Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101697
Guo Siming, Wu Jinjie, Zhang Jian, Li Mengshi, Hou Dongjie, Wang Ji, Zhai Yudan
A fluorescence X-rays radiation device is established. The device is mainly composed of X-rays machine, fluorescent radiator, secondary filter and beam-limiting diaphragm. It can generate monochromatic X-rays with 8 energy points below 100 keV. The flux is about 106 photon/s. An HPGe detector for X-rays energy spectrum measurement were calibrated using standard radioactive sources, and the relationship between energy and channel was obtained. The Monte Carlo simulation software was used to simulate the detector detection efficiency curve. The primary and secondary radiant energy spectra of the fluorescent radiation device were measured using the HPGe detector, and the fluence rate and energy resolution of the radiation device at different energies were obtained.
{"title":"Energy spectra measurement of fluorescence X-rays radiation","authors":"Guo Siming, Wu Jinjie, Zhang Jian, Li Mengshi, Hou Dongjie, Wang Ji, Zhai Yudan","doi":"10.1109/ICEMI46757.2019.9101697","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101697","url":null,"abstract":"A fluorescence X-rays radiation device is established. The device is mainly composed of X-rays machine, fluorescent radiator, secondary filter and beam-limiting diaphragm. It can generate monochromatic X-rays with 8 energy points below 100 keV. The flux is about 106 photon/s. An HPGe detector for X-rays energy spectrum measurement were calibrated using standard radioactive sources, and the relationship between energy and channel was obtained. The Monte Carlo simulation software was used to simulate the detector detection efficiency curve. The primary and secondary radiant energy spectra of the fluorescent radiation device were measured using the HPGe detector, and the fluence rate and energy resolution of the radiation device at different energies were obtained.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128882769","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101476
Q. Honglei, Jin Xiaoqin, Cong Li, Yao Jintao
Ground-wave and cycle identification is significant technology of Loran-C signal processing. Due to fast attenuation of the Loran-C signal in inland areas and small difference between sky-wave delay and ground-wave delay, ground-wave and cycle identification cannot be carried out well by the methods of general optimized envelope correlation and peak detection. To address this problem, a method based on Multipath Estimation Delay Lock Loop (MEDLL) is proposed to perform ground-wave and cycle identification for Loran-C signal. The algorithm computes measured correlation function by optimal Loran-C envelope and extracts estimated delay value of ground-wave by MEDLL. Moreover, all the pulse signals in two complementary cycles (16 in total) are used to obtain 16 cycle identification results, respectively, and the result with highest confidence is selected as final identification output. Results demonstrate that the proposed method identifies the ground-wave and cycle of Loran-C signal accurately when sky-wave delay is 30$mu$s more than ground-wave delay, which meet the performance requirements of Loran-C receiver in wide inland areas. The method is robust to environmental noise and sky-wave interference.
{"title":"MEDLL-based method of ground-wave and cycle identification for Loran-C signal","authors":"Q. Honglei, Jin Xiaoqin, Cong Li, Yao Jintao","doi":"10.1109/ICEMI46757.2019.9101476","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101476","url":null,"abstract":"Ground-wave and cycle identification is significant technology of Loran-C signal processing. Due to fast attenuation of the Loran-C signal in inland areas and small difference between sky-wave delay and ground-wave delay, ground-wave and cycle identification cannot be carried out well by the methods of general optimized envelope correlation and peak detection. To address this problem, a method based on Multipath Estimation Delay Lock Loop (MEDLL) is proposed to perform ground-wave and cycle identification for Loran-C signal. The algorithm computes measured correlation function by optimal Loran-C envelope and extracts estimated delay value of ground-wave by MEDLL. Moreover, all the pulse signals in two complementary cycles (16 in total) are used to obtain 16 cycle identification results, respectively, and the result with highest confidence is selected as final identification output. Results demonstrate that the proposed method identifies the ground-wave and cycle of Loran-C signal accurately when sky-wave delay is 30$mu$s more than ground-wave delay, which meet the performance requirements of Loran-C receiver in wide inland areas. The method is robust to environmental noise and sky-wave interference.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128885041","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101680
Miao Yuanyuan, Zhang Lijie, Zhou Xuejing
In order to improve the fault tolerance and the running speed of BeiDou/SINS tightly-coupled integrated navigation algorithm, a BeiDou/SINS tightly-coupled navigation algorithm base on federated squared-root cubature Kalman (SRCKF) is proposed in this paper. The square root of the error covariance matrix is used to ensure the non-negative nature of the matrix in SRCKF, which avoids the divergence of the filtering result in CKF. The federated SRCKF filter is designed to fuse the attitude information, pseudorange information and pseudorange rate information from accelerometer, gyroscope, magnetic sensor and BeiDou satellite navigation receiver. Fault tolerance of the federated filter is better than that of the centralized filter. The simulation results show that the real-time performance of the proposed algorithm is better than the centralized SRCKF under the premise of ensuring navigation accuracy.
{"title":"BeiDou/SINS tightly-coupled integrated navigation algorithm based on federated squared-root CKF","authors":"Miao Yuanyuan, Zhang Lijie, Zhou Xuejing","doi":"10.1109/ICEMI46757.2019.9101680","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101680","url":null,"abstract":"In order to improve the fault tolerance and the running speed of BeiDou/SINS tightly-coupled integrated navigation algorithm, a BeiDou/SINS tightly-coupled navigation algorithm base on federated squared-root cubature Kalman (SRCKF) is proposed in this paper. The square root of the error covariance matrix is used to ensure the non-negative nature of the matrix in SRCKF, which avoids the divergence of the filtering result in CKF. The federated SRCKF filter is designed to fuse the attitude information, pseudorange information and pseudorange rate information from accelerometer, gyroscope, magnetic sensor and BeiDou satellite navigation receiver. Fault tolerance of the federated filter is better than that of the centralized filter. The simulation results show that the real-time performance of the proposed algorithm is better than the centralized SRCKF under the premise of ensuring navigation accuracy.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121897480","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101605
Zeng Hao, Tian Yu, Lianping Guo, Xihong Gao, Ye Peng
The complex electromagnetic environment today places a greater demand on the bandwidth and dynamic range of electronic measuring devices. In the case where the dynamic range of a high-speed ADC is limited, the same signal is amplified with different gains through multiple channels, and the signal is sampled synchronously by multiple ADCs, and then, the undistorted data frames with the largest magnification factor are selected by frame from multiple sampled data for restoration and merging (reconstruction) to improve the dynamic range of the signal acquisition and the real-time performance of sampling. In this paper, the working principle and key technologies of an analog channel for a broadband high-dynamic acquisition system are described in detail, and the relevant design indicators are tested and verified. The results show that the analog channel finally achieves the technical indicators including 300MHz bandwidth and 90dB input dynamic range.
{"title":"Design of an analog channel for broadband high-dynamic acquisition system","authors":"Zeng Hao, Tian Yu, Lianping Guo, Xihong Gao, Ye Peng","doi":"10.1109/ICEMI46757.2019.9101605","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101605","url":null,"abstract":"The complex electromagnetic environment today places a greater demand on the bandwidth and dynamic range of electronic measuring devices. In the case where the dynamic range of a high-speed ADC is limited, the same signal is amplified with different gains through multiple channels, and the signal is sampled synchronously by multiple ADCs, and then, the undistorted data frames with the largest magnification factor are selected by frame from multiple sampled data for restoration and merging (reconstruction) to improve the dynamic range of the signal acquisition and the real-time performance of sampling. In this paper, the working principle and key technologies of an analog channel for a broadband high-dynamic acquisition system are described in detail, and the relevant design indicators are tested and verified. The results show that the analog channel finally achieves the technical indicators including 300MHz bandwidth and 90dB input dynamic range.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115926458","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101769
Jiang Hongna, J. Hongwei, Bai Zhongfei
Nowaday airborne wired sensor system exists many actual problem, complex cable, poor flexibility, high cost, increasing the weight of aircraft, poor maintainability, difficult isolation for the fault and so on. So we need to find new wireless and intelligent measuring means to meet the demand of modern flight test. Based on the research of the intelligent airborne wireless sensor network technology, we break through some pivotal technology such as airborne wireless sensor network structure design, the data synchronization acquisition techniques, the anti-interference design and network node energy supply technologies. Eventually we develop airborne wireless sensor network application strategy in the flight test and provide theoretical support for the practical application.
{"title":"The application strategy for intelligent wireless sensor network in flight test","authors":"Jiang Hongna, J. Hongwei, Bai Zhongfei","doi":"10.1109/ICEMI46757.2019.9101769","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101769","url":null,"abstract":"Nowaday airborne wired sensor system exists many actual problem, complex cable, poor flexibility, high cost, increasing the weight of aircraft, poor maintainability, difficult isolation for the fault and so on. So we need to find new wireless and intelligent measuring means to meet the demand of modern flight test. Based on the research of the intelligent airborne wireless sensor network technology, we break through some pivotal technology such as airborne wireless sensor network structure design, the data synchronization acquisition techniques, the anti-interference design and network node energy supply technologies. Eventually we develop airborne wireless sensor network application strategy in the flight test and provide theoretical support for the practical application.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122759135","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101538
Li Lingmei, Lu Ruijun, Lin YuanYao, Liu Hongguang
The hand-held laser distance meter is a small, light, non-contact instrument, widely used in various measurement fields. It is based on the laser ranging theory. This paper would introduce the hand-held laser distance meter and its principle. And as a high standard metrology instrument, this paper would also discuss its verification and uncertainty analysis.
{"title":"Principle and verification of hand-held laser distance meter","authors":"Li Lingmei, Lu Ruijun, Lin YuanYao, Liu Hongguang","doi":"10.1109/ICEMI46757.2019.9101538","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101538","url":null,"abstract":"The hand-held laser distance meter is a small, light, non-contact instrument, widely used in various measurement fields. It is based on the laser ranging theory. This paper would introduce the hand-held laser distance meter and its principle. And as a high standard metrology instrument, this paper would also discuss its verification and uncertainty analysis.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116530092","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101461
Zhang Zhiqiang, Yu Lei, Wang Yunling
Error Vector Magnitude (EVM) is the most important parameter of modulation quality of wireless digital signal. At present, there are some shortcomings in the calibration process as follows: 1) Lack of vector signal generator that can accurately set the required EVM value of the standard signal, so when calibrating the vector signal analyzer, only the measurement points near the zero modulation error are calibrated. 2) Closed-loop inspection between instruments, using vector signal analyzer and vector signal generator to calibrate the EVM in a closed-loop way. According to the calculation formula of error vector magnitude on digital modulation signal from the vector signal generator, the setting value of I/Q amplitude imbalance and signal-to-noise ratio at a given EVM value of the ZigBee signal are calculated, in the meantime the vector signal analysis software built in the N9030A is used to measure the EVM of the ZigBee signal. The result shows good consistency. At the end of the article, the traceability of adjustments on I/Q amplitude imbalance and signal-to-noise ratio is introduced.
{"title":"Implement and traceability of adjustable EVM on ZigBee signal from vector signal generator","authors":"Zhang Zhiqiang, Yu Lei, Wang Yunling","doi":"10.1109/ICEMI46757.2019.9101461","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101461","url":null,"abstract":"Error Vector Magnitude (EVM) is the most important parameter of modulation quality of wireless digital signal. At present, there are some shortcomings in the calibration process as follows: 1) Lack of vector signal generator that can accurately set the required EVM value of the standard signal, so when calibrating the vector signal analyzer, only the measurement points near the zero modulation error are calibrated. 2) Closed-loop inspection between instruments, using vector signal analyzer and vector signal generator to calibrate the EVM in a closed-loop way. According to the calculation formula of error vector magnitude on digital modulation signal from the vector signal generator, the setting value of I/Q amplitude imbalance and signal-to-noise ratio at a given EVM value of the ZigBee signal are calculated, in the meantime the vector signal analysis software built in the N9030A is used to measure the EVM of the ZigBee signal. The result shows good consistency. At the end of the article, the traceability of adjustments on I/Q amplitude imbalance and signal-to-noise ratio is introduced.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127018698","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101501
Yang Wanyu, Zhao Yijiu, Yu Zhonghao, Liu Dan
With the rapid development of electronic science and technology, the signal frequency that engineers need to measure becomes higher and higher. Limited by the analog-to-digital converter (ADC) sampling rate and Nyquist sampling theorem, the digital oscilloscope can only measure waveform in a very limited range of frequency in real-time sampling mode. Therefore, it is necessary to introduce an equivalent sampling technique to increase the ability of the oscilloscope to measure higher frequency signals. In this paper, a random equivalent sampling reconstruction method based on field programmable gate array (FPGA) is proposed. In the random equivalent sampling mode, multiple sets of samples collected by the ADC are buffered in the FPGA, and the stretched circuit measures the time interval $Delta$t between each set of trigger signals and the rising edge of the first sampling clock. Through these samples as well as the $Delta$t in each group, the waveform can be reconstructed in FPGA, and then this reconstructed waveform can be read and displayed by the upper computer. The waveform refreshing rate of the random equivalent sampling can be greatly improved by this kind of reconstruction inside a FPGA.
{"title":"Design of random equivalent sampling control module based on FPGA","authors":"Yang Wanyu, Zhao Yijiu, Yu Zhonghao, Liu Dan","doi":"10.1109/ICEMI46757.2019.9101501","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101501","url":null,"abstract":"With the rapid development of electronic science and technology, the signal frequency that engineers need to measure becomes higher and higher. Limited by the analog-to-digital converter (ADC) sampling rate and Nyquist sampling theorem, the digital oscilloscope can only measure waveform in a very limited range of frequency in real-time sampling mode. Therefore, it is necessary to introduce an equivalent sampling technique to increase the ability of the oscilloscope to measure higher frequency signals. In this paper, a random equivalent sampling reconstruction method based on field programmable gate array (FPGA) is proposed. In the random equivalent sampling mode, multiple sets of samples collected by the ADC are buffered in the FPGA, and the stretched circuit measures the time interval $Delta$t between each set of trigger signals and the rising edge of the first sampling clock. Through these samples as well as the $Delta$t in each group, the waveform can be reconstructed in FPGA, and then this reconstructed waveform can be read and displayed by the upper computer. The waveform refreshing rate of the random equivalent sampling can be greatly improved by this kind of reconstruction inside a FPGA.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127057452","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101869
Jiang Xiaochang, Wu Jie
The analog front end circuit is an important part of the digital storage oscilloscope. This paper designs a wide band, low noise and high input impedance analog front end circuit. It includes high impedance buffer, single-ended-to-differential conversion, DC offset adjustment, variable gain amplifier and low noise power modules. We used a high-impedance passive probe with this circuit to perform a deep performance test, which contains time and frequency domain. The test results show that it can be well matched with general probe. The front end system has good performance. The bandwidth reaches about 500 MHz and the noise floor RMS voltage is 5.1 mV. The bandwidth and noise floor can meet the GSPS sampling rate and 8-bit vertical resolution digital oscilloscope requirements.
{"title":"An analog front end design for GSPS oscilloscope","authors":"Jiang Xiaochang, Wu Jie","doi":"10.1109/ICEMI46757.2019.9101869","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101869","url":null,"abstract":"The analog front end circuit is an important part of the digital storage oscilloscope. This paper designs a wide band, low noise and high input impedance analog front end circuit. It includes high impedance buffer, single-ended-to-differential conversion, DC offset adjustment, variable gain amplifier and low noise power modules. We used a high-impedance passive probe with this circuit to perform a deep performance test, which contains time and frequency domain. The test results show that it can be well matched with general probe. The front end system has good performance. The bandwidth reaches about 500 MHz and the noise floor RMS voltage is 5.1 mV. The bandwidth and noise floor can meet the GSPS sampling rate and 8-bit vertical resolution digital oscilloscope requirements.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127084582","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}
Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101646
Chang Qi, Meng Yao, Liu Jun, Yang Weixi
Impact damage location research is one of the main problems of structural health monitoring. Real-time monitoring of impact damage on structures is highly necessary. In order to improve the accuracy of impact localization and the efficiency of sensor utilization, this paper proposes a two-dimensional beam focus impact localization algorithm based on cross array sensor arrangement. The number of sensors required for the conventional localization method is effectively reduced without losing the localization accuracy. Through the cross array piezoelectric sensor arrangement, the localization accuracy of the outer field can be greatly improved. In order to enhance the localization accuracy for the field between the sensors (inner field), this paper uses the four-point arc localization method to locate the impact in the inner field. So the localization of the impact of the entire board can be fulfilled with a highly improved accuracy. The effectiveness and practicability of the method are verified through the experimental research.
{"title":"Research on impact location algorithm based on two-dimensional beam focusing method","authors":"Chang Qi, Meng Yao, Liu Jun, Yang Weixi","doi":"10.1109/ICEMI46757.2019.9101646","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101646","url":null,"abstract":"Impact damage location research is one of the main problems of structural health monitoring. Real-time monitoring of impact damage on structures is highly necessary. In order to improve the accuracy of impact localization and the efficiency of sensor utilization, this paper proposes a two-dimensional beam focus impact localization algorithm based on cross array sensor arrangement. The number of sensors required for the conventional localization method is effectively reduced without losing the localization accuracy. Through the cross array piezoelectric sensor arrangement, the localization accuracy of the outer field can be greatly improved. In order to enhance the localization accuracy for the field between the sensors (inner field), this paper uses the four-point arc localization method to locate the impact in the inner field. So the localization of the impact of the entire board can be fulfilled with a highly improved accuracy. The effectiveness and practicability of the method are verified through the experimental research.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126198569","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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