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Cork Institute of Technology (CIT) researchers in collaboration with Tyndall National Institute, both based in Cork, a city in the southern coast of Ireland, have developed a container management and monitoring system using Wireless Sensor Networks (WSNs), with a support of Cork Port and local industry. The system is designed to seamlessly integrate with existing container management schemes (and...
Energy and run time are mayor concerns in wireless sensor networks. Reliable information about the energy consumption is needed to be able to build a network and tune its application. In this paper we take a look on the energy consumption of the Texas Instruments eZ430-Chronos, an MSP430 based wireless sensor node, and compare it to the manufacturers datasheet. The measurements show how reliable these...
The main problem in Wireless Communication Networks in the field nodes is that the battery resources are constrained. In multi-hop network, if one of the nodes is switched off due to low battery power, the network is disconnected and the field information could be lost. While energy efficiency of communication protocols tries to ensure extended network lifetime, but battery drainage problem still...
In this paper, we proposed an energy-efficient clustering routing algorithm based on directional antennas (EECDA) for wireless sensor networks. In a large scene, a cluster-head is responsible for data acquisition within its cluster and data forwarding among different clusters. As the sensor nodes are too simple and the energy providing is limited, the energy will be quickly run out with the increase...
This paper proposes a resolution of using wireless sensor networks to improve the productivity of agriculture. The application of the sensor networks is introduced briefly at first, then the design and implementation of the hardware and software of the sensor nodes and sink node is discussed in detail. The experimental results show that the system can work effectively in monitoring the ecology environment...
A wireless wearable physiological parameter monitoring system for home health care is studied in this paper. Based on the wireless wearable physiological parameter monitoring system of human research, we introduced realization of the ZigBee in wearable physiological monitoring system parameter acquisition module.
Recently, the Global Positioning System (GPS) has been adapted for use in many applications. However, the system suffers from blind spots where its electronic waves are unable at present, to penetrate such as the inside of buildings, underground garages, and tunnels. Consequently, further research to solve this problem is of some importance. This article suggests that, position-detection technology...
Maximizing the battery life time of mobile devices and sensor nodes increasingly becomes a challenge, and receiver power consumption tends to become more problematic than delivering adequate transmit power. We address the challenge of achieving the highest possible throughput per Watt of receiver circuit power. Our results show that optimum and adaptive tuning of the front-end parameters of the receiver...
In Wireless Sensor Networks (WSN) the sensor nodes are usually battery-powered, for which the energy consumption must be minimized in order to extend their working time. The energy consumption of RF front-ends is dominant in the whole communication system, so we must consider how to minimize it in the design. In this paper, we describe four kinds of RF front-end architectures, energy model of each...
We present the design of sensor nodes for human posture tracking purposes. Each sensor node is equipped with a microcontroller, an RF transceiver chip and two sensors: a 3D accelerometer and a 3D magnetometer. Based on the signals of these sensors, the orientation of a sensor node can be estimated. Combining several of these nodes into a sensor network, allows for complete human posture tracking,...
This paper presents the IPv6 wireless sensor network platform system TaraxNode. It is designed and implemented with independent intellectual property rights. For effectively monitoring, we developed TaraxOS, which includes a cluster-based self-organized multi-hop routing protocol. It is a multi-task, high-powered, low energy-consumed operating system for sensor nodes. TaraxNode containing heterogeneous...
This paper presents an energy efficient ASIC design with the capability of real-time work-on-demand, targeting on the applications of wireless body sensor network (WBSN), especially on those for medical and heath purposes. Application specific requirements have been reviewed. A novel type of sensor node architecture is proposed with a hybrid of active/passive transceivers. The passive RF receiver...
An automatic monitoring system for fresh food quality is being developed. The system consists of several sensor nodes that measure the temperature of the product samples and the surrounding environment and transmit the result via wireless in 2.4 GHz frequency to the central station. It is developed in order to have fully automatic monitoring system in which the operator will be able to remotely monitor...
A remote real time AMR (automatic meter reading) system based on wireless sensor networks is presented in this paper. The useful remote AMR sensors were analyzed and efficient wireless network was suggested. The remote measurement system for water supply is taken as a typical example in experiments. The structure of system employs distributed structure based on wireless sensor networks, which consists...
A study on robustness of location determination techniques using wireless sensor network (WSN) is presented in this manuscript. The location estimation technique used by the wireless sensor network is based on location fingerprinting technique. Theoretically, the robustness of the location estimation depends on the availability of the number of sensor nodes in the system. The degradation of location...
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