Wireless Security SystemWireless Security System

Group #14Group #14Yuncheng WangYuncheng Wang

Chris OvercashChris Overcash

John PettyJohn Petty

Chun Hong LinChun Hong Lin

IntroductionIntroduction

EfficiencyEfficiency– no cabling requiredno cabling required– can be monitored from mobile devicecan be monitored from mobile device

ReliabilityReliability– camera more self sufficientcamera more self sufficient– less chance of cabling being cutless chance of cabling being cut

Block DiagramsBlock Diagrams

Pow er

Regulate 5V Pow er

Image

Motion

AquireImage

AquireSensor

Data

ProcessImage and

SensorData

TransmitImage and

SensorData

Heat

RF Signal

Block DiagramsBlock Diagrams

Pow er

Convert Datato USB

Transmission

ReceiveImage and

SensorData

Heat

RF Signal

ComputerData

Motion DetectorMotion Detector

Slim Line PIRSlim Line PIR – 50 x 50 ft. coverage

Advanced

– RF protection up to 1GHz

– Enhanced high & low

– Temperature compensation

Range of DetectorRange of Detector

Has 34 beams in Has 34 beams in 3 detection layers3 detection layers

Optional lenses Optional lenses allow 10x90 ft allow 10x90 ft (3x27m) coverage(3x27m) coverage

How the Detector WorksHow the Detector Works

Object Breaks Object Breaks multiple PIR multiple PIR beams.beams.

The PIR will have The PIR will have an output signal as an output signal as shown.shown.

This signal will be This signal will be used to tell the used to tell the camera to take a camera to take a picture. picture.

CameraCamera

Black and WhiteBlack and White CMOSCMOS 8 pixel digital 8 pixel digital

output resolution output resolution Min illumination 1 Min illumination 1

lux lux

CameraCamera

Resolution : 384 x 288 pixels

Programmable frame rate (0.5~50 fps)

PIC ChipPIC Chip

Parallel to Serial Parallel to Serial interfaceinterface

625 kbps625 kbps Universal Serial BusUniversal Serial Bus Universal Universal

Synchronous Synchronous Asynchronous Asynchronous ReceiverReceiver

TransceiverTransceiver

Transmits the image to the laptop Transmits the image to the laptop computercomputer

Spread Spectrum Frequency HoppingSpread Spectrum Frequency Hopping 2.402 - 2.478 GHZ.2.402 - 2.478 GHZ. Data rate 882KbpsData rate 882Kbps Range of 300 ft. indoors, Range of 300 ft. indoors,

3000 ft. outdoors 3000 ft. outdoors

Universal Serial BusUniversal Serial Bus

Plug and Play capability Distributes electrical power Bi-directional data flow Full duplex communication

ComputerComputer

Min. Requirements– 133 MHz 133 MHz

– 32 Megs Ram32 Megs Ram

– Windows 95 with Windows 95 with USB supportUSB support

– 800X600 pixel 800X600 pixel displaydisplay

– 256 color 256 color

Computer and SoftwareComputer and Software 2 gigabytes of free hard drive space.2 gigabytes of free hard drive space. Small and light enough to carry around Small and light enough to carry around

easily.easily. Durability due to rough handling.Durability due to rough handling. The software must be :The software must be :

– easy to useeasy to use

– reliablereliable

– easy to maintain and upgradeeasy to maintain and upgrade

– efficient efficient

Overall Block DiagramOverall Block Diagram

M4088 1/4" B/WCamera With Digital

Output

PIC16C7458-bit CMOS

Microcontroller w ith USB

PKLR2400S10 mW

RF Tranceiver

5 V, 300 mARegulated

Pow er Supply

PIC16C7458-bit CMOS

Microcontroller w ith USB

PKLR2400S10 mW

RF Tranceiver

Laptop Computer w ithUSB Interface

11-14A3~A0

15-17OEBW EBCSB

34-40RB0~RB7

1-8D0~D7

19-22RD3~RD0

28-30RD5~RD7

Slim LinePIR

MotionSensor

Vss, Vdd,D+, D-

12,31 11,32 24 23 Vss Vdd D+ D-

Vss, Vdd3,5 20,21

25, 26TX, RX

16, 14RXD, TXD

25, 26TX, RX

16, 14RXD, TXD

Vss, Vdd3,5 20,21

Vss, Vdd12,32 11,32

Vss, Vdd9, 10

Vss, Vdd

2-3RA0~RA1

W ireless Camera w ithTransmitter

Receiver

Conclusion Conclusion

• A security system can be designed so allow a guard to patrol a building more effectively.

• The guard would also respond to an alarm more efficiently.

• Requires fewer security guards.

• Safer for the guard because he/she knows where perpetrator is located.