Gopala Krishna Murthy Mittapally, D. Dantala, Chhabra Inder Mohan, N. V. N. R. Pasalapudi, K. C. Das
. Coriolis Vibratory Gyroscope (CVG) is an inertial angular rate measurement sensor. CVG sensor comprises of metal coated hemispherical quartz vibrating structure as the rotation sensing element. It is forced to vibrate at one of its resonant modes by electrostatic excitation. Because of the limited flexibility of the quartz sensing element, the amplitude is limited to the submicron level. An ultra-high vacuum environment is required for the sensing element to sustain vibration for a long time. The criticality in the sensor development is to maintaining an ultra-high vacuum environment for the sensing element. Sensor suffers a problem of vacuum instability during the operation due to the outgassing from its components. This paper presents a novel approach in the identification of various outgassing sources that exist in the sensor, mitigation plan to minimize outgassing rate by selection of suitable raw material, suitable fabrication process of the components, and the surface characterization etc. The research work also presents the cost-effective experimental methodology to measure the outgassing rate from the sensor components to assess the CVG vacuum life, the requirement of the getter to maintain the ultra-high vacuum level throughout the CVG operation.
{"title":"Impact of outgassing and its corrective methods to improve the vacuum stability in the Coriolis Vibratory Gyroscope","authors":"Gopala Krishna Murthy Mittapally, D. Dantala, Chhabra Inder Mohan, N. V. N. R. Pasalapudi, K. C. Das","doi":"10.21595/jme.2022.22212","DOIUrl":"https://doi.org/10.21595/jme.2022.22212","url":null,"abstract":". Coriolis Vibratory Gyroscope (CVG) is an inertial angular rate measurement sensor. CVG sensor comprises of metal coated hemispherical quartz vibrating structure as the rotation sensing element. It is forced to vibrate at one of its resonant modes by electrostatic excitation. Because of the limited flexibility of the quartz sensing element, the amplitude is limited to the submicron level. An ultra-high vacuum environment is required for the sensing element to sustain vibration for a long time. The criticality in the sensor development is to maintaining an ultra-high vacuum environment for the sensing element. Sensor suffers a problem of vacuum instability during the operation due to the outgassing from its components. This paper presents a novel approach in the identification of various outgassing sources that exist in the sensor, mitigation plan to minimize outgassing rate by selection of suitable raw material, suitable fabrication process of the components, and the surface characterization etc. The research work also presents the cost-effective experimental methodology to measure the outgassing rate from the sensor components to assess the CVG vacuum life, the requirement of the getter to maintain the ultra-high vacuum level throughout the CVG operation.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44543071","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}
J. Vėžys, Y. Aliakseyeu, Y. Bumai, A. Vaskou, V. Niss, V. Minchenya
Thermal relaxation differential spectrometry (TRDS) was used to study the thermal parameters of samples with various design features for heat removal a powerful LED lamp (150 W) used in industrial and street lighting, low power LED lamps (4 W) with filament emitters, as well as SMD emitter. It is shown that the method of thermal relaxation differential spectrometry is effectively applicable to the study of the structure of thermal parameters of both high-power and low-power LED devices. The method is informative and allows to study in the distribution of thermal resistance and heat flux over the volume and layers of the LED device detail. The use of the TRDS method allows the optimization of the thermal design of LED devices to reduce the overheating temperature of their active regions, and, therefore, to reduce the degradation of LED devices.
{"title":"Research of the thermal interface of LED lighting sources by thermal relaxation differential spectrometry (TRDS)","authors":"J. Vėžys, Y. Aliakseyeu, Y. Bumai, A. Vaskou, V. Niss, V. Minchenya","doi":"10.21595/jme.2021.21826","DOIUrl":"https://doi.org/10.21595/jme.2021.21826","url":null,"abstract":"Thermal relaxation differential spectrometry (TRDS) was used to study the thermal parameters of samples with various design features for heat removal a powerful LED lamp (150 W) used in industrial and street lighting, low power LED lamps (4 W) with filament emitters, as well as SMD emitter. It is shown that the method of thermal relaxation differential spectrometry is effectively applicable to the study of the structure of thermal parameters of both high-power and low-power LED devices. The method is informative and allows to study in the distribution of thermal resistance and heat flux over the volume and layers of the LED device detail. The use of the TRDS method allows the optimization of the thermal design of LED devices to reduce the overheating temperature of their active regions, and, therefore, to reduce the degradation of LED devices.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48058301","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}
Eddy current testing is widely used for non-destructive evaluation of conductive materials where an induced current created by a variable magnetic field propagate on the material surface and sensed by a special sensor. The main purpose of this paper is to study the influence of the stress field near the crack tip especially in the singular and elaborated zones of aeronautical material aluminium 7075-T6 to eddy current non-destructive testing enhanced with a very particular type of probe to have better stresses sensitivity. This experimental part understands impedance variations due to the stress with high measurement reliability and shows that eddy current control is very sensitive to the stress and produces significant changes in magnetic parameters that mean stress should be considered in mechanical parts inspection.
{"title":"Stress influence to eddy current control of cracked aeronautical material","authors":"Sari El-Kahina, Benachenhou Kamel","doi":"10.21595/jme.2021.22279","DOIUrl":"https://doi.org/10.21595/jme.2021.22279","url":null,"abstract":"Eddy current testing is widely used for non-destructive evaluation of conductive materials where an induced current created by a variable magnetic field propagate on the material surface and sensed by a special sensor. The main purpose of this paper is to study the influence of the stress field near the crack tip especially in the singular and elaborated zones of aeronautical material aluminium 7075-T6 to eddy current non-destructive testing enhanced with a very particular type of probe to have better stresses sensitivity. This experimental part understands impedance variations due to the stress with high measurement reliability and shows that eddy current control is very sensitive to the stress and produces significant changes in magnetic parameters that mean stress should be considered in mechanical parts inspection.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41711039","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}
Amir Esmael Forouhid, Mohammad Ilkah, Jafar Mahmoudi
To encourage the society to choose the public transportation system, it should comfort and satisfy people. Noise pollution in urban transportation systems is a risk that can endanger passenger health and affect their use of public transportation. Hence, this study investigates the effect of noise pollution on users’ satisfaction of Tehran Metro line 7 using a sound level meter to measure noise pollution in four stations, namely Sanat Square, Tarbiat Modarres University, Shahid Navvab Safavi, and Rudaki. The data was analyzed using noise measurement, and noise pollution is compared at four stations with noise contour maps.
{"title":"Noise pollution contours in metro stations (case study of Tehran metro)","authors":"Amir Esmael Forouhid, Mohammad Ilkah, Jafar Mahmoudi","doi":"10.21595/jme.2021.22114","DOIUrl":"https://doi.org/10.21595/jme.2021.22114","url":null,"abstract":"To encourage the society to choose the public transportation system, it should comfort and satisfy people. Noise pollution in urban transportation systems is a risk that can endanger passenger health and affect their use of public transportation. Hence, this study investigates the effect of noise pollution on users’ satisfaction of Tehran Metro line 7 using a sound level meter to measure noise pollution in four stations, namely Sanat Square, Tarbiat Modarres University, Shahid Navvab Safavi, and Rudaki. The data was analyzed using noise measurement, and noise pollution is compared at four stations with noise contour maps.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42893836","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}
Difficult-to-machine materials, e.g., Titanium alloys, are highly applicable in diverse industries that yield strength and wear resistance. However, they prove difficult to machine due to high vibration, leading to high cutting forces during the machining process. This vibration occurs from chip discontinuity and thereby leads to high friction between the cutting tool and workpiece. In order to minimize these challenges, lubricants are employed in machining operations to reduce frictional and other unnecessary cutting forces and improve surface finish. This research focuses on studying the nano-lubricant effects in reducing cutting forces in the machining of TI-6AL-4V-ELI alloy. Also, carry out a comparative study of dry, mineral oil, and TiO2 nano-lubricant during face-milling machining for optimal performance. Additionally, the study develops a predictive mathematical model for cutting force using a Taguchi L9 orthogonal array. A two-step approach was employed to develop the nano-lubricant before the machining process. The dynamometer is used to collect the cutting force data at the end of each sample. The Results show that the lubrication conditions play a significant role in the reduction of cutting forces. The mineral oil-based-TiO2 nano-lubricant reduces the cutting force by 19 % compared with the mineral oil during the machining of TI-6AL-4V-ELI alloy. Furthermore, the optimal parameters to reduce cutting forces during face milling of TI-6AL-4V-ELI alloy are cutting speed at 3000 rpm, 200 mm/min feed rate, 0.3 mm depth of cut to obtain the minimum cutting force 30 (N). This study concludes that the application of TiO2 nanoparticles in mineral oil significantly improves the thermal and mechanical properties, which leads to a reduction of cutting force.
{"title":"Experimental analysis of cutting force during machining difficult to cut materials under dry, mineral oil, and TiO2 nano-lubricant","authors":"I. Okokpujie, L. Tartibu","doi":"10.21595/jme.2021.22186","DOIUrl":"https://doi.org/10.21595/jme.2021.22186","url":null,"abstract":"Difficult-to-machine materials, e.g., Titanium alloys, are highly applicable in diverse industries that yield strength and wear resistance. However, they prove difficult to machine due to high vibration, leading to high cutting forces during the machining process. This vibration occurs from chip discontinuity and thereby leads to high friction between the cutting tool and workpiece. In order to minimize these challenges, lubricants are employed in machining operations to reduce frictional and other unnecessary cutting forces and improve surface finish. This research focuses on studying the nano-lubricant effects in reducing cutting forces in the machining of TI-6AL-4V-ELI alloy. Also, carry out a comparative study of dry, mineral oil, and TiO2 nano-lubricant during face-milling machining for optimal performance. Additionally, the study develops a predictive mathematical model for cutting force using a Taguchi L9 orthogonal array. A two-step approach was employed to develop the nano-lubricant before the machining process. The dynamometer is used to collect the cutting force data at the end of each sample. The Results show that the lubrication conditions play a significant role in the reduction of cutting forces. The mineral oil-based-TiO2 nano-lubricant reduces the cutting force by 19 % compared with the mineral oil during the machining of TI-6AL-4V-ELI alloy. Furthermore, the optimal parameters to reduce cutting forces during face milling of TI-6AL-4V-ELI alloy are cutting speed at 3000 rpm, 200 mm/min feed rate, 0.3 mm depth of cut to obtain the minimum cutting force 30 (N). This study concludes that the application of TiO2 nanoparticles in mineral oil significantly improves the thermal and mechanical properties, which leads to a reduction of cutting force.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48058879","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}
Oleg Kuzmin, R. M. García, Anton Kharitonenkov, V. Snezhko
The construction industry is increasingly striving to improve the tribological features of architectural structures to increase their service life. The focus lies on self-compacting concrete (SCC) as the most appropriate option to fulfil this task. However, there are still some problems related to its durability, particularly in terms of physical and chemical properties, which are crucial in preventing corrosion of the reinforcement. This study seeks to assess the durability of self-compacting concrete and С20/25 class concrete with similar compressive strength. The measurements taken during the study include the primary strength indicators (water porosity, chloride diffusion, and oxygen permeability) and additional properties necessary for a better understanding (mercury porosity, capillary water absorption, carbonation, and ammonium nitrate leaching). Mixes of SCC and conventional concrete contained the same raw materials in identical proportions. Test results revealed that the service life of these two concretes could be considered equivalent. Therefore, self-compacting concrete with specific compressive strength can be regarded as durable as shock concrete. The scientific novelty of the study lies in the measurement of durability properties and the service life of concrete structures taking the coefficient of friction on a steel plate for the purpose of comparing concretes with equivalent compressive strength.
{"title":"Determining the tribological features of concrete and assessing the service life of architectural facilities","authors":"Oleg Kuzmin, R. M. García, Anton Kharitonenkov, V. Snezhko","doi":"10.21595/jme.2021.22167","DOIUrl":"https://doi.org/10.21595/jme.2021.22167","url":null,"abstract":"The construction industry is increasingly striving to improve the tribological features of architectural structures to increase their service life. The focus lies on self-compacting concrete (SCC) as the most appropriate option to fulfil this task. However, there are still some problems related to its durability, particularly in terms of physical and chemical properties, which are crucial in preventing corrosion of the reinforcement. This study seeks to assess the durability of self-compacting concrete and С20/25 class concrete with similar compressive strength. The measurements taken during the study include the primary strength indicators (water porosity, chloride diffusion, and oxygen permeability) and additional properties necessary for a better understanding (mercury porosity, capillary water absorption, carbonation, and ammonium nitrate leaching). Mixes of SCC and conventional concrete contained the same raw materials in identical proportions. Test results revealed that the service life of these two concretes could be considered equivalent. Therefore, self-compacting concrete with specific compressive strength can be regarded as durable as shock concrete. The scientific novelty of the study lies in the measurement of durability properties and the service life of concrete structures taking the coefficient of friction on a steel plate for the purpose of comparing concretes with equivalent compressive strength.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49063893","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}
Based on bilinear hardening material model, the swage autofrettage technology of steel sleeve for pump is analyzed. The theoretical calculation formulas of stress, strain, residual stress and strain and punch thrust of swage autofrettage steel sleeve are derived by the elastic-plastic analysis. The accuracy of the theoretical formulas is verified by the swage autofrettage experiment. The result of theoretical calculation is consistent with that of the experiment, and the process of the second loading does not affect the autofrettage result. The theoretical calculation formulas can be used to guide the swage autofrettage technology design of the steel sleeve for the pump.
{"title":"Study on swage autofrettage of steel sleeve for the high pressure plunger pump","authors":"Jia-huan Liu, Chunguang Zhang, Guangheng Liu, Shuai Chu, Shangqing Li, Junfeng Zhang","doi":"10.21595/jme.2021.21962","DOIUrl":"https://doi.org/10.21595/jme.2021.21962","url":null,"abstract":"Based on bilinear hardening material model, the swage autofrettage technology of steel sleeve for pump is analyzed. The theoretical calculation formulas of stress, strain, residual stress and strain and punch thrust of swage autofrettage steel sleeve are derived by the elastic-plastic analysis. The accuracy of the theoretical formulas is verified by the swage autofrettage experiment. The result of theoretical calculation is consistent with that of the experiment, and the process of the second loading does not affect the autofrettage result. The theoretical calculation formulas can be used to guide the swage autofrettage technology design of the steel sleeve for the pump.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45570974","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}
As autonomous driving technology becomes more and more popular, its safety is also attracting attention. Regarding the automatic driving of vehicles, the detection of road markings is particularly important. This paper improves the lane edge detection part of the Hough transform lane line detection method. Because the traditional Canny operator edge detection method is good for image processing, but the detection time is long, this paper replaces the Canny algorithm with the Robert operator edge detection method. The sub-edge detection method can improve the detection speed of lane line extraction. In MATLAB, by using multiple edge detection operators to perform edge detection on the same image 100 times, and taking the average of the detection time, it is found that the Robert operator takes a shorter time in the detection process than the Canny operator; Then the Robert operator and Canny operator are respectively fused into the Hough transform lane line detection. After 100 times, the same image is detected, and the running time is statistically averaged for comparison and analysis. The Robert operator is better than the Canny operator. The time taken is reduced by 0.15191 s. The simulation results show that the integration of Robert operator in Hough transform lane line detection improves the real-time performance of lane detection.
{"title":"Detection of lane line based on Robert operator","authors":"Miao Xu, Yang Wei","doi":"10.21595/jme.2021.22023","DOIUrl":"https://doi.org/10.21595/jme.2021.22023","url":null,"abstract":"As autonomous driving technology becomes more and more popular, its safety is also attracting attention. Regarding the automatic driving of vehicles, the detection of road markings is particularly important. This paper improves the lane edge detection part of the Hough transform lane line detection method. Because the traditional Canny operator edge detection method is good for image processing, but the detection time is long, this paper replaces the Canny algorithm with the Robert operator edge detection method. The sub-edge detection method can improve the detection speed of lane line extraction. In MATLAB, by using multiple edge detection operators to perform edge detection on the same image 100 times, and taking the average of the detection time, it is found that the Robert operator takes a shorter time in the detection process than the Canny operator; Then the Robert operator and Canny operator are respectively fused into the Hough transform lane line detection. After 100 times, the same image is detected, and the running time is statistically averaged for comparison and analysis. The Robert operator is better than the Canny operator. The time taken is reduced by 0.15191 s. The simulation results show that the integration of Robert operator in Hough transform lane line detection improves the real-time performance of lane detection.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42410207","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 substantial increase in the number of motor vehicles in recent years has caused many traffic safety problems and has aroused widespread concern. As the basis of intelligent vehicle environment perception and a necessary condition for realizing the functions of assisted driving system, traffic sign recognition is of great significance for realizing automatic driving of vehicles, improving intelligent transportation systems, and promoting the development of smart cities.This paper mainly identifies traffic signs, using histogram of gradient feature extraction method. The image is collected and preprocessed by a vision sensor. The color threshold segmentation method and morphological processing are used to reduce the interference of the background area and enhance the contour of the sign area. Finally, HOG method is used to collect the gradient of each pixel point in the cell unit or the direction histogram of the edge to identify traffic signs. Through MATALB simulation, it is obtained that the HOG image feature extraction method has high accuracy, small error and short recognition time, which shows the effectiveness of the algorithm.
{"title":"Traffic sign recognition based on HOG feature extraction","authors":"Guo Shuqing, Song Yucong","doi":"10.21595/jme.2021.22022","DOIUrl":"https://doi.org/10.21595/jme.2021.22022","url":null,"abstract":"The substantial increase in the number of motor vehicles in recent years has caused many traffic safety problems and has aroused widespread concern. As the basis of intelligent vehicle environment perception and a necessary condition for realizing the functions of assisted driving system, traffic sign recognition is of great significance for realizing automatic driving of vehicles, improving intelligent transportation systems, and promoting the development of smart cities.This paper mainly identifies traffic signs, using histogram of gradient feature extraction method. The image is collected and preprocessed by a vision sensor. The color threshold segmentation method and morphological processing are used to reduce the interference of the background area and enhance the contour of the sign area. Finally, HOG method is used to collect the gradient of each pixel point in the cell unit or the direction histogram of the edge to identify traffic signs. Through MATALB simulation, it is obtained that the HOG image feature extraction method has high accuracy, small error and short recognition time, which shows the effectiveness of the algorithm.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" 26","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41254243","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, five classical edge detection operators are compared, and then a traffic signal light detection and recognition scheme that can be used for intelligent connected vehicles is implemented. Firstly, the image to be processed is obtained by detecting the traffic signal light through the vision sensor. The image is preprocessed: the color space of the image is converted from RGB space to HSV space. Through the grayscale, histogram equalization, image binarization processing, using the morphological closure operation, the five operators are compared in noise sensitivity, positioning accuracy and signal-to-noise ratio, the Canny edge detection operator is selected for image edge detection, and the target recognition area is obtained. Finally, using the histogram drawn, the number of red, green and yellow pixel points in the histogram can be clearly counted, and the color with the largest number of pixel points can be identified as the color of the identified traffic signal light, and the identification of the traffic signal light can be completed. The actual pictures are simulated on the MATLAB, which verifies the feasibility of the proposed method of traffic signal light recognition method based on Canny operator in this paper, which can correctly identify the color of the traffic signal light.
{"title":"Traffic signal light detection and recognition based on canny operator","authors":"Guo Shuqing, L. Yuming","doi":"10.21595/jme.2021.22024","DOIUrl":"https://doi.org/10.21595/jme.2021.22024","url":null,"abstract":"In this paper, five classical edge detection operators are compared, and then a traffic signal light detection and recognition scheme that can be used for intelligent connected vehicles is implemented. Firstly, the image to be processed is obtained by detecting the traffic signal light through the vision sensor. The image is preprocessed: the color space of the image is converted from RGB space to HSV space. Through the grayscale, histogram equalization, image binarization processing, using the morphological closure operation, the five operators are compared in noise sensitivity, positioning accuracy and signal-to-noise ratio, the Canny edge detection operator is selected for image edge detection, and the target recognition area is obtained. Finally, using the histogram drawn, the number of red, green and yellow pixel points in the histogram can be clearly counted, and the color with the largest number of pixel points can be identified as the color of the identified traffic signal light, and the identification of the traffic signal light can be completed. The actual pictures are simulated on the MATLAB, which verifies the feasibility of the proposed method of traffic signal light recognition method based on Canny operator in this paper, which can correctly identify the color of the traffic signal light.","PeriodicalId":42196,"journal":{"name":"Journal of Measurements in Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2021-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45808916","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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