Thiết kế cải tiến và chế tạo thiết bị kiểm định phanh ô tô MB6000

NGHIEN CQU-TRAO Dpi V-THIET K i CAI TI§N VA CH^ TAO THI^T Bj KigM DINH PHANH TO MB6000 DESIGNING IMPROVE AND MANUFACTURE OF AUTOMOTIVE BRAKE TESTING EQUIPMET MB6000 TS Le Ba Khang Bd mdn Ky thuat td, Trudng Dai hgc Nha Trang TOM TAT Ndm 2009, khuon kho hpp tdc dao tgo vai Cong hda Sec, phia Ban trang bi cho nganh Cong nghe ky thugt o td Trudng Dai hpc Nha Trang thiet bi kiem dinh phanh td MB6000 Thiit bi hdng Beissbarth cua Due che tgo Sau thai gian dua vdo hogt ddng, thiet bi bdc Id mpt sd han che so lieu chi duac dpc dua vdo kim chi, hien thi tren tit ddng hd, khdng cho phep in dn, luu trie Nhdm phat huy tinh ndng ky thugt, ndng cao hieu qud khai thdc thiet bi, chiing tdi khdo sat chpn phuang dn va tu thiet ke, che tgo board mgch thu nhdn xir ly, ddn truyen dir lieu den cdng COM ket ndi vdi mdy tinh Nho phdn mem Visual Basic cai ddt san PC md cdc thdng so kiem dinh he thdng phanh td dupe xir ly chuyen ddi, hien thi trung thuc tin cdy len mdn hinh mdy tinh, de ddng cho phep in dn, luu trir Tit khoa: Kiem dinh, linh kien dien tir, kit ndi ABSTRACT In 2009, within the framework of training cooperation with the Czech Republic, you equiped for Automotive Engineering Department in Nha Trang University of brake tester equipment MB6000, is produced by Beissbarth company of Germany After their commissioning, the device revealed some limitations because the read-only data based on sewing, shown on the clock Cabinet, not allow printing and storage To promote technical features, improving the efficiency of mining equipment, we survey, select the plan and design, circuit board fabrication to acquisition, processing and data leads to the COM port connect to computer By the Visual Basic software installed in PCs, the testing parameters of brake systems is processed, converted, displaying honesty, trust on the computer screen, allowing easy printing and storage Keywords: Testing, electronic components, connect TAP CHi CO KHi V I £ T NAM, Sd nam www.cokhivietnam.vn 2014 NGHIEN CUfU-TRAO D | D A T V A N D E Thiet bi kiem dinh phanh d td MB6000 (bd phan eo ban trinh bay tren hinh 1), hang Beissbarth eua Due san xuat, dugc Cdng hda Sec frang bi cho nganh Cdng nghe ky thuat d td, Trudng Dai hpc Nha Trang, nam 2009 Thidt bi cho phep kiem dinh d td vdi tai frgng Idn nhdt 2,5 tan, tai frgng de Idn nhat 4,0 tan Thyc nghiem, dya fren viec khao sat thyc te thiet bi MB 6000 (cdu tao, nguyen ly trinh bay tai muc 2.2), qui trinh, tieu chudn kiem dinh phanh d td [3] va tir vide phan tich chpn phuong an, tien hanh thiet ke, ehe tao board mach linh kien dien tir de thu nhan, xu ly, truygn dan dii lieu, ket ndi thigt bj MB6000 vdi may tinh, tien hanh chay thir, kiem fra, digu chinh va - phan tich sd lieu d to kidm dinh Thyc te, boat dpng thiet bi chi cho phep dgc ket qua dya vao sd lieu kim chi, hien thi tren tu ddng hd, mat khac khdng eho phep luu trii, in an sd lieu 2.2 C^u t^o, nguyen ly hoat dgng ciia thiet bi MB 6000 [2] Nham phat huy tinh nang ky thuat, nang cao hieu qua khai thac thiet bi, tao dieu kien thuan loi frong quan ly d td kiem dinh va phye vu day hpc, chung tdi tien hanh khao sat, phan tich chpn phuang an va tu thiet kg, ehg tao bd phan thu nhan, xir ly, truyen dan, ket ndi MB6000 vdi may tinh de hien thi, luu trii dit lieu, in dn PHU'ONG PHAP NGHIEN CUtJ 2.1 Phvong phap nghien ciru - cdu tao: Thidt bi MB 6000 gdm cd be thu, bang thir, tii ddng hd va dieu khien tir xa + Til ddng hd, gdm: bd nguon - bidn ap, day va cac dSu ndi, motor budc ed gan kim ehi + Dieu khien tir xa cam tay-remote: Bao gdm cac phim chiic nang dung dd lua chgn chg do, dieu khien sy hoat ddng cua thidt bi -I- Be thu: Trgn dd lap dat cd dinh, vung chdc bang thii, gdm bd mid (con lan), fruc trugt Dan ddng ru Id thdng qua truyen dgng xich eua hop giam tde gan vdi dpng ca dien •••Ill y^" '^"^*' ''\Pr a ^i^^i 45°Ei'^ oiibn Bf rim rnic miai ^Igggg/^ Hinh 1: Tu ddng hd (a), dieu khiin titxa (b) vd be bdng thu (c) cua thiet bi kiim dinh phanh td MB6000 TAP CHi CO KHi V I £ T NAM, Sd nam 2014 www.cokhivietnam.vn NGHIEN C U ( U - T R A D I - Nguyen ly hoat dong Tien hanh dua d td len bang thu, dieu khign cho ru Id quay, toe dp d td da dn dinh ngudi lai sd dap phanh (theo qui trinh kiem dinh phanh), liic banh xe giam tdc va dimg lai, true quay fran bi ddng va ed tdc dp quay rat cao so vdi tdc dp quay ciia banh xe (dudng kinh cua true quay fran rat nhd so vdi dudng kinh cua banh xe) nen true quay fran van tiep tuc quay, Hinh 3: Board mgch thu nhdn, xu ly truyen ddn die lieu dd se sinh sy trugt giiia true va banh xe Qua I) Zdc cdm trich dir lieu tif Motor budc; trinh dugc nhan bigt thdng qua Cam bien 2} Tu loc; 3) Bd chdt; 4) AT89C51; true trugt ed gan d dau true Khi tin hieu eua mot 5) ICMax 232; 6) Cdng COM; 7) Tu dien banh xe nao frong qua trinh phanh tao ndn dp trugt gidi ban thi bd xir ly se ngat mach ddng ca dien va ghi nhan ket qua lue phanh tai thdi diem May tinh PC dugc ehgn la loai thdng Gia tri lye phanh Cam bien lye phanh bao dung ve bd phanfrongtu ddng hd thdng qua kim chi Tai board mach, dii lieu (dang dii lieu KET QUA NGHIEN CUtJ VA THAO ciia motor budc) dugc chuyen vao zac cam (1), sau hai IC chot (3) se thu nhan va ehuydn tdi LU^ AT89C51 (4), tai day nhd chuong trinh ty vidt nap vao nd ma AT89C51 chuyen ddi sang ma 3.1 Khao sat, chon phirgng an va thiet ke, ch^ t^o board mach di ket n6i thiit bi vol may tinh ASC, rdi xuat dii lieu ehuydn dua tdi cdng COM vao may tinh- Nhd lap trinh Visual Basic cai dat Tidn hanh nghien ciiu, khao sat, phan tich san ma nd tiep nhan, xir ly va chuyen ddi hien thi va dya fren ca sd khoa hgc ket hgp tinh hgp ly, dii lieu Idn giao dien (hinh 4) cua man hinh PC chgn giai phap idy du lieu bang each frich tin Tir ed the luu tr& dii lieu vao cac d chgn hieu tir dudng truydn den motor budc cua ddng ciia may tinh hd chi thi (hinh 2) chuygn vg board mach cd vi didu khidn (hinh 3) dd xfr ly, din truyen len may 3.2 Thiet ke giao dien, viet phan mem cho may tinh tinh thdng qua cdng COM - Giao dien thiet ke trinh bay fren hinh 4, gdm phan hien thi gia tri va ten cac thdng sd (lye phanh, lech, tdng hieu qua phanh chinh, phanh tay), gia tri so sanh chudn (theo QCVN 09: 2011) [3], thang nam, bien sd xe kiem fra, kdt qua kiem dinh dat hay khdng dat, Tin hifu cam bien "1 1—1 • Chd tao board mach (hinh 3): 1 May linh | j Thiet bj laoii 1—rn - Su dung phdn mdm Visual Basic dd hidn thi dir lieu len may tinh Ma ngudn duge vidt dya fren cac phan cua giao dien thigt kl [4] Motor buoc ciia ddng b6 chi thj 3.3 Thu* nghiem Hinh 2: So dd gidi phdp truyen ddn vd kit ndi vdi mdy tinh Chay thu va kiem fra lye phanh d td: '^ TAP CHi CO KHi VIET NAM, Sd nam 2014 www.cokhivietnam.vn NGHIEN CUfU - TRAO OOl Getz -79A 03935, Nissan -79C 0332, Toyota -79C 0484, theo qui trinh ki6m dinh to hien hanh va Quy chuin Viet Nam 09: 2011 [3], kSt qua trinh bay tren hinh NHA TRANG UNIVERSnY CHUONG TRINH KIEM DINH PHANH TO NHA TRANG UNIVERSITY CHUONG TRINH KIEM DINH PHANH OTO MMlMimhKW " " l * w .m U1 ã ô' 1 ' TONQHEUOUtmiMITlYni -n Hinh 4: Giao dien hien thi dir lieu vd sd lieu kiem dinh phanh d td a) to Getz-79A 03935; b) td Nissan -79C 0332; c) to Toyota -79C 0484 NHA TRANG UNIVERSITY CHUONG TRINH KIEM DINH PHANH O TO 3.4 Thao ludn Trong qua trinh lUc phanh d td, ket qua dugc hien thi tren man hinh may tinh (hinh 4) vdi sd lieu trung thUc (phii hgp vdi chat lugng d td thdc te), de ki^m tra, theo ddi, thdi gian nhanh chdng, ddng thdi cd th^ in ^n, lUu trii vao may tinh Til ket qua nay, ho trg viec tu van ky thuat he thdng phanh va theo doi dinh ky d td kiem dinh, Tuy nhien, viec tU dpng hda chda hoan toan, phai nh^p trpng lugng cau va Itfc phanh tren ciing mot c^u cdn cd sii sai lech so vdi so lieu hien thi tren bang ddng ho cd 2-3% Sai so kha nhd, anh hudng khdng nhi^u ddn kit qua kiem dinh, cSn phai tiep tuc nghien ciiu, hoan thien chuong trinh tinh de khac phuc cac han che ndi tren va hiidng den chuyen giao ket qua nghien cdu cho ca sd cd sit dung thiet bi MB 6000 ciing dac diem nham nang cao higu qua kiem dinh phanh d td TAP CHi CO KHi V I £ T NAM, Sd nam www.cokhivietnam.vn 2014 NGHIEN CljrU-TRAOD(!)l K E T L U ^ Budc diu thyc hipn thigt kd cai tien va ehe tao, td hgp thidt bi kigm dinh phanh d td MB 6000 lam vide dn dinh, tin cay, de dang luu trii, in an dii lieu va giam duge phan kinh phi khdng phai nhap ngoai, ddng thdi phyc vu thiet thye viec day va hpc, nghien ciiu cua thiy trd nganh Cdng nghe Ky thuat td, Trudng Dai hpc Nha Trang • Ngay nhan bai: 05/4/2014 Ngay phan bien: 17/5/2014 Tai li^u tham khao: [1], Nguyin Tang Cudng, Phan Qudc Thang (2004), Cdu tnic vd lap trinh vi dieu khien hpc 8051, NXB Khoa hpc va Ky thuat [2] Hudng ddn su dung thiet bi kiem dinh phanh MB 6000, hang Beissbarth cua Diic va Cdng ty VietNet cung cap, 2009 [3] Quy chudn kiem dinh he thdng phanh d td Viet Nam 09: 2011, Bd Giao thdng Van tai [4], DELU Quang TuAn (2006), Hu&ng ddn viet chuong trinh lam todn bdng Visual basic 6.0, NXB Giao thong Van tai TAP CHi CO KHi VIET NAM, Sd nam 2014 www.cokhivietnam.vn ... trinh phanh tao ndn dp trugt gidi ban thi bd xir ly se ngat mach ddng ca dien va ghi nhan ket qua lue phanh tai thdi diem May tinh PC dugc ehgn la loai thdng Gia tri lye phanh Cam bien lye phanh. .. DINH PHANH TO NHA TRANG UNIVERSITY CHUONG TRINH KIEM DINH PHANH OTO MMlMimhKW " " l * w — ™.m U1 ã ô'' 1 '' TONQHEUOUtmiMITlYni -n Hinh 4: Giao dien hien thi dir lieu vd sd lieu kiem dinh phanh. .. ke trinh bay fren hinh 4, gdm phan hien thi gia tri va ten cac thdng sd (lye phanh, lech, tdng hieu qua phanh chinh, phanh tay), gia tri so sanh chudn (theo QCVN 09: 2011) [3], thang nam, bien