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Wireless weather monitoring system using GSM
INTRODUCTION:
Monitoring the weather conditions manually is difficult. This is the implementation of an automated system which monitors the weather conditions and sends the details through the SMS to a central station.
The weather conditions like temperature, humidity, rainfall are measured and these details are sent through SMS to a central station.
Functional Description:
In our project some parameters temperature, humidity and rainfall are measured and sent through the SMS to a central station.
All sensors to measure parameters are connected to the ADC 0809 and intern the output of the ADC is interfaced to the microcontroller which will perform the whole operation of measuring and controlling.
Here thermister is used to measure the temperature, as there is a change in temperature, the resistance changes accordingly the input voltage to the ADC also changes, and then controller reads the o/p ADC.
Like this to measure the humidity we are using humidity sensor, and this sensor will give direct o/p as a voltage according to the percentage of the humidity, then after converting to the digital value using ADC.
And while measuring all the parameters they are displayed on the LCD and sent through SMS to the central station.
At central station, there will be a GSM modem and an LCD to display the received data.