Journal
JOURNAL OF AGRICULTURAL ENGINEERING
Volume 45, Issue 2, Pages 70-79Publisher
PAGEPRESS PUBL
DOI: 10.4081/jae.2014.237
Keywords
wireless sensors network; ZigBee protocol; information technologies; agriculture; fruit diameter sensors
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Funding
- POR PUGLIA - Asse I Linea 1.1 - Azione 1.1.2
- Bando Aiuti agli Investimenti in Ricerca per le PMI
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An innovative wireless monitoring system for measuring greenhouse climatic parameters was developed to overcome the problems related to wires cabling such as presence of a dense net of wires hampering the cultivation practices, wires subjected to high temperature and relative humidity, rodents that can damage wires. The system exploits battery-powered environmental sensors, such as air temperature and relative humidity sensors, wind speed and direction, and solar radiation sensors, integrated in the contest of an 802.15.4-based wireless sensors network. Besides, a fruit diameter measurement sensor was integrated into the system. This approach guarantees flexibility, ease of deployment and low power consumption. Data collected from the greenhouse are then sent to a remote server via a general packet radio service link. The proposed solution has been implemented in a real environment. The test of the communication system showed that 0.3% of the sent data packed were lost; the climatic parameters measured with the wireless system were compared with data collected by the wired system showing a mean value of the absolute difference equal to 0.6 degrees C for the value of the greenhouse air temperature. The wireless climate monitoring system showed a good reliability, while the sensor node batteries showed a lifetime of 530 days.
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