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Distributed Compressive Sensing for Wireless Sensor Networks

Distributed Compressive Sensing for Wireless Sensor Networks

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Sun Xinyao Wang Xue Wang Sheng Bi Daowei (State Key Laboratory of Precision Measurement Technology,Tsinghua University,Beijing 100084 China)

In industrial applications of wireless sensor networks （WSNs）,due to the constraints of limited bandwidth and power, it is not easy to transmit vibration signals in a real-time manner. To address this problem,compressive sensing is exploited to perform vibration signal compression with low computational complexity,which reduces volume of transmitted data and increase transmission efficiency and real-time performance. The fundamentals of compressive sensing enabled signal communication include exploring the inherent sparsity of vibration signals in the frequency domain,compressing the signal with a random Gaussian sampling matrix,and reconstructing the original signal by L norm optimization.A distributed computing paradigm is also proposed to improve the performance of reconstruction by fusing the information of multiple sensor *** show that the proposed distributed compressive sensing enabled signal communication can decrease computational load,improve real-time performance and satisfy the constraints,making it a promising technology for communication in WSNs.

关键词： Wireless sensor networks compressive sensing sparsity Gaussian random matrix

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Comparative study on Finite Element Analysis of entire machine tool

Comparative study on Finite Element Analysis of entire machi...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Hu Dongfang~(1,2) Li Yan~1 Shang Jiandong ~2 Wang Yujin ~2 (1 Xi'an University of Technology,Xi'an 710048 China. 2 He'nan University of Science and Technology,Luoyang 471003 China)

The traditional method used on analysis of entire machine tool structure is limited by computer computation *** only considers the single part of the whole machine tool but not the connection relation of contact friction,bolt and screw between *** method reflects the deformation status under external load of machine tool but introduces obvious difference between research result and practical result. The entire machine tool structure analysis method is based on the machine assemble relation and close to the actual working conditions which gets more reliable analysis *** analysis methods are analyzed theoretically in this paper and compared based on experimental data which proves that the entire machine tool structure analysis method based on the machine assemble relation has feasibility and reliability.

关键词： Finite element analysis machine tool comparative analysis measurement.

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Technological Innovation of Modern Instrument Manufacturing

Technological Innovation of Modern Instrument Manufacturing

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Wu Guoxin~1 Xu Xiaoli~1 Shi Yanhui~2 ZuoYunbo~1 (1.Key Laboratory of Modern Measurement & Control Technology(Ministry of Education),Beijing Information Science & Technology University,Beijing 100192,China 2.Department of Information Arts,Beijing Business School,Beijing 102209,China)

With the scientific and technological development and human society progress,the manufacturing technology innovation ability has become increasingly *** governments,academia,or businesses are very concerned about the improvement of manufacturing technology innovation *** that the modern instrument manufacture has a high-tech,multi-variety and small-batch characteristics,this paper analyzes the cause for low innovation capacity of China's current-stage modern instrument manufacturing technology, and explores new ways to improve the above-said innovation *** response to the bottleneck in modern instrument manufacturing,it proposes the use of technological innovation mode based on flexible R&D system,and creates a compatible, extensible,scalable and open flexible development platform system,in order to improve the instrument manufacturing innovation ability.

关键词： modern instrument manufacturing technology technological innovation dynamic role

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Update and Prolong Life Method for Valuable Imported Instruments behind the Times

Update and Prolong Life Method for Valuable Imported Instrum...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Hu Jianren Qin Huibin (Hangzhou Dianzi University,Hangzhou 310037,China)

To discuss IT update method that valuable or large-scale precision instruments behind the *** is extending cache size,raising bus frequency besides the common method with larger RAM size and updating Operation System. It is exceeding the best performance at the max frequency with the main board system;even it is achieving the next important advanced kind of CPU,by the greatest difference between CPU core frequency and printing *** raises the system speed nearly 3 *** gets good performance such as 3～5 times of former without changing the box and board with comprehension technology and all steps benefit to *** prolongs the life of import instrument falling into disuse period,and gets good effect by import integrative optics-mechanics-electricity *** make use of the max difference of core and PR frequency to get extreme system speed by selecting the different CPU kinds and at the highest speed on the instrument board. Update BIOS selects hardware ***,mini new motherboard replaces whole old IT *** is adapt to OS update, link to large files such as MATLAB,*** extends the memory size by soldering RAM ICs on the PCB.

关键词： valuable/large-scale instrument hardware update exceeding design performance core frequency printing frequency bus frequency cache size RAM size maintain motherboard

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Realization on the Calibration technology of Additive Constant and Multiplication Constant of Total Station Instrument based on the baseline comparison method

Realization on the Calibration technology of Additive Consta...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Yuan Jinjun~1 Deng Xiangrui~2 He Cheng~1 Feng Zhongke~1 Tang Xuehai~1 Guo Weiwei~1 Yan Fei~1 Gong Yinxi~1 (1.Institute of GIS RS & GPS,Beijing Forestry University,Beijing 100083 2.Length division,China National Institute of Metrology,Beijing,100013)

This article discussed the calibration technology of total station base on the baseline comparison method that adjustment function model was established taking advanced of difference between baseline standard values and average values of corrected observations of the 21 baselines though which additive constant and multiplication constant of tested Total Station was soluted *** statistic t and t of additive constant and multiplication constant of tested Total Station was constructed using principle of mathematical statistics and by the result of which compared with t values at the cindition of significant difference（α=0.05） and degrees of freedom（r = 19）,whether additive constant and multiplication constant of the tested total station is significant was decided,then calculation model of additive constant and multiplication constant was *** results show the calibration technology of total station base on the baseline comparison method Is a reasonable and Appliable approach.

关键词： Baseline comparison method the calibration of theodolite significance test additive constant and multiplication constant

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Early Crack Quick Detection of Large Vibrating Screen Beam Based on Vibration Test and MMMT

Early Crack Quick Detection of Large Vibrating Screen Beam B...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Xue Guanghui~1 Zhao Guorui~1 Zhu Shigang~(1,2) Zhang Dongjin~(1,3) WuMiao~1 (1.School of Mechanical Electronic & Information Engineering,China University of Mining and Technology (Beijing),Beijing 100083 China 2.Datong China coal export coal base construction co.,Ltd.,Datong 037003 China 3.Shanxi Fenxi Shuguang coal industry co.,Ltd.,Lingshi 31302 China)

The abrupt fracture of vibrating screen lower beam would make the whole coal preparation product line shutting down and result in large economic *** this paper,the evolution law between the transfer function of vibrating screen lower beam and the emergence and growth of the crack is researched,and a quick detection method is proposed based on the technical method of metal magnetic memory test(MMMT). The experimentation and spot application results show that the method is efficient,and it could achieve the early crack fault quick detection of vibrating screen lower *** application could decrease and even avoid the lower beam abrupt fracture occurrence of the vibrating screen.

关键词： Metal magnetic memory testing vibrating screen lower beam early crack detection

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Design of Collimated LED Spot Location System

Design of Collimated LED Spot Location System

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Lv Yong~(1,2) Feng Qibo~1 Niu Yue~2 Liu Lishuang~(2,3) Liu Pengfei~2 (1.School of Science,Beijing Jiaotong University,Beijing 100044,China 2.School of Photoelectronic Information & Communication Engineering,Beijing Information Science & Technology University,Beijing 100192 China 3.Key Laboratory of Modern Measurement & Control Technology(Beijing Information Science & Technology University),Ministry of Education,Beijing 100192 China)

The collimated laser diode(LD) is often used as the benchmark in the optical measuring *** it is difficult to overcome the drift in a long-term process,we design a collimated LED spot location *** light from the LED is converged by the lens and coupled into the fiber,then comes out from the *** spot image is captured by the CCD camera and the position of the spot is located by the centroid *** test is taken between the system we designed and the tailor-made collimated LD light source location system in *** result shows that the collimated LED spot location system we designed drifts much lower than LD system. It is more stable and can be used as the benchmark in the high-precision optical measurement.

关键词： measurement collimated LED light source laser diode(LD) light spot drift CCD camera

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微波开放型介质谐振器介电参数的测试

微波开放型介质谐振器介电参数的测试

引用

第三届全国信息获取与处理学术会议

作者：陈赐海骆超艺黄振宇肖芬厦门大学物理系厦门大学物理系厦门大学物理系厦门大学物理系

讨论了平行板开放型介质谐振器技术,建立自动化测试系统,实现对高介低损的微波陶瓷材料复介电常数高效测量。结果表明,该系统测试精度较高、重复性好,样品制作简单,可满足微波介质陶资材料测量的实际需要。

关键词：介电参数介质谐振器变分法自动化测试

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