PRESENTATIONON

“EMBEDDED SYSTEMS USING 8051 MICROCONTROLLER”

By namit sood

• The embedded system is a combination of computer hardware, software additional electrical & mechanical parts

• A computer is used in such devices primarily as a means to simplify the system design and to provide flexibility.

• Embedded systems employ the use of a RTOS (Real-Time Operating System).

Introduction to embedded systems

BLOCK DIAGRAM

Microcontroller

RAM ROM

I/O Port Timer

Serial COM Port

CPU

• A smaller computer.• On-chip RAM, ROM, I/O ports...• Example:- Motorola’s 6811, Intel’s 8051 and PIC 16X

A single chip

Microcontroller

The 8051 Microcontroller :• The 8051 is the first

microcontroller of the MCS-51 family introduced by Intel Corporation at the end of the 1970’s.

• The 8051 family characteristics:

○ The 8051 family characteristics:○ 4K Bytes ROM○ 128 Bytes RAM○ two timer/counters (16 bit)○ A serial port○ 32 input/output port○ Interrupt controller

8051 Internal Architecture

HOME AUTOMATION USING 8051 MICROCONTROLLER Home automation (also known as domotics)

refers to the automatic and electronic control of household features, activity, and appliances. Various control systems are utilized in this residential extension of building automation. Some components of an automated home may include the centralized control of security locks on doors and gates, appliances, windows, lighting, surveillance cameras and HVAC systems 

Keil µVision IDEThe µVision IDE from Keil

combines project management, make facilities, source code editing, program debugging, and complete simulation in one powerful environment. The µVision development platform is easy-to-use and helping you quickly create embedded programs that work. The µVision editor and debugger are integrated in a single application that provides a seamless embedded project development environment.

The power supply circuit comprises of four basic parts:The transformer steps down the 220 V a/c. into 12 V a/c. The transformer work on the principle of magnetic induction, where two coils: primary and secondary are wound around an iron core.

TRANSFORMERBRIDGE

RECTIFIER SHUNT CAPACITOR

VOLTAGE REGULATOR

VOLTAGE REGULATOR

VOLTAGE REGULATOR

Power supply module

HOW WE MADE OUR PROJECTHARDWARE USED—1.Pcb board2.Lcd display, ic mounter3.capacitors,resistors,diodes led4. 8051 microcontroller, crystal oscillator5. Centre tap transformer , relays, transistors6. Bulb holders and ac switches 7. Bluetooth module,15w bulbs Jumper wires and single strand wires and a

andriod phone with buetooth app

IMAGES OF MATERIALS USED

PICTORIAL EXPLAINATIONS

CONTINUE After making of voltage regulated power

supply we joined lcd and ic mounter on pcb board.

Then crystal oscillator is mounted on pcb with capacitor and resistance for reset pin of ic .

Three relays are mounted on pcb in respective association with transistor, resistors.

Buetooth module is mounted on pcb. Finally 8051 is programmed with one

program that interfaces lcd ,bluetooth module simultaneously. Holders and switch is joined at respective positions.

FINAL PROJECT

THANK YOU