Weather Station

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Weather Station
Weather station design for measuring weather
parameters wind speed temperature and humidity
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Weather Station Team
Imad Rabayaa
Abdulmjeed Safa
Dr.Imad Braik
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Outline

• Definition problem .
• Layout of the design.
• ( practical technical ) constraints of weather
  station design.
• Using hardware to measure weather parameters.
• Implementing software solutions to the problem.
• practical tests .

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Definition problem
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Layout of the Design

• Block diagram

Sensors
Sensors
Tx
Rx
PACK
BASE
RS232
PC
LCD
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Working together

• The layout of this product will offer hardware
  solutions that integrate with the power of the PC.

PC
Pack
2.4 GHZ
Base
RS 232
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Practical Constraints
Type Description
Economic The cost to build will be 500 approximately .
Environmental The weather station will be able to operate in temperatures from -30C to 60C.
Environmental The weather station will be constructed with environmentally friendly products.
Sustainability Outdoor pack will be able to withstand outside conditions, with minimal maintenance.
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Technical Constraints
Name Description
Transmission Distance (Pack to Base) The distance will be 100 meters indoor.
Communication Protocol (Base to PC) The weather stations base will communicate with PC serially .
Radio Frequency Transmission frequency will be 2.4 GHZ.
Memory Requirements The base microcontroller will have enough memory to store 12 hours of data.
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Hard ware

• Common hardware components .
• - Micro controller .
• - Humidity sensor.
• - Temperature sensor .
• Base hardware components .
• - LCD .
• - Wireless (Rx) .
• Pack hardware components .
• - Anemometer sensor.
• - Wireless (Tx) .

LCD Liquid Crystal Display
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Common hardware components

• Micro controller ( PIC 16f877 )
• 10-bit ADC module.
• Timers .
• SSP .
• USART .
• CCP.

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Common hardware components

• Humidity Sensor
• There are several devices used to measure
  relative humidity.
• A stable design using hygrometer HS1101 with a
  TLC-555 timer .
• RH 565.1- 0.0767 f

RH Relative Humidity
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• Humidity Circuit

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Humidity Sensor (output)
RH 50
RH 91
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Common hardware components

• Temperature Sensor
• ICTS LM35 used in the design .
• It has an output voltage
• that is proportional to the
• Celsius temperature.
• Temperature (oC) 5 Vout 100 / 1023 (oC /V)
  .

ICTS Integrated Circuit Temperature Sensor
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• Temperature sensor Circuit

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Temperature Sensor (output)
_at_ Input voltage 5v Temperature 22 oC
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Pack hardware components

• Anemometer
• The basic cause of wind can be attributed to
  variation in temperature.
• Starting speed 0.3 m/s.
• Electrical output 3.1042 HZ .
• Power Consumption 0.3.1.2 mA.

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Anemometer (output)
Wind Speed 2.7 m/s
WS Wind Speed
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Pack hardware components

• Power supply
• The power supply for the pack needs to be as
  efficient as possible .
• Since the pack is powered
• from batteries, it will not require
• any rectification .

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Hardware components

• Wireless XBee Transmitter Receiver.
• 1- High Performance.
• 2- Low Power.
• 3- Advanced and
• Networking Security.
• 4- bidirectional transmission.
• 5- 10 bit ADC.

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Base hardware components

• Power supply
• The power supply for the base
• needs to be accurate enough for the
  microcontroller to function properly .
• LCD
• 2 X 16 character matrix .
• On-board controller .
• Backlit display .

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software
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Applications
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Difficulties

• pressure sensor is difficult to obtain.
• Fault tolerance and nature of sensors adds
  complexity to hardware and software .
• wireless.
• Low output frequency of the anemometer .

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Conclusion recommendation

• Hardware and software are integrated to solve the
  problem.
• Parallel implementation of designed components
  allows problems to surface early in the
  process.less
• wireless system used in the station is
  professional for long distances without data
  losses .
• system is ready to be used by another students to
  complete building a whole weather station .

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THANK YOU

• Questions?