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16th Annual Conference and 5th International Conference on Chinese Society of Micro-Nano technology, CSMNT 2014

作者： Zhang, Zhang Cheng, Zhengxi Zhuang, Yiwei Key Laboratory of Infrared Imaging Materials and Detectors Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai China State Key Laboratory of ASIC and System Fudan University Shanghai China School of Electronic Science and Applied Physics Hefei University of Technology Hefei Anhui China

ISBN: (纸本)9783038354628

A low power low noise CMOS amplifier with integrated filter for neural signal recording is designed and fabricated with CSMC 0.5 μm CMOS process. DC offsets introduced by electrode-tissue interface are rejected through a feedback low-pass filter. The bandwidth of the amplifier is in 3.5Hz-5.5KHz range, and the gain is about 48dB in the midband. AC input differential mode voltage range is 10mV, and DC input differential mode voltage range is 180mV. The amplifier can accommodate 180mV DC offsets drift and 10mV neural spikes. The neural probe array is integrated directly on the surface of the amplifier array chip, and is tested in saline solution, and also is implanted in rats in vivo, the results of the experiments show that the amplifier is suitable for neural signal recording. The power dissipation is about 14μW while consuming 0.16 mm2 of chip area, which satisfies implantable devices requirements. © (2015) Trans Tech Publications, Switzerland.

关键词： Signal processing

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A design of on-board dual-channel data handling method based on two FPGAs 6

A design of on-board dual-channel data handling method based...

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6th International SpaceWire Conference, SpaceWire 2014

作者： Yaopu, Zou Jiayou, Jiang Changpei, Han Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics UCAS Shanghai China Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics CAS Shanghai China

ISBN: (纸本)9780955719653

SpaceWire is used on FY4 meteorological satellite as on-board data-handling network. Based on SpaceWire, this paper provides a design using two FPGAs and AT7911 chips for the dual-channel data processing of a payload on FY4 to ensure that data can be transported efficiently and reliably. This design has proved to be feasible when tested on the ground. © 2014 University of Dundee.

关键词： Data handling

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Design and simulation of image compensation control system

Design and simulation of image compensation control system

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2013 International Conference on Mechatronics and Automatic Control systems, ICMS 2013

作者： Tan, Chan Ding, Lei Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai China

ISBN: (纸本)9783319012728

Image compensation is a key to high resolution imaging. This paper designs and simulates an image compensation control system based on swing pointing mirror. The principle of pointing mirror compensation is presented and the mathematical model of pointing mirror's driving motor is established. Based on this model, a high accurate controller which consists of current loop and velocity loop is designed and simulated. Considering that there is disadvantage of traditional speed PID controller in dynamic performance, which is speed overshoot, the speed loop adopts pseudo derivative feed-forward (PDFF) controller. Theoretical analysis and simulation results show that the designed image compensation control system has good characteristic in following performance, dynamic response and noise resistance. © Springer International Publishing Switzerland 2014.

关键词： Controllers

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Accurate vehicle detection and counting algorithm for traffic data collection

Accurate vehicle detection and counting algorithm for traffi...

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International Conference on Connected Vehicles and Expo (ICCVE)

作者： Ye Tian Yangli Wang Rui Song Huansheng Song State Key Laboratory of Integrated Service Networks Xidian University Xi'an P.R. China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai P.R. China Department of Electronic and Information Engineering Chang'an University Xi'an P.R. China

ISBN: (纸本)9781509002658

Number of vehicles on road is very important traffic data and is essential for transportation safety and management. In this paper, an approach for vehicle detection is presented. In this approach, virtual line based sensors which are just straight detection lines are first set on road lanes. Then two features, namely gradient and range feature, are proposed for vehicle detection. This is carried out by extracting and analyzing the two features on detection lines. Meanwhile, the solution for vehicle occlusion have also been proposed. Our proposed method has an outstanding advantage that it performs excellent in traffic jams as well as under various conditions, such as sunny, cloudy, and rainy days, or night time, or even tunnels with complex illumination. The high accuracy rate of our method is verified with the experiment results.

关键词： Vehicles Feature extraction Vehicle detection Roads Delays Video sequences Connected vehicles

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Study on the geometric characteristics of micro-seam stitching detectors

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Zhongguo Jiguang/Chinese Journal of Lasers 2014年第S1期41卷

作者： Gong, Xueyi Chen, Fansheng Su, Xiaofeng Huang, Sijie Liu, Qiang Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China Key Laboratories of Infrared Imaging Materials and Detectors Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China

The geometric parameters acquisition of splice detector is the most important thing to validate and evaluate the success of splice, but there is no systematic approach to solve it. For the rotation between the two detectors, the translation of the vertical slit, the slit width and other geometric parameters, the method based on imaging can give very accurate results. On the other hand, the smart-scope can give us the actual mean width of detector splicing, and the results are similar to the above. It proves that the method based on imaging can complete various geometric parameters tests with a very high precision. It just meets the needs of easy and high precision of the aerospace application, and it can provide powerful technical support for the detector slit splicing.

关键词： Aerospace applications

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CO2 monitoring spectrometer with 640x512 Pixel SWIR InGaAs focal plane array

CO2 monitoring spectrometer with 640x512 Pixel SWIR InGaAs f...

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2012 International Symposium on Photonics and Optoelectronics, SOPO 2012

作者： Peng, Wei Wu, Shixiang Ding, Lei Wang, Xianghua Hou, Yihe Liu, Jiaqing Tan, Chan Liu, Yuxuan Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai China

ISBN: (纸本)9781457709111

This paper introduces a prototype grating spectrometer measuring atmospheric column carbon dioxide (CO2) with a 640x512 pixel indium gallium arsenide (InGaAs) focal plane array (FPA). The spectrometer achieves the spectral resolutions of 0.1 nm at 1.61μm CO2 band meets the measurement requirement. The structure of the spectrometer including optics and electronics has been described in this paper. The spectrometer features a relatively fast optics, f/1.8, which benefits the sensitivity, and combines a fine slit with a large planar reflective diffraction grating. The performance of the optical design is presented to demonstrate the optical system meets the requirements for spectral resolution and sensitivity. The 640x512 InGaAs FPA with a low noise acquisition system serves to provide low noise spectral signals. The 640x512 InGaAs FPA, 25 μm pixel size, is sensitive to 0.9μm-to-1.7μm short wave infrared (SWIR) band and features a 298 K temperature detectivity, D*, greater than 5×1012 cm -1√Hz/W. © 2012 IEEE.

关键词： Carbon dioxide

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640×512 InGaAs focal plane array camera for detecting 1.58μm absorption spectra of CO 2

640×512 InGaAs focal plane array camera for detecting 1.58...

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infrared, Millimeter-Wave, and Terahertz Technologies II

作者： Peng, Wei Wu, Shixiang Ding, Lei Wang, Xianghua Zhu, Xueqian Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences 500 Yutian Road Hongkou Shanghai China Vision Engineering Ltd Shanghai China

ISBN: (纸本)9780819493170

This Paper introduces a 640×512 InGaAs focal plane array (FPA) camera integrated into a grating spectrometer for measuring 1.58μm absorption spectra of CO2. To gain atmospheric CO 2 concentration by detecting short wave infrared of reflective sunlight from the earth surface has been demonstrated to be an effective way. A hyperspectral spectrometer is designed to detect 1.58μm absorption spectra of CO 2. The spectrometer is a grating spectrometer which is optimised to respond to the spectral range from 1.562 ∼ 1.592μ with spectral resolution of 0.1nm. For high sensitivity, F-number is determined to be 1.8. We designed a 640×512 InGaAs FPA camera system which can be coordinated with the grating spectrometer. The camera integrated a 640×512 InGaAs FPA with 25 μm pixel pitch. The 640×512 InGaAs FPA is sensitive to 0.9μm-to-1.7μm short wave infrared (SWIR) band and features a 298 K temperature detectivity, D *, greater than 5×10 12 cm-1√Hzâˆ•W. The 640×512 InGaAs FPA has characteristics of quantum efficiency no less than 70% at wavelength of 1.58 μm, pixel operability more than 99.91%, two gain modes and three integrat ion modes. The camera features 3Hz rate (exposure time) and 14-bit output. The FPA's embedded TEC module is controlled to keep the detector core at proper temperature. The detector core temperature could be adjusted to below 263 K for lower readout noise and dark current. A Universal Series Buses 2.0 (USB2.0) has been used to transmit spectral data and commands. Commands of window size, position, gain mode and integration time per frame can be sent by the USB2.0 interface. © 2012 SPIE.

关键词： Semiconducting indium gallium arsenide

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CO_2 Monitoring Spectrometer with 640×512 Pixel SWIR InGaAs Focal Plane Array

CO_2 Monitoring Spectrometer with 640×512 Pixel SWIR InGaAs...

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Symposium on Photonics and Optoelectronics

作者： Wei Peng Shixiang Wu Lei Ding Xianghua Wang Yihe Hou Jiaqing Liu Chan Tan Yuxuan Liu Key laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences

ISBN: (纸本)9781457709098

This paper introduces a prototype grating spectrometer measuring atmospheric column carbon dioxide (CO_2) with a 640×512 pixel indium gallium arsenide (InGaAs) focal plane array (FPA). The spectrometer achieves the spectral resolutions of 0.1 nm at 1.61μm CO_2 band meets the measurement requirement. The structure of the spectrometer including optics and electronics has been described in this paper. The spectrometer features a relatively fast optics, f/1.8, which benefits the sensitivity, and combines a fine slit with a large planar reflective diffraction grating. The performance of the optical design is presented to demonstrate the optical system meets the requirements for spectral resolution and sensitivity. The 640×512 InGaAs FPA with a low noise acquisition system serves to provide low noise spectral signals. The 640×512 InGaAs FPA, 25 μm pixel size, is sensitive to 0.9μm-to-1.7μm short wave infrared (SWIR) band and features a 298 K temperature detectivity, D~*, greater than 5×10~(12) cm~(-1)√Hz/W.

关键词： CO_2 InGaAs FPA Short-wave infrared High spectral resolution Grating spectrometer Low noise

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Application of transcutaneous diffuse reflectance spectroscopy in the measurement of blood glucose concentration

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Chinese Optics Letters 2004年第7期2卷 411-413页

作者：陈文亮刘蓉崔厚欣徐可欣吕丽娜 State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin 300072 State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin 300072n this paper the propagation characteristics of near-infrared (NIR) light in the palm tissue are analyzed and the principle and feasibility of using transcutaneous diffuse reflectance spectroscopy for non-invasive blood glucose detection are presented. An optical probe suitable for measuring the diffuse reflectance spectrum of human palm and a non-invasive blood glucose detection system using NIR spectroscopy are designed. Based on this system oral glucose tolerance tests are performed to measure the blood glucose concentrations of two young healthy volunteers. The partial least square calibration model is then constructed by all individual experimental data. The final result shows that correlation coefficients of the two experiments between the predicted blood glucose concentrations and the reference blood glucose concentrations are 0.9870 and 0.9854 respectively. The root mean square errors of prediction of full cross validation are 0.54 and 0.52 mmol/1 respectively.

In this paper, the propagation characteristics of near-infrared (NIR) light in the palm tissue are analyzed, and the principle and feasibility of using transcutaneous diffuse reflectance spectroscopy for non-invasive blood glucose detection are presented. An optical probe suitable for measuring the diffuse reflectance spectrum of human palm and a non-invasive blood glucose detection system using NIR spectroscopy are designed. Based on this system, oral glucose tolerance tests are performed to measure the blood glucose concentrations of two young healthy volunteers. The partial least square calibration model is then constructed by all individual experimental data. The final result shows that correlation coefficients of the two experiments between the predicted blood glucose concentrations and the reference blood glucose concentrations are 0.9870 and 0.9854, respectively. The root mean square errors of prediction of full cross validation are 0.54 and 0.52 mmol/1, respectively.

关键词： Application of transcutaneous diffuse reflectance spectroscopy in the measurement of blood glucose concentration NIR OGTT

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