He thOng quan sit luu luqng cua Nadeem nhim moc dich to diet' kien thuen lqi cho plain ph& hqp tic giim sit giao th6ng cda doon dusimg cao t6c phis tram cOrt chit c xe. Moc lieu niy tuong to nhu cM SOTIS, nhung hi thOng quan sit hru Itrong c6 mOt cich tiip lchic dOi v6i cic loci thong tin c6 sin qua mpg. Quan sit luu luqng
dlra tren du lieu vi vi tri hien toi vi t6c dO mkt tfrng phuong den eh* Idiong phii la ten vOn tic trong binh tren doon throng nhu trong SOTIS. Vi s6 luqng de lieu nhanh chong vtiqt qui glen hon, mOt co chi thich nghi gip hqp duqc s6r ding. Toi dirt phuong m8i chic xe c&t gitt dash sich ID ctia xe, vi tri vi tic de. Ch'ing duqc troy& den cic xe lAn c#n thong qua cic cinh bio. Kich thu6c ctia cinh bio duqc gioi hen, vi do d6 cot chi duqc gioi thieu di &gm s6 luqng de lieu nhung ding thOi phii truyin dot gin dimg thong tin vi phuang tier. 136i vii moc dich niy, cic nett ctla he thOng quan sit luu luqng stY ding hg so t6ng hqp trong viec twin tai. H6 so tong hqp ales ti khong phii la mOt phucmg lien duy nhit, ma li nhem cic loci xe voi tinh chit tuong to.
NW hi so tong hqp trong quan sit luu luqng bao elm tic dO duy nhit, vi trl, vi gia tri nhan thoi gian, cung voi mOt dash rich cic ID ctla xe. Dieu nay se flit Idem bing th8ng cho truyin cic gii tri rung biet cho m8i chiic xe rieng le. Cic gii tri tic dO vi vi tri trong ghi chip tong hqp la tong s6 tnmg blnh tren cic tham s6 tuong img cua m8i loci xe trong h6 so. met bleu di tong hqp duqc thi hien trong birth 2 4 He thong quan sit luu luqng de xuAt cic toin tong hop la tham s6 cho cic khu voc cite (loon dulmg phis truck. Cic thong s6 diu vii quan tong nhit la ty le t#p hqp, cho thiy c6 bao nhieu xe non duqc kit hqp thinh mOt tin hop, vi so luong dit lieu ce thi duqc truyin cho mOt khu voc nhAt dinh. Doa tren cic th8ng s6 cba he thing quan sit hru luqng sau d6 hqp cic gii tri thich hop, nhim gift cho cic 18i la nhe nhit.
Di in CASCADE cda Ibrahim Vil Weigle cho th&y mOt s6 diem tuong ding voi cich dip gin he lilting t6ng hqp quan sat hru luqng. N6 cling phi') phOi thOng tin vi vi
tri vi vOn tic cM xe voi nap tieu h8 trq nAng dOng 10 With ki hooch bIng he thOng dinh vi tren mong. CASCADE siY dung c6 phip nen c‘un cic loci xe c6 vi tri vi van
°NU2. i ruyen tnong Un trong.mang v anet
t6c tuong ttr nhau. Cic nhem phuong tien duqc tem tat trong mOt bin ghi, not s6
ltrqng de lieu cho mgi chi& xe trong cic ban ghi duqc t6i that' hoi.
Trung binh Traffic view VI tri bung binh: 9.96 T6c 60 trung binh: 47.5 Thoi glen nh6 Mat 12 ID xe: 1, 2, 3, 4
•
ID 1 ID 2
Vi tri 17 VI tai 14 T6c CIO 47 T6c CIO 52 Merl glen 12 Therl gian 16
ID 3 Vi trl 8 Vi trl 8 T6c 69 48 Theri glen 15 ID 4 Vi trl 4 T6c dO 43 Then ciao 16 40' dilio
Hinh 2.4 He thing quan sat luu luvng
Trong CASCADE xe ce th8ng tin chi tilt Ye teng xe trong khu Arc d6, goi la "bin ghi chinh". stir hieu biet chi tilt cfia mOt chi& xe duqc AA lh " tim nhin cic Cic pinning tien th8ng tin c6 sen duqc nhom lai thin& cic cum nly thuOc vao khoing catch chiec xe , nhom va dO cao ciut xe. Cic cHt ligu lien mOt chi& xe trong cic cum hO so sau d6 duqc nen bing catch the hien toa dO xe vat tOc dO twang d6i so yeti cic cum thing tim vi van the trong binh. Sau d6 mOt bin ghi cum tong hqp c6 chira vi tai cum (tuyet d6i) vi the dO,va mOt bin ghi ngin gon (co tQa dO Mang doi
so Yeti cum) cho m8i chi& xe trong cum nhu the hien trong hlnh 2 5 T6ng hqp thong tin duqc phin ph6i tren mOt khoing catch deli ham. 'Chi nhin duqc bin ghi tong hqp, ho
hqp nhit lai de c6 "cii nhin may rang" ye phin hOi cis xe.
SOTIS, he thOng quan sit kin luqng vi CASCADE du c6 mOt s6 diem Wong dOng. Ca ba dew thu thip th8ng tin ye vi tri vi the dO cis xe, vi ket hqp thong tin ye pinning tien vbi cic gii tai tham s6 twang qr. Khong cii nio trong s6 cic 110 thong nay h8 trq kit hqp phin cep cic th8ng tin tren tan bO mpg luai &rang b0, tirc la, thong tin tren nheng con &king khic biet lA khong bao gib ket hqp. VI viy, Oheng trueng hop trio nom gitta tong hqp vi tip hqp. 6 day, guy& dinh phin loai cic co chi SOTIS
de gum de lieu nhu li tong hqp, vi he thong quan sit bin luqng vi CASCADE nhu li
kit hqp, vi SOTIS xem xet de lieu xe lam milu cis tham s6 cOng mOt vin tOc tree mOt doan dubng vi saw d6 tem tit cic min nay. He th6ng quan sit luu luqng vi CASCADE, nguqc lai, coi xe rieng biet do Q6 d6i xti nhu nhung thuc the quan sit khic biet.
LA-1U ONLY L. i ruyen uiong tin trong mang v anet
NhOm cic ban ghi CASCADE VI VI bung tint- 10,75
T6c el) trung blnh: 47.5
Bin ghi cep nhet ID 1, vi tri chanh lech +6,25, vin the chenh lech -0,5 Ban ghi cep nhet ID 2, vi trl chanh Itch +3,25, 4n the chenh *di + 4,5 Ban ghi cep nhat ID 3, vi trI chanh lech -2,75, van the chenh Itch +0,5 Ban ghi cep 'that ID 4, vj trt chart Itch -6,75, van bk_chanh tech -4,5