Abstract:
The development of an automated weather station with remote data transmission
capability is presented. The complete system consists of three separate modules for data
collection, data storage and data communication. The modules communicate serially and
are controlled by three separate PIC18F452 microcontrollers. The data collection module
is interfaced to a set of sensors to collect weather parameters such as temperature,
humidity, wind speed, wind direction, pressure and rainfall. The data storage module saves
the captured data in real-time to a micro secure digital (SD) card. The data transmission
module transmits data to a central station through a global system for mobile
communication (GSM) or a general packet radio service (GPRS) network. The weather
data can be viewed in real-time through a graphical user interface (GUI). The modular
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nature of the design allows the user to replace the data transmission module by a radio
frequency (RF) link to transmit data to locations within 100 meters
