Design of Traffic Light System

Design of Traffic Light SystemContents tax 1Design SpecificationDesign 1Complete fend off Diagram of the traffic infirm systemnation diagram dodgeCircuit simulation using Multisim software,Task 2Timing CounterTask 3 mannequin 13 (Main red and yellow-brown sub yellow-brown)Task 4Remake designLIST IN Tabe tabularize 1(State diagramme)Table 2(D type Flip Flop)Table 3(design cost)Table 4(compare table)List in go for human body 1 traffic lights systemFigure 2(block diagrammed)Figure 3(Moore model)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)Figure 7 (Asynchronous counter for timing counter)Figure 8(The Design is 30s counter for main road in Asynchronous counter)Figure 9 (The Design is 20s counter for emplacement road in Asynchronous counter)Figure 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)Figure 14 (remake design)Design SpecificationDesign specification prepared for a single main and sub -road junction in countrified area is given belowThe green light for the main road will be stay ON for 30s.The green light for the side road will be stay ON for 20s.The amber caution light will assert ON for 5s between changes from green to red.Main road and side road timing countdown should display in a 7segment display.Sequence change of the traffic lights army 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 state machines. the Finite state machines are the most normal controllers of machines. Its In the example 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 sextuplet outputs (Rm, Am, Gm, Rs, As and Gs)In hereRm is Red light f or main roadAm is Amber caution light for main roadGm is light-green 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 Gray codeHere using gray code for statesState transection tableHere using D type sassy 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) modify 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 redFi gure 11 (Main amber and sub red and amber)Figure 12 (Main red and sub green)Figure 13 (Main red and amber sub amber)Task 4Item strikequantityPrice (Rs)2 flagstone AND gate IC5120-5=6003 pin AND gate IC2120-2=2402 pin OR gate IC140-4=403 pin OR gate IC140-1=402 pin XOR gate IC140-1=40Dual JK FF IC10100-10=1000Dual D FF IC1100-1=100DCD 7 Segment decoder IC5100-5=5007 Segment display550-5=250NOT gate IC240-2=80Red color guide25-2=10Amber color LED25-2=10Green color LED25-2=10wires20m15-20=300Power adaptor2 one hundred fifty-2=300Total3420Table 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 = 40total460400Table 4(compare table)In new design cost is less than old design computer addressMano M.M,Michael D.C. (2008).Digital Desig n.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