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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921-930 订阅

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F1: Intelligent energy-efficient systems at the edge of IoT

F1: Intelligent energy-efficient systems at the edge of IoT

引用

IEEE International conference on solid-state Circuits (ISSCC)

作者： Vivek De Dennis Sylvester James Myers Jun Deguchi Shinichiro Shiratake Ingrid Verbauwhede Intel Hillsboro Oregon University of Michigan Ann Arbor MI ARM Cambridgeshire United Kingdom Toshiba Memory Corporation Kawasaki Japan Toshiba Technology Development Yokohama Japan KU Leuven Leuven Belgium

ISBN: (纸本)9781538622278;9781509049400

Energy efficiency as well as security of ubiquitous smart, secure & connected devices at the edge nodes of IoT are critical for realizing robust and intelligent end-to-end cyberphysical systems that deliver compelling new experiences and capabilities based on deep learning and other natural computing technologies for big data applications. This forum brings together low-power SoC as well as sensor, data converter, memory & wireless circuits designers, and machine learning & hardware security experts, to discuss the challenges and recent advances in the development of these edge node devices. All key hardware technologies are covered. The first speaker presents smart & energy-efficient integrated sensor technologies. The second speaker then discusses low power analog front end & data converter circuits. The third speaker provides an overview of the various intelligent and energy-efficient memory & storage technologies and systems. Ultra-low-power wireless connectivity circuits and systems are discussed by the next speaker. The fifth speaker then presents compressive imaging techniques for CMOS image sensors. Ultra-low-power SoC designs with intelligent compute and learning engines for efficient sensor data processing are covered by the next speaker. The seventh speaker presents the emerging natural computing hardware with Ising model for combinatorial optimizations. The last speaker presents the key building blocks and techniques for implementing hardware security at the IoT edge nodes.

关键词： Energy efficiency Wireless sensor networks Wireless communication Hardware Nonvolatile memory Security Circuits and systems

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An FPGA-based development platform for real-time solid state devices

An FPGA-based development platform for real-time solid state...

引用

International conference on Information Science, Electronics and Electrical Engineering (ISEEE)

作者： Muhammed Ziya Komsul Alistair A. McEwan Irfan F. Mir Department of Engineering University of Leicester Leicester UK

NAND flash-based solid state Devices (SSD) are widely used in embedded applications because of their low power consumption, high performance, and shock resistant features. However, these devices have non-deterministic response times due to erase-before-write requirements of NAND flash memory. This is a problem for applications that require real-time access to data storage facilities. Recent work has investigated novel RAID-based architectures for highly reliable SSD storage systems, with the host interface, controller, and other facilities such as garbage collectors implemented on an FPGA. The architecture gives high reliability and guarantees of data integrity in a way that protects against the known failure characteristics of flash memory, but at a further expense of timing guarantees. The contribution of this paper is the presentation, design, and analysis of a co-design simulation platform implemented in a PowerPC based FPGA environment that allows us to investigate the timing constraint issues that result from our architecture.

关键词： Hardware Real-time systems Software Ash Computer architecture Reliability Field programmable gate arrays

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A low-cost 64/spl times/64 uncooled infrared detector array in standard CMOS

A low-cost 64/spl times/64 uncooled infrared detector array ...

引用

International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： S. Eminoglu M.Y. Tanrikulu T. Akin Department of Electrical and Electronics Engineering Middle East Technical University Ankara Turkey

This paper reports the development of a low-cost, 64/spl times/64 uncooled infrared focal plane array (FPA) based on suspended and thermally isolated p/sup +/-active/n-well diodes in a standard 0.35 /spl mu/m CMOS process. The array is implemented using a simple post-CMOS process that do not require any critical lithography or complicated deposition steps. The pixel is 40 /spl mu/m/spl times/40 /spl mu/m in size with a fill factor of 44%, and it has a measured DC responsivity of 4970 V/W with a thermal time constant of 36 msec at 80 mTorr vacuum. The detector noise is measured as 0.52 /spl mu/V for a 4 kHz electrical bandwidth with a 1/f corner frequency of 4.4 Hz, resulting in a measured detectivity of 9.7/spl times/10/sup 8/cm Hz/sup 1/2/W and an estimated NETD value of 470 mK for an f=1 optics. The FPA is scanned at 30 fps using a 16-channel parallel readout circuit with low noise preamplifiers. The preamplifiers have a measured noise of 0.48 /spl mu/V, resulting in an overall estimated NETD of 800 mK, which can be decreased by increasing the number of parallel readout channels. The uncompensated pixel voltage non-uniformity is measured as 0.82%, which easily decreases down to 0.05% by compensating the fixed pattern noise. Considering its simple fabrication method and its moderate performance, this approach is suitable for low-cost commercial infrared imaging applications.

关键词： Infrared detectors sensor arrays Noise measurement Optical noise Frequency measurement Electric variables measurement Frequency estimation Circuit noise Preamplifiers Diodes

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development of high transmittance, back-illuminated, silicon-on-sapphire substrates for high quantum efficiency and high resolution avalanche photodiode imaging arrays

Development of high transmittance, back-illuminated, silicon...

引用

IEEE Photonics conference (IPC)

作者： Alvin G. Stern AG STERN LLC Newton MA USA

There is a growing need in medical, scientific and industrial applications for dual-mode, passive and active 2D and 3D LADAR imaging methods. To fill this need, solid state, single-photon sensitive silicon avalanche photodiode (APD) detector arrays offer high sensitivity and the possibility to operate with wide dynamic range in dual linear and Geiger-mode for passive and active imaging. Although silicon avalanche photodiodes offer a promising solution, large scale, high quantum efficiency and high resolution arrays have not been developed yet, primarily due to the increased fabrication complexity of such detector devices and arrays compared to the more common, non-avalanching detectors such as CCDs and CMOS-APS devices. One major fabrication challenge for avalanche type detectors is the requirement of providing effective direct and indirect optical crosstalk isolation between detectors in an array since the avalanche gain process produces photons that could create false detection events in pixels nearby and at a distance thereby increasing the noise. While it is common for CCD arrays to have a pixel pitch between 12-30 μm and for CMOS-APS devices to have pixel pitch below 10 μm, it is more challenging to architect arrays of avalanche photodiodes for example, having such a small pitch due to optical crosstalk. The second major fabrication challenge for linear mode avalanche type detectors, especially critical in arrays is the detector gain uniformity. Detector gain uniformity is a critical performance parameter since an increase in gain excess noise will make the detector arrays unsuitable for precision metrology applications. As solid-state avalanche detectors are made smaller, it becomes more difficult to control the gain excess noise due to smaller area multiplication regions where the effects from slight variations in doping profiles and electric fields produce greater gain variability compared to larger area detectors.

关键词： Detectors Substrates Silicon Optical crosstalk Optical device fabrication Avalanche photodiodes

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Direct conversion CdZnTe and CdTe detectors for digital mammography

Direct conversion CdZnTe and CdTe detectors for digital mamm...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： S. Yin T.O. Tumer D. Maeding J. Mainprize G. Mawdsley M.J. Yaffe F. Gordon W.J. Hamilton NOVA Research and Development Inc. CA USA Innovative Design Dana Point CA USA Sunnybrook & Women's College Health Sciences Centre University of Toronto Toronto ONT Canada Raytheon Systems Company CA USA

Hybrid CdZnTe and CdTe pixel detector arrays that convert X-rays directly into charge signals are under development at Nova for applications to digital mammography. CdZnTe and CdTe have superior X-ray conversion efficiency compared to either emulsion based film, phosphor-based detectors or other low-Z, solid-state detectors such as silicon. In this paper, latest results from thin (0.15 to 0.2 mm) CdZnTe and CdTe detectors will be presented in terms of MTF, DQE and phantom images. Single crystal CdZnTe detectors yield better results in DQE as well as phantom images, compared to the poly-crystal CdZnTe detectors. This is due to the non-uniformities in the poly-crystal that degrade the charge transport properties. Because of the charge-coupling limitation of the readout ASIC that was originally designed for Si detectors, the detector is biased to collect holes from the front side. This charge collection mode limits the CdZnTe detector performance. Their DQE measurements yield 25% and 65% for the poly-crystal and single-crystal CdZnTe detectors respectively. Poly-crystal CdTe test detectors were also hybridized to the same type charge readout chip. Since CdTe has much longer hole-propagation lengths compared to CdZnTe, it shows better performance in the hole-collecting mode. However, severe polarization effect degrades performance of the present device. Excellent images were also obtained from the CdTe detectors. Future work to redesign the readout ASIC and thus improve the detector performance is discussed. applications to industrial imaging such as Non-Destructive Evaluation (NDE) and Non-Destructive Inspection (NDI) are also discussed.

关键词： Mammography X-ray detection X-ray detectors Imaging phantoms Degradation Application specific integrated circuits sensor arrays Image converters Semiconductor films solid state circuits

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ULTRAMOOR: a 5-year current meter mooring

ULTRAMOOR: a 5-year current meter mooring

引用

OCEANS

作者： D.E. Frye D.B. Peters N.G. Hogg C. Wunsch Woods Hole Oceanographic Institution Woods Hole MA USA Massachusetts Institute of Technology Cambridge MA USA

The prototype ULTRAMOOR design is a subsurface mooring that supports 10 (or more) discrete acoustic current meters. Travel time and acoustic Doppler sensors are being evaluated. Each current sensor is equipped with a small, low power acoustic transmitter that transfers compressed data from the instrument to a receiver located below the euphotic zone (nominally at 500-m depth). The acoustic receiver forwards these data to an array of up to 10 expendable data capsules. In a typical scenario a capsule would release every 6 months over a 5-year deployment interval. Each capsule contains 4 Mbytes of solid-state memory and an Orbcomm transceiver, which transfers the data via satellite as the capsule drifts away from the mooring. The initial deep ocean test of the ULTRAMOOR prototype will be conducted from July to November 2000 offshore Bermuda. This paper describes the overall system design and discusses its scientific applications.

关键词： Prototypes Acoustic sensors Transmitters Instruments Acoustic arrays solid state circuits Transceivers Satellites Oceans Testing

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A 100m-range 10-frame/s 340×96-pixel time-of-flight depth sensor in 0.18μm CMOS

A 100m-range 10-frame/s 340×96-pixel time-of-flight depth s...

引用

European conference on solid-state Circuits (ESSCIRC)

作者： Cristiano Niclass Mineki Soga Hiroyuki Matsubara Satoru Kato Toyota Central Research and Development Laboratories Inc. Nagakute Aichi Japan

This paper introduces a high-performance optical depth sensor in a 0.18μm CMOS technology. At the core of the sensor, macro pixels consisting of 6×2 single-photon detectors enable accurate and selective time-of-flight measurements by taking advantage of temporal and spatial correlations of photons. An array of 32 high-throughput time-to-digital converters allows for the digitization of time-of-flight data with a resolution of 208ps within a range of 853ns, thus resolving distances up to 128 meters. Quantitative characterization of the chip sensor is reported. Depth map data acquired in a real-world situation illustrates the effectiveness of the approach in a road traffic environment.

关键词： Photonics arrays CMOS integrated circuits Optical sensors Mirrors Image resolution CMOS technology

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IP-reusable 32-bit VLIW Risc core

IP-reusable 32-bit VLIW Risc core

引用

European conference on solid-state Circuits (ESSCIRC)

作者： F. Campi R. Canegallo R. Guerrieri DEIS University of Bologna Italy

This paper presents a 32-Bit, Very Long Instruction Word RISC microcontroller specifically designed for IP-Reuse in a system-on-chip design context. The architecture aims at minimizing instruction cycles for a wide range of software applications: a 32-bit instruction set is defined for normal execution, while a reduced 16-bit instruction set allows the microprocessor to fetch instruction pairs for concurrent double-datapath execution. The architecture is described through a parametric, fully synthesizable VHDL RTL model targeted at both FPGA and Standard Cells design, and is supported by a complete software development suite derived from the open-source GNU-Gcc toolchain. The model has been synthesized to 0.18µ 6-metal Std-cells technology, functioning at 120 MHZ with an area occupation of 2.72mm 2 (30K cells, 90K gates). A test chip for the architecture has also been manufactured in 0.18µ technology, featuring 128K bytes of Data as well as 128K bytes of Instruction Memory, for an area occupation of 4.5 × 3.5mm 2 at 66 MHZ with 1.8V power supply.

关键词： VLIW Reduced instruction set computing Computer architecture Microcontrollers System-on-a-chip Application software Microprocessors Field programmable gate arrays Software standards Standards development

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development of a High Sensitivity, Wide Range CMOS Capacitive DNA sensor Array

Development of a High Sensitivity, Wide Range CMOS Capacitiv...

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International conference on solid state sensors and Actuators (TRANSDUCERS)

作者： Po-Hsuan Lai Lien-Sing Tseng Chia-Min Yang Michael S.-C. Lu Institute of Electronics Engineering National Tsing Hua University Hsinchu Taiwan R.O.C Department of Chemistry National Tsing Hua University Hsinchu Taiwan R.O.C Department of Electrical Engineering National Tsing Hua University Hsinchu Taiwan R.O.C

The charge carried by biomolecules immobilized on the electrode surface causes a direct change in the electrode capacitance, enabling capacitive sensors to provide label-free real-time detection for point-of-care diagnostic applications. This work presents a 16 × 16 capacitive sensor array implemented in a 0.35-μm complementary metal oxide semiconductor (CMOS) process. The signal-to-noise ratio of on-chip switched-capacitor readout benefits from the reduced parasitic capacitance through monolithic integration. The interdigitated sensing electrodes have an area of 30 × 30 μm 2 and a measured capacitance of 57.3 fF in air. The pH measurement exhibited a capacitive sensitivity of 151 fF/pH. The deoxyribonucleic acid (DNA) measurements showed a capacitive sensitivity of 94 fF/log 10 [DNA] from 10 aM to 100 pM.

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development of an automated multispecies gas sensor using diode laser pumped difference-frequency generation

Development of an automated multispecies gas sensor using di...

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conference on Lasers and Electro-Optics (CLEO)

作者： D. Richter D.G. Lancaster F.K. Tittel Quantum Inst Rice University Houston TX USA

ISBN: (纸本)1557526346

Summary form only given. Selective and sensitive mid-IR multi-species gas detection is an attractive tool for many real world applications. Narrow-linewidth mid-IR absorption gas sensors based on difference-frequency mixed near-IR solid-state and diode lasers have been shown to be an effective tool for molecular species detection. In real-world applications such gas sensors can be exposed to considerable temperature fluctuations and vibrations. Depending on the application, such sensors may have to cope with large dynamic changes of the gas concentration and with other potentially interfering gases. We report an automated, compact sized, portable gas sensor that uses widely tunable mid-IR difference-frequency laser generated light applied to multispecies gas detection using direct extractive absorption spectroscopy.

关键词： Gas detectors Absorption solid state circuits Diode lasers Temperature sensors Fluctuations Gases Tunable circuits and devices Gas lasers Spectroscopy

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