Abstract
A meteorological data acquisition system is built using a PIC16F877A microcontroller and electric output-based sensors. This system is programmed in C language using the PCWH compiler. It is smart, accurate, cheap, small, light and easily movable. It is designed to automatically get instantaneous measurements of air temperature, atmospheric pressure, and relative humidity. Depending on their utilisation, these measurements are collected with repetition rate tuneable from one minute to one hour. They are displayed on LCD screen and transferred to a personal computer where they are stored and processed. As an application, such data are recorded in situ and used to estimate the radio refractivity of air near the ground in real time. This parameter is necessary to account for the propagation of radiofrequency waves through the lower atmosphere, during wireless transmissions.
Highlights
Nowadays, new electronic components and integrated circuits produced by various manufacturers and dedicated to the electronic instrumentation, are available in the market
In the case of weather observations, many meteorological stations are equipped with data collection platforms made of such devices and especially designed to automatically record ground measurements such as the time variations of solar radiation, air temperature, atmospheric pressure, relative humidity, wind speed and precipitation ratio [8]
Thanks to the electric sensors and microcontroller chosen to build such a system, ground measurements of atmospheric pressure, air temperature, and relative humidity have been automatically collected with a reasonably good precision (~1%). These data are displayed on LCD screen and transferred every five minutes to a personal computer where they are archived and processed
Summary
New electronic components and integrated circuits produced by various manufacturers and dedicated to the electronic instrumentation, are available in the market. In the case of weather observations, many meteorological stations are equipped with data collection platforms made of such devices and especially designed to automatically record ground measurements such as the time variations of solar radiation, air temperature, atmospheric pressure, relative humidity, wind speed and precipitation ratio [8]. The atmospheric data collected by such platforms near the ground are essential for the characterization of the present climate change and its perturbations on the terrestrial environment In spite of their high investment costs, this kind of automated system has the advantage of avoiding the tedious work of handy records, consisting in reporting the meteorological measurements on a register, as practiced in the past. Such a microcontroller has been chosen owing to its very good performance, programming facilities, availability and economical advantages This system is designed to mainly record air temperature, atmospheric pressure, and relative humidity data near the ground. These data can be usefully exploited to probe the lower atmosphere and study the anomalous propagation of RF waves
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Communications, Network and System Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
