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International Forum on Strategic tech.ology, IFOST

作者： Juan Wu Zhen Zhou Guochao Ding Huiying Liu College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin China Heilongjiang Electric Power Research Institute Harbin China

The conventional Mie-scattering calculation has been widely used for spherical particles existed in a vacuum and homogeneous nonabsorbing medium. The paper investigates the radiative properties of particles existed in absorbing medium, including light absorption, extinction efficiencies, scattering efficiencies and so on. This study presents milk fat globule in ethyl acetate solution (EAS) and monoethanolamine (MEA) solution including their complex refractive index. The complex refractive index of milk fat globules at 20 °C was measured at 633 nm and was calculated to be 1.46+0.000005i, the complex refractive of EAS was measured at 633nm and was separately calculated to be 1.476 + 0.0005583169i. We considered the calculation difference of the efficiency factors by comparing results from inherent efficiencies and apparent efficiencies of milk fat globule in absorbing medium by simulation in MATALAB. By simulation it is proved that the light scattering by globules is affected by absorbing medium, so modifying Mie scattering calculation is necessary.

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The design of anti-aliasing analog filter for data acquisition in the surface measurement

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2014年第5期7卷 169-176页

作者： Xu, Jingbo Xu, Xiaohong Yang, Pengyu Lin, Haijun Guo, Xin College of Measure-control Technology and Communication Engineering Harbin University of Science and Technology Harbin China The higher educational key laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province Harbin China Department of Textile Engineering Shazhou Professional Institute of Technology Zhangjiagang China Harbin Railway Company Harbin Railway Administration Harbin China

In the surface measurement system, the data acquisition is key part and the anti-aliasing analog filter is necessary. This paper deals with the design of the anti-aliasing analog filter. Based on the principle of anti-aliasing filtering, the parameters of filter are computed, the filter circuit is designed, and the frequency characteristic is drawn. Combined with digital filter, the filtering can maintain the low frequency components very well and suppress effectively the high frequency signals in the original surface profile, which reduces the distortion caused by noise and makes the filtering effect better. This method has been applied in the surface measurement system and the actually measured data verified the performance of the filter. © 2014 SERSC.

关键词： Anti-aliasing

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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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8th International Forum on Strategic tech.ology, IFOST 2013

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

ISBN: (纸本)9781479909315

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. © 2013 IEEE.

关键词： Bluetooth

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The rail length measurement circuit design based on the lock-in amplifier tech.ology

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

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8th International Forum on Strategic tech.ology, IFOST 2013

作者： Bo, Liu Mingxin, Shao Yue, Chen Higher Educ. Key Lab. for Measuring and Contr. Technol. College of Measure-Control Tech. Communication Engineer of Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781479909315

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. Keyword-weak signal length measurement lock-in amplifier. © 2013 IEEE.

关键词： Integrated circuit manufacture

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The design of signal processing circuit of precision inductive sensor in portable instrument

The design of signal processing circuit of precision inducti...

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8th International Forum on Strategic tech.ology, IFOST 2013

作者： Bo, Liu Huiyuan, Deng Zhichao, Feng Jibao, Fu Yi, Hu Higher Educ. Key Lab. for Measuring and Contr. Technol. College of Measure-Control Tech. Communication Engineer of Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781479909315

In order to improve the detecting sensitivity of inductive sensor and system signal-to-noise ratio, Wien bridge sine wave oscillator circuit with low distortion for excitation signal and weak signal processing circuit is designed. Transformer is used to block the part of DC in carrier signal for improving the detection sensitivity of the system. The structure of circuit is simple, practical and reliable. Experimental results showed that circuit system can effectively improve the signal-to-noise ratio and the noise of system. © 2013 IEEE.

关键词： Differential amplifiers

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The design of a portable instrument for straightness measurement of large machine tool

The design of a portable instrument for straightness measure...

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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 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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Design of automatic shifting controller for electric vehicle with five speed transmission

Design of automatic shifting controller for electric vehicle...

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8th International Forum on Strategic tech.ology, IFOST 2013

作者： Jingbo, Xu Xiaohong, Xu Xin, Su Xin, Guo College of Measure-control Technology and Communication Engineering Harbin University of Science and Technology Harbin China Higher Educational Key Laboratory for Measuring Control Technology and Instrumentations of Heilongjiang Province Harbin China Department of Textile Engineering Shazhou Professional Institute of Technology Zhangjiagang China

ISBN: (纸本)9781479909315

On the basis of the motor controller dedicated for electric vehicle, the vehicle realizes automatic transmission, through development of the automatic shift controller. The function of gear-selection and gear-shifting is implemented through air cylinder and shifting fork driven by electromagnetic valve. The MeU detects the vehicle speed, the motor rotating speed, the gear position, the accelerator position and the motor current, adjusts the motor rotating speed and controls the electromagnetic valves. The algorithm of speed tracking adjusts the motor speed accurately and rapidly, and provides guarantee for the dynamic shift. According to vehicle and motor running status, the two-parameter shift schedule combined with the current parameter, improves the motor efficiency and makes the shifting process more smoothly. © 2013 IEEE.

关键词： Electric vehicles

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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 tech.ology, 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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Test data compression scheme based on compatible data block coding

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Information tech.ology Journal 2013年第1期12卷 204-208页

作者： Shang, Jin Zhang, Liyong College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150080 China School of Electrical and Information Engineering Heilongjiang Institute of Technology Harbin 150050 China

In order to reduce the storage requirements for the test pattern, a test data compression scheme based on compatible data block coding is presented. In the scheme, binary code is used to express the test data which are compatible or inversely compatible with reference data which are improved compression radio. The circuit structure of decompression with a Finite State Machine (FSM) and a Cyclical Scan Register (CSR) was proposed. Experimental results for the large ISCAS 89 benchmark circuits show that this scheme is a very efficient compression method than other compression schemes and the average compression ratio of up to 63.89%.

关键词： System-on-chip

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