检索结果-内蒙古大学图书馆

12th IEEE sensorS 2013 Conference

作者： Kuester, Timothy Robucci, Ryan Lam, Hung Rao, Govind Kostov, Yordan Dept. Computer Science and Electrical Engineering University of Maryland Baltimore County Baltimore MD United States Center for Advanced Sensor Technology Dept. of Chem. Biochem and Env. Engineering University of Maryland Baltimore County Baltimore MD United States

ISBN: (纸本)9781467346405

Fluorescence ratiometric temperature sensing system for stand-off temperature measurements in the physiological range is presented. It is based on the use of fluorescence dyes and an integrating photodetector system. The system is intended for use in neonatal intensive care units (NICU). It utilizes a measurement and a reference fluorescence dyes encapsulated in a film. Fluorescence is excited using LEDs and the emission is detected using photodiodes equipped with optical band pass filters. The current generated by the photodiodes is integrated and the charge is digitized. The fluorescence intensity is calculated as the difference in the measured intensities when the LED is on or off. The ratio of the two emission intensities depends linearly on the temperature. The system operates under room-light illumination with resolution

关键词： Fluorescence

来源：评论

学校读者我要写书评

暂无评论

Wavelength Dependent Ammonia Sensing Characteristics of SnO2 based Fiber Optic sensor 2

Wavelength Dependent Ammonia Sensing Characteristics of SnO2...

引用

2nd International Conference on Materials Science and technology, ICMST 2016

作者： Narasimman, S. Balakrishnan, L. Meher, S.R. Sivacoumar, R. Rufus, Elizabeth Alex, Z.C. School of Electronics Engineering VIT University Vellore632 014 India Department of Physics Government College of Technology Coimbatore641 013 India Department of Physics School of Advanced Sciences VIT University Vellore632 014 India Department of Sensor and Biomedical Technology School of Electronics Engineering VIT University Vellore632 014 India

SnO2 nanoparticles were synthesized by co-precipitation technique. The synthesized SnO2 nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and UV-visible diffused reflectance spectrometer (DRS). The XRD results addressed that the SnO2 nanoparticles was crystallized in rutile tetragonal structure. The SEM analysis confirms that the prepared nanopowder is composed of nanoparticles. Analysis of the DRS UV-Vis spectrum showed that the band gap of the synthesized SnO2 is to be ∼3.4 eV. The small cladding portion of the optical fiber was replaced with the synthesized nanoparticles. The ammonia sensing characteristics of the prepared SnO2 nanoparticles were analyzed for different wavelength ranges (red, yellow and blue) using polymethyl methacrylate fiber. It has been found that the synthesized SnO2 nanoparticles shows high sensitivity (∼23) in yellow wavelength range compared with red and blue wavelength ranges at room temperature. © 2018 Institute of Physics Publishing. All rights reserved.

关键词： Titanium dioxide

来源：评论

学校读者我要写书评

暂无评论

Bio-inspired sensor Fusion for Quality Assessment of Harumanis Mangoes

引用

Procedia Chemistry 2012年 6卷 165-174页

作者： F.S.A. Sa’ad A. Zakaria A.Y.M. Shakaff M.Z. Abdullah A.H. Adom M.N. Jaafar M.J. Masnan L.M. Kamarudin Centre of Excellence for Advanced Sensor Technology Universiti Malaysia Perlis 02600 Arau Perlis Malaysia School of Electrical and Electronic Engineering Universiti Sains Malaysia 01000 Penang Malaysia

In recent years, there have been a number of reported studies on the use of non-destructive technique to evaluate and determine mango maturity and ripeness levels. However, most of these reported works were conducted using single-modality sensing systems, either using an electronic nose (e-nose), acoustics, CCD, IR sensor or by other non-destructive measurements. This paper presents the work on the classification of mangoes ( Magnifera Indica cv. Harumanis ) maturity and ripeness levels using data fusion of the electronic nose (e-nose) and acoustic sensor and combine with CCD and IR sensor. A Fourier-based shape separation method was developed from CCD camera images to grade mango by its shape and able to correctly classify 100%. Colour intensity from infrared image was used to distinguish and classify the level of maturity and ripeness of the fruits. The finding shows 92% correct classification of maturity levels by using infrared vision Three groups of samples each from two different harvesting times (week 7 and week 8) were evaluated by the e-nose and then followed by the acoustic sensor. By applying a low level data fusion technique on the e-nose and acoustic data, the classification for maturity and ripeness levels using LDA was improved.

关键词： machine vision fourier descriptor harumanis mango grading system automated inspection acoustic e-nose

来源：评论

学校读者我要写书评

暂无评论

Design of a multi-octave balun for phased array antennas

Design of a multi-octave balun for phased array antennas

引用

6th Loughborough Antennas and Propagation Conference, LAPC 2010

作者： Pinto, J. Guy, R.F. Lewis, G.M. Lewis, R.A. Sensor Systems Dept. BAE Systems Advanced Technology Centre West Hanningfield Rd Great Baddow Chelmsford United Kingdom

ISBN: (纸本)9781424473052

In the drive for the development of wideband array antennas for military applications, a well designed balun is essential to achieve overall antenna performance. However, for balanced antenna arrays to be driven effectively, antiphase element feeds are required at the correct impedance over multiple octaves. This paper summarises balun design options in microstrip and stripline for use with highly coupled dipoles giving a 4:1 bandwidth from 2.7-10.8GHz. ©2010 IEEE.

关键词： Military applications

来源：评论

学校读者我要写书评

暂无评论

Energy transmission focused system design of passive RFID smart labels containing an electronic paper display

Energy transmission focused system design of passive RFID sm...

引用

Smart Systems Integration 2007 - European Conference and Exhibition on Integration Issues of Miniaturized Systems: MEMS, MOEMS, ICs and Electronic Components, SSI 2007

作者： Reinhold, C. Scholz, P. John, W. Hilleringmann, U. University of Paderborn Department of Electrical Engineering Sensor Technology Group Germany Fraunhofer IZM Departement Advanced System Engineering Paderborn Germany

This contribution focuses on system design considerations of an RFID system containing a bistable Electronic Paper Display (EPD). Special attention is given to the energy transmission while guaranteeing a reliable data transmission. The optimum operating frequency is chosen and a simplified system model is presented. Based on this, simulations are carried out in order to characterize the transient behavior of the system. © 2007 Mesago Messe Frankfurt GmbH. All rights reserved.

关键词： Systems analysis

来源：评论

学校读者我要写书评

暂无评论

Investigation of Wireless sensor Network Energy Detection under varying WiFi Multimedia Streaming in Real-home Environment

Investigation of Wireless Sensor Network Energy Detection un...

引用

IEEE Region 10 Conference

作者： Noraini Azmi Latifah Munirah Kamarudin David Lorater Ndzi Sabira Khatun Ammar Zakaria School of Computer and Communication Engineering Universiti Malaysia Perlis University of Portsmouth Centre for Advanced Sensor Technology (CEASTech) Universiti Malaysia Perlis

ISBN: (纸本)9781509025985

Wireless sensor Network (WSN) is vulnerable to interference from other wireless technologies such as WLAN, Bluetooth and cordless phone due to its low transmission power, data rate and bandwidth. Energy Detection (ED) is one of the available sensing technique available in Clear Channel Assessment (CCA) that is used to reduce packet collision due to interference and hidden terminal problem. To the authors' knowledge, there are numerous studies that have been conducted to investigate the coexistence of WSN with other wireless technologies and methods to overcome interference have been proposed. However, only a few studies involves ED. Thus, this study aims to investigate the impact of multimedia streaming on ED and packet loss in the home environment. A series of experimental tests were conducted in actual environment in order to study the interference phenomenon of ED and packet loss. This investigation will provide some valuable insight regarding ED in real-home environment and findings from this study will served as a baseline study or reference for future studies.

关键词： Audio Streaming Energy Detection Energy Scanning IEEE802.15.4 IEEE802.11 Performance Analysis Traffic Video Streaming WLAN WSN

来源：评论

学校读者我要写书评

暂无评论

Image processing and analysis system for corneal endothelial cell based on labVIEW and MATLAB

Image processing and analysis system for corneal endothelial...

引用

2014 International Conference on Manufacturing technology and Electronics Applications, ICMTEA 2014

作者： Yu, Cheng Bo Ke, Yan Hong Xiao, Dan Yuan, Yang Yu Yang, Yi Ju Remote Test and Control Institute Chongqing University of Technology Chongqing China Time grating sensor and advanced detection technology City key Laboratory of Chongqing China

ISBN: (纸本)9783038353287

To process corneal endothelial cell image quickly and efficiently, observe the corneal endothelial cell form and relevant calculation and analysis. This system adopts mixed programming of LabVIEW and MATLAB, to have image processing and analysis of the corneal endothelial cell. Use LabVIEW to design operation and display interface, and send the images collected to MATLAB for complex arithmetical operation, then put out data in LabVIEW. The experiment indicates the system has the advantage of intuitive interface, convenient operation, and quick arithmetic, has the practical reference value. © (2014) Trans Tech Publications, Switzerland.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

A planar, integrated total internal reflection sensor for biofouling detection

A planar, integrated total internal reflection sensor for bi...

引用

2010 Solid-State sensors, Actuators, and Microsystems Workshop

作者： Nam, K.H. Choi, W. Yeo, J. Ko, S.H. Lin, Liwei Berkeley Sensor and Actuator Center University of California BerkeleyCA United States Research Center of MEMS Space Telescope Ewha Womans University Korea Republic of LG Innotek Inc Korea Republic of Department of Mechanical Engineering Korea Advanced Institute of Science and Technology Korea Republic of

ISBN: (纸本)0964002485

A planar, integrated total internal reflection (TIR) sensor for the characterizations of biofouling has been demonstrated based on angular interrogation of Fraunhofer diffraction. This sensor is made of a two-mask process to have optical prism and built-in waveguides of 4×0.25μm2 in cross section area. The core and cladding layer of the waveguide are made of silicon nitride and silicon dioxide, respectively and a 780nm in wavelength light source is used in the experiments. Water, ethanol, acetone and glycerol, have all been tested to illustrate the basic refractive index sensing principle of the prototype sensor. Biofouling measurements show that after been immersed into milk as the testing liquid, the surface refractive index of a prototype TIR sensor shifted continuously to as much as 0.0089 for a 9-hour test. As such, this technique could be useful to various biofouling control and monitoring applications, including water desalination, medical, marine and electronic device industries. © 2010TRF.

关键词： Refractive index

来源：评论

学校读者我要写书评

暂无评论

Efficient, real-time short address allocations for USN devices using LAA (Last Address Assigned) algorithm

Efficient, real-time short address allocations for USN devic...

引用

9th International Conference on advanced Communication technology (ICACT 2007)

作者： Jeon, Ho-In Kim, Yeonsoo Dept. Electronic Engineering Kyung-Won University South Korea Ubiquitous Sensor Network Division Advanced Technology Lab. KT South Korea

ISBN: (纸本)9788955191318

In this paper, we proposed an efficient way of allocating short addresses in real-time for the USN (Ubiquitous sensor Network) devices. By the "efficient" we mean that the 16-hit address space is never wasted. The proposed addressing mechanism is based upon the information of the Last Address Assigned (LAA) that is delivered over the beacon every time it is transmitted. In contrast to the ZigBee hierarchical block addressing based on C-skip address blocks, the proposed scheme is not a systematic way of allocating short addresses and thus tree-routing is not available. However, it has great advantages when real applications for U-City services are considered. Moreover, the proposed mechanism can provide mobility of the USN devices, expandability of the wireless network, and fast device discovery.

关键词： USN IEEE 802.15.4 ZigBee hierarchical block addressing LAA (Last Address Assigned) mobility of wireless devices

来源：评论

学校读者我要写书评

暂无评论

Green synthesis of platinum/gold bimetallic nanoparticles supported onto hydrotalcite surface as heterogeneous catalyst for selective oxidation of glycerol

Green synthesis of platinum/gold bimetallic nanoparticles su...

引用

2011 AIChE Annual Meeting, 11AIChE

作者： Tongsakul, Duangta Thammacharoen, Chuchaat Ekgasit, Sanong Nishimura, Shun Ebitani, Kohki Sensor Research Unit Chulalongkorn University Bangkok Thailand School of Materials Science Japan Advanced Institute of Science and Technology Nomi Japan

ISBN: (纸本)9780816910700

Platinum/Gold bimetallic (Pt/Au) nanoparticles were successfully synthesized by green synthesis method in aqueous solution under mild condition using polysaccharide as a protecting agent as well as a reducing agent. The metal nanoparticles were supported on hydrotalcite (HT) surface by sol immobilization method and further utilized as heterogeneous catalyst. The surface morphology and compositions of supported platinum/gold (PtAu/HT) were analyzed by XRD and ICP-MS. The lattice parameter calculated from XRD diffraction pattern (111) of PtmAu100-m exhibited linearly with their compositions only at low Pt concentrations (i.e., 20 and 40% Pt). However the result XRD pattern support that Pt/Au metal might be formed the partially alloy or partially phase segregation at high Pt concentrations, (i.e., 60, 80, and 90% Pt). The catalysis of PtmAu100-m/HT (1 wt%) were evaluated for glycerol oxidation in base-free aqueous solution using molecular oxygen as an oxidant (glycerol/metal = 700 mol/mol). The moderate activities of PtmAu100-m/HT also remain with increasing of Au amount to 20%, in addition, the increasing of Au amount more than this value resulting decreased of an activity. It is due to the PtmAu100-m/HT particles size become larger with Au amount. However, the increasing of glycerol/metal ratio to 500 mol/mol was clearly seen that the presence of Au in Pt metal improved the selectivity toward glyceric acid, especially, Pt 80Au20/HT catalyst. This phenomenon is explained by the synergistic effect of Pt/Au bimetallic resulting in the decreasing of the undesired product.

关键词： Glycerol

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：