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2013 International Conference on Mechanical and Electronics engineering, ICMEE 2013

作者： Zhang, Ren Sun, Xue Guo, Xiao Yan Chen, Jie College of Information Engineering Tarim University Xinjiang alar 843300 China College of Measure-control Technology and Communication Engineering Harbin Univ.Sci.Tech Harbin 150080 China

ISBN: (纸本)9783037858103

The paper inctroduces the guide for the design of a portable instrument for straightness measurement of large machine tool. the measuring instrument is designed with two-quadrant photocell which is used as the position sensor, single-chip for the processor is MSP430F427 which have LCD driver circuit, the instrument is charged by lithium battery-powered. Its size is small, no external connection when it is used, data acquisition, processing and error displayed can be done in the part of light target. It have the advantage of convenience, simple and high measurement accuracy when it is used. © (2013) Trans Tech Publications, Switzerland.

关键词： Data acquisition

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The design of grading software system based on Bluetooth in android

The design of grading software system based on Bluetooth in ...

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International Forum on Strategic technology, IFOST

作者： Qin Yong Luo Hao Han Junhua Harbin University of Science and Technology/College of Measure-control Technology & Communication Engineering Harbin China

Grading software system for Bluetooth, breaking out limitation of one-to-one communication mechanism of Bluetooth in the android platform, using the method of the thread pool polling, realized real-time and one-to-many communication with Bluetooth in the android platform and the function of grading. Based on the android platform, the system was fully considered the scalability at the beginning of design. According to different application requirements, new features can be added in the form of increasing functional class. Taking the example of singing contest, this subject introduces how to grade with the Bluetooth in android and adds statistics, rankings and save functions.

关键词： Androids Humanoid robots Irrigation

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Development for equipment of the milk macromolecules content detection

Development for equipment of the milk macromolecules content...

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The 2013 3rd International Conference on Photonics and Image in Agriculture engineering (PIAGENG 2013)

作者： Guochao Ding Weimin Li Tingyi Shang Yang Xi Yunli Gao Zhen Zhou College of Measure-control Technology and Communication Engineering Harbin University of Science and Technology College of Information Technology Heilongjiang Bayi Agricultural University

ISBN: (纸本)9780819495594

Developed an experimental device for rapid and accurate detection of milk macromolecular content. This device developed based on laser scattered through principle, the principle use of the ingredients of the scattered light and transmitted light ratio characterization of macromolecules. Peristaltic pump to achieve automatic input and output of the milk samples, designing weak signal detection amplifier circuit for detecting the ratio with ICL7650. Real-time operating system μC / OS-II is the core design of the software part of the whole system. The experimental data prove that the device can achieve a fast real-time measurement of milk macromolecules.

关键词： Milk macromolecular the ratio of scatter-transmitted light weak signal detection protein content

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The rail length measurement circuit design based on the lock-in amplifier technology

The rail length measurement circuit design based on the lock...

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International Forum on Strategic technology, IFOST

作者： Liu Bo Shao Mingxin Chen Yue The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province College of Measure-Control Technology & Communication Engineering Harbin University of Science and Technology Harbin China

The paper studied the rail length measurement method, analyzed the sound waves attenuation in rails. The sound wave attenuated severely after traveling through the rail, so adopted the signal correlation principle of the lock-in amplifier to detect weak signal. Then completed the circuit design such as the acoustic emission circuit, the preamplifier circuit, the signal operation circuit of the digital lock-in amplifier and so on. The lock-in amplifier did correlation operation between the signals and completed the reference signal phase shift function by DSP and at last, detected the weak signals in noises.

关键词： Probes Rails Attenuation measurement Length measurement Circuit synthesis Field effect transistors Random access memory

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The real-time information scheduling method of industrial control network based on queuing theory

The real-time information scheduling method of industrial co...

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2013 2nd International Conference on measurement, Information and control, ICMIC 2013

作者： Zhang, Yuping Chen, Li Bing, Li Higher Educ. Key Lab. for Measuring and Contr. Technol. and Instrumentations of Heilongjiang Prov. College of Measure-Control Tech. Communication Engineer of Harbin University of Science and Technology Harbin 150080 China School of Electrical Engineering and Automation Harbin Institute of Technology Harbin 150001 China

ISBN: (纸本)9781479913923

The scheduling method of real-time information is one of the important factors which affect the real-time property of industrial control network. According to the generated characteristics of information in industrial real-time system, an arrival process which generated time spacing between adjacent information shall not be less than a constant has been presented. For the polling system, each node generates real-time information and non-real-time information, the concept of virtual node has been introduced. To apply the multiple vacations queuing theory, each virtual node has been as an M/G/1 queue system with multiple vacations, the real-time information scheduling method based on queuing theory has been presented (abbreviation: RSQT), and computational formula of real-time information waiting time has been deduced. Using MATLAB simulation experiments verify the influence of the information arrival rate to information transmission delay time, and giving theoretical reference for parameter optimization of RSQT method. Simulation results show that the information waiting time increases with the increase of information arrival rate. When information arrival rate increases to 9.5, the waiting time has increased by 8.53% than when information arrival rate is 5.0. When the system load is greater than 70%, the waiting time is increasing at a rate of about 73%. © 2013 IEEE.

关键词： Real time systems

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Recognition of layered structure using phase-frequency characteristics of rflected sound waves

Recognition of layered structure using phase-frequency chara...

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20th International Congress on Sound and Vibration 2013, ICSV 2013

作者： Wang, Shuozhong Qian, Zhenxing Wang, Luxian Feng, Guorui Chen, Yunfei Wang, Runtian Communication and Information Engineering Shanghai University Shanghai 200072 China Key Laboratory for Underwater Test and Control Technology Dalian 116013 China Shanghai Acoustics Laboratory Chinese Academy of Sciences Shanghai 200032 China

ISBN: (纸本)9781629931500

We propose a method for the classification of layered acoustic materials based on sound reflection characteristics. The plate is normally illuminated by a plane sound wave with sweeping frequencies, and the phase of the reflected wave is recorded at each frequency. The phase-frequency features are used to identify a structure among four possibilities. These are single layered, double-layered with harder/softer materials on its front/back and back/front sides respectively, and sandwich structure with a harder material as the outer layers and a softer material in the middle. Numerical simulation shows effectiveness of the method with a high rate of correct classification.

关键词： Numerical methods

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Design and Analysis of Parking Guidance System for Underground Intelligent Stereo Garage in Downtown Business District

Design and Analysis of Parking Guidance System for Undergrou...

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International Conference on Instrumentation, measurement, Computer, communication and control (IMCCC)

作者： Lijie Wang Jing Xu Hongyu Sun Yinpan Qu College of Measure-Control Technology and Communication Engineering The Higher Educational Key Laboratory on Measuring & Control Technology and Instrumentations of Heilongjiang Province Harbin China Delixi Electric Ltd. Wenzhou China

The basses of the intelligent measurement and control system used in underground stereo garage at the downtown business district were investigated. Firstly, the principal constituents for vehicle storage and the intelligent supervision systems were explored, the scheme involves the warehousing guidance, access mode and transmission system. Secondly, the modules of overrun detection and the parking place detection in the vehicle guidance system were successfully designed. Thirdly, three-dimensional information of the storage vehicle (i.e., length, width and height) and the position of the vehicle was collected by employing semiconductor lasers and peripheral circuits. STC89C52 Single-chip Microcomputer was adopted to improve the signal acquisition and control the voice prompt and light guide information and their output. Based on this information, the coding, debugging and testing of the control program were completed. The research of the parking vehicle storage intelligent guidance control at the downtown business district reduced the garage control cost, to a certain extent, and improved the cost-effective, which has an important significance for popularization and application of stereo garage.

关键词： Vehicles Artificial intelligence Semiconductor lasers Semiconductor device measurement measurement by laser beam Computers

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The research of power frequency interference in the acquisition system of SEMG

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2013年第5期6卷 79-88页

作者： Zhao, Hanqing You, Bo Liu, Yi Tao, Shoutong Collge of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin China Collge of Mechanical Engineering Heilongjiang Institute of Science and Technology Harbin China Collge of Automation Harbin University of Science and Technology Harbin China

The power frequency in 50Hz and its harmonic interference is one of the main noise sources during the acquisition process of surface electromyogram signals (SEMG), how to restrain interference power frequency and its harmonics effectively is one of the important issues on the EMG preprocessing. In this paper, we will determine the power frequency interference and its frequency of the harmonic through the signal acquisition, make the cross-correlation by the constructor and the collected data, and determine its magnitude. We can draw a conclusion that this method can effectively restrain power frequency interference of EMG during the acquisition process through the comparison of the power spectrum of de-noising before and after. The Experiments show that this method can effectively separate the power frequency interference during the acquisition process, and is suitable for the real-time processing of EMG. © 2013 SERSC.

关键词： Spectrum analysis

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Research on vehicle control strategy for electric variable transmission in HEV

Research on vehicle control strategy for electric variable t...

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International Conference on Electrical Machines and Systems (ICEMS)

作者： Qiwei Xu Jianing Xu Dewen Tian System Security and New Technology Chongqing University China School of Measure-Control Tech. & Communication Engineering Harbin University of Science and Technology China China North Vehicle Research Institute China

ISBN: (纸本)9781479914456

This paper focused on the vehicle control strategy for electric variable transmission in hybrid electric vehicle. The operation modes of hybrid electric vehicle based on electric variable transmission were analyzed, and the vehicle control strategy based on the logic thresholds was proposed, according to the power requirement, current vehicle speed, and SOC of battery. Then, the simulation model of hybrid electric vehicle based on electric variable transmission was built, and the simulation results demonstrate the feasibility of the proposed strategy.

关键词： Ice Batteries Hybrid electric vehicles Torque System-on-chip Generators

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Power control Algorithm of Cognitive Radio Based on Non-Cooperative Game Theory

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China communications 2013年第11期10卷 143-154页

作者：赵军辉杨涛贡毅王娇付雷 School of Electronics and Information Engineering Beijing Jiaotong University State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Key Laboratory of Wireless Sensor Network and Communication Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences Department of Electrical and Electronic Engineering South University of Science and Technology of China

This paper addresses the power con- trol problems of Cognitive Radio （CR） trader transmission power and interference tempera- ture constraints. First, we propose the interfer- ence constraint which ensures that the Quality of Service （QoS） standards for primary users is considered and a non-cooperative game power control model. Based on the proposed model, we developed a logical utility function based on the Signal-to-Interference-Noise Ratio （S/NR） and a novel algorithm network power control. that is suitable for CR Then, the existence and uniqueness of the Nash Equilibrium （NE） in our utility function are proved by the principle of game theory and the corresponding optimi- zations. Compared to traditional algorithms, the proposed one could converge to an NE in 3-5 iterative operations by setting an appropriate pricing factor. Finally, simulation results ver- ified the stability and superiority of the novel algorithm in flat-fading channel environments.

关键词： cognitive radio non-cooperativepower control game theory utility function Na-sh equilibrium target power

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