Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679603
Shengwei Meng, Li Ma
The infrared small target detection system has important strategic application value in the military and national defense fields. Therefore, it is necessary to conduct sufficient simulation tests to ensure its performance during the research and development process of the infrared small target detection system. Due to the sensitivity of the data, there are few publicly available test image data sources containing small infrared targets, but a large amount of test data is indispensable for the study of small infrared target detection algorithms. In response to the above problems, this paper will develop a test platform for the infrared small target detection system. A Camera Link module with FMC interface is designed for the platform. The test platform can generate a simulated image data source that can be used for the detection of small infrared targets. In simulated image data transmission, the Camera Link module is employed. In order to improve the communication performance, PCIe interface is employed. It can also send complete test data to the data received by the detection result.
{"title":"Test and Evaluation for Infrared Small Target Detection System","authors":"Shengwei Meng, Li Ma","doi":"10.1109/ICEMI52946.2021.9679603","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679603","url":null,"abstract":"The infrared small target detection system has important strategic application value in the military and national defense fields. Therefore, it is necessary to conduct sufficient simulation tests to ensure its performance during the research and development process of the infrared small target detection system. Due to the sensitivity of the data, there are few publicly available test image data sources containing small infrared targets, but a large amount of test data is indispensable for the study of small infrared target detection algorithms. In response to the above problems, this paper will develop a test platform for the infrared small target detection system. A Camera Link module with FMC interface is designed for the platform. The test platform can generate a simulated image data source that can be used for the detection of small infrared targets. In simulated image data transmission, the Camera Link module is employed. In order to improve the communication performance, PCIe interface is employed. It can also send complete test data to the data received by the detection result.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116857766","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679653
Yijia Hao, Yang Xu, Huan Wang, Zhiliang Liu
Deep learning has demonstrated great vitality in various fields in recent years. However, most deep learning models lack kernel size selection capability and feature importance distinction mechanism. Although there have been studies that have considered using the channel attention mechanism to help the automatic selection of kernel size, few researchers have used the spatial attention mechanism to recalibrate the choice of kernel size. Therefore, in this paper, a selective kernel network, based on joint attention mechanism (SKNJA), is proposed for the first time to further improve the ability of the kernel size selection for the convolutional neural network. The network incorporates the newly designed selective-kernel joint attention module (SKJAM), which consists of a series connection of selective-kernel channel attention module (SKCAM) and selective-kernel spatial attention module (SKSAM). Both SKCAM and SKSAM use two parallel branches with different kernel sizes. The SKNJA is applied in the field of mechanical fault diagnosis. The Case Western Reserve University bearing dataset is used to validate the proposed model. Experiment results indicate that the SKSAM can enhance fault-related kernel size automatically. And it can be further improved by integrating SKCAM. Compared with four advanced deep learning methods, the SKNJA performs best in the bearing fault diagnosis task.
{"title":"Selective Kernel Network based on Joint Attention Mechanism for Rolling Bearing Fault Diagnosis","authors":"Yijia Hao, Yang Xu, Huan Wang, Zhiliang Liu","doi":"10.1109/ICEMI52946.2021.9679653","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679653","url":null,"abstract":"Deep learning has demonstrated great vitality in various fields in recent years. However, most deep learning models lack kernel size selection capability and feature importance distinction mechanism. Although there have been studies that have considered using the channel attention mechanism to help the automatic selection of kernel size, few researchers have used the spatial attention mechanism to recalibrate the choice of kernel size. Therefore, in this paper, a selective kernel network, based on joint attention mechanism (SKNJA), is proposed for the first time to further improve the ability of the kernel size selection for the convolutional neural network. The network incorporates the newly designed selective-kernel joint attention module (SKJAM), which consists of a series connection of selective-kernel channel attention module (SKCAM) and selective-kernel spatial attention module (SKSAM). Both SKCAM and SKSAM use two parallel branches with different kernel sizes. The SKNJA is applied in the field of mechanical fault diagnosis. The Case Western Reserve University bearing dataset is used to validate the proposed model. Experiment results indicate that the SKSAM can enhance fault-related kernel size automatically. And it can be further improved by integrating SKCAM. Compared with four advanced deep learning methods, the SKNJA performs best in the bearing fault diagnosis task.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126259711","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679618
Xirui Li, Ao Feng, Yong Cai, Jianyu Qi
Hydrogen Maser is a sort of stable frequency sources which can be served as the primary frequency standard. When investigating the working mechanism of a H-Maser, evidences can be found that its internal resonance cavity has significant influences on the long-term stability performance of the H-Maser. More specifically speaking, the center frequency of the cavity changes when the temperature fluctuation exists, and therefore the output frequency of the H-Maser would change accordingly. The long-term stability performance of the H-Maser would get worse due to the environmental temperature fluctuation. In order to improve the long-term stability of the H-Maser, the improvements on the precision of the cavity thermal control is of importance. This article introduces a high-precision temperature control system based on ADRC's improved PID algorithm. The system uses WRB2405 as a voltage regulator chip, a thermistor as a temperature sensing element, a double-stranded manganese copper wire with an inner diameter of 0.32 mm as a heating wire, and a half-bridge circuit composed of MOSFETs to drive the heating wire for heating. In the regulated circuit, the chip WRB2405 regulated the +24V DC voltage into a +5V DC voltage with a ripple lower than ±1mv, which ensures the accuracy of the subsequent chip power supply. In the temperature measurement circuit, a high-precision reference voltage chip is used ADR4525 supplies power to the unbalanced bridge, and the two pins of the 24-bit ADC measurement chip are connected to both ends of the balanced bridge, so that the A/D conversion result depends only on the change of the thermistor resistance with temperature; In the circuit, a half-bridge circuit composed of two N-channel MOSFET power tubes realizes the control of the heating wire. In the temperature measurement process, the STM32 processor uses median filtering and sliding window filtering successively according to the A/D sampling value, combined with polynomial fitting, and performs real-time calculation to obtain the final temperature measurement result. The experimental results show that the temperature control system can keep the temperature of the hydrogen maser within ±0.001°C when the ambient temperature does not change more than ±1°C.
{"title":"Research on Digital Cavity Thermal Control Techniques for Performance Improvements of Hydrogen Masers","authors":"Xirui Li, Ao Feng, Yong Cai, Jianyu Qi","doi":"10.1109/ICEMI52946.2021.9679618","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679618","url":null,"abstract":"Hydrogen Maser is a sort of stable frequency sources which can be served as the primary frequency standard. When investigating the working mechanism of a H-Maser, evidences can be found that its internal resonance cavity has significant influences on the long-term stability performance of the H-Maser. More specifically speaking, the center frequency of the cavity changes when the temperature fluctuation exists, and therefore the output frequency of the H-Maser would change accordingly. The long-term stability performance of the H-Maser would get worse due to the environmental temperature fluctuation. In order to improve the long-term stability of the H-Maser, the improvements on the precision of the cavity thermal control is of importance. This article introduces a high-precision temperature control system based on ADRC's improved PID algorithm. The system uses WRB2405 as a voltage regulator chip, a thermistor as a temperature sensing element, a double-stranded manganese copper wire with an inner diameter of 0.32 mm as a heating wire, and a half-bridge circuit composed of MOSFETs to drive the heating wire for heating. In the regulated circuit, the chip WRB2405 regulated the +24V DC voltage into a +5V DC voltage with a ripple lower than ±1mv, which ensures the accuracy of the subsequent chip power supply. In the temperature measurement circuit, a high-precision reference voltage chip is used ADR4525 supplies power to the unbalanced bridge, and the two pins of the 24-bit ADC measurement chip are connected to both ends of the balanced bridge, so that the A/D conversion result depends only on the change of the thermistor resistance with temperature; In the circuit, a half-bridge circuit composed of two N-channel MOSFET power tubes realizes the control of the heating wire. In the temperature measurement process, the STM32 processor uses median filtering and sliding window filtering successively according to the A/D sampling value, combined with polynomial fitting, and performs real-time calculation to obtain the final temperature measurement result. The experimental results show that the temperature control system can keep the temperature of the hydrogen maser within ±0.001°C when the ambient temperature does not change more than ±1°C.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"104 49","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120825651","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679535
Zhuoyan Gao, Yan Jia, Shuyi Liu, Xiangkun Zhang
The efficient and accurate monitoring means of high-speed railway bridge is vital important to maintain the safe operation of high-speed railway. In this paper, a ground-based SFCW interferometry radar system based on vector network analyzer (VNA) is built. The control computer is connected to the VNA through a LAN port to remotely control the VNA to transmit and receive stepped frequency continuous wave (SFCW) signals through two standard gain horn antennas. The experiment is carried out on a 32m simply supported box girder of the Yancheng-Nantong high-speed railway in Nantong City, China. During the experiment, the high-speed railway inspection vehicle was used as the dynamic load and accelerated step by step from 300km/h to 385km/h. The radar system accurately measured the dynamic deflection of the bridge at different speeds and calculated dynamic factor through signal processing. The results show that the simulation results are consistent with the measured results which proves the accuracy and effectiveness of ground-based SFCW interferometry radar in the application of monitoring high-speed railway bridge.
{"title":"Micro-displacement Measurement of High-Speed Railway Bridge Based on Vector Network Analyzer","authors":"Zhuoyan Gao, Yan Jia, Shuyi Liu, Xiangkun Zhang","doi":"10.1109/ICEMI52946.2021.9679535","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679535","url":null,"abstract":"The efficient and accurate monitoring means of high-speed railway bridge is vital important to maintain the safe operation of high-speed railway. In this paper, a ground-based SFCW interferometry radar system based on vector network analyzer (VNA) is built. The control computer is connected to the VNA through a LAN port to remotely control the VNA to transmit and receive stepped frequency continuous wave (SFCW) signals through two standard gain horn antennas. The experiment is carried out on a 32m simply supported box girder of the Yancheng-Nantong high-speed railway in Nantong City, China. During the experiment, the high-speed railway inspection vehicle was used as the dynamic load and accelerated step by step from 300km/h to 385km/h. The radar system accurately measured the dynamic deflection of the bridge at different speeds and calculated dynamic factor through signal processing. The results show that the simulation results are consistent with the measured results which proves the accuracy and effectiveness of ground-based SFCW interferometry radar in the application of monitoring high-speed railway bridge.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559088","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679644
Libin Chen, Laiping Wu, Qiangyi Du, Liu Yang, Jianxin Sun, Chao Xu
To get better anti-jamming ability, the emission signal and array calibration signal of the Frequency Synthesizer need to work in pulse mode. To achieve miniaturization and function integration, the ability to generate FSK signals and PSK signals is also needed. To realize the real-time control, the network interface is selected as the medium. The features above make it impossible to measure the Frequency Synthesizer relying on test equipments at this stage. An automatic test system (ATS) based on PXI & LXI hybrid architecture is designed as a solution. Trigger distribution module is created to establish the synchronous measurement mechanism between the ATS and the Frequency Synthesizer. Network communication module is produced, which could send control commands to the Frequency Synthesizer and store fault monitoring information. The test methods of transmission power, spur rejection and harmonic rejection are realized based on zero-span mode and time-gate mode respectively. The FSK signal is demodulated by the sliding FFT method, and the PSK signal is demodulated by the Costas loop method. The accuracy and effectiveness of the test methods are verified through practical application. Besides, on the premise that temperature changes and response nonuniformity are included in the test results, the maximum deviation of transmission power is ±0.175dB within 100 discrete measurements, which could demonstrate the stability of the ATS.
{"title":"Design of ATS for Frequency Synthesizer and Research on Test Methods","authors":"Libin Chen, Laiping Wu, Qiangyi Du, Liu Yang, Jianxin Sun, Chao Xu","doi":"10.1109/ICEMI52946.2021.9679644","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679644","url":null,"abstract":"To get better anti-jamming ability, the emission signal and array calibration signal of the Frequency Synthesizer need to work in pulse mode. To achieve miniaturization and function integration, the ability to generate FSK signals and PSK signals is also needed. To realize the real-time control, the network interface is selected as the medium. The features above make it impossible to measure the Frequency Synthesizer relying on test equipments at this stage. An automatic test system (ATS) based on PXI & LXI hybrid architecture is designed as a solution. Trigger distribution module is created to establish the synchronous measurement mechanism between the ATS and the Frequency Synthesizer. Network communication module is produced, which could send control commands to the Frequency Synthesizer and store fault monitoring information. The test methods of transmission power, spur rejection and harmonic rejection are realized based on zero-span mode and time-gate mode respectively. The FSK signal is demodulated by the sliding FFT method, and the PSK signal is demodulated by the Costas loop method. The accuracy and effectiveness of the test methods are verified through practical application. Besides, on the premise that temperature changes and response nonuniformity are included in the test results, the maximum deviation of transmission power is ±0.175dB within 100 discrete measurements, which could demonstrate the stability of the ATS.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115681111","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679624
Wenjian Zhou, Peng Wang, Y. Deng, Gen Qiu, Yifan Wang, Xiaoyu Yang
As one of the important power devices to guarantee the stability of AC power supply, the failure rate of aluminum electrolytic capacitor in AC power supply is as high as 60%. Therefore, in view of the problems that aluminum electrolytic capacitor in AC power supply is easy to fail and on-line monitoring is difficult, the on-line monitoring method of DC-Link capacitor in high-power AC power supply is studied. In this paper, the equivalent series resistance (ESR) was selected as the characteristic parameter of the degradation failure of aluminum electrolytic capacitor, and then the online monitoring method of the current state ESR value of aluminum electrolytic capacitor in operation was studied. Then, an online ESR monitoring model is designed to study the loss power of aluminum electrolytic capacitor. Through real-time monitoring of the ripple voltage and ripple current of the busbar capacitance, the ESR value of the current state is obtained. Finally, simulation and online monitoring experiments are used to verify the effectiveness of the scheme, and the relative error of monitoring results is less than 1%, and good monitoring effect is obtained.
{"title":"Research on On-line Monitoring Technology of Aluminum Electrolytic Capacitor in AC Power Supply","authors":"Wenjian Zhou, Peng Wang, Y. Deng, Gen Qiu, Yifan Wang, Xiaoyu Yang","doi":"10.1109/ICEMI52946.2021.9679624","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679624","url":null,"abstract":"As one of the important power devices to guarantee the stability of AC power supply, the failure rate of aluminum electrolytic capacitor in AC power supply is as high as 60%. Therefore, in view of the problems that aluminum electrolytic capacitor in AC power supply is easy to fail and on-line monitoring is difficult, the on-line monitoring method of DC-Link capacitor in high-power AC power supply is studied. In this paper, the equivalent series resistance (ESR) was selected as the characteristic parameter of the degradation failure of aluminum electrolytic capacitor, and then the online monitoring method of the current state ESR value of aluminum electrolytic capacitor in operation was studied. Then, an online ESR monitoring model is designed to study the loss power of aluminum electrolytic capacitor. Through real-time monitoring of the ripple voltage and ripple current of the busbar capacitance, the ESR value of the current state is obtained. Finally, simulation and online monitoring experiments are used to verify the effectiveness of the scheme, and the relative error of monitoring results is less than 1%, and good monitoring effect is obtained.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129638815","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679538
Yunling Wang, Qing Cai, Jie Xu
The A-GNSS terminal Over-The-Air (OTA) test system is a system for OTA performance of terminals that support A-GNSS. Terminals supporting A-GNSS can search for satellite navigation signals quicker than terminals only supporting GNSS. Active test is to measure the radiant power and receiving sensitivity of terminal over the air in a microwave anechoic chamber, which displays radiation performance of whole terminal obviously. Many test plans for OTA have been released, and among them the most recognized one is released by CITA. The instruments are mainly provided by Spirent and R&S. This paper introduces test plans, test situation of network operators and test institutions, compares 2 solutions provided by Spirit and R&S, describes test procedures, and simulates sensitivity test process.
a - gnss终端OTA (over - air)测试系统是对支持a - gnss的终端进行OTA性能测试的系统。支持A-GNSS的终端可以比只支持GNSS的终端更快地搜索到卫星导航信号。主动测试是在微波消声室中测量终端在空中的辐射功率和接收灵敏度，可以明显地显示整个终端的辐射性能。已经发布了很多OTA的测试计划，其中最受认可的是CITA发布的测试计划。乐器主要由思博伦和R&S公司提供。介绍了网络运营商和测试机构的测试计划、测试情况，比较了Spirit和R&S提供的两种解决方案，描述了测试过程，模拟了灵敏度测试过程。
{"title":"Study on A-GNSS Terminal Over-The-Air Test System","authors":"Yunling Wang, Qing Cai, Jie Xu","doi":"10.1109/ICEMI52946.2021.9679538","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679538","url":null,"abstract":"The A-GNSS terminal Over-The-Air (OTA) test system is a system for OTA performance of terminals that support A-GNSS. Terminals supporting A-GNSS can search for satellite navigation signals quicker than terminals only supporting GNSS. Active test is to measure the radiant power and receiving sensitivity of terminal over the air in a microwave anechoic chamber, which displays radiation performance of whole terminal obviously. Many test plans for OTA have been released, and among them the most recognized one is released by CITA. The instruments are mainly provided by Spirent and R&S. This paper introduces test plans, test situation of network operators and test institutions, compares 2 solutions provided by Spirit and R&S, describes test procedures, and simulates sensitivity test process.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129858806","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, a 5-pulse current is used to conduct an impact experiment on ZnO varistor. The impact resistance and surface temperature rise characteristics of different types of varistors are studied to explore the influence of multi-pulse current heating on the aging of varistors. Using experimental data, the impact life distribution and damage patterns of ZnO varistors are analyzed. Varistor types have a great influence on impact resistance, which are closely related to internal uniformity. The non-uniformity of the ZnO varistor will affect the energy absorption capacity. The worse the non-uniformity of the varistor, the worse the ability to absorb energy, and the worse the impact resistance.
{"title":"Study on the Influence of Thermal Effect of Multi-Pulse Lightning Current on the Aging Characteristics of ZnO Varistor","authors":"Chunlong Zhang, Xiucheng Yi, Chunying Li, Yubao Xu, Hongyan Xing","doi":"10.1109/ICEMI52946.2021.9679633","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679633","url":null,"abstract":"In this paper, a 5-pulse current is used to conduct an impact experiment on ZnO varistor. The impact resistance and surface temperature rise characteristics of different types of varistors are studied to explore the influence of multi-pulse current heating on the aging of varistors. Using experimental data, the impact life distribution and damage patterns of ZnO varistors are analyzed. Varistor types have a great influence on impact resistance, which are closely related to internal uniformity. The non-uniformity of the ZnO varistor will affect the energy absorption capacity. The worse the non-uniformity of the varistor, the worse the ability to absorb energy, and the worse the impact resistance.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125296491","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}
Hyperspectral image can provide valuable information for resource development, environment protection, national defense construction, etc. As one key technique for processing hyperspectral image, the anomaly detection can discover the region of interest, which is the direct information for the following analysis. However, how to identify the anomalous target or zone contained in the hyperspectral image is always a difficult problem. Especially, the accuracy of anomaly detection is usually low. Some useful information may be missed, and the following action cannot be implemented in time. To address this issue, this article proposes a novel anomaly detection method for processing hyperspectral image. Firstly, the collaborated representation-based anomaly detector (CRD) for hyperspectral image is studied. The influence factor on the anomaly detection accuracy is determined. Then, a weighted method is proposed to decrease the false alarm of anomaly detection result. To be specific, the weights are generated by the reconstruction errors of the under test hyperspectral image with a stacked autoencoder network. In this way, the performance of the anomaly detection algorithm is enhanced. Two real hyperspectral image datasets are utilized to evaluate the proposed method. Experimental results show that different Lagrange multiplier values have influence on the anomaly detection results. The receiver operating characteristic curve is used as one metric for evaluating anomaly detection results. The proposed method outperforms the collaborated representation AD and the benchmark detector-local Reed Xiaoli AD (RXD). The proposed method provides a novel anomaly detection strategy for the practical application of hyperspectral image.
{"title":"A Weighted Collaborated Representation Anomaly Detector for Hyperspectral Image","authors":"Ning Ma, Qi Liu, Wenbo Wu, Q. He, Liansheng Liu, Yu Peng","doi":"10.1109/ICEMI52946.2021.9679619","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679619","url":null,"abstract":"Hyperspectral image can provide valuable information for resource development, environment protection, national defense construction, etc. As one key technique for processing hyperspectral image, the anomaly detection can discover the region of interest, which is the direct information for the following analysis. However, how to identify the anomalous target or zone contained in the hyperspectral image is always a difficult problem. Especially, the accuracy of anomaly detection is usually low. Some useful information may be missed, and the following action cannot be implemented in time. To address this issue, this article proposes a novel anomaly detection method for processing hyperspectral image. Firstly, the collaborated representation-based anomaly detector (CRD) for hyperspectral image is studied. The influence factor on the anomaly detection accuracy is determined. Then, a weighted method is proposed to decrease the false alarm of anomaly detection result. To be specific, the weights are generated by the reconstruction errors of the under test hyperspectral image with a stacked autoencoder network. In this way, the performance of the anomaly detection algorithm is enhanced. Two real hyperspectral image datasets are utilized to evaluate the proposed method. Experimental results show that different Lagrange multiplier values have influence on the anomaly detection results. The receiver operating characteristic curve is used as one metric for evaluating anomaly detection results. The proposed method outperforms the collaborated representation AD and the benchmark detector-local Reed Xiaoli AD (RXD). The proposed method provides a novel anomaly detection strategy for the practical application of hyperspectral image.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128340683","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 : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679517
Jiangting Song, Fujiang Jin, Lichun Zhou
Spectrophotometer can accurately detect the medium-light color dye concentration but will produce a large error for the dark or very light color dye solution. In this paper, the laser is used as the test signal and expressed in the form of optical quantum wave function, the dye solution is regarded as a one-dimensional square potential barrier, a model is established between the single component dye concentration and the phase difference of transmitted light that tunneled the barrier. The experimental device for the relationship between the dye concentration and the phase difference of transmitted light is designed. The model coefficients were obtained by the experimental data and the least square method, and finally, the model of laser measurement the dye concentration online was obtained. The dye concentration in the model is proportional to the phase difference of transmitted light, which is easy to calculate and measure. The accuracy of the model was verified by experiments.
{"title":"Study and Application of the Measurement Method of Phase Difference in the Single Component Dye Solution Concentration","authors":"Jiangting Song, Fujiang Jin, Lichun Zhou","doi":"10.1109/ICEMI52946.2021.9679517","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679517","url":null,"abstract":"Spectrophotometer can accurately detect the medium-light color dye concentration but will produce a large error for the dark or very light color dye solution. In this paper, the laser is used as the test signal and expressed in the form of optical quantum wave function, the dye solution is regarded as a one-dimensional square potential barrier, a model is established between the single component dye concentration and the phase difference of transmitted light that tunneled the barrier. The experimental device for the relationship between the dye concentration and the phase difference of transmitted light is designed. The model coefficients were obtained by the experimental data and the least square method, and finally, the model of laser measurement the dye concentration online was obtained. The dye concentration in the model is proportional to the phase difference of transmitted light, which is easy to calculate and measure. The accuracy of the model was verified by experiments.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128556190","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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