Pub Date : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.009
H. Qiang, Tao Fengbo, Liu Yang, Sun Lei, Niu Zhiyuan, Jin Yang
In order to study performance of different extinguishing agents for energy storage battery modulesꎬ an energy storage cabin test platform was built. With lithium iron phosphate energy storage battery module of 8 8 kWh as research objectꎬ fire was induced by thermal runaway from 0 5 C rate constant current overchargeꎬ and experiments were conducted to compare performance of four fire ̄ extinguishing agentsꎬ including medium ̄pressure water mistꎬ Novec1230ꎬ heptafluoropropane and hexafluoropropane. The results show that hexafluoropropane can not extinguish battery fire within a short time while Novec1230 and heptafluoropropane can extinguish it quickly but can not cool it effectively with a tendency to reigniteꎬ all of which are not suitable to be fire extinguishing agent for lithium iron phosphate battery modules. Howeverꎬ medium ̄pressure water mist can quickly extinguish fire and prevent re ̄ignition with its continuous injectionꎬ thus making an ideal fire extinguishing material.
{"title":"Study on performance of gas-liquid extinguishing agent for lithium iron phosphate battery modules","authors":"H. Qiang, Tao Fengbo, Liu Yang, Sun Lei, Niu Zhiyuan, Jin Yang","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.009","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.009","url":null,"abstract":"In order to study performance of different extinguishing agents for energy storage battery modulesꎬ an energy storage cabin test platform was built. With lithium iron phosphate energy storage battery module of 8 8 kWh as research objectꎬ fire was induced by thermal runaway from 0 5 C rate constant current overchargeꎬ and experiments were conducted to compare performance of four fire ̄ extinguishing agentsꎬ including medium ̄pressure water mistꎬ Novec1230ꎬ heptafluoropropane and hexafluoropropane. The results show that hexafluoropropane can not extinguish battery fire within a short time while Novec1230 and heptafluoropropane can extinguish it quickly but can not cool it effectively with a tendency to reigniteꎬ all of which are not suitable to be fire extinguishing agent for lithium iron phosphate battery modules. Howeverꎬ medium ̄pressure water mist can quickly extinguish fire and prevent re ̄ignition with its continuous injectionꎬ thus making an ideal fire extinguishing material.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"109 1","pages":"53"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85715862","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 : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.019
Z. Can, Wang Hong, LU Hua, Zhu Shunying, Xiao Wenbin
Currentlyꎬ when static edge rate is used for vehicle speed controlꎬ cycle length of edge rate period and total length of pavement corresponding to all vehicle speeds are fixedꎬ so it is not well ̄targeted and achieves no obvious effects in speed reduction. In order to make up for this defectꎬ a dynamic speed control edge rate model for tunnel segment was established with minimum vehicle speed dispersion as objective function based on the positive correlation between accident rate and vehicle speed dispersion. Thenꎬ speed control system of dynamic edge rate was installed in central section of long tunnel on expressways for intelligent linkage studies between dynamic edge rate and traffic flow. Finallyꎬ vehicle speeds with or without control system of dynamic edge rate were compared and analyzed. The results show that speed control system based on dynamic edge rate model for tunnel sections can effectively control it with overspeed ratio decreasing by 16 69%ꎬ 85 percentile speedꎬ average speed and speed standard deviation decrease by 6 67%ꎬ 7 96% and 13 45% respectivelyꎬ and its control effect is more remarkable than that of static edge rate.
{"title":"Dynamic vehicle speed control model of edge rate in long tunnel sections","authors":"Z. Can, Wang Hong, LU Hua, Zhu Shunying, Xiao Wenbin","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.019","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.019","url":null,"abstract":"Currentlyꎬ when static edge rate is used for vehicle speed controlꎬ cycle length of edge rate period and total length of pavement corresponding to all vehicle speeds are fixedꎬ so it is not well ̄targeted and achieves no obvious effects in speed reduction. In order to make up for this defectꎬ a dynamic speed control edge rate model for tunnel segment was established with minimum vehicle speed dispersion as objective function based on the positive correlation between accident rate and vehicle speed dispersion. Thenꎬ speed control system of dynamic edge rate was installed in central section of long tunnel on expressways for intelligent linkage studies between dynamic edge rate and traffic flow. Finallyꎬ vehicle speeds with or without control system of dynamic edge rate were compared and analyzed. The results show that speed control system based on dynamic edge rate model for tunnel sections can effectively control it with overspeed ratio decreasing by 16 69%ꎬ 85 percentile speedꎬ average speed and speed standard deviation decrease by 6 67%ꎬ 7 96% and 13 45% respectivelyꎬ and its control effect is more remarkable than that of static edge rate.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"1 1","pages":"122"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82934559","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 : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.006
Zhang Ying, Zhang Xiao, Zhu Zidong, Dang Na, C. Xiaolong
In order to avoid detection dead zone in corrosion detection of large ̄scale storage tank floorꎬ an immersion acoustic method is proposedꎬ of which locating corrosion sound source is a key. Based on a passive source localization algorithm featuring time delay estimation and considering characteristics of immersed acoustic detection of tank floorꎬ a mobile planar five ̄element cross array acoustic method was applied to simulate positioning of bottom plate and verify the test. The results show that this method meets the requirement of corrosion detection in accuracy of direction finding and distance measurement. Direction finding accuracy is not affected by sound source angle φ and distance r while distance accuracy is only positively related to r and independent of φ. With the fitting relationship between relative error of distance and r obtained from experimentꎬ the maximum effective radius of immersed acoustic detecting unit can be 中 国 安 全 科 学 学 报 China Safety Science Journal 第30卷 2020年 determined.
{"title":"Immersion acoustic positioning method of corrosion for large tank bottom plate","authors":"Zhang Ying, Zhang Xiao, Zhu Zidong, Dang Na, C. Xiaolong","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.006","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.006","url":null,"abstract":"In order to avoid detection dead zone in corrosion detection of large ̄scale storage tank floorꎬ an immersion acoustic method is proposedꎬ of which locating corrosion sound source is a key. Based on a passive source localization algorithm featuring time delay estimation and considering characteristics of immersed acoustic detection of tank floorꎬ a mobile planar five ̄element cross array acoustic method was applied to simulate positioning of bottom plate and verify the test. The results show that this method meets the requirement of corrosion detection in accuracy of direction finding and distance measurement. Direction finding accuracy is not affected by sound source angle φ and distance r while distance accuracy is only positively related to r and independent of φ. With the fitting relationship between relative error of distance and r obtained from experimentꎬ the maximum effective radius of immersed acoustic detecting unit can be 中 国 安 全 科 学 学 报 China Safety Science Journal 第30卷 2020年 determined.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"95 1","pages":"35"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78952389","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 : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.013
Tian Shixiang, MA Ruishuai, Zou Yihuai, Xu Shiqing, Li Huaying, Yu Zhaoyang
In order to accurately measure the width of stress ̄relief zone ahead of roadway working faceꎬ borehole gas continuous flow method was proposed based on the relationship between gas flow discharged from coals and in ̄suit stressꎬ and its feasibility was verified theoretically. Thenꎬ borehole gas flow was measured in 2303 ventilating roadway of Xuehu coal mine by using outburst prediction device. The results show that gas flow increases first and then decreases with its peak being the boundary of stress ̄relief zoneꎬ and the width of the zone ahead of working face is determined to be 9 10 meter. Meanwhileꎬ that measured by using drillings amount and drillings gas absorption index Δh2 is 9 5-10 meterꎬ consistent with results of borehole gas continuous flow methodꎬ therefore verifying its reliability in determining width of stress ̄relief zone.
{"title":"Measurement of stress-relief zone width of roadway by borehole gas continuous flow method","authors":"Tian Shixiang, MA Ruishuai, Zou Yihuai, Xu Shiqing, Li Huaying, Yu Zhaoyang","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.013","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.013","url":null,"abstract":"In order to accurately measure the width of stress ̄relief zone ahead of roadway working faceꎬ borehole gas continuous flow method was proposed based on the relationship between gas flow discharged from coals and in ̄suit stressꎬ and its feasibility was verified theoretically. Thenꎬ borehole gas flow was measured in 2303 ventilating roadway of Xuehu coal mine by using outburst prediction device. The results show that gas flow increases first and then decreases with its peak being the boundary of stress ̄relief zoneꎬ and the width of the zone ahead of working face is determined to be 9 10 meter. Meanwhileꎬ that measured by using drillings amount and drillings gas absorption index Δh2 is 9 5-10 meterꎬ consistent with results of borehole gas continuous flow methodꎬ therefore verifying its reliability in determining width of stress ̄relief zone.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"2018 1","pages":"82"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74573440","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 : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.015
Dai Jianfei, Yang Peng, Z. Liyi, Guo Pan, Guan Huaiguang
In order to prevent dam ̄breaking accidents of tailings pondsꎬ to excavate effective information of online monitoring system and improve prediction accuracy of phreatic linesꎬ a prediction model was set up based on PCA and LSTM neural network. Thenꎬ with Chenkeng tailings pond as an exampleꎬ Pearson correlation coefficient and variable combination method were introduced to determine 18 features of model inputsꎬ including location of phreatic line of measuring point in the first three daysꎬ location of two adjacent surrounding saturation linesꎬ water level of pondsꎬ longitudinal displacement of dam body and rainfall. Finallyꎬ PCA was used to eliminate data redundancy between input variablesꎬ and LSTM neural 第 3 期 戴健非等: 集成 PCA 和 LSTM 神经网络的浸润线预测方法 network was applied to predict location of phreatic line for the next three days. The results show that PCA ̄ LSTM neural network ̄based method presents higher predication accuracy with an average absolute error of 0 011 and a decision coefficient of 0 805. And it can achieve stable prediction of phreatic lines for tailings ponds under different rainfall conditions.
{"title":"A PCA-LSTM neural network-integrated method for phreatic line prediction","authors":"Dai Jianfei, Yang Peng, Z. Liyi, Guo Pan, Guan Huaiguang","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.015","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.015","url":null,"abstract":"In order to prevent dam ̄breaking accidents of tailings pondsꎬ to excavate effective information of online monitoring system and improve prediction accuracy of phreatic linesꎬ a prediction model was set up based on PCA and LSTM neural network. Thenꎬ with Chenkeng tailings pond as an exampleꎬ Pearson correlation coefficient and variable combination method were introduced to determine 18 features of model inputsꎬ including location of phreatic line of measuring point in the first three daysꎬ location of two adjacent surrounding saturation linesꎬ water level of pondsꎬ longitudinal displacement of dam body and rainfall. Finallyꎬ PCA was used to eliminate data redundancy between input variablesꎬ and LSTM neural 第 3 期 戴健非等: 集成 PCA 和 LSTM 神经网络的浸润线预测方法 network was applied to predict location of phreatic line for the next three days. The results show that PCA ̄ LSTM neural network ̄based method presents higher predication accuracy with an average absolute error of 0 011 and a decision coefficient of 0 805. And it can achieve stable prediction of phreatic lines for tailings ponds under different rainfall conditions.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"72 1","pages":"94"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81202011","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 : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.027
Li Nan, Chang Suqin, Guo Zerong, HE Jingjie, Y. Mengqi
In order to quantitatively study the heat and moisture transfer performance of SRBA and improve the thermal comfort of SRBAꎬ a thermal manikin was used to measure and analyze thermal insulation and evaporative resistance of cooling vestꎬ SRBA and both stacks at different temperatures (25ꎬ 30ꎬ 40 °C) and humidity (40%ꎬ 55%ꎬ 70%). It is found that the thermal insulation changes at the three temperatures measured as SRBA> both stacks > cooling vestꎬ and the evaporative resistance follows this characteristic above 30 °Cꎬ that the higher the temperature isꎬ the greater the effect of the cooling vest on the heat transfer efficiency of the SRBA will beꎬ and that the thermal insulation can be reduced by up to 46 75% and the evaporative resistance can be reduced up to 82 97%. The results show that at higher ambient temperature ( > 30 °C)ꎬ the cooling vest can effectively reduce the thermal insulation and evaporative resistance of the SRBA and improve the heat and moisture transfer efficiencyꎬ and that the influence of the cooling vest on the heat and moisture transfer of the SRBA changes with the ambient temperatureꎬ humidity and design characteristics.
{"title":"Effect of cooling vest on heat and humidity transfer of stab-resistant body armor","authors":"Li Nan, Chang Suqin, Guo Zerong, HE Jingjie, Y. Mengqi","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.027","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.027","url":null,"abstract":"In order to quantitatively study the heat and moisture transfer performance of SRBA and improve the thermal comfort of SRBAꎬ a thermal manikin was used to measure and analyze thermal insulation and evaporative resistance of cooling vestꎬ SRBA and both stacks at different temperatures (25ꎬ 30ꎬ 40 °C) and humidity (40%ꎬ 55%ꎬ 70%). It is found that the thermal insulation changes at the three temperatures measured as SRBA> both stacks > cooling vestꎬ and the evaporative resistance follows this characteristic above 30 °Cꎬ that the higher the temperature isꎬ the greater the effect of the cooling vest on the heat transfer efficiency of the SRBA will beꎬ and that the thermal insulation can be reduced by up to 46 75% and the evaporative resistance can be reduced up to 82 97%. The results show that at higher ambient temperature ( > 30 °C)ꎬ the cooling vest can effectively reduce the thermal insulation and evaporative resistance of the SRBA and improve the heat and moisture transfer efficiencyꎬ and that the influence of the cooling vest on the heat and moisture transfer of the SRBA changes with the ambient temperatureꎬ humidity and design characteristics.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"46 1","pages":"178"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84125566","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 : 2020-03-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.03.004
Li Shugang, Guo Doudou, Baixue Yang, Yan Min, Lin Haifei, Shi Yu
In order to study effects of surfactant on coal ' s wettabilityꎬ with SDBS taken as research objectꎬ Wiser coal chemical structure model and Material Studio molecular simulation software were used to establish a system where SDBS of six different mass fractions coexisted with water and coal. Thenꎬ the system' s adsorption configurationꎬ energy changesꎬ relative concentration distribution as well as mean square displacement (MSD) of water molecules were analyzed. The results show that hydrophobic alkyl chains of SDBS molecules are adsorbed on coal surfaceꎬ and hydrophilic group with benzene ring warps to water phaseꎬ which reduces liquid ̄solid interfacial tension of water and coal. As mass fraction of SDBS 中 国 安 全 科 学 学 报 China Safety Science Journal 第30卷 2020年 increasesꎬ the system's total energy decreasesꎬ but interaction energy between SDBS and coal increasesꎬ indicating that adsorption between molecules is more stable and wettability is enhanced. Spatial distribution difference of hydrophobic alkyl chains of SDBS molecules is one of the main factors affecting wettability. Diffusion coefficient of water molecules increases along with the growth of SDBS mass fractionꎬ which has a significant effect on wettability of coal.
{"title":"Effect of SDBS of different mass fractions on coal's wettability by molecular simulation","authors":"Li Shugang, Guo Doudou, Baixue Yang, Yan Min, Lin Haifei, Shi Yu","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.03.004","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.03.004","url":null,"abstract":"In order to study effects of surfactant on coal ' s wettabilityꎬ with SDBS taken as research objectꎬ Wiser coal chemical structure model and Material Studio molecular simulation software were used to establish a system where SDBS of six different mass fractions coexisted with water and coal. Thenꎬ the system' s adsorption configurationꎬ energy changesꎬ relative concentration distribution as well as mean square displacement (MSD) of water molecules were analyzed. The results show that hydrophobic alkyl chains of SDBS molecules are adsorbed on coal surfaceꎬ and hydrophilic group with benzene ring warps to water phaseꎬ which reduces liquid ̄solid interfacial tension of water and coal. As mass fraction of SDBS 中 国 安 全 科 学 学 报 China Safety Science Journal 第30卷 2020年 increasesꎬ the system's total energy decreasesꎬ but interaction energy between SDBS and coal increasesꎬ indicating that adsorption between molecules is more stable and wettability is enhanced. Spatial distribution difference of hydrophobic alkyl chains of SDBS molecules is one of the main factors affecting wettability. Diffusion coefficient of water molecules increases along with the growth of SDBS mass fractionꎬ which has a significant effect on wettability of coal.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"17 1","pages":"21"},"PeriodicalIF":0.0,"publicationDate":"2020-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81632466","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 : 2020-02-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.02.024
XU Surui
In order to evaluate occupational health risks caused by productive dust in coal-fired power plants, dust exposure of first-line operators in such plants was explored, and their health risks from exposure to different types of dust were assessed quantitatively by using Monte Carlo simulation method, probability risk assessment and health damage analysis method. The results show that among all occupations, ash removal and slag removal of boiler unit are exposed to the greatest health risk while boiler inspection and desulfurization inspection to minimal risk, and belt inspection and ash removal operators are faced with maximum damage to health. It is also found that body weight (BW) and average time (AT) have negative sensitivity, and parameters which have great impacts on average employee health rank as AT, exposure duration (ED), dust concentration, inhalation rate (IR) and exposure time (ET) in turn.
{"title":"Health risk assessment caused by productive dust in coal-fired power plants","authors":"XU Surui","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.02.024","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.02.024","url":null,"abstract":"In order to evaluate occupational health risks caused by productive dust in coal-fired power plants, dust exposure of first-line operators in such plants was explored, and their health risks from exposure to different types of dust were assessed quantitatively by using Monte Carlo simulation method, probability risk assessment and health damage analysis method. The results show that among all occupations, ash removal and slag removal of boiler unit are exposed to the greatest health risk while boiler inspection and desulfurization inspection to minimal risk, and belt inspection and ash removal operators are faced with maximum damage to health. It is also found that body weight (BW) and average time (AT) have negative sensitivity, and parameters which have great impacts on average employee health rank as AT, exposure duration (ED), dust concentration, inhalation rate (IR) and exposure time (ET) in turn.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"31 1","pages":"152"},"PeriodicalIF":0.0,"publicationDate":"2020-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73942890","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 : 2020-02-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.02.004
Wang Jinjiang, Wang Shuhui, Z. Xing, Zhang Laibin
In order to cope with increasingly complex technological process of gas storage separators and larger process equipment, risk analysis of gas storage separators is conducted based on RBI technology. Firstly, by collecting and integrating multi-source heterogeneous data such as equipment parameters, operating parameters, and environmental parameter, a separator failure model was constructed, its failure probability and area of failure consequences were calculated, and its risk was ranked so as to establish inspection cycle and inspection measures. Then, computer-aided software was developed based on RBI method by using advanced sensing technology and big data analysis technology. The results show that with real-time acquisition and processing of operating data, RBI risk analysis results can achieve both accuracy and automation, thus improving safety management in gas storage station.
{"title":"Risk analysis of gas storage separator based on RBI technology","authors":"Wang Jinjiang, Wang Shuhui, Z. Xing, Zhang Laibin","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.02.004","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.02.004","url":null,"abstract":"In order to cope with increasingly complex technological process of gas storage separators and larger process equipment, risk analysis of gas storage separators is conducted based on RBI technology. Firstly, by collecting and integrating multi-source heterogeneous data such as equipment parameters, operating parameters, and environmental parameter, a separator failure model was constructed, its failure probability and area of failure consequences were calculated, and its risk was ranked so as to establish inspection cycle and inspection measures. Then, computer-aided software was developed based on RBI method by using advanced sensing technology and big data analysis technology. The results show that with real-time acquisition and processing of operating data, RBI risk analysis results can achieve both accuracy and automation, thus improving safety management in gas storage station.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"29 1","pages":"21"},"PeriodicalIF":0.0,"publicationDate":"2020-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89985639","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 : 2020-02-28DOI: 10.16265/J.CNKI.ISSN1003-3033.2020.02.028
Zhang Bo, Song Yuanbin, Xiong Ruoxin, Z. Shichao
In order to address flaws of existing helmet-wearing detection model, such as its requirement of large sample data and inclination to false detection, a new detection model was proposed that combined human joint detection and Faster R-CNN. Then, OpenPose was utilized to locate positions of head and neck joints, and sub-image of small areas near helmet was extracted before it was detected with Faster R-CNN. Finally, spatial relationship between helmet and head / neck joints were analyzed to further verify whether it was worn correctly. The results show that this enhanced method can reduce error rate and improve its environmental adaptation effectively. And even with small sample data, its recall rate increases by more than 20% and detection accuracy by approximately 10%, significantly reducing demand on samples.
{"title":"Helmet-wearing detection considering human joint","authors":"Zhang Bo, Song Yuanbin, Xiong Ruoxin, Z. Shichao","doi":"10.16265/J.CNKI.ISSN1003-3033.2020.02.028","DOIUrl":"https://doi.org/10.16265/J.CNKI.ISSN1003-3033.2020.02.028","url":null,"abstract":"In order to address flaws of existing helmet-wearing detection model, such as its requirement of large sample data and inclination to false detection, a new detection model was proposed that combined human joint detection and Faster R-CNN. Then, OpenPose was utilized to locate positions of head and neck joints, and sub-image of small areas near helmet was extracted before it was detected with Faster R-CNN. Finally, spatial relationship between helmet and head / neck joints were analyzed to further verify whether it was worn correctly. The results show that this enhanced method can reduce error rate and improve its environmental adaptation effectively. And even with small sample data, its recall rate increases by more than 20% and detection accuracy by approximately 10%, significantly reducing demand on samples.","PeriodicalId":9976,"journal":{"name":"中国安全科学学报","volume":"58 1","pages":"177"},"PeriodicalIF":0.0,"publicationDate":"2020-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87989510","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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