Bao cao mang truyen dan quang

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  • 1. I HC QUC GIA THNH PH H CH MINH TRNG I HC KHOA HC T NHIN KHOA IN T-VIN THNG BO CO THC TP TI: TM HIU V MNG TRUYN DN QUANG GVHD. THY.NG QUC RNG SVTH:H MINH TM 0920219 NGUYN TH THU THY 0920231 NGUYN THANH HNG 0920181 NGUYN QUC THUN 0920121 NG MINH C 0920166

2. Page 1 LI CM N Trong thi gian thc tp ti Cng ty c phn thng mi v dch v VIT AN, nhm ca chng em c to iu kin tip xc vi mi trng thc t, y l iu m rt nhiu sinh vin mong mun trong nhng nm thng hc i hc. Sut khong thi gian ny, nhm chng em nhn c s hng dn nhit tnh t Thy v cc anh ch ti ni lm vic v hc hi c nhiu kin thc cng nh kinh nghim lm vic. Nhm xin gi li cm n trn trng n thy Ths. Ng c Thun ngi gii thiu nhm em n thc tp ti Cng ty c phn thng mi v dch v VIT AN. Nhm cng xin chn thnh gi li cm n n thy ng Quc Rng ngi tn tnh hng dn nhm chng em trong sut thi gian thc tp. Nhm c bit gi li cm n n anh Vit v anh Bng hai anh trc tip ch dy nhm cng nh a nhm i thc hin ti cc cng trnh thc t, qua gip chng em c c nhng kin thc v cng qu bu mt phn c th chun b cho cng vic sau khi ra trng. Cui cng, nhm xin knh chc qu thy c v ton th cc anh ch trong cng ty c phn thng mi dch v VIT AN di do sc khe v t c nhiu thnh cng trong cng vic cng nh trong cuc sng! 3. Page 2 , ngy.. thng.. nm NHN XT KT QUTHC TP H v tn CBHD thc tp:..................................................................................................... Cquan thc tp: ................................................................................................................. a ch :................................................................................................................................ in thoi:...............................................................Fax....................................................... Email:.......................................................................Website:.............................................. H v tn sinh vin thc tp................................................................................................. Thi gian thc tp:tngy ......................................n ngy........................................ 1. Tinh thn lm k lut, thi lm vic: 4 im(Thc hin ni qui c quan, chp hnh gigic lm vic, thi giao tip, thc bo v ca cng, thi lm vic) .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... 2. Kh nng chuyn mn, nghip v: 3 im(Kh nng p ng nhu cu cng vic, tin thn cu tin, kh nng xut sng kin trong cng vic) .................................................................................................................................................... .................................................................................................................................................... 4. Page 3 .................................................................................................................................................... .................................................................................................................................................... 3. Kt qu cng tc: 3 im(Mc hon thnh thnh cng vic) .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... .................................................................................................................................................... 4. Cc kin khc: 2 im (nu c) .................................................................................................................................................... .................................................................................................................................................... 5. im ngh : (Thang im 10) .................................................................................................................................................... Xc nhn ca cquan Cn b hng dn (K tn v ng du) (K tn v ghi h tn) 5. Page 4 LI M U Cch y 20 nm, t khi h thng thong tin cp si quang chnh thc a vo khai thc trn mng vin thng. Mi ngi u tha nhn rng phng thc truyn dn quang th hin kh nng to ln trong cng vic chuyn ti cc dch v vin thong ngy cng phong ph, v hin i ca nhn loi. Cc h thng thng tin quang vi nhng u im v bng tn rng, c c ly thng tin cao. c sc hp dn mnh i vi cc nh khai thc. Cc h thng thng tin quang khng ch c bit ph hp vi cc tuyn thng tin xuyn lc a, ng trc v trung k m cn c tim nng to ln trong vic thc hin cc chc nng ca mng ni ht vi cu trc linh hot v p ng mi loi hnh dch v hin ti v tng lai. Trong vng mi nm qua, cng vi s vt bc ca cng ngh thng tin, vin thng, cng ngh si quang v thng tin quang cng c nhng tin b vt bc nhm p ng cc yu cu ngy cng khc khe trong vic truyn dn thng tin, gi thnh khng ngng gim to iu kin cho vic ngy cng rng ri trn nhiu lnh vc thng tin, cng ngh thng tin quang c khai thc cc tim nng ca n. Nh ta bit k thut v cng ngh thng tin quang c mt tim nng v cng phong ph v cng vic nghin cu, pht trin vn ang tin v pha trc vi mt tin rng ln. y cng l nhng im mnh m cng ty C Phn Thng Mi Dch V ang pht trin. Vi mc ch lm quen, tip xc, cng nh ng dng vo thc t cc kin thc v cng ngh truyn dn bng cp quang hc, v vy c thc tp ti cng ty c phn thng mi v dch v vit an gip nhm chng em c nhng kin thc thc t v cng quan trng cho cng vic sau ny. Tuy c nhm c nhiu c gn nhng nhng thiu st l iu kh trnh khi, nhm chng em mong nhn c nhiu kin ng gp ca qu thy c cng nh anh ch trong cng ty. Chng em xin chn thnh cm n! 6. Page 5 MC LC I. Gii thiu v cng ty. ..........................................................................................................................6 II. Trang thit b c trong phng LAB...............................................................................................8 1. Thit b ngun in cho vin thng................................................................................................8 2. Thang cp.......................................................................................................................................16 3. T Rack..........................................................................................................................................18 4. H thng lm mt..........................................................................................................................22 5. H thng phng chy cha chy..................................................................................................23 6. H thng chng st. .......................................................................................................................25 III. Mng truyn dn quang. ..............................................................................................................28 1. Tin trnh pht trin ca h thng thng tin quang...................................................................28 1.1 Gii thiu chung....................................................................................................................28 1.2 Lch s pht trin ca h thng thng tin quang. ..............................................................28 2. Cc thit b quang. ........................................................................................................................30 2.1 Si cp quang.........................................................................................................................30 2.2 u ni quang........................................................................................................................41 2.3 Dy nhy quang, dy ni quang...........................................................................................44 2.4 ODF (Optical Distribution Frame) :....................................................................................46 2.5 T cp gc:.............................................................................................................................47 2.6 T cp phi:...........................................................................................................................47 2.7 Mng xng quang..................................................................................................................47 2.8 My hn cp quang:..............................................................................................................50 2.9 Dao ct si quang:.................................................................................................................52 2.10 My o OTDR:......................................................................................................................55 3. M hnh h thng thng tin quang in hnh:............................................................................58 3.1 M hnh h thng thng tin quang: ..............................................................................58 3.2 Cu trc truyn dn mng ng trc Ring:...............................................................60 3.3 Cu trc truyn dn mng Nhnh: .....................................................................................67 4. Cc dch v trong h thng thng tin quang:.............................................................................72 7. Page 6 I. Gii thiu v cng ty. - Cng Ty C Phn Thng Mi Dch V VIT AN vi nh thu chnh l VIETDANJSC, tr s chnh ti 800 802 Hng Bng, P.9, Q.11, TP HCM. y l mt trong nhng cng ty uy tn cht lng chuyn nghip trong vic cung cp cc thit b cng nh cc dch v v gii php trong vin thng hin nay. - Hot ng chnh ca cng ty. THIT K - CUNG CP THI CNG LP T CI TO NNG CP & BO TR BO DNG. Thit k, cung cp, lp th thng cp ngm, cp treo, mng ngoi vi, thit bBTS, tngi, thit boutdoor, thit b truyn dn Viba, thit b truyn dn khng dy WiMax, h thng thng tin v truyn hnh cc chung c, cao c, Cung cp dch v bo tr, bo dng thit b, h thng vin thng: H thng truyn data, h thng truy nhp, thit b Viba. Cung cp Thit bo kim, hn ni cp quang, kim tra thng s khi vn hnh bo tr bo dng my hn, my o cp quang, T VN KHCH HNG. T vn v thi cng xy lp cng trnh vin thng: h thng truyn data, h thng truy nhp, thit b Viba. H thng theo di an ninh, cnh bo t xa, camera quan st, thit b d tm, Thit b vn phng, 8. Page 7 DCH V KHC. Bo hnh, bo tr, sa cha my hn cp quang, my o cp quang thng. . CC DCH V TRIN KHAI. Thi cng lp t hng mc ph tr cho trm BTS, trm vin thng. Lp t thit b BTS, tng i, thit b outdoor, thit b truyn dn. Thi cng mng ngoi vi, h thng thng tin v truyn hnh cc chung c, cao c. Thi cng cp ngm, cp treo. H thng vin thng im ni im, im ni a im, h thng thng tin bin. H thng theo di an ninh, cnh bo t xa, camera quan st, thit b d tm, Thit b chng st trc tip v lan truyn. Thit b truyn dn Viba, thit b mng, thit b truyn dn khng dy WiMax. Thit b truy nhp thu bao. Thit b truy nhp th h mi (NGN). Tng i IP BPX, Contact Centers nn IP, cc sn phm mng. 9. Page 8 II. Trang thit b c trong phng LAB. 1. Thit b ngun in cho vin thng. - Nh chng ta bit, ngun in trong cc trm vin thng ng vai tr ht sc quan trng, c th ni l sng cn i vi s hot ng ca cc thit b Vin thng hay chnh xc hn l m bo cht lng mng v dch v vin thng c hot ng lin tc. Ngy nay ti cc trm vin thng, tng i, trm BTS... hu ht cc thit b vin thng chnh a s u dng ngun 1 chiu -48V. - Vn ti sao chng ta phi dng ngun -48V: + Mt ngun DC vo mt t my thit b Vin thng thng c 3 dy: dy en (hoc ) l GND (0V)-dng ngun, dy blue (-48V)-m ngun v dy vng-xanh l cy PGND (0V)-t v my. + Theo IEEE (Institute of Electrical and Electronics Engineers, Inc.), quy nh in p lm vic cho cc IC v thit b s l 5V (4.5V-5.5V), 10V, 12V,..v mass (t) quy nh l 0V. Vi cc thit b in t ln n s dng vi cng sut kh ln, m Cc ra DC - 54V(Ngun m) Cc ra 0V(Ni t_Ngun dng) Dy ngun vo 1 Pha 220VAc 10. Page 9 bo iu , cn s nguyn ln in th c bn 12x2=24V, 12x4=48V, nn phn ln cc thit b vin thng ni ring, v cc thit b in t cng sut ni chung trong cc h thng ban u thng dng ngun 48V, nhm m bo cn bng vi thng s dng, v cng sut h thng. V t n c xem nh mt in th chun ha. + Nhng in p chun vi p dng, 1 chiu nn nguy him cho tnh mng con ngi. Hn na truyn in p dng suy hao nhiu. Do , ngi ta chuyn qua in p m -48V, khi gi tr tuyt i ca gi tr in p vn m bo l | -48V | = 48V. u thu, ch cn o ngc Mass l c th nhn c in p 48V. Tuy nhin trong nhiu h thng khi o bng ng h vn nng th gi tr -48V thng khng c chnh xc, nhiu khi l -53V, -55V l do m bo cng sut thit b, khi nhu cu ti bnh thng. Khi lng ti tng t ngt v nhu cu s dng khch hng tng th cng sut h thng vn m bo cung cp cho qu trnh thng tin. + hn ch tc hi ca st: Chng ta c th hnh dung l cc m my (to st) c in tch m ( pha gn mt t), khi cc m my ny phng in vo dy cp vin thng (chng ta c 2 dy: mt dy ni t v mt dy mang in m) th chng s chn dy ti ra hin in th ln hn, trong trng hp ny l dy ngun dng 0V. Dy 0V ny c ni t nn s hn ch tc hi ca st. + Ngoi ra cn c mt phn nh li ch c c t vic gim n mn in ha cc thit b v ng dy, nht l cc dng cc ca Acquy d phng. - Trc y phn ln thit b ngun ny c cng sut nh, s dng cng ngh chnh lu bn dn, n p bng thyristor, dng cho cc trm vin thng tng i, trm vi ba dung lng thp. V d nh thit b ngun ca n , ngun ca tng i RAX, hoc mt s b ngun sn xut trong nc...nhm p ng nhu cu trang b cho cc trm vin thng nh, vng su vng xa. 11. Page 10 u im ca loi ngun ny l n gin, d dng trong s dng bo hnh sa cha,t b nh hng do cc yu t mi trng mng in li khng n nh, ging st; gi thnh khng cao. Tuy nhin chng cng c cc nhc im nh cht lng cha cao, cng sut thng khng ln hn 2,5 KW, kch thc, trng lng ln, khng linh hot trong s dng. - Ngoi ra, thc tin trn mng vin thng cn s dng mt s lng ln ngun switching (chuyn mch) c cht lng v cng sut cao hn loi ngun trn. Loi ngun switching ny c thit k dng t hp modul nn trc tip t ngun in 220VAC, cng sut thay i linh hot, c th hostswap tng modul, c mn ch th trng thi, h thng qun l gim st, iu chnh t xa qua giao din phn mm ngun online. Cc h thng ngun ny thng c gi thnh cao, c trang b cho cc tng i loi mi, cc trm vin thng, BTS... 12. Page 11 V d mt trong s b ngun ang s dng trong cc mng vin thng l: Flatpack, Alcatel, Emerson, Kingdo...