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Depth estimation system suitable for hardware design

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Journal of Shanghai University(English Edition) 2011年第4期15卷 325-330页

作者：李贺建左一帆杨高波安平王建伟滕国伟 Key Laboratory of Advanced (Shanghai University) Display and System Application Ministry of EducationShanghai 200072P.R.China College of Computer and Communication Hunan UniversityChangsha 410082P.R.China School of Communication and Information Engineering Shanghai UniversityShanghai 200072P.R.China

Depth estimation is an active research area with the developing of stereo vision in recent years. It is one of the key technologies to resolve the large data of stereo vision communication. Now depth estimation still has some problems, such as occlusion, fuzzy edge, real-time processing, etc. Many algorithms have been proposed base on software, however the performance of the computer configurations limits the software processing speed. The other resolution is hardware design and the great developments of the digital signal processor （DSP）, and application specific integrated circuit （ASIC） and field programmable gate array （FPGA） provide the opportunity of flexible applications. In this work, by analyzing the procedures of depth estimation, the proper algorithms which can be used in hardware design to execute real-time depth estimation are proposed. The different methods of calibration, matching and post-processing are analyzed based on the hardware design requirements. At last some tests for the algorithm have been analyzed. The results show that the algorithms proposed for hardware design can provide credited depth map for further view synthesis and are suitable for hardware design.

关键词： 3-D TV (3DTV) depth estimation hardware design rank transform census transform

hardware design of Flight Control System and Flight Experiments of Small-Scale Unmanned Aerial Vehicle

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Hardware Design of Flight Control System and Flight Experime...

第32届中国控制与决策会议

作者： Xinfan Yin Kaiming Xu Huayou Liang Guichuan Zhang Xianmin Peng Qiuyun Zhang Low Speed Aerodynamics Institute of China Aerodynamics Research and Development Center School of Electronics Engineering and Computer Science Peking University Southwest University of Science and Technology

In view of the strict requirements of small-scale unmanned aerial vehicle on the performance,volume and weight of flight control system,this paper presents a hardware design of flight control system based on STM32 F103 RCT6 *** accordance with the system function and interface characteristics,the flight control system is divided into power module,main control module,sensor module and interface drive module,which meet the technical requirements of high integration,low coupling and expansibility of the flight control *** to the characteristics of different types of sensor units integrated in the system,we design the interface circuit of inertial sensor,barometer and geomagnetic sensor based on I2 C bus and GPS interface circuit based on *** flight experiments are carried out on the small-scale quadcopter *** results show that the flight control system designed in this paper has good practicability and high reliability,and meets the requirements of the small-scale unmanned aerial vehicle for the function and performance of the flight control system.

关键词： Unmanned aerial vehicle flight control system hardware design interface circuit flight experiment

hardware design of Numerical Fire Control Simulator for Naval Gun Based on Ethernet

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Hardware Design of Numerical Fire Control Simulator for Nava...

第14届中国系统仿真技术及其应用学术年会

作者： Chi HE 1,Guangling DONG 1,2,Qiang LI 1,Wenkai XIE 1,Jian LU 1 1 Dept.of Test Technology,China Baicheng Ordnance Test Center,Baicheng,China 2 Control and Simulation Center,Harbin Institute of Technology,Harbin,China

The main application of Numerical Fire Control Simulator （NFCS） for naval gun in type approval test of weapon system as well as the importance and rolls of test system for naval gun servo is ***,composition,and working principle of NFCS for naval gun based on Ethernet are introduced;its hardware design is analyzed and studied in the *** studied results indicate that the NFCS can meet with the requirements of system design indices.

关键词： Ethernet Numerical Naval Gun NFCS hardware design

Compact Real-time Simulator with Spatial-temporal Parallel design for Large-scale Wind Farms

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CSEE Journal of Power and Energy Systems 2023年第1期9卷 50-65页

作者： Hao Fu Peng Li Xiaopeng Fu Jinyue Yan Zhiying Wang Kun Wang Jianzhong Wu Chengshan Wang Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin 300072China School of Business Societyand EngineeringMlardalen UniversityVsters 72123Sweden Institute of Energy School of EngineeringCardiff UniversityCardiff CF243AAU.K

Real-time simulation of large-scale wind farms with detailed modeling can provide accurate insights into system transient behaviors,but entails challenges in computing *** paper develops a compact real-time simulator based on the field programmable gate array(FPGA)for large-scale wind farms,in which the spatial-temporal parallel design method is proposed to address the huge computation resource demand associated with detailed *** wind farm is decoupled into several subsystems based on model consistency,and the electrical system and control system of each subsystem are solved in *** the module-level pipeline technique and superscalar pipeline technique are introduced to the wind farms’simulation to effectively improve the utilization of hardware *** case studies,real-time simulations of two modified wind farms are separately carried out on a single FPGA,including one with 13 permanent magnet synchronous generators under a time-step of 11µs,and the other with 30 squirrel-cage induction generators under a time-step of 8µ*** tests,under different scenarios,are implemented to validate the numerical performance of the real-time simulator,and a comparison with the commercial tool PSCAD/EMTDC demonstrates the accuracy and effectiveness of the proposed design.

关键词： Real-time simulation FPGA wind farm spatial-temporal parallelism hardware design

An earthquake data acquisition system for mobile ob-servation

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Acta Seismologica Sinica(English Edition) 2001年第5期14卷 596-599页

作者： TENG Yun-tian Institute of Geophysics China Seismological Bureau Beijing China

Besides the same performance as the earthquake observation system possess used on the fixed earthquake station, such as wide dynamic range, high resolution, following special features are necessary for the earthquake data acquisition system (EDAS) applied for mobile observing in order to suit for running in the field: a) Reliability. The EDAS must work stably long time without being cared. b) Adaptability to the field environments. Earthquake observing in the field often encounters awful environments, such as dampness, dust, and abnormal climate, so how to make the instrument run well in the field circumstance must be considered. c) Ability of anti-vibration. The instrument for outdoor application must keep free from being destroyed during being transported long distance to the destination. d) Storage capacity. Because seismological data is large, how to store and collect the large amount data conveniently from the field is always a difficult point in the mobile observing system design. e) Automation. Timing and positioning automatically is necessary in the field. f) Power consumption. To reduce the power con-sumption as low as possible is very important to the mobile instrument which are powered with battery. g) Ability of testing itself. Testing itself automatically make it convenient in the fieldwork. h) Portability. The instrument must be portable and simply operated.

关键词： earthquake mobile observation data acquisition hardware design software design P315.62

Study on design of Magnetic Flux Leakage Testing Instrument for gun

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微计算机信息 2005年第6期 115-116+82页

作者： Wang,Changlong Fu,Junmei(Institute of Electronic and Information, Xi’an Jiaotong University)Yingwei Xu,Zhangsui(Ordnance Engineering College, Shijiazhuang 050003, China)Wang,Changlong Jin,

The paper describes the magnetic Dipole model of magnetic flux leakage(MFL) based on the principle of MFL testing, proposes the effects of surface defect width and depth on MFL field, and presents the peak-peak amplitude algorithm that the features of defect signal are extracted. The peak-peak amplitude and separation, signal gradient variation are used as the distinguish criterions of defects. The principle of instrumental hardware design is also introduced. The introduced gun MFL testing instrument is successfully employed in the nondestructive evaluation of gun.

关键词： magnetic flux leakage defect nondestructive evaluation peak-peak amplitude algorithm hardware design

design of Real-Time Spectrum Analyzer

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Design of Real-Time Spectrum Analyzer

第十三届全国青年通信学术会议

作者：杨逾山 National Mobile Communications Research Laboratory Southeast University

＜正＞Considering the problems faced by the current data acquisition systems and the outstanding merits of USB bus,a design of real- time spectrum analysis system based on USB and MCU AT89S51 is *** this paper,we give a detailed description of the hardware and software design and implementation,as well as some specific techniques to achieve the goal of real - time perfor- mance.

关键词： real-time spectrum analyzer USB interface hardware design data acquisition

Research and Application of Wireless Temperature Monitoring for Transformer Substation

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Research and Application of Wireless Temperature Monitoring ...

第25届中国控制与决策会议

作者： Qiushi Wang Zhijun Shang Shijie Cui Hongyu Zhang Peng Zeng Shenyang Institute of Automation Chinese Academy of Sciences Liaoning Electric Power Company Limited

ISBN: (纸本)9781467355339

As a very major part in the power grid, it is more and more important to monitor the temperature for the junctions of High Voltage Switchgear, Bus Connector, Outdoor Knife Switch and other important equipments in the Transformer Substation. In this article, based on the actual complex and changeable monitoring environment, we designed Temperature Monitoring System for the Transformer Substation, and expounded the structural design of the system, the hardware design of monitoring device, the process design of the system software, the choice and application of wireless communication protocols in the system, and the comparison and choice of three commonly used antenna. We also compared the Battery-powered and Induction-powered in the technical conditions in this stage, analyzed the actual performance of the two main power supply mode and gave the power design for the Temperature Monitoring System.

关键词： Transformer Substation junctions temperature monitoring hardware design power supply

Pedestrian Autonomous Positioning System Based on Inertial Navigation

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Pedestrian Autonomous Positioning System Based on Inertial N...

第十一届中国卫星导航年会

作者： Bowen Xing Haonan Jia Pengfei Liu Guoju Ma Xiaonan Li The 54th Research Institute of CETC State Key Laboratory of Satellite Navigation System and Equipment Technology

Under the background of mobile Internet era, the application requirements of indoor positioning technology is increasingly urgent,and accurate positioning information has become an important prerequis

关键词： inertial navigation autonomous positioning algorithm design hardware design