At present there are exist comprehensive studies in the field of railway track condition monitoring systems and development of non-contact photonic systems (NCPS) based on digital CCD-cameras, high-speed board computers and powerful software. It consists of four special digital matrix CCD- cameras and four laser stripe illuminators. They are rigidly connected and structurally fixed on a wheel set of the track inspection vehicle in such manner that the corners of observation and the distances from the cameras up to the head of the rail during movement of the vehicle remain fixed. Distortions obtained when using Euler planes' formulas can be removed by applying coordinates conformity system. According to the algorithms made a cut-off method and tangent methods have been compared.
{"title":"Algorithms and software to determine rail profile using moving distorted images","authors":"D. V. Popov, Olga S. Smoleva","doi":"10.1117/12.463483","DOIUrl":"https://doi.org/10.1117/12.463483","url":null,"abstract":"At present there are exist comprehensive studies in the field of railway track condition monitoring systems and development of non-contact photonic systems (NCPS) based on digital CCD-cameras, high-speed board computers and powerful software. It consists of four special digital matrix CCD- cameras and four laser stripe illuminators. They are rigidly connected and structurally fixed on a wheel set of the track inspection vehicle in such manner that the corners of observation and the distances from the cameras up to the head of the rail during movement of the vehicle remain fixed. Distortions obtained when using Euler planes' formulas can be removed by applying coordinates conformity system. According to the algorithms made a cut-off method and tangent methods have been compared.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"365 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443023","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}
With account of modern optoelectronics global trends review is presented for on-board (air-borne and space-borne) equipment for transportation means. Different applications of optoelectronic devices and systems in on-board equipment have been considered. It's stressed that the problems of perspective transportation means can't be solved without progress of integrated optoelectronics. Data for monolithic A3 B5-based devices are presented, including monolithic LED bars and monolithic display boards. Advantages and shortcomings of the modern high-brightness light emitters are considered and the importance of good characteristics at ultralow working currents level is stressed. Review of several alternative approaches to the problems of integrated optoelectronics is presented.
{"title":"New generation of high-efficiency optoelectronic devices and systems for transportation: on-board equipment","authors":"O. Ermakov","doi":"10.1117/12.463458","DOIUrl":"https://doi.org/10.1117/12.463458","url":null,"abstract":"With account of modern optoelectronics global trends review is presented for on-board (air-borne and space-borne) equipment for transportation means. Different applications of optoelectronic devices and systems in on-board equipment have been considered. It's stressed that the problems of perspective transportation means can't be solved without progress of integrated optoelectronics. Data for monolithic A3 B5-based devices are presented, including monolithic LED bars and monolithic display boards. Advantages and shortcomings of the modern high-brightness light emitters are considered and the importance of good characteristics at ultralow working currents level is stressed. Review of several alternative approaches to the problems of integrated optoelectronics is presented.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"59 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113971715","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}
V. G. Inozemtsev, V. A. Shilin, Vladimir G. Syster
In transportation, photonics helps save lives and improves safety. A vehicle - whether it is drawn, floated or driven - carries stringent physical limitations. Any photonic hardware will increase the vehicle's weight, space and power consumption. But this hardware will improve safety for drivers and passengers. Photonics also helps to inspect railroads and highways. Lasers, smart imagers and computers for data processing offer a range of capabilities for transportation industry. The proposed paper will discuss the state of the art in the area of photonic applications for transportation.
{"title":"Photonics in transportation","authors":"V. G. Inozemtsev, V. A. Shilin, Vladimir G. Syster","doi":"10.1117/12.463464","DOIUrl":"https://doi.org/10.1117/12.463464","url":null,"abstract":"In transportation, photonics helps save lives and improves safety. A vehicle - whether it is drawn, floated or driven - carries stringent physical limitations. Any photonic hardware will increase the vehicle's weight, space and power consumption. But this hardware will improve safety for drivers and passengers. Photonics also helps to inspect railroads and highways. Lasers, smart imagers and computers for data processing offer a range of capabilities for transportation industry. The proposed paper will discuss the state of the art in the area of photonic applications for transportation.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115570354","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}
Russian regional society for scientists and engineers TOPEK jointed scientists, designers, engineers, postgraduates and students in the field of solid-state optoelectronic and photonic systems is presented. TOPEK's organization, officers, and research and development activity is described. Postgraduates and students participation in science life is considered.
{"title":"Russian regional society for scientists and engineers TOPEK-solid-state optoelectronic systems","authors":"Elena E. Bokareva, V. A. Shilin","doi":"10.1117/12.463480","DOIUrl":"https://doi.org/10.1117/12.463480","url":null,"abstract":"Russian regional society for scientists and engineers TOPEK jointed scientists, designers, engineers, postgraduates and students in the field of solid-state optoelectronic and photonic systems is presented. TOPEK's organization, officers, and research and development activity is described. Postgraduates and students participation in science life is considered.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"19 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114241340","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 comparison of the CMOS APS and CCD device features has been made. It is expedient to develop high resolution and wide dynamic range systems with the PhCCD and simple systems with CMOS APS, which allows developing camera-on-a-chip. Schematic and layout types of CMOS APS pixel: with 3, 4 transistors per pixel, and with 5 transistors per two pixels have been considered. Pixel mathematical models, which binds photoelectric characteristics and design parameters. Dependencies of main features: reset time, read-out time, output signal amplitude, signal-to-noise ratio, modulation transfer function (MFT), which allows correctly designing the CMOS APS for any purpose applications, have been calculated.
{"title":"Analytical models of CMOS APS","authors":"V. A. Shilin, Pavel A. Skrylev, A. Stempkovsky","doi":"10.1117/12.463473","DOIUrl":"https://doi.org/10.1117/12.463473","url":null,"abstract":"The comparison of the CMOS APS and CCD device features has been made. It is expedient to develop high resolution and wide dynamic range systems with the PhCCD and simple systems with CMOS APS, which allows developing camera-on-a-chip. Schematic and layout types of CMOS APS pixel: with 3, 4 transistors per pixel, and with 5 transistors per two pixels have been considered. Pixel mathematical models, which binds photoelectric characteristics and design parameters. Dependencies of main features: reset time, read-out time, output signal amplitude, signal-to-noise ratio, modulation transfer function (MFT), which allows correctly designing the CMOS APS for any purpose applications, have been calculated.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122220736","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}
M. Gourary, S. Rusakov, S. Ulyanov, M. Zharov, B. Mulvaney
This paper presents an approach for noise characterization of read-out circuits for CMOS image sensors in frames of transient noise analysis. It provides computation of the complete probabilistic characterization of such circuits. The method is efficient because no time-consuming convolution-like procedures are used. The flicker noise is naturally taken into account without additional computational efforts.
{"title":"Time-domain non-Monte-Carlo method for noise simulation in CMOS imager sensors","authors":"M. Gourary, S. Rusakov, S. Ulyanov, M. Zharov, B. Mulvaney","doi":"10.1117/12.463477","DOIUrl":"https://doi.org/10.1117/12.463477","url":null,"abstract":"This paper presents an approach for noise characterization of read-out circuits for CMOS image sensors in frames of transient noise analysis. It provides computation of the complete probabilistic characterization of such circuits. The method is efficient because no time-consuming convolution-like procedures are used. The flicker noise is naturally taken into account without additional computational efforts.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121030795","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}
Velocity is an important feature of transportation, which in many respects defines safety of the movement, keeping of the trains schedule and parameters of navigation (definition of exact coordinate of a train on the railway). The accuracy measurement of velocity for the rolling stock is the important problem for railway transport, as the solution will ensure increase of safe passengers' transportation. At the present time electromechanical sensors are applied, on rail transport to determine the velocity of the movement. The work of the sensors is based on calculation of number of turns of a wheel. An error of measurement makes about 5 km/h, which is caused by slipping in and wearing out of wheels. Such value of an error is inadmissible for modern and perspective surface railway transport and metro.
{"title":"Railway track image processing to calibrate the photonic velocity sensor","authors":"Mikhael E. Fainberg","doi":"10.1117/12.463482","DOIUrl":"https://doi.org/10.1117/12.463482","url":null,"abstract":"Velocity is an important feature of transportation, which in many respects defines safety of the movement, keeping of the trains schedule and parameters of navigation (definition of exact coordinate of a train on the railway). The accuracy measurement of velocity for the rolling stock is the important problem for railway transport, as the solution will ensure increase of safe passengers' transportation. At the present time electromechanical sensors are applied, on rail transport to determine the velocity of the movement. The work of the sensors is based on calculation of number of turns of a wheel. An error of measurement makes about 5 km/h, which is caused by slipping in and wearing out of wheels. Such value of an error is inadmissible for modern and perspective surface railway transport and metro.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"331 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122330653","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}
I. V. Komlev, G. A. Mezentseva, A. Reznichenko, M. A. Tavrisova, O. R. Khrolova, V. Petukhov, M. Semenov
New laser dyes of different chemical structure for blue- green and red spectral regions have been developed. These materials were tested as laser media with the second and third harmonics of a Nd3+ laser ((lambda) equals 532 and 351 nm) as a pump source. Some of the investigated dyes: Coumarin 522T, Coumarin 480D, Naphtalimide 6T, Phenalemine 512, and Benzanthrone 14 M are more efficient than commonly used laser dyes.
{"title":"New efficient laser dyes for the green and red spectral regions with a broad wavelength tuning range","authors":"I. V. Komlev, G. A. Mezentseva, A. Reznichenko, M. A. Tavrisova, O. R. Khrolova, V. Petukhov, M. Semenov","doi":"10.1117/12.463474","DOIUrl":"https://doi.org/10.1117/12.463474","url":null,"abstract":"New laser dyes of different chemical structure for blue- green and red spectral regions have been developed. These materials were tested as laser media with the second and third harmonics of a Nd3+ laser ((lambda) equals 532 and 351 nm) as a pump source. Some of the investigated dyes: Coumarin 522T, Coumarin 480D, Naphtalimide 6T, Phenalemine 512, and Benzanthrone 14 M are more efficient than commonly used laser dyes.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"4761 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130271061","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 hybrid multilayer X-ray sensitive structure with direct enlightening has been developed. The direct enlightening provides high quantum output of absorbed light. It is necessary to combine an output signals from different layers. An electronic calibration allows partially combining that output signals. The simulation of multilayer X-ray CCD and CMOS detectors for energy range from 1 to 100 keV has been carried out. In comparison to previous detectors, its sensitivity is increased in 80 - 120 times. This advantage has significant meaning for medicine and other fields.
{"title":"Multilayer x-ray-sensitive CCDs","authors":"A. S. Skrylev, Pavel A. Skrylev, V. A. Shilin","doi":"10.1117/12.463478","DOIUrl":"https://doi.org/10.1117/12.463478","url":null,"abstract":"The hybrid multilayer X-ray sensitive structure with direct enlightening has been developed. The direct enlightening provides high quantum output of absorbed light. It is necessary to combine an output signals from different layers. An electronic calibration allows partially combining that output signals. The simulation of multilayer X-ray CCD and CMOS detectors for energy range from 1 to 100 keV has been carried out. In comparison to previous detectors, its sensitivity is increased in 80 - 120 times. This advantage has significant meaning for medicine and other fields.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114876709","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}
S. Larionov, Serge F. Kabov, D. V. Popov, E. Titov
The contact-free photon system of measurement of a rail track contains the subsystem of level measurement of an inclination of a rail track monitoring car, velocity of driving and sample of pickets. This subsystem is implemented on the basis of optoelectronic sensors and Complex Programmable Logic Device (CPLD). The format of the transmitted data surveyed the calculation of parameters for a given accuracy and speed range is reduced. The outcomes and structure of the subsystem is shown. The value of a velocity is determined in notebook by an amount of going impulses from the optoelectronic sensor.
{"title":"Optoelectronic sensors to measure velocity and level for Moscow Metro rail track monitoring station","authors":"S. Larionov, Serge F. Kabov, D. V. Popov, E. Titov","doi":"10.1117/12.463455","DOIUrl":"https://doi.org/10.1117/12.463455","url":null,"abstract":"The contact-free photon system of measurement of a rail track contains the subsystem of level measurement of an inclination of a rail track monitoring car, velocity of driving and sample of pickets. This subsystem is implemented on the basis of optoelectronic sensors and Complex Programmable Logic Device (CPLD). The format of the transmitted data surveyed the calculation of parameters for a given accuracy and speed range is reduced. The outcomes and structure of the subsystem is shown. The value of a velocity is determined in notebook by an amount of going impulses from the optoelectronic sensor.","PeriodicalId":415922,"journal":{"name":"Conference on Photonics for Transportation","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927284","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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