Tg Thi Kliu Oanh vd Dtg 86(10): 61 -65 Tap chi KHOA HOC & CONG NGHE THIET KE, CHE TAO BO DEM SAN PHAM StT DUNG VI DIEU KHIEN 8051 Ta Thj K i l u Oanh Trudng Dai hoc Su-pham-DH Thdi Nguyen TOMTAT "• Trong bai bao nay, ehiing toi trinh bay ve viec thiet ke, che tao bo dem san pham sii' dung vi dieu khien 8051 So ciia bg dem dugc thiet ke gom day dii cac khoi tir khoi nhan tin hieu vao, xii' ly tin hieu, lay tin hieu tir khoi xii' ly trung tam dua hien thj ket qua dem tren Led Trong do, vi dieu khien 8051 la khoi xir ly trung tam dam nhan nhiem vu xu ly tin hieu, chong nhieu, dem va giai ma ket qua dem Kha nang iing dung va tin cay ciia bg dem da dugc khang djnh bang mach dien thye nghiem Til' khoa: Bg dim san phdm, vi dieu khiin 8051, giai md hiin thi, chi tgo, mgch diin thiec nghiem DAT VAN DE Ty ddng dem sd lugng eac day truyen san xuat ty ddng, bai dd xe ty ddng, cae cua hang, sieu thj la mdt khau quan trgng de thye hien qua trinh ty ddng hda Vi vay, viec xay dyng mdt bd dem san pham cd tinh linh boat mang kha nang u'ng dung eao Cd nhieu phuong phap de xay dyng bg dem san pham, mdt phuong phap don gian la su' dung phan tii' nhd nhj phan trigger, nhien sd san pham can dem ldn hoac can thay ddi linh boat thi mach dem sir dung phan tir nhd se trd nen phiic tap, tham chi khdng thye bien dugc Khi dd, vi dieu khien duge sir dung lam phan tir trung tam Vdi sy linh boat va kha nang lap trinh cao khdng nhung nd cd the thay the cho trigger thye hien chiie nang dem ma cdn thye hien ea nhiem vy giai ma ket qua dem sang ma led de dua hien thj Vdi viec tim bieu ve vi dieu khien AT 89C51''•'', phuong phap thiet ke bd dem, mach giai ma, hien thj''^'', cac mach dien tii' irng dung, linh kien dien tu''*'"'''*'''', irng dyng ciia vi dieu khien mdt sd mach dien''"', ehiing tdi da nghien ciru va che tao duge mdt bg dem san pham sir dyng vi dieu khien hg 8051 vdi khdi nhan tin hieu vag bang chuyen hda CO' cd xir ly xung bang phan mem, hien thj ket qua dem bang led theo phuong phap dua du' lieu tryc tiep qua bd dem du lieu va khuech dai cdng suat Md hinh mach dien that da dugc che tao va thu' nghiem cdng, de tai hii'a hen nhCmg u'ng dung viee ty dgng dem sd lugng san pham khau ddng gdi tren cac day truyen ty ddng, bai xe ty ddng va nhieu u'ng dung khac THIET KE, CHE TAO BO DEM SAN PHAM So' bo dem So' dd cau tnic ciia bd dem IJ i':>i c i p KJlOl llll.lli till lucn Viio apioji D'.' I J h i ICll tJli t i n i m liiiii Hinh So cau triic ciia bg dem Khdi nhgn tin hieu vdo Khi ed mdt san pham di qua, khdi thye hien nhiem vu ciia mdt cam bien, nhan biet san pham va chuyen tin hieu dien dua vao khdi xii' ly trung tam Cd nhieu phuong phap de nhan biet san pham nhu sii' dung chuyen hda co' khi, sii' dung didt hdng ngoai hay sdng sieu am Phat Thu R2 Dii lien deii \'E)K D w a) Mach diing didt hong ngoai Hinh Mach nhan tin hieu vao Tel: Ta Thi Kliu Oanh vd Dtg lieu tir vi dieu khien khoi hien thj nhu phuang phap dua dtr lieu tryc tiep, phuang phap chdt dtr lieu, phuong phap quet dgng +5V ± 86(10): 61 -65 Tap chi KHOA HOC & CONG NGHE D'^ DIETJ KHIEN b) Mach dimg chuyen hda ca Phuo'ng phap sir dung chuyen hda ca cd uu diem hon eac phuoiig phap kJiac d sy do'n gian va kha nang chdng nhieu tdt, d phuang phap hien tug'ng xung van thud'ng xuyen dien ra, song dieu lai de dang khic phyc dugc bdi mdt mach dien phan cu'ng do'n gian la sir dyng mdt tu dien cd dung lug'ng phii hgp ndi song song vdi chuyen mach co' hay bdi mdt sd cae cau lenh phan mem viet cho vi dieu khien Phuong phap chdt dtr lieu va phuong phap quet ddng cd uu diem la tiet kiem tai nguyen cila vi dieu khien, nhien chimg lai cd ban che ve tdc tac dgng, sang cua Led va sy phirc tap cua mach dien phan cirng va phan mem Hon nua, de tai vi dieu khien chi thye hien nhiem vu dem san pham vdi dai dem tir dem 999 san pham, nen lya chgn phuong phap dua du' lieu tryc tiep de hien thj la phuong phap tdi uu Theo phuang phap nay, khdi hien thj dugc thiet ke sir dung led Katdt chung dugc ndi vdi cac chan ciia cac cdng PO, PI, P2 cua vi dilu khiln thdng qua bg dem dir lieu 74245 va bd dem cdng suat 2803 1£3 Khdi xic ly trung tdm Khi dti' lieu tir khdi nhan tin hieu dua tdi dau vao khdi xii' ly trung tam, khdi su' ly trung tam se lam nhiem vu dgc, xii' ly du' lieu va dua dfr lieu da xii' ly kbdi hien thj thdng qua mdt bd dem dir lieu va bd dem cdng suit Toan bd boat ddng cua khdi dugc thye hien bdi vi dilu khiln 8051 Rl R2 ' — n Ki R3 •— a) •*12v Khi dti' lieu duge dua vao vi dieu khiln bdi chan P3.3, vi dieu khien lam nhiem vu dim san pham, giai ma ket qua va dua cac chan cua cdng PO (PO.l, P0.2, , P0.7), cdng PI (Pl.O, Pl.l, ,P1.7),cdngP2(P2.0,P2.1, ,P2.7) - Cdng PO ( til' PO.l, P0.2, , P0.7); dua du lieu hien thj ehu' sd hang tram T Lee IC 7 - ' words: product counter microcontroller 8051 decoder for displaying, construction, experimental circu ' Tel- es ... co'' hay bdi mdt sd cae cau lenh phan mem viet cho vi dieu khien Phuong phap chdt dtr lieu va phuong phap quet ddng cd uu diem la tiet kiem tai nguyen cila vi dieu khien, nhien chimg lai cd ban che... Toan bd boat ddng cua khdi dugc thye hien bdi vi dilu khiln 8051 Rl R2 '' — n Ki R3 •— a) •*12v Khi dti'' lieu duge dua vao vi dieu khiln bdi chan P3.3, vi dieu khien lam nhiem vu dim san pham, giai... san pham chi tao thye nghiem bg dim su dung vi dilu khiln AT89C51 (ben va mat trudc bg dim) Viet chuang trinh phdn mem Chuang trinh phan mem cho 8051 vilt bing ngdn ngu'' assembly Tren thye tl cd