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    DZ50: Energy-Efficient Wireless Sensor Mote Platform for Low Data Rate Applications
    (CERIST, 2014-07-07) Ouadjaout, Abdelraouf; Lasla, Noureddine; Bagaa, Miloud; Doudou, Messaoud; Zizoua, Cherif; Kafi, Mohamed Amine; Derhab, Abdelouahid; Djenouri, Djamel; Badache, Nadjib
    A low cost and energy efficient wireless sensor mote platform for low data rate monitoring applications is presented. The new platform, named DZ50, is based on the ATmega328P micro-controller and the RFM12b transceiver, which consume very low energy in low-power mode. Considerable energy saving can be achieved by reducing the power consumption during inactive (sleep) mode, notably in low data rate applications featured by long inactive periods. Without loss of generality, spot monitoring in a Smart Parking System (SPS) and soil moisture in a Precision Irrigation System (PIS) are selected as typical representative of low data rate applications. The performance of the new platform is investigated for typical scenarios of the selected applications and compared with that of MicaZ and TelosB. Energy measurement has been carried out for different network operation states and settings, where the results reveal that the proposed platform allows to multiply the battery lifetime up to 7 times compared to MicaZ and TelosB motes in 10s sampling period scenarios.
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    A survey on Wireless Sensor Networks for Urban Traffic Monitoring: Applications and Architectures
    (CERIST, 2012) Kafi, Mohamed Amine; Badache, Nadjib; Challal, Yacine; Bouabdallah, Abdelmadjid; Djenouri, Djamel
    Vehicular traffic is increasing around the world, especially in urban areas. This increase results in a huge traffic congestion, which has dramatic consequences on economy, human health, and environment. Traditional methods used for traffic management, surveillance and control become inefficient in terms of performance, cost, maintenance, and support, with the increased traffic. Wireless sensor networking (WSN) is an emergent technology with an effective potential to overcome these difficulties, which will have a great added value to intelligent transportation systems (ITS). This technology enables a new broad range of smart city applications around urban sensing. This includes a variety of applications such as traffic safety, traffic congestion control, road state monitoring, vehicular safety warning services, and parking lots management. In this survey, a review on traffic management projects and solutions is provided. The architectural and engineering challenges are discussed, and some future trends are highlighted.
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    A study of Wireless Sensor Network Architectures and Projects for Traffic Light Monitoring
    (CERIST, 2012) Kafi, Mohamed Amine; Badache, Nadjib; Challal, Yacine; Bouabdallah, Abdelmadjid; Djenouri, Djamel
    Vehicular traffic is increasing around the world, especially in urban areas. This increase results in a huge traffic congestion, which has dramatic consequences on economy, human health, and environment. Traditional methods used for traffic management, surveillance and control become inefficient in terms of performance, cost, maintenance, and support, with the increased traffic. Wireless Sensor Networks (WSN) is an emergent technology with an effective potential to overcome these difficulties, and will have a great added value to intelligent transportation systems (ITS) overall. In this survey, we review traffic light projects and solutions. We discuss their architectural and engineering challenges, and shed some light on the future trends as well.
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    A Study of Wireless Sensor Networks for Urban Traffic Monitoring: Applications and Architectures
    (Procedia Computer Science, Elsevier, 2013-06-26) Kafi, Mohamed Amine; Challal, Yacine; Djenouri, Djamel; Doudou, Messaoud; Bouabdallah, Abdelmadjid; Badache, Nadjib
    With the constant increasing of vehicular traffic around the world, especially in urban areas, existing traffic management solutions become inefficient. This can be clearly seen in our life through persistent traffic jam and rising number of accidents. Wireless sensor networks (WSN) based intelligent transportation systems (ITS) have emerged as a cost effective technology that bear a pivotal potential to overcome these difficulties. This technology enables a new broad range of smart city applications around urban sensing including traffic safety, traffic congestion control, road state monitoring, vehicular warning services, and parking management. This manuscript gives a comprehensive review on WSN based ITS solutions. The main contribution of this paper is to classify current WSNs based ITS projects from the application perspective, with discussions on the fulfillment of the application requirements.
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    A study of Wireless Sensor Network Architectures and Projects for Traffic Light Monitoring
    (Elsevier, 2012-08-27) Kafi, Mohamed Amine; Challal, Yacine; Djenouri, Djamel; Bouabdallah, Abdelmadjid; Badache, Nadjib
    Vehicular traffic is increasing around the world, especially in urban areas. This increase results in a huge traffic congestion, which has dramatic consequences on economy, human health, and environment. Traditional methods used for traffic management, surveillance and control become inefficient in terms of performance, cost, maintenance, and support, with the increased traffic. Wireless Sensor Networks (WSN) is an emergent technology with an effective potential to overcome these difficulties, and will have a great added value to intelligent transportation systems (ITS) overall. In this survey, we review traffic light projects and solutions. We discuss their architectural and engineering challenges, and shed some light on the future trends as well.