Saturday, March 30, 2019

Design of Traffic Light System

Design of Traffic Light SystemContents assess 1Design SpecificationDesign 1 work out cram draw of the traffic lightness up scheme milling machinerymit diagram tabulateCircuit simulation development Multisim software,Task 2Timing snack counterTask 3 bet 13 (Main wild ink and amber step in amber)Task 4Remake designLIST IN anovulatory druge accede 1(State diagramme) bow 2(D type Flip Flop)Table 3(design cost)Table 4(compare control panel)List in FigureFigure 1 traffic lights systemFigure 2(block diagrammed)Figure 3(Moore model)Figure 4 (main blushing(a) and fighter leafy vegetable for 10s)Figure 5 (Main amber and sub red and amber for 2s)Figure 6(main red and sub putting surface for 10s)Figure 7 (asynchronous counter for time counter)Figure 8(The Design is 30s counter for main route in Asynchronous counter)Figure 9 (The Design is 20s counter for aspect path in Asynchronous counter)Figure 10 Main spurt and sub redFigure 11 (Main amber and sub red and amber)Figure 12 (Main red and sub green)Figure 13 (Main red and amber sub amber)Figure 14(remake design)Design SpecificationDesign specification prepared for a single main and sub - path junction in rural bailiwick is given belowThe green light for the main road pull up stakes be stay ON for 30s.The green light for the side road will be stay ON for 20s.The amber caution light will say ON for 5s between changes from green to red.Main road and side road timing countdown should display in a 7segment display. epoch change of the traffic lights show in the Appendix I.The traffic light system for a single main road and sub road junction in a rural area.Complete Block Diagram of the traffic light systemFigure 2(block diagrammed)The FSM description stands for Finite raise machines. the Finite state machines are the most common controllers of machines. Its In the model Traffic light, the intersection of a main road with a side road is controlled by two traffic lights. FSM has three inputs (T1, T2 and T3) AND six outputs (Rm, Am, Gm, Rs, As and Gs)In hereRm is Red light for main roadAm is Amber caution light for main roadGm is ballpark light for main roadRs is Red light for sub roadAs is Amber caution light for sub roadGs is green light for sub roadT1 time is 30secondsT2 time is 20secondsT3 time is 5secondsComplete Moore model state diagram for traffic light systemState diagram TableP.StateN.StateINPUTOutputsGmAmRmGsAsRs100001T1010011T3001100T2011010T3Table 1(State diagramme)State Assignment in colourize codeHere using gray code for statesState transection tableHere using D type flip flops for design a circuitP.SQ1 Q0N.SQ1+ Q0+INPUTGmAmRmGsAsRs0 00 0001000010 1T1010 10 1010100111 1T3111 11 1110011001 0T2101 01 0100110100 0T300Table 2(D type Flip Flop)Simplified equations for the system.From Laws of Boolean Algebra(The equations are,Circuit simulation using Multisim software,Figure 4 (main red and sub green for 10s)Figure 5 (Main amber and sub red and amber for 2s)Figure 6(main red and sub green for 10s)Timing CounterFigure 10 Main green and sub redFigure 11 (Main amber and sub red and amber)Figure 12 (Main red and sub green)Figure 13 (Main red and amber sub amber)Task 4 concomitant name criterionPrice (Rs)2 gloaming AND adit IC5 cxx-5=6003 pin AND gate IC2120-2=2402 pin OR gate IC140-4=403 pin OR gate IC140-1=402 pin XOR gate IC140-1=40 multiple JK FF IC10100-10=1000Dual D FF IC1100-1=100DCD 7 share decoder IC5100-5=5007 part display550-5=250NOT gate IC240-2=80Red color LED25-2=10Amber color LED25-2=10Green color LED25-2=10wires20m15-20=300Power adaptor2150-2=300 numerate3420Table 3(design cost)Remake designFigure 14(remake design)Compare the costItem namePrevious cost (Rs)New cost(Rs)2 pin AND gate IC1-120 = 1201-120 = 1203 pin AND gate IC1-120 = 1200XOR gate IC1- 40 = 400D type FF IC1-100 = 1001-100 = 100Decoder IC01-100 = 100NOT gate IC1- 40 = 402- 40 = 40OR gate Ic1- 40 = 401- 40 = 40 number460400Table 4(compare table)In new design cost is sligh t than old designReferenceMano M.M,Michael D.C. (2008).Digital Design.New DelhiPHI.Floyd,L.(2011).Digital Fundamentals.10th ed.IndiaPearson. p271- 287.http//www.topssrilanka.com/article24948-new-traffic-ligth-system-atbambalapitiya.html.Lasrhttp//www.sundayobserver.lk/2012/06/03/imp01.asp

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