Yang Beibei, Zhao Yu, Sun Jinping, Han Kuoye, W. Yanping
Synthetic Aperture Radar(SAR) and Inverse Synthetic Aperture Radar(ISAR), which are capable of producing high-quality microwave images in all day, all night and under all weather conditions, have great potential in both civil and military applications. However, due to long development period and high cost of the whole SAR/ISAR system, it's very essential to develop a generalized test bed based on test& measurement instruments with characteristics of multi frequency, broad band, low cost, which is flexible and reconfigurable. Compared with air-borne and space-borne platforms, vehicle SAR/ISAR has the advantages of low cost, flexibility in both time and space, which can achieve high-resolution imaging of both stationary and moving targets. Due to its specific characteristics, it's necessary to carefully design the system parameters before real vehicle SAR/ISAR systems are developed. Based on a set of self-contained parameters, ISAR experiments of both cooperative and non-cooperative moving targets are carried out. The real data are processed with motion compensation and imaging algorithms to demonstrate system parameters' validity and system's imaging ability.
{"title":"System Design and Imaging Verification of an Experimental Vehicle SAR/ISAR Based on Test & Measurement Instruments","authors":"Yang Beibei, Zhao Yu, Sun Jinping, Han Kuoye, W. Yanping","doi":"10.1109/IMCCC.2013.20","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.20","url":null,"abstract":"Synthetic Aperture Radar(SAR) and Inverse Synthetic Aperture Radar(ISAR), which are capable of producing high-quality microwave images in all day, all night and under all weather conditions, have great potential in both civil and military applications. However, due to long development period and high cost of the whole SAR/ISAR system, it's very essential to develop a generalized test bed based on test& measurement instruments with characteristics of multi frequency, broad band, low cost, which is flexible and reconfigurable. Compared with air-borne and space-borne platforms, vehicle SAR/ISAR has the advantages of low cost, flexibility in both time and space, which can achieve high-resolution imaging of both stationary and moving targets. Due to its specific characteristics, it's necessary to carefully design the system parameters before real vehicle SAR/ISAR systems are developed. Based on a set of self-contained parameters, ISAR experiments of both cooperative and non-cooperative moving targets are carried out. The real data are processed with motion compensation and imaging algorithms to demonstrate system parameters' validity and system's imaging ability.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130158371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new coordinate system establishing method specific to all around space orientation are proposed in this paper. The error corresponding to the peak value of the error probability density of proposed arithmetic is much smaller than the traditional arithmetic even non line-of-sight measurement is not taken into account.
{"title":"A Coordinate System Establishing Method for All Around Space Orientation","authors":"Y. Miao, Jianwei Zhang, Ting Luo, Shanxing Zheng","doi":"10.1109/IMCCC.2013.100","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.100","url":null,"abstract":"A new coordinate system establishing method specific to all around space orientation are proposed in this paper. The error corresponding to the peak value of the error probability density of proposed arithmetic is much smaller than the traditional arithmetic even non line-of-sight measurement is not taken into account.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115978239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, for communication requirement of interconnecting units of transfer robot, design and implementation of robot communication are introduced, which mainly includes the design of the CAN open motion control master hardware communication circuit, the establishment of the node object dictionary and communication model. The test shows the efficiency and stability of the network.
{"title":"Design of STM32-Based CANopen Motion Control Master in Transfer Robot","authors":"Wang Li, Guo Lijin, L. Zheyuan","doi":"10.1109/IMCCC.2013.357","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.357","url":null,"abstract":"In this paper, for communication requirement of interconnecting units of transfer robot, design and implementation of robot communication are introduced, which mainly includes the design of the CAN open motion control master hardware communication circuit, the establishment of the node object dictionary and communication model. The test shows the efficiency and stability of the network.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116180188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A simplified direct torque control method is introduced in order to solve difficult situations in flux linkage observation and control of the direct torque control of brush less DC motor. This simplified direct torque control adopts a simplified structure without flux linkage observation and control. To calculate torque of motor in back electromotive force shape function method is simple and effective, which will help realization of the project. The system is simulated with MATLAB/SIMULINK. Results of the experiment show that this simplified method provides better limit to the torque ripple of brush less DC motor comparing with traditional direct torque control method and dynamic response becomes faster.
{"title":"A Kind of Simplified Structure Direct Torque Control Method for Brushless DC Motor","authors":"Pan Hai-peng, Gu Minming, Gu Junjie","doi":"10.1109/IMCCC.2013.330","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.330","url":null,"abstract":"A simplified direct torque control method is introduced in order to solve difficult situations in flux linkage observation and control of the direct torque control of brush less DC motor. This simplified direct torque control adopts a simplified structure without flux linkage observation and control. To calculate torque of motor in back electromotive force shape function method is simple and effective, which will help realization of the project. The system is simulated with MATLAB/SIMULINK. Results of the experiment show that this simplified method provides better limit to the torque ripple of brush less DC motor comparing with traditional direct torque control method and dynamic response becomes faster.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116404390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Schemes of demodulation for aircraft communications addressing and reporting system (ACARS) signal is presented in this paper. On the basis of in-depth study of the technology agreement about ACARS signal, the characteristic of ACARS signal is analyzed. A demodulation approach based on power spectrum estimation is described. According to the theoretical analysis, it can effectively restrain the white noise. At last the demodulation performance of this scheme is simulated with Monte Carlo method. Compared with the schemes of traditional non-coherent demodulation and differential demodulation, the spectrum estimation demodulation scheme has a lower BER, and its demodulation performance has been significantly improved, it has some practical application value.
{"title":"The Research of ACARS Signal Demodulation Method Based on Spectrum Estimation","authors":"Peng Zhang, Pei He","doi":"10.1109/IMCCC.2013.224","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.224","url":null,"abstract":"Schemes of demodulation for aircraft communications addressing and reporting system (ACARS) signal is presented in this paper. On the basis of in-depth study of the technology agreement about ACARS signal, the characteristic of ACARS signal is analyzed. A demodulation approach based on power spectrum estimation is described. According to the theoretical analysis, it can effectively restrain the white noise. At last the demodulation performance of this scheme is simulated with Monte Carlo method. Compared with the schemes of traditional non-coherent demodulation and differential demodulation, the spectrum estimation demodulation scheme has a lower BER, and its demodulation performance has been significantly improved, it has some practical application value.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127805741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Greenhouse control systems need to achieve three targets at the same time: low cost, high stability and the ability to implement complex control algorithm. Therefore, an automatic data acquisition and control system was designed based on RS-485 protocol in this paper. The system has three layers: the bottom layer consists of sensors and actuators, the middle layer is comprised of I/O nodes and the top layer is a main controller. An I/O node based on single chip microcomputer is responsible for executing commands of the main controller. The main controller based on ARM & Linux is in charge of scheduling of all commands. It controls temperature with hysteresis control algorithm. Firstly, the research status of hardware and topology structure was discussed, and their merits and drawbacks were found out. Secondly, an automatic data acquisition and control system was designed based on RS-485 protocol according to the needs of greenhouse control. Finally, the test process was analyzed and the running results were shown. This system was successfully used in our experimental greenhouse.
{"title":"The Design of Greenhouse Automatic Control System Based on RS-485 Protocol","authors":"Haoran Zhang, Lijun Chen, Kun Liu, S. Du","doi":"10.1109/IMCCC.2013.374","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.374","url":null,"abstract":"Greenhouse control systems need to achieve three targets at the same time: low cost, high stability and the ability to implement complex control algorithm. Therefore, an automatic data acquisition and control system was designed based on RS-485 protocol in this paper. The system has three layers: the bottom layer consists of sensors and actuators, the middle layer is comprised of I/O nodes and the top layer is a main controller. An I/O node based on single chip microcomputer is responsible for executing commands of the main controller. The main controller based on ARM & Linux is in charge of scheduling of all commands. It controls temperature with hysteresis control algorithm. Firstly, the research status of hardware and topology structure was discussed, and their merits and drawbacks were found out. Secondly, an automatic data acquisition and control system was designed based on RS-485 protocol according to the needs of greenhouse control. Finally, the test process was analyzed and the running results were shown. This system was successfully used in our experimental greenhouse.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127889741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents the design and realization of a large capacity airborne waveform recorder for UWB (ultra wide band) system based on FPGA and Flash array. The system has 80 MT29F64G08AJABA NAND Flash Memory chips and provides a total 640GB storage capacity. With ADC working at 100MHz, the storage time can be more than 100 minutes. For offline data analysis, the system provides a Gigabit interface to PC, and the data rate can reach 25MB/s. This device also can be applied in other measurement instruments and systems. The system structure, implementation and test results are described in detail.
{"title":"Large Capacity Airborne Waveform Recorder for UWB System Based on FPGA and Flash Array","authors":"Wang Xing, Mai Chaoyun, Wang Jun, Sun Jinping","doi":"10.1109/IMCCC.2013.291","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.291","url":null,"abstract":"This paper presents the design and realization of a large capacity airborne waveform recorder for UWB (ultra wide band) system based on FPGA and Flash array. The system has 80 MT29F64G08AJABA NAND Flash Memory chips and provides a total 640GB storage capacity. With ADC working at 100MHz, the storage time can be more than 100 minutes. For offline data analysis, the system provides a Gigabit interface to PC, and the data rate can reach 25MB/s. This device also can be applied in other measurement instruments and systems. The system structure, implementation and test results are described in detail.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128962260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, according to the refractive index of magnetic fluid variation relationship with temperature, the transmission characteristics of photonic crystal fiber (PCF) filled with the magnetic fluid (MF) were simulated and analyzed using the full-vector finite element method. The major researches were numerical simulation about the temperature affects on the mode field, transmission mode, the effective refractive index and loss of different air hole diameter PCF filled with MF under different wavelengths. The results show that the wavelength, the air hole diameter and the temperature have impacts on the transmission characteristics of the PCF filled with MF. And the longer the wavelength, the larger the diameter of the air hole, the transmission characteristic of the PCF is more significantly affected by temperature. When the temperature change from 20 to 80°C under the input wavelength at 1550nm, the PCF with the air hole diameter of d = 4.5μm, hole spacing Λ=5.6μm maintain the single-mode transmission, the effective refractive index decreases from 1.442451 to 1.441154, the effective mode area reduces from 32.333087μm2 to 28.276072μm2, and the confine loss increases from 37.553468dB/m to 38.103598dB/m (corresponding to the temperature of 25°C), and then decrease linearly to 27.501534dB/m.These characteristics provide the theoretical basis for the temperature controlling light field, and provide new methods, new ideas for temperature measurement and the reference for the design and applications of temperature modulation device based on PCF.
{"title":"The Impact of Temperature on the Transmission Characteristics of Photonic Crystal Fiber Filled Magnetic Fluid","authors":"Yong Zhao, Yuyan Zhang","doi":"10.1109/IMCCC.2013.150","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.150","url":null,"abstract":"In this paper, according to the refractive index of magnetic fluid variation relationship with temperature, the transmission characteristics of photonic crystal fiber (PCF) filled with the magnetic fluid (MF) were simulated and analyzed using the full-vector finite element method. The major researches were numerical simulation about the temperature affects on the mode field, transmission mode, the effective refractive index and loss of different air hole diameter PCF filled with MF under different wavelengths. The results show that the wavelength, the air hole diameter and the temperature have impacts on the transmission characteristics of the PCF filled with MF. And the longer the wavelength, the larger the diameter of the air hole, the transmission characteristic of the PCF is more significantly affected by temperature. When the temperature change from 20 to 80°C under the input wavelength at 1550nm, the PCF with the air hole diameter of d = 4.5μm, hole spacing Λ=5.6μm maintain the single-mode transmission, the effective refractive index decreases from 1.442451 to 1.441154, the effective mode area reduces from 32.333087μm2 to 28.276072μm2, and the confine loss increases from 37.553468dB/m to 38.103598dB/m (corresponding to the temperature of 25°C), and then decrease linearly to 27.501534dB/m.These characteristics provide the theoretical basis for the temperature controlling light field, and provide new methods, new ideas for temperature measurement and the reference for the design and applications of temperature modulation device based on PCF.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129110345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Pei, Yongqing Gong, Zhaoguo Su, Haowei Li, Guangtao Xu
The precision of the microstructure optical elements in the photolithography process will be inevitably affected by some errors, such as etching depth, etching width, alignment and lateral etching. Its performance will be decreased by this errors. Therefore, it's of high research value and practical significance to efficiently measure the surface morphology of microstructure optical elements. On the view of basic principle of interferometric system and improving the performance of the interferometer, the paper introduced the method of optimizing the original low performance laser interferometer and did contrast analysis to ensure the designed laser interferometer could satisfy the requirements of actual measurement.
{"title":"Study of Optimizing Design Based on Laser Interferometer for Optical Fiber End Face","authors":"Yang Pei, Yongqing Gong, Zhaoguo Su, Haowei Li, Guangtao Xu","doi":"10.1109/IMCCC.2013.56","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.56","url":null,"abstract":"The precision of the microstructure optical elements in the photolithography process will be inevitably affected by some errors, such as etching depth, etching width, alignment and lateral etching. Its performance will be decreased by this errors. Therefore, it's of high research value and practical significance to efficiently measure the surface morphology of microstructure optical elements. On the view of basic principle of interferometric system and improving the performance of the interferometer, the paper introduced the method of optimizing the original low performance laser interferometer and did contrast analysis to ensure the designed laser interferometer could satisfy the requirements of actual measurement.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132665150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper we discuss the ways to improve the accuracy of InfraScope Thermal Mapper. We demonstrate the theory about space resolution and how it influences the temperature measurement using InfraScope Thermal Mapper. Then a way to enhance the accuracy by choosing the space resolution adequately is presented. Some experiments are designed and the results prove the way is effective. Then we study on the basic structures and work procedures of this instrument, combining with theory analysis we conclude an efficient emissivity measurement method. Following which we can measure emissivity at a single temperature. Then we analyze errors brought in by this method in emissivity calculation procedure, deliberately propose ways to improve on the measurement accuracy. At last, we verify the improvement by precise experiments.
{"title":"Ways to Improve Temperature Measurement Accuracy of InfraScope Thermal Mapper","authors":"Zhai Yuwei, Liang Fa-guo, Zhen ShiQi, Wu Aihua, Qiao Yue","doi":"10.1109/IMCCC.2013.10","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.10","url":null,"abstract":"In this paper we discuss the ways to improve the accuracy of InfraScope Thermal Mapper. We demonstrate the theory about space resolution and how it influences the temperature measurement using InfraScope Thermal Mapper. Then a way to enhance the accuracy by choosing the space resolution adequately is presented. Some experiments are designed and the results prove the way is effective. Then we study on the basic structures and work procedures of this instrument, combining with theory analysis we conclude an efficient emissivity measurement method. Following which we can measure emissivity at a single temperature. Then we analyze errors brought in by this method in emissivity calculation procedure, deliberately propose ways to improve on the measurement accuracy. At last, we verify the improvement by precise experiments.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130512264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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