After comparing the principle features of MnZn ferrite material of high permeability and amorphous alloy of FeCuNbSiB,this paper produced an improved solution to sensor performance by applying highly magnetic non-brilliant alloy of iron base to the testing windings of eddy current testing sensors and designed the two-dimensional decomposition testing circuit in terms of sensor testing signal.It ended with a comparison between new sensors and traditional ferrite winding sensors in terms of sensibility and linearity.The experiment results showed that the new eddy current sensors have much better sensibility and linearity compared with their traditional peers.

关键词：涡流传感器；非晶合金；二维分解；实验对比

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Surgical training plays an important role in assisting residents to develop critical skills. Providing effective surgical training, however, remains as a challenging task. Existing videotaped training instructions can only show imagery from a fixed viewpoint that lacks both depth perception and interactivity. We present a new portable immersive surgical training system that is capable of acquiring and displaying high fidelity 3D reconstructions of actual surgical procedures. Our solution utilizes a set of Microsoft Kinect sensors to simultaneously recover the participants, the surgical environment, and the surgical scene itself. We then develop a space-time navigator to allow the trainees to witness and explore a prior procedure as if they were there. Preliminary feedback from residents shows that our system is much more effective than conventional videotaped system.

关键词：传感器；浸入式手术培训；三维重建；立体显示

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On the basis of the acceleration measurement of high impact,a high-g acceleration sensors of the piezoresistive beam-island structure at four-terminal all fixed supported was designed.Its structure was analyzed.The reasonable structure parameters were chose.And the parameter simulation and modal analysis were completed with ANSYS software.The results show that the sensor can resist 200,000 g overload and meet high impact test requirements.

关键词：高量程加速度传感器；结构设计；压阻式；ANSYS

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The ad hoc networking is an ultimate technology in wireless communication that allows wireless devices located within their transmission range to communicate directly to each other without the need for established fixed network infrastructure. It is a new area of research that has become extremely popular over the last decade and is rapidly increasing its advance into different areas of technology. In this paper1 properties, limitations and basic issues related to development of wireless sensor network applications are investigated. The focus is on reliable and energy aware inter-node communication strategies. The approaches to power control and activity control of nodes axe briefly summarized. The results of the performance evaluation of energy aware protocols through simulation are presented and discussed. The protocol that relies on hierarchical routing and uses a periodic coordination for energy efficient WSN is described and investigated.

关键词：无线传感器网络；能量感知通信；能源平衡；拓扑控制

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In this papcr,wc prcscnted an cquipmcnt fault diagnosis method based on multi-sensor data fusion,in order to solve the problems such as uncertainty,imprecision and low reliability caused by using a single sensor to diagnose the equipment faults.We used a variety of sensors to collect the data for diagnosed objects and fused the data by using D-S evidence theory,according to the change of confidence and uncertainty,diagnosed whether the faults happened.Experimental results show that,the D-S evidence theory algorithm can reduce the uncertainty of the results of fault diagnosis,improved diagnostic accuracy and reliability,and compared with the fault diagnosis using a single sensor,this method has a better effect.

关键词：多传感器；数据融合；故障诊断；DS证据理论

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The integration of Wireless Sensor Networks (WSNs) in the Future Internet has opened new opportunities for novel applications that meet the needs of modern societies. Virtualisation of the available resources and the services offered by WSNs enables their efficient sharing between diverse applications reducing costs. Responding to this challenge, the VITRO project has designed a WSN virtualization architecture that targets to decouple the physical sensor infrastructure from the applications running on top of it. In the concept of Virtual Sensor Network platform, the WSNs are capable of collaborating among each other (even if they belong to different administrator domains or comprise of heterogeneous platforms) to flexibly support service composition and fuel novel application development. To meet the diverse Quality of Service (QoS) requirements imposed by the different applications running on top of the same infrastructure, VITRO has designed, implemented and integrated a routing solution that enables the establishment of different routing paths per application, based on different routing criteria in order to optimize the performance aspect(s) of interest to each application. In this paper, we demonstrate how the VITRO routing solution could be employed in various use cases including smart homes/buildings, smart cities, smart business environments and security-related applications. We evaluate the achieved performance using computer simulation results and provide guidelines for prospective users.

关键词：无线传感器网络；虚拟化；路由；服务质量

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This paper presents an intelligent monitoring system based on a ZigBee-base wireless sensor network.The proposed system includes a sensor network configuration module,an expert system shell,and an event-condition-action (ECA) engine.The sensor network configuration module is used to configure the working properties of the ZigBee components and set up the monitoring network.The expert system shell enables users to define the related events occurred at system running,the threshold of working conditions for triggering the corresponding events,and the required commands for fitting the system.The ECA engine is used to monitor the system and provide a suitable command for system fitting in a specified event being fired.The proposed system enables user to quickly establish a wireless sensor network system without well-experienced knowledge about the wireless sensor network and the expert system.

关键词：无线传感器网络；ZigBee；监控系统；专家系统外壳

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Contour map has been known as one of the best methods to depict 3-dimensional terrains on 2-dimensional plots.With the emergence and rapid development of wireless sensor network,new approaches for contour mapping can be adopted to take the advantage of distributed nodes.In this paper,an integral contour mapping system with mobile data collection nodes is devised.Basically,the design allows each sensor node moves around a target area and extracts elevation samples in the aid of an upper reference plane.The network organization and data synthesizing algorithm are also studied.Furthermore,a low cost demonstrative platform based on 8051 microcontroller and ultrasonic (nsducers) is implemented to prove the feasibility of the system

关键词：等高线图；无线传感器网络；自动控制；微控制器；超声波换能器

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Originated from the need in the training of sports universities,a new personal motion-measurement system via piezoelectric sensor is presented to detect step number,stride frequency,and energy consumption in motion.The motion-measurement system in training should be not only accurate in detection,but also convenient for athletes.The novel system consists of detection unit,RF-wireless unit,and display unit.Using a high-sensitive piezoelectric sensor placed within the ball or lateral side of a personal shoe,the accuracy is improved greatly.With RF-wireless,the system achieves the goal in convenience.In the display unit,detected step number,stride frequency,and energy consumption are used to evaluate the quantity of motion,so the athletics can adjust their gait immediately.Compared with existing systems,the personal motion-measurement system via piezoelectric sensor improves greatly in accuracy and convenience.

关键词：传感器；运动；测量系统；无线射频技术

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Addressing drawbacks of analog components and questions of multi-channel fluxgate signal operation,a FPGA (Field Programmable Gate Array) based signal processing system is designed.Three copies of sub modules compose the whole system,each of which exclusively processes one of three outputs of the fluxgate sensor.A "Phase-Sensitive-Rectification & Low-Pass-Filtering" circuit structure is employed in the processing module,through which the fluxgate signal harmonics are extracted and converted into direct quantities according to detected magnetic intensities.Firstly designed in HDL (Hardware Description Language),afterward configurated in a FPGA chip,finally tested by processing outputs of a fluxgate sensor probe in real-time,the functionality of the designed system is verified.With inherent advantages,this FPGA based design is much reliable over temperature; by processing signals not time-sharingly but synchronously,its working speed is excellently high.

关键词：通信；磁通门；FPGA；高密度脂蛋白

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