Pub Date : 2019-09-01DOI: 10.1109/OGC.2019.8925048
Yunpeng Liu, Junyi Yin, Xinye Li, Xiaozhou Fan
In order to apply distributed optical fibre sensing technology to transformer winding temperature monitoring, the temperature detection of transformer windings based on different laying methods was studied. The slotted and pasted transformer winding wire models were designed and fabricated respectively. The electromagnetic wire structure and the winding process had been correspondingly improved. The local temperature rise test was carried out and the temperature distribution was monitored and evaluated. The results show that the distributed optical fibre measurement results of the slotted wire have larger errors, the engineering implementation is more complicated and the original structure of the winding has been changed greatly, whereas the measurement result of the pasted wire is more accurate. The pasted wire is more suitable for transformer winding temperature monitoring.
{"title":"Influence of Different Laying Methods on Monitoring Transformer Winding Temperature with Distributed Optical Fibre","authors":"Yunpeng Liu, Junyi Yin, Xinye Li, Xiaozhou Fan","doi":"10.1109/OGC.2019.8925048","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925048","url":null,"abstract":"In order to apply distributed optical fibre sensing technology to transformer winding temperature monitoring, the temperature detection of transformer windings based on different laying methods was studied. The slotted and pasted transformer winding wire models were designed and fabricated respectively. The electromagnetic wire structure and the winding process had been correspondingly improved. The local temperature rise test was carried out and the temperature distribution was monitored and evaluated. The results show that the distributed optical fibre measurement results of the slotted wire have larger errors, the engineering implementation is more complicated and the original structure of the winding has been changed greatly, whereas the measurement result of the pasted wire is more accurate. The pasted wire is more suitable for transformer winding temperature monitoring.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126523558","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925054
Min Zhang, Yunjie Teng
Axis friction of the communication terminal mechanical system can influence the accuracy of the terminal motion control system. Friction can cause the steady state error and making the system response slow. Communication terminal will benefit from the friction compensation in the servo system. The performance of the servo system using the LuGre friction model for compensation is better than the same system without friction compensation. The high performance requirements for the terminal control system can be achieved. This paper describes the nonlinear friction mathematical model, the estimation of the model parameters and reports and analyzes the conclusions of the model-based friction compensation experiment. For an actual terminal motor drive system, the nonlinear friction characteristics of the terminal control system based on the friction compensation is presented. The effectiveness of this control technique is discussed and investigated.
{"title":"The Optimization Control of Model-Based Friction Compensation and Experimental Test for the Laser Communication System","authors":"Min Zhang, Yunjie Teng","doi":"10.1109/OGC.2019.8925054","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925054","url":null,"abstract":"Axis friction of the communication terminal mechanical system can influence the accuracy of the terminal motion control system. Friction can cause the steady state error and making the system response slow. Communication terminal will benefit from the friction compensation in the servo system. The performance of the servo system using the LuGre friction model for compensation is better than the same system without friction compensation. The high performance requirements for the terminal control system can be achieved. This paper describes the nonlinear friction mathematical model, the estimation of the model parameters and reports and analyzes the conclusions of the model-based friction compensation experiment. For an actual terminal motor drive system, the nonlinear friction characteristics of the terminal control system based on the friction compensation is presented. The effectiveness of this control technique is discussed and investigated.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122829110","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925272
Jiaming Zhang, Y. Shang, Cong Sun, Tao Li, Fang Sun
Flame optical tomography is an indispensable part of rocket engine tail flame diagnostic technology. This paper proposes a method for reconstructing the three-dimensional radiation field of flame by optical tomography. When using the optical tomography to measure the three-dimensional radiation field of the flame, we need to use multiple array detectors, and at the same time, we must get the projection data of the three dimensional radiation field along the same direction. In order to obtain a high resolution flame three-dimensional radiation field, we did the following work. First, we perform high-precision calibration on telecentric camera sets. Then, we ensure alignment of the two-dimensional images in multiple directions by polar line correction. Finally, we reconstruct the 3D radiation field of each layer using the 2D flame image slices. We superimpose the radiation field of each layer to reconstruct the complete high precision flame three-dimensional radiation field. We conducted experiments on flame optical chromatography. We used six cameras to shoot the experiment platform from different directions. The reprojection error of the telecentric camera group calibration result is significantly better than the total station. Finally, we obtained a high-precision flame three-dimensional radiation field. We analyzed the experimental results and summarized them at the end of the paper.
{"title":"Three-Dimensional Radiation Field Reconstruction of Engine Tail Flame Based on Optical Computed Tomography","authors":"Jiaming Zhang, Y. Shang, Cong Sun, Tao Li, Fang Sun","doi":"10.1109/OGC.2019.8925272","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925272","url":null,"abstract":"Flame optical tomography is an indispensable part of rocket engine tail flame diagnostic technology. This paper proposes a method for reconstructing the three-dimensional radiation field of flame by optical tomography. When using the optical tomography to measure the three-dimensional radiation field of the flame, we need to use multiple array detectors, and at the same time, we must get the projection data of the three dimensional radiation field along the same direction. In order to obtain a high resolution flame three-dimensional radiation field, we did the following work. First, we perform high-precision calibration on telecentric camera sets. Then, we ensure alignment of the two-dimensional images in multiple directions by polar line correction. Finally, we reconstruct the 3D radiation field of each layer using the 2D flame image slices. We superimpose the radiation field of each layer to reconstruct the complete high precision flame three-dimensional radiation field. We conducted experiments on flame optical chromatography. We used six cameras to shoot the experiment platform from different directions. The reprojection error of the telecentric camera group calibration result is significantly better than the total station. Finally, we obtained a high-precision flame three-dimensional radiation field. We analyzed the experimental results and summarized them at the end of the paper.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131274230","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925279
Jingyuan Feng, Chunyong Yang
EMD based noise suppression technology is introduced to alleviate the influence of solar noise and artificial light source noise for indoor visible light communication system. Both simulation and experiment are adopted to compare the performance with different EMD denoising methods. The results show that the noise suppression technology based on EMD can relieve the effect of noise effectively, improving the stability and reliability of indoor visible light communication system.
{"title":"EMD Based Noise Suppression Technology for Indoor Visible Light Communication System","authors":"Jingyuan Feng, Chunyong Yang","doi":"10.1109/OGC.2019.8925279","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925279","url":null,"abstract":"EMD based noise suppression technology is introduced to alleviate the influence of solar noise and artificial light source noise for indoor visible light communication system. Both simulation and experiment are adopted to compare the performance with different EMD denoising methods. The results show that the noise suppression technology based on EMD can relieve the effect of noise effectively, improving the stability and reliability of indoor visible light communication system.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133617174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A microwave photonic downconverter with the capability of simultaneously realize sub-harmonic frequency downconversion and intermediate frequency (IF) signal image rejection is presented. Radio frequency (RF) carrier-suppressed double-sideband (CS-DSB) modulation and local oscillator (LO) double-sideband (DSB) modulation can be generated by the two sub Mach-Zehnder modulators (MZMs) in an integrated dual-parallel MZM (DPMZM). Then RF and LO signal upper sidebands and lower sidebands can be separated and selected using a two-channel wavelength division multiplexer (WDM). After photodetector (PD) two downconverted signals with same frequency of $omega_{RF}-2omega_{LO}$ and opposite phase are obtained respectively. As can be seen from the simulation results, upper and lower channel suppression of spur is 22.2 dB and 22.37 dB, respectively. System phase deviation is less than 2°. Benefiting from the all-optical and phase-cancellation, excellent image rejection exceeding 45 dB over 20–30 GHz working band is demonstrated.
{"title":"Microwave Photonic Sub-harmonic Downconverter with Image Rejection Capability","authors":"Yu Qiao, Hao Li, Xuedong Hu, Caili Gong, K. Sun, Yongfeng Wei","doi":"10.1109/OGC.2019.8925019","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925019","url":null,"abstract":"A microwave photonic downconverter with the capability of simultaneously realize sub-harmonic frequency downconversion and intermediate frequency (IF) signal image rejection is presented. Radio frequency (RF) carrier-suppressed double-sideband (CS-DSB) modulation and local oscillator (LO) double-sideband (DSB) modulation can be generated by the two sub Mach-Zehnder modulators (MZMs) in an integrated dual-parallel MZM (DPMZM). Then RF and LO signal upper sidebands and lower sidebands can be separated and selected using a two-channel wavelength division multiplexer (WDM). After photodetector (PD) two downconverted signals with same frequency of $omega_{RF}-2omega_{LO}$ and opposite phase are obtained respectively. As can be seen from the simulation results, upper and lower channel suppression of spur is 22.2 dB and 22.37 dB, respectively. System phase deviation is less than 2°. Benefiting from the all-optical and phase-cancellation, excellent image rejection exceeding 45 dB over 20–30 GHz working band is demonstrated.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122552034","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925198
Zhang Jie, Liu Zhi, Zhang Xiaoqi, Ni Xiaolong, Cong Minghui, Gao Siyuan
In this paper, liquid crystal on Silicon Modulator (LC-SLM) is applied to laser transmission system. The beam parameters of the initial light source are adjusted by the phase modulation principle of LC-SLM to simulate the propagation of partially coherent light with different coherence in atmospheric turbulence. The centroid drift of a partially coherent beam propagating in turbulent atmosphere is studied. By comparing the drift of beams with different coherent lengths in turbulence, the results show that the drift of partially coherent beams is less affected by turbulence disturbance.
{"title":"Simulation of Partially Coherent Optical Atmospheric Turbulent Transmission Based on LC-SLM","authors":"Zhang Jie, Liu Zhi, Zhang Xiaoqi, Ni Xiaolong, Cong Minghui, Gao Siyuan","doi":"10.1109/OGC.2019.8925198","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925198","url":null,"abstract":"In this paper, liquid crystal on Silicon Modulator (LC-SLM) is applied to laser transmission system. The beam parameters of the initial light source are adjusted by the phase modulation principle of LC-SLM to simulate the propagation of partially coherent light with different coherence in atmospheric turbulence. The centroid drift of a partially coherent beam propagating in turbulent atmosphere is studied. By comparing the drift of beams with different coherent lengths in turbulence, the results show that the drift of partially coherent beams is less affected by turbulence disturbance.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123936320","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925183
Di Li, Jianguo Fang, Yuan Zhao, Chang-Yu Xu, S. Luo
As the development of modern manufacturing, micro-miniature products have attracted a lot of attention due to their reduction of materials and energy consuming and high utilization of space. The micro monocrystalline diamond (MCD) cutting tool, which can cut parts into three-dimensional micro-parts with super smooth surface and super precision dimension accuracy, is a key issue to ultra-precision machining of micro-parts. In the research, the design principle of micro MCD cutters and the mechanical analysis are studied based on the introduction of the application and features of micro-milling cutting tool of MCD. Then, experiments are made to show the feasibility of fabricating MCD micro-cutting tool by grinding with diamond wheel.
{"title":"Research on Design Theory of Micro-cutting Tool of Monocrystalline Diamond","authors":"Di Li, Jianguo Fang, Yuan Zhao, Chang-Yu Xu, S. Luo","doi":"10.1109/OGC.2019.8925183","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925183","url":null,"abstract":"As the development of modern manufacturing, micro-miniature products have attracted a lot of attention due to their reduction of materials and energy consuming and high utilization of space. The micro monocrystalline diamond (MCD) cutting tool, which can cut parts into three-dimensional micro-parts with super smooth surface and super precision dimension accuracy, is a key issue to ultra-precision machining of micro-parts. In the research, the design principle of micro MCD cutters and the mechanical analysis are studied based on the introduction of the application and features of micro-milling cutting tool of MCD. Then, experiments are made to show the feasibility of fabricating MCD micro-cutting tool by grinding with diamond wheel.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124464525","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925099
Yunjie Teng, S. Tong
In this paper, we designed and optimized the ship-to-airship capture scheme of laser communication system according to the characteristics of airship platform. A composite scanning strategy was proposed to solve the problem of the long capture time under the condition of small divergence angle and far distance. The working principle of this composite scanning strategy and the influencing factors in the capture process were analyzed emphatically, meanwhile, LABVIEW was used to simulate the process. It is proved that the capture strategy saved a lot of capture time of dynamic laser communication between the airship and the ship. The simulation results show that the acquisition time is better than Existing modes.
{"title":"A Fast Acquisition Strategy of Laser Communication on Airship Platform by Small Divergence Angle Composite Scanning","authors":"Yunjie Teng, S. Tong","doi":"10.1109/OGC.2019.8925099","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925099","url":null,"abstract":"In this paper, we designed and optimized the ship-to-airship capture scheme of laser communication system according to the characteristics of airship platform. A composite scanning strategy was proposed to solve the problem of the long capture time under the condition of small divergence angle and far distance. The working principle of this composite scanning strategy and the influencing factors in the capture process were analyzed emphatically, meanwhile, LABVIEW was used to simulate the process. It is proved that the capture strategy saved a lot of capture time of dynamic laser communication between the airship and the ship. The simulation results show that the acquisition time is better than Existing modes.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125272278","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925134
Xiumin Xie, Qiang Xu, Jian Chen, Qian Dai, Wei Zhang, Weiying Hu, Jie Deng, Haizhi Song
Transmission properties of transverse magnetic mid-infrared through sub-wavelength metallic gratings with gradual thickness are studied by finite-difference-time-domain method. The result shows that the infrared transmission spectrum is broadened, but also the maximum transmission is weakened. This is attributed to the positive coupling between the incident wavelength and the slits. Any incident wavelength has a match with the gratings where corresponding thickness stands. On the other hand, unlike the case in conventional gratings, optimal coupling cannot be gained in every slit at the same time, resulting in weakened maximum transmission. Such transmission broadening effect may be applied in these fields where wide spectrum response is required.
{"title":"Infrared Transmission Spectrum Broadening in Metallic Gratings with Gradual Thickness","authors":"Xiumin Xie, Qiang Xu, Jian Chen, Qian Dai, Wei Zhang, Weiying Hu, Jie Deng, Haizhi Song","doi":"10.1109/OGC.2019.8925134","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925134","url":null,"abstract":"Transmission properties of transverse magnetic mid-infrared through sub-wavelength metallic gratings with gradual thickness are studied by finite-difference-time-domain method. The result shows that the infrared transmission spectrum is broadened, but also the maximum transmission is weakened. This is attributed to the positive coupling between the incident wavelength and the slits. Any incident wavelength has a match with the gratings where corresponding thickness stands. On the other hand, unlike the case in conventional gratings, optimal coupling cannot be gained in every slit at the same time, resulting in weakened maximum transmission. Such transmission broadening effect may be applied in these fields where wide spectrum response is required.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133766382","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 : 2019-09-01DOI: 10.1109/OGC.2019.8925112
Y. Yao, Yong Wang, Jun Yan, Dianhong Wang
This paper presents a low-cost portable turbidity sensor using optical fiber. The system composition is described in detail, including the design of the sensor probe, signal conditioning module and data processing. In our solution, support vector regression (SVR) and temperature compensation are combined to model the relationship between the turbidity and the voltages (transmitted voltage and side-scattered voltage). Besides, we provide direct user accessibility via operation interface on an application (APP). The performance of the turbidity sensor has been verified in the laboratory. Experiments are conducted using standard turbidity solution, and the results demonstrate that the proposed sensor is feasible and effective.
{"title":"A Low-Cost Portable Optical Fiber-Based Sensor for Water Turbidity Measurement","authors":"Y. Yao, Yong Wang, Jun Yan, Dianhong Wang","doi":"10.1109/OGC.2019.8925112","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925112","url":null,"abstract":"This paper presents a low-cost portable turbidity sensor using optical fiber. The system composition is described in detail, including the design of the sensor probe, signal conditioning module and data processing. In our solution, support vector regression (SVR) and temperature compensation are combined to model the relationship between the turbidity and the voltages (transmitted voltage and side-scattered voltage). Besides, we provide direct user accessibility via operation interface on an application (APP). The performance of the turbidity sensor has been verified in the laboratory. Experiments are conducted using standard turbidity solution, and the results demonstrate that the proposed sensor is feasible and effective.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133869786","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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