传感器英文介绍：MEMS-气体传感器简介(英文版)ppt课件

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1、MEMS GAS SENSOR,COMPOSITION OF GAS SENSOR,CONTENTS,1、Introduction and Application 2、The classification and the principle of sensor 3、Processing and manufacturing sensor,INTRODUCTION AND APPLICATION,Gas detection in peoples production life applications is very extensive, especially in the aspects of

2、safety in production, such as, mine operation, gas production and transportation. Gas sensor is directly related to peoples life and property safety.,INTRODUCTION AND APPLICATION,Microelectromechanical systems (MEMS) technology is the micro device manufacturing method based on the development of mic

3、roelectronic technology, first in the accelerometer (加速度计), a pressure pickup (压力传感器) field. With the increase of film technology with Thin film technology (薄膜技术) development, in recent years the MEMS sensors have been widely concerned in the chemical gas detection.,INTRODUCTION AND APPLICATION,The

4、following are some of the gas sensor：,INTRODUCTION AND APPLICATION,MEMS gas sensor is compared with the traditional detection method, has the advantages of small size, high sensitivity, fast response, easy to integrate and many other advantages, is one of the main direction of the future development

5、 of gas sensors.,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,According to different detection theory can be divided into: 1、 based on the gas self photoacoustic spectroscopy and optical properties of MEMS gas sensor 2、Gas sensors sensitive materials based on adsorption principle 3、Gas sensor for

6、inflammable and explosive gas catalytic combustion 4、 Field Asymmetric Ion Mobility Spectrometry technology of gas sensor,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,1、 based on the gas self photoacoustic spectroscopy and optical properties of MEMS gas sensor：,Photoacoustic gas sensor consists of

7、 a modulated light source , photoacoustic cell , high sensitive microphone 3 main part of the system .,The principle of process：,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,1) light gas specific modulation frequency, the gas molecule in its excited state;,2) by gas molecules induced by impact way

8、 to release the absorbed energy;,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,The principle of process：,3) the heat effect generated gas collisions, gas heating expansion heat wave, its frequency and the same frequency modulation light;,4) high sensitive microphone sampling of the heat wave;,2、Gas

9、 sensors sensitive materials based on adsorption principle:,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,Surface acoustic wave (SAW) gas sensor is Bryant et al in 1981 for the first time put forward the SAW for gas sensitive research, and design the SAW gas sensor model of gas sensitive layer adso

10、rption. With the development of MEMS technology, the SAW gas sensor has been miniaturized, sensitivity, selectivity and other performance parameters have been improved.,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,The principle of process：,1) SAW generator vibration, the receiver receives the vibr

11、ation signal, and the phase sensitive detection circuit detection and accept the shock wave phase difference;,2) gas molecules attached to the film made of sensitive materials, conducting properties of materials change, phase two wave difference change.,The phase sensitive detection circuit,The prin

12、ciple of catalytic combustion type gas sensor from the gas sensor for methane, macro, CO and other inflammable and explosive gas detection.,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,3、 Gas sensor for inflammable and explosive gas catalytic combustion:,THE CLASSIFICATION AND THE PRINCIPLE OF SEN

13、SOR,The principle of process：,When there are flammable and explosive gases in the air, gas molecules in the catalytic oxidation reaction catalyst surface, and emit heat. The thermistor temperature change can be converted to electrical signals, and the reference film compared to get gas volume fracti

14、on changes.,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,4、 Field Asymmetric Ion Mobility Spectrometry technology of gas sensor,FAIMS technology is the technology of ion mobility spectrometry (IMS) based on the development of, gas sensor FAIMS technology can be used in many fields, such as atmosph

15、eric toxic gas detection based on, and has the feature of small volume accuracy.,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,The principle of process：,1) carrier gas mixed with the sample ionization after ion gate to the ion drift region,2) at high (greater than 11 000V / cm) under the effect of

16、alternating electric field, the migration velocity of different ions for nonlinear (nonlinear) changes, relevant, this change and ion characteristics therefore, ion high electric field can differentiate between low field mobility similar.,Alternating electric field to add a DC bias voltage, high ele

17、ctric field transfer effects offset detecting gas ions.,THE CLASSIFICATION AND THE PRINCIPLE OF SENSOR,The principle of process：,3) in the sample testing process to the DC bias voltage is analyzed in the sample gas composition of scanning.,PROCESSING AND MANUFACTURING SENSOR,In the processing of SAW

18、 gas sensor as an example,1) micromachined tuning fork,Processing method of machining micro fork is similar to the wishbone MEMS acceleration sensor, can adopt lithographic manner through the processing.,PROCESSING AND MANUFACTURING SENSOR,In the processing of SAW gas sensor as an example,2) thin films,Preparation of thin film by deposition will sensitive material ionized deposition on the substrate.,In the processing of SAW gas sensor as an example,PROCESSING AND MANUFACTURING SENSOR,3) package,In general, encapsulation of SAW gas sensor with MEMS device common.,THANK YOU!,

传感器英文介绍：传感器原理及应用(国外英文资料).doc

传感器原理及应用(国外英文资料)
The sensor principle and the key word you query are: sensors
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Principle and application of sensors
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Refers to the
guide
book
Test and control technology laboratory
Experiment a metal foil strain - single arm, half arm, full bridge performance experiment
Objective: to understand the strain effect of metal foil strain, single arm, half arm, full bridge working principle and performance.
Basic principle: the resistance wire under the action of external force mechanical deformation occurs, its resistance to change, this is the effect of resistance strain, describe the relation between the resistance strain effect is: Δ R/R=K epsilon type: Δ R/R for: Δ R/R resistance wire resistance relative changes,
For the strain sensitivity coefficient K and epsilon=Δ L/L for the resistance wire length relative changes,
metal foil strain gauge is through photolithography, strain sensor made of corrosion, etc, through its conversion unit under test stress state changes, the role of the bridge completed change the proportion of resistance to voltage, output voltage of bridge reflects the corresponding stress state. The wheatstone bridge output voltage U &western 1=Ek
/ 4. In the half bridge performance experiments and different loading direction of neighborhood, two strain gauge access bridge as a bridge to output sensitivity, the nonlinear improved. When the resistance strain gauge and dependent variable phase at the same time, the output voltage U &western 2=Ek bridge road
/ 2. In the whole bridge measurement circuit, the mechanical properties of the same two strain gauge bridge access to edge, different access adjacent si

传感器英文介绍：光流传感器英文资料

光流传感器英文资料
　　DescriptIon The ADNS-3080 is a high performance addiTIon to Avago Technologies’ popular ADNS family of opTIcal mouse sensors. The ADNS-3080 is based on a new， faster architecture with improved navigaTIon. The sensor is capable of sensing high speed mouse motion - up to 40 inches per second and acceleration up to 15g – for increased user precision and smoothness. The ADNS-3080 along with the ADNS-2120-001 trim lens， ADNS-2220-001 assembly clip and HLMP-EG3E-xxxxx led form a complete， compact optical mouse tracking system. There are no moving parts， which means high reliability and less maintenance for the end user. In addition， precision optical alignment is not required， facilitating high volume assembly. The sensor is programmed via registers through a four-wire serial port. It is packaged in a 20-pin staggered dual inline package （DIP）.

传感器英文介绍：化学传感器·传感器技术（第10册）：化学传感器的应用（英文版）

化学传感器·传感器技术（第10册）：化学传感器的应用（英文版）
出版时间：2013年版
内容简介
　　Chemical sensors are integral to the automaoon of a my riad industrial processes， as well as everyciay monitoring of such activities as public safety， testing and monitoring， meclical therapeutics， and many more.The Chemical Sensors references books spans 6 volumes and covers in-depth details on both materials used for chemical sensors and their applications， with voiLmies I through 3 exploring the materials used for chemical sensors-their properties， their behavior， their composition， and even their manufacturing and fabrication. Volumcs 4 through 6 explore the great variety of applicarions for chemical sensors - from manufacturino and industry to biomedical uses.
目录
1化学气体混合物分析与电子鼻：现状与未来发展趋势
1引言
2气体识别的现代方法
3电子鼻：方法与成就
4电子鼻中的信号处理
5电子鼻的制造
6电子鼻的优点
7影响电子鼻最佳运行的原因
8电子鼻的市场
9电子鼻的应用
10总结
11致谢
参考文献
2电子舌：方法与成果
1引言
2测量原理
3信号处理
4应用
5应用中的注意事项
6商业化
7结论
8致谢
9术语
参考文献
3无线化学传感器
1无线传感器：简介
2无线化学传感器
3致谢
参考文献
4远程化学传感：应用于大气监测
1引言
2大气监测的技术与设备
3应用
4结论
参考文献
5化学传感器在我们生活中的应用
1引言
2生物医学应用
3水质量检验
4食物质量检验
5环境控制
6家庭应用
7术语
参考文献
6化学传感器在工业、农业、交通运输中的应用
1引 言
2汽车中的应用
3工业中的化学传感器
4消防报警系统
5农业中的应用
6法律执行中的应用
7大气与空间中的应用
8军事上的应用
9术语
参考文献
7化学传感器的选择与操作指南
1理想的化学传感器什么样？
2应用领域对理想传感器设计的影响？
3不同应用的化学传感器：选择的决定因素？
4低灵敏度的传感器有未来吗？
5未来趋势
6气体传感器选择与使用中的一些建议
7总结
8致谢
参考文献
索引
丛书书目