Jammer - B.E EEE project

EFFECTIVE SIGNAL / FREQUENCY EFFECTIVE SIGNAL / FREQUENCY JAMMER SYSTEM FOR SECURITY JAMMER SYSTEM FOR SECURITY

AND PROTECTIONAND PROTECTION

WITH COLLISION AVOIDANCE AND METAL DETECTIONWITH COLLISION AVOIDANCE AND METAL DETECTION

ABOUT THE PROJECTABOUT THE PROJECT

Our project is a effective frequency / signal jammer for security and Our project is a effective frequency / signal jammer for security and protection system with the features likeprotection system with the features like

1. FREQUENCY JAMMER1. FREQUENCY JAMMER

This is used to avoid bomb explosions which is made This is used to avoid bomb explosions which is made through remote operations.through remote operations.

2. METAL DETECTION2. METAL DETECTION

3. COLLISION AVOIDANCE3. COLLISION AVOIDANCE

JAMMER:

Jammer is a device used in electronic warfare to inhibit or halt the transmission of signals . Signal jammers used for the purpose of jamming the signals in certain locations. For example, VIP protection,bomb squads,anti- terror units,hospitals,etc.METAL/BOMB DETECTION:

The detector that gives the signal when it detects the presence of metal is known as metal detector.

If it detects the unwanted/hazardous metal alarm can be made as the security policy of the system.

COLLISION AVOIDANCE:The systems, which detects any obstacle within the particular

range are known as obstacle detection system.Here it will detect any obstacles in front of the vehicles and if

found it will stop or slow down the vehicle based on our requirement.In our project we are using IR sensor to detect the obstacle.

In our project we are using inductive proximity sensor to detect the metal.

Application areas of metal detecting technology include securityinspection at airports, government buildings & other public places.

SPECIAL FEATURES & POWERS OF SPECIAL FEATURES & POWERS OF THE PROJECTTHE PROJECT

Vehicle model with movement of Forward & ReverseVehicle model with movement of Forward & Reverse Obstacle sensing and collision avoidance.Obstacle sensing and collision avoidance. Metal detection & AlarmMetal detection & Alarm Microcontroller - FLASH & EEPROM Microcontroller - FLASH & EEPROM Mechanical model for operationsMechanical model for operations Stepper motor & stepper power supply boardStepper motor & stepper power supply board Optocoupler with stepper driver boardOptocoupler with stepper driver board Sensors - Metal detection & ObstacleSensors - Metal detection & Obstacle Power sourcePower source RF FrequencyRF Frequency

RF receiver module-433.92 MhzRF receiver module-433.92 MhzRF transmitter module-433.92 MhzRF transmitter module-433.92 Mhz

POWER SUPPLY UNIT

•Compatible with MCS-51 TM products

•4K Bytes of In-system Reprogrammable Flash Memory-

Endurance 1000 Write / Erase cycles

•Fully Static operation : 0 Hz to 24 MHz

•Three-level program memory lock

•128 * 8 –bit Internal RAM

•32 Programmable I/o Lines

•Two 16-bit Timer / Counters

•Six Interrupt sources

•Programmable serial channel

•Low-power idle and Power-down Modes

MICROCONTROLLER FEATURES

CIRCUIT DIAGRAM

SIGNAL JAMMER FEATURES

• Jamming all frequency signals

• Effective coverage area in radius

• Low power , Lower radiation

• Harmless to human health

RF FEATURESRF FEATURES

Complete super regenerative RF Transmitter & Receiver Complete super regenerative RF Transmitter & Receiver module operating @ 433.92 MHzmodule operating @ 433.92 MHz

Compact in size & modelCompact in size & model

No external components & No tuning is requiredNo external components & No tuning is required

Low power consumptionLow power consumption

Jammers - Suitable places

• Places where the signals has to be restricted like prison , police stations etc.

• Gas stations, pipelines etc.

• Live performance theatre (s) , Auditorium etc.

• Schools, Colleges, Libraries, Conference halls, Examination halls.

• Banks, ATMs.

• Temple, Church & Mosques etc.

• Wedding Ceremonies & etc.

METAL DETECTOR When ferrous & non ferrous material come closer to the proximity sensor it senses & produces an output signal. It has three terminals • Supply• Ground• OutputPRINCIPLE:

The dc supply is used to operate a hartley oscillator in the sensing head.The high frequency signal developed in the oscillator is fed into the coil.As a result magnetic field is produced in the area immediately adjacent to the the sensing head. If any material come within this magnetic field, the oscillator circuit will be loaded & the amplitude of the oscillator will drop.This drop in amplitude is the output of the detector.

In general there are two types of proximity sensors• Inductive proximity sensor • Magnetic proximity sensorTypes of inductive proximity sensor• NPN proximity sensor• PNP proximity sensorNPN proximity sensor

When no metal is approaching the sensors its outputs will be high. When a metal approaches the sensor its output will be low.SPECIFICATIONS

Sensing distance-10 mmSensing speed- 200 Hz

COLLISION AVOIDANCECOLLISION AVOIDANCE• Collision can be avoided by detecting the obstacle in front of the vehicleCollision can be avoided by detecting the obstacle in front of the vehicle

• The system, which detect any obstacle within a particular range, are known The system, which detect any obstacle within a particular range, are known as obstacle detection systemas obstacle detection system

IRSensor:IRSensor:

IR Sensor comprises of IR Emitter & IR Detector.IR Sensor comprises of IR Emitter & IR Detector.

IR Sensor wIR Sensor work by sending out a beam of IR light and then cork by sending out a beam of IR light and then computing the omputing the distance to any near by objects from the characteristics of the returned distance to any near by objects from the characteristics of the returned signal.signal.

We use simple IR sensor essentially just an IR LED & IR photodiode.We use simple IR sensor essentially just an IR LED & IR photodiode.

STEPPER DRIVER LSTEPPER DRIVER LOGICOGICThe Stepper driver logic consist of buffer,opto-coupler,predriver and The Stepper driver logic consist of buffer,opto-coupler,predriver and

driver.driver.BUFFER:BUFFER:

Buffer interfaces Microcontroller with high level circuits.Buffer interfaces Microcontroller with high level circuits.OPTO-COUPLER:OPTO-COUPLER: It cIt consists of opto-emitter and phototransistor.onsists of opto-emitter and phototransistor. It is mainly used for backup protection.It is mainly used for backup protection.PRE-DRIVER:PRE-DRIVER: Couple the TIP 122 to the opto-coupler.Couple the TIP 122 to the opto-coupler. We use the driver SL100 to boost the current level.We use the driver SL100 to boost the current level.DRIVER:DRIVER: Amplify the current .Amplify the current . Amplifies the 50mA current to 2A.Amplifies the 50mA current to 2A.

STEPPER MSTEPPER MOTOROTOR A Typical single axis stepper motor consists of a stepper controller,a motor A Typical single axis stepper motor consists of a stepper controller,a motor

drive, a motor and a power supply.drive, a motor and a power supply.

A stepper is typically commanded by two digital inputs.A stepper is typically commanded by two digital inputs.

A digital pulse train and a direction bit.A digital pulse train and a direction bit.

The frequency of the pulse train controls the velocity of the motor.The frequency of the pulse train controls the velocity of the motor.

The direction signal determines in which direction the motorThe direction signal determines in which direction the motorwill rotate.will rotate.

In our project two stepper motors are used. In our project two stepper motors are used. One fOne for Forward and Reverse or Forward and Reverse movement,another for right & left movement.movement,another for right & left movement.

Based on the command given to the the Microcontroller, theBased on the command given to the the Microcontroller, thevehicle does its operation.vehicle does its operation.

CCONCLUSIONONCLUSION Signal jammer can be used in any field where Signal jammer can be used in any field where

the signals have to be necessarily jammed in order the signals have to be necessarily jammed in order to avoid undesirable effectsto avoid undesirable effectsBut it should not be But it should not be misused in such a way to affect others privacymisused in such a way to affect others privacy Our Our project holds good if it is used for constructive project holds good if it is used for constructive purposes and in the fields where it is desirablepurposes and in the fields where it is desirable In In future as a further development of the same process, future as a further development of the same process, various new features can be implementedvarious new features can be implemented