The security camera is widely used. With the long-term aging effect of the environment and the increase in service time, its imaging quality will inevitably decrease. However, there are few research on the impact of environmental aging tests on its imaging quality. This article focuses on the gray scale level of image quality. Considering the complexity of the use environment of the camera, the imaging quality of the typical optical imaging system before and after the gas corrosion testing is analyzed. At the same time, the impact of different light source conditions is also considered here. Studies have found that after environmental testing, the gray scale resolution ability of the imaging system decreases. In addition, light source conditions have a greater impact on its gray scale resolution ability. In the case of optical compensation, the gray scale value is significantly reduced, and the camera cannot perform gray scale resolution. In this paper, two test methods, transmitted standard board method and reflective standard board method, are used to analyze the gray scale value. Studies have found that the results of the two methods are self-consistent.
{"title":"The impact of gas corrosion testing on the gray scale value of the security camera","authors":"T. Wang","doi":"10.1117/12.2667328","DOIUrl":"https://doi.org/10.1117/12.2667328","url":null,"abstract":"The security camera is widely used. With the long-term aging effect of the environment and the increase in service time, its imaging quality will inevitably decrease. However, there are few research on the impact of environmental aging tests on its imaging quality. This article focuses on the gray scale level of image quality. Considering the complexity of the use environment of the camera, the imaging quality of the typical optical imaging system before and after the gas corrosion testing is analyzed. At the same time, the impact of different light source conditions is also considered here. Studies have found that after environmental testing, the gray scale resolution ability of the imaging system decreases. In addition, light source conditions have a greater impact on its gray scale resolution ability. In the case of optical compensation, the gray scale value is significantly reduced, and the camera cannot perform gray scale resolution. In this paper, two test methods, transmitted standard board method and reflective standard board method, are used to analyze the gray scale value. Studies have found that the results of the two methods are self-consistent.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128130759","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}
Zhibin Wen, Zhengji Zhang, Zengjin Lu, Liang Yan, Fubin Ning, Guozhi Cheng, Shixi Zhang, Y. Ning, Tong Liu
Large alumina electrolysis baths operate at high electrical current and high temperature hence a number of safety hazards. Conventional safety inspection relies on manual temperature monitoring using IR remote thermometers, which is not in real time and not reproducible. This paper presents a distributed fiber optic temperature sensor (DTS) system based on Raman scattering principle. The operation principle and method of deployment of the DTS system in an alumina electrolysis base and on-site monitoring results are discussed. The field measurement results show that the accuracy of the measurement of the distributed fiber optic temperature measurement system meets the application requirements and have great application potential.
{"title":"Application of DTS in high-temperature monitoring of alumina electrolysis bath","authors":"Zhibin Wen, Zhengji Zhang, Zengjin Lu, Liang Yan, Fubin Ning, Guozhi Cheng, Shixi Zhang, Y. Ning, Tong Liu","doi":"10.1117/12.2667785","DOIUrl":"https://doi.org/10.1117/12.2667785","url":null,"abstract":"Large alumina electrolysis baths operate at high electrical current and high temperature hence a number of safety hazards. Conventional safety inspection relies on manual temperature monitoring using IR remote thermometers, which is not in real time and not reproducible. This paper presents a distributed fiber optic temperature sensor (DTS) system based on Raman scattering principle. The operation principle and method of deployment of the DTS system in an alumina electrolysis base and on-site monitoring results are discussed. The field measurement results show that the accuracy of the measurement of the distributed fiber optic temperature measurement system meets the application requirements and have great application potential.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132930853","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}
Under the dual effects of the growing demand for efficient distribution and the normalized management of the epidemic, the application of intelligent robots in the intelligent distribution process is considered. In order to let the robot choose the optimal path to reach the target point, and at the same time in each movement process, the obtained detection data are real and reliable. In this paper, combined with the characteristics of the robot itself, the ant colony algorithm is applied, and the detection data is processed through the BP neural network. Using MATLAB simulation platform to generate a twodimensional map randomly, the simulation experiment is carried out. The simulation experiment shows that the proposed algorithm has achieved good results.
{"title":"Research on intelligent distribution of ant colony algorithm based on BP neural network data fusion","authors":"Chao Wang, Yinhua Wnag","doi":"10.1117/12.2667796","DOIUrl":"https://doi.org/10.1117/12.2667796","url":null,"abstract":"Under the dual effects of the growing demand for efficient distribution and the normalized management of the epidemic, the application of intelligent robots in the intelligent distribution process is considered. In order to let the robot choose the optimal path to reach the target point, and at the same time in each movement process, the obtained detection data are real and reliable. In this paper, combined with the characteristics of the robot itself, the ant colony algorithm is applied, and the detection data is processed through the BP neural network. Using MATLAB simulation platform to generate a twodimensional map randomly, the simulation experiment is carried out. The simulation experiment shows that the proposed algorithm has achieved good results.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115387051","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}
Electrical importance tomography (EIT) is a non-invasive technique that aims at reconstructing the internal tissue image of the human body. In this paper, the application of EIT technology in pressure equipment flaw detection is experimentally studied. This paper mainly studies the feasibility of applying EIT technology to temperature monitoring and location, pressure damage location and surface crack defect location. The results show that this method can better detect and locate damage.
{"title":"Experimental study on damage location based on electrical importance tomography technology","authors":"Fa-cai Ren","doi":"10.1117/12.2667858","DOIUrl":"https://doi.org/10.1117/12.2667858","url":null,"abstract":"Electrical importance tomography (EIT) is a non-invasive technique that aims at reconstructing the internal tissue image of the human body. In this paper, the application of EIT technology in pressure equipment flaw detection is experimentally studied. This paper mainly studies the feasibility of applying EIT technology to temperature monitoring and location, pressure damage location and surface crack defect location. The results show that this method can better detect and locate damage.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115562629","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}
Y. Liu, Ning Huang, Wenqi Zhang, Rongchang Dong, Nang Jiang, Changlu Li, Chang-liang Zhao
Aiming at the difficulties of high welding accuracy and weld quality of ultrasonic flowmeter, a high-precision and highquality welding method for pipeline products is proposed. Through simulation analysis of weld thermal deformation, the influence of different welding process parameters on weld thermal deformation is determined, the coaxiality of products and the flatness of installation surface are ensured by designing welding equipment, the starting and ending arc position of pipeline automatic welding is set by adjusting pre-welding assembly quality combined with weld thermal deformation law, and the welding depth and welding quality are ensured by setting welding parameters by sections, thus achieving high precision and high quality of ultrasonic flowmeter. This technology has important practical significance for high-precision and high-quality welding of pipelines.
{"title":"A high-precision welding method of pipeline flowmeter","authors":"Y. Liu, Ning Huang, Wenqi Zhang, Rongchang Dong, Nang Jiang, Changlu Li, Chang-liang Zhao","doi":"10.1117/12.2667468","DOIUrl":"https://doi.org/10.1117/12.2667468","url":null,"abstract":"Aiming at the difficulties of high welding accuracy and weld quality of ultrasonic flowmeter, a high-precision and highquality welding method for pipeline products is proposed. Through simulation analysis of weld thermal deformation, the influence of different welding process parameters on weld thermal deformation is determined, the coaxiality of products and the flatness of installation surface are ensured by designing welding equipment, the starting and ending arc position of pipeline automatic welding is set by adjusting pre-welding assembly quality combined with weld thermal deformation law, and the welding depth and welding quality are ensured by setting welding parameters by sections, thus achieving high precision and high quality of ultrasonic flowmeter. This technology has important practical significance for high-precision and high-quality welding of pipelines.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117071197","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}
Yuanchong Zhang, Zhaoyue Liu, Lina Zeng, Zaijin Li, Dong Xu, Hao Chen, Zhongliang Qiao, Yingliang Qu, Guojun Liu, Lin Li
In this paper, we design and theoretically simulate a highly sensitive photonic crystal fiber sensor based on lossy mode resonance. An ITO/HfO2 bilayer was coated onto the exposed area of the fiber core as the sensing material. This asymmetrical structure can lead both TM-and TE-polarization to improve the detection performance. In addition, we further investigated the influence of the ratio of ITO/HfO2 bilayer film thickness on the maximum sensitivity of the proposed sensor and finally reached a maximum sensitivity at 1.92nm/1% for glycerol solutions detection, which plays a significant role in the optical fiber sensor in the field of glycerol detection.
{"title":"Simulation of a microstructure fiber glycerol sensor based on lossy mode resonance","authors":"Yuanchong Zhang, Zhaoyue Liu, Lina Zeng, Zaijin Li, Dong Xu, Hao Chen, Zhongliang Qiao, Yingliang Qu, Guojun Liu, Lin Li","doi":"10.1117/12.2667880","DOIUrl":"https://doi.org/10.1117/12.2667880","url":null,"abstract":"In this paper, we design and theoretically simulate a highly sensitive photonic crystal fiber sensor based on lossy mode resonance. An ITO/HfO2 bilayer was coated onto the exposed area of the fiber core as the sensing material. This asymmetrical structure can lead both TM-and TE-polarization to improve the detection performance. In addition, we further investigated the influence of the ratio of ITO/HfO2 bilayer film thickness on the maximum sensitivity of the proposed sensor and finally reached a maximum sensitivity at 1.92nm/1% for glycerol solutions detection, which plays a significant role in the optical fiber sensor in the field of glycerol detection.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115757211","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}
The high sensitivity Mz rubidium laser optically pumped magnetometer has important applications in geomagnetic field measurement and geophysics exploration. In this paper we analyze the principle of Mz rubidium laser optically pumped magnetometer. We take rubidium 87 isotope ( 87𝑅𝑏) as the core material of magnetometer, set up a high sensitivity laser optically pumped magnetometer experimental system and carry out magnetic measurement experiments. The experimental results show that the signal strength is 185 mV, the line width is 1.55 kHz. The intrinsic sensitivity of this magnetometer is 33.51 pT/Hz1/2. The research work provides technical support for the development of high sensitivity rubidium laser optically pumped magnetometer.
{"title":"Research on high sensitivity Mz rubidium laser optically pumped magnetometer","authors":"Kun Xu, Yujie Xiang, Xiuyan Ren, Guobao Wang","doi":"10.1117/12.2668335","DOIUrl":"https://doi.org/10.1117/12.2668335","url":null,"abstract":"The high sensitivity Mz rubidium laser optically pumped magnetometer has important applications in geomagnetic field measurement and geophysics exploration. In this paper we analyze the principle of Mz rubidium laser optically pumped magnetometer. We take rubidium 87 isotope ( 87𝑅𝑏) as the core material of magnetometer, set up a high sensitivity laser optically pumped magnetometer experimental system and carry out magnetic measurement experiments. The experimental results show that the signal strength is 185 mV, the line width is 1.55 kHz. The intrinsic sensitivity of this magnetometer is 33.51 pT/Hz1/2. The research work provides technical support for the development of high sensitivity rubidium laser optically pumped magnetometer.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115501841","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}
Yongchao Zhang, Tie-li Zhang, Xiaoxu Liu, Lin Liu, Yulu Wang, Fan Yang
Aerospace medical on orbit inspection instruments have played a great role in the on orbit health inspection and monitoring of astronauts because of their high detection accuracy, portable use and strong environmental adaptability. This paper briefly describes the main detection methods of on orbit medical detection instruments, including electrochemical method, dry chemistry method, flow cytometry combined with fluorescence detection technology, chemiluminescence immunoassay technology and enhanced Raman spectroscopy. The application direction and current situation of on orbit precision detection instruments in the field of aerospace medicine are introduced, and their future development trends are prospected.
{"title":"Development status and prospect of on orbit precision testing instruments for aerospace medicine","authors":"Yongchao Zhang, Tie-li Zhang, Xiaoxu Liu, Lin Liu, Yulu Wang, Fan Yang","doi":"10.1117/12.2667892","DOIUrl":"https://doi.org/10.1117/12.2667892","url":null,"abstract":"Aerospace medical on orbit inspection instruments have played a great role in the on orbit health inspection and monitoring of astronauts because of their high detection accuracy, portable use and strong environmental adaptability. This paper briefly describes the main detection methods of on orbit medical detection instruments, including electrochemical method, dry chemistry method, flow cytometry combined with fluorescence detection technology, chemiluminescence immunoassay technology and enhanced Raman spectroscopy. The application direction and current situation of on orbit precision detection instruments in the field of aerospace medicine are introduced, and their future development trends are prospected.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129493370","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}
H2O is an important molecule in the atmosphere, which is closely related to climate change and industrial applications (such as combustion process). The detection of trace water vapor concentration is of great significance in earth ecology and industrial production. Tunable diode laser absorption spectroscopy (TDLAS) inverses the gas concentration by measuring the gas absorption spectrum. The wavelength of the common characteristic absorption peak of H2O molecule is 7181.16 cm-1. The spectral absorption peaks of different wavelengths are analyzed in the paper. It is proved that when 7306.75 cm-1 characteristic absorption peak is used to replace 7181.16 cm-1 characteristic absorption peak for concentration inversion, the influence can be reduced and the measurement accuracy can be improved by combining the target peak with the interference peak.
{"title":"Study on spectral lines to improve the measurement accuracy of H2O molecular concentration based on TDLAS technology","authors":"Yifan Wang, Jinfeng Zhou, Yung-chul Ju, Xiaosong Shi, Yuhan Zhang, Shaojie Guan","doi":"10.1117/12.2667810","DOIUrl":"https://doi.org/10.1117/12.2667810","url":null,"abstract":"H2O is an important molecule in the atmosphere, which is closely related to climate change and industrial applications (such as combustion process). The detection of trace water vapor concentration is of great significance in earth ecology and industrial production. Tunable diode laser absorption spectroscopy (TDLAS) inverses the gas concentration by measuring the gas absorption spectrum. The wavelength of the common characteristic absorption peak of H2O molecule is 7181.16 cm-1. The spectral absorption peaks of different wavelengths are analyzed in the paper. It is proved that when 7306.75 cm-1 characteristic absorption peak is used to replace 7181.16 cm-1 characteristic absorption peak for concentration inversion, the influence can be reduced and the measurement accuracy can be improved by combining the target peak with the interference peak.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127903472","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}
Yu Jin, Shangmin Lin, Hu Wang, Jiang Qiao, Haoyu Yan, Xingyan Wang
The ultra-efficient standard light baffle plays an important role in the calibration of the stray light test system. In this paper, a three-class baffle is designed. And a design scheme of the baffle with honeycombed wall is proposed, by analyzing the stray light transmission model and suppression mechanism, which can meet the requirements of a baffle with ultra-efficient stray light suppression capability. A simulation model of the baffle was established. The simulation of baffle show that when the stray light suppression angle is greater than 8°, the PST value of the baffle reaches 10-6 magnitude. When the stray light suppression angle is greater than 17°, the PST value of the baffle reaches 10-12 magnitude, which can meet the needs of ultra-efficient calibration of laboratory stray light test systems.
{"title":"Design of three-class ultra-efficient stray light suppression baffle","authors":"Yu Jin, Shangmin Lin, Hu Wang, Jiang Qiao, Haoyu Yan, Xingyan Wang","doi":"10.1117/12.2668091","DOIUrl":"https://doi.org/10.1117/12.2668091","url":null,"abstract":"The ultra-efficient standard light baffle plays an important role in the calibration of the stray light test system. In this paper, a three-class baffle is designed. And a design scheme of the baffle with honeycombed wall is proposed, by analyzing the stray light transmission model and suppression mechanism, which can meet the requirements of a baffle with ultra-efficient stray light suppression capability. A simulation model of the baffle was established. The simulation of baffle show that when the stray light suppression angle is greater than 8°, the PST value of the baffle reaches 10-6 magnitude. When the stray light suppression angle is greater than 17°, the PST value of the baffle reaches 10-12 magnitude, which can meet the needs of ultra-efficient calibration of laboratory stray light test systems.","PeriodicalId":227067,"journal":{"name":"International Conference on Precision Instruments and Optical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128082897","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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