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The challenges to deal with to design a WSN node which can be used in safety-relevant application are, to the present day, still to be completely investigated and solved. Nevertheless, a prototype implementation is presented in this paper, with an emphasis on the chosen hardware architecture and components, highlighting the limitations imposed by specific choices. Furthermore, an example application...
The advent of the Internet of Things (IoT) has proliferated the use of connected sensors to observe and control the world around us. Wireless Sensor Networks (WSN) are becoming ubiquitous tools that monitor their surroundings and also oftentimes provide actuation to affect the state of their environment. One of the key application domains for real-time monitoring and control is the freight railroad...
Many industrial application could benefit from the use of wireless sensor networks technology in safety critical context. This paper analyses the existing platforms to determine if they are suitable for a safety related application, analyses the possible modification to fulfill the requirements and propose an architecture that combines costs, performances and reliability.
Modern IoT prototyping platforms fall short in terms of energy efficiency, connectivity and software programming practices. We present the design of a new hardware and software platform that addresses these shortcomings by bringing together Mobile, Wearable, Maker and Wireless Sensor Network technologies to enable rapid prototyping with a high degree of synergy and energy efficiency. This is achieved...
MWSN is an emerging area of research and most of the work in the field of MWSN is done at the simulation level as there is hardly any cost effective hardware platform(node/mote) available for MWSN applications. To handle mobility, the MWSN node should be much more efficient than the nodes in static WSN. Moreover, a MWSN node should be capable of handling real time mobility control, path planning and...
The Agents of Things (AoT) is a novel concept that unites the physical and cyber worlds and enables things to intelligently interact and communicate with each other. The concept opens new areas for researchers to develop or improve applications for value-added services to humans. It entails analyzing the hardware and software spectrum of computing resources' specifications to implement a comprehensive...
Wireless sensors networks is an active research topic. The sensor nodes (i.e. motes) are the main building blocks of these networks. There is a permanent concern for building more and more efficient motes in order to satisfy the demanding specifications of a sensor network. This paper introduces a new mote device: aceMOTE which is based on a 32 bit microcontroller. The hardware structure of the mote...
Currently, the main components of most sensor nodes are a microcontroller and a radio. Their real-time and peak performance would be a bottleneck when executing computation-intensive tasks. Also, energy consumption may be high due to the long task-execution time. Several works [2]–[6] demonstrate that adding a coprocessor would be a solution to the problems. So far, no work have been done to analyze...
Wireless sensor networks have become shared resources providing sensing services to monitor ambient environment. The tasks performed by the sensor nodes and the network structure are becoming more and more complex so that they cannot be handled efficiently by traditional sensor nodes any more. The traditional sensor node architecture, which has software implementation running on a fixed hardware design,...
Nodes in wireless sensor networks (WSNs) typically have limited power supply and networks are often expected to be functional for extended periods. Therefore, the minimization of energy consumption and the maximization of network lifetime are key objectives in WSN. This paper proposes an overlay, energy optimized, sensor network to extend the functional lifetime of an energy-intensive sensor network...
With the rapid development of WSN technology and the improvement of people's living standard, the intelligent home environment and security requirements are also increasing. This paper proposes a smart home system design based on Wi-Fi wireless sensor network and describes respectively from the design of Wi-Fi network, the node hardware design, the software design functional processes. The design...
While low power, low cost wireless sensing devices may provide transformative capabilities to the areas of remote sensing, automation, and data collection across many sectors of industry, one of the greatest remaining obstacles to rapid adoption is the need for more capable energy supplies. By increasing sensor node lifetimes the need for intervention and maintenance can be greatly reduced and nearly...
In this work we describe our novel design of an embedded hardware communication device. The hardware is designed generically, by taking an example of a Zig Bee green radio. Our hardware completely eliminates the problem of idle listening encountered by most "mote" class hardware. Lower layers can assume node synchronization and thus transmit a minimum sized preamble. The circuit has three...
The project aims at developing a prototype boat that is capable of autonomously sailing and navigating its way through obstacles present around it. Apart from moving on a pre defined path the boat can intelligently avoid obstacles in the path through its ability of decision making using fuzzy logic. Calculations of fuzzy logic as well as deciding inputs for the path direction to be sent to the micro...
Wireless Sensor Networks (WSNs) have played an important role in diverse domains. However, programming on WSN nodes are quite hard because currently there exist no standard software and hardware platforms in WSN. Thus it's essential to build a software infrastructure that can provide a decent development environment to the users. One sound choice to achieve this objective is to deploy embedded Java...
Programmable embedded systems which are configured through a cable for operation, typically are inaccessible for reprogramming after deployment. Cheaper systems tend to be deployed in large numbers like Wireless Sensor Network (WSN) nodes forming a mesh network. In such cases, a reconfiguration or upgrade of firmware is difficult. A wireless channel for programming with broadcasting features addresses...
Energy consumption and real-time performance are two important metrics for wireless sensor networks (WSNs). To estimate these metrics, a number of simulation environments have been developed. However, these environments were made specifically for sensor nodes with fixed architectures. The recent generation of sensor nodes often has flexible architectures through the use of programmable hardware components,...
In this paper we present BRIX, a novel modular hardware prototyping platform for applications in mobile, wearable and stationary sensing, data streaming and feedback. The system consists of three different types of compact stack-able modules, which can adapt to various applications and scenarios. The core of BRIX is a base module that contains basic motion sensors, a processor and a wireless interface...
IEEE 802.15.4 is the dominant Medium Access Control protocol in wireless sensor networks. To implement this protocol on such severely resource constraint devices, several trade-offs have to be considered. This paper presents an analysis of IEEE 802.15.4 software implementations available for typical sensor node systems, such as the MSP430 from Texas Instruments. We discuss the available implementations...
This paper presents IDEA1, a validated SystemC-based simulator for WSNs. It allows the system-level performance evaluation (e.g., packet transmission and energy consumption) with elaborate models of sensor nodes. IDEA1 uses a clock-based synchronization mechanism to support simulations with cycle accurate communication and approximate time computation. Its accuracy has been validated by a testbed...
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