Wireless on-Air Weather Cum Spy Station

8/3/2019 Wireless on-Air Weather Cum Spy Station

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WIRELESS ON-AIR WEATHER

CUM SPY STATION

Yoganand Gadekar 70491Santosh Toraskar 70492Prajyot Parkar 70493Pritam Thomke 70495



INTRODUCTION

Weather Monitoring is an Important aspect.

Monitoring few basic conditions can help indetecting natural calamities.

Generally We check weather on TV or Radio. This Project Helps in Monitoring Basic Weather

Conditions.



EXISTING TECHKNOWLOGY



BASIC BLOCKS

REMOTE STATION.-Transmitter 434MHz.- Sensors.

BASE STATION.-Receiver 434MHz.

-Interface to Computer.

POWER SUPPLY SECTION.



H/W REQUIREMENTS

RS232

MAX 232

Transmitter Module

Receiver Module Antenna

PIC16f873

PIC Programmer



REMOTE STATION

Solar Powered And Wakes up once A Minute toCollect and Transfer Data

Microcontroller PIC16F873

Sensors Used: Humidity, Temperature, Image



Humidity Sensor HS1101 Combined with TLC555Produces Humidity Dependent Frequency

R.H = 565.1-0.0767*F



Temperature Sensor LM335

O/P of LM335 Equals Absolute Temperature inDegree Kelvin Divided by 100

Vout= Temperature(K)/100

In Degree Celsius = 100*VOUT – 273



Includes Wireless Video Camera.

Remote Station is nothing but A “RC ControlledMachine” which can Fly up to A Height of 30FT.



MICROCONTROLLER: PIC16F873

3 Bidirectional ports

3 Timer modules

Power down mode( sleep mode)



TRANSMITTER

Connected at the O/P of Remote Station

Transmits using ASK.

Transmitter Characteristics:-

Condition:-50E Load,434 MHz

Parameter Min. Typ. Max. Unit

O/P Power 1 3 6 mW

Supply Current 9 10 19 mA

Supply Vtg.Range

3 5 12 v

Data Rate 300 1K 10K bps



Antenna used : whip antenna

Whip antenna is the common eg of monopoleantenna

Toroidal radiation pattern Vertically polarised

Freq:434MHz

Lenghth:5in Dia:0.2in



BASE STATION

Using PIC16F873

Detect And Decode Data From The Receiver (ASK Demodulation)

Perform Error Correction On Received Data-Hamming Code.

Encode The Received Data Into ASCII Format

Transmit The ASCII Data To RS232 Port (8N1

Format) Detect And Respond To RS232 For Latest And

Previous Data.



BASIC BLOCKS OF RECEIVER

Power Supply Block

Receiver Module

Data Processing Block

Interfacing Block Camera Receiver

RC Controller



RECEIVER

Uses ASK

Receiver Characteristics:-

Paramete

r

Min. Typ. Max. Unit

Sensitivity -104 -102 dBm

ASK outlogic High

0.7*vcc V

ASK outlogic Low 0.3*Vcc V

Supply Current

2.4 3 mA

Supply Vtg. +4.75 +5 +5.25 V

Data Rate 300 1K 10K bps



MERITS

Remote Station is A On-Air Device Which can beControlled using Radio Signals.

Remote Station is Solar Powered.

Wireless Camera on Remote Station gives live Videos at an Effective Height of 30Ft.

Remote station can be used for fire



THANK YOU

Wireless on-Air Weather Cum Spy Station

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