António S. Lebres

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In the past years low power circuits design and networking techniques not only reduce the total power, requirements for Wireless Sensor Networks (WSNs) but also allow for supporting more complexity. In this paper we present solutions for WSN applications, and design aspects in the context of patient monitoring. The solution presented whose primary function(More)
Wireless Sensor Networks (WSNs) are spreading around in multiple fields of applications because they perform measuring tasks in a flexible way. This paper presents a survey on nowadays research efforts on the application of these WSNs to the automobile industry, to agriculture, and to wearable technologies (healthcare and athletes monitoring). From our(More)
In this work two flex sensor belts were developed to count the foetal movements in the last four weeks of pregnancy. While one is a standalone solution the other is a wireless flex sensor belt network one. A description of the type of sensors is followed by the discussion of the different types of acquisition and data treatment methodologies. The(More)
Nowadays, the users of Wireless Sensor and Actuator Networks (WSAN) are becoming more and more demanding in terms of choice and diversity of applications, and the identification of their characterization parameters is thus in order. This paper describes the WSAN characterization parameters and is an update of a previous work, but new parameters were added(More)
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