B CNG THNG

Bo co thc tp Nguyn Tin Dng_CCK02I1

B CNG THNG

Trng cao ng cng nghip Phc YnKhoa in TH

BO COTHC TP TT NGHIP

NGNH CNG NGH K THUT INN V THC TP:Cng ty TNHH chuyn giao cng ngh cao HTEC

SINH VIN THC HIN: Nguyn Tin DngLP : CCK02I1MC LC

2LI NI U

4I.PHN I:

4TM HIU V CNG TY

4KHI QUT CHUNG V HOT NG KINH DOANH CA

4CNG TY TNHH CHUYN GIAO CNG NGH CAO HTEC

41. Qu trnh hnh thnh v pht trin ca cng ty

6II.PHN II:

6CC CNG VIC THAM GIA LM TRONG QU TRNH THC TP TI CNG TY

6Bt u n cng ty tm hiu cng vic v nhn cng vic.

24Hnh 1. Dng thit b RBS 2000

26Hnh 2. RBS2206

27Hnh 3. Khi DXU-21

28Hnh 4. Khi dTRU

29Hnh 5. Khi CXU

32Thit b

32Chiu cao

33Cc ngun cung cp m bo yu cu

37Hnh8. CDU-G 800 trong cu hnh vi 4/4/4 c s dng cc b ghp lai trong dTRU

50III.PHN III :

50KT QU THU C SAU 2 THNG THC TP

51KT LUN

52KIN NGH

LI NI U

Ngy nay cng vi s pht trin khng ngng ca khoa hc, c bit l khoa hc cng ngh Thng tin cho php con ngi tho mn v nhu cu trao i thng tin; Cng vi s pht trin th cng c s pht trin ca cc loi hnh thng tin khc nh: Dch v truyn s liu, thng tin di ng, nhn tin, in thoi th, Internet... gii quyt c nhu cu thng tin ton cu.

Ring h thng thng tin di ng - GSM pht trin mnh m vi s lng thu bao ngy cng tng v chng t c tnh u vit ca h thng. V trong thp k 90 ny, ngnh Bu in Vit Nam tuy cha pht trin nh cc nc trong khu vc cng nh trn th gii song TTD Vit Nam sm pht trin v ng dng nhng cng ngh mi nht, p ng c nhu cu thng tin di ng ca x hi; phc v cho cng tc lnh o ca ng, nh nc ni chung v ngnh Bu in ni ring.

Trong thi gian hc tp ti tng Cao ng Cng Nghip Phc Yn, ngnh in T ng Ha. Em c cc thy c gio ca trng mang ht tm huyt,lng nhit thnh,tnh cm va chuyn mn ging dy,gip em hon thnh tt kha hc ti trng. Tuy hc chuyn nghnh in-TH nhng c s gip nhit tnh ca Thy: Nguyn Vn Qu Trng khoa. Em c c hi i thc tp ti Cty TNHH Chuyn giao cng ngh cao HTEC Mt cng ty chuyn lm v lnh vc vin thng.

D c nhiu c gng trong qu trnh tm hiu v thc tp ti Cty TNHH Chuyn giao cng ngh cao Htec song vn kh trnh khi nhng thiu st trong bn bo co tt nghip ny. hon thnh bi bo co thc tp ny ,ngoi s c gng ca bn thn.em xin chn thnh cm n s gip nhit tnh ca thy gio Nguyn Vn Qu v thy gio Phm Sn Phc cng cc anh ch trong Cng ty TNHH chuyn giao cng ngh cao HTEC .

Trong qu trnh hc hi l lun v nghin cu thc t tuy c s gip tn tnh ca thy gio Phm Sn Phc ,cc anh ch trong cng ty nhng do nhn thc v trnh cn hn hp nn bi vit ny khng trnh khi nhng thiu xt v hn ch .Vy, em rt mong nhn c kin ng gp, nhn xt ca cc thy c gio v ton th cc bn. c iu kin hc hi thm v nng cao kin thc ca mnh phc v tt hn cho qu trnh cng tc sau ny.c bit, em xin chn thnh cm n s gip ca thy Nguyn Vn Qu v s hng dn ca thy gio Phm Sn Phc .

Bn bo co thc tp ny ca em gm c 3 phn chnh nh sau:

Phn 1:Gii thiu v c s thc tp v t chc qun l hot ng ca cng ty

Phn 2:Cc cng vic em tham gia lm trong qu trnh thc tp.

Phn 3:Kt qu thu c sau qu trnh thc tp ti cng ty.Em xin trnh by ni dung c th cc phn trn nh sau:I.PHN I:

TM HIU V CNG TY

KHI QUT CHUNG V HOT NG KINH DOANH CA

CNG TY TNHH CHUYN GIAO CNG NGH CAO HTEC

1. Qu trnh hnh thnh v pht trin ca cng ty

Cng ty TNHH Chuyn giao cng ngh cao HTEC c tn giao dch l Transfer high technology limited company. Cng ty TNHH Chuyn giao cng ngh cao HTEC

l loi cng ty TNHH nhiu thnh vin, hch ton kinh t c lp, t ch v ti chnh, c t cch php nhn, c ti khon c lp v c con du ring.

Ngnh ngh kinh doanh chnh ca cng ty l: lm i tc lp t BTS , cp quang cho cc cng ty vin thng

Ngay t khi mi thnh lp, Cng ty TNHH Chuyn giao cng ngh cao HTEC

tng bc khc phc nhng kh khn thiu thn ban u a vic kinh doanh

v n nh, ng thi khng ngng vn ln v t hon thin v mi mt, sn

phm do cng ty kinh doanh lun p ng c nhu cu ca khch hng v s

lng, cht lng v thi gian vi gi c hp l.

Khi mi thnh lp cng ty gp rt nhiu kh khn c th l: S cng nhn

vin c 100 ngi,

Tng vn kinh doanh ban u ca cng ty c cc thnh vin gp vn l

1.600 triu ngBn cnh , nhn s ca cng ty cha c hon chnh, trnh am hiu

kinh doanh cn t nn cn kh khn trong vic tip cn vi cc chin lc kinh

doanh v th trng cnh tranh y khc nghit, cng l kh khn chung ca

cc doanh nghip t nhn trong nc, nhng vi s n lc vn ln ca mnh,

cng ty tng bc khc phc kh khn ban u. Cng ty va thc hin cng

tc hun luyn kin thc Maketing, tm kim vic lm, va o to i ng nhn

vin chuyn nghip.

2. T chc hot ng kinh doanh ca cng ty2.1. T chc nhn s v b my qun l V cim b my qun l, Cng ty TNHH Chuyn giao cng ngh cao HTEC c quy m qun l gn nh, b my gin tip c sp xp ph hp vi kh nng v

c th kim nhim nhiu vic.Cng ty thc hin t chc qun l theo ch 1 th trng

+ ngu l gim c cng ty, ngi c quyn lnh o cao nht, chu

trch nhim v ton b hot ng kinh doanh; gip vic cho gim c trong vic

qun l c 1 ph gim c (Ph gim c ph trch kinh doanh)

+ Ban qun l kinh doanh ca cng ty bao gm 4phng chnh vi chc

nng v nhim v khc nhau.

- Phng t chc hnh chnh

- Phng kinh doanh

- Phng k ton tng hp

- Phng k thut

+ Gim c: L ngi ng u b my qun l ca cng ty, chu trch

nhim trc mi hot ng kinh doanh trong cng ty. Gim c ngoi u quyn

cho ph gim c cn trc tip ch huy b my ca cng ty thng qua cc trngphng ban. + Ph gim c kinh doanh: Gip vic cho gim c, ph trch phng kinh

doanh v c trch nhim lp k hoch v qun l ngun hng vo v ra ca cng ty.

+ Phng t chc hnh chnh: tham mu gip vic cho gim c v tnh hnh

tin lng, sp xp cng vic, ch khen thng . m bo cho mi ngi trong cng ty chp hnh nghim chnhq uy ch v hp ng lao ng.

+|Phng k thut: Chu trnh nhim v k thut.II.PHN II:

CC CNG VIC THAM GIA LM TRONG QU TRNH THC TP TI CNG TY

Bt u n cng ty tm hiu cng vic v nhn cng vic.

Ngy u tin khi n nhn cng vic v xut trnh nhng giy t cn thit em c gim c cng ty v anh trng phng t chc a ngay n tham quan nh trm v tm hiu cng vic ngay. Cng vic chnh ca chng em c tm hiu l lp t trm BTS. Cng i vi em cn c 9 bn cng lp. ngay bui u tin chng em c tham quan v xem cc anh trong i lp t trm BTS M Linh vi cao ct pht sng l 36m. Sau khi tham quan chng em c anh Chnh phng k thut tp hun cch lp t nh trm, tm hiu s u ni in ngun trong nh trm v s u ni chng st cho trm BTS. Chng em c tm hiu qua v trm thu pht sng BTS nh sau:

Trong trm BTS c rt nhiu thit b: T ngun AC, T ngun DC, T BTS, cc thit b truyn dn.

T ngun AC: chc nng chnh l nhn in t in li hoc t my pht in ( trong trng hp mt in ) cp ngun xoay chiu cho: n v cng tc, my iu ha, t ngun DC...T ngun AC ny c nhng u im sau : tch hp b ct in p cao, t ng chuyn i gia in my n v in li, b lm tr khi s dng in my n...

T ngun DC: nhn in p AC t t ngun AC, sau chnh lu v n p cp ngun DC ( -48v ) cho cc thit b vin thng khc trong trm ( t BTS, cc thit b truyn dn...). Thit k ca t ny rt ... n gin ( theo cc module, nn d dng thay th v khc phc s c ): T, acquy, MCU, Rectifier.T: c cc hc cm cc Rectifier, MCU v cc ngn cha acquy ( mi ngn cha c 4 acquy, mi acquy 12v ).Rectifier: l mt module nhn in p xoay chiu t t, chnh lu v n p thnh mt chiu.MCU l mt module iu khin hot ng ca t, khi mt in chuyn sang dng ngun t acquy, a ra cc cnh bo khi hng rectifer, mt in v cn ngun.Thng thng trong mt t ngun DC c t nht 2 Rectifier nhm d phng khi hng mt Rectifier ( s lng rectifier ph thuc vo ti mnh dng, mi rectifier chu dng ti ti a khong 30 A ). Khi mt in, t ngun DC a ra cnh bo mt in, tn hiu ny cung cp cho t BTS, t BTS s a v trung tm iu khin, nh vy m h bit trm no ang mt in, trin khai my pht in. Trong thi gian mt in, t ngun DC s dng in t ACquy, khi in ca acquy gim xung mc quy nh th cnh bo cn ngun c a v trung tm k thut. Nu lc ny khng trin khai my pht in th acquy cn v trm s khng hot ng c ( chtT ngun AC: chc nng chnh l nhn in t in li hoc t my pht in ( trong trng hp mt in ) cp ngun xoay chiu cho: n v cng tc, my iu ha, t ngunDC...T ngun AC ny c nhng u im sau : tch hp b ct in p cao, t ng chuyn i gia in my n v in li, b lm tr khi s dng in my n...

T ngun DC: nhn in p AC t t ngun AC, sau chnh lu v n p cp ngun DC ( -48v ) cho cc thit b vin thng khc trong trm ( t BTS, cc thit b truyn dn...). Thit k ca t ny rt ... n gin ( theo cc module, nn d dng thay th v khc phc s c ): T, acquy, MCU, Rectifier.T: c cc hc cm cc Rectifier, MCU v cc ngn cha acquy ( mi ngn cha c 4 acquy, mi acquy 12v ).Rectifier: l mt module nhn in p xoay chiu t t, chnh lu v n p thnh mt chiu.MCU l mt module iu khin hot ng ca t, khi mt in chuyn sang dng ngun t acquy, a ra cc cnh bo khi hng rectifer, mt in v cn ngun.Thng thng trong mt t ngun DC c t nht 2 Rectifier nhm d phng khi hng mt Rectifier ( s lng rectifier ph thuc vo ti mnh dng, mi rectifier chu dng ti ti a khong 30 A ). Khi mt in, t ngunDC a ra cnh bo mt in, tn hiu ny cung cp cho t BTS, t BTS s a v trung tm iu khin, nh vy m h bit trm no ang mt in, trin khai my pht in. Trong thi gian mt in, t ngunDC s dng in t ACquy, khi in ca acquy gim xung mc quy nh th cnh bo cn ngun c a v trung tm k thut. Nu lc ny khng trin khai my pht in th acquy cn v trm s khng hot ng c ( cht trm ).

Sau y l mt s hnh nh s lc ca nh trm BTS

Hnh nh nh trm Mt s thnh phn ca trm pht sng vin thng ni chung: - T BTS ( ph thuc vo nh cung cp; cng ngh s dng ). - T Rectifier ( thng i km vi nh cung cp t BTS) -> C bn hiu l chuyn AC-> DC ( vi cc gi tr mong mun). - H thng Batteries ( cng thng i km vi nh cung cp t)-> C bn hiu l cung cp in cho t BTS hot ng khi cp in li AC. - H thng my lnh -> m bo nhit hot ng ca cc thit b in t. - H thng bo v chng st v ni t -> Chc nng nh tn gi. - H thng n tng v n khn cp ( hot ng khi cp in-> gip k s thao tc). - H thng bo chy v h thng bnh cha chy. - H thng t phn phi in. - Thp antenna -> dng t antenna. - H thng antenna -> bc x trong in t ( kch tht ; loi ... ph thuc vo nh cung cp; cng ngh ang s dng). - H thng feeder -> c bn truyn sng t t BTS ln antenna pht sng. - H thng DDF -> thng gi l rack DDF dng lp cc thit b tryn dn.

H thng BTSH thng BTS bao gm ct antenna, antenna RF, antenna truyn dn viba (Microwave), my iu ha, thit b BTS, thit b MW v my n d phng. Ngoi ra cn mt s thit b ngoi vi khc na.

Mt yu t quan trng ca mng BTS l kh dng ca cc thit b ny. Cc thit b BTS c thit k v ch to hn ch ti a cc s c c th xy ra v nu c xy ra th s c sa cha trong thi gian nhanh nht.

Mt s BTS truyn dn quan trng cn c trang b h thng my n c nh v c thit b iu khin t ng trong vic thay i ngun in t ngun in thng sang ngun d phng v ngc li.

La chn Thit b chng st lan truyn qua ng ngun

Hnh di m t vic p dng ng thi h thng chng st v chng xung DEHNventil cho ng ngun t phn phi. DEHN kt hp chng st v chng xung vo trong cng mt thit b, trnh vic phi tch ring tng phn v c th cung cp sn phm hon chnh cho tng h thng h th (TN-C, TN-S, TT).

La chn Thit b chng st lan truyn qua ng vin thngMt s BTS s dng Leased Line (LL) kt ni tn hiu ti trung tm chuyn mch. chng st cho ng LL ny c th s dng thit b chng st Blitzductor TX. Thit b ny kt hp chng st s cp v th cp cho 1 ti 2 ng LL. Thit b c lp trn DIN rail 35mm trc modem.

La chn Thit b chng st lan truyn qua ng RF feeder:

Thit b DEHNgate c ch to chuyn dng cho RF feeder vi kh nng lm vic ti u, bo v dng st ln v lc sch tt c cc xung st trong tin hiu RF. suy hao tn hiu RF rt nh v lm vic trn hu ht cc tn s RF.

Thit b chng st v chng xung c lit k trong bng sau:

TTBo v cho:SPDsPart No.

Thit b tch hp SPDs (chng st v chng xung) cho ng in

13-phase TN-C systemDEHNVentil DV TNC 255951 300

3-phase TN-S systemDEHNVentil DV TNS 255951 400

3-phase TT systemDEHNVentil DV TT 255951 315

Single-phase TN systemDEHNVentil DV 2P TN 255951 200

Single-phase TT systemDEHNVentil DV 2P TT 255951 110

Thit b chng xung cho ng truyn tn hiu

2Dy 2 ti 4 si (Leased Line) 1 E1 hoc 2 E1BLITZDUCTOR ML4 HF 24 + Base part BCT BAS920 375

920 300

3T 1 n 10 i dy trn phim KroneDEHNrapid DRL HD 24 +DRL 10 B 180 FSD + EF 10 DRL907 401

907 498

907 470

Thit b chng xung cho ng RF feeder

1Chng st cho 1 dy RFDEHNgate ty theo tn s RFT 929 042

Ti 929 048

2. Cng vic lm chnh trong qu trnh thc tp

Cng vic chnh chng em s phi lm ng theo chuyn nghnh c hc trng l u ni lp t chng st v in ngun cho trm BTS.

Quy trnh lp t BTS

Chng st v ni t bn ngoi phng thit b:* Ti phn ln cc trm, khi chiu di phn phi t chn ct n thanh ng tip ttrc l cp nhp trm nh hn 5m --> ch dng hai si cp ni t: - Dng mt dy ni t chng st ni vo kim chng st trn nh ct anten v ni trc tip xung cc t. Phn dy chng st cho ct anten cn i thng v c nh vo thn ct, cch li vi dy ni t chng st cho phi, sao cho c st nh, st s thot xung t nhanh nht. - Dy ni t th hai dng ni t chng st cho phi v dy cp tn hiu ca viba. Tnh t anten GSM tr xung, cn tip t cho phi s dng thanh ng tip t ti t nht 03 im : + im u tin khong cch khong 0,3m n 0,6m tnh t im ni gia dy nhy v phi (xem hnh ); Nn bt thanh ng tip t v tr ph hp m bo cc dy tip t cho phi i thng. + im th hai ti v tr (trc khi phi un cong chn ct ) cch ch un cong khong 0,3m. Yu cu cc si dy ni t cho phi khi ni vo thanh ng tip t phi m bo hng thng t trn xung, hn ch un cong ti mc thp nht. + im th ba ti v tr trc l cp i vo phng my. Thanh ng tip t lp di l cp khong 20cm C ba thanh ng tip t chng st cho phi nu trn ni vo bng ng tip t ti v tr trc l cp nhp trm v ni xung cc t. Cc thanh ng tip t cho phi (phn bn ngoi phng thit b ) lp dc theo thang cp v cch in vi ct (xem hnh 1).* Trong trng hp khi chiu di phn phi t chn ct n thanh ng tip t trc l cp nhp trm ln hn 5m, ta dng thm mt dy ni t trc tip t thanhng tip t trc khi cp un cong chn ct ni trc tip xung cc t.* Trng hp cc trm BTS dng nhiu ct nh thay v mt ct chung cho cc anten thni t theo nguyn tc sao cho khi c st nh th st s thot xung t nhanh nht... Ni t trong phng thit b :Dng mt dy ni t ni t bng t chung trong phng thit b i trc tipxung cc t v cch li vi phn chng st bn ngoi phng thit b.T in AC v n p ni t bng mt ng ring. T ct lc st dng mtng ni t ring.V tr thanh ng ni t chung cho phng thit b c th t di l cp nhptrm, hoc di chn tng tu theo iu kin ca tng trm.Ch : Trong trng hp cp i trn ct