DocumentCode :
3763341
Title :
Wi-Fi connected environmental measurement system by small-scale solar cell
Author :
Yoshinori Matsumoto;Yang Ishigaki;Kenji Tanaka
Author_Institution :
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, Japan
fYear :
2015
Firstpage :
761
Lastpage :
764
Abstract :
An environmental measurement system was developed using a low-power sensing module, IEEE 802.11 (Wi-Fi) connection module, and a small solar cell and battery. An Arduino-based sensing module was used for many kinds of analog/digital outputs sensors with the Arduino software library. The data from the module were sent via Wi-Fi HTTP(S) clients operation, and collected by MySQL server using PHP (Hypertext Preprocessor) uploading code. The sleep and wakeup strategy controlled by a real-time clock achieved an average system power consumption of 18 mW. The system also checked its own condition by measuring battery voltage and temperature. It operated on a small 0.8 W solar cell and 1500-mAh Lithium iron phosphate battery. Data on the MySQL server were downloaded, and visualized the sensing data on Google Maps. Visualizations and log data help users understand environmental contamination levels in a farm, garden, forest, etc.
Keywords :
"Batteries","IEEE 802.11 Standard","Sensors","Pollution measurement","Battery charge measurement","Temperature measurement","Photovoltaic cells"
Publisher :
ieee
Conference_Titel :
Sensing Technology (ICST), 2015 9th International Conference on
Electronic_ISBN :
2156-8073
Type :
conf
DOI :
10.1109/ICSensT.2015.7438498
Filename :
7438498
Link To Document :
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