The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
With the development of sensor, wireless mobile communication, embedded system and cloud computing, the technologies of Internet of Things have been widely used in logistics, Smart Meter, public security, intelligent building and so on. Because of its huge market prospects, Internet of Things has been paid close attention by several governments all over the world, which is regarded as the third wave...
Wireless sensor network (WSN, Wireless Sensor Network) is a kind of autonomous network with sensor nodes. It is different from traditional RFID system that the WSN is through the distribution of sensor nodes in different locations to monitor environmental conditions. The collected data from sensor nodes were sent back to the base station for further analysis and processing to compensate the shortage...
Wireless Sensor Networks (WSNs) are envisioned to become an integral part of the Future Internet. Together with countless other embedded appliances, such resource-constraint devices will form an Internet of Things (IoT) where all kinds of devices extend the Internet to the physical world. In this vision, the seamless and flexible integration of IoT devices ranging from simple sensor nodes to large...
A wireless bipolar body electrode has been developed, taking into account the limitations posed by signal-to-noise ratio, dimensions, wireless technology, limited power consumption and requirements for post-processing. A small set of wireless bipolar electrodes, placed at optimal locations on the body surface, are connected into a network that is able to acquire real-time data. Measured signals, sampled...
Wireless sensor networks (WSNs) sense and aggregate ambient information (e.g. space, environment or physiological data). Ambient information can enhance enduser experience and is made available to end-user applications (which may reside in another network) via gateways. Gateways are usually centralized and fixed. Mobile ad hoc networks (MANETs) are networks that can be deployed “on the fly”. They...
Wireless sensor networks (WSNs) have been widely used in a wide variety of applications. Deploying WSNs in unattended environments can cause various security threats. In these scenarios, provisioning user authentication is a critical issue. In this paper, we propose improved robust user authentication scheme for WSNs, which is a variation of strong-password based solution. We have analyzed security...
The Wireless Sensor Network (WSN) is one of the core technologies to form the future networks. A WSN is typically composed of numerous tiny energy-constrained sensor nodes with limited information processing and data storage capabilities, thus, the energy-efficient strategy is the key issue in designing protocols for WSN. All IPv6-based addressing is suitable for the seamless integration between WSN...
In recent years many efforts have been spent on sensor networks, with a particular attention to routing, energy management, hierarchical data processing and aggregation aspects. What not generally considered is that the wireless unit can be intended as the data management node of a wired sub-network with sensorial units connected through a fieldbus. The outcome is a hybrid wireless-wired topology...
The wireless sensor networks (WSN) with their constant evolution, need new management methods to be monitored efficiently by taking into account their constraints such as energy consumption, reliability and remote monitoring. Note that WSN has diverse application domains: smart home, smart care, environmental data collection etc. In order to manage a large scale WSN, some wireless sensor network management...
Energy efficiency is a key problem of wireless sensor networks. Though we already have many self-organization protocols which can build energy-saving structures, the energy cost of maintenance also must be concerned. We found that organized network structure has great impact on the energy cost in the maintenance stage and the overall energy efficiency. In this paper, we classify the self-organization...
This paper discusses an embedded access platform, which takes S3C2410 as the center core and is built upon the Linux operating system. Based on the character and advantage of ZigBee and GPRS, this article advances the solution scheme of the wireless sensor network gateway. Mainly analyzes the software design of the gateway, including the way to realize the connection of ZigBee protocol and GPRS network,...
Recent advancements in wireless communication and microchip techniques have accelerated the development of wireless sensor networks (WSNs). Key management in WSNs is a critical and challenging problem because of the inner characteristics of sensor networks: deployment in hostile environments, limited resource and ad hoc nature. In this paper we investigate the constraints and special requirements...
Wireless sensor network applications (WSNs) are starting to enter into our daily life. Discovering sensor nodes and the services hosted by them is imperative to any large scale and flexible sensor network application. The heterogeneity and dynamics of wireless sensor networks and their applications are challenges for service discovery protocols. In this demonstration, we present a light-weight service...
More and more of wireless sensor networks (WSN) are proposed in the past years. However, due to the differences of protocols between WSN and Internet, data exchange with these heterogeneous networks is a serious issue. In this paper, we propose an architecture, named IAPA (integrated wireless access point architecture) for WSN, that amended WLAN AP to convergence the heterogeneous networks. It is...
The gateway realizes the fusion of wireless sensor network and external network. Some low performance gateways cannot meet the requirement of surge data collection. Consequently, a gateway that based on PXA270, using embedded Linux is designed to meet the requirement. To protect the data that transmitted by Ethernet through the gateway, a TCP/IP strategy is constituted, which can reduce the probability...
This paper introduces a new dynamic addressing technique for prolonging the operational duration of duty cycled wake-up radios found in wireless sensor networks. A wireless sensor network (WSN) consists of a field of spatially distributed wireless nodes which operate on minimal battery power for extremely long times. A WSN typically uses a multi-hop architecture where messages containing sensed data...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.