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8th International Forum on Strategic technology, 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 technology, 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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Test data compression scheme based on compatible data block coding

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Information technology 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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Low frequency digitally programmable universal filter for communication system

Low frequency digitally programmable universal filter for co...

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International Conference on Signal Processing and Integrated Networks (SPIN)

作者： Devesh Singh Neelofer Afzal Divya Asija Sachin Kumar Yadav Department of Electronics and Communication AKG Engineering College Ghaziabad Uttar Pradesh India Department of Electronics Jamia Millia Islamia University New Delhi India Department of Elecctrical & Electronics Amity School of Engg. & Technology Noida Uttar Pradesh India Department of Instrumentation and Control Engg. Netaji Subhas Institute of Technology New Delhi India

This paper presents a low frequency digitally programmable voltage mode universal filter for modern communication systems. It employs four digitally programmable second generation current conveyors (DPCCII), two grounded capacitor and five resistors. The proposed circuit offers the features such as realization of all the standard filter functions from same configuration, independent digital control of filter parameters, no component matching constraint and low sensitivity figure. SPICE simulation results are demonstrated to confirm the theoretical analysis.

关键词： Programming CMOS integrated circuits Band-pass filters Digital filters Digital control Matched filters

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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

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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On-demand routing algorithm base on energy balancing in MANET

On-demand routing algorithm base on energy balancing in MANE...

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2013 International Conference on Vehicle and Mechanical engineering and Information technology, VMEIT 2013

作者： Chen, Hui Ju, Yong Feng School of Electronic and Control Engineering Chang'An University Shaanxi Xi'an 710043 China Shaanxi College of Communication Technology Shaanxi Xi'an 710018 China

ISBN: (纸本)9783037858202

A MANET is an autonomous infrastructure's network system of mobile hosts which are connected with each other via wireless links. The traditional routing protocol for wireless MANET is unable to achieve balanced energy consumption and could not adapt to the dynamic topology changes well. A novel on-demand algorithm is proposed based on energy balancing and LMST algorithm. The proposed algorithm excludes the unstable links in routing discovery, and allows the node with more energy forward the routing request packet preferentially. The simulation experiments demonstrate, comparing with the LMST algorithm, the algorithm increases the average life time, decreases the average transmission power, and achieves energy balancing in the network and prolong the life-span of the network, which shows the proposed algorithm is highly practical. © (2013) Trans Tech Publications, Switzerland.

关键词： Energy balance

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An ID-based short group signature scheme

Journal of Software

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Journal of Software 2013年第3期8卷 554-559页

作者： Chen, Xiangguo Zhou, Shaojie Guo, Lifeng Yu, Jia Ma, Huiran School of Information Engineering Qingdao University Qingdao 266071 China College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150040 China School of Computer and Information Technology Shanxi University Taiyuan 030006 China

A new ID-based group signature scheme, in which group managers and group members are all ID-based, is presented in this paper. Our scheme is obtained by using a new way to the construction of group signature schemes and based on an ID-based signature scheme from bilinear pairing. Due to the nice and simple constructive method and the sound properties of bilinear pairing, it is shown that the proposed scheme is very simple and practical and has the advantages of concurrent join, immediate revocation, easy tracing and short signature length. The security analysis is also under the formal security notion of an ID-based group signature scheme. © 2013 ACADEMY PUBLISHER.

关键词： Authentication

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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 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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International Forum on Strategic technology, IFOST

作者： Liu Bo Deng Huiyuan Feng Zhichao Fu Jibao Hu Yi The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province College of Measure-Control Technology & Communication Engineer Harbin University of Science and Technology Harbin China

关键词： Voltage measurement measurement uncertainty Instruments DH-HEMTs Magnetic circuits Differential amplifiers Optical fiber amplifiers

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