Energy harvesting can be leveraged by Wireless Sensor Network (WSN) to address its energy-scarcity problem, giving rise to Energy Harvesting Wireless Sensor Network (EHWSN). Residual energy balancing of sensors is the key issue to avoid sensors’ failure and promise the network function of EHWSN. In this paper, by exploiting the sensors around the source and sink as relays, we propose a distribu...

Querying a sensor network requires the acquisition from sensors of measurements describing the state of the monitored environment. To transmit the required information, sensors consume energy. Since sensors are battery-powered, reduced energy consumption allows the extension of a sensor’s lifetime. Hence, an important issue in this context is the reduction of energy consumption during data coll...

We address the problem of a swarm of autonomous mobile robotic sensors generating geometric shapes to build wireless ad hoc surveillance sensor networks. Robot swarms with limited observation are required to form different shapes under different task conditions. To do this, we propose decentralized coordination enabling a robot swarm dispersed across an area to form a desired shape. Our approac...

A sensor network is composed of a given number of communicating sensors, which aims to collect data from their envirenement. When interesting events are detected, information is routed from one node to another and eventually gathered in gateway nodes or base stations. Recently, sensors have become a promising operational technology for underwater environment. For example, they are now able to c...

recently, hardware sensors are widely used in monitoring and measurement of water quality parameters. constraint of the instrument to measure some water quality parameters such as the 5-day biochemical oxygen demand (bod5), which are time consuming, causes efforts are diverted to the use of software sensors for online prediction of bod5. the main goal of this research is developing an appropria...

Limit energy is a severe bottleneck of wireless sensor networks (WSNs), and limits network lifetime of WSNs. To extend network lifetime, buffer zone has been proposed. Sensors send their data packets to buffer zone. The sensors in buffer zone buffer the data packets. And then the sink visits the buffer zone to collect the data packets. This leads to that the loads of the sensors in buffer zone ...

Sensor networks are gaining importance as they have vast potential for diverse application areas like monitoring, localizing and tracking of environmental phenomenon. The sensors are constrained by extremely scarce resources, unreliable communication link and faulty nodes. There is a need to address these harsh operating conditions. Real time sensitive applications which require fault free obse...

Wireless sensor networks (WSNs) play an important role in the future of Internet of Things IoT systems, in which an entire physical infrastructure will be coupled with communication and information technologies. Smart grids, smart homes, and intelligent transportation systems are examples of infrastructure that will be connected with sensors for intelligent monitoring and management. Thus, sens...

Wireless Sensor Networks (WSNs) offer inherent packet redundancy since each point within the network area is covered by more than one sensor node. This phenomenon, which is known as sensors co-coverage, is used in this paper to detect unauthenticated events. Unauthenticated event broadcasting in a WSN imposes network congestion, worsens the packet loss rate, and increases the network energy con...

In this paper, we study WSN design, as a multi-objective optimization problem using GA technique. We study the effects of GA parameters including population size, selection and crossover method and mutation probability on the design. Choosing suitable parameters is a trade-off between different network criteria and characteristics. Type of deployment, effect of network size, radio communication...