检索结果-内蒙古大学图书馆

International conference on ASIC

作者： Yanyan Qiu Center for Microsystem Instituto Superior Técnico Lisboa Portugal

solid state sensors provide an indispensable link for gathering, processing, and communicating information between microsystems, users and the nonelectronic world. As the microsystem technology rapidly gains importance in the market, solid-state sensors have become an important key factor on determining the performance of the microsystem and opening new market area for future VLSI (very-large-scale-integrated) systems. Significant advances have been made in developing new integrated sensors and microsystems, for example, sensors for measuring pressure, acceleration, flow, image, vibration, strain, sound, and many others have been developed. This paper will briefly review the state-of-the-art in integrated sensors and microsystems. The application of integrated circuit (IC) technology to microsensors is also addressed. In addition, as an example, this paper will give a short description on the basic principles and applications of humidity sensors. Moreover, sensors market development are presented in the end.

关键词： solid state circuits Acoustic sensors Image sensors Strain measurement Vibration measurement Application specific integrated circuits Performance gain sensor systems Very large scale integration Fluid flow measurement

来源：评论

学校读者我要写书评

暂无评论

Augmented extended nested array configuration for consecutive degrees of freedom enhancement

Augmented extended nested array configuration for consecutiv...

引用

Wireless Communications and applications (ICWCAPP), International conference on

作者： Honghao Hao Luo Chen Xiaofei Zhang Baobao Li Jinke Cao College of Electronic Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing China State Key Laboratory of Millimeter Waves Southeast University Nanjing China

With the increasing demand of the accuracy of direction of arrival (DOA) estimation, the spare array configurations have attracted considerable interest because of their ability of possessing increased array aperture and enhanced degrees of freedom (DOF). In this paper, we propose an augmented extended nested array (AENA) strategy based on the different co-array (DCA) theory. The AENA configuration consists of a sparse uniform linear array (ULA) and two sparse nonuniform linear arrays (NLAs) with sensor locations being determined by relative position. Compared with other existing sparse arrays, the significant advantage of AENA configuration is its ability of processing a higher number of consecutive DOF. And simulation results have confirmed the superiority that our proposed AENA configuration can furtherly reduce the root mean square error (RMSE) in DOA estimation, compared with the other nested-like array configurations.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Characterization of large-scale non-uniformities in a 20k TDC/SPAD array integrated in a 130nm CMOS process

Characterization of large-scale non-uniformities in a 20k TD...

引用

European conference on solid-state Device Research (ESSDERC)

作者： C. Veerappan J. Richardson R. Walker D. U. Li M. W. Fishburn D. Stoppa F. Borghetti Y. Maruyama M. Gersbach R. K. Henderson C. Bruschini E. Charbon Delft University of Technology Delft Netherlands Dialog Semiconductor Edinburgh UK University of Edinburgh Edinburgh UK Fondazione Bruno Kessler Trento Italy Ecole Polytechnique Federale de Lausanne Lausanne Switzerland

With the emergence of large arrays of high-functionality pixels, it has become critical to characterize the performance non-uniformity of such arrays. In this paper we characterize a 160×128 array of complex pixels, each with a single-photon avalanche diode (SPAD) and a time-to-digital converter (TDC). A study of the array's non-uniformities in terms of the timing resolution, jitter, and photon responsivity is conducted for the pixels at various illumination levels, temperatures, and other operating conditions. In the study we found that, in photon-starved operation, the TDCs exhibit a median resolution of 55ps and a standard deviation of 2 ps. The pixels show a median timing jitter of 140ps. Moreover, we measured negligible variations in photon responsivity while changing the number of active pixels. These findings suggest that the image sensor can be used in highly reliable, large-scale, time-correlated measurements of single photons for biological, molecular, and medical applications. The chip is especially valuable for time-resolved imaging, single-photon counting, and correlation-spectroscopy under many realistic operating conditions.

关键词： Photonics arrays Noise Timing Image resolution Timing jitter Imaging

来源：评论

学校读者我要写书评

暂无评论

An 8.5ps Resolution, 2000μm2 Phase-Domain Delta- Sigma TDC for Lidar applications 19

An 8.5ps Resolution, 2000μm2 Phase-Domain Delta- Sigma TDC ...

引用

19th IEEE Asian solid-state Circuits conference, A-SSCC 2023

作者： Na, Yoondeok Yun, Seokho Lee, Myung-Jae Chae, Youngcheol Yonsei University Seoul Korea Republic of Korea Institute of Science and Technology Seoul Korea Republic of

ISBN: (纸本)9798350330038

A direct time-of-flight (dToF) lidar is used for distance measurement by detecting the round-trip time of a laser pulse [1]-[4]. Single-photon avalanche diodes (SPADs) have been successfully realized in a CMOS process, and the timing circuit and memory are implemented to store multiple timestamps over conversion cycles. An effective way to detect the timestamps is to detect the arrival time via a time-to-digital converter (TDC), and to sort arrival times into histogram bins. However, as the number of pixels increases, so does the data capacity. This leads to a direct trade-off between distance resolution and the maximum distance range. To address this, partial histogram approaches have been investigated, which successively change the histogram bins by zooming or sliding [3], [4]. However, it requires a significant increase in conversion time or limits distance resolution. © 2023 IEEE.

关键词： Timing circuits

来源：评论

学校读者我要写书评

暂无评论

Monolithic Integration of Gas, Humidity, Acceleration, Microphone, Temperature and Pressure Composite Microchip

Monolithic Integration of Gas, Humidity, Acceleration, Micro...

引用

International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： Xiaohui Li Xiawei Yue Pingping Zhang Heng Yang Tiger H. Tao Nan Qin State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences China 2020 X-Lab Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China School of Graduate Study University of Chinese Academy of Sciences Beijing China Suzhou Huiwen Nanotechnology Co. Ltd Suzhou China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences Shanghai China Neuroxess Co. Ltd. (Jiangxi) Nanchang China Guangdong Institute of Intelligence Science and Technology Zhuhai China Tianqiao and Chrissy Chen Institute for Translational Research Shanghai China

This paper presents a composite microchip that is monolithically fabricated and integrated with a gas sensor, a humidity sensor, an accelerometer, a microphone, a temperature sensor and a pressure sensor by employing a single-side-processed micromanufacturing technique. The total size of this six-in-one microchip is approximate to 2.5 mm x 2.5 mm. Benefiting from the multiple sensing capabilities, it is suitable for the comprehensive detection of physical quantities in complex environments such as emergency rescue with enhanced performance and improved efficiency. The on-chip integration and functional versatility of our developed composite microchip bring new opportunities in the significant applications such as emergency rescue and public safety with enhanced performance and improved efficiency.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Physics of AlGaAs compounds for sensing applications

Physics of AlGaAs compounds for sensing applications

引用

International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： J.L. Robert V. Mosser S. Contreras Groupe d'Etude des Semiconducteurs Université des Sciences et Techniques du Languedoc Montpellier France Schlumberger Montrouge Recherche Montrouge France

It is shown that a new type of monolithic pressure sensor for high-pressure operation can be developed using the scientific properties of deep impurity states (so-called DX centers) in III-V semiconducting compounds. Due to the large intrinsic sensitivity of these tapping levels to hydrostatic pressure, all mechanical problems related to the use of a diaphragm at high pressure can be avoided. This approach is also based on the possibilities offered by band gap engineering: the development of very clean and well-controlled epitaxial growth techniques (molecular beam epitaxy, metal-organic chemical vapor deposition) opens new opportunities for measuring device applications. Particular attention is given to GaAlAs solid-state pressure sensors (passive 3-D sensors and active 2-D sensors).< >

关键词： Physics Chemical sensors Mechanical sensors Semiconductor impurities III-V semiconductor materials Semiconductivity Photonic band gap Epitaxial growth Molecular beam epitaxial growth Chemical vapor deposition

来源：评论

学校读者我要写书评

暂无评论

Nernst-Planck-Poisson Model for the Description of Behaviour of solid-Contact Ion-Selective Electrodes at Low Analyte Concentration

引用

ELECTROANALYSIS 2013年第1期25卷 133-140页

作者： Jasielec, Jerzy J. Lisak, Grzegorz Wagner, Michal Sokalski, Tomasz Lewenstam, Andrzej Abo Akad Univ Proc Chem Ctr Ctr Proc Analyt Chem & Sensor Technol ProSens Turku 20500 Finland AGH Univ Sci & Technol Fac Mat Sci & Ceram PL-30059 Krakow Poland

All-solid-state electrodes are increasingly being used in clinical, industrial and environmental analysis. This wide range of applications requires deep theoretical description of such electrodes. This work concentrates on the development of a numerical tool for the qualitative prediction of electrochemical behaviour for solid-contact ion-selective electrodes at low analyte concentrations. For this purpose, a general approach to the description of electro-diffusion processes, namely the Nernst-Planck-Poisson (NPP) model, was applied. The results obtained from this model are verified by experimental data of lead(II)-selective electrodes based on a polymeric PVC membrane with polybenzopyrene doped with Eriochrome Black T used as the solid contact.

关键词： Potentiometry Ion-selective electrodes solid contact Response Nernst-Planck-Poisson model Electrodiffusion

来源：评论

学校读者我要写书评

暂无评论

X-ray metrology for quality assurance

X-ray metrology for quality assurance

引用

IEEE International conference on Robotics and Automation (ICRA)

作者： A. Noble R. Hartley J. Mundy J. Farley GE Corporate Research and Development Center Schenectady NY USA

There is considerable current interest in deriving accurate dimensional measurements of the internal geometry of complex manufactured parts, particularly castings. This paper describes an approach to the reconstruction of 3D part geometry from multiple digital X-ray images. A novel method for radiographic stereo is described which takes into account the special imaging geometry of the digital X-ray sensor modeled by a linear moving array, or pushbroom, camera. The 3D reconstruction algorithm employs a nominal geometric model which is perturbed by X-ray image constraints. Manufacturing applications are discussed and illustrated by experimental results on synthetic phantoms and actual casting images.< >

关键词： Metrology Quality assurance X-ray imaging Geometry sensor arrays Manufacturing Casting solid modeling Current measurement Particle measurements

来源：评论

学校读者我要写书评

暂无评论

8.1 An 80nW retention 11.7pJ/cycle active subthreshold ARM Cortex-M0+ subsystem in 65nm CMOS for WSN applications

8.1 An 80nW retention 11.7pJ/cycle active subthreshold ARM C...

引用

IEEE International conference on solid-state Circuits (ISSCC)

作者： James Myers Anand Savanth David Howard Rohan Gaddh Pranay Prabhat David Flynn ARM Cambridge United Kingdom

The Internet of Things is widely expected to comprise billions of connected devices, many of which will be wireless sensor nodes (WSN). One challenge this poses is energy efficiency, as it will prove cost-prohibitive to regularly replace billions of batteries. Node cost is another concern, which will demand ever-greater integration. Ease of SW development must also remain a priority to HW designers. Addressing all of the above, this paper presents an 11.7pJ/cycle subthreshold WSN processing sub-system implemented in low-leakage 65nm CMOS, scalable from 850nW active power at 250mV to 66MHz at 900mV, with a fully integrated 82% peak-efficiency voltage regulator for direct-battery operation, and supporting 80nW CPU and RAM state-retention power gating for SW-transparent leakage reduction.

关键词： Clocks Random access memory Logic gates Wireless sensor networks solid state circuits Regulators Switches

来源：评论

学校读者我要写书评

暂无评论

The Past, Present, and Future of Electronically-Steerable Phased arrays in Defense applications

The Past, Present, and Future of Electronically-Steerable Ph...

引用

IEEE conference on Aerospace

作者： Janice C. Rock James H. Mullins Joel P. Booth Tracy Hudson U. S. Army Aviation and Missile Research Development and Engineering Center AL USA

This paper will present a study of past issues associated with electronically-steerable phased array antenna systems and methods employed to overcome these issues. It will discuss the current state-of-the-art in these type systems and the benefits to defense applications that have resulted as these technologies have matured. It will conclude with a discussion of barriers and problems that still exist - inhibiting a full integration of phased array technologies in military communication systems, fire control and illumination radar systems, and missile seeker systems. The many benefits and high performance of these systems have caught the eye of many possible users and it is important to quickly deliver to the soldier these advanced technologies. Thus quick, solid technology maturation and problem solving is a must. An example of the barriers that will be explored in depth include the use of MEMS as a low-loss phasing network solution, strap-down guidance issues, radome problems, fabrication and integration issues and heat dissipation techniques. Possible solutions to the barriers discussed will be presented and explored and future directions in phased array technology development will be proposed.

关键词： Phased arrays Antenna arrays Communications technology Military communication Fires Communication system control Control systems Lighting Radar Missiles

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：