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T NG HO TRM THU PH GIAO THNG NG B

AUTOMATION TOLL PLAZA FOR ROAD TRAFFIC

NGUYN KIM NH NGUYN CH THNG L TUN ANHTrng i hc Bch Khoa, i hc Nng

TM TT

Bi bo ny gii thiu v h thng gim st v iu khin t ng ha trm thu ph giao thngng b. Trong h thng ny s dng cng ngh RFID, S7-200 v Visual Basic. Vi hthng ny, s gii quyt bi ton thu ph giao thng mt cch hiu qu, hn ch c tiu ccv cho php gim c s nhn vin trc trm nh hin nay.

ABSTRACT

This article present about supervisory and automation control system toll plaza for roadtraffic. In this system, we used RFID technology, simatic S7-200 and Visual Basic. With this

system, we will solve problem change for traffic effect, cut down negativeness and allow toreduce agents watch officer as today.

1. t vn

Trong tt c cc lnh vc t kinh t, chnh tr, vn ho, x hi... T ng ho dndn khng nh c vai tr cc k quan trng v tt yu ca mnh. S pht trin ton dinca mt x hi lun song hnh vi s pht trin ca khoa hoc cng ngh.

Giao thng l mt vn quan trng ca x hi v vic gii quyt vn giao thng lmt cng vic m ton x hi phi quan tm. Hin nay ti cc trm thu ph giao thng ng

b s lng nhn vin trc cn kh nhiu, xe qua trm cn phi qua nhiu giai on x l nh

mua v, sot v nn lm mt nhiu thi gian, gim tc lu thng, gy n tc. Chnh v iuny s mang li hiu qu kinh t khng cao v khng vn minh.Xut pht t nhng yu cu ca thc tin nn vic nghin cu, thit k v ch to trm

thu ph t ng l rt cn thit v hu ch.

2. Gii thiu v cng ngh RFID

RFID (Radio Frequency Identification) l h thng nhn dng qua sng Radio cahng Siemens. RFID hot ng trn nguyn tc:

D liu c cha trong Chip nh (Tag/MDS), d liu ny c truyn thng viPC/PLC thng qua cc module bao gm: module reader v module ASM (Adapter Module).Trong module reader cho php trao

i vi chip nh thng qua vic thupht nh c antenna tch hp sn trongn hoc lin lc vi antenna ri quacp. Module ASM l module trunggian c chc nng nh mt b chuyni, cho php trao i thng tin giamodule reader v PC/PLC.

Chip nh RF330T, RF350T, RF360T: L mt chip thng minh cho php lu tr d liu vtrao i thng tin vi b c. Cc chip nh c sn xut vi nhng hnh dng khc nhau,c tnh k thut khc nhau ph hp vi yu cu thc t ca cc h thng t ng.

Module reader RF310R, RF340R, RF350R: Ngoi nhim v trao i thng tin vi chipnh, module reader cn cung cp ngun cho chip nh hot ng di dng sng radio.

Hnh 1. Nguyn l lm vic ca RFID

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Module reader cng c ch to vi nhiu chng loi khc nhau ph hp vi yu cucng ngh ca cc h thng t ng. Cc module reader c cc hnh dng nh sau:

1 - n trng thi2 - Cng kt ni vi mng Industrial Ethernet.3 - Cng kt ni RS4224 - Cng kt ni RS2325 - Digital I/O

6 - Ngun cung cp (24VDC)Module ASM:Cho php lin kt gia b c vi PC/PLC thng qua mng Profibushoc ng truyn RS232.

3. ng dng cng ngh RFID vo trm thu ph

Cng ngh RFID c a vo trm thu ph thc hin nhng cng vic sau: MiChip nh s cha mt m s mang thng tin v xe v ch xe ang lu thng. Khi xe i quatrm thu ph th u c c b tr xung quanh trm s c m s ny v truyn v PC/PLC,sau m s ny s c PC so snh vi m s c sn trong c s d liu ca my tnh.

Sau ton b thng tin v xe mang Chip nh tng ng s c Visual Basic c v

my tnh v hin th ln giao din HMI. Chng trnh lc ny s t ng i chiu cc thngtin v xe v kim tra ti khon ca ch xe. Nu cc thng tin l hp l v s tin trong tikhon cho chuyn i th chng trnh Visual Basic s t ng tr s tin qua trm ca xetng ng v ng thi s a tn hiu iu khin xung PLC iu khin m Barier cho

php xe qua trm ngoi ra chng trnh cng gi s ti khon cn li n PLC hin th choch xe bit ng thi xut ha n in cc thng tin cn thit. Ngc li s tin trong ti khonkhng cho chuyn i hoc cc thng tin v xe khng hp l th chng trnh s thng bocho ch xe bit thng qua bng thng bo v xe khng c php qua trm. Lc nyBarier cng ph s c m xe vo bi bn cnh.

Nh vy xe qua trm s b qua c giai onmua v sot v ng thi thi gian trao i d liugia Chip nh v PC c din ra trong thi gianrt ngn do s gim thi gian lu thng ca xe khiqua trm.

4. Visual basic vi truyn thng ni tip

C rt nhiu phn mm lp trnh h tr cho cc ng dng truyn thng ni tip. VisualBasic l mt trong hng phn mm kh ph bin v d s dng trong lnh vc ny.

Trong Visual Basic thit lp ch iu khin truyn thng ni tip MSComm bngcch chn Project - Component (Ctrl T) - Microsoft Comm Control 6.0, biu tng hnh in

Hnh 2. Cu to ca modul reader

Hnh 4. Module ASM

Hnh 3. S kt ni thit bngoi vi vi modul reader

Hnh 5. S b tr antenna hai u trm

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thoi tng trng cho MSComm hin ln, khi cn s dng ko biu tng ny vo trongForm chng trnh.C 2 cch trao i thng tin:* iu khin s kin: Cch ny s dng thuc tnh c h tr sn OnComm by cc skin .

* Hi vng: xc nh s kin mi hoc li bng cc ny ta kim tra cc c tnhComEvent sau mi chu k chng trnh. Cch ny khng ti u v my tnh cn c thi gian thc hin hi vng v thng c s dng trong cc ng dng n gin. C 2 cch cit thng s cho cng truyn thng:+ Ci t trong chng trnh ng dng.+ Ci t trong Control Pannel: chn Control Pannel/System/Device Manager/Port (Com Bv LPT) Resourses.

5. Thut ton truyn thng gia my tnh v PLC

6. Tnh chn thit b cho mt trm cp trngTi mi trm thu ph nh hin nay, ngoi nhng thit b v c s h tng c sn th khi

T ng ho mt trm nh hin nay cn c thm nhng thit b nh sau:- Hai my vi tnh kt ni mng LAN trong mt my c nhim v l x l thng tin v mtxe no khi qua trm, my vi tnh c kt ni vi PLC, my in. My cn li c ktni vi Camera c nhim v quan st trm. V mng cc b ny c ni vi Internet.

- Hai Camera ny c nhim v quan st hai hng ca 2 ln ng ngc chiu nhau.

- Bn module reader, hai module ASM b tr hai u trm.- Ba my in trong : mt my trong trm c nhim v l in nht k ca xe qua trm khi cyu cu ca ch xe, hai my cn li c t hai ln ng c nhim v l bin lai cho chxe khi xe i qua trm.

Ket

thuc

Chay chng trnhmo phong

ung

PC nhan dlieu ComEvReceive

oc d lieu t bo emnhan va x ly d lieu

o

em d lieu vao boem nhan MSComm.Input =

myInput

Kiem tra viecnhan d

lieu

BEGIN

PC ch d lieut PLC

Kiem tra lai chngtrnh va thong bao

loi

Sai

Hnh 7. PC nhn d liu t PLC

BEGIN

Ma hoa cacnut lenh truyen

d lieu

Kiem traviec truyen

d lieu

Kiem tra lai chngtrnh va thong

bao loi

Sai

ung

Truyen d lieu enPLC ComEvSend

PLC nhan tn hieu xly va ieu khien tram

thu ph

Ket thuc

Hnh 6. PC truyn d liu n PLC

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- PLC S7-200 CPU 226 v cc ph kin km theo nh cp kt ni b chuyn i PC/PPI.

- Mt my pht in d phng.

- Hai b Kit c kt ni my tnh hin th cc dng thng bo, cnh bo v s tin cn licho ch xe bit.

- Su ng c trong : 4 ng c lm nhim ko ca a cc xe vi phm hoc ht tinvo bi u xe vi phm, 2 ng c cn li dng cho Barier 2 u ln xe mt v c gii khi c xe vi phm c a vo bi u xe vi phm thi ng Barier ny li.

7. Thit k phn mm

HMI qun l: cho php nhn vin trc trm d dng gim st c cc thng tin v xe nv ch xe. ng thi c th m Barier qua nt nhn "Barier" trn giao din cho php xe

cha ng k dch v qua trm.HMI ng k: cho php nhn vin trc trm cp nht thm thnh vin mi vo dch v. Nunh c m s no ng k th s c mt Message Box hin ln thng bo cho nhn vintrc trm bit tn ti m s ny.

Hnh 8. S mt bng b tr thit b ti trm c 2 ln xe

Barie

Barie

Phng gimst v iu

khin

Camera

Camera

Printer

Printer

Hng xevo trm

Hng xevo trm

Lnngdnhchoxe

mt vc gii

Lnngdnhchoxe

mt vc gii

Barie

Barie

A

A

A B

BB

Bi xe vi

phm

Bi xe vi

phm

Cavo

ca xe

viphm

A

B

BA

Cavo ca

xe viphm

nh 9. HMI qun l Hnh 10. HMI ng k Hnh 12. Bin lai xe qua trmHnh 11. HMI hy

ng k

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HMI cp nht ti khon: Cho php ch xe np thm tin vo ti khon ca mnh. nptin vo ti khon nhn vin trc trm nhn vo nt "CP NHT", mt Message Box hinln thng bo yu cu nhp m s, sau chng trnh s t ng cp nht vo ti khon stin m ch xe np.HMI hu ng k: cho php nhn vin trc trm hu ng k dch v ca 1 xe no theoyu cu ca ch xe trong trng hp mt xe hoc bn xe. Ngoi ra HMI qun l cn cho

php nhn vin trc trm c th tm kim thng tin 1 xe no khi c yu cu.

HMI nht k xe qua trm: cho php nhn vin trc trm c th cho bit s ln mt xe no qua trm, thi gian np ln tin gn nht, ti khon cn li khi c yu cu ca ch xe no.HMI x l xe vi phm v xe ht ti khon: HMI ny ch xut hin khi nhn vin chn ch vn hnh h thng bng tay. Nh vy khi c xe vi phm hoc l xe ht ti khon i votrm th HMI ny s t ng xut hin ch lnh ca nhn vin vn hnh trm. Sau khi nhnvin trc trm nhn vo nt M, lc 2 ca pha tng ng c xe vi phm hay ht tonkhon s m ra xe i vo bi xe vi phm. ng thi lc ny Barier ln ng dnhcho xe mt v xe c gii cng pha s t ng ng li. Sau khi xe vi phm c a vo

bi xe th lc Barier ln ng dnh cho xe mt v xe c gii s t ng m ra cho vic lu thng c tip tc.

8. Kt lun

Trm thu ph giao thng ng b s dng cng ngh RFID, b iu khin Logic khlp trnh PLC, giao din HMI thn thin s dng phn mm lp trnh hng i tng VisualBasic cho php d dng lp t v vn hnh ti cc trm thu ph hin nay.

Chng ti gii quyt c bn bi ton ny mong rng n s mang li nhng hiu qukinh t thit thc i vi s nghip Cng nghip ha Hin i ha ca t nc.

TI LIU THAM KHO

[1] Serial port complete - Jan Axelson[2] Mng truyn thng cng nghip - Hong Minh Sn[3] Kt ni my tnh trong Windows - Ng Din Tp[4] o lng v iu khin bng my tnh - Ng Din Tp[5] Lp trnh hng i tng Visual Basic 6.0[6] Lm Tng c, Nguyn Kim nh Gio trnh iu khin Logic Trng i Hc

Bch Khoa Nng[7] T ng ho vi Simatic S7-200 - Nguyn Don Phc, Phan Xun Minh.[8] T ng ho vi Simatic S7-300 - Nguyn Don Phc, Phan Xun Minh.[9] Simatic S7-300 - iu khin h thng (SystemHandling) - Trung tm Vit c.[10] T ng ho vi SIMATIC Siemens - Hans Berger.

[11] Tp ch t ng ho ngy nay.

Hnh 14. HMI nhat k xe quatram

nh 13. HMI cp nhtkhon

Hnh 15. HMI x l xe vi phm vht ti khon