GSM based Car Engine GSM based Car Engine Control Control ImplementationImplementation to to

Stop Car TheftStop Car Theft INTERNAL GUIDE: Mr. B.KISHORE BABU (Head Of The Dept. - ECE)

K.LAKSHMI PRIYANKA (09TU1A04A3) K.RAJITHA (09TU1A0488)

OBJECTIVE OF THE PROJECT:OBJECTIVE OF THE PROJECT:•The main aim of this project is to implement SMS based car engine control system to prevent car theft using GSM modemCONTENTS:•Introduction•Block diagram•Schematic diagram•Hardware components•Micro controller•Features•Software components•Applications•Advantages•Conclusion

INTRODUCTION ABOUT PROJECT:INTRODUCTION ABOUT PROJECT:

Security is prime concern for every one.

Nowadays all the automotives are equipped with auto cop systems.

Even though, the thieves are breaking the barriers and steal the vehicles.

This project is the right solution for this problem.

BLOCK DIAGRAM:BLOCK DIAGRAM:

GSM Modem

MAX 232

MAX 232

Crystal

RESET

8 9 S 5 2

ContrastControl

16X2 LCD

RELAY

CAR ENGINE Locking system

EEPROM

Key Pad

BLOCK DIAGRAM DESCRIPTIONBLOCK DIAGRAM DESCRIPTION::

GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION):

8051 is the heart of the project.

A GSM modem is interfaced to microcontroller.

This modem receives the messages from control mobile and sends as input to MCU.

The MCU verify for authentication of the number and, if the number is authorized, engine control will be taken place, EEPROM is interfaced to this controller to save the engine position at every instant.

This engine position information will not be deleted even in power failure conditions.

3X4 keypad is interfaced to change the mobile number at any time.

16X2 LCD is interfaced to display user-required information.

GSM network operators have roaming facilities, user can often continue to use there mobile phones when they travel to other countries etc….

POWER SUPPLY:POWER SUPPLY:

This project uses regulated 5v, 750mA power supply. 7805 and 7812 three terminal voltage regulators are used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12v step

down transformer.

Filter Circuit

Step down T/F

Bridge rectifier Regulator

Power supply to all sections

SCHEMATIC DIAGRAM:SCHEMATIC DIAGRAM:

SCHEMATIC DIAGRAM DESCRIPTION:SCHEMATIC DIAGRAM DESCRIPTION:

AT89S52 MCU divided into total 4 ports and name as P0,P1,P2,P4(ports).

GSM modem is interfaced through MAX 232 to port3.

Port 1 is connected to LCD display the condition of appliances which are controlled by the GSM.

A upto coupler is used in between microcontroller loads which is connected to port3

Supply is given to 40 and 20th pins of MCU.

HARDWARE COMPONENTS:HARDWARE COMPONENTS:

AT89S52 Microcontroller: The AT89S52 is a low-

power, high performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory.

• 16x2 LCD:•  LCD screen consists of two

lines with 16 characters each. Contrast on display depends on the power supply voltage and whether messages are displayed in one or two lines.

• KEYPAD:• Keypad is the most

widely used input/output device.

MICRO CONTROLLER:MICRO CONTROLLER:

MICRO CONTROLLER MICRO CONTROLLER INTRODUCTION: INTRODUCTION: The AT89S52 is a low-power, high-

performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory.

The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the Indus-try-standard 89S52 instruction set and pin out.

The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

PIN DIAGRAM:PIN DIAGRAM:

PIN DESCRIOPTION:PIN DESCRIOPTION: VCC: supply voltage

GND: ground

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.

PORT 1: Port 1 is an 8-bit bidirectional I/O port with internal

pullups. The Port 1 output buffers can sink/source four TTL inputs

PORT 2 : Port 2 emits the high-order address byte during

fetches from external program memory and during accesses to external data memory that use 16-bit addresses (MOVX @ DPTR

PORT 3: Port 3 pins that are externally being pulled low will

source current (IIL) because of the pullups. Port 3 also receives some control signals for Flash programming and verification.

RST: Reset input. A high on this pin for two machine

cycles while the oscillator is running resets the device.

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 FFFFH.

XTAL2: Output from the inverting oscillator amplifier. XTAL1 and XTAL2 are the input and output, respectively, of an inverting amplifier that can be configured for use as an on-chip oscillator.

FEATURES:FEATURES:

4.0V to 5.5V Operating RangeFully Static Operation: 0 Hz to 33 MHzThree-level Program Memory Lock256 x 8-bit Internal RAM32 Programmable I/O LinesEight Interrupt SourcesWatchdog TimerDual Data PointerPower-off Flag

SOFTWARE COMPONENTS:SOFTWARE COMPONENTS:

• KEIL SOFTWARE: Keil compiler is a

software used where the machine language code is written and compiled.

• PROLOAD: Proload is a software

which accepts only hex files. Once the machine code is converted into hex code, that hex code has to be dumped into the microcontroller placed in the programmer kit and this is done by the Proload.

APPLICATIONS:APPLICATIONS:

Automotives Security.

GPS modem also can be interfaced to this unit to trace and locate the geographical

information of vehicle place.

ADVANTAGES:ADVANTAGES:

Vehicle can be controlled from any where.

Mobile number can be changed at any time.

Engine status will not be lost in power failure condition.

FUTURE SCOPE:FUTURE SCOPE:

GPS modem also can be interfaced to this unit to trace and locate the geographical information of vehicle place .

CONCLUSION:CONCLUSION:

In this project work, we have studied and implemented a complete working model using a Microcontroller. Using this project, one can control his vehicle’s car engine by means of an SMS.

ANY QUERIES:ANY QUERIES: