produceD BY-=-SWAraj naYAK

OVERVIEW:-1. About embedded system2. Block description of the system3. Sensors4. control unit5. Software6. Coding7. Actuator8. Examples9. Advantage10. Disadvantage11. Application12. Thank u.

About EMBEDDED SYSTEMS • System is the collecting of entities (people,

machine servers)that are work together and interact towards some end. This is called system.

Embedded systems is nothing but the combination of b both hardware and software. • It not only deals with the combination rather

we can say as synchronization of both hardware and software

BLOCK DESCRIPTION OF THE SYSTEM

SENSORSCONTROL

UNIT ACTUATOR

SENSOR It is a mechanical or electrical or electronic device which is used to sense the change in a physical model and give the o/p in electrical signal. Here some sensors -: IR, humidity , T-shop , PIR(passive infra red) , ultrasonic , piezoelectric , smoke , accelometer. The system here, being just a prototype uses two IR sensors

with a range of 1-3m. One sensor is placed in front of the vehicle and one at the rear end. Based on the signals from these sensors the vehicle will move.

Control unit-:Control unit is that which is used to control the system or model . Here control unit means the micro-controller.

Microcontrollers are used in automatically controlled products and devices, such as automobile engine control systems, implantable remote controls, office machines, appliances, power tools, toys and other embedded systems. This is cheaper and contains less space.

Atmel -:It is a corporation that has made most of the micro-controller. There is 2 family. 1)8051 family (80c51, 80c52) 2)avr family (at mega 8, at mega 16, at mega 32)

MICROCONTROLLER MICROPROCESSORS

Microcontroller has a cpu in addition of fixed amount of RAM,ROM and other peripherals all embedded in a single chip.

Microcontrollers are designed to perform specific task. Specific means applications where the relationship of input and output is defined.

Microprocessor is an ic which has only a cpu inside it. It don’t have RAM,ROM and other peripheral on the chip.

Microprocessor find application where tasks are unspecific like developing software ,games, web site, photo editing, creating documents etc.

MICROCONTROLLER VS MICROPROCESSOR

1) Software's are avr studio (for at mega 16)

avr studio is has 6 versions.

Here we are writing the code.

2) Then WinAvr is used for compiling.

In this it the C code is converted to hex format.

3) Then sinaprog is used to burn the micro-controller. Keil-8051

Flash magic-to burn 8051 MPLabIDE-PIC

soft-wares -:

(THIS CODE IN AT MEGA 16.)

#include<Avr/io.h>

#include<util/delay.h>

void main()

{

DDRA=255;

while(1)

{

PORTA=0b00000101;

_delay_ms(1000);

}

}

COADING -:(This code is only to move the bot forward.)

An actuator is a type of motor that is responsible for moving or controlling a mechanism or system.

It is a device used to convert one form of energy to another.

It is operated by a source of energy, typically electric current, hydraulic fluid pressure, or pneumatics pressure, and converts that energy into motion. An actuator is the mechanism by which a control system acts upon an environment. The control system can be simple (a fixed mechanical or electronic system), software-based (e.g. a printer driver, robot control system), a human, or any other input.

Actuator-:

The actuator used in this system is a DC Motor. The motor is interfaced with the microcontroller using the motor

driving IC L293D. This IC has an H-bridge built into it, which allows the motor to be run

in both clockwise and anti-clockwise by changing the polarity. This motor is responsible for the movement of the vehicle. The L293D is designed to provide bidirectional drive currents of up to

600-mA at voltages from 4.5 V to 36 V.

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ACTUATORS

EXAMPLES OF EMBEDDED SYSTEMS

1. It makes the work faster.

2. Man labor is reduced.

3. Easier to use.

4. Lead to a luxurious life.

ADVANTAGES OF EMBEDDED SYSTEM

it is costlier. It becomes difficult to use for some sophisticated

design.

Applications-:

Disadvantage of embedded system

Mobile phone Digital camera Robots Automatic Chocolate Vending Machine Stepper motor controllers for a robotics system Washing or cooking system Multitasking Toys Microcontroller- based single or multi-displaydigital panel meter for voltage, current, resistanceand frequency Keyboard controller

Hollow graphic projection will be the biggest achievement .

Escalator . Auto parking ,Auto driving, sounds on vehicles . In medical, military, navy, aerospace they are using

embedded system.

IN EVERY AUTOMATION,,

EMBEDDED SYSTEMS ARE

USED. SO THIS HAS A

LOT OF APPLICATIONS.

APPLICATION-:

THANKS A LOTANY QURIES????

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