16-05-2012, 02:09 PM
intelligent traffic control system
[attachment=22153]
INTRODUCTION
ABSTRACT
Many traffic light systems operate on a timing mechanism that changes the lights after a given interval. An intelligent traffic light system senses the presence or absence of vehicles and reacts accordingly. The idea behind intelligent traffic systems is that drivers will not spend unnecessary time waiting for the traffic lights to change. Since the waiting time of the vehicles for the lights to change is optimal, the emission of carbon monoxide from the vehicles is reduced. This will give a positive effect to the green house effect towards the environment. The system developed is able to sense the presence or absence of vehicles within certain range by setting the appropriate duration for the traffic signals to react accordingly. The system can help to solve the problem of traffic congestion.
The main aim in designing and developing of the Intelligent Traffic Signal system it consists of a computer that controls the selection and timing of traffic movements in accordance to the varying demands of traffic signal as registered to the controller unit by sensors (IR). The second part is the signal visualization or in simple words is signal face. Signal faces comprise of solid red, yellow, and green lights. The third part is the detector or sensor. The sensor or detector is a device to indicate the presence of vehicles.
• HARDWARE COMPONENTS:
1. 89S52 MICROCONTROLLER
2. 555 TIMER
3. TSOP1738 IR RECEIVER.
4. IR LED.
5. POWER SUPPLY.
A BRIEF HISTORY OF 8051
In 1981, Intel corporation introduced an 8 bit microcontroller called 8051. this microcontroller had 128 bytes of RAM, 4K bytes of chip ROM, two timers, one serial port, and four ports all on a single chip. At the time it was also referred as “ A SYSTEM ON A CHIP”
The 8051 is an 8-bit processor meaning that the CPU can work only on 8 bits data at a time. Data larger than 8 bits has to be broken into 8 bits pieces to be processed by the CPU. The 8051 has a total of four I\O ports each 8 bit wide.
There are many versions of 8051 with different speeds and amount of on-chip ROM and they are all compatible with the original 8051. this means that if you write a program for one it will run on any of them.
The 8051 is an original member of the 8051 family. There are two other
members in the 8051 family of microcontrollers. They are 8052 and 8031. All the three
microcontrollers will have the same internal architecture, but they differ in the following
aspects.
[attachment=22153]
INTRODUCTION
ABSTRACT
Many traffic light systems operate on a timing mechanism that changes the lights after a given interval. An intelligent traffic light system senses the presence or absence of vehicles and reacts accordingly. The idea behind intelligent traffic systems is that drivers will not spend unnecessary time waiting for the traffic lights to change. Since the waiting time of the vehicles for the lights to change is optimal, the emission of carbon monoxide from the vehicles is reduced. This will give a positive effect to the green house effect towards the environment. The system developed is able to sense the presence or absence of vehicles within certain range by setting the appropriate duration for the traffic signals to react accordingly. The system can help to solve the problem of traffic congestion.
The main aim in designing and developing of the Intelligent Traffic Signal system it consists of a computer that controls the selection and timing of traffic movements in accordance to the varying demands of traffic signal as registered to the controller unit by sensors (IR). The second part is the signal visualization or in simple words is signal face. Signal faces comprise of solid red, yellow, and green lights. The third part is the detector or sensor. The sensor or detector is a device to indicate the presence of vehicles.
• HARDWARE COMPONENTS:
1. 89S52 MICROCONTROLLER
2. 555 TIMER
3. TSOP1738 IR RECEIVER.
4. IR LED.
5. POWER SUPPLY.
A BRIEF HISTORY OF 8051
In 1981, Intel corporation introduced an 8 bit microcontroller called 8051. this microcontroller had 128 bytes of RAM, 4K bytes of chip ROM, two timers, one serial port, and four ports all on a single chip. At the time it was also referred as “ A SYSTEM ON A CHIP”
The 8051 is an 8-bit processor meaning that the CPU can work only on 8 bits data at a time. Data larger than 8 bits has to be broken into 8 bits pieces to be processed by the CPU. The 8051 has a total of four I\O ports each 8 bit wide.
There are many versions of 8051 with different speeds and amount of on-chip ROM and they are all compatible with the original 8051. this means that if you write a program for one it will run on any of them.
The 8051 is an original member of the 8051 family. There are two other
members in the 8051 family of microcontrollers. They are 8052 and 8031. All the three
microcontrollers will have the same internal architecture, but they differ in the following
aspects.