokanganisa sarudzo dzekugadzira nekugadzira.

Muenzaniso wekuvimbika kwebasa rimwe chete: bhodhi rinofanira kushanda nemazvo kwenguva yebasa (kazhinji maminetsi 30-120) pasina kukundikana. Harifanirwe kurarama mabasa akawanda kana kupasa bvunzo dzehupenyu hwese pamaawa anopfuura 1000. Izvi zvinoshandura nzira yekukodzera kubva pakuedza hupenyu hwese kuenda pakuedza kuvimbika kwebasa: kuongorora zvakatipoteredza pa100% yemayuniti, bvunzo yekushanda isati yaitwa uye mushure mekuongorora, uye kupiswa pakupisa kwakakwira (kazhinji maawa 48-72 pa85 °C) kubvisa kukundikana kwehupenyu hwese usati watanga basa.

Kugara kwenguva refu kwekuchengetedza: MaLM anogona kuchengetwa kwemakore asati ashandiswa. PCB inofanira kurarama munzvimbo yekuchengetera (kuchinja kwekushisa mumidziyo yakavharwa, kuchinja kwehunyoro, dzimwe nguva kuvhunduka kubva pakubata) uye yozoshanda nemazvo pakutanga kwekugadzirisa mushure mekuchengetedza. Zvikamu zvine hupenyu hushoma hwekuchengetedza (macapacitor emagetsi, mabhatiri) zvinoda kutarisirwa kwekutarisira mamiriro ekuchengetedza uye kutsiva nguva nenguva.

PCB inotungamira pakushandisa zvombo zvinofamba-famba yakatsanangurwa muchikamu chePCB chekutonga UAV chinotungamirirwa nefiber , icho chinofukidza nguva yekuraira, kusafa, uye zvinodiwa zvekutarisa zvinhu zvakanangana nemapuratifomu anogona kushandiswa.

Kushandiswa kwePuratifomu yeTactical ISR

Mapuratifomu eISR anogona kushandiswazve anomiririra chinangwa chikuru chekugadzira PCB yedhizaini yemagetsi ehondo: mabhodhi anofanira kurarama mazana emaawa ekubhururuka munzvimbo dzakasiyana siyana, kuchengetedza mashandiro sezvo zvikamu zvichikura, uye kutsigira kugadziriswa kwakarongwa kusanganisira firmware updates uye diagnostics.

Hupenyu hwekugadzira: maawa ekubhururuka e500–2000 akajairika pamapuratifomu ekudzivirira eISR. PCB inofanira kugadzirwa uye kuenderana nenhamba iyi yehupenyu nekuderedzwa kwakakodzera. Nzira huru dzinoderedza hupenyu: kuneta kwemajoini e solder nekuda kwe thermal cycling (kubhururuka kwega kwega kutenderera kwe thermal), kupera kwe connector nekuda kwekubatana kakawanda, kukwegura kwe capacitor (electrolytic capacitance inoderera nekufamba kwenguva, kuwedzera ripple voltage mumagetsi), uye optical transceiver laser aging (threshold current uye slope efficiency drift nemaawa ekushanda).

Nzvimbo yekubatanidza mapuratifomu anogona kushandiswazve — spool PCB , ground station canister electronics , uye optical data link board — inofanira kuenderana nekirasi yekuvimbika kwebhodhi rekutaurirana. Bhodhi rekutaurirana reClass 3 rakabatana nebhodhi reClass 2 rinogadzira kubatana kusina kusimba paspool izvo zvinokanganisa mari inoshandiswa mubhodhi rekutaurirana.

Kuongorora zviri mundege: mapuratifomu emauto anogona kushandiswazve anobatsirwa nekugona kwakavakirwa mukati mebvunzo (BIT) — maitiro ekuzviedza ega anoita pakugadzirisa uye nguva dzose panguva yekushanda, achipa ruzivo nezvehutano hwesisitimu kuvashandi vekugadzirisa. Data reBIT rinofambisa hurongwa hwekugadzirisa hwekufanotaura, richibvumira kutsiviwa kwechikamu chisati chakundikana pane mushure meizvozvo. Data re optical DDM kubva kutransceiver (simba rekutumira, simba rekugamuchira, laser bias) ndiyo inonyanya kukosha muBIT — maitiro ari muzvikamu izvi anofanotaura hutano hwefiber netransceiver mwedzi isati yakundikana.

Dhizaini yeBhutsu Yakachengeteka uye Inodzivirira Kukanganisika

Zvirongwa zvekudzivirira zvinobata data remabasa akavanzika kana maalgorithms ekushanda zvinoda dziviriro kubva pakugadziriswa kwefirmware isina mvumo, kubviswa kwedata, uye reverse engineering. Dhizaini yePCB inoshandisa matanho akawanda ekudzivirira:

Chinhu chakachengeteka: Module yekuchengetedza hardware (HSM) kana module yepuratifomu inovimbwa (TPM) inochengeta makiyi e cryptographic mundangariro isingachinjiki. Makiyi anogadzirwa pachishandiso uye haambotaurwi mumashoko asina kujeka. Chinhu chakachengeteka chinoita mabasa ekusimbisa uye kutora makiyi pasina kuisa makiyi munzvimbo yekurangarira ye processor huru.

Chain yeboot yakavimbiswa: Boot ROM (mu ROM yemasiki, isingachinjiki) inosimbisa siginecha yebootloader yedanho rekutanga ichishandisa kiyi yeruzhinji yakachengetwa muchinhu chakachengeteka. Bootloader yedanho rekutanga inosimbisa danho rechipiri; danho rechipiri rinosimbisa firmware yeapplication. Chero kutyoka kwecheni kunomisa boot uye kunoita kuti mhinduro isashande. Izvi zvinodzivirira murwisi anogona kugadzirisa flash memory kuti asashandise kodhi isina mvumo.

Kusashanda kweZero pakuonekwa kwetamper: Ma sensor ekuti tamper ashande (accelerometer yekuona kudonha/kukanganisa, sensor yechiedza yekuvhura macase, voltage monitor yekushandura supply) anobatanidza kune chinhu chakachengeteka chinopinzwa mu tamper. Pakuonekwa kwetamper, chinhu chakachengeteka chinobvisa makiyi e cryptographic nema zero - basa rinopera muma microseconds, nekukurumidza kupfuura chero kurwiswa kwekubvisa makiyi.

Mesh inodzivirira kutambisa: Matinji matete anofambiswa paPCB yemukati muchimiro chinovhara zvinhu zvinonzwa. Chero kubhoorwa kana kupatsanurwa kunoedza kusvika kune zvikamu zviri pasi pemesh kunotyora chitarisiko, zvichionekwa sekukundikana kuenderera mberi kunokonzera zeroization. Matinji anofanira kufambiswa kudzivirira kugadziriswazve kubva pakupatsanurwa kwematinji nematinji.

Kupfeka kwekudzivirira: Kuvhara kwepoxy kana kufukidza kwakasimba pamusoro penzvimbo dzine zvikamu zvinonzwa kunoita kuti kupinda kwemuviri nekukuya kana kupolisha kuve kwakaoma uye kunoparadza zvakanyanya - chero kurwiswa kunosvika pasilicon kunokuvadza zvikamu zviri kurwiswa.

Kutengesa Zvinhu uye Kudzivirira Zvenhema

Zvikamu zvemagetsi zvenhema zvinotyisidzira zvirongwa zvekudzivirira — zvikamu zvekutengeserana zvakaongororwa zvakare zvichinzi zvemhando yemauto, zvikamu zvakadzoserwa kubva kumabhodhi ekuchengetedza, uye zvikamu zvakagadzirwa zvachose zvese zvakawanikwa muzvikamu zvekuchengetedza. Migumisiro yacho inobva pakukundikana kwemunda nguva isati yakwana kusvika kumidziyo yemagetsi yakagadzirwa nemaune muzvikamu zvakagadzirwa nevavengi.

SAE AS6171 inopa nzira dzekuyedza kuona zvinhu zvinofungidzirwa/zvenhema. Nzira huru: X-ray fluorescence (XRF) yekusimbisa kuumbwa kwe lead frame alloy, scanning electron microscopy (SEM) yekuona zviratidzo zvepamusoro uye topology ye die, electrical characterization zvichienderana nemiganhu yedatasheet yekutanga, uye decapsulation yekutarisa die yekuona. Hazvisi zvese zvikamu pabhodhi rega rega zvinoda mwero uyu wekuongorora - kuongorora kwakavakirwa panjodzi kunotarisa pane ma IC ane density yakakwira, zvikamu zvakaiswa muchiratidzo chemauto, uye zvikamu zvakatorwa kunze kwenetwork yekuparadzira ine franchise.

Kutevedzera DFARS (Defense Federal Acquisition Regulation Supplement): Vagadziri vezvokudzivirira vekuUS vanofanirwa kuwana zvikamu zvemagetsi kubva kune vagadziri vemidziyo yekutanga (OEMs), vagovanisi vane mvumo, kana vagovanisi vakazvimiririra vanotevedzera zvinodiwa neAS6081 zvekurwisa manyepo. DFARS 252.246-7008 inoita kuti izvi zvive zvinodiwa pachibvumirano, kwete kurudziro.

Kutevedza zvikamu: chikamu chimwe nechimwe chiri pabhodhi rekudzivirira chinofanira kuteverwa kusvika kukodhi yezuva, nhamba yenzvimbo, uye kwachinobva. Izvi zvinogonesa kudzoserwa nekuongororwa kwakanangana kana nzvimbo yekunyepera yaonekwa muketani yekugovera mushure mekunge mabhodhi aiswa. Data rekutevera rinotorwa pakuungana uye rinochengetwa muhurongwa hwekugadzirisa hwakabatana nenhamba yeserial yebhodhi rega rega.

Environmental Qualification Testing

Nzira dzekuyedza dzeMIL-STD-810H dzine chekuita nePCB dze fiber drone dzinofambiswa nemhepo:

Nzira 501.7 (Kupisa Kwakanyanya): Kuedza kwekushanda pa +71 °C (muganho wepamusoro wendege), kuyedza kwekuchengetedza pa +85 °C. Optical transceiver inofanira kusangana nezvinodiwa neBER pakupisa kwakanyanya — laser threshold current uye slope efficiency zvinoenderana nekupisa, uye simba rebhodhi rinofanira kutsiva.

Maitiro 502.7 (Tembiricha Yakaderera): Inoshanda pa −40 °C, kuchengetwa pa −55 °C. Kutanga kutonhora kunoda kutarisirwa: ma capacitor emagetsi ane ESR yakakwira patembiricha yakaderera; ma crystal oscillators anogona kusatanga zvakanaka pasi pe −40 °C pasina zvinhu zvinopisa; ma coatings e conformal anogona kutsemuka kana akaiswa akakora zvakanyanya.

Nzira 514.8 (Kudedera): Kudedera kwakarongeka kwakakodzera nzvimbo yekushanda kwepuratifomu. Kune maUAV, kudedera kwakakodzera kunosanganisira kudedera kunokonzerwa nekufambisa (rotor harmonics, motor vibration) uye turbulence. Kuvimbika kwemajoini eSolder ndiko kunonyanya kukosha - mapakeji eBGA neQFP pasi pekuneta kwekudedera - kunoda kuzara kwakakwana kwemaBGA makuru uye dhizaini yakakodzera yetsoka kuti iparadzire kushushikana kwekudedera.

Nzira 516.8 (Kuvhunduka): Mapundu eHalf-sine shock ari pa40 g, 11 ms kwenguva (functional shock), uye 75 g sawtooth (njodzi yekuvhunduka). Zvinobatanidza, makristaro, uye ma inductor ndizvo zvinhu zvinonyanya kukuvadzwa ne shock. Nzvimbo yekumira pakati pebhodhi inofanira kugadzirwa kudzivirira resonance pa shock pulse frequency.

Kuongororwa kwezvitupa kunoitwa pamayunitsi ekugadzira mainjiniya (EDUs) dhizaini isati yaburitswa. Nzvimbo dzekugadzira dzinosimbiswa nekuyedzwa kwesampuli zvichienderana nedanho rekuongorora rechibvumirano (kazhinji S-2 paMIL-STD-1916 kana yakaenzana nayo).

FAQ

Ko drone yega yega yemauto inoda kutaurirana nefiber here?
Kwete. Madrone mazhinji emauto anoshanda neRF links dzakaomarara — frequency-hopping, spread-spectrum, jam-resistant waveforms. Fiber inosarudzwa kuti iite zvinodiwa pakushanda: zero RF emission yeLPD/LPI, absolute jam immunity, kana bandwidth inodarika kugona kweRF. Sarudzo inotorwa negwaro rezvinodiwa zvekutaurirana repuratifomu, kwete nekuda kwezvinodiwa zve fiber pane RF.

Mabhodhi emagetsi anodhonzwa nefiber anogona kugadziriswa kuti ashandiswe muchiuto here?
Mabhodhi ekutengeserana anogona kushanda sechiratidzo chepfungwa yekufananidzira uye kusimbisa pfungwa. Haagone kutsiva magadzirirwo emhando yemauto muzvirongwa zvekugadzira. Musiyano hausi wekushongedza - zvinhu Tg, ukobvu hwemhangura, kuburikidza neplating, workshop assembly, component screening, uye magwaro ekutevera zvese zvakasiyana pakati pekugadzirwa kwemhando yekutengeserana neyemauto. Kuedza kupasa mabhodhi ekutengeserana kuburikidza nekuyedzwa kwezvidzidzo zvemauto kunowanzo kukonzera kukundikana pakuongorora zvakatipoteredza.

Inguva yakadini yekugadzirira kugadzirwa kwePCB yemhando yemauto?
Kugadzirwa kweIPC Class 3 neMIL-PRF-31032 kunowanzoda mavhiki 4-8, zvichienzaniswa nemavhiki 1-2 eClass 2 yekutengeserana. Nguva yekuwedzera inoratidza kuyedzwa kwemakuponi, kupatsanurwa kwezvikamu zvishoma, uye kugadzirira magwaro asingaitwe mukugadzirwa kwekutengeserana. Mapurogiramu ane nguva dzakatarwa anofanira kuronga nguva iyi yekutanga kubva pakutanga kwekuburitswa kwekugadzirwa, kwete kubva pakupihwa kwechibvumirano.

Highleap inotsigira sei zvirongwa zvekudzivirira?
Highleap inopa kugadzirwa kwemhando yekudzivirira neIPC Class 3 process controls uye Gungano zvinoenderana nezvinodiwa neIPC-A-610 Class 3. Magwaro akazara ekutevera, kudzorwa kweimpedance ine TDR verification, conformal coating, uye rutsigiro rwekuwana zvikamu zviripo. PCB yemauto kugona kunofukidza zvinodiwa zvekugadzira nekugadzira zvinotsanangurwa munyaya ino.

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