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Trng HSPKT Hng Yn Khoa in-in t
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NHN XT CA GIO VIN HNG DN .. .. Hng Yn, thng 5 nm 2012 Gio vin hng dn
NHN XT CA HI NG PHN BINGVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 1
Trng HSPKT Hng Yn Khoa in-in t
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... Ngy thng nm 2012
MC LC MC LC2GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 2
Trng HSPKT Hng Yn Khoa in-in t
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LI M U..4 CHNG I: TNG QUAN............51.1. 1.2. 1.3. 1.4.
Tnh cp thit ca ti.5 Mc ch, yu cu ca ti......5 Gii hn ca ti.5 Cc phng n thit k..6
CHNG II: THC NGHIM..8 2.1. Xy dng s khi tng qut..8 2.2. S nguyn l chung9 2.3.Cc khi trong mch.....10 2.3.1. Khi ngun...10 2.3.2. Khi x l.11 2.3.3. Khi cm bin..12 2.3.4. Khi hin th.12 2.4. S mch in...13 2.5. S mch m phng bng proteus13 2.6. Thit k chng trnh iu khin....14 CHNG III: KT QU..18 3.1. Kt qu t c..18 3.2. Hng pht trin ca ti..18 PH LC...20 KT LUN37
GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 3
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LI M U Ngy nay, s pht trin mnh m ca khoa hc cng ngh, cuc sng ca con ngi c nhng thay i ngy cng tt hn, vi nhng trang thit b hin i phc v cng cuc cng nghip ho, hin i ho t nc. c bit gp phn vo s pht trin th ngnh k thut in t gp phn khng nh trong s nghip xy dng v pht trin t nc. Trong mn k thut vi iu khin c pht trin mnh da trn nhng tin b ca cng ngh tch hp cc linh kin bn dn v h lp trnh c b nh kt hp vi my tnh in t. T nhng thi gian u pht trin cho thy s u vit ca n v cho ti ngy nay tnh u vit ngy cng c khng nh thm. Nhng thnh tu ca n c th bin c nhng ci tng chng nh khng th thnh nhng ci c th, gp phn nng cao i sng vt cht v tinh thn cho con ngi. gp phn lm sng t hiu qu ca nhng ng dng trong thc t ca mn vi iu khin chng em sau mt thi gian hc tp c cc thy, c gio trong khoa ging dy v cc kin thc chuyn ngnh, ng thi c s gip nhit tnh ca thy Nguyn Vn Din chng em thit k v xy dng m hnh m 2 sn phm theo chiu cao trn bng ti Cng vi s l lc ca bn thn nhng do thi gian, kin thc v kinh nghim ca chng em cn c hn nn s khng th trnh khi nhng sai st. Chng em rt mong c s gip v tham kho kin ca thy c v cc bn nhm ng gp pht trin thm ti.
CHNG I: TNG QUANGVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 4
Trng HSPKT Hng Yn Khoa in-in t
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1.1.Tnh cp thit ca ti Hin nay l thi i khoa hc k thut pht trin, cc nh my x nghip sn xut sn phm ca mnh trn cc bng chuyn hin i, sn phm xut ra rt nhanh v nhiu v vy vic m xem c bao nhiu sn phm hon tt xut ra t bng chuyn cui cng th ngi cng nhn kh c th thc hin chnh xc c. V vy mch m sn phm s gip ta kim sot c sn lng cho ra ti mi bng chuyn. Khng ch vy, h thng m sn phm cn gip ngi lao ng bt phn mt nhc chn tay m cho php tng hiu sut lao ng ln gp nhiu ln, ng thi m bo c chnh xc cao. 1.2.Mc ch, yu cu ca ti - Mc ch ca mch m sn phm l gip cho nh my m c s lng sn phm ca nh my to ra mt cch n gin, chnh xc m khng tn nhiu cng sc lao ng ca cng nhn. - Yu cu ca mch m sn phm l phi chy mt cch chnh xc, n nh, gn nh d lp t d sa cha v r tin. 1.3. Gii hn ca ti Cc sn phm rt a dng vi nhiu chng loi: c, rng, kch c khc nhau. Nhng vi kh nng ca thit b lp th mch ch c th m i vi sn phm c kh nng che c nh sng. Nhim vu: Thit k m hinh Thit k phn cng, lp lu thut toan va vit chng trinh iu khin m c 2 san phm khac nhau theo chiu cao. S lng san phm ti a mi loai la 99 Hin thi s lng san phm m c trn led 7 thanh Thuyt minh y u, trinh bay khoa hoc.
1.4. Cc phng n thit k 1.4.1. m sn phn dng IC riGVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 5
Trng HSPKT Hng Yn Khoa in-in t
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Cc u im sau:
Cho php tng hiu sut lao ng. m bo chnh xc cao. Tn s p ng ca mch nhanh,cho php m vi tn s cao. Tn hao cng sut b, mch c th s dng pin.
Kh nng m rng, gi thnh h, mch n gin d thc hin Vi vic s dng k thut s kh c th p ng c vic thay i s m. Mun thay i mt yu cu no ca mch th buc phi thay i phn cng. Do mi ln phi lp li mch dn n tn km v kinh t m nhiu khi yu cu khng thc hin c bng phng php ny. Vi s pht trin mnh ca ngnh k thut s c bit l cho ra i cc h vi x l v vi iu khin rt a chc nng do vic dng k thut vi x l, k thut vi iu khin gii quyt nhng b tc v kinh t hn m phng php dung IC ri kt ni li khng thc hin c. 1.4.2. m sn phm dng k thut vi x l: Ngoi nhng u im nh lit k trong phng php dng IC ri th mch m sn phm dng k thut cn c nhng u im sau:
Mch c th thay i s m mt cch linh hot bng vic thay i phn
mm, trong khi phn cng khng cn thay i m mch IC ri khng thc hin c,nu c th thc hin c th cng gp kh khn do ngi cng nhn kh tip cn, d nhm.
S linh kin s dng trong mch t hn, mch n gin hn so vi mch Mch cng c th kt ni giao tip c vi my tnh thch hp cho ngi
dng IC ri.
qun l ti phng k thut .
1.4.3.m sn phm dung vi iu khin:GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 6
Trng HSPKT Hng Yn Khoa in-in t
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Ngoi nhng u im ca hai phng php trn, phng php dng vi iu khin cn c nhng u im sau: Trong mch c th s dng ngay b nh trong i vi nhng chng trnh c quy m nh, rt tin li m vi x l khng thc hin c. N c th giao tip ni tip trc tip vi my tnh m vi x l cng giao tip c vi my tnh nhng l giao tip song song nn cn c linh kin chuyn i d liu t song song sang ni tip giao tip vi my tnh.
GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 7
Trng HSPKT Hng Yn Khoa in-in t
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CHNG II: THC NGHIM
2.1. Xy dng s khi tng qut
2.2. S nguyn lGVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 8
Trng HSPKT Hng Yn Khoa in-in t
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Nguyn l hot ng: -Khi cha c sn phm i qua tc l cm bin cha tc ng,cha c tn hiu n mch iu khin ta thy 4 led hin th v 0. -Khi c sn phm i qua: + Nu sn phm cao i qua s tc ng vo cm bin cao, tn hiu c a v vi iu khin. Led hin th mc sn phm cao tng ln 1 n v v s ph nh sn phm thp. +Khi co san phm thp i qua, cam bin cao khng b tc ng m ch c cm bin thp c tc ng, tin hiu lp tc c a v vi iu khin va hin th led 7 thanh tng ln 1 n v.
2.3.Cc khi trong mchGVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 9
Trng HSPKT Hng Yn Khoa in-in t
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2.3.1. Khi ngun
-in p u vo l 12V xoay chiu, qua b phn chnh lu cung cp ngun 12V mt chiu v qua IC7805 cung cp ngun 5V mt chiu. -Ngun 5V cung cp in p cho mch iu khin v khi hin th, cm bin.
GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 10
Trng HSPKT Hng Yn Khoa in-in t
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2.3.2. Khi x l
-IC89C51 ly tn hiu vo t cm bin a ra chn P3.2,P3.3 tng ng vi 2 mc sn phm.
GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 11
Trng HSPKT Hng Yn Khoa in-in t
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2.3.3. Khi cm bin
Khi cm bin gip nhn bit sn phm tng ng vi chiu cao ca sn phm m cho ta cc tn hiu khc nhau gi tn hiu ti khi x l. 2.3.4. Khi hin th
GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 12
Trng HSPKT Hng Yn Khoa in-in t
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n s dng 4 led 7 thanh loi ant chung v c iu khin bi vi iu khin t cng P2 v P0.
2.4. S mch in
2.5. S mch m phng bng proteus
GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 13
Trng HSPKT Hng Yn Khoa in-in t
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2.6.Chng trnh iu khin //////////////////CODE DEM SAN PHAM//////////////////////// #include sbit LED1=P2^0; sbit LED2=P2^1; sbit LED3=P2^2; sbit LED4=P2^3;
unsigned int a[10] = {0xC0,0xF9,0xA4,0XB0,0x99,0x92,0x82,0xF8,0x80,0x90 }; int n,m,k,h,x; ////////////////////ham tre/////////////////// void delay(int t) {GVHD: Nguyn Vn Din SVTH:inh Th Lin-Phm Th Loan Page 14
Trng HSPKT Hng Yn Khoa in-in t
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while(t--);
} void ngat_ngoai0(void) interrupt 0 // goi chuong trinh ngat ngoai 0 { x=1; n=n+1; if(n