期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2014
卷号：6
期号：5
页码：17
DOI：10.5121/ijwmn.2014.6502
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Wireless sensor nodes are usually deployed in not easily accessible places to provide solution to a widerange of application such as environmental, medical and structural monitoring. They are spatiallydistributed and as a result are usually powered from batteries. Due to the limitation in providing powerwith batteries, which must be manually replaced when they are depleted, and location constraints inwireless sensor network causes a major setback on performance and lifetime of WSNs. This difficulty inbattery replacement and cost led to a growing interest in energy harvesting. The current practice in energyharvesting for sensor networks is based on practical and simulation approach. The evaluation andvalidation of the WSN systems is mostly done using simulation and practical implementation. Simulation iswidely used especially for its great advantage in evaluating network systems. Its disadvantages such as thelong time taken to simulate and not being economical as it implements data without proper analysis of allthat is involved ,wasting useful resources cannot be ignored. In most times, the energy scavenged is directlywired to the sensor nodes. We, therefore, argue that simulation – based and practical implementation ofWSN energy harvesting system should be further strengthened through mathematical analysis and designprocedures. In this work, we designed and modeled the energy harvesting system for wireless sensor nodesbased on the input and output parameters of the energy sources and sensor nodes. We also introduced theuse of supercapacitor as buffer and intermittent source for the sensor node. The model was further tested ina Matlab environment, and found to yield a very good approach for system design.
关键词：Wireless Sensor Networks (WSNs); Mathematical Analysis; Energy Harvesting; Simulation.
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