Xay dipng he thong xac thiPC SLP d u n g c d n g nghe nhan dang van tay
Construction System Authentication Using Fingerprint Identification Technology ..^
Ngay nhan bai: 10/12/2015 Ngay sCra bai: 25/02/2016 Ngay chap nhan dang: 27/03/2016
T6MTAT
Muc dich chinh cua bai bao nay la xay diing mot he thong td dong kiem soat va quan ty vao ra cua sinh vien tai phong hgc va phong thi trong cdc trddng d^i hgc bang phuang phdp diem danh sif dung dac diem n h | n dang sinh trdc hgc la dau van tay cua sinh vifen. Phtiong phap di^m danh truyen thdng mat nhieu thdi gian cila giao vien va hgc sinh, cung nhil viec kho kiem soat viec hgc ho, thi h6. Bdi bdo niy diia ra phdOng phap difem danh td dgng bang each sd hoa bang vi?c sii dung Module nhan dang van tay dien dung va cdp nhdt dfl li^u vd truyfen dd li?u ve trung tam bang Wifi sil dung module UART to Wifi. Co sis do lieu trUc tuyen giiip ngddi qudn ly d l ddng truy xuit, quan ly, bao cdo tinh hinh di hgc, di thi cUa hgc sinh, sinh vien.
H? th6ng gidp gidm khdi lilging cong viec phuc vu qua trinh qudn ly.
H§ thdng ddgc xay di^ng vdi gia thdnh vd tinh ndng phu hgp de d l ddng dp dyng vao nhieu trddng trong cd nddc.
Tit kh6a: Cdm bifen vdn tay, Module UART to Wifi, ESP8266 ABSTRACT
The main purpose of this paper is builduig a system of automatic control and management of access of students in classrooms and examination rooms in university attendance by means of identifying characteristics using biometrics the students fingerprint Attendance of tradition method takes longer time of teachers and students as weU as have a lot difficulties in management students learn for other students. This paper gives a method for automated attendance by using the digitized fingerprint recognition module capacitance and update the data and transmits the data to center used by Wi-Fi using UART to Wifi modules. Online database management helps people easily access, management and report students go to class, students take the examination. The system reduces the workload for the process management. The system is built with cost and features suited to easily apply to many schools in the country.
Keywords: Fingerprint, UART to Wifi, ESP8266
ThS. Pham Anh Vu, ThS. Viidng Thi Dung
Dai hgc Xay Dilng, Email: [email protected], Tel: 0904970437
Pham Anh Vu, ViTdng Thj Dung
1.Gidithl#u
d Viet Nam cac trUdng van chili yeu qudn 1;^ sinh vign bSrig phuong phap diem danh bSng mi^ng m i t thdi gian ciJa g&t vien dong thdi van xay ra tinh trang hgc hg, thi h$. Mat khae, m g t 50 trudng quhn I)? sinh vien di hgc bSng cdch quet th4l£i RFID tuy nhien nd cung la each qukn i^ khdng hiSu quS v) sinh vien de cho nhau mUOn th§, vk t h i de bj hdng va bj mat. Trong khi do phuong phap quan ly bang nhan dang bSng v i n tay dang ngay cang phd bien vi tinh Uu vi^t cOa nd n h u : vhr\ tay moi ngudi la duy nhat dil la anh em smh ddi, kho lam gii van tay, thiet bj quet vkn tay d ^ sis dung.
Tuy nhien thiet bl phan ciJng hien nay d^u mua t(/Trung Qudc va Sli dung dau dgc quang hgc sau do lap trinh ph^n m^m quan ly, hoac mua phan mem quhn i^. Phan ciing vdi dau dpc van tay la quang hgc sau mot thdi gian sil dung se bflc Ifl nhlJu nhugc diem n h u man hinh cham van tay de md kh6 nh^n d^ng, de lam glk vkn tay va diem danh hg, tdc do xCr I;? cli|m lai . Oong thdi he thdng nay khi trien khai cac thi^t bj nfii vii nhau bang day mang phhi dye tUdng chi phf di day vh khi mang di xa. Khae phuc nhu'ng han che cCia dau doe v3n tay quang hoc bai bao de xuat gidi phap sis dong dau dge vhr\ tay dien dung vdi d6 chinh xac eao va kho lam gid,va khScphuch^
thdng diem danh truyen thdng eo day h^ thdng n^y sis dung eong n g h ^ Will khong phhi di ddy , khdng phy thudc vho khodng each. He thdng nay tan dyng du'oc eke Imh kien giii thknh re nhu chip ARIW gia thanh ri vh hieu suat cao. Nhd c6 chi phi thap va hieu qua cao trong viec q u i n 1;? va thdng kS bio cao, he thdng se de dang thUOng mai tren thj trUdng.
Z.Tong quan he thong 2.1. Module nhdn dgng vdn tay
Module nhan dang vkn tay trong hinh 1 sCr dung 3i quft ngon tay va sau d o t chuyen no thanh dnh va tiep do thdnh file chiia k;^ t u . Thdi gian chup dnh dau vao < 0.1 giay. Dung luWil CO the luu trO 1000 vdn tay. Dfl li^u dUflc lUu trir trong module' sau do dugc duge ehuyen tdi vi d i l u khifen dfe dgc va nhan dang;
so sanh vdi co sd dOf li^u.
(iinh 1. Module nhan dang van tay
Nguyfen \^ hoat d g n g
Nhan dang van tay g d m 2 phan. Dang ky lay mau vdn tay va Nhan dang van tay. Khi I3y mau vdn tay sinh vien phdi dat ngon tay hai lan trfen module. Module se xCS ly hinh dnh ngdn tay ian t h f l hai, sinh ra mdt mau van tay dUa trfen ket qud xiJT I'ji vk luU t r f l mau.
Khi nhan dang vdn tay, sinh vien dat ngon tay tren cam bien va module se sinh ra mdt mau ngon tay vdi mau xac dmh dugc thifet ke trong module, t i m kiem phCi hop 1:N, modul t i m kiem van tay phii hgp trong todn bo t h u vien vdn tay. Module se trd vfe kfet qua phCi hgp la thanh c6ng hay that bai.
Tai nguyen he t h d n g
Nhu cau cCia moi ngudi dCing la khae nhau, hfe thong module cung cap tai nguyen phong phii cho ngfldi sfl dung.
a. Notepad
He thdng tap h g p 512 byte (16 p a g e ' 32 byte) cho ngfldi dCing, noi dfl lieu yeu cau khi mat difen ngfldi dCing vdn Iflu t r f l dfloc. Ngfldi dung CO the truy xuat page bdl lenh PS_Wrlte Note pad va PS_Read Notepad.
b.Buffer
Cd bg dem hinh dnh va 2 file bo dem 512 byte ky t u vdi khoang trdng RAM cfla module. NgUdi dUng cd the dgc vd vifet tren bd dem bSng lenh.
c. Image buffer
Bg dfem hinh dnh phuc vu cho vifec Iflu trCf hinh anh va ^ n h dang dnh 256*288 pixels. Khi truyen thdng qua UART, tdc do nhanh, ehi l§n tdi 4 bit eho moi pixel dfloc truyen. Vd 2 pixel hen ke eflng hang se cd dinh dang byte trflde khi truyen. Khi tdi len PC, dnh 16 do xdm se m d rgng tdi dnh 255 miJc xdm. Od la d m h dang 8 bit BMP. Khi truyen qua USB, diem dnh vdi 8 bit, la mfle 256 mfle xam.
d.Character file buffer
Bg dfem file k;^ tfl, CharBufferl, CharBuffer2, dflde sfl dung de Iflu t r f l ed file ky tU va file mau.
2.1 Vi diiu khien Gldi thieu ehung ve ehip ARM
Ho vi dieu khien 8051, AVR, PIC rat phd bien. Ho ARM vdi dai bieu Id SMT32 cCia STMieroelectronic. ARM la ho vi dieu khien 32 bit ehay d dien dp 3,3V nfen rat phii h g p cho cac thiet bj cam tay hoae edc thifet bi ehay Pin vdi yfeu cdu tieu t d n it nang lugng,
Hlnh 2. Mo hlnh giao tiep vi dieu khiln ARM STM32
Cdc giao tifep tren vl difeu khien ARM dflOc tdi flu t f l khi thifet ke, luon c6 san cdc cdng eu ho t r d giao tifep cho ca phan cflng va phan mfem t f l hang, rat thudn Igi cho ngudi lap trinh tiep can va phdt trien flng dung.
2.2 IVIodule UARTtO Wifi Gioi thifeu module UART to Wifi
Modul UART to Wifi la mdt module nhu'ng djia trfen ehudn mang giao tifep senal, vdi giao thifc TCP/IP, bat cdng giao ti§p ngfldi dung, Ethernet, giao difen mang khong ddy gifla cac ben. Module UART to Wifi thifet bi serial truyen thdng khdng can thay ddi cau hinh, dfl ligu dfloc t r u y i n qua m^ng Internet, Cung cap giai phap nhanh eho thiet bi cdng serial dfe t r u y i n dir lifeu qua Ethernet.
Gidi thifeu Module UART t o Wifi ESP8266-01
Hmh 3. Module UART to Wih ESP826e
Module ESP8266 la module wifi gia re va dfldc danh gia r i t cao cho cac ling dung lien quan tdi Internet va Wifi cung nhU cac iing d i j n g t r u y i n nhdn sfl dung thay t h i cho cac module RF kha'c vdi khoang each truyen ISn tdi TOO met(m6i trfldng khdng co vat can). Tren 400 m vai anten va router thich hgp,
Tinh nang ciia chip ESP8266 H6 t r o ehudn 802.11 b/g/n.
Wi-fi 2.4GHz, ho trg WPA/WPA2 Chu§n difen ap ho3t d^ng • 3 3V
Chuan giao t i i p ndi t i i p UART vdi t^c dp Baud Ifen den 115200 Ho t r g eae chuan bao mat nhfl:
OPEI^i, WEP,WPA_PSK,WPA_WPA2_PSK.
Hd trg ea 2 giao tiep TCP va UDP
Lam vifec n h f l cac may chu cd the kfet ndi vdi 5 may eon.
LED ehi bao truyen nhdn TX/RX 3.T6ng quan cua he thdng
Hp thdng diem danh, quan ly sinh vien dam bao viee diem danh phai nhanh va chinh xac. Khi smh vifen cham van tay phai so sanh ngay vdi CO sd d f l lieu eua sinh vien da khai bao truoc va tra ve ket qua ngay lap tiic bang thdng bao qua loa, man hmh hi§n thi. Khi ngudi quan ly mudn thong kfe, bao eao d l dang va chinh xac s6 lUtjng smh vign di hoc.
He thdng gdm ed cac modul sau:
- Khoi cam bien van tay gdm IC dge van tay ngfldi d i i n g thanh ca'c anh va diing IC cam b i i n van tay dign dung FPC1020AM chuyfen thanh tin hieu s6 de t r u y i n tdi Vi d i i u khien xU ly.
- Khoi xfl 1^ trung tam: Difeu khien t^t ca cae khdi cdn lai. Cd nhiem vu difeu k h i i n , nhap dfl lieu vd truyen dfl lieu, x f l i y d f l i i e u .
- Khdi hifen thi va nut bam dung LCD 16x 2 dung de hien thj thdng sd can dat dflOc
- Khoi Loa: Thong bao kfet qua ngfldi dung diem danh thaiih eong hay khong
- Khdi ngudn: Dung dn a p x u n g LM 2576 dn difen dp t f l 5V-12 V d i cung cap dien cho tat cd ede khdi cdn laL Nguon chuyen mach cap dien ap cho toan mach 3.3 V va 5 V
- Khdi t r u y i n tin: UART to Wifi nhdn d f l lifeu t f l khdi cam b i i n van tay t r u y i n dU lieu ve trung tam la server k i t ndi voi Vi d i i u k h i i n dung modul wifi ESP8266 bdng tap lenh AT command
- Khdi Dao ddng: Giao tifep may tinh cdng COM may tJnh dfe ddt dia ehi IP xac dinh modul cam b i i n van tay, sii dung thach anh 32768KHz dfe dat ddng hd thdi gian thuc d i xac dinh thdi gian vao ra cua sinh vien.
- Mang Lan de k i t ndi cac module ddu vao di? lieu va server Iflu tri(
dir lieu dung de thdng bao va bao cao.
- Server dung de luu trir cac mau vdn tay khi lay m l u ldn ddu va la eO sd di} ligu de so sanh vdi di? lieu van tay khi sinh vien d i i m danh.
Dong thdi la ndi tap trung quan ly, truy xuat, xfl ly bao eao, thdng kfe.
4. KetquHdatdiTdc Ket qud dd dat dfloc n h f l sau:
+ Mgt he thdng difem danh hoan ehinh gdm phdn cung va phan mem + Difem danh dflgc sinh vien bang phUOng phap xac thfle vdn tay chinh xac, hifeu qua
04.2016 Bsunnnas 1139
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ph^m Thiet bl diem danh
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Ban vj t i n h
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H'inh 4. Sa d6 tong quan he thflng
S o d d modul nh^n dang vdn tay nhfl sau:
TAlLlEUTHAMKHiiO f - [l]KeiARM,|jVisionlDE0vefview,httpV/wwvir.keil.aim/uvision/,2010 ''"*%.
[2]KeilARM,Advantagesofflie|iVisionlDEfiirARM, ''•'"'^
[3] Keii ARM, Getting Started Cresting Applications with (iVision 4,2010. '^^^' [4] ARM, Processors, http://arni com/products/processors/indeK.php, 2010, ' - [5] Micheal Barr, Anthony Massa, Pmgramming Embedded Systems: with C and GNU Development tools, 2 " Edition, O'fieilly Media, Odoiter 1,2006 (2"' Edition).
E6) Jack Ganssle, Midieal Ban, Embedded Systan Dictioiuty, CMP Books, 2003.
[7| Tii lieu ARM-CortexMJ STM32F103x: http://www.st com/ "-'i^-.
Hinh 5. Soda modul nhan dang van tay
•i- Thdi gian ddng nhdp nhanh, kip thdi
I ' + H l i n thi thdng tin sinh vifen tren man hinh h i i n thi khi sinh vien
^dang nhdp thanh cdng
+ Khi sinh vifen ddng nhap khdng thanh cdng cd den led, va hifen t i l l trfen man hinh LCD mdi sinh vifen dang nhdp lai
+ Khi sinh vign dang nhap thanh cong cd bao coi, den led, va hifen thi trfen man hinh LCD thdng tin sinh vien va tich vao co sd dU lipu budi .hpe do ciia sinh vifen.
+ Co t h i theo doi tinh hinh di hge eua sinh vifen tai bat ky may tinh nao cd k i t ndi internet
+ Co the sao Iflu, thay ddi, va c^p nhdt sinh vifen, thdng kfe cae budi dl hpe cac budi nghi eiia sinh vifen bdng phdn m i m quan ly
Thiet bj phan cflng Giao dien phan mfem quan ly Hinh 6. Thiet bj phan cifng Hinh 7. Giao dien phin mem quan 1^
5. Hifdng t r i e n khai de t a i v d o thu'c t i e n
Sdn pham cd nhifeu flu die'm de dfla vao sfldung tai moi noi cd nhu cau nhUgiang dfldng de difem danh sinh vien di hoe, d thi. H^ thdng c6 cdc flu difem nhfl:
- Gon nhe, tien mang di - Tiet kiem nang lugng
- Chi phi thap cho sdn pham ch^t Iflong cao.
- Don gian, dfe sfl dung
Gid thflong mai cua sdn pham khi dfla ra thi trfldng
