The information of surface acoustic wave sensor is gained by interrogation unit emitting the RF interrogation signal and receiving the response signal.
分析了声表面波传感器无线测量时访问信号的宽度对回波及测量的影响。
In the paper, I apply the modal acoustic emission method which is based on the traditional resonant sensor parameter acoustic emission method to analyze the compound material destr...
在本文中，我在传统的参数式声发射技术的基础上，应用了模态声发射技术。
Optical measurement, camera method and microscopic crack method could generally only measure the existing cracks width, over speed acoustic and impact elastic wave method could only measure the depth of crack acoustic emission, sensors and fiber-optic sensor network could measure current occurring cracks.
通常光测法、摄像法、裂缝显微镜法仅能测量已有旧裂缝的宽度，超声波法和冲击弹性波法仅能测量裂缝的深度，声发射、传感器法和光纤传感网络法可测量正在发生的裂缝。
In this paper, a passive acoustic direction system based on vector sensor for underwater targets is proposed.
本论文研究了一种基于矢量传感器的被动声定向系统。
Static and dynamic analysis of the micro-machined miniature acoustic sensor has been performed.
对比表明，有限元分析的结果与解析方法以及实验结果相一致。
Develops an emulator for single target tracking of acoustic wireless sensor networks in Visual C++ 6.0 and MATLAB 6.5, and extensive simulations have been conducted to characterize performance of the node self-organizing algorithm, weighted-centroid target localization algorithm and trilateration.
在Windows操作系统平台上，使用Visual C++6.0和MATLAB 6.5开发了一个基于声音的无线传感器网络单目标跟踪仿真实验平台WinWSNSim，并在该平台上，对基于声音能量的传感器网络节点自组织策略、加权质心定位算法以及三边测量定位算法进行了仿真实验。
This paper deals with the target detecton, identification, locating and tracking of the acoustic detection system as well as signal processing of the acoustic sensor array.
由于战场传感监视系统及反直升机、反坦克等武器系统的需要，作为无源探测的声探测技术受到了世界各国的普遍重视。
Sound wave has both scalar quantity and vector field, while traditional acoustic pressure sensor system merely ma...
声波兼有标量场和矢量场，传统的声压水听器系统仅利用了其声压信息。
Sound wave has both scalar quantity and vector field, while traditional acoustic pressure sensor system merely makes use of its acoustic pressure information.
声波兼有标量场和矢量场，传统的声压水听器系统仅利用了其声压信息。
SAW sensing detection technique has good future applications..This dissertation begins with acoustic principle of SAW, and gives a brief introduction of SAW sensing mechanics. Materials and fabrication technology of SAW sensor are also involved.. More attention is paid to analysis of SAW IDT simulation, including δ function model, equivalent circuit model and Coupling-of-Modes model, and perturbation effect theory on sensor surface as well. Depending on these theories and research, we develop a dual channel shear-horizontal surface acoustic wave sensor based on 36°-YX LiTaO_3 substrate with 52 MHz and 104 MHz center frequency, and describe the SAW senor interface circuit design in detail.
本文从声表面波的声学原理入手，简要介绍了声表面波传感器的传感机理，及其制作的相关材料和工艺，重点从δ函数模型、等效电路模型和耦合模模型入手分析研究了声表面波叉指换能器的建模仿真，声表面波传感器的界面扰动效应理论，在以上理论研究的基础上，设计制作了以36°-YX LiTaO_3单晶为基底的52 MHz和104 MHz双通道水平剪切声表面波传感器，详细论述了声表面波传感器的高频接口设计技术。
The sensor featuring simple structure and low cost is composed of microphone and a sealed chamber, The contactor transforms slide to vibration which is transformed to electric signal then by acoustic element, wavelet-analysis is used for signal processing, Experimental result demonstrates that the sensor can provide the reliable signal of the touch-slide.
该传感器主要由麦克风和一个密封腔组成，结构简单，成本低。通过把物体滑动时造成的微小震动信号转化为声电信号，利用小波分析处理采集到的信号，。性能试验表明，该传感器能够提供可靠的触滑动信号。
After studying the theory of combined signal processing with acoustic pressure and particle velocity, a method of direction estimation underwater, which is based on intensity measurement using an acoustic vector sensor, is presented. In the low frequency field with kinds of line-spectra, azimuth angle estimation is achieved based on the probability density statistics and bar graph approach. It can preferably resolve the problem of left/right bearing resolution and estimate the direction of space.
为了对水下目标进行定位，基于声压与振速联合信号处理的理论，研究了复声强法对水下目标信号的定向技术，并使用概率统计和直方图的理论对目标的方位角和俯仰角值进行了估计，在线谱分量存在的低频段对估计角度进行了概率统计，较好地解决了左右舷的分辨问题，实现目标的全空间无模糊定向。
Active time reversal mirror needs monostatic sensor, and the signal propagates through the acoustic channel twice leading to low efficiency.
主动式时间反转镜要求阵元收发合置，且信号需两次经过信道，效率低下，而阵处理则进一步增加了系统的复杂性，难以满足水声通信节点追求结构简单、低功耗的要求。
A new passive and wireless Surface Acoustic Wave (SAW) sensor array is introduced.
介绍了一种新型的无源、无线声表面波传感系统。
A modified equivalent circuit model of an acoustic gas sensor with resonator is introduced in this paper.
提出了一种谐振腔声气体传感器的等效电路修正模型。
Acoustic pressure sensor designed by electret capacitance can withstand fluid static pressure and detect accurately transient pressure signals.
采用驻极体电容设计了既能承受管道中流体的静态压力，又能及时准确地检测充液管道中瞬变压力的声压传感器。
As oscillating frequency of acoustic surface wave delay line oscillator is influenced by temperature, output frequency of the sensor is not only determined by deposited mass, but also determined by temperature.
由于环境温度对SAW延迟线振荡器的振荡频率影响较大，传感器的输出不仅决定于质量沉积区所沉积的质量，还决定于测量时所处的环境温度。
Study on acoustic vector sensor signal processing is one of the most attractive fields of underwater acoustic engineering. Analyzing and processing the datas measured by acoustic vector sensor is the key to make its advantages.
声矢量传感器技术正成为水声工程领域令人瞩目的研究方向之一，对其接收到的声矢量信号进行分析处理成为体现声矢量传感器优越性的关键。
PUS (Passive Ultrasonic Sensor) e acoustic wave pulse compression filter
被动式超声波传感器声表面脉冲压缩滤波器
E acoustic wave pressure sensor ultrasonic generator
声表面波式压力传感器超声波振荡器超声波发生器