Seminar Topics & Project Ideas On Computer Science Electronics Electrical Mechanical Engineering Civil MBA Medicine Nursing Science Physics Mathematics Chemistry ppt pdf doc presentation downloads and Abstract

Presented by:
V.VAMSI KRISHNA
B.RAJASHEKAR
P.UMA MAHESHWAR
V.SAMPATH KUMAR

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ABSTRACT
Every one is very familiar to traffic lights.
 The main purpose of traffic lights is to control the float of vehicles (traffic).
 The basic principle of working of present traffic lights is timer.
 The specialty in our system is traffic is controlled by analyzing the density of vehicles floating.
 The whole system is developed by implementing embedded systems.
 This can be mainly implemented in metropolitan cities.
BLOCK DIAGRAM
HARDWARE REQUIRED
 Power Supply.
 Micro Controller.
 Density Sensors.
 Led’s.
REGULATED POWER SUPPLY
 . A Regulated Power Supply is the Power Supply with Rectification, Filtering and Regulation being done on the AC mains to get a Regulated power supply for Microcontroller and for the other devices being interfaced to it.
 A power supply can by broken down into a series of blocks, each of which performs a particular function.
BLOCK DIAGRAM OF TYPICAL LINEAR POWER SUPPLY
RECTIFIER
 A circuit which is used to convert a.c to dc is known as RECTIFIER. The process of conversion a.c to d.c is called “rectification”.
TYPES OF RECTIFIERS:
 Half wave Rectifier
 Full wave rectifier
 1. Centre tap full wave rectifier.
 2. Bridge type full bridge rectifier.
BRIDGE RECTFIER
FILTER
 A Filter is a device which removes the a.c component of rectifier output but allows the d.c component to reach the load.
REGULATOR (LM78XX)
FEATERS OF REGULTOR(78XX)
 Output Current of 1.5A .
 Output Voltage Tolerance of 5%.
 Internal thermal overload protection.
 Internal Short-Circuit Limited.
 Output Voltage 5.0V, 6V, 8V, 9V, 10V, 12V, 15V, 18V, 24V.
MICRO CONTROLLER
 Micro controller is a micro computer with few other applications for specific devices on a single chip.
 In this project work the micro-controller is playing a major role.
 Micro-controllers were originally used as components in complicated process-control systems.
BLOCK DIAGRAM OF 8051 MICRO CONTROLLER
PIN DIAGRAM OF 8051
PIN DISCRIPTION
 VCC : Supply Voltage
 GND : Ground
 PORT 0
 PORT 1
 PORT 2
 PORT 3
 RST : Reset
 ALE/PROG : Address Latch Enable
 PSEN : Program Store Enable
 EA : External Access Enable
 XTAL 1
 XTAL 2
Port 0:
 Port 0 is an 8-bit open drain bidirectional I/O port.
 As an output port, each pin can sink eight TTL inputs.
 When 1s are written to port 0 pins, the pins can be used as high- impedance inputs.
PORT 1:
 Port 1 is an 8-bit bidirectional I/O port with internal pull-ups.
 The Port 1 output buffers can sink/source four TTL inputs.
ALE/PROG:
 Address Latch Enable (ALE) is an output pulse for latching the low byte of the address during accesses to external memory.
PSEN:
 Program Store Enable (PSEN) is the read strobe to external program memory.
EA/VPP:
 External Access Enable. EA must be strapped to GND in order to enable the device to fetch code from external program memory locations starting at 0000H up to FFH.
XTAL1 & XTAL2:
 Input to the inverting oscillator amplifier and input to the internal clock operating circuit.
 Output from the inverting oscillator amplifier.
OSCILLATER CHARACTERISTICS
GENERAL VIEW OF MICRO CONTROLLER
SOFTWARE REQUIRED
 Embedded C
 Keil software

plz send me its circiut diagram & programming of the microcontroller details that how to implement it. plz its urgent

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