Abstract

In this paper development and testing of a wireless sensor node that is powered by solar energy harvesting is described. Implemented wireless sensor node is characterized by low cost and consumption, long mean time between maintenance, simplicity, flexibility, modularity and miniature design in applications for monitoring of environmental parameters. As a replacement for relatively expensive battery supply and in order to minimize maintenance costs, energy harvesting solution that uses a miniature solar panel and supercapacitor is tested. This node is used for measurements of water levels of surface and underground waters for application in agriculture. For this purpose the node is expanded with a capacitive sensor for measurement of water levels, which is particularly discussed in this paper as simple and innovative solution.DOI: http://dx.doi.org/10.5755/j01.eie.22.5.16346

Highlights

  • Research in the field of wireless sensor networks (WSNs) has contributed to many areas such as disaster management, automotive, infrastructure monitoring, security and surveillance, etc

  • As a replacement for relatively expensive battery supply and in order to minimize maintenance costs, energy harvesting solution that uses a miniature solar panel and supercapacitor is tested. This node is used for measurements of water levels of surface and underground waters for application in agriculture. For this purpose the node is expanded with a capacitive sensor for measurement of water levels, which is discussed in this paper as simple and innovative solution

  • Considering that this response is noticeable only when the cable is removed from water and only for drastic water level changes, we come to the following conclusions

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Summary

INTRODUCTION

Research in the field of wireless sensor networks (WSNs) has contributed to many areas such as disaster management, automotive, infrastructure monitoring, security and surveillance, etc. The tendency is to invest a minimum of resources in low-cost systems for monitoring of environmental parameters with not optimal, but satisfactory performance. WSNs for environmental monitoring are considered to be of higher quality if they meet the following requirements: low price, reliable operation in remote field conditions, adaptability to specific application requirements, and a negligible impact on the environment. Information collected by monitoring of water levels in drainage canals can be used for timely response and prevention in case of future climate extremes or for irrigation management in normal conditions. Since the primary intention is to use a sensor node for measuring of environmental parameters in inaccessible terrains, solar energy harvesting has been added.

IMPLEMENTATION OF WIRELESS SENSOR NODE WITH ENERGY HARVESTING SUPPORT
Implementation of Solar Energy Harvesting
CAPACITIVE SENSOR FOR WATER LEVEL MEASUREMENT
RESULTS AND ANALYSIS
CONCLUSIONS
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