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With technologies developed in the Internet of Things, embedded devices can be built into every fabric of urban environments and connected to each other; and data continuously produced by these devices can be processed, integrated at different levels, and made available in standard formats through open services. The data, obviously f a form of ‘big data', is now seen as the most valuable asset in...
The ability to detect which wearables and smartphones are on the same body has the potential to support a wealth of applications, including user authentication, automatic data synchronization, and personalized profile loading. This paper brings this feature to commercial off-the-shelf (COTS) wearables and smartphones, by creating a virtual “on-body detection sensor” based on devices' inherent wireless...
Based on the analysis of 3D maximum likelihood estimation positioning algorithm, RSSI ranging error directly affects the overall positioning accuracy of the algorithm, so weighted maximum likelihood estimation positioning algorithm is put forward. It is inversely proportional to the square of distance and positioning accuracy of the algorithm through theoretical derivation, thus diagonal weight matrix...
The surveillance for data collection in wireless sensor networks (WSNs) setting is recognized as an important application of WSNs. Given an area of interest and a number of wireless sensors, typical problems to be addressed are covering the whole area while prolonging the network lifetime. It is explicitly observed that most existing studies focus on limited case in which the interested area is static...
In this paper, we introduce a new strategy of using VANET nodes with visual sensors and wireless transceivers to build an instant camera barrier for a given mission period. Given a set of properly equipped VANET nodes whose drivers voluntarily join the protocol by exposing their future travel plans and use onboard equipment to transmit realtime video to the authority, we aim to maintain the barrier...
This paper introduces a robotic system for electric energy meter detection, which is composed of AGV, RGV, 6-DOF manipulator and vision positioning. AGV is used to transport the electric energy meter from warehouse to transfer station for detection and send them back after detection. The manipulator is installed on a RGV and used to pick the electric energy meter to the detection platform with the...
Due to the deployment limitations of global positioning system (GPS), a pseudo geometric broadcast approach is investigated in resource constrained wireless sensor networks (WSNs). Without relying on the GPS support, a set of nodes closely located in a strategic position is judiciously searched and identified as a forwarding node. In this paper, we first propose both enhanced ad hoc broadcast protocol...
Existing work on localization in wireless rechargeable sensor networks (WRSNs) assumes that the charger is equipped with an omnidirectional antenna. We notice that the current available COTS (Commercial off-the-shelf) energy harvesting kit such as the one manufactured by Powercast includes wireless charger with directional antenna. We consider the localization problem in a wireless rechargeable sensor...
Due to the unavoidable battery replacement or replenishment, diverse energy harvesting techniques have been integrated with Wireless Sensor Networks (WSNs) to overcome limited battery power and extend the network lifetime. However, variable transmission power levels based on non-uniform energy harvesting rates can incur asymmetric links. In this paper, we propose light-weight forwarding protocols...
Abstracting sensor capabilities as services is a promising approach to support interoperability and scalability in Internet of Things based applications; however, ranking and selecting these dynamic and large number of real-world services in real-time is a challenging problem, which involves decision making in the presence of multiple criteria. This paper demonstrates an application of the Primitive...
This paper aims to detect human body based on Wireless Sensor Network (WSN). The experimental measurements are conducted in laboratory. A high quality network is obtained and then the Received Signal Strength Indicator (RSSI) can be calculated from the receive sensor module. The value of RSSI is used to do experiment and we get the conclusion that RSSI can be used for indoor person detection.
Verifying data integrity in a ubiquitous environment is challenging due to its features such as self-organised, data-centric, and dynamic topology control. In this paper, a method for protecting data integrity is present by inserting and extracting digital watermarking information into and from most significant bits (MSBs) of original data. The method has been implemented in a real ubiquitous environment,...
This paper presented a distributed fault-tolerant event boundary detection scheme for wireless sensor networks. In this paper, the node coordinate and its reading were mapped on a 3D mesh surface, By comparing the node normal vector got by Normal Vector Based Fault-Tolerant Event Boundary Detection (NVBD) with a predefined threshold, the event boundary nodes are found. This approach was composed of...
In this paper we propose a new distributed scheme to optimize data transmission quality with application level energy neutrality consideration in harvesting wireless sensor networks. The contribution of this proposed scheme is that, the high level data acquisition precision is maximized by properly selecting distributed source coding ancestors. The quality and error robustness tradeoff is adjusted...
Wireless Sensor Networks (WSNs) can have high demands for real-time data transmission and processing, but this is often constrained by limited resources. Cloud Computing can act as the backend for WSNs to provide processing and storage on demand. This paper proposes a generic architecture to support the integration of sensors with the Cloud. It uses a lightweight component model and dynamic proxy-based...
This paper describes an enterprise data warehouse management technology in practical application, proposes the establishment from the data warehouse. With the problem emerging in aspects of real-time and regulatory warehouse management, it applies technology combining RFID and the WSN technology to the storage management. It achieves intelligent storage environment which meet the requirement of materials...
According to wireless sensor network (WSN) nodes have unstable performance and are easy to lose effectiveness, a WSN routing failure node verification method, NEVM (Node-Encoding Verification Method), based on node encoding is proposed. The method encodes failure route node with binary encoding and generates more verification path, then sends verification packages to each path and generates a sequence...
This paper considers the problem of computing the optimal trajectories of multiple mobile elements (e.g. robots, vehicles, etc.) to minimize data collection latency in wireless sensor networks (WSNs). By relying on slightly different assumption, we define two interesting problems, the k-traveling salesperson problem with neighborhood (k-TSPN) and the k-rooted path cover problem with neighborhood (k-PCPN)...
There is a strong need to explore green and harvestable energy in computer communications. However, adapting wireless network performance to harvested energy has largely been ignored in literature. In this paper, we propose a new resource allocation scheme to improve data delivery quality in energy harvesting enabled wireless networks. In the proposed approach, packet Automatic Repeat reQuest (ARQ)...
This paper introduced the characteristics and applications of wireless sensor networks briefly. With the rapid development of wireless sensor network(WSN) technology, the characteristic of energy limit in WSN has become the utmost concern among people nowadays. According to how to use the limited energy effectively, this paper discuss some typical energy-saving protocols in the MAC layer and in the...
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