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Wireless Weather Station

Wireless Weather Station. Supervisor: Prof. Allam Mousa Prepared By: Ahmad A. Kashef Anas W. Hussain. Outline. What is Our Project? Importance Task and block diagram. Hardware Software Economical Study What problems that we faced? What we learnt in this course?. What is Our Project.

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Wireless Weather Station

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  1. Wireless Weather Station Supervisor: Prof. Allam Mousa Prepared By: Ahmad A. Kashef Anas W. Hussain

  2. Outline • What is Our Project? • Importance • Task and block diagram. • Hardware • Software • Economical Study • What problems that we faced? • What we learnt in this course?

  3. What is Our Project Our Project is building a complete weather station that measures the weather parameters, multiplexes them and transmits data through a wireless technique to a PC. This PC receives data and displays it using a program interface.

  4. Importance This project can be combined with a control system that is needed in many applications; such as agricultural applications (Greenhouses and farmed animal breeding ) Warm Effect needs climate monitoring. Studying of Climate requires comparing climate behaviors between different years and decades. University Need; to get information about the weather that will be presented to community through our university.

  5. BLOCK DIAGRAM

  6. Hardware

  7. Sensors

  8. TYPES OF SUGGESTED SENSORS 1. Temperature Sensor. 2. Humidity Sensor. 3. Atmospheric Pressure Sensor 4. Wind Speed Sensors

  9. Sensors Used 1- Temperature Sensor 2- Humidity Sensor

  10. Temperature SensorLM35 • Features • Calibrated directly in ° Celsius (Centigrade) • Linear +10.0 mV/°C • 0.5°C accuracy guaranteed (at +25°C) • Rated for full −55° to +150°C range • Low cost(20NIS) • Operates from 4 to 30 volts

  11. Humidity Sensor HIH-4000-002 Accuracy: 3.5% * Range: 10% - 90% * Supply Voltage: 4 Vdc to 5.8 Vdc * Operating Temp. Range: -40 to 85 °C * Cost: 150 NIS

  12. Microcontroller • We decided to use this PIC16F877A, because of many reasons; • We are familiar with this microcontroller. • Furthermore, it is available, and has available programming software. • Easy to make interface with PC . • It is easy to program. • Its memory is sufficient to save our data.

  13. PIC16F877A diagram:

  14. Wireless Techniques

  15. Wireless Techniques • There were many suggested wireless techniques: 1. Bluetooth (IEEE 802.15.1). 2. Infrared. 3. ZigBee (IEEE 802.15.4). 4. RF 433MHz. 5. GPRS

  16. Advantages & Disadvantages

  17. RF 433MHz We select this wireless link according to followings: 1- It is suitable for our project from its range(up to 60 m) and data rate(10Kbps). 2- It is easy to obtained ( available on our workshop ). 3- Low cost (200 NIS). 4- No need for LOS. 5- Point to multi-point.

  18. SOFTWARE

  19. We use software in two components : • 1 –Microcontroller . • 2 –GUI (Graphical User Interface)

  20. 1-MICROCONTROLLER: A- We use PIC C program to program PIC 16F877A. It depends specially on C language that we learnt before, so it is easy to deal with .

  21. B-PROTUES: It is a simulation program for electronics devices and components . • Just design your project and test it on PROTUES. • It is trusted and reliable.

  22. 2- GUI We use C# program with NI measurements to display our data on PC. NI measurements offer you graphs for tools that measure temperature and humidity values.

  23. GUI

  24. ECONOMICAL STUDY The cost of components of our project is : 1- Two microcontroller and their circuits (16F877A) = 100 NIS 2- RF 433MHz = 200 NIS 3- Temperature sensors and Humidity sensors = 20+150 = 170 NIS The total cost = 100 + 200 + 170 =470 NIS So our project is relatively cheep in comparison with other manufacturing devices.

  25. What problem we faced ? • The unavailability of many sensors such as; atmospheric pressure sensor, harmful gases sensors (CO2,... etc). • The latency in importing the humidity sensor. • The coding technique of RF module was hard to program. • Increasing the range of RF module.

  26. Non-synchronizing between Transmitter & Receive . • The available instruments and circuit components are expensive in comparison with international prizes. • The limited equipments and resources available in the workshop compared to number of students using these equipments.

  27. What we learnt? • Increasing our knowledge in software programs : PIC C , C# . • To be familiar with simulation program. • Troubleshooting the hardware components. • Knowledge of wireless techniques. • The principle of operating RF module. • Work under pressure.

  28. Tx and Rx

  29. ANY QUESTIONS ? THANKS

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