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所属行业:计算机、通信和其他电子设备制造业

  • 32221.无线传感器技术应用于武术的训练和运动检测规范

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    With the development of the computer wireless communication technology,wireless sensor detection is being widely applied to engineering practice.Combined with the advantages and disadvantages of the two algorithms LEACH and PEGASIS,this paper proposes a new algorithm BEAHR algorithm.At the same time,this paper establishes mathematical model algorithm of wireless network detection energy consumption for BEAHR algorithm.Finally,this paper calculates the numerical value of the three algorithms LEACH,PEGASIS and BEAHR by using the general numerical simulation software of MATLAB software.Through the numerical simulation experiments,it is found that with the increase of time,the average energy consumption of three algorithms will also be increased.Among them,the fastest increase of energy consumption is LEAC.However,the energy consumption of BEAHR algorithm is small.When the time is 1000 s,power consumption is 0.5 J,which verifies the validity and reliability of BEAHR algorithm and proves that BEAHR algorithm has the excellent performance to save energy and improve the network life cycle.
    关键词:无线传感器;BEAHR算法;能耗模型;无线检测网络;MATLAB软件;网络生命周期
  • 32222.用于选择性感知水媒体中铜(Ⅱ)的新型比色传感器

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    A novel colorimetric sensor based on BMPA derivative was designed and synthesized.The sensor displayed high selective and sensitive recognition of Cu2+ in aqueous DMSO solution via an obvious color change from yellow to pink.The color change can be attribute to form a complex with Cu2+ with C=O and N-H bonds.Based on this principle,an analytical method was developed and successfully used in the determination of the copper content in actual sample.
    关键词:传感器;比色;铜离子;水媒体
  • 32223.国际直线对撞机基于高校的探测器研究和发展报告

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    The U.S Linear Collider Detector R&D program, supported by the DOE and NSF umbrella grants to the University of Oregon, made significant advances on many critical aspects of the ILC detector program. Progress advanced on vertex detector sensor development, silicon and TPC tracking, calorimetry on candidate technologies, and muon detection, as well as on beamline measurements of luminosity, energy, and polarization.
    关键词:线性对撞机探测器;量热法;亮度;介子;极化;研究和开发
  • 32224.用于完全UXO表征的人便携式向量EMI传感器

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    The man portable vector (MPV) demonstrations at Yuma Proving Ground (YPG) and former Camp Beale, CA, were entirely funded by the Environmental Security Technology Certification Program (ESTCP) Munitions Response (MR) project MR-201005. This second generation MPV is a U.S. government-funded prototype sensor that was initially developed and tested with support by the Strategic Environmental Research and Development Program (SERDP) under the 2009 extension of Project MR-1443 with Drs. Kevin O’Neill and Benjamin Barrowes (Cold Regions Research and Engineering Laboratory [CRREL]-Engineering Research and Development Center [ERDC]), David George (G&G Sciences) and Dr. Nicolas Lhomme (Sky Research, Inc. [SKY]). This ESTCP project funded completion of the sensor-head fabrication and purchase of new data acquisition system.
    关键词:探测器;分类;数据采集;电磁感应
  • 32225.光学微环谐振器的化学气相传感

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    Real-time chemical vapor detection and analysis have broad applications in environmental monitoring, homeland security, military surveillance, and biomedical diagnosis. As an emerging new sensing technology, optical micro-ring resonator has unique advantages in developing low-cost and portable vapor sensors. This chapter introduces ring resonator vapor sensing principles, describes representative micro-ring resonator vapor sensor designs and performances, and then focuses on one special micro-ring resonator design—the optofiuidic ring resonator (OFRR), which inherently integrates the ring resonator vapor sensor and gas fluidics. The OFRR sensor has fast response to a wide spectrum of vapor analytes, with a detection limit of around 100pg. Moreover, the OFRR is a versatile sensing platform that can be integrated with micro-gas chromatography (μGC) for rapid and in situ identification of organic chemical compounds (VOCs) in complex interfering vapor mixtures. Combination with a μGC system greatly enhances the vapor detection specificity, which is one of the major limitations in optical vapor sensors. Applications of the OFRR-μGC in detection of explosives and rapid tandem-column separation of VOCs are also presented. Future research/development directions in the ring resonator vapor sensor are discussed in the end.
    关键词:化学气相检测;微环谐振器;蒸气传感器;色谱仪
  • 32226.便携式矢量时域EMI传感器和辨识处理

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    SERDP project MR-1443 entitled “Man-portable Vector Time Domain EMI Sensor and Discrimination Processing” is complete.This report contains the final design, engineering challenges, modeling advancements, and data analysis results from this project.This combination of vector receivers coupled with a laser positioning system resulted in a versatile prototype instrument delivering high quality, diverse data well suited to rigorous models of UXO and soil. New algorithms aimed at utilizing the high quality data from the MPV were developed including the Generalized Standardized Excitations Approach (GSEA) and Normalized Surface Magnetic Source (NSMS). Results from this project suggest a further need for high quality, hand held, production instruments in the time domain suited to UXO remediation efforts. The MPV2 instrument incorporates a redesign of the MPV concept.
    关键词:电磁感应;探测器;传感器;辨识处理
  • 32227.基于无机纳米粒子的印刷电子应用程序喷墨印刷的互联和接触

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    A highly viable and innovative fusion of three technological areas - microelectronics, chemistry, and printing - is foreseen in the near future that will create markets with annual revenues estimated at more than €200 billion. The combination of conductive polymers and inorganic materials with printing technologies enables thin, lightweight, and extremely cost-efficient electronic devices. Current market drivers include organic photovoltaics [1], flexible batteries [2], electro-optic devices [3], displays, and logic and memory components, including field-effect transistors (FETs) and thin-film transistors (TFTs) [4], sensor arrays [5], and radio frequency identification (RFID) tags [6].
    关键词:电子设备;导电性聚合物材料;无机材料;传感器阵列
  • 32228.基于多传感器的自主规划机械制造系统

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    Current trends in precision machinery include increased adaptability,speed and reliability.This,combined with the development of artificially-intelligent automatic sensors can lead to the establishment of highly-reliable and systematic manufacturing systems.During the automation process,equipment process parameters frequently need to be adjusted to match the requirements of different processes.Thus how to best maintain normal equipment operation and stable quality through these frequent adjustments is a key issue for manufacturers.Therefore,high-quality automated production systems allowing for fast-changeover and real-time automatic detection and performance monitoring are effectively needed.
    关键词:嵌入式力传感;多传感器;人工智能
  • 32229.基于散焦相位成像的光掩膜量化电磁边缘效应

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    The edges of absorbing regions used to de ne features on photomasks have inherent elec- tromagnetic di raction e ects that limit the focus tolerance during projection printing. In this work it is shown that the thin mask boundary layers used to characterize these e ects can be directly measured by capturing through-focus aerial images, a routine procedure for local quality inspection during mask fabrication. The Transport of Intensity phase imaging method is used to recover quantitative phase from a stack of intensity images, the phase near feature edges directly corresponding to edge e ects at the mask. We discover that the Transport of Intensity solver produces errors in the solved phase near sharp corners due to strong curl e ects in the power  ow, and an iterative solver is developed to remedy the artifacts. Using the improved algorithm, polarization-dependent edge e ects are observed experimentally in the quantitative phase images for both OMOG and ATT-PSM masks. The measured edge e ects correspond to 20nm wide imaginary valued boundary layers for ATT- PSM, and half that for OMOG masks, values which agree with those predicted by full-wave simulations in literature. Finally, the TIE is extended for the case of general illumination, and it is shown that the phase can be recovered from intensity measurements at a single focal plane by illumination patterning.
    关键词:NE特征;强度测量;散焦相位成像;电磁边缘效应
  • 32230.飞机电源测试平台用于验证自动合成的无功控制协议

    [计算机、通信和其他电子设备制造业] [2014-07-18]

    Modern aircraft increasingly rely on electric power for subsystems that have traditionally run on mechanical power. The complexity and safety- criticality of aircraft electric power systems have therefore increased, rendering the design of these systems more challenging. This work is motivated by the potential that correct-by-construction reactive controller synthesis tools may have in increasing the effectiveness of the electric power system design cycle. In particular, we have built an experimental hardware platform that captures some key elements of aircraft electric power systems within a simplified setting. We intend to use this platform for validating the applicability of theoretical advances in correct-by-construction control synthesis and for studying implementation-related challenges. We demonstrate a simple design work ow from formal specifications to auto-generated code that can run on software models and be used in hardware implementation. We show some preliminary results with different control architectures on the developed hardware testbed.
    关键词:电力系统;电力;测试床;电路;无功控制协议
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