光纤传感技术的研究进展及应用

随着光纤传感技术的不断发展,几乎在各个领域得到研究与应用。综述光纤传感技术的最新研究进展及其在某些领域的应用开发研究。首先介绍了光纤光栅传感器、阵列式光纤传感系统、分布式光纤传感系统以及智能结构的光纤传感器原理、优缺点及研究方向,这些是目前研究的热点;其后介绍了光纤传感技术在军事、周界安防、工程应用、电力工业等领域的应...     

前景广阔的声表面波传感技术

本文着重介绍了新型传感器技术引人注目的一个分支-声表面波传感技术。由于它所特具的众多优点和极其宽广的应用范围，被誉为传感技术领域内的“多面手”。介绍了瑞利波模式表面波传感器的无线和气体传感的典型应用。讨论了可用于液体敏感的声波模式以及相应的传感器。本文还就声表面波传感技术的研究方向和发展等问题发表了作者的见解。     

光纤传感技术的发展与应用

随着光纤传感技术的不断发展,几乎在各个领域得到研究与应用。首先介绍了光纤的结构与分类,光纤传感器的工作原理、分类及其特点,光纤弯曲损耗;其后介绍了光纤传感技术的发展现状及其在各领域的应用;最后是对光纤传感技术发展的进一步展望。     

光纤传感器的研究及应用

介绍了光纤传感器与其他传感器相比的优点,还介绍了传感型光纤传感器与传光型光纤传感器的基本原理.同时,文章阐述了强度调制型光纤传感器、干涉型光纤传感器、光纤光栅和光纤声发射传感器的应用.文章最后提出了我国光纤传感技术存在的问题以及发展方向.     

光纤传感技术的发展及应用

介绍了传光型光纤传感器与传感型光纤传感器的基本原理,阐述了强度调制型光纤传感器、干涉型光纤传感器、光纤光栅以及光纤声发射传感器的应用,提出了我国光纤传感技术存在的问题以及发展方向.     

光纤传感技术的应用及发展

介绍了传光型与传感型光纤传感器的基本原理，阐述了强度调制型光纤传感器、干涉型光纤传感器、光纤光栅以及光纤声发射传感器的应用，指出我国光纤传感技术存在的问题以及发展方向。     

光纤光栅传感技术的优势与应用

从光纤传感技术的优势出发,介绍了一种新型功能强大的光纤传感技术-光纤光栅传感器.着重论述了分布式光纤光栅的关键技术和光纤光栅传感器产品的应用情况,分析了光纤传感技术的未来发展趋势.     

光纤布拉格光栅压力传感技术与应用进展

光纤布拉格光栅（FBG）压力传感器具有水下无源、耐腐蚀、重量轻、成本低和抗电磁干扰等优点,应用广泛。文章简要介绍了FBG压力传感的基本原理,概述了FBG的写制技术、压力传感及增敏技术、温度补偿技术的发展现状,总结了近几年FBG压力传感器在海洋深度、湖泊液位测量、油气管道压力测量和岩土压力监测领域的应用进展,最后对FBG压力传感技术进行了展望。     

基于物联网的光纤传感技术应用方案

传感器是物联网的核心,光纤传感器具有电传感器无可比拟的优势。在介绍光纤传感器基本原理及发展现状的基础上,针对物联网技术的发展及不同应用场景,设计了一种基于物联网的光纤传感技术应用方案,该方案能满足不同行业的需求,实现行业的智能化。     

机器人光电接近觉传感技术综述

传感技术是智能机器人的关键技术之一。介绍了机器人接近觉传感技术中应用最多的传感器—光电式接近觉传感器的常见三种传感机理和国内外研究现状，并简要地预测未来的发展趋势。     

Development of embedded piezoelectric acoustic sensor array architecture

This paper examines development of novel piezoelectric acoustic sensors, which are capable of sensing high frequency acoustic emissions in a composite/metallic plate. The fabrication of the piezoelectric acoustic sensors, made from piezoceramic ribbons, is described in the paper. An attempt was made to build directionality into the sensing system itself. Continuous sensors placed at right angles on a plate are discussed as a new approach to measure and locate the source of the acoustic waves. Novel signal processing algorithms based on bio-inspired neural systems for spatial filtering of large numbers of embedded sensor arrays in laminated composite media are presented. It is expected that the present work would help in the development of microelectronic sensing aiding diagnostics and prognostics techniques for highly efficient health monitoring of integrated aerospace vehicles and structures.     

微悬臂梁在化学及生物传感器中的应用进展

微悬臂梁结构传感器以其低成本、小体积、高性能在当今传感器研完中愈来愈受到重视。文章概述了以微悬臂梁为主要结构的传感器在化学及生物探测中的应用进展，介绍了几种可能用于化学和生物探测的高性能微悬臂梁传感器。     

空间相关信道下一种合作感知节点集合选择算法

在空间相关信道条件下随着合作感知节点数目的增加,新增合作感知节点所带来的性能增益将会越来越小并趋近于零,同时系统资源使用效率也将会随着合作感知节点数目的增加而降低,因此在选择合作感知节点数目时需要在感知性能与资源使用效率之间进行折衷。本文提出了一种合作感知节点集合的贪婪选择算法。该算法首先在对感知性能和资源使用效率进行折衷的基础上得到判决门限,并依此判决门限选择满足条件的合作感知节点集合。仿真结果证明了所提出算法的有效性与可靠性。      

光纤传感技术在气体检测方面的应用

介绍了气体传感器的主要特性与光纤传感技术在气体检测方面的应用,比较了几种光纤气体传感器的优缺点,设计了一种基于光谱吸收原理的新型开放式气体传感器,展望了光纤气体传感器的发展方向和广阔前景.     

Review of fiber Bragg grating sensor technology

The current status of the fiber Bragg grating (FBG) sensor technology was reviewed. Owing to their salient advantages, including immunity to electromagnetic interference, lightweight, compact size, high sensitivity,large operation bandwidth, and ideal multiplexing capability, FBG sensors have attracted considerable interest in the past three decades. Among these sensing physical quantities, temperature and strain are the most widely investigated ones. In this paper, the sensing principle of FBG sensors was briefly introduced first. Then, we reviewed the status of research and applications of FBG sensors. As very important for industrial applications,multiplexing and networking of FBG sensors had been introduced briefly. Moreover, as a key technology, the wavelength interrogation methods were also reviewed carefully. Finally, we analyzed the problems encountered in engineering applications and gave a general review on the development of interrogation methods of FBG sensor.     

基于能量监测的传感器信任评估方法研究

目前解决无线传感网节点安全的方式多种多样,无线传感器也将随着物联网的发展而呈现多样化.根据物联网传感层的特点和其特有的安全问题,本文提出了一种基于能量监测的信任评估方法来解决无线传感网节点的信任问题.该方法首先针对无线传感器能耗情况,创建了传感器能量监测机制;然后,根据监测能量机制中的监测信息,通过互相关系数方法分析计算,得出传感器所处的几种信任度;最后,对传感器进行信任评估,并给出评估结果.仿真对比结果表明,本文提出的方法具有较高的准确性.     

Distributed Active Sensor Scheduling for Target Tracking in Ultrasonic Sensor Networks

Active ultrasonic sensors for target tracking application may suffer from inter-sensor-interference if these highly dense deployed sensors are not scheduled, which can degrade the tracking performance. In this paper, we propose a dynamic distributed sensor scheduling (DSS) scheme, where the tasking sensor is elected spontaneously from the sensors with pending sensing tasks via random competition based on Carrier Sense Multiple Access (CSMA). The channel will be released immediately when sensing task is completed. Both simulation results and testbed experiment demonstrate the effectiveness of DSS scheme for large scale sensor networks in terms of system scalability and high tracking performance.     

Maximizing the lifetime of energy‐constrained cooperative spectrum sensing sensor network

Adding the cognitive capability to wireless sensor networks allows the sensors to monitor the spectrum and identify the spectrum holes to operate in different frequencies according to the radio environment which result in better spectrum utilization. Spectrum sensing is a main component in any cognitive radio network. In this paper, we propose a new cooperative sensing scheme based on energy detection for cognitive sensor networks which is constrained by the energy limitation of the wireless sensor elements. The proposed scheme minimizes the sensing energy for individual sensor and carefully selects the suitable participant sensors in each cooperative sensing process. This results in maximizing the lifetime of energy‐constrained wireless sensor networks. The proposed scheme also takes into consideration the constraints on the detection accuracy. The simulation results show that the proposed scheme prolonged the lifetime of the cognitive network, makes efficient usage of available spectrum by secondary users, and satisfy the target detection performance.     

Biomedical sensors in interventional systems: present problems andfuture strategies

The authors consider important problems in biomedical sensor development, including physical configuration, packaging connection to the remaining system, power supply, simultaneous sensing of multiple variables, signal processing, and costs. In addition to using conventional sensing technologies, biomedical sensors have recently incorporated microelectronic, signal processing, and optical techniques. Traditional sensing approaches have been used in ways, and novel technologies have been developed for biomedical sensors