Project2014 Big-Bird 101214

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TRNG I HC BCH KHOA H NIVIN IN T VIN THNG

N D THIPROJECT TT NHT 2014 TI: MCH NG H LCH VN NIN

Nhm Big Bird1. Nguyn Th NamKSTN- TVT- K5820132688

2. Hong Tun LinhKSTN- TVT- K5820132263

3. Vng ng HuyKSTN- TVT- K5820131809

4. Nguyn Thnh tKSTN- TVT- K5820130848

5. Nguyn Vn LongKSTN- TVT- K5820132393

ST nhm trng: 0169. 738. 3863

___________________________________________________________________Mch ng h lch vn ninNhm Big Bird

H Ni, thng 12/20141

5

MC LC

Li ni u4I. M t ti51. tng sn phm52. M t sn phm6II. Yu cu k thut71. Yu cu phi chc nng72. Yu cu chc nng10III. Thit k h thng111. Thit k s khi112. S chi tit tng khi11a. Thit k khi ngun11b. Thit k khi iu khin11c. Khi hin th133. La chn phng n ti u14a. Khi ngun14b. Khi iu khin14c. Khi tn hiu vo15d. Khi hin th15d. D tr chi ph:164. Phn tch nhn lc175. Phn cng cng vic18IV. Thit k chi tit tng khi201. Thit k khi ngun202. Thit k s khi iu khin213. Khi hin th25V. M phng mch281. M phng khi ngy gi28a. M phng trn phn mm Proteus28b. M phng trn thc t282. M phng khi nhit v led vin293. Cc vn gp phi trong qu trnh lm mch v cch gii quyt29VI. Hon thin sn phm31VII. Cm nhn v cuc thi Project tt nht37VIII. Ph lc381. Danh mc hnh v382. Danh mc bng biu393. Ngun tham tham kho:39

Li ni u

Nhm Big Bird chng ti xin gi li cm n chn thnh nht n cc thy c ca vin in t - Vin thng, cm n Lin chi on vin in t - Vin thng to iu kin chng ti c th tham gia cuc thi ny. Xin cm n nh ti tr Tuhu tr gip ti tr linh kin v c vn cho chng ti trong qu trnh lm mch, v xin cm n nhng ngi bn gip chng ti vo nhng gi pht kh khn nht.Nhm Big Bird chng ti xin gi li cm n chn thnh nht n cc thy c ca vin in t - Vin thng, cm n Lin chi on vin in t - Vin thng to iu kin chng ti c th tham gia cuc thi ny. Xin cm n nh ti tr Tuhu tr gip ti tr linh kin v c vn cho chng ti trong qu trnh lm mch, v xin cm n nhng ngi bn gip chng ti vo nhng gi pht kh khn nht.Nhm Big Bird chng ti xin gi li cm n chn thnh nht n cc thy c ca vin in t - Vin thng, cm n Lin chi on vin in t - Vin thng to iu kin chng ti c th tham gia cuc thi ny. Xin cm n nh ti tr Tuhu tr gip ti tr linh kin v c vn cho chng ti trong qu trnh lm mch, v xin cm n nhng ngi bn gip chng ti vo nhng gi pht kh khn nht.Nhm Big Bird chng ti xin gi li cm n chn thnh nht n cc thy c ca vin in t - Vin thng, cm n Lin chi on vin in t - Vin thng to iu kin chng ti c th tham gia cuc thi ny. Xin cm n nh ti tr Tuhu tr gip ti tr linh kin v c vn cho chng ti trong qu trnh lm mch, v xin cm n nhng ngi bn gip chng ti vo nhng gi pht kh khn nht.Nhm Big Bird chng ti xin gi li cm n chn thnh nht n cc thy c ca vin in t - Vin thng, cm n Lin chi on vin in t - Vin thng to iu kin chng ti c th tham gia cuc thi ny. Xin cm n nh ti tr Tuhu tr gip ti tr linh kin v c vn cho chng ti trong qu trnh lm mch, v xin cm n nhng ngi bn gip chng ti vo nhng gi pht kh khn nht.

Nhm Big Bird H Ni, ngy 25/1/2015

I. M t ti1. tng ti

C cu ni: Time is not money, c ngha l cho d c tin cng khng th no c c thi gian. C th ni thi gian l mt th v cng qu bu, d cho mt bin ng nh cng c th lm thay i trc tip cuc sng ca con ngi. D ch c thm mt ngy nhng cng c th cho nhng bnh nhn b bnh tim c thm hy vng c phu thut, cho d ch c thm mt gi nhng cng c th cho nhng ngi cng nhn ngho c th kim thm thu nhp, d ch c thm mt pht nhng cng c th cho nhng hc sinh thi gian hon thnh bi thi ca mnh, tuy ch c thm mt giy nhng cng c th cu c mt mng ngi khi b tai nn giao thng. Chnh v vy, t thi xa n nay, con ngi lun lun c mong mun tm cch thc chinh phc khng gian v thi gian. V khng gian, con ngi c nhng thnh tu nht nh trong vic chinh phc n nh c th t chn ln mt trng, phng thnh cng tu thm him thm d sao ha, ch to c nhng chic knh thin vn c th nhn thy nhng thin h cch chng ta hng trm triu nm nh sng. Th nhng trong vic chinh phc thi gian, con ngi vn cha c c mt bc tin ng k no. Vic quay ngc thi gian hay bit trc c tng lai vn ch l nhng cu chuyn ch c trong nhng b phim khoa hc vin tng m thi. Bi v chng ta khng th iu khin thi gian theo mnh nn chng ta ch c th s dng nhng cng c kim sot thi gian ca chnh mnh. Nu c th qun l thi gian tt s lm cho cng vic c thc hin mt cch trn tru v t hiu qu, tc cao nht. Cng c , cho d c nhiu kiu dng, hnh dng v bin th khc nhau nhng v bn cht n vn khng h thay i, chnh l chic ng h, mt vt dng v cng thn quen trong cuc sng i vi tt c mi ngi. C ngi s ni, hin nay in thoi di ng c s dng rt rng ri v n cng c tc dng ca mt chic ng h, li cn nh gn, rt tin li mang theo bn mnh, cho nn khng cn n ng h lm g. Hn na hin nay trn th trng c rt nhiu loi ng h c th la chn ri do ti ny s kh ng dng vo thc t v sn phm s khng c th trng. Vy ti sao nhm Big Bird chng ti li quyt nh chn ti ny? Chng ti xin lit k mt s l do chng ti vn quyt nh theo ui ti ny nh sau: - Th nht: Khng phi ai cng c th s dng in thoi lm ng h s dng. Chng hn nh mt hc sinh tiu hc, in thoi di ng tuy ph bin nc ta nhng a phn hc sinh tiu hc u khng c. Hn na, cho d c l hc sinh lp ln hn hay k c nhng ngi ang i lm hay chng na, khi lm vic cn phi c mt s tp trung nht nh, nu dng in thoi, ai s m bo l s khng b mt tp trung bi cc ng dng tin ch khc trn in thoi nh game, nhc, facebook Do vic c mt chic ng h s dng l iu v cng cn thit. - Th hai: in thoi di ng tuy ph bin tht nhng i vi ngi Vit Nam ta vn cha th thay th c vai tr ca ng h trong cuc sng. Mt chic ng h tuy c th khng nhiu tin ch bng mt chic in thoi, nhng li c th lm cho ngi nh, bn lm vic ca bn tr nn p mt hn bi ngoi chc nng chnh l hin th gi ra, nhiu ngi cn coi ng h nh l mt vt trang tr c tnh thm m cao v rt ph hp lm tng v p cho ngi nh ca mnh. - Th ba: Mt chic ng h c th coi l mt mn qu nhiu ngha trong nhng dp k nim hay tic sinh nht, ch chng my ai li i tng in thoi di ng lm qu c bi gi tr ca n qu cao.- Th t: Trn th trng hin gi c rt nhiu loi ng h c kiu dng khc nhau, tuy nhin loi y chc nng, mu m p thng c kch thc to v gi thnh cao, cn loi nh, gi r li ch c mu m thng thng, khng a dng, do la chn c mt chic ng h hp mnh cng rt kh khn. Nhn thc c nhng c hi , nhm Big Bird chng ti quyt nh la chn ti lm mt chic ng h lch vn nin s dng LED 7 thanh v LED n nhy theo hiu ng

2. M t sn phm

ti m nhm Big Bird chng ti la chn l: Mch ng h lch vn nin.Khc vi nhng chic ng h bn thng thng ch hin th ngy gi v ch cho php hn gi, sn phm ca chng ti ngoi vic cho php hin th ngy gi, cho php hn gi ra cn cho php hin th nhit trong phng, ngoi ra cn c n LED vin trn mt ng h c th iu chnh hiu ng dng trang tr hoc cng c th s dng nh mt chic n ng y mu sc. Vi chic ng h ny bn c th dp i chic ng h vn nin to cng knh, hay chic n ng va tn in va ch c mu sc nht nho, sn phm ca chng ti c th thay th hon ton nhng th y. Hn na, ng h chng ti thit k ph hp vi vic trn bn lm vic, do nh gn v chim t khng gian, ngoi ra mu m c th ty chnh ph hp vi yu cu khch hng, hiu ng nhy LED cng c th lm theo yu cu ca khch hng, do c tnh thm m cao, rt ph hp vi nhng khch hng yu cu mt chic ng h nh mt mn trang tr.II. Yu cu k thut

1. Yu cu phi chc nng

* Hnh dng: - Sn phm l mt hnh hp kch thc 8.4cm x 18.2cm x 10cm.- Mt hin th (mt y trn) v mt y di l hai hnh ch nht c kch thc 8.4cm x 18.2cm.- Mt bn l cc hnh ch nht c kch thc 10cm x 8.4cm v 18.2cm x 10cm.

Hnh 1. Kch thc sn phm

* Trn mt hin th: - S dng 52 LED n vin ngoi, mi LED cch nhau 1cm, chiu di c 16 LED, chiu rng c 10 LED, LED cch cc cnh l ca ng h mt khong l 5mm. - Bn trong vin LED 7 n l 2 hng LED 7 thanh hin th ngy-gi-nhit .+ Hng th nht: Gm 4 LED 7 thanh c xp sao cho cnh di thng nhau, cc led7 thanh c kch thc 0. 56 inch hin th gi v pht, cc LED cng hin th mt i lng c t st nhau. Gia LED hin th gi v pht c 2 LED n 5mm nhp nhy theo giy. Cnh tri ca LED th hin gi cch vin LED n 1 khong 1.6 cm, cnh trn ca led 7 thanh hin th gi cch vin led n 1 khong 1.2 cm. + Hng th hai: gm 7 LED 7 thanh trong c 3 led 7 thanh n kch thc 0. 36 inch v 4 led 7 thanh i kch thc 0.36 inch nm ngang nhau hin th th, ngy, thng, nm v nhit trong LED 7 thanh n u tin hin th th, 1 LED 7 thanh i tip theo hin th ngy, LED 7 thanh i tip theo hin th thng, 2 LED 7 thanh i cn li hin th nm, cn 2 LED 7 thanh n cui hin th nhit . Cc LED hin th cng mt i lng c t st nhau, cn cc LED hin th i lng khc nhau th t cch nhau 1cm. Cnh trn ca hng th hai cch cnh di ca hng th nht 1 khong l 0.9 cm. Cnh tri ca hng th 2 cch vin LED n 1 khong l 1.6 cm. Cnh phi ca led hin th nm cch cnh tri ca led hin th nhit 1 khong 1 cm. Cnh phi ca LED 7 thanh hin th nhit cch vin led n 1 khong 1.9 cm. Cnh di ca hng th 2 cch vin led n 1 khong 1.2 cm.

Hnh 2. Mt hin th ng h

* Gc trn bn phi l logo ca nhm. * mt bn bn trn (mt 18.2 cm x 10cm) mt hin th l hng nt bm bao gm 5 nt bm dng iu chnh gi v hn gi ln lt l cc nt ALARM, OK, DOWN, UP, MODE* mt bn phi mt hin th (mt 10cm x 8.4cm) l nt bm BB iu chnh ch nhy ca LED n vin xung quanh* LED n vin xung quanh dng LED n mu xanh lc, cn cc LED 7 thanh dng cc LED mu . * Ch gi hin th l ch 24h* Ngun dng cho mch l ngun 5V* Sn phm c thit k ph hp vi vic t c nh, la chn s dng linh kin sao cho mc gi thp nht c th* Thi gian hon thnh d kin: 2 thng* D kin khi hot ng trong ch bnh thng n LED n s hot ng c trong 5000 gi.* Cm bin nhit hot ng tt nht trong di nhit t 10 n 500C*Gi thnh d kin: 600. 000VND/1sp2. Yu cu chc nng

* ng h c chc nng hin th gi pht, ngy thng nm v nhit * Khi bm nt MODE s ln lt chuyn sang ch iu chnh gi, pht, ngy, thng nm, s dng nt UP, DOWN iu chnh, n nt OK tr li. * Khi n nt ALARM s chuyn sang ch hn gi, s dng nt MODE iu chnh la chn gi hoc pht, s dng 2 nt UP, DOWN iu chnh n gi cn hn, bm nt OK kt thc v tr li ch hin th gi pht. * Cho php hn gi bng nt bm, khi n gi s m thanh tittit qua loa c tch hp sn, sau khi bm nt OK th s dng ku hoc sau khi ku c mt pht ng h s t ng dng ku. * Cc ch nhy ca LED vin: - Hiu ng 1: Tt c u sng. - Hiu ng 2: Sng so le cch 2 LED 1.- Hiu ng 3: Sng ln lt theo chiu cng chiu kim ng h, sau khi sng ht mt vng s tt ln lt cng theo chiu cng chiu kim ng h. * Khi bm nt BB cho php iu chnh cc hiu ng ca LED vin xung quanh. Bm mt ln s chuyn sang ch 1, khi bm ln 2 s chuyn sang ch sng 2, khi bm thm ln na s chuyn sang ch th 3, bm ln th t th tt c cc n u tt. III. Thit k h thng

1. Thit k s khi

Hnh 3. S khi mch ng h vn nin

2. S chi tit tng khi

a. Thit k khi ngun

Hnh 4. S khi ngun

Nguyn l hot ng ca khi ngun: Ngun vo sau khi i qua b phn lc nhiu s c a vo IC n p v c bin i, sau s c lc nhiu mt ln na. Kt qu l u ra ta s c in p mt chiu 5V v 1 dng in i nui mch in.

b. Thit k khi iu khin

* Khi iu khin ngy gi:

Hnh 5. S khi iu khin ngy gi

Nguyn l hot ng: Khi ngun cung cp in p v dng cho cc khi thi gian thc, khi vi iu khin 1 v khi ghi dch. Khi thi gian thc a tn hiu vo khi vi iu khin 1 khi ny x l, sau khi x l, thng tin s c chuyn ti khi ghi dch chuyn d liu thnh dng s v sau s c chuyn sang khi hin th hin th thnh ngy gi.

* Khi iu khin nhit v LED vin

Hnh 6. S khi iu khin nhit & LED vin

Nguyn l hot ng: Khi ngun cp ngun cho cc khi: khi cm bin nhit , khi x l tn hiu v khi hin th. Khi cm bin nhit c tc dng cm bin nhit ca mi trng xung quanh, sau truyn ti khi x l tn hiu, khi x l s x l tn hiu ny v c nhng hiu ng nhy LED ta nhp vo trong chip, sau khi x l xong khi x l s truyn n khi hin th, hin th ra nhit mi trng xung quanh hin gi l bao nhiu v cc hiu ng ca LED vin m ta lp trnh. c. Khi hin th

Hnh 7. S khi hin th

Nguyn l hot ng: Tn hiu sau khi c x l cc khi vi iu khin 1 v 2 s c chuyn n cho khi hin th hin th thnh s. Sau khi nhn tn hiu khi vi iu khin 1, khi hin th s hin th ngy gi ra cc LED 7 thanh, cn sau khi nhn tn hiu ra khi vi iu khin 2, khi vi iu khin s hin th nhit ra LED 7 thanh v cc hiu ng nhy ra cc LED n vin xung quanh.

3. La chn phng n ti ua. Khi ngunPhng nTiu ch nh giim trung bnh

Gi c phc tpChu dng

S dng LM7805Gi r. 2000vnCn adapter- Mch n gin, d dng lp t, hiu qu cao.Dng ti a m LM7805 chu c l 1A.9.3/10

im: 9/10im: 10/10im: 9/10

S dng LM2576Gi cao, 8000vnCn adapterMch phc tp hn, yu cu c kinh nghim s dng v dng ra kh ln, d hng linh kin trong mchC th chu c dng 3A.8.7/10

im: 8/10im: 8/10im: 10/10

Bng 1. La chn phng n ti u khi ngun

b. Khi iu khin

Phng nTiu ch nh giim trung bnh

Gi cTc Dung lngMch np

S dng IC AT89C52- Gi: 13.000 VN

0 - 24MHz

RAM: 128 Byte ROM: 4KB

Ch np song song, khng cho php np ngay trn bo mch. 9/10

-im: 10/10im: 9/10im: 10/10im: 7/10

S dng IC AT89S52Gi: 16.000 VN

0 - 33MHz

- RAM: 128 Byte- ROM: 4KB

Ch np ni tip, cho php np ngay trn bo mch9. 3/10

im: 9/10im: 8/10im: 10/10im: 10/10

Bng 2. La chn phng n ti u khi iu khinc. Khi tn hiu vo


Gi c phc tpKch thc

S dng LM35- Chi ph cao hn do phi c IC dch tn hiu s i cng- Gi c: khong 40k/1 mchPhc tp hn do vi iu khin khng h tr ADC nn cn thm IC ADC giao tip vi LM35Mch cng knh, km gn nh

7/10

im: 7/10im: 7/10im: 7/10

S dng IC cm bin nhit DS18B20Chi ph thp, khong 20k/1 IC

n gin hn do tch hp sn b ADC v b truyn thng 1 dy cho php kt ni vi vi iu khin ch bng mt chnMch gn nh hn do c th kt ni trc tip vi vi iu khin ch bng mt chn

10/10

im: 10/10im: 10/10im: 10/10

Bng 3. La chn phng n ti u khi cm bin nhit

d. Khi hin th


Kch thc(h s 0.7)Chi ph(h s 0.3)

LED 5mmKch thc ln, chim nhiu khng gian ca mch

Chi ph thp hn: 350VN/1 LED

8. 6/10

im: 8/10im: 10/10

LED 3mmKch thc nh hn, va vi kch thc ca mch

Chi ph cao hn: 400VN/1 LED

9. 4/10

im: 10/10im: 8/10

Bng 4. La chn phng n ti u khi hin th-LED vin

Phng nGi c phc tpim trung bnh

LED 7 thanh 1 sGi r 2. 500VN/1 LED

Cn phi dng nhiu IC 595 n nh ngun, khin cho mch cng knh

9. 3/10

im: 10/10im: 8/10

LED 7 thanh 2 s v 4 sGi cao hn mt cht 5. 000VN/1 LED

Cn t IC 595 hn, do mch s gn nh v n gin hn

9. 6/10

im: 9/10im: 10/10

Bng 5. La chn phng n ti u khi hin th-LED 7 thanh

e. D tr chi ph: Danh mcTn linh kinS.lngn giThnh tin

Khi ngunIC LM 780522. 5005.000

Adapter 9V140.00040.000

Cc linh kin khc--10.000

Khi iu khinIC 89S52216.00032.000

IC 74HC595N103.00030.000

IC DS18B20120.00020.000

IC 1307110. 00010.000

Cc linh kin khc20.000

Khi hin thLED n10015015.000

LED 7 thanhLoi 0.56 inch4-50.000

Loi 0.36 inch11-

Cc linh kin khc80.000

Lm mch in--30k/1dm290.000

To v sn phm---70.000

Pht sinh (10%)47.000

Tng chi ph520.000

Bng 6. D tr chi ph

3. Phn tch nhn lc

Thnh vinim mnhim yuThi gian rnh

1. Hong Tun Linh- C k nng giao tip v thuyt trnh tt

- C kinh nghim trong vic lm vic vi cc phn mm vn phng nh MSW, MSP, MSV. - Thi gian rnh t do thng xuyn tham gia cc hot ng on-Hi

- thc gi gic cn cha tt, hay n mun. - Chiu t2, chiu t3, ngy t4, ngy t5, ngy t7. - Tuy nhin thi gian rnh cn ph thuc vo thi gian ca cc cng vic on-Hi.

2. Nguyn Th Nam- C kinh nghim trong vic thao tc vi cc phn mm m phng mch nh Proteus, Altium Designer- C t cht lnh o- Kh nng thuyt trnh km- C t cht lnh o tuy nhin vn cn yu, trong nhiu trng hp vn cha t ra c t cht ca ngi lnh oChiu t2, chiu t3, ngy t4, ngy t5, ngy t7

3. Nguyn Thnh t- C kinh nghim trong vic lp trnh v lm mch. - Hn mch p- Nh xa, i li khng thun li- Thi gian rnh t. Chiu t2, chiu t3, ngy t4, ngy t5, ngy t7

4. Nguyn Vn Long- C tnh cn thn, t m, kho tay

- C trch nhim vi cng vic c giao. - Lm vic chm chp, thiu s nhanh nhn

- Kh nng giao tip, thuyt trnh km. Chiu t2, chiu t3, ngy t4, ngy t5, ngy t7

5. Vng ng Huy- C kinh nghim trong vic thao tc vi cc phn mm m phng mch nh Proteus, Altium Designer

- Nh xa, i li khng thun tin

- Hay nhanh u ong, hay mt tp trung. Chiu t2, chiu t3, ngy t4, ngy t5, ngy t7

Bng 7. Bng nh gi nhn lc

5. Phn cng cng vic

STTCng vicM tThi gianPhn cngu raMi lin h

1Tm kim tngTm kim, la chn tng26/11/14(1 ngy)

AllChn c tng tham gia cuc thi

2Lp k hoch-Lp k hoch trn MSP-Phn cng cng vic cho cc thnh vin27/11/14(1 ngy)AllFile lp k hoch bng MSPSau khi cng vic 1 kt thc

3M t ti-M t ti, tnh sng to v ng dng.-Vit trn Word28/11/14(1 ngy)HuyFile Word m t tiSau khi cng vic 2 kt thc

4M t bi ton (Phn tch yu cu chc nng, yu cu phi chc nng)-Phn tch yu cu chc nng.-Phn tch yu cn phi chc nng.-Trnh by trn Word29/11- 1/12/14(2 ngy)AllFile Word trnh by yu cu chc nng, yu cu phi chc nngSau khi cng vic 3 kt thc

5V s khi ca mchV s khi ca mch trn MS Visio1/12/14(1 ngy)LinhFile MSV cc khi ca mchCng kt thc vi cng vic 4

6S chi tit cc khi-V s chi tit khi ngun v khi hin th.-Nguyn l hot ng.-La chn linh kin1/12- 2/12/14(2 ngy)Nam-Flie MSV s khi chi tit cc khi.

-File Word nguyn l hot ng ca tng khi v bng nh gi la chn linh kin, c tnh chi ph ca tng khi.

Bt u cng cng vic 5

-V s chi tit khi iu khin ngy gi -Nguyn l hot ng.-La chn linh kin1/12- 2/12/14(2 ngy)t

-V s chi tit khi iu khin LED vin v nhit .-Nguyn l hot ng.-La chn linh kin1/12- 2/12/14(2 ngy)Long

7c tnh chi ph-Tm hiu gi linh kin, gi t mch in v gi nguyn liu lm v mch.-Vit Word c tnh chi ph3/12- 4/12/14(2 ngy)AllFile Word c tnh chi phSau khi cng vic 6 kt thc

8Hp, tng kt, vit bn Word n-Tp hp cng vic ca cc thnh vin.-Vit n trn Word5/12/14(1 ngy)AllBn Word ca nSau khi cng vic 7 kt thc

9Hon thin n gi mail Ban t chc-Hon thit n.-Gi mail cho Ban t chc6/12/14(1 ngy)Huy, NamBn mm ca n vi y cc ti liu Ban t chc yu cuSau khi cng vic 8 kt thc

10M phng-V s nguyn l trn Proteus.- iu chnh code khi iu khin ngy gi.-Vit code khi iu khin LED vin v iu chnh code khi nhit .8/12- 10/12/14(3 ngy)Nam, Thnh t, Huy, LongFile m phng trn proteus.Code khi iu khin ngy gi v khi iu khin LED vin v nhit .Sau khi cng vic 9 kt thc

11M phng trn Breadboad-Mua linh kin.-Np code v test mch trn boad11/12- 15/12/14(5 ngy)AllMch chy n nh trn boadSau khi cng vic 10 kt thc

12Lm mch-t mch in-Hn linh kin-Np code v test mch16/12/14- 12/1/15(24 ngy)AllMch chy ng inhSau khi cng vic 11 kt thc

13Hon thin sn phm-Lm slide thuyt trnh.-Lm v sn phm.-Quay video chy th sn phm.-Hon thin n13/1- 21/1/15(8 ngy)All-Slide thuyt trnh.-Sn phm hon thin.- nSau khi cng vic 12 kt thc

Bo v n

Bng 8. Bng cc cng vic chnhIV. Thit k chi tit tng khi

1. Thit k khi ngun

Cc linh kin c s dng trong khi

Hnh 8. IC LM 7805 Hnh 9. T gm 104

Hnh 10. Adapter 12V 1A Hnh 11. Con 2

S nguyn l khi ngun

Hnh 12. S nguyn l khi ngun

2. Thit k s khi iu khin

Khi iu khin 1Cc linh kin chnh cn dng

Hnh 14. DS 1307 Hnh 15. Thch anh 32.768 KHz

Hnh 16. Thch anh 12MHz Hnh 17. Transistor C1815

Hnh 18. Resistor 1k Hnh 13. IC AT89S52

Hnh 19. Pin 3V Hnh 20. T gm 33p

S nguyn l khi iu khin 1

Hnh 21. S nguyn l khi iu khin 1

Khi iu khin 2

Cc linh kin chnh cn s dng

Hnh 22. IC AT 89S52 Hnh 23. Cm bin nhit DS 18B20 Hnh 24. Thch anh 12 MHz Hnh 25. IC 74HC595

Hnh 26. Tr 330 Hnh 27. Nt bm 2 chn

S nguyn l khi iu khin 2

Hnh 28. Khi iu khin 2

Hnh 29. Khi ghi dch iu khin led vin

4. Khi hin th

Cc linh kin chnh cn dng

Hnh 30. Led 7 thanh 0.36 i Hnh 31. Led 7 thanh 0.36 n

Hnh 32. Led 7 thanh anode chung 0.56 Hnh 33. Led n phi 3

S nguyn l khi hin th

Hnh 34. Hin th gi pht

Hnh 35. Hin th th ngy thng nm

Hnh 36. Hin th nhit V. M phng mch1. M phng khi ngy gia. M phng trn phn mm Proteus

Hnh 37. M phng khi ngy gib. M phng trn thc t

Hnh 38. M phng khi ngy gi trn thc t

2. M phng khi nhit v led vin

Hnh 39. M phng khi led vin v nhit trn phn mm Proteus3. Cc vn gp phi trong qu trnh lm mch v cch gii quyt

Khi ngy gi khi m phng trn breadboard (lp theo s nguyn l trn Altium) khng hot ng Nguyn nhn: Do cha hiu k v nguyn l nn khi v s nguyn l t Proteus sang Altium b sai (chn nhm linh kin). Mch xc nh mc 1 nhng li s dng transistor tch cc mc 0. Do tip xc trn board khng tt v phi dng qu nhiu dy khi ni LED 7 thanh v cc linh kin khc nn c th mch b ri v khng ni tip (h mch). Cch gii quyt: + Chuyn Transistor A1015 kch mc 0 thnh Transistor C1815 tch cc mc 1+ Kim tra kt ni bng ng h vn nng, kim tra cc linh kin kt ni ng theo s nguyn l hay cha.

Khng iu chnh c cc ch khi n nt MODE Nguyn nhn: code vit cho khi ngy gi thiu hm DELAY khi kim tra nt bm MODE Cch gii quyt: thm hm DELAY vo on code kim tra khi nt bm MODE c bm.

Khi chung th chung ku mt pht mi dng, khng th iu chnh bng nt bm. Nguyn nhn: Do code khng kim tra khi nt bm OK c bm kt thc ch hn gi. Cch gii quyt: Thm cu lnh kim tra nt bm OK khi ang ch hn gi kt thc ch hn gi.

LED nhy giy nhy khng ng (khng to c xung 1s) Nguyn nhn: C th l do chy IC thi gian thc DS1307 hoc l cc chn ca DS1307 cha c ni ng theo s nguyn l, hoc l do s nguyn l b sai. C th l do IC AT89S52 b hng v khng th kt ni c vi IC thi gian thc nn mch khng chy ng. C th do code b vit sai nn mch chy khng ng. C th do mch in b li nn khng kt ni c cc linh kin. Cch gii quyt: + Kim tra xem IC thi gian thc DS1307 c ni ng theo s nguyn l hay cha, nu cha th phi sa li.+ Kim tra code np cho IC 89S52 c np code ng hay cha, kim tra xem IC c b hng hay khng.+ Kim tra li mch in bng ng h vn nng, sa li cc li nu c nh cu dy b t, ct dy tha, hoc l c th lm li mch in bng tay.

Led hin th nhit b nhp nhy v khng hin th ng Nguyn nhn: do chn 31 ca IC trn mch in cha c ni vi ngun Cch gii quyt : cu dy trn mch in, ni chn 31 ca IC vi ngun.

Hp ng h kh khoan v ca bng tay m m bo chnh xc kch thc Cch gii quyt: Thit k v hp trn AutoCAD nh cc CLB m hnh dng my khoan laze ct v hp. C nh mch vi v hp bng bt vt, kt ni cc mt bn bng keo dn 502.

VI. Hon thin sn phm

Cc cng vic hon thin sn phm bao gm ng hp, lp rp v vit hng dn su dng cho sn phm.Khi iu khin v led nhy vinHnh 40. Khi iu khin led nhy vin v cm bin nhit

Hnh 41. Khi ghi dch 74HC595 iu khin led vin

Hnh 42. Cc thanh led vin chiu di v chiu rng

Hnh 43. Ch sng th nht

Hnh 44. Ch sng th 2

Hnh 45. Ch sng th 3

Khi iu khin ngy thng nm Hnh 46. Khi iu khin ngy gi

Khi hin th

Hnh 47. Cc thanh led hin th gi pht v th ngy thng nm

Hnh 48. V hp ca sn phm

Hnh 49. Sn phm sau khi hon thin

Nhn xt v sn phm ca nhm sau khi hon thnh : V l sn phm u tay ca nhm nn mu m cn cha p, v ca sn phm cn hi th. Kch thc sn phm hi to V mch c chia ra thnh nhiu khi nn kh l cng knh trong vic lp t, lm cho khng gian bn trong mch rt cht hp, kh khn cho vic ly ra sa cha. Mch ngun 7805 b nng khi s dng trong thi gian di nn nh hng n cm bin nhit bn trong mch, lm cho kt qu khng chnh xc. Cc nt bm cn khng c nhy, i khi phi bm nhiu ln mi c. Do cc in tr ngn dng hi thp nn cc n led vin hi sng qu, lm la mt ngi s dng

Nhng ci tin d kin sau ny ca sn phm : Lm li v hp sao cho sn phm trng chuyn nghip hn v thu ht khch hng hn. S dng linh kin dn thay cho linh kin cm gim thiu ti a kch thc ca sn phm. Thit k li cc khi sao cho hp l nht tit kim c ti a khng gian bn trong ca sn phm, tin li cho vic tho lp sa cha. Thit k li khi ngun sao cho khng nh hng n cc khi khc, c bit l cm bin nhit iu chnh li gi tr ca tr hn dng iu chnh li sng ca led vin, hoc l c th dn giy knh bng nn gim sng. iu chnh li cc nt bm sao cho nhy nht c th. iu chnh li ch xem gi thnh 12h hay 24h ty theo s thch ca khch hng bng nt bm. C th vit li cc hiu ng nhy led vin, s lng led vin theo yu cu ca khch hng. VII. Cm nhn v cuc thi Project tt nhtCuc thi Project tt nht l mt cuc thi v cng l th, b ch v thit thc i vi nhng sinh vin ngnh in t-Vin thng chng ti. c tham gia cuc thi, chng ti hc c rt nhiu iu b ch v thu c rt nhiu kinh nghim v lm mch v cc k nng mm khc nh lm bo co, thuyt trnh, lm project, kh nng lm vic nhm, m bt k mt k s no cng khng th khng c. Khng nhng th n cn gip chng ti gy dng c tnh on kt gia cc thnh vin, khng ch trong nhm m cn c cc nhm khc na. c nhng giy pht tng chng cng vic khng th hon thnh c, c nhng lc chng ti mun bung xui nhng nh c s ng lng ca cc thnh vin cng nhng li ng vin, s gip ca nhng ngi bn khc, chng ti cui cng cng c th hon thnh c sn phm ca mnh. Cuc thi lm tng cng, cng c thm tnh yu i vi ngnh in t-vin thng, gip chng ti tng thm vn hiu bit v cc linh kin in t, t c thm ng lc hc tp cho tht tt.

Bn bo co ca nhm Big Bird n y l ht. y l ln u tham d mt d n nh cuc thi Project tt nht nn chc chn khng th trnh c nhng sai st trong qu trnh lm. Do vy nhm rt mong nhn c nhng nh gi, nhn xt, gp thng thn ca nhng ngi c rt kinh nghim cho nhng ln sau.

Xin trn trng cm n

VIII. Ph lc1. Danh mc hnh vHnh 1. Kch thc sn phm7Hnh 2. Mt hin th ng h9Hnh 3. S khi mch ng h vn nin11Hnh 4. S khi ngun11Hnh 5. S khi iu khin ngy gi12Hnh 6. S khi iu khin nhit & LED vin12Hnh 7. S khi hin th13Hnh 8. IC LM 7805 Hnh 9. T gm 10420Hnh 10. Adapter 12V 1A Hnh 11. Con 220Hnh 12. S nguyn l khi ngun21Hnh 13. IC AT89S5221Hnh 14. DS 1307 Hnh 15. Thch anh 32.768 KHz22Hnh 16. Thch anh 12MHz Hnh 17. Transistor C181522Hnh 18. Resistor 1k22Hnh 19. Pin 3V Hnh 20. T gm 33p23Hnh 21. S nguyn l khi iu khin 123Hnh 22. IC AT 89S52 Hnh 23. Cm bin nhit DS 18B2024Hnh 24. Thch anh 12 MHz Hnh 25. IC 74HC59524Hnh 26. Tr 330 Hnh 27. Nt bm 2 chn24Hnh 28. Khi iu khin 225Hnh 29. Khi ghi dch iu khin led vin25Hnh 30. Led 7 thanh anode chung 0.36 i26Hnh 31. Led 7 thanh anode chung 0.36 n26Hnh 32. Led 7 thanh anode chung 0.5626Hnh 33. Led n phi 326Hnh 34. Hin th gi pht26Hnh 35. Hin th th ngy thng nm27Hnh 36. Hin th nhit 27Hnh 37. M phng khi ngy gi28Hnh 38. M phng khi ngy gi trn thc t28Hnh 39. M phng khi led vin v nhit trn phn mm Proteus29Hnh 40. Khi iu khin led nhy vin v cm bin nhit 31Hnh 41. Khi ghi dch 74HC595 iu khin led vin32Hnh 42. Cc thanh led vin chiu di v chiu rng32Hnh 43. Ch sng th nht33Hnh 44. Ch sng th 233Hnh 45. Ch sng th 334Hnh 46. Khi iu khin ngy gi34Hnh 47. Cc thanh led hin th gi pht v th ngy thng nm34Hnh 48. V hp ca sn phm35Hnh 49. Sn phm sau khi hon thin35

2. Danh mc bng biuBng 1. La chn phng n ti u khi ngun14Bng 2. La chn phng n ti u khi iu khin14Bng 3. La chn phng n ti u khi cm bin nhit 15Bng 4. La chn phng n ti u khi hin th-LED vin15Bng 5. La chn phng n ti u khi hin th-LED 7 thanh16Bng 6. D tr chi ph16Bng 7. Bng nh gi nhn lc17Bng 8. Bng cc cng vic chnh20

3. Ngun tham tham kho:

http://mualinhkien.vnhttp://alldatasheet.comhttp://codientu.org http://banlinhkien.vnKhi thi gian thc

Khi hin th

Khi vi iu khin 1

Khi ngun

text

Khi ngun

Khi vi iu khin 2

Khi cm bin

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