Currently,there is significant attention placed on the construction,management,and maintenance of large service bridges.Within the realm of bridge maintenance management,the utilization of detection and monitoring tec...Currently,there is significant attention placed on the construction,management,and maintenance of large service bridges.Within the realm of bridge maintenance management,the utilization of detection and monitoring technology is indispensable.By employing these technologies,we can effectively identify any structural defects within the bridge,promptly uncover unknown risks,proactively establish maintenance strategies,and prevent the rapid deterioration of bridge conditions.This article aims to explore the advantages of applying bridge monitoring and testing technology and to discuss various methods for implementing detection and monitoring technology throughout the construction,management,and maintenance phases of large bridges.Ultimately,this will contribute to ensuring the safe operation of large bridges.展开更多
As a crucial infrastructure in the transport system,the safe operation of bridges is directly related to all aspects of people’s daily lives.The development of bridge structural health monitoring technology and its a...As a crucial infrastructure in the transport system,the safe operation of bridges is directly related to all aspects of people’s daily lives.The development of bridge structural health monitoring technology and its application play an important role in ensuring the safety and extending the service life of bridges.This paper carries out in-depth research and analysis on the related technology of bridge structural health monitoring.Firstly,the existing monitoring technologies at home and abroad are sorted out,and the advantages and problems of various methods are compared and analyzed,including nondestructive testing,stress measurement,vibration characteristic identification,and other commonly used monitoring technologies.Secondly,the key technologies and equipment in the bridge health monitoring system,such as sensor technology,data acquisition,and processing technology,are introduced in detail.Finally,the development trend in the field of bridge health monitoring is prospected from both theoretical research and technical application.In the future,with the development of emerging technologies such as big data,cloud computing,and the Internet of Things,it is expected that bridge health monitoring with intelligent and systematic features will be more widely applied to provide a stronger guarantee for the safe and efficient operation of bridges.展开更多
A procedure to recognize individual discontinuities in rock mass from measurement while drilling(MWD)technology is developed,using the binary pattern of structural rock characteristics obtained from in-hole images for...A procedure to recognize individual discontinuities in rock mass from measurement while drilling(MWD)technology is developed,using the binary pattern of structural rock characteristics obtained from in-hole images for calibration.Data from two underground operations with different drilling technology and different rock mass characteristics are considered,which generalizes the application of the methodology to different sites and ensures the full operational integration of MWD data analysis.Two approaches are followed for site-specific structural model building:a discontinuity index(DI)built from variations in MWD parameters,and a machine learning(ML)classifier as function of the drilling parameters and their variability.The prediction ability of the models is quantitatively assessed as the rate of recognition of discontinuities observed in borehole logs.Differences between the parameters involved in the models for each site,and differences in their weights,highlight the site-dependence of the resulting models.The ML approach offers better performance than the classical DI,with recognition rates in the range 89%to 96%.However,the simpler DI still yields fairly accurate results,with recognition rates 70%to 90%.These results validate the adaptive MWD-based methodology as an engineering solution to predict rock structural condition in underground mining operations.展开更多
In order to study the evolution laws during the development process of the coal face overburden rock mining-induced fissure,we studied the process of evolution of overburden rock mining-induced fissures and dynamicall...In order to study the evolution laws during the development process of the coal face overburden rock mining-induced fissure,we studied the process of evolution of overburden rock mining-induced fissures and dynamically quantitatively described its fractal laws,based on the high-precision microseismic monitoring method and the nonlinear Fractal Geometry Theory.The results show that:the overburden rock mining-induced fissure fractal dimension experiences two periodic change processes with the coal face advance,namely a Small→ Big→ Small process,which tends to be stable;the functional relationship between the extraction step distance and the overburden rock mining-induced fissure fractal dimension is a cubic curve.The results suggest that the fractal dimension reflects the evolution characteristics of the overburden rock mining-induced fissure,which can be used as an evaluation index of the stability of the overburden rock strata,and it provides theoretical guidance for stability analysis of the overburden rock strata,goaf roof control and the support movements in the mining face.展开更多
In recent years, wireless shunting locomotive signal and monitoring system has been rapidly developed and widely used, not only to solve shunting operation risk played a positive role, but also to a certain extent to ...In recent years, wireless shunting locomotive signal and monitoring system has been rapidly developed and widely used, not only to solve shunting operation risk played a positive role, but also to a certain extent to promote the rapid development of science and technology. Firstly, based on the application of STP, the status quo of the existing vehicle ground communication and shunting safety protection technology is analyzed. The technology is still in the preliminary research stage, and problems are inevitable in the application process. This paper briefly analyzes the development of wireless shunting locomotive signal and monitoring technology and equipment, hoping to promote the deep application of the system.展开更多
With the continuous development and utilization of resources, the ecological environment has been destroyed more and more obviously, and natural disasters have also occurred. It is extremely important to improve the e...With the continuous development and utilization of resources, the ecological environment has been destroyed more and more obviously, and natural disasters have also occurred. It is extremely important to improve the environmental monitoring and protection mechanism. Environmental monitoring technology is to use scientific detection methods and means to accurately understand the pollution situation, provide a reliable basis for the prevention and control of pollution, and accurately predict the change of pollutants. In this paper, the application of environmental monitoring technology in environmental protection is studied in order to provide reference for relevant people.展开更多
Affected by ecological environment pollution, water environment monitoring technology is widely needed at present. With the development of China's economy and network technology, water treatment has made great pro...Affected by ecological environment pollution, water environment monitoring technology is widely needed at present. With the development of China's economy and network technology, water treatment has made great progress, but there are still some problems in practice. Therefore, in order to implement and promote water purification more effectively, based on the specific standards of environmental monitoring and water treatment in the process of water treatment, relevant administrative departments must adopt scientific and effective environmental monitoring methods, raise public awareness of pollution control measures, formulate more targeted pollution control measures, and improve the efficiency and scientificity of water treatment.展开更多
In Chinas ecological environment, environmental pollution and climate change are two important problems. With the continuous acceleration of urbanization and urbanization process, the deep development of various indus...In Chinas ecological environment, environmental pollution and climate change are two important problems. With the continuous acceleration of urbanization and urbanization process, the deep development of various industries is becoming more and more harmful to the ecology. In particular, the continuous deterioration of the atmosphere has led to the gradual emergence of adverse factors such as global climate change, which not only poses a certain threat to the human body, but also causes great damage to the long-standing green ecosystem. At present, Chinas environmental problems are still very serious, we must strengthen the environmental monitoring, to ensure the implementation of environmental protection work. In view of this situation, the relevant departments should strengthen environmental monitoring, formulate corresponding laws and regulations, strengthen environmental monitoring equipment, technical and management personnel, fundamentally improve the overall level of environmental monitoring, curb environmental problems from the source, and promote sustainable development.展开更多
With the implementation of the green sustainable development strategy, our country pays more attention to the environmental protection. Since the 18th CPC National Congress, the central government has put forward high...With the implementation of the green sustainable development strategy, our country pays more attention to the environmental protection. Since the 18th CPC National Congress, the central government has put forward higher requirements for the construction of urban ecological civilization, and how to effectively promote the development of environmental monitoring has become a research hotspot. Environmental monitoring objectives cover water pollutants, atmospheric emissions, soil pollutants, noise pollution, radiation pollution and many other contents, which are complicated and technically difficult to implement. At the same time, environmental monitoring needs scientific standard system as support, so it is very important to build a perfect environmental monitoring and management system.展开更多
The power supply system is equipped with power grid monitoring technology, which can effectively monitor the operation of the whole system, so as to ensure the operation efficiency of the power grid. Especially with t...The power supply system is equipped with power grid monitoring technology, which can effectively monitor the operation of the whole system, so as to ensure the operation efficiency of the power grid. Especially with the wide application of automation and intelligent technology, the overall application level of power grid monitoring technology has been greatly improved. However, at present, the comprehensive integration of power grid monitoring technology and power supply system still needs to be further promoted. Based on this, this paper focuses on the importance of the application of power grid monitoring technology in power supply system, as well as specific application strategies and problems faced at this stage, and puts forward solutions to relevant problems, committed to improving the efficiency of power grid monitoring.展开更多
Nowadays, the switchable matrix is widely used in China's mine video monitoring technology. This kind of video monitoring ability is weak, easy to produce discrete phenomenon, and the overall quality is poor, the ...Nowadays, the switchable matrix is widely used in China's mine video monitoring technology. This kind of video monitoring ability is weak, easy to produce discrete phenomenon, and the overall quality is poor, the relevance cannot meet the relevant demand standards. Therefore, in order to avoid the real-time monitoring technology of the mine, the relevant designers integrate a 3D video fusion method, which fuses the video picture with the scene model in the mine. On this basis, combined with various kinds of information technology to enhance its own performance, so we developed a real-time monitoring system combined with three-dimensional video, which integrated monitoring and management of the original fragmented lens on the basis of time and space, and dynamically managed its mine content.展开更多
In the aspect of environmental protection, the application of environmental monitoring technology is a powerful weapon for the development of China's environmental protection cause and also enhances the influence ...In the aspect of environmental protection, the application of environmental monitoring technology is a powerful weapon for the development of China's environmental protection cause and also enhances the influence of environmental policies. However, in the face of the current environmental situation, relevant departments should comprehensively deal with the factors of social development, strengthen the quality control of environmental monitoring, continuously improve the monitoring methods and systems, effectively improve the quality of personnel, and effectively guarantee the quality of environmental monitoring in our country. Environmental problems are complicated by the complexity of China's national economy. The geological and hydrological network is uneven and the monitoring environment is extremely harsh, and the research and application of environmental monitoring technology is extremely important. Based on this, this paper briefly describes several commonly used environmental monitoring technologies in China. At the same time, it is pointed out that the status quo of environmental monitoring highlights the problems existing in the application of relevant monitoring technologies, and the quality control methods of environmental monitoring technologies are briefly analyzed for reference only.展开更多
The atmospheric corrosion monitoring(ACM)technique has been widely employed to track the real-time corrosion behavior of metal materials.However,limited studies have applied ACM to the corrosion protection properties ...The atmospheric corrosion monitoring(ACM)technique has been widely employed to track the real-time corrosion behavior of metal materials.However,limited studies have applied ACM to the corrosion protection properties of organic coatings.This study compared a bare epoxy coating with one containing zinc phosphate corrosion inhibitors,both applied on ACM sensors,to observe their corrosion protection properties over time.Coatings with artificial damage via scratches were exposed to immersion and alternating dry and wet environments,which allowed for monitoring galvanic corrosion currents in real-time.Throughout the corrosion tests,the ACM currents of the zinc phosphate/epoxy coating were considerably lower than those of the blank epoxy coating.The trend in ACM current variations closely matched the results obtained from regular electrochemical tests and surface analysis.This alignment highlights the potential of the ACM technique in evaluating the corrosion protection capabilities of organic coatings.Compared with the blank epoxy coating,the zinc phosphate/epoxy coating showed much-decreased ACM current values that confirmed the effective inhibition of zinc phosphate against steel corrosion beneath the damaged coating.展开更多
The intrusion of obstacles onto railway tracks presents a significant threat to train safety,characterized by sudden and unpredictable occurrences.With China leading the world in high-speed rail mileage,ensuring railw...The intrusion of obstacles onto railway tracks presents a significant threat to train safety,characterized by sudden and unpredictable occurrences.With China leading the world in high-speed rail mileage,ensuring railway security is paramount.The current laser monitoring technologies suffer from high false alarm rates and unreliable intrusion identification.This study addresses these issues by investigating high-resolution laser monitoring technology for railway obstacles,focusing on key parameters such as monitoring range and resolution.We propose an enhanced non-uniform laser scanning method,developing a laser monitoring system that reduces the obstacle false alarm rate to 2.00%,significantly lower than the 20%standard(TJ/GW135-2015).This rate is the best record for laser monitoring systems on China Railway.Our system operates seamlessly in all weather conditions,providing superior accuracy,resolution,and identification efficiency.It is the only 3D LiDAR system certified by the China State Railway Group Co.,Ltd.(Certificate No.[2023]008).Over three years,our system has been deployed at numerous points along various lines managed by the China State Railway Group,accumulating a dataset of 300,000 observations.This extensive deployment has significantly enhanced railway safety.The development and implementation of our railway laser monitoring system represent a substantial advancement in railway safety technology.Its low false alarm rate(2.00%),high accuracy(20 cm×20 cm×20 cm),and robust performance in diverse conditions underscore its potential for widespread adoption,promising to enhance railway safety in China and internationally.展开更多
Emissions from mobile sources and stationary sources contribute to atmospheric pollution in China,and its components,which include ultrafine particles(UFPs),volatile organic compounds(VOCs),and other reactive gases,su...Emissions from mobile sources and stationary sources contribute to atmospheric pollution in China,and its components,which include ultrafine particles(UFPs),volatile organic compounds(VOCs),and other reactive gases,such as NH3and NOx,are the most harmful to human health.China has released various regulations and standards to address pollution from mobile and stationary sources.Thus,it is urgent to develop online monitoring technology for atmospheric pollution source emissions.This study provides an overview of the main progress in mobile and stationary source monitoring technology in China and describes the comprehensive application of some typical instruments in vital areas in recent years.These instruments have been applied to monitor emissions from motor vehicles,ships,airports,the chemical industry,and electric power generation.Not only has the level of atmospheric environment monitoring technology and equipment been improving,but relevant regulations and standards have also been constantly updated.Meanwhile,the developed instruments can provide scientific assistance for the successful implementation of regulations.According to the potential problem areas in atmospheric pollution in China,some research hotspots and future trends of atmospheric online monitoring technology are summarized.Furthermore,more advanced atmospheric online monitoring technology will contribute to a comprehensive understanding of atmospheric pollution and improve environmental monitoring capacity.展开更多
On the basis of the massive amount of published literature and the long-term practice of our research group in the field of prevention and control of rockburst,the research progress and shortcomings in understanding t...On the basis of the massive amount of published literature and the long-term practice of our research group in the field of prevention and control of rockburst,the research progress and shortcomings in understanding the rockburst phenomenon have been comprehensively in-vestigated.This study focuses on the occurrence mechanism and monitoring and early warning technology for rockburst in coal mines.Results showed that the prevention and control of rockburst had made significant progress.However,with the increasing mining depth,several unre-solved concerns remain challenging.From the in-depth research and analysis,it can be inferred that rockburst disasters involve three main problems,i.e.,the induction factors are complicated,the mechanism is still unclear,and the accuracy of the monitoring equipment and multi-source stereo monitoring technology is insufficient.The monitoring and warning standards of rockburst need to be further clarified and im-proved.Combined with the Internet of Things,cloud computing,and big data,a study of the trend of rockburst needs to be conducted.Further-more,the mechanism of multiphase and multi-field coupling induced by rockburst on a large scale needs to be explored.A multisystem and multiparameter integrated monitoring and early warning system and remote monitoring cloud platform for rockburst should be explored and developed.High-reliability sensing technology and equipment and perfect monitoring and early warning standards are considered to be the de-velopment direction of rockburst in the future.This research will help experts and technicians adopt effective measures for controlling rock-burst disasters.展开更多
Marine carbon sequestration is an important component of carbon dioxide capture, utilization and storage(CCUS) technology. It is crucial for achieving carbon peaking and carbon neutralization in China. However, CO_(2)...Marine carbon sequestration is an important component of carbon dioxide capture, utilization and storage(CCUS) technology. It is crucial for achieving carbon peaking and carbon neutralization in China. However, CO_(2) leakage may lead to seabed geological disasters and threaten the safety of marine engineering. Therefore, it is of great significance to study the safety monitoring technology of marine carbon sequestration.Zhanjiang is industrially developed and rich in carbon sources. Owing to the good physical properties and reservoirs and trap characteristics,Zhanjiang has huge storage potential. This paper explores the disaster mechanism associated with CO_(2) leakage in marine carbon sequestration areas. Based on the analysis of the development of Zhanjiang industry and relevant domestic monitoring technologies, several suggestions for safety monitoring of marine carbon sequestration are proposed: application of offshore aquaculture platforms, expansion and application of ocean observation networks, carbon sequestration safety monitoring and sensing system. Intended to build a comprehensive and multi-level safety monitoring system for marine carbon sequestration, the outcome of this study provides assistance for the development of marine carbon sequestration in China's offshore areas.展开更多
The environmental conditions in China are still very serious. In the years to come, the mission for environmental treatment and protection, supervision,
Copper smelting furnaces are typically lined with magnesia-chromite refractories,which are exposed to multiple and complex stresses.The selection of the processing route,furnace type,and slag system is dictated by the...Copper smelting furnaces are typically lined with magnesia-chromite refractories,which are exposed to multiple and complex stresses.The selection of the processing route,furnace type,and slag system is dictated by the specific ore type available;which will determine the individual refractory wear.This paper evaluates the common refractory wear mechanisms as observed in the copper Peirce-Smith converter and in the copper anode furnace.The chemical factors include corrosion caused by fayalite type slag and sulphur supply,as well as by Cu-oxide attack.Changes in the temperature during the furnace operation(thermal shock)create stresses in the brick lining which can only be absorbed to a limited extent.Mechanical factors include erosion,caused primarily by the movement of the metal bath,slag and charging material,as well as stresses in the brickwork due to punching.Finally,improper lining procedures can also affect the service life.All these wear parameters lead to severe degeneration of the brick microstructure and a decreased lining life,and in the worst case overheated furnace structures and possibly dangerous hot spots or even breakouts.Therefore,a detailed investigation and understanding of the wear mechanisms through“post-mortem studies”together with thermochemical calculations by FactSageTM software is an important prerequisite for the refractory producer.Based on these research results,combined with specific process knowledge,appropriate brick lining solutions for copper processing furnaces can be recommended.In addition to the described efforts to investigate refractory wear and optimise lining qualities,it is also essential to monitor the process and the effect on the refractories to further improve both safety and process.For this purpose,technologies using sensors and novel digital solutions can be applied.展开更多
Recently,virtualization technologies have been widely used in industry.In order to monitor the security of target systems in virtualization environments,conventional methods usually put the security monitoring mechani...Recently,virtualization technologies have been widely used in industry.In order to monitor the security of target systems in virtualization environments,conventional methods usually put the security monitoring mechanism into the normal functionality of the target systems.However,these methods are either prone to be tempered by attackers or introduce considerable performance overhead for target systems.To address these problems,in this paper,we present a concurrent security monitoring method which decouples traditional serial mechanisms,including security event collector and analyzer,into two concurrent components.On one hand,we utilize the SIM framework to deploy the event collector into the target virtual machine.On the other hand,we combine the virtualization technology and multi-core technology to put the event analyzer into a trusted execution environment.To address the synchronization problem between these two concurrent components,we make use of Lamport's ring buffer algorithm.Based on the Xen hypervisor,we have implemented a prototype system named COMO.The experimental results show that COMO can monitor the security of the target virtual machine concurrently within a little performance overhead.展开更多
文摘Currently,there is significant attention placed on the construction,management,and maintenance of large service bridges.Within the realm of bridge maintenance management,the utilization of detection and monitoring technology is indispensable.By employing these technologies,we can effectively identify any structural defects within the bridge,promptly uncover unknown risks,proactively establish maintenance strategies,and prevent the rapid deterioration of bridge conditions.This article aims to explore the advantages of applying bridge monitoring and testing technology and to discuss various methods for implementing detection and monitoring technology throughout the construction,management,and maintenance phases of large bridges.Ultimately,this will contribute to ensuring the safe operation of large bridges.
文摘As a crucial infrastructure in the transport system,the safe operation of bridges is directly related to all aspects of people’s daily lives.The development of bridge structural health monitoring technology and its application play an important role in ensuring the safety and extending the service life of bridges.This paper carries out in-depth research and analysis on the related technology of bridge structural health monitoring.Firstly,the existing monitoring technologies at home and abroad are sorted out,and the advantages and problems of various methods are compared and analyzed,including nondestructive testing,stress measurement,vibration characteristic identification,and other commonly used monitoring technologies.Secondly,the key technologies and equipment in the bridge health monitoring system,such as sensor technology,data acquisition,and processing technology,are introduced in detail.Finally,the development trend in the field of bridge health monitoring is prospected from both theoretical research and technical application.In the future,with the development of emerging technologies such as big data,cloud computing,and the Internet of Things,it is expected that bridge health monitoring with intelligent and systematic features will be more widely applied to provide a stronger guarantee for the safe and efficient operation of bridges.
基金conducted under the illu MINEation project, funded by the European Union’s Horizon 2020 research and innovation program under grant agreement (No. 869379)supported by the China Scholarship Council (No. 202006370006)
文摘A procedure to recognize individual discontinuities in rock mass from measurement while drilling(MWD)technology is developed,using the binary pattern of structural rock characteristics obtained from in-hole images for calibration.Data from two underground operations with different drilling technology and different rock mass characteristics are considered,which generalizes the application of the methodology to different sites and ensures the full operational integration of MWD data analysis.Two approaches are followed for site-specific structural model building:a discontinuity index(DI)built from variations in MWD parameters,and a machine learning(ML)classifier as function of the drilling parameters and their variability.The prediction ability of the models is quantitatively assessed as the rate of recognition of discontinuities observed in borehole logs.Differences between the parameters involved in the models for each site,and differences in their weights,highlight the site-dependence of the resulting models.The ML approach offers better performance than the classical DI,with recognition rates in the range 89%to 96%.However,the simpler DI still yields fairly accurate results,with recognition rates 70%to 90%.These results validate the adaptive MWD-based methodology as an engineering solution to predict rock structural condition in underground mining operations.
基金Financial support for this work,provided by the National Natural Science Foundation of China(No.51304154)the Natural Science Foundation Anhui Province(No.1408085MKL92)
文摘In order to study the evolution laws during the development process of the coal face overburden rock mining-induced fissure,we studied the process of evolution of overburden rock mining-induced fissures and dynamically quantitatively described its fractal laws,based on the high-precision microseismic monitoring method and the nonlinear Fractal Geometry Theory.The results show that:the overburden rock mining-induced fissure fractal dimension experiences two periodic change processes with the coal face advance,namely a Small→ Big→ Small process,which tends to be stable;the functional relationship between the extraction step distance and the overburden rock mining-induced fissure fractal dimension is a cubic curve.The results suggest that the fractal dimension reflects the evolution characteristics of the overburden rock mining-induced fissure,which can be used as an evaluation index of the stability of the overburden rock strata,and it provides theoretical guidance for stability analysis of the overburden rock strata,goaf roof control and the support movements in the mining face.
文摘In recent years, wireless shunting locomotive signal and monitoring system has been rapidly developed and widely used, not only to solve shunting operation risk played a positive role, but also to a certain extent to promote the rapid development of science and technology. Firstly, based on the application of STP, the status quo of the existing vehicle ground communication and shunting safety protection technology is analyzed. The technology is still in the preliminary research stage, and problems are inevitable in the application process. This paper briefly analyzes the development of wireless shunting locomotive signal and monitoring technology and equipment, hoping to promote the deep application of the system.
文摘With the continuous development and utilization of resources, the ecological environment has been destroyed more and more obviously, and natural disasters have also occurred. It is extremely important to improve the environmental monitoring and protection mechanism. Environmental monitoring technology is to use scientific detection methods and means to accurately understand the pollution situation, provide a reliable basis for the prevention and control of pollution, and accurately predict the change of pollutants. In this paper, the application of environmental monitoring technology in environmental protection is studied in order to provide reference for relevant people.
文摘Affected by ecological environment pollution, water environment monitoring technology is widely needed at present. With the development of China's economy and network technology, water treatment has made great progress, but there are still some problems in practice. Therefore, in order to implement and promote water purification more effectively, based on the specific standards of environmental monitoring and water treatment in the process of water treatment, relevant administrative departments must adopt scientific and effective environmental monitoring methods, raise public awareness of pollution control measures, formulate more targeted pollution control measures, and improve the efficiency and scientificity of water treatment.
文摘In Chinas ecological environment, environmental pollution and climate change are two important problems. With the continuous acceleration of urbanization and urbanization process, the deep development of various industries is becoming more and more harmful to the ecology. In particular, the continuous deterioration of the atmosphere has led to the gradual emergence of adverse factors such as global climate change, which not only poses a certain threat to the human body, but also causes great damage to the long-standing green ecosystem. At present, Chinas environmental problems are still very serious, we must strengthen the environmental monitoring, to ensure the implementation of environmental protection work. In view of this situation, the relevant departments should strengthen environmental monitoring, formulate corresponding laws and regulations, strengthen environmental monitoring equipment, technical and management personnel, fundamentally improve the overall level of environmental monitoring, curb environmental problems from the source, and promote sustainable development.
文摘With the implementation of the green sustainable development strategy, our country pays more attention to the environmental protection. Since the 18th CPC National Congress, the central government has put forward higher requirements for the construction of urban ecological civilization, and how to effectively promote the development of environmental monitoring has become a research hotspot. Environmental monitoring objectives cover water pollutants, atmospheric emissions, soil pollutants, noise pollution, radiation pollution and many other contents, which are complicated and technically difficult to implement. At the same time, environmental monitoring needs scientific standard system as support, so it is very important to build a perfect environmental monitoring and management system.
文摘The power supply system is equipped with power grid monitoring technology, which can effectively monitor the operation of the whole system, so as to ensure the operation efficiency of the power grid. Especially with the wide application of automation and intelligent technology, the overall application level of power grid monitoring technology has been greatly improved. However, at present, the comprehensive integration of power grid monitoring technology and power supply system still needs to be further promoted. Based on this, this paper focuses on the importance of the application of power grid monitoring technology in power supply system, as well as specific application strategies and problems faced at this stage, and puts forward solutions to relevant problems, committed to improving the efficiency of power grid monitoring.
文摘Nowadays, the switchable matrix is widely used in China's mine video monitoring technology. This kind of video monitoring ability is weak, easy to produce discrete phenomenon, and the overall quality is poor, the relevance cannot meet the relevant demand standards. Therefore, in order to avoid the real-time monitoring technology of the mine, the relevant designers integrate a 3D video fusion method, which fuses the video picture with the scene model in the mine. On this basis, combined with various kinds of information technology to enhance its own performance, so we developed a real-time monitoring system combined with three-dimensional video, which integrated monitoring and management of the original fragmented lens on the basis of time and space, and dynamically managed its mine content.
文摘In the aspect of environmental protection, the application of environmental monitoring technology is a powerful weapon for the development of China's environmental protection cause and also enhances the influence of environmental policies. However, in the face of the current environmental situation, relevant departments should comprehensively deal with the factors of social development, strengthen the quality control of environmental monitoring, continuously improve the monitoring methods and systems, effectively improve the quality of personnel, and effectively guarantee the quality of environmental monitoring in our country. Environmental problems are complicated by the complexity of China's national economy. The geological and hydrological network is uneven and the monitoring environment is extremely harsh, and the research and application of environmental monitoring technology is extremely important. Based on this, this paper briefly describes several commonly used environmental monitoring technologies in China. At the same time, it is pointed out that the status quo of environmental monitoring highlights the problems existing in the application of relevant monitoring technologies, and the quality control methods of environmental monitoring technologies are briefly analyzed for reference only.
基金financially supported by the National Natural Science Foundation of China(No.52371049)the Young Elite Scientists Sponsorship Program by the China Association for Science and Technology(YESS,No.2020QNRC001)the National Science and Technology Resources Investigation Program of China(Nos.2021FY100603 and 2019FY101404)。
文摘The atmospheric corrosion monitoring(ACM)technique has been widely employed to track the real-time corrosion behavior of metal materials.However,limited studies have applied ACM to the corrosion protection properties of organic coatings.This study compared a bare epoxy coating with one containing zinc phosphate corrosion inhibitors,both applied on ACM sensors,to observe their corrosion protection properties over time.Coatings with artificial damage via scratches were exposed to immersion and alternating dry and wet environments,which allowed for monitoring galvanic corrosion currents in real-time.Throughout the corrosion tests,the ACM currents of the zinc phosphate/epoxy coating were considerably lower than those of the blank epoxy coating.The trend in ACM current variations closely matched the results obtained from regular electrochemical tests and surface analysis.This alignment highlights the potential of the ACM technique in evaluating the corrosion protection capabilities of organic coatings.Compared with the blank epoxy coating,the zinc phosphate/epoxy coating showed much-decreased ACM current values that confirmed the effective inhibition of zinc phosphate against steel corrosion beneath the damaged coating.
基金financially supported by the National Natural Science Foundation of China(Nos.62275244,62375258,62225507,U2033211,62175230,and 62175232)the CAS Project for Young Scientists in Basic Research(No.YSBR-065)+2 种基金Scientific Instrument Developing Project of the Chinese Academy of Sciences(No.YJKYYQ20200001)National Key R&D Program of China(No.2022YFB3607800,No.2022YFB3605800,and No.2022YFB4601501)Key Program of the Chinese Academy of Sciences(ZDBS-ZRKJZ-TLC018)。
文摘The intrusion of obstacles onto railway tracks presents a significant threat to train safety,characterized by sudden and unpredictable occurrences.With China leading the world in high-speed rail mileage,ensuring railway security is paramount.The current laser monitoring technologies suffer from high false alarm rates and unreliable intrusion identification.This study addresses these issues by investigating high-resolution laser monitoring technology for railway obstacles,focusing on key parameters such as monitoring range and resolution.We propose an enhanced non-uniform laser scanning method,developing a laser monitoring system that reduces the obstacle false alarm rate to 2.00%,significantly lower than the 20%standard(TJ/GW135-2015).This rate is the best record for laser monitoring systems on China Railway.Our system operates seamlessly in all weather conditions,providing superior accuracy,resolution,and identification efficiency.It is the only 3D LiDAR system certified by the China State Railway Group Co.,Ltd.(Certificate No.[2023]008).Over three years,our system has been deployed at numerous points along various lines managed by the China State Railway Group,accumulating a dataset of 300,000 observations.This extensive deployment has significantly enhanced railway safety.The development and implementation of our railway laser monitoring system represent a substantial advancement in railway safety technology.Its low false alarm rate(2.00%),high accuracy(20 cm×20 cm×20 cm),and robust performance in diverse conditions underscore its potential for widespread adoption,promising to enhance railway safety in China and internationally.
基金supported by the National Key Research and Development Program of China(Nos.2016YFC0201000 and 2016YFC0201100)the Plan for Anhui Major Provincial Science&Technology Project(Nos.202203a07020004 and 202003a07020005)+1 种基金the National Natural Science Foundation of China(Nos.U2133212 and 42005108)the Science and Technological Fund of Anhui Province for Outstanding Youth(No.1808085J19)。
文摘Emissions from mobile sources and stationary sources contribute to atmospheric pollution in China,and its components,which include ultrafine particles(UFPs),volatile organic compounds(VOCs),and other reactive gases,such as NH3and NOx,are the most harmful to human health.China has released various regulations and standards to address pollution from mobile and stationary sources.Thus,it is urgent to develop online monitoring technology for atmospheric pollution source emissions.This study provides an overview of the main progress in mobile and stationary source monitoring technology in China and describes the comprehensive application of some typical instruments in vital areas in recent years.These instruments have been applied to monitor emissions from motor vehicles,ships,airports,the chemical industry,and electric power generation.Not only has the level of atmospheric environment monitoring technology and equipment been improving,but relevant regulations and standards have also been constantly updated.Meanwhile,the developed instruments can provide scientific assistance for the successful implementation of regulations.According to the potential problem areas in atmospheric pollution in China,some research hotspots and future trends of atmospheric online monitoring technology are summarized.Furthermore,more advanced atmospheric online monitoring technology will contribute to a comprehensive understanding of atmospheric pollution and improve environmental monitoring capacity.
基金This work was financially supported by the National Nat-ural Science Foundation of China(Nos.51634001,51774023,and 51904019).
文摘On the basis of the massive amount of published literature and the long-term practice of our research group in the field of prevention and control of rockburst,the research progress and shortcomings in understanding the rockburst phenomenon have been comprehensively in-vestigated.This study focuses on the occurrence mechanism and monitoring and early warning technology for rockburst in coal mines.Results showed that the prevention and control of rockburst had made significant progress.However,with the increasing mining depth,several unre-solved concerns remain challenging.From the in-depth research and analysis,it can be inferred that rockburst disasters involve three main problems,i.e.,the induction factors are complicated,the mechanism is still unclear,and the accuracy of the monitoring equipment and multi-source stereo monitoring technology is insufficient.The monitoring and warning standards of rockburst need to be further clarified and im-proved.Combined with the Internet of Things,cloud computing,and big data,a study of the trend of rockburst needs to be conducted.Further-more,the mechanism of multiphase and multi-field coupling induced by rockburst on a large scale needs to be explored.A multisystem and multiparameter integrated monitoring and early warning system and remote monitoring cloud platform for rockburst should be explored and developed.High-reliability sensing technology and equipment and perfect monitoring and early warning standards are considered to be the de-velopment direction of rockburst in the future.This research will help experts and technicians adopt effective measures for controlling rock-burst disasters.
文摘Marine carbon sequestration is an important component of carbon dioxide capture, utilization and storage(CCUS) technology. It is crucial for achieving carbon peaking and carbon neutralization in China. However, CO_(2) leakage may lead to seabed geological disasters and threaten the safety of marine engineering. Therefore, it is of great significance to study the safety monitoring technology of marine carbon sequestration.Zhanjiang is industrially developed and rich in carbon sources. Owing to the good physical properties and reservoirs and trap characteristics,Zhanjiang has huge storage potential. This paper explores the disaster mechanism associated with CO_(2) leakage in marine carbon sequestration areas. Based on the analysis of the development of Zhanjiang industry and relevant domestic monitoring technologies, several suggestions for safety monitoring of marine carbon sequestration are proposed: application of offshore aquaculture platforms, expansion and application of ocean observation networks, carbon sequestration safety monitoring and sensing system. Intended to build a comprehensive and multi-level safety monitoring system for marine carbon sequestration, the outcome of this study provides assistance for the development of marine carbon sequestration in China's offshore areas.
文摘The environmental conditions in China are still very serious. In the years to come, the mission for environmental treatment and protection, supervision,
文摘Copper smelting furnaces are typically lined with magnesia-chromite refractories,which are exposed to multiple and complex stresses.The selection of the processing route,furnace type,and slag system is dictated by the specific ore type available;which will determine the individual refractory wear.This paper evaluates the common refractory wear mechanisms as observed in the copper Peirce-Smith converter and in the copper anode furnace.The chemical factors include corrosion caused by fayalite type slag and sulphur supply,as well as by Cu-oxide attack.Changes in the temperature during the furnace operation(thermal shock)create stresses in the brick lining which can only be absorbed to a limited extent.Mechanical factors include erosion,caused primarily by the movement of the metal bath,slag and charging material,as well as stresses in the brickwork due to punching.Finally,improper lining procedures can also affect the service life.All these wear parameters lead to severe degeneration of the brick microstructure and a decreased lining life,and in the worst case overheated furnace structures and possibly dangerous hot spots or even breakouts.Therefore,a detailed investigation and understanding of the wear mechanisms through“post-mortem studies”together with thermochemical calculations by FactSageTM software is an important prerequisite for the refractory producer.Based on these research results,combined with specific process knowledge,appropriate brick lining solutions for copper processing furnaces can be recommended.In addition to the described efforts to investigate refractory wear and optimise lining qualities,it is also essential to monitor the process and the effect on the refractories to further improve both safety and process.For this purpose,technologies using sensors and novel digital solutions can be applied.
基金supported in part by National Natural Science Foundation of China(NSFC)under Grant No.61100228 and 61202479the National High-tech R&D Program of China under Grant No.2012AA013101+1 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant No.XDA06030601 and XDA06010701Open Found of Key Laboratory of IOT Application Technology of Universities in Yunnan Province Grant No.2015IOT03
文摘Recently,virtualization technologies have been widely used in industry.In order to monitor the security of target systems in virtualization environments,conventional methods usually put the security monitoring mechanism into the normal functionality of the target systems.However,these methods are either prone to be tempered by attackers or introduce considerable performance overhead for target systems.To address these problems,in this paper,we present a concurrent security monitoring method which decouples traditional serial mechanisms,including security event collector and analyzer,into two concurrent components.On one hand,we utilize the SIM framework to deploy the event collector into the target virtual machine.On the other hand,we combine the virtualization technology and multi-core technology to put the event analyzer into a trusted execution environment.To address the synchronization problem between these two concurrent components,we make use of Lamport's ring buffer algorithm.Based on the Xen hypervisor,we have implemented a prototype system named COMO.The experimental results show that COMO can monitor the security of the target virtual machine concurrently within a little performance overhead.
