2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)最新文献_第9页

Study on Ultrasonic power response sensitivity of the PVDF pyroelectric sensor PVDF热释电传感器超声功率响应灵敏度的研究

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101816

S. Liming, Cao Yonggang, Wang Yue-bing, Zheng Hui-feng

{"title":"Study on Ultrasonic power response sensitivity of the PVDF pyroelectric sensor","authors":"S. Liming, Cao Yonggang, Wang Yue-bing, Zheng Hui-feng","doi":"10.1109/ICEMI46757.2019.9101816","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101816","url":null,"abstract":"The previous studies have demonstrated that the PVDF pyroelectric sensor has good effects on acoustic power measurement. As a sensor, the accuracy of the measurement results is directly related to the performance of the sensor. One of the most important performance indicators is the sensitivity of the sensor. In this study, the ultrasonic power response sensitivity of the PVDF pyroelectric sensor was defined. To study the sensitivity of the sensor, the finite element method based on the physical model of the PVDF pyroelectric sensor was used to analyze the relationship between the amplitude of output pyroelectric voltage and the acoustic power. Besides that, a large size PVDF pyroelectric sensor was used for the detection of the different acoustic power. Finally, the measurement and simulation results were compared. It is found that the amplitude of output pyroelectric voltage is basically linear with the radiated acoustic power. According to the calculation, the theoretical value of the ultrasonic power response sensitivity is 0. 1606mV/W, the simulation value is 0.1608 mV/W, and the experimental value is 0.1414 mV/W. These three values are basically equal. The study shows that the ultrasonic power response sensitivity of the PVDF pyroelectric sensor is reasonable and feasible. It provides some help for the performance study of the PVDF pyroelectric sensor and indicates the potential to measure high-intensity acoustic power.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"147 Pt 6 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":"126311210","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}

引用次数: 1

Dynamic optimization of laser inter-satellite link network topology based on genetic algorithm 基于遗传算法的激光星间链路网络拓扑动态优化

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101521

Wang Chengzhuo, Liu Suyang, Guo Xiye, Yang Jun

{"title":"Dynamic optimization of laser inter-satellite link network topology based on genetic algorithm","authors":"Wang Chengzhuo, Liu Suyang, Guo Xiye, Yang Jun","doi":"10.1109/ICEMI46757.2019.9101521","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101521","url":null,"abstract":"This paper studies the network topology dynamic problem of the laser inter-satellite link in the navigation constellation. Since the reestablishment time of the laser inter-satellite link is relatively long, this paper envisages that multiple laser intersatellite links reestablish links at the same time when the network topology changes. Therefore, it is necessary to maintain certain performance during the change. The inter-satellite link of the navigation constellation needs to balance the communication and the inter-satellite orbit determination performance. This paper proposes the link transmission cost based on the inter-satellite link distance and the amount of data transmitted on the link to measure the communication performance of the inter-satellite link, and the position dilution of precision to measure the performance of the orbit determination. In this paper, a multi-objective optimization model is established, aiming to improve the performance of the communication and inter-satellite orbit determination. The model used genetic algorithm to solve the problem. The simulation results have shown that the inter-satellite link network topology witnessed an obvious improvement in both the communication performance and the orbit determination performance, and has good communication performance when network changes.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"72 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":"127801381","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}

引用次数: 5

Curve fitting and piecewise linear method for Z-type temperature sensor z型温度传感器的曲线拟合与分段线性方法

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101410

Jiang Dong, Zhao Liping, Zhao Yanchao, Wang Deyu

引用次数: 1

Switch open-circuit faults diagnosis of inverter based on wavelet and support vector machine 基于小波和支持向量机的逆变器开关开路故障诊断

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101567

Cui Bowen, Tian Wei

引用次数: 6

Operation of compact cryocooled 2V programmable josephson voltage standard at NIM 操作紧凑的冷冻2V可编程约瑟夫森电压标准在NIM

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101440

Wang Zengmin, L. Honghui, He Qing, Qu Jifeng, Gao Yuan

引用次数: 0

Life prediction of fan bearings for traction motors of EMU based on RecurDyn 基于RecurDyn的动车组牵引电机风扇轴承寿命预测

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101590

Zhang Haifeng, C. Kai, Wang Jian, Wang Xin, Liu Changying

引用次数: 0

Design and simulation of DC current comparator demodulation circuit 直流电流比较器解调电路的设计与仿真

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101824

Zhou Liren, Pan Yang, Zhu Li

引用次数: 4

(250-600) kv re-filtering narrow-spectrum x-ray half-value layer measurement method (250-600) kv再滤波窄谱x射线半值层测量法

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101411

Ren Guoyue, Wu Jinjie, Wang Bo, Bai Zhanguo

{"title":"(250-600) kv re-filtering narrow-spectrum x-ray half-value layer measurement method","authors":"Ren Guoyue, Wu Jinjie, Wang Bo, Bai Zhanguo","doi":"10.1109/ICEMI46757.2019.9101411","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101411","url":null,"abstract":"In this paper, we mainly study the measurement problem of the half-value layer of the narrow-spectrum (250-600) kV X-ray re-filtering narrow-band, and use the experimental and simulation methods to obtain the half-value layer of the high-energy segment re-filtering narrow spectrum. The half-value layer is one of the important parameter characteristics describing the radiation quality. Therefore, measuring the half-value layer plays an important role in the establishment of the radiation quality. The corresponding specification is not given in the additional filter ISO with a tube voltage greater than 300 kV. The method for determining the additional filter thickness used for the tube voltage greater than 300 kV is to linearly fit the relationship between the tube voltage and the additional filter in ISO, and then calculate the thickness value of the additional filter after 300 kV according to the fitted formula. After determining the thickness value, the corresponding energy spectrum is simulated by Monte Carlo simulation. The energy spectrum simulated by Monte Carlo is compared with the theoretical energy spectrum given in ISO-4037. The results show that the average energy and simulation of N250ISO are obtained. The average energy relative deviation is 0.38%, and the N300 average energy relative deviation is 0.35%. The average energy is within 5% in accordance with ISO specifications. The half-value layer of the narrow spectrum can be re-filtered by the experimental (250-600) kV X-ray by the corresponding method given in ISO.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"59 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":"131530119","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}

引用次数: 0

A distributed ensemble bpnn used for status assessment of circuit breakers based on coil current characteristics 基于线圈电流特性的断路器状态评估的分布式集成bpnn

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101482

Zhao Ke, Liu Yujie, T. Ming, Yang Jinggang, Wang Jian

{"title":"A distributed ensemble bpnn used for status assessment of circuit breakers based on coil current characteristics","authors":"Zhao Ke, Liu Yujie, T. Ming, Yang Jinggang, Wang Jian","doi":"10.1109/ICEMI46757.2019.9101482","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101482","url":null,"abstract":"The switching coil of circuit breaker operating mechanism has many current characteristics and it can reflect the potential failure state. By analyzing these characteristics, the state of circuit breaker can be evaluated reasonably. However, unbalanced class data, large data volume, and poor classification efficacy are the problems that conventional classification methods must face to. This paper presents a distributed ensemble back propagation neural network (DE-BPNN) method to evaluate circuit breaker state based on coil current characteristics. Firstly, the coil current data are de-noised by wavelet packet with db5 and 9 characteristic parameters are extracted. In order to deal with imbalanced class data, the SMOTE method is adopted to ensure that training samples are the same volume. And it also provides a differential sample extraction method to segment training samples. Then, by building multiple differentiated subset BPNN, the voting strategy is used to generate the final results. Finally, DE-BPNN algorithm is deployed on the distributed large data computing platform Spark to reduce the computation time. Two classification algorithms such as K-means and standalone BPNN are used to compare classification accuracy and efficiency with DE-BPNN. The experimental results show that DE-BPNN has high classification accuracy with the unbalanced training data volume. In addition, the computation time of DE-BPNN keeps stable with the increase of data quantity.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"38 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":"131551056","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}

引用次数: 0

An accurate maximum likelihood location method based on UWB platform 一种基于超宽带平台的精确最大似然定位方法

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI: 10.1109/ICEMI46757.2019.9101442

Luo Qinghua, Liu Sicheng, Yang Yipeng, Ju Chunyu, Yan Xiaozhen

{"title":"An accurate maximum likelihood location method based on UWB platform","authors":"Luo Qinghua, Liu Sicheng, Yang Yipeng, Ju Chunyu, Yan Xiaozhen","doi":"10.1109/ICEMI46757.2019.9101442","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101442","url":null,"abstract":"Ultra Wideband (UWB)-based platform is a system which is suitable for high precision distance estimation and localization. A localization algorithm based on UWB platform can gain high accuracy of distance estimation and localization. Among localization methods, the maximum likelihood (MLL) is a simple and accurate location algorithm, which can meet the requirements of location algorithm based on UWB platform. In this paper, a method of maximum likelihood estimation based on outlier detection and UWB platform is studied. Firstly, we analyzed the principle of the UWB-based distance estimation and MLL localization algorithm. Then, the algorithm was verified by simulation analysis of localization accuracy and efficiency. Finally, indoor and outdoor localization experiments were carried out to compare and analyze the localization accuracy of the three localization algorithms in different environments, and the conclusions were drawn. The experimental results demonstrated that MLL has the highest accuracy in indoor and outdoor environments compared with LS and trilateration methods, and it is suitable localization algorithm for UWB localization.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"435 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":"134317575","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}

引用次数: 1