Aggeliki S. Prayati

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The use of RSSI (Received Signal Strength Indicator), obtained automatically with the received messages in most sensor radios, is the popular way for estimating the location of the mobile wireless object. The great variation of RSS (Received Signal Strength), which may result in inaccurate estimations, is compensated by the fact that RSS does not require(More)
In the present work, we propose a practical RF propagation model – Free-space Outdoor Model – suitable for WSN due to the fact that it considers the most important WSN constraints and RF signal propagation path loss factors. The model is based on combining four path loss factors, which cause distortion and weakening of the RF signal, i.e.(More)
Wireless Sensor Network devices have by nature limited available energy to perform a wide range of demanding tasks. In order to maximize their operation lifetime, optimal resource management is an important challenge and its success requires methodical modeling of the factors contributing to the overall power consumption. Moreover, the power consumed is not(More)
Critical characteristics of wireless sensor networks, as being autonomous and comprising small or miniature devices are achieved at the expense of very strict available energy related limitations. Therefore, it is apparent that optimal resource management is among the most important challenges in WSNs development and success.
The paper presents the design and implementation of an innovative Integrated Development Environment, developed within the on-going European Research Project TORERO, to model and design reusable distributed control systems (DCS). This project proposes an architecture which relies on a development environment based on the Eclipse tool and the emerging(More)
As wireless sensor networks (WSNs) are being developed for a wide range of application fields of real-time monitoring and control, a design overview seems important so as to investigate alternative communication aspects while treating the WSN as a whole system. As applications become more demanding the need to consider also deployment constraints and(More)
The Function Block (FB) concept is proposed by evolving standards to address most of the problems encountered in the development process of distributed Industrial Process Measurement and Control Systems (IPMCS) applications. To increase modularity, reliability and expandability of FB-based IPMCS applications as well as to automate the development process(More)