文档介绍：EFITA/WCCA 2005 25-28 July 2005, Vila Real, Portugal
A Wireless work for Smart
Irrigation and Environmental Monitoring:
A Position Article
Raul Morais a, A. Valente b, and C. Serôdio c
a CETAV – Centro de Estudos ológicos do Ambiente e da Vida
Universidade de Trás-os-Montes e Alto Douro, 5000-911 Vila Real, Portugal, ******@
b CETAV/UTAD, 5000-911 Vila Real, Portugal, ******@
c CETAV/UTAD, 5000-911 Vila Real, Portugal, ******@
Abstract
Traditional instrumentation based on discrete and wired solutions, presents many difficulties to measure
or pute plant physiological responses due to the large geographical areas that may be involved.
This paper describes an implementation of a wireless work for agriculture low data-rate
applications. work includes several solar powered wireless acquisition stations used on soil
moisture measurements in greenhouses and open field crops in order to improve irrigation efficiency. Soil
moisture is sensed by using the dual-probe heat-pulse method. Climate parameters such as air and soil
temperature, solar radiation and relative humidity are also measured. After acquisition, data is routed to a
base station where it is stored, analyzed and used to perform local control tasks. work protocol
uses bination of TDMA (Time Division Multiple Access) and CSMA (Carrie