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By analyzing the oilfield wireless monitoring system, the paper puts forward a sensor networks system framework based on ZigBee wireless communication protocols. Hardware of the coordinator and router nodes is designed in this system, achieving self-networking function and reliable data transmission. Finally, low power consumption of the router and terminal device is studied.
Enhanced agricultural methods can help to improve low productivity agriculture sectors of developing countries. In Sri Lanka, where the country is experiencing a rapid pace of development, the agriculture sector is beginning to appreciate the benefits that can be gained by merging agriculture with engineering. The use of electronic, communication, and information technologies has proven to result...
In this paper, we present results from our measurement and analysis of energy use and user behavior in an academic computer lab. We use wireless power sensors to collect power readings from 22 computers in the lab. We use software monitor to log various user activities in the computer. We collected a total of 59.6 million power readings and 220.3 million user activity logs over one month. We analyze...
Spatially distributed sensors, which communicate wirelessly form a wireless sensor network (WSN). This network monitors physical or environmental conditions. A central gateway, called high energy communication node, collects data from all sensors and sends them to the central computer where they are processed. We need to minimize the number of sensors and energy consumption of the network, when the...
The open access and limited resources of WSNs make the network vulnerable to all kinds of attacks, and for this reason it requires effective intrusion detection technology to detect and identify various security threat. This paper firstly gives a brief introduction of the present intrusion detection system, and then discusses the various threats faced of WSNs, at last this paper points out that the...
Network lifetime and coverage are viewed as the dominating considerations in designing the structure layout for Wireless Sensor Networks (WSN). In a WSN, the sensor nodes and its central node are located far apart to ensure good coverage over the concerning area. However, communication over long distance between the nodes consumes excessive energy from the battery powered sensors and reduces the lifetime...
Wireless Sensor Networks (WSNs) can be used in a broad range of applications from complex military operations to simple domestic environments. This makes security a vital characteristic in WSNs. There have been numerous studies in the field of security in sensor networks, being Intrusion Detection System (IDS) among the most used tools in this area. This study proposes a new IDS design based on reputation...
Wireless Sensor Networks (WSN) may be a very useful technology for monitoring systems in hostile environments. Few works have treated the use of this technology in the particular metallic shipboard environment. This paper reports on the deployment of a WSN on board a ferry-type boat during realistic conditions. The network was tested during sailings and stopovers for several days. The results of our...
Wireless sensor networks (WSN) are highly distributed self-organized systems, the associated research being growing at a tremendous pace, and targeting various application domains. The successful implementation of such networks is dependent on the enabling technologies (such as digital electronics and wireless communications), as well as the provisioning of Quality of Service (QoS) and various security...
Residential building explosion caused by gas leak takes place every year. The explosion leads to a lot of injures even dead since it usually results in the partial collapse of the building. An automated approach to detecting the gas leak to keep the residents safe is thus of utmost importance. In this paper, we present the design of Gas Mon, a wireless sensor network system for gas leak monitoring...
Because air pollutants seriously affect human health, the government in Taiwan attempts to reduce the pollutants by passing many environmental laws and establishing various large-scale and expensive air quality monitoring systems. These monitoring systems are capable of large-scale monitoring, but they cannot immediately detect small-scale air quality changes. Wireless sensor networks are novel monitoring...
Heterogeneous wireless sensor networks use more than one type of nodes to improve network lifetime and scalability. In this paper, we focus on the design of a random network consisting of two types of nodes: ordinary ones and powerful ones. Ordinary nodes transmit their sensed information through powerful nodes to the data sink while powerful nodes are able to directly communicate to the sink. First,...
Distributed structural health monitoring (SHM) using wireless sensor nodes (WSN) requires frugal spending of the limited energy budget. We propose a reconfigurable heterogeneous architecture, combining a low-power micro-controller (MCU) with a Field-Programmable Gate Array (FPGA), as a means for energy-efficient in-sensor processing. Details covered include a generic communication interface between...
This demonstration shows the usage of a heterogeneous sensor node (HaLOEWEn) for structural health monitoring applications. It employs the Random Decrement technique to aggregate compressed structural health data from a long-term stream of raw sensor data.
Military Applications of Wireless Sensor Network in domains of maximizing security and gaining maximum benefits from attacking the opponent is a challenging and prominent area of research now-a-days. A commander's goal in a battle field is not limited by securing his troops and the country but also to deliver proper commands to assault the enemies using the minimum number of resources. In this paper...
In this paper, a real-time detection system of runaway trains based on the wireless sensor network is proposed. The Giant magneto resistive (GMR) sensor is used to detect the train wheels. According to the difference of wheels types, locomotives and wagons can be distinguished. Wheel sensors are connected to the sensor node which could send detected signal to sink nodes by the radio. The sink node...
With the rapid development of the urbanization process and the expansion of a city's size and population as well, the increasing consumption and electricity cost in lighting deeply intensifies the already uptight energy supply in China. A street lighting system is an indispensable part of an urban infrastructure, and as a part of municipal public facilities, it is closely related to people's daily...
Due to energy limit of sensors, lifetime maximization of wireless sensor network is one of the key problems protocol design. Low Energy Adaptive Clustering Hierarchy (LEACH) is a well known routing protocol in WSN, but its performance decreases sharply with increase of the network scale. To solve this problem, we introduce an improved LEACH routing protocol to balance energy consumption among the...
A water pollution monitoring system based on zigbee wireless sensor network is proposed aiming at current severe situation of global water pollution. The network node hardware circuit of this proposal specifically lays out the hardware and software design of the network node, with JN5130 CMOS chip producing by Jennic company as core. Low-cost, low-consumption and easy-expansion, the system could inspect...
A wireless ECG monitoring system suitable for the usage of athlete training and evaluation is proposed, which contains multiple client-side wireless ECG acquisition sub-systems based on MSP430, a central monitoring sub-system based on ARM and ECG analysis software on PC. The whole monitoring system constitutes a wireless sensor network with nRF905 wireless transceivers. The design of client-side system...
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