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检索条件"任意字段=Conference on Solid State Sensor Arrays - Development and Applications"

共 1073 条记录，以下是941-950 订阅

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Lessons learned in aerospace technology transfer to automotive applications: a mature company undergoes a startup experience

Lessons learned in aerospace technology transfer to automoti...

引用

IEEE International conference on Engineering Management (EMC)

作者： A.M. Madni L.E. Costlow BEI Technologies Inc. Sylmar CA USA

After a severe downturn in its traditional aerospace and defense (A&D) markets in the early 1990s, Systron Donner Inertial Division (SDID), a subsidiary of BEI Technologies, Inc., decided to enter commercial markets with ground breaking new technology for a solid-state rate gyroscope, the Quartz Rate sensor (QRS). The quartz Coriolis force technology was appropriate for a new automotive brake system application, but the company required radical changes in its operations to achieve successful penetration of the automotive market. After four decades exclusively in the A&D business, this decision had massive implications for the company's marketing and contracting approach, business system infrastructure, manufacturing operations, facility layout, quality system, supply-chain management, and engineering product development. Indeed, entry into the automotive market required changes that posed management challenges similar to a start-up company.

关键词： Technology transfer Automotive applications Automotive engineering Companies Business solid state circuits Gyroscopes Force sensors Appropriate technology Manufacturing

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3D Modeling of a Bipolar Smart Optical sensor Fabricated in CMOS Technology

3D Modeling of a Bipolar Smart Optical Sensor Fabricated in ...

引用

European conference on solid-state Device Research (ESSDERC)

作者： M.C. Vecchi N. Zorzi A. Pierantoni S. Abenda P. Ciampolini M. Rudan Università di Bologna Bologna Italy Divisione Scienza dei Materiali L. R. S. T Trento Italy Santa Lucia-Canetola Università di Perugia S Lucia Canetola Perugia Italy

The CMOS technology developed at IRST [G. Soncini, et a. 1993] has recently been applied to the development of optical sensors. Examples of applications to elementary devices have been given earlier, using the two-dimensional version of the device-simulator HFIELDS to carry out the numerical analysis. A more realistic example of application of such a technology is shown here, namely a pnp bipolar phototransistor.

关键词： CMOS technology Semiconductor device modeling Optical sensors Optical refraction Phototransistors Stimulated emission MOSFET circuits Optical devices Electron optics Photodiodes

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Micromachined thermoelectric test device based on silicon/germanium superlattices: Simulation, preparation and characterization of thermoelectric behavior

Micromachined thermoelectric test device based on silicon/ge...

引用

International conference on Thermoelectrics (ICT)

作者： J. Schumann C.A. Kleint H. Vinzelberg J. Thomas M. Hecker J. Nurnus H. Boettner A. Lambrecht C. Kunzel F. Voelklein Leibniz-Institute for Solid State and Materials Research Dresden Dresden Germany Infineon Technologies GmbH & Co. KG Dresden Germany Fraunhofer Institut Physikalische MeBtechnik (IPM) Freiburg Germany Fraunhofer Institut Physikalische Messtechnik Freiberg Germany FB Physikalische Technik Fachhochschule Wiesbaden ROsselsheim Germany

Strain-symmetrized superlattice structures based on epitaxially grown Si/Ge multilayers are expected to be promising systems for efficient thermoelectric micro-systems. The paper presents the development of a membrane-type sensor device consisting of Si/Ge superlattice and Si/sub x/Ge/sub 1-x/-alloy legs allowing the study of the thermoelectric behavior at minimized influence of the supporting substrate components. By means of numerical simulation the optimum layout parameters were determined as well as the temperature distribution within the device including the sensitivity to be expected were estimated. Black body radiation measurements of the functional parameters on nearly freestanding thermopile arrays in the sensor regime are presented.

关键词： Thermoelectricity Thermoelectric devices Testing Silicon Germanium Superlattices sensor arrays Thermal sensors Nonhomogeneous media sensor phenomena and characterization

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Zero-Power Wireless Sensing System Based on Piezoelectric Energy Harvesting Towards Battery-Free IOT applications

Zero-Power Wireless Sensing System Based on Piezoelectric En...

引用

International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： Fangzhi Li Zhao Chen Tianyu Zhang Yongqi Cao Honglong Chang Weizheng Yuan Kai Tao School of Mechanical Engineering Northwestern Polytechnical University China Research & Development Institute in Shenzhen Northwestern Polytechnical University China

Employing energy harvesting technology to convert ambient energy into electricity in IOT nodes is expected to solve problems caused by battery-powered devices. This paper proposed a zero-power wireless sensing system based on piezoelectric energy harvesting for battery-free IOT applications. The proposed system consists of a piezoelectric cantilever energy harvesting unit, an SP--PSSHI interface circuit and a buck converter forming up the energy management unit (EMU), a BLE SOC together with a MEMS sensor to acquire and transmit the ambient data accomplishing the wireless sensing unit (WSU) and an IOT host APP for data display. Compared to the state of the art, the proposed system is a highly integration of the energy harvester and a single-board EMU and WSU. All units are packaged into a 44×50×30mm case realizing a compact and easy-to-deploy zero-power sensing system. The average power of the energy harvester is 28.9mW, and the output of the EMU is 3.3VDC of 3.63mW. The IoT host APP can successfully receive and display the vibration and temperature data, therefore establishing a zero-power wireless sensing system with a real battery-free power supply and IoT applications.

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Single element 3-terminal pressure sensors: A new approach to pressure sensing and its comparison to the half bridge sensors

Single element 3-terminal pressure sensors: A new approach t...

引用

International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： Usha Gowrishetty Kevin Walsh Shamus McNamara Thomas Roussel Julia Aebersold Electrical & Computer Engineering Louisville KY USA Department of Biomedical Engineering Louisville KY USA

We report the development of a novel 3-terminal single element piezoresistor for ultra-miniature pressure sensor applications and compare its performance to that of a traditional half Wheatstone bridge design. The pressure sensors reported here are 0.69-French in size (1F= 333 mum) and are designed and batch-fabricated using SOI (silicon on insulator) and DRIE (deep reactive ion etching) technologies. One of the major applications of this device is for blood pressure monitoring using ultra-miniature 1F catheters. The combination of SOI and DRIE technologies results in uniform diaphragm thickness and complete elimination of the post-processing dicing step by micromachining ldquodie separation streetsrdquo during the DRIE process. The novel 3-terminal single element design and half Wheatstone bridge sensors were optimized using finite element analysis (FEA). Performance characteristics of the half bridge and 3-terminal sensors, i.e. sensitivity, nonlinearity (NL%), temperature coefficient offset (TCO) and drift were measured and compared. It was determined that the 3-terminal pressure sensors (3-TPS) had greater sensitivity, better non-linearity and lower drift compared to half bridge design sensors. The 3-TPS devices were also less sensitive to alignment errors.

关键词： Silicon on insulator technology Bridge circuits sensor phenomena and characterization Temperature sensors Piezoresistance Etching Blood pressure Biomedical monitoring Catheters Micromachining

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Program circuit for a phase change memory array with 2 MB/s write throughput for embedded applications

Program circuit for a phase change memory array with 2 MB/s ...

引用

European conference on solid-state Circuits (ESSCIRC)

作者： G. De Sandre L. Bettini E. Calvetti G. Giacomi M. Pasotti M. Borghi P. Zuliani R. Annunziata I. Tortorelli F. Pellizzer R. Bez Front End Technology and Manufacturing STMicroelectronics Milano Italy Flash Memory Group Research & Development ST M6 s. r. l. Milano Italy

A flexible program circuit for chalcogenide non-volatile memories was developed within a 4Mb ePCM (embedded phase change memory) implemented in 90 nm CMOS technology. The proposed architecture ensures adaptability with respect to process variations and is fully compatible with a single pulse approach or a multiple pulse algorithm for multi-level operation. In the former a write throughput of 2 MB/s is achieved.

关键词： Phased arrays Phase change memory Throughput CMOS technology Flexible printed circuits Phase change materials Crystalline materials Nonvolatile memory CMOS memory circuits Flash memory

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A real-time image recognition system using a global directional-edge-feature extraction VLSI processor

A real-time image recognition system using a global directio...

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European conference on solid-state Circuits (ESSCIRC)

作者： Hongbo Zhu Tadashi Shibata Department of Electrical Engineering and Information Systems School of Engineering University of Tokyo Bunkyo Tokyo Japan

A directional-edge-feature-based real-time image recognition system has been developed. By employing a digital-pixel-sensor-embedded feature extraction VLSI processor, the delay due to the image data transfer between the image sensor and the feature extraction circuits, the most serious bottleneck in such systems, has been reduced dramatically. Parallel feature vector-generation and template-matching processor functions implemented on an FPGA further accelerate the processing speed. As a result, the latency between the image capture and the final recognition has been reduced to only 906 mus, making this system suitable for time critical applications. In addition, the capability of the system for automatic adaptation to more significant features has also been experimentally demonstrated.

关键词： Real time systems Image recognition Very large scale integration Feature extraction Delay Data mining Image sensors Circuits Field programmable gate arrays Acceleration

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Characterization of an advanced airborne radiation detector system for the ARES project

Characterization of an advanced airborne radiation detector ...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： Brian J. Quiter Mark S. Bandstra Tenzing H. Joshi Jonathan Maltz Andreas Zoglauer Kai Vetter Department of Information Technology Kongu Engineering College Institute for Solar Energy Research Hamelin Hamelin Germany Institute for Solid State Physics Leibniz Universität Hannover Hannover Germany Institute for Materials and Electronic Devices Leibniz Universität Hannover Hannover Germany

The Airborne Radiological Enhanced-sensor System (ARES) Advanced Technology Demonstration (ATD) has the goal of improving capabilities to detect, localize, track, and identify illicit radiological and/or nuclear material in airborne search scenarios. The Department of Homeland Security divided the project into two separate research and development tasks that are being supported; hardware development and advanced algorithms. The hardware task developed four synchronized arrays of 26 CsI(Na) detectors, a suite of contextual sensors, and a `prior' database that provides additional context on search areas. The algorithm teams are developing algorithms that leverage the contextual sensors and the modernized detector system. Their efforts are focused in three areas: improving detection algorithms for CsI(Na) detectors; improving awareness of background fluctuations due to variability in the composition and topography of terrain; and leveraging the imaging capabilities of the detector and the contextual sensors to improve the ability to localize and track static and moving gamma-ray sources. This paper highlights the efforts of the team working in support of the Domestic Nuclear Detection Office (DNDO) to characterize the R&D products and to assess and highlight technological advances and the potential for further performance improvements that could result from the ARES ATD.

关键词： Detectors sensor arrays sensor phenomena and characterization Software Target tracking Software algorithms

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Coherently coupled photonic crystal vertical cavity lasers for communication applications

Coherently coupled photonic crystal vertical cavity lasers f...

引用

IEEE conference on Aerospace

作者： K.D. Choquctte J.J. Raflery A.J. Danner P.O. Leisher University of Illinois at Urbana-Champaign Urbana IL US Electrical and Computer Engineering Dept. University of Illinois Urbana IL USA

Optical interconnects will have an important role for internal communication within future spacecrafts as well as intra-communication between satellite constellations. Optical sources with novel functionality, such as solid state beam steering, would have many advantages. A novel approach for creating 2D arrays of coherently coupled vertically emitting laser cavities has been demonstrated and is discussed herein. Coherent optical coupling is achieved by creating a 2times2 array of defect cavities within the top distributed Bragg reflector of a photonic crystal vertical cavity surface emitting laser. By modifying the index within the coupling regions, accomplished by varying the hole parameters in those regions, coherent coupling has been observed in the far field. Utilization of this approach may lead to extended area coherent sources with high spectral purity. Moreover, tuning the phase shift between lasers in the array would enable angular steering the far field emission pattern. Such a coherent array of lasers would allow the development of optical communication laser sources with electronic beam steering capability

关键词： Optical coupling Photonic crystals Laser applications Vertical cavity surface emitting lasers Surface emitting lasers Optical arrays Laser tuning Optical interconnections Beam steering Phased arrays

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Deep level spectroscopy in high-power laser diode arrays

Deep level spectroscopy in high-power laser diode arrays

引用

IEEE Photonics conference (IPC)

作者： J.W. Tomm A. Jaeger A. Barwolf T. Elsaesser J. Bollmann W.T. Masselink A. Gerhardt J. Donecker Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie Berlin Germany Humboldt-Universität zu Berlin Berlin Germany Institut für Kristallzüchtung Berlin Berlin Germany

High-power laser diode arrays (LDA) are of utmost importance for a number of applications such as for pumping solid state lasers, laser frequency conversion, material processing and printing. For these applications device operation conditions include heavy thermal load, resulting in aging processes which limit lifetime and reliability. In order to overcome these limits microscopic insight into the aging processes is needed. Device aging is well-known to be accompanied by deep level creation, however, the mechanism trough in which specific deep levels are associated with a failure event must be separately proved for each device design. Thus analytical work and the development of new analytical techniques are required. Here we introduce Fourier-transform photo-current (FTPC) spectroscopy as a new method for the spectroscopy of deep levels in devices, e.g. for monitoring changes in the deep level concentration within the optically active layer. The basic idea of this technique is to measure the spectral sensitivity of the LDA for front facet illumination by the light coming from a FT spectrometer. The electrical signal generated within the LDA is taken from the power supply contacts of the device and is fed into the signal input port of the spectrometer. We find that the spectra obtained in this way are extremely sensitive to the aging processes and in particular to the increase of deep level contributions.

关键词： Spectroscopy Diode lasers Optical arrays Semiconductor laser arrays Aging Linear discriminant analysis solid lasers Frequency conversion Laser excitation Pump lasers

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