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Wireless Weather Station

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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. – PowerPoint PPT presentation

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Title: Wireless Weather Station


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 Sensor LM35
  • Features
  • Calibrated directly in Celsius (Centigrade)
  • Linear 10.0 mV/C
  • 0.5C accuracy guaranteed (at 25C)
  • Rated for full -55 to 150C 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
(No Transcript)
23
  • 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.

24
GUI
25
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
    20150 170 NIS
  • The total cost 100 200 170 470 NIS
  • So our project is relatively cheep in comparison
    with other manufacturing devices.

26
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.

27
  • 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.

28
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.

29
Tx and Rx
30
THANKS
  • ANY QUESTIONS ?
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