Alex Mouapi

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This paper proposes an autonomous power supply to feed the nodes of a Wireless Sensor Network (WSN) used in vehicles. The vibration levels detected in a moving vehicle in an urban or semi urban area are used as the primary form of autonomous energy. Measurements show that a maximum power density of -16.9 dB/Hz is observed around 15 Hz for cruising speed up(More)
Wireless Sensor Networks (WSNs) technology is considered an excellent compromise for supporting monitoring applications on old trains operated by railway systems around the world. Although WSNs are optimized for energy management with regards to sensor nodes and communication protocols, their lifetimes remain limited by battery capacity. Deployment of new(More)
In this paper, a miniature RECtifying antENNA (rectenna) operating in the GSM band is designed and realized. The RF micro-generator consists of a simple rectifier circuit combined with a dipole antenna. The miniaturization of the circuit lies in avoiding the adaptation input filter and in optimizing the transmission lines by the gradient method search. The(More)
In this paper, a method of designing an autonomous Wireless Sensor Node (WSN) powered by RF energy Harvesting is proposed. The autonomous sensor node is composed of two components, the WSN and the RF energy harvesting system. The RF harvester is based on a rectenna that consists of an antenna associated with a rectifier circuit. The used rectifier circuit(More)
Wireless sensor networks (WSNs) offer an attractive solution to many environmental, security and process monitoring. However, their lifetime remains very limited by battery capacity. Through the use of piezoelectric energy harvesting techniques, ambient vibration can be captured and converted into usable electricity to create selfpowering WSN which is not(More)
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