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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...
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.
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...
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...
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...
In order to monitoring and control street lighting, the lighting pole controller was designed and implemented based on wireless sensor network. The controllers were installed at each lighting pole. The hardware of controller integrates a AVR microcontroller, a radio modem, double lamp control units and current detecting units. The lamp control units control primary and secondary lamp on or off according...
Wireless Sensor Networks consist of resource-constrained (energy, memory and processing) sensor nodes that are deployed at different locations, in order to monitor physical or environmental conditions. Several limitations exist nowadays, at simulation and at programming level, especially for heterogeneous Wireless Sensor Networks (composed of different hardware devices). Indeed, to optimize a self-organized...
This paper presents a complete SystemC-based Wireless Sensor Network model. It implements the entire IEEE 802.15.4 standard, and permits to simulate scenarios at high level, taking hardware and software low level parameters into account, also enabling design space exploration for system level designers.
In most modern industries there is a growing need for high efficiency and availability in motor driver systems. Moreover, motor operation monitoring is necessary to the implementation of proper and cost-effective motor maintenance, repair and replacing strategies. In this paper, a wireless sensor network for in-field operation monitoring of three-phase squirrel-cage induction motors is proposed. The...
Location systems based on Wireless Sensor Networks (WSN) and Receiver Signal Strength (RSS) mainly depend on how the measurements are obtained. Usually, there are some mobile nodes to be located that periodically send beacon frames, which are captured by an anchor sensor network. After combining this information, the system estimates node positions. However, it is well-known that these systems suffer...
Most of the extant wireless medicare system have been used Bluetooth or WiFi standard based on IEEE 802.11 to implement wireless communication. However, those could not work as a network and transmit data to specific terminals. Wireless Sensor Networks (WSNs) based on IEEE 802.15.4 present a possibility to implement a networked medicare system. Most of those networking algorithms have been discussed...
In recent years, much research has been done on wireless sensor networks and sensor data fusion, however there has been limited work regarding implementation of real systems that are capable of providing a highly connected sensor network for data logging and data fusion applications. This paper describes the design and implementation of a wireless, portable, and reconfigurable sensor network framework...
A wireless sensor network is characterized as a massively distributed and deeply embedded system with small medium and large footprint embedded devices. The sensor devices and wireless sensor nodes are often severely resource constrained. Typical they are equipped with 8-bit MCU, 100-512KB code memory and 4-64KB of RAM. Background / foreground approach, finite state machine based software design and...
We develop several hardware and software simulation blocks for the TinyOS-2 (TOSSIM-T2) simulator. The choice of simulated hardware platform is the popular MICA2 mote. While the hardware simulation elements comprise of radio and external flash memory, the software blocks include an environment noise model, packet delivery model and an energy estimator block for the complete system. The hardware radio...
Wireless sensor networks are widely used in many applications like security, healthcare and defense. They have lot of design constraints in terms of power consumption, processing power etc. They have lot of applications in environmental engineering also. This paper discusses in detail about hardware, firmware and application interface design for a wireless node and base station for one such environmental...
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