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检索条件"机构=Key Laboratory of Electro-optical Information Control and Security Technology"

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All solid state Mid-IR laser

All solid state Mid-IR laser

引用

2011 Academic International Symposium on Optoelectronics and Microelectronics technology, AISOMT 2011

作者： Xiao-Juan, Zhang Hai-Bo, Yang Hong, Xu Jun, Cai Science and Technology on Electro-Optical Information Security Control Laboratory Hebei China

ISBN: (纸本)9781457707964

A Tm laser pumped Mid-IR all solid-state laser is reported. A thulium laser is used to directly drive a ZnGeP2 optical parametric oscillator (OPO) with 1.99μm output to generate the 3∼5μm wavelength. Diode pumped Tm:YAP laser operates on 1.99μm, repetition frequency of 10KHz, the optical to optical conversion efficiency is 28%. The all solid-state Mid-IR laser runs at room temperature and achieves over 1W at 3∼5μm with an optical to optical conversion efficiency of 5.4% starting from the pump diode. © 2011 IEEE.

关键词： optical parametric oscillators

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Design of the linear array CCD acquisition system that line frequency and integration time adjustable

Design of the linear array CCD acquisition system that line ...

引用

International Conference on electronics and Optoelectronics

作者： Hu, Tao Chen, Ya-Nan Science and Technology on Electro-Optical Information Security Control Laboratory Sanhe Hebei China

ISBN: (纸本)9781612842738

Linear array CCD acquisition system is generally used for high precision measurement and control field. In this paper, firstly introduce a design of linear array CCD acquisition system that provide two features of adjustable line frequency and integration time, and secondly present linear array CCD acquisition system components, linear array CCD device principles, timing-driven design, signal processing circuit and data acquisition circuit, then highlights the linear array CCD timing-driven design, the design of line frequency and integration time adjustable, and illustrate the advantages of the system such as the convenience, the agility and the reliability, etc. © 2011 IEEE.

关键词： Data acquisition

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Design and implementation of the laser range-gating imaging synchronization control system

Design and implementation of the laser range-gating imaging ...

引用

International Conference on electronics and Optoelectronics

作者： Xu, Shiwei Zhang, Shengchong Tang, Shuwei Science and Technology Electro-Optical Information Security Control Laboratory Sanhe HeBei China

ISBN: (纸本)9781612842738

Described a laser range-gating imaging principle, pointed out the key issues in system design, design and implementation of FPGA-based laser range-gating images systems. System uses the rangefinder, adjustable pulsed laser active Illuminating and ICCD technology combined. Pulse characteristics of laser light source, single pulse energy and the strobe imaging device performance will determine the range-gating imaging of the range resolution, detection range properties. FPGA implementation of the synchronization control process to explore in detail the role. Experiment to verify the theoretical analysis of the accuracy and efficiency of the technology of gated confirmed laser range-gating laser technology is to overcome the backscattering enhance-gated imaging system signal to noise ratio of the effective method. © 2011 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Variable frequency speed-regulation system of elevator using PLC technology

Variable frequency speed-regulation system of elevator using...

引用

3rd IEEE International Conference on Advanced Computer control, ICACC 2011

作者： Jiang, Jing Zhang, Xuesong Beijing China Science and Technology on Electro-optical Information Security Control Laboratory Hebei China

ISBN: (纸本)9781424488087

In this paper, the system of variable frequency speed-regulation based on PLC was proposed. Firstly, the overall structure of control system was determined. Inverter and programmable logic controller were chosen to complete variable frequency speed-regulation. Secondly, parameters of inverter were set by develop system hardware. PLC drive selection and I/0 points distribution were completed;rotary encoder was connected with PLC interface. Finally, the software flow charts and ladder programs were designed by analysis of elevator system on the basis of software design methods. © 2011 IEEE.

关键词： control systems

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Inverter air-conditioning control system using PID fuzzy controller

Inverter air-conditioning control system using PID fuzzy con...

引用

Chinese control and Decision Conference

作者： Jing, Jiang Xuesong, Zhang North China Institute of Science and Technology Beijing 101601 China Electro-optical Information Security Control Laboratory Northeast Institute of Electronics Technology Sanhe Hebei 065201 China

ISBN: (纸本)9781424487363

In this paper, temperature fuzzy controller was designed in the inverter cold and hot air-condition. The control system for inverter air conditioner was divided indoor machine and the outdoor machine. Frequency control was realized by design of hardware circuit and two-dimensional temperature controller was selected in the fuzzy control program. PID fuzzy controller suitable for real-time control was proposed. Finally, the practicability of self-adjust PID fuzzy controller was confirmed by simulation curve. It was shown that self-adjust PID fuzzy controller had a better control performance than conventional fuzzy control methods. © 2011 IEEE.

关键词： Fuzzy control

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Multiphoton absorption and damage threshold of Yb3+ and Tm 3+ doped SiO2 fiber core

Multiphoton absorption and damage threshold of Yb3+ and Tm 3...

引用

2011 Academic International Symposium on Optoelectronics and Microelectronics technology, AISOMT 2011

作者： Yunju, Zhang Zhongkai, Wang Yanan, Chen Youyi, Zhao National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin China Science and Technology on Electr-optical Information Security Control Laboratory Liang Fang China

ISBN: (纸本)9781457707964

Using the Yb3+ and Tm3+ doped SiO2 fiber rods as the samples and ultrafast 800 nm femtosecond (fs) laser sources, the multiphoton absorption characteristics and damage threshold are experimental investigated based on the open Z-scan and nonlinear transmission measurement technology. The five-photon absorption coefficient of the Yb3+ doped fiber core has nearly tenfold increment than that of the fiber clad. But the five-photon absorption coefficient of the Tm3+-dopd fiber core is less than 5% of the fiber clad. With the incident fs laser power increasing, the five-photon absorption coefficient of three different samples is decreased. Further analyzing the open Z-scan results, the multiphoton absorption should contain the six-photon absorption process. Using the nonlinear transmission measurement technology, the damage thresholds are measured, and they are 12.1 TW/ cm2 (the Yb3+-doped fiber core) and 16.4 TW/cm 2 (fiber clad). © 2011 IEEE.

关键词： Photons

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Hardware/software co-design of embedded image processing system using systemc modeling platform

Hardware/software co-design of embedded image processing sys...

引用

3rd International Conference on Image Analysis and Signal Processing, IASP 2011

作者： Wang, Chong Zheng, Hong Li, Zhen School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China Science and Technology on Electro-Optical Information Security Control Laboratory Hebei 065201 China

ISBN: (纸本)9781612848808

In this paper, a SystemC-based hardware/software co-design methodology for embedded image processing system is presented. With the development of the IC process, traditional design methodologies cannot meet the requirement of complex digital image processing systems. Hardware/software co-design is the new solution for designing embedded system. SystemC is promoted by the Open SystemC Initiative, which provides a well-defined set of C++ classes to accurately describe hardware;C++ can be chosen to describe both hardware and software throughout the whole design flow to support hardware/software co-design. SystemC can provide co-design platform for an embedded image processing system. © 2011 IEEE.

关键词： Image processing

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Study of second harmonic generation technique for CO2 laser

Study of second harmonic generation technique for CO2 laser

引用

2011 Academic International Symposium on Optoelectronics and Microelectronics technology, AISOMT 2011

作者： Wanli, Zhao Yanan, Chen Xiusheng, Yan Shanghong, Guan Yuping, Du Weiwei, Han Science and Technology on Electro-Optical Information Security Control Laboratory Hebei China Laser Saw Department 45th Research Institute of China Electronics Technology Group Corporation Beijing China

ISBN: (纸本)9781457707964

关键词： Harmonic generation

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All solid state Mid-IR laser

All solid state Mid-IR laser

引用

Academic International Symposium on Optoelectronics and Microelectronics technology (AISOMT)

作者： Zhang Xiao-Juan Yang Hai-Bo Xu Hong Cai Jun Science and Technology on Electro-Optical Information Security Control Laboratory Hebei China

A Tm laser pumped Mid-IR all solid-state laser is reported. A thulium laser is used to directly drive a ZnGeP2 optical parametric oscillator (OPO) with 1.99μm output to generate the 3~5μm wavelength. Diode pumped Tm:YAP laser operates on 1.99μm, repetition frequency of 10KHz, the optical to optical conversion efficiency is 28%. The all solid-state Mid-IR laser runs at room temperature and achieves over 1W at 3~5μm with an optical to optical conversion efficiency of 5.4% starting from the pump diode.

关键词： Pump lasers Semiconductor lasers Laser beams Crystals optical pumping

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Temperature control System of Air-conditioning Based on the Fuzzy Theory

Temperature Control System of Air-conditioning Based on the ...

引用

2011 IEEE International Conference Mechatronics and Automation(2011 IEEE机电一体化与自动化国际会议)

作者： JIANG Jing ZHANG Xuesong China University of Mining and Technology (Beijing)Science and Technology on Electro-optical Informa Science and Technology on Electro-optical Information Security Control Laboratory Northeast Institut

Two-dimensional fuzzy temperature controller was used in the system of inverter air-conditioner to control the room temperature. Self-adjustment PID fuzzy controller was proposed to realize real-time control function. V / F control mode was used to compensate with low voltage, the average sampling algorithm was proposed to implement SPWM waveform modulation. Finally, the feasibility of self-adjustment PID fuzzy controller was verified by simulation, the actual operation results had proved that self-adjustment PID fuzzy controller had reliable, good output waveform and small harmonic wave, which could meet operational requirements of inverter air-conditioner.

关键词： Parameters Self-adjustment PID Fuzzy controller frequency conversion control fuzzy controller

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