Preview

traffic light controller

Satisfactory Essays
Open Document
Open Document
381 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
traffic light controller
AIM The main aim of this project is to design a Traffic light controller using 8085 microprocessor. The 8085 Microprocessor is a popular Microprocessor used in Industries for various applications. Such as traffic light control, temperature control, stepper motor control, etc. In this project, the traffic lights are interfaced to Microprocessor system through buffer and ports of programmable peripheral Interface 8255. So the traffic lights can be automatically switched ON/OFF in desired sequence. The Interface board has been designed to work with parallel port of Microprocessor system. The hardware of the system consists of two parts. The first part is Microprocessor based system with 8085. Microprocessor as CPU and the peripheral devices like EPROM, RAM, Keyboard Display Controller 8279, Programmable as Peripheral Interface 8255, 26 pin parallel port connector, 21 keys Hexa key pad and six number of seven segment LEDs. The second part is the traffic light controller interface board, which consist of 36 LEDs in which 20 LEDs are used for vehicle traffic and they are connected to 20 port lines of 8255 through Buffer. Remaining LEDs are used for pedestrian traffic. The traffic light interface board is connected to Main board using 26 core flat cables to 26-pin Port connector. The LEDs can be switched ON/OFF in the specified sequence by the Microprocessor. The block diagram of the system is shown in fig.1. The lay out of the traffic light is shown in fig 2. FIG.2 LAYOUT OF TRAFFIC LIGHTS 8085 CPU Latch 8255 PPI 26 pin port connector 26 pin port connector Buffer AD0-AD7 A0-A7 26 pin FRC cable D0-D7 System Bus EPROM RAM 8279 keyboard Display Controller Anode driver Stop PE Decoder Keyboard Cathode driver Traffic light interface board Fig 1 Block diagram of Traffic Light Controller Stop PW Stop PN Stop PN Stop PW Stop PE Display Go PW Stop PS Go PS Stop PS Go PS Go PE Go PW Go PN Go PN Go PE NORTH SOUTH EAST WEST Stop W Warning W Go W FR W FL W ST W Stop N
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    The Only Traffic Signal On The Reservation Summary
    • 241 Words
    • 1 Page

    The Only Traffic Signal On The Reservation Summary

    A theme that is central to the story “The Only Traffic Signal on the Reservation,” by Sherman Alexie is to keep on pursuing your dreams and do not let anybody or anything get in your direction. “I was sober but wished I was drunk,” thought Victor as he held a pistol to his temple. Victor being sober would prevent him from pulling the trigger. He let being sober get in the way of shooting the pistol. “I think Julius is going to get bad," implies Adrian.…

    • 241 Words
    • 1 Page
    Good Essays
    Read More
  • Powerful Essays

    Fat Tax vs Traffic Light System
    • 4806 Words
    • 20 Pages

    Fat Tax vs Traffic Light System

    1) Negative externalities - . Negative externalities are the negative impacts on the third party. The social cost Private cost + External Cost and Social Benefit = Private benefit + External benefit. If externalities do not exist the social and private costs and social and private benefits are the same. Externalities create a divergence between private and social costs of production and private and social benefits of consumption.…

    • 4806 Words
    • 20 Pages
    Powerful Essays
    Read More
  • Best Essays

    Traffic Simulation
    • 1468 Words
    • 6 Pages

    Traffic Simulation

    A toll bridge spans the Black Warrior River connecting Interstate 20/59 to Northport, Alabama. The bridge is privately owned by Tuscaloosa By-Pass and its website is http://www.tuscaloosabypass.com/Default.aspx. The bridge was installed as a means of streamlining and expediting traffic to Northport and reducing truck traffic from the…

    • 1468 Words
    • 6 Pages
    Best Essays
    Read More
  • Satisfactory Essays

    Why Are Stoplight Decisions Important
    • 268 Words
    • 2 Pages

    Why Are Stoplight Decisions Important

    Stoplight Decisions are where someone goes to stop at a stoplight and there is where they make their decision, go right, left, or straight. You can go straight on green and at some turns you can turn right on red. Stoplight decisions are important because if you don’t pay attention you will be breaking the law, or seriously hurt or kill you or someone else. People that don’t pay attention will end up executing an illegal U-turn, run a red light, turn left on red, and much more. Everyone on the roads should take a test every couple of years that will make sure they know what they are doing. It’s unsafe out there and people need to make good stoplight decisions because it’s important that people do the right thing and not do anything…

    • 268 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Powerful Essays

    ‘Scrambled’ Pedestrian Crossings at Signal Controlled Junctions - a Case Study
    • 5834 Words
    • 24 Pages

    ‘Scrambled’ Pedestrian Crossings at Signal Controlled Junctions - a Case Study

    ‘Scramble crossings’ for pedestrians at signal junctions are widely used in Japan and have been reintroduced in Canada and the United States as a way of prioritising pedestrian movement by stopping all traffic movement and allowing pedestrians to cross in every direction at the same time. Some examples exist in the UK but their use is not widespread. One potential reason for this is there is limited guidance on when ‘scramble crossings’ should be considered as potential schemes for promoting pedestrian priority. This paper focuses on the proposed scramble or diagonal crossing scheme at Oxford Circus in central London. This has been designed by Atkins on behalf of The Crown Estate, Transport for London (TfL), Westminster City Council (WCC) and the New West End Company (NWEC) and was implemented during 2009. The purpose of the paper is to identify some of the existing examples in the UK and overseas and review the existing guidance on their application of scrambled crossings. The paper then describes the design process and key features of the Oxford Circus scheme and based on this experience concludes by suggesting potential future applications of scramble crossings in the UK.…

    • 5834 Words
    • 24 Pages
    Powerful Essays
    Read More
  • Satisfactory Essays

    Red Light Running Research Paper
    • 355 Words
    • 2 Pages

    Red Light Running Research Paper

    Red light runners cause hundreds of deaths and tens of thousands of injuries each year. In 2009, 676 people were killed and an estimated 130,000 were injured in crashes that involved red light running. About half of the deaths in red light running crashes are pedestrians, bicyclists, and occupants in other vehicles who are hit by the red light runners.…

    • 355 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Satisfactory Essays

    The Only Traffic Signal On The Reservation Doesn T Flash Red Please Analysis
    • 332 Words
    • 2 Pages

    The Only Traffic Signal On The Reservation Doesn T Flash Red Please Analysis

    In “The Only Traffic Signal on the Reservation Doesn’t Flash Red Anymore” by Sherman Alexie the theme for the story would be, there is always hope even if there exists a cycle of failure as portrayed on the reservation in the passage. In the passage, Victor tells Adrian that he thought “Julius might be the one” but in the end, Julius got drunk and lost the game. For a long time, Julius symbolized hope on the reservation to make it all the way but it was alcohol that made him lose the game, so this itself reinforced that there was hope for a slight moment on the reservation for Julius to succeed to becoming a great baller off the reservation. As Victor and Adrian were talking they noticed the Lucy girl and described her as “so good” and that…

    • 332 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Powerful Essays

    Digital Counter for Car Parking System
    • 3471 Words
    • 14 Pages

    Digital Counter for Car Parking System

    The objective of this assignment is to design and construct a car park digital controller circuit for 99 car parking slots using sequential and combinational logic circuits. The circuits will receive the digital signals from two sensors located at the ENTRANCE and EXIT of the car park to display the number of empty slots and to display the word FULL in case of no more empty slots.…

    • 3471 Words
    • 14 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Traffic Signal Design Guidelines
    • 10021 Words
    • 41 Pages

    Traffic Signal Design Guidelines

    TRAFFIC SIGNAL DESIGN GUIDELINES Revision: 2.0 September 2010 Document Revision History DATE | REV. | SPCR(s) | SECTIONS | DESCRIPTION | 11/2000 | Rev. 1 | | | Initial release of document | 05/2003 | Rev. 1.1 | | | Draft of first major update | 11/2003 | Rev. 1.2 | | | Final of first major update | 7/2010 | Rev. 2.0 | | | Major update | GEORGIA DEPARTMENT OF TRANSPORTATION TRAFFIC SIGNAL DESIGN GUIDELINES TABLE OF CONTENTS Section 1 1 INTRODUCTION 1 1.1 Applicable Standards and Specifications 1 Section 2 1 GENERAL INFORMATION 1 2.1 General Signal Plan Presentation 1 2.2 List of Materials/Pay Items 2 2.3 Miscellaneous Elements and Special Situations 2 Section 3 1 DESIGN STANDARDS 1 3.1 Traffic Signal (Concurrent) Phasing 1 3.1.1 Left-Turn Phasing 2 3.1.2 Split Phasing 2 3.1.3 Preemption 3 3.1.3.1 Railroad Preemption 3 3.1.3.2 Blank-Out Signs 4 3.1.3.3 Emergency Vehicle Preemption 6 3.2 Vehicular Signals 6 3.2.1 Display 7 3.2.2…

    • 10021 Words
    • 41 Pages
    Powerful Essays
    Read More
  • Good Essays

    Technical Specs
    • 590 Words
    • 3 Pages

    Technical Specs

    Illumination Control System with SMS Technology will be conducted to determine the factors to be considered in automating our lights using the technology of SMS. Explains the process of the devices using the technology of SMS, illumination circuit and the LED light in which is more useful in saving energy and at the same time, environmental friendly.…

    • 590 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Intelligent Systems, Robotics, Bioinformatics
    • 49526 Words
    • 199 Pages

    Intelligent Systems, Robotics, Bioinformatics

    Vladislav Bidikov Faculty of Computer Science and Engineering Skopje, Macedonia Nevena Ackovska Faculty of Computer Science and Engineering Skopje, Macedonia…

    • 49526 Words
    • 199 Pages
    Good Essays
    Read More
  • Better Essays

    Automatic Railway Gate Control
    • 4756 Words
    • 20 Pages

    Automatic Railway Gate Control

    There are many railway crossings which are unmanned due to lack of manpower, needed to fulfill the demands. Hence, many accidents occur at such crossings, since there is no one to take care of the functioning of the railway gate when a train approaches the crossing.The objective of this paper is to manage the control system of railway gate using the microcontroller. The proposed model has been designed using 8052 microcontroller to avoid railway accidents occurring at unattended railway gates, if implemented detection of train approaching the gate can be sensed by means of two sensors placed on either side of the gate. This work utilizes two powerful magnetic sensors; one of these magnetic sensors is fixed at upside (from where the train comes) and similarly the other magnetic sensor is fixed at down side of the train direction. Sensors are fixed on both sides of the gate. We call the sensor along the train direction as ‘foreside sensor’ and the other as ‘after side sensor’. When foreside sensor gets activated, the sensed signal is sent to the microcontroller and the gate motor is turned on in one direction by relay driver and the gate is closed and stays closed until the train crosses the gate and reaches after side sensors. When after side sensor gets activated and the signal about the departure is sent to the microcontroller, motor turns in opposite direction and gate opens and motor stops. type of system with the help of various electrical, electronic and mechanical components.…

    • 4756 Words
    • 20 Pages
    Better Essays
    Read More
  • Powerful Essays

    Microcontroller Lab Manual
    • 5274 Words
    • 22 Pages

    Microcontroller Lab Manual

    Exp No. 1- Familiarity and use of 8051 Micro controller Trainer. Exp No. 2- Instruction set for simple programs for data transfer, & 3 manipulation, arithmetic operations, branching operations, logical operations and testing condition of bit in a byte. Exp No. 4- Code conversion programs. Exp No. 5- Timer and counter programming using 8051 Exp No. 6- Serial mode operation of 8051 Exp No. 7- Interfacing DAC module using 8051 Exp No. 8- Interfacing Traffic signal control using 8051 Exp No. 9- Interfacing 7-segment display using 8051 Exp No.10-Interfacing Stepper motor control using 8051 Exp No.11-Familiarity with MCBX51 board and writing programs for MCBX51. Program for Blinking of LEDs. Exp No.12-Real time clock using 8051.…

    • 5274 Words
    • 22 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Mpmc on 8086
    • 2455 Words
    • 10 Pages

    Mpmc on 8086

    References: – Advanced Microprocessors & Peripherals – A K Ray, K M Bhuruchandi, 2nd Edition, McGraw Hill, 2010. – Microprocessors and Interfacing, Programming and Hardware – Douglas V Hall, 2nd Edition, McGraw Hill. 2005. – Introduction to 8086 microprocessor, (PPT) - Dr.P.Yogesh, Senior Lecturer, DCSE, CEG Campus, Anna University, Chennai-25. – Computer Architecture and organization, From 8085 to Core2Duo and beyond – Subrata Ghoshal, Pearson, 2011.…

    • 2455 Words
    • 10 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Traffic Detection
    • 1311 Words
    • 6 Pages

    Traffic Detection

    This paper primarily aims at the new technique of video image processing used to solve problems associated with the real-time road traffic control systems. There is a growing demand for road traffic data of all kinds. Increasing congestion problems and problems associated with existing detectors spawned an interest in such new vehicle detection technologies. But the systems have difficulties with congestion, shadows and lighting transitions.…

    • 1311 Words
    • 6 Pages
    Powerful Essays
    Read More

Related Topics