Research on Data Privacy Protection Algorithm with Homomorphism Mechanism Based on Redundant Slice Technology in Wireless Sensor Networks

Wireless transmission method in wireless sensor networks has put forward higher requirements for private protection technology. According to the packet loss problem of private protection algorithm based on slice technology, this paper proposes the data private protection algorithm with redundancy mechanism, which ensures privacy by privacy homomorphism mechanism and guarantees redundancy by carrying hidden data. Moreover,it selects the routing tree generated by CTP(Collection Tree Protocol) as routing path for data transmission. By dividing at the source node, it adds the hidden information and also the privacy homomorphism. At the same time,the information feedback tree is established between the destination node and the source node. In addition, the destination node immediately sends the packet loss information and the encryption key via the information feedback tree to the source node. As a result,it improves the reliability and privacy of data transmission and ensures the data redundancy.

The Comparative Research on the Location Technology of Wireless Sensor Networks

Wireless Sensor Network (WSN) which is composed of lots of self-organizational intelligence nodes has become new technology of information acquisition and processing. Location technology is one of the key technologies in WSN. There are many kinds of location algorithms currently and the research to performance evaluation and applicability analysis of algorithms has fundamental significance. For this reason, the paper firstly elaborated the performance evaluation indexes of location algorithms, and analyzed the location prin-ciples, characteristics and current fundamental problems to typical and some new location algorithms, and then analyzed and compared some typical location algorithms according to the location accuracy, node den-sity and hardware requirement, obtaining the sphere of application of these algorithms and pointing out the problems which need to be solved in WSN currently.

Investigation of Architecture and Essential Technologies of Wireless Sensor Network

This paper introduces the architecture of wireless sensor networks, presents a cross-layer network management and control mechanism. The key technologies, such as Medium Access Control (MAC) and wireless routing protocols are discussed and compared. A proposal of applying the simple IEEE 802 MAC protocol into the wireless sensor network is introduced. In addition, in order to improve the system capacity, a multi-channel strategy for the sensor nodes is presented for decreasing the blocking probability and suppressing the accessing time delay. It is concluded that there are still a number of problems to be solved, including decreasing power consumption, improving capacity and avoiding access collision, to promote the successful commercial application of wireless sensor network.

Quality of Service (QoS) Provisions in Wireless Sensor Networks and Related Challenges

Wireless sensor networks (WSNs) are required to provide different levels of Quality of Services (QoS) based on the type of applications. Providing QoS support in wireless sensor networks is an emerging area of research. Due to resource constraints like processing power, memory, bandwidth and power sources in sensor networks, QoS support in WSNs is a challenging task. In this paper, we discuss the QoS requirements in WSNs and present a survey of some of the QoS aware routing techniques in WSNs. We also explore the middleware approaches for QoS support in WSNs and finally, highlight some open issues and future direction of research for providing QoS in WSNs.

In-Motes EYE: A Real Time Application for Automobiles in Wireless Sensor Networks

Wireless sensor networks have been identified as one of the key technologies for the 21st century. In order to overcome their limitations such as fault tolerance and conservation of energy, we propose a middleware solution, In-Motes. In-Motes stands as a fault tolerant platform for deploying and monitoring applications in real time offers a number of possibilities for the end user giving him in parallel the freedom to experiment with various parameters, in an effort the deployed applications to run in an energy efficient manner inside the network. The proposed scheme is evaluated through the In-Motes EYE application, aiming to test its merits under real time conditions. In-Motes EYE application which is an agent based real time In-Motes application developed for sensing acceleration variations in an environment. The application was tested in a prototype area, road alike, for a period of four months.

An Auto-Configuration of 4M Group Management Using Wireless Sensor Networks

The first tier of automotive manufacturers has faced to pressures about move, modify, updating tasks for manufacturing resources in production processes from demand response of production order sequence for motor company and process innovation purpose for productivity. For meets this requirements, it has to require absolutely lead time to re-wiring of physical interface for production equipment, needs for change existing program and test over again. For prepare this constraints, it needs studying an auto-configuration functions that build for both visibility and flexibility based on the 4M (Man, Machine, Material, Method) group management which is supports from WSN (Wireless Sensor Network) of the open embedded device called M2M (Machine to Machine) and major functions of middleware including point manager for real-time device communication, real-time data management, Standard API (Application Program Interface) and application template management. To be application system to RMS (Reconfigurable Manufacturing System) for rapidly response from various orders and model from motor company that is beginning to establishing the mapping of manufacturing resources of 4M using WSN.

Design and Research on the Chinese Medicine Health Management System Based on the Wireless Sensor Network

In view of the rapid growth of China's aging population and the rising demand for the medical services,it is more necessary to build a health management system of the traditional Chinese medicine based on the wireless sensor networks.This design combines the ZigBee technology,the city grid management and the virtual reality technology,to establish a real-time,accurate and fine health monitoring system,so as to comprehensively improve the efficiency,quality and level of people's health management.

An Auto-configuration 4M Group Management using Wireless Sensor Networks for Reconfigurable Manufacturing System

The first tier of automotive manufacturers has faced to pressures about move,modify,updating tasks for manufacturing resources in production processes from demand response of production order sequence for motor company and process innovation purpose for productivity. For meets this requirements,it has to require absolutely lead time to re-wiring of physical interface for production equipment,needs for change existing program and test over again.For prepare this constraints,it needs studying an auto-configuration functions that build for both visibility and flexibility based on the 4M(Man,Machine,Material, Method)group management which is supports from WSN (Wireless Sensor Network)of the open embedded device called M2M(Machine to Machine)and major functions of middleware including point manager for real-time device communication,real-time data management,Standard API (Application Program Interface)and application template management.To be application system to RMS (Reconfigurable Manufacturing System)for rapidly response from various orders and model from motor company that is beginning to establishing the mapping of manufacturing resources of 4M using WSN.

Middleware for Wireless Sensor Networks:A Survey

Wireless Sensor Networks （WSNs） have found more and more applications in a variety of pervasive computing environments. However, how to support the development, maintenance, deployment and execution of applications over WSNs remains to be a nontrivial and challenging task, mainly because of the gap between the high level requirements from pervasive computing applications and the underlying operation of WSNs. Middleware for WSN can help bridge the gap and remove impediments. In recent years, research has been carried out on WSN middleware from different aspects and for different purposes. In this paper, we provide a comprehensive review of the existing work on WSN middleware, seeking for a better understanding of the current issues and future directions in this field. We propose a reference framework to analyze the functionalities of WSN middleware in terms of the system abstractions and the services provided. We review the approaches and techniques for implementing the services. On the basis of the analysis and by using a feature tree, we provide taxonomy of the features of WSN middleware and their relationships, and use the taxonomy to classify and evaluate existing work. We also discuss open problems in this important area of research.

The ZigBee Based Wireless Sensor and Actor Network in Intelligent Space Oriented to Home Service Robot

In the study of intelligent space oriented to home service robot, an important technology is how to construct an communication network which has the characters of high reliability and easy building. In this paper, based on the characteristics of ZigBee protocol, ZigBee technology is used to construct a wireless sensor and actor network. Several intelligent services based on ZigBee wireless sensor and actor network are shown to certify the reliability of this communication network. ZigBee wireless sensor and actor network builds an information bridge for the components in the intelligent space, the spatially distributed devices are connected together seamlessly. With this network, robot can share the mass information in the intelligent space and improve its performance with 'light-packs', devices in intelligent space, such as lamp, curtain can be controlled autonomously.

Wireless Sensor Network Management and Functionality: An Overview

Sensor networks are dense wireless networks of small, low-cost sensors, which collect and disseminate en-vironmental data. Wireless sensor networks facilitate monitoring and controlling of physical environments from remote locations with better accuracy. They have applications in a variety of fields such as environ-mental monitoring;military purposes and gathering sensing information in inhospitable locations. Sensor nodes have various energy and computational constraints because of their inexpensive nature and adhoc method of deployment. Considerable research has been focused at overcoming these deficiencies through more energy efficient routing, localization algorithms and system design. Our survey presents the funda-mentals of wireless sensor network, thus providing the necessary background required for understanding the organization, functionality and limitations of those networks. The middleware solution is also investigated through a critical presentation and analysis of some of the most well established approaches.

基于无线传感器网络技术的智能物联施工安全防护系统设计

为解决传统公路施工现场安全防护系统不能实现远程监控的问题,提出了一种基于无线传感器网络技术的智能物联施工安全防护系统,阐述了该安全防护系统的总体结构及工作原理。该系统以安全帽为智能穿戴载体,采用基于ZigBee技术的无线自组网方式,实现了施工现场的实时环境数据采集,通过无线传感器网络技术将环境数据采集至物联网平台进行分析和处理,完成对施工现场的安全监控。实验结果表明,该系统可实现对施工现场安全情况的实时监控,其传输数据稳定可靠,且具备较强的抗干扰能力。

基于改进卡尔曼算法的室内温度数据融合

针对传统建筑物内部空间结构复杂,布线成本高,数据采集精度不高等问题,采用LoRa无线通信技术构建传感器网络,主要用于监测室内温度参数的变化;对于传统的卡尔曼数据融合结果存在较小波动的现象,引入了孤立森林算法,提出了基于改进的卡尔曼滤波算法的室内温度数据融合算法;通过在采集到的数据集中随机添加扰动样本和畸变数据,对3种算法产生的误差进行比较,改进的卡尔曼数据融合算法在有扰动样本的情况下,误差范围控制在-0.12~0.1之间,在带有畸变数据时,误差范围在-0.03至0.14之间,均远小于传统的卡尔曼数据融合算法和平均值算法;实验仿真的结果表明,改进的算法提高了室内温度数据采集的鲁棒性和准确性。

WSN与WCDMA网络互联技术的研究

本文以中兴通讯公司的WCDMA移动通信系统和奥尔斯公司的WSN系统为研究背景,设计并实现了以B/S架构的网络互联方案。本文设计了基于中间件技术的网络互联方案,并通过WEB中间件实现其功能。

基于无线传感网络与UWB技术的煤矿井下采掘人员定位方法

由于传统方法在煤矿井下人员定位中应用效果不佳,不仅定位结果相对误差比较大,而且定位失败人员数量较多,无法达到预期的定位效果,为此提出基于无线传感网络与UWB技术的煤矿井下采掘人员定位方法。搭建无线传感网络场景,利用无线传感网络采集井下人员位置信号,利用自适应算法对信号自适应滤波处理,利用离散快速傅里叶变换对无线传感网络信号矩阵的各个维度做波束形成,对矩阵的各个维度传感信号进行加权合并,增强各个维度上目标信号的强度,利用UWB技术对信号传输,根据增强后的目标信号传输信息确定井下人员位置,以此实现基于无线传感网络与UWB技术的煤矿井下采掘人员定位。经实验证明,设计方法定位相对误差低于10 cm,定位失败人员数量与总人数比例为3%,设计方法在煤矿井下采掘人员定位方面具有良好的应用前景。

嵌入式技术下无线传感通信网络拥塞控制系统

无线传感通信网络在数据传输过程中容易出现网络拥塞,存在全局吞吐量小、端到端延时大、节点丢包率高的问题,导致网络拥塞控制效果不佳。为了解决这个问题,设计一种嵌入式技术下无线传感通信网络拥塞控制系统。设计嵌入式以太网拥塞数据交换接口电路,采用嵌入缓冲器开环控制模块结构,根据排队长度变化控制数据包丢弃率。计算接收方通告窗口大小,检测高、低优先级传输网络拥塞情况。通过计算拥塞节点发送速率来控制高、低优先级传输网络局部拥塞。将全局拥塞竞争窗口变为当前窗口,使用检测缓存队列占空率方式控制全局拥塞。测试结果表明,所设计系统最大吞吐量为2600 b/s,最大端到端延时为18 s,最大节点丢包率为2.0%,使用该系统能够提升网络拥塞控制效果。

基于WCDMA移动通信系统实践课理论与实践相结合的教学方法研究

WCDMA移动通信系统实践课是理论和实践相结合的课程。为了让学生能够更好的通过实践来理解相关理论,再通过相关理论来指导学生的实践,所以要研究和探讨基于WCDMA移动通信系统实践课理论与实践相结合的教学方法是非常必要和有意义的。

无线传感器网络中无线充电关键技术研究

无线传感器网络具有低功耗、低成本、高可靠性等特性,近年来被广泛应用于智慧交通、绿色节能以及环境监测等领域。传感器节点通常采用电池供电,其充电技术逐渐成为无线传感器网络领域的一个重要研究问题。为提高无线传感器网络中的节点充电效率,引入无线能量传输技术,开展传感器节点无线充电方法的设计研究。首先,根据节点的能量消耗来源,建立各节点能量消耗模型;其次,基于传感器节点的电量消耗模型,设计移动充电车的充电方案;最后,针对复杂网络环境,设计多台充电车分工合作充电机制。实验结果表明,文章所提出的充电技术有效提高了无线传感器网络的充电效率和网络监控质量,为延长传感器节点生命周期提供了新的思路和方法,具有较好的理论和应用价值。

科技创新背景下“无线传感器网络”教改初探

在科技创新背景下,“无线传感器网络”课程在信息化人才培养方面起着至关重要的作用。为应对传统教学模式和考核方式的不足,文章提出了一系列课程教学改革措施,包括理论教学结合应用导向、整合物理实验与虚拟实验、深掘无线传感器网络多领域应用以及丰富考核模式等。这些举措旨在积极推动科技创新与教育的深度融合,促使课程教学取得更为显著的成效。

基于秘密共享的无线传感器网络节点隐私保护技术

为提高网络的安全性,文章分析了基于秘密共享的无线传感器网络节点隐私保护技术。首先分析了秘密共享的原理及其在无线传感器网络中的应用,其次从3个方面分析了节点隐私保护技术优化,最后进行实验分析。