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A great amount of work addressed methods for predicting the battery lifetime in wireless sensor\udsystems. In spite of these efforts, the reported experimental results demonstrate that the duty-\udcycle current average method, which is widely used to this aim, fails in accurately estimating the\udbattery life time of most of the presented wireless sensor system applications. The aim of this paper\udis to experimentally assess the duty-cycle current average method in order to give more effective\udinsight on the effectiveness of the method. An electronic metering system, based on a dedicated\udPCB, has been designed and developed to experimentally measure node current consumption\udprofiles and charge extracted from the battery in two selected case studies. A battery lifetime\udmeasurement (during 30 days) has been carried out. Experimental results have been assessed and\udcompared with estimations given by using the duty-cycle current average method. Based on the\udmeasurement results, we show that the assumptions on which the method is based do not hold in\udreal operating cases. The rationality of the duty-cycle current average method needs reconsidering

wireless sensor network

Experimental Assessment of the Battery Lifetime in WSN Based on the &amp;lt;i&amp;gt;Duty&amp;lt;/i&amp;gt;-&amp;lt;i&amp;gt;Cycle&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;Current&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;Average&amp;lt;/i&amp;gt; Method