At about 5 o'clock on the August 10th, a dam accident occurred at the Shenjiakeng Reservoir in Tushan County, Zhoushan City, Zhejiang Province. According to the news from the Xushan County Outreach Office in Zhoushan City, the Qiang County governor took a dam accident at the Shenjiakeng Reservoir, killing 10 people and injuring 27 others. In addition to causing casualties, dams in the reservoir also caused a certain impact on downstream villages. The monitoring of water conservancy has played a role as an early-warning mechanism to a certain extent. What implications does Zhoushan Reservoir's dam collapse have on monitoring and monitoring of water conservancy and security?
The village of Zhoushan was damaged by a dam that caused 10 deaths and 27 injuries, and a reservoir with a capacity of 180,000 cubic meters was found at Shenjiakeng Village, Dangshan County, Zhoushan City. At 10:00 on the 10th, a dam broke out, killing 10 people and injuring 27 people. It is reported that Lushan is the second largest island in Zhejiang Zhoushan Islands. At present, the leaders of Zhoushan City and Bishan County have already directed the rescue at the scene and are fully implementing the second round of carpet-based search and rescue work.
The Internet of Things covers water security and the Internet of Things is becoming a new engine for the development of the information society. At present, the sensor network system has already begun to take shape in the practical application of water conservancy projects, and the water conservancy industry has unique conditions for the development of the Internet of Things. Under the support of the sensor network, the water conservancy department has established a communication network covering real-time hydrological computer wide-area networks and water conservancy information backbones throughout the country, and has carried out water dispatching, hydrological forecasting, water conservancy electronic maps, decision support, and automation work. In-depth study. It can be said that the water conservancy department has initially established the prototype of the Internet of Things.
Tiandi Weiye Chen Xiangxiang also stated that in the past construction of water conservancy informatization, some perception methods of the nature of the Internet of Things have been applied. However, the concept of the Internet of Things was not explicitly put forward at that time. Now the concept of "Water Conservancy Internet of Things" strengthens water conservancy. The systemization of informatization in perception, transmission, and application, and the introduction of Internet of Things technologies and application models into the water conservancy industry, helping the water conservancy industry plan and construct information systems such as water conservancy security and water resources supervision from the perspective of the construction of the Internet of Things. It avoided the situation of separate construction, information islands and even repeated construction.
In the past two years, the concept of "Internet of Things" has entered the essence, coupled with the government's attention and promotion, and the marriage of Internet of Things (IoT) and water conservancy has become a reality. The “Water Conservancy Internet of Things†will bring substantial changes to water conservancy security from front-end, transmission, and back-end processing.
China's first water conservancy project for the Internet of Things - "Perception of the Taihu Lake, Smart Water Conservancy" The first phase and second phase of the demonstration project of the Internet of Things has constructed more than 20 cyanobacteria monitoring sites. It is understood that this is a set of smart water conservancy IoT system that integrates intelligent sensing of blue-green algae lakes, salvage and intelligent dispatching of ships and ships, and integrated information management. The comprehensive system of “perceived water conservancy†IoT will mainly include three major parts: flood control and drought prevention command. Intelligent Decision System; Water Environment Intelligent Management System; Water Resources Intelligent Management System. Through the construction of the "Perceived Water Conservancy" Internet of Things comprehensive system, we will comprehensively improve the level of information and intelligence in flood control and drought prevention decision-making, water environmental governance, and water resources management, and realize intelligent sensing, intelligent dispatch, and intelligent management, and build a domestic leader. The world-class water conservancy information system.
However, Tiandi Weiye Chen Xiangxiang also reminded that in order for the Internet of Things to truly land on the water conservancy industry, there must be products and solutions that truly meet the water conservancy security environment and the water conservancy business.
Wireless monitoring is more applicable to the transmission method used in the security system of remote hydrological stations. It is generally considered in combination with the monitoring requirements and the environment. It requires clear and real-time points for the monitoring screen (such as reservoirs, embankments, fishing ports, and hubs). And so on), generally using wired transmission, will build a dedicated network or lease the operator's dedicated line resources (at least ADSL line), stable transmission, bandwidth, can guarantee the monitoring effect, the problem is a long construction period, large investment, maintenance is difficult At present, basically only telecom operators are willing to build.
Some unattended pumping stations, river monitoring stations, and hydrological stations are located deep in the mountains or uninhabited, or even in urban areas, but the wired network is difficult to reach or the ratio of investment income varies greatly. Wireless networks need to be considered (currently 2.5G /3G network is mainly (also consider Wi-Fi) or point-to-point transmission channels (such as microwave wireless spread spectrum, OFDM, COFDM), the advantage is short erection period, low cost, but not as stable as wired transmission, the field is vulnerable to lightning.
Judging from the current situation of use, after the video surveillance has been gradually applied to the water conservancy industry, due to the importance of water conservancy to the national economy and people's livelihood, coupled with the promotion of infrastructure conditions and business selectivity of telecom operators, cable networks are still the main transmission route, and also water conservancy. The preferred method of the department, from the experience of previous project construction, accounts for at least 70%. In the past, wireless transmission was mainly used as a channel for hydrological acquisition and image transmission. Now it is also used as an auxiliary means to fill in the regional monitoring requirements that are difficult to lay lines.
The mature application of 3G in the field of communications has paved the way for its ambition in water conservancy and security. It will undoubtedly greatly accelerate the application of wireless transmission technology in water conservancy and security monitoring, and significantly reduce the cost of construction, to a certain extent. Solve the problem of the line being destroyed. At present, the video transmission in the 3G mode can reach an uploading speed of up to 700 Kbps, and it can generally be around 400-500 Kbps, which meets the requirements of general real-time video monitoring. With the construction of 3G network coverage, 3G wireless video surveillance shoulders heavy responsibility in the water conservancy industry. It is mainly used in the following areas:
The mobile monitoring equipment, which is operated by a single person, is called a single soldier system and is used for mobile acquisition and observation, or it can be observed in the front line during flood-fighting and disaster relief, and transmitted to the command center in real time for easy decision-making.
Remote-controlled unmanned aerial vehicle monitoring equipment, used for aerial photography, can be monitored where people cannot reach, such as searching for missing people in the flood and bird's eye view of the disaster area.
Digital Video Surveillance Helps Water Conservancy and Security Renovation In the application of water conservancy security, video surveillance is still the most important subsystem, and it also plays an important role in dam safety, outdoor protection, unit protection, production supervision, power transmission and distribution. According to Chen Gang, deputy director of Product Management Department of Guangdong Gaoxin (300098, share bar) Communications Co., Ltd., the application of video surveillance products in the water conservancy industry has the following three major characteristics:
Environmental adaptability is strong. Water conservancy monitoring facilities are often outdoors or even in the wild. Conditions are poor. Cameras and other equipment must have features such as waterproof, lightning protection, corrosion protection, high and low temperature, and high wind resistance. In many practical engineering applications, most cameras The damage was caused by lightning strikes, and other equipment crashed due to high temperature work. The equipment selected for use in certain sea inlets should also be protected against salt spray, corrosion, rust and deformation. Most of the water conservancy projects are in the wild and they are easy targets for theft. Therefore, anti-theft and anti-riot requirements should be fully taken into account during construction. The degree of protection should not be lower than IP65. Others are the environmental specialties of transmission and power supply. If some places cannot be laid cables, only wireless transmission, wind and solar power generation, etc. can be used.
Some of the relevant performance indicators are relatively high. For example, there is no lighting in the field, and the low-light camera used in night surveillance must be highly sensitive. Because the scope of water conservancy monitoring is large, infrared light-filling is usually of little significance. It is better to fill the light than to add a spotlight; Some monitoring of water bodies (such as reservoirs, fishing ports, and main embankments) require cameras to support large optical zooming to enable far-sighted viewing; some monitoring points require high resolution, which can distinguish floating objects on the surface of the water, or ship identification in the distance. and many more;
In order to be open, the water conservancy departments have information systems for water conservancy informatization, such as flood warning, hydrology monitoring, water conservancy project management, video conferencing, and electronic sandbox. It is necessary to connect and correlate video surveillance with these business systems in order to maximize Play the role of video information in business applications.
Conclusion:
In terms of security of water conservancy projects, some perimeter prevention, human body detection and theft prevention alarm systems, access control systems for the computer room, and electronic patrol systems for embankment inspections are also used in the water security and security field. The collapse of the Zhoushan Reservoir brings a warning to the monitoring of the water-repellent properties: Monitoring is the basis of early warning and it is the right assistant to prevent major accidents.
The village of Zhoushan was damaged by a dam that caused 10 deaths and 27 injuries, and a reservoir with a capacity of 180,000 cubic meters was found at Shenjiakeng Village, Dangshan County, Zhoushan City. At 10:00 on the 10th, a dam broke out, killing 10 people and injuring 27 people. It is reported that Lushan is the second largest island in Zhejiang Zhoushan Islands. At present, the leaders of Zhoushan City and Bishan County have already directed the rescue at the scene and are fully implementing the second round of carpet-based search and rescue work.
The Internet of Things covers water security and the Internet of Things is becoming a new engine for the development of the information society. At present, the sensor network system has already begun to take shape in the practical application of water conservancy projects, and the water conservancy industry has unique conditions for the development of the Internet of Things. Under the support of the sensor network, the water conservancy department has established a communication network covering real-time hydrological computer wide-area networks and water conservancy information backbones throughout the country, and has carried out water dispatching, hydrological forecasting, water conservancy electronic maps, decision support, and automation work. In-depth study. It can be said that the water conservancy department has initially established the prototype of the Internet of Things.
Tiandi Weiye Chen Xiangxiang also stated that in the past construction of water conservancy informatization, some perception methods of the nature of the Internet of Things have been applied. However, the concept of the Internet of Things was not explicitly put forward at that time. Now the concept of "Water Conservancy Internet of Things" strengthens water conservancy. The systemization of informatization in perception, transmission, and application, and the introduction of Internet of Things technologies and application models into the water conservancy industry, helping the water conservancy industry plan and construct information systems such as water conservancy security and water resources supervision from the perspective of the construction of the Internet of Things. It avoided the situation of separate construction, information islands and even repeated construction.
In the past two years, the concept of "Internet of Things" has entered the essence, coupled with the government's attention and promotion, and the marriage of Internet of Things (IoT) and water conservancy has become a reality. The “Water Conservancy Internet of Things†will bring substantial changes to water conservancy security from front-end, transmission, and back-end processing.
China's first water conservancy project for the Internet of Things - "Perception of the Taihu Lake, Smart Water Conservancy" The first phase and second phase of the demonstration project of the Internet of Things has constructed more than 20 cyanobacteria monitoring sites. It is understood that this is a set of smart water conservancy IoT system that integrates intelligent sensing of blue-green algae lakes, salvage and intelligent dispatching of ships and ships, and integrated information management. The comprehensive system of “perceived water conservancy†IoT will mainly include three major parts: flood control and drought prevention command. Intelligent Decision System; Water Environment Intelligent Management System; Water Resources Intelligent Management System. Through the construction of the "Perceived Water Conservancy" Internet of Things comprehensive system, we will comprehensively improve the level of information and intelligence in flood control and drought prevention decision-making, water environmental governance, and water resources management, and realize intelligent sensing, intelligent dispatch, and intelligent management, and build a domestic leader. The world-class water conservancy information system.
However, Tiandi Weiye Chen Xiangxiang also reminded that in order for the Internet of Things to truly land on the water conservancy industry, there must be products and solutions that truly meet the water conservancy security environment and the water conservancy business.
Wireless monitoring is more applicable to the transmission method used in the security system of remote hydrological stations. It is generally considered in combination with the monitoring requirements and the environment. It requires clear and real-time points for the monitoring screen (such as reservoirs, embankments, fishing ports, and hubs). And so on), generally using wired transmission, will build a dedicated network or lease the operator's dedicated line resources (at least ADSL line), stable transmission, bandwidth, can guarantee the monitoring effect, the problem is a long construction period, large investment, maintenance is difficult At present, basically only telecom operators are willing to build.
Some unattended pumping stations, river monitoring stations, and hydrological stations are located deep in the mountains or uninhabited, or even in urban areas, but the wired network is difficult to reach or the ratio of investment income varies greatly. Wireless networks need to be considered (currently 2.5G /3G network is mainly (also consider Wi-Fi) or point-to-point transmission channels (such as microwave wireless spread spectrum, OFDM, COFDM), the advantage is short erection period, low cost, but not as stable as wired transmission, the field is vulnerable to lightning.
Judging from the current situation of use, after the video surveillance has been gradually applied to the water conservancy industry, due to the importance of water conservancy to the national economy and people's livelihood, coupled with the promotion of infrastructure conditions and business selectivity of telecom operators, cable networks are still the main transmission route, and also water conservancy. The preferred method of the department, from the experience of previous project construction, accounts for at least 70%. In the past, wireless transmission was mainly used as a channel for hydrological acquisition and image transmission. Now it is also used as an auxiliary means to fill in the regional monitoring requirements that are difficult to lay lines.
The mature application of 3G in the field of communications has paved the way for its ambition in water conservancy and security. It will undoubtedly greatly accelerate the application of wireless transmission technology in water conservancy and security monitoring, and significantly reduce the cost of construction, to a certain extent. Solve the problem of the line being destroyed. At present, the video transmission in the 3G mode can reach an uploading speed of up to 700 Kbps, and it can generally be around 400-500 Kbps, which meets the requirements of general real-time video monitoring. With the construction of 3G network coverage, 3G wireless video surveillance shoulders heavy responsibility in the water conservancy industry. It is mainly used in the following areas:
The mobile monitoring equipment, which is operated by a single person, is called a single soldier system and is used for mobile acquisition and observation, or it can be observed in the front line during flood-fighting and disaster relief, and transmitted to the command center in real time for easy decision-making.
Remote-controlled unmanned aerial vehicle monitoring equipment, used for aerial photography, can be monitored where people cannot reach, such as searching for missing people in the flood and bird's eye view of the disaster area.
Digital Video Surveillance Helps Water Conservancy and Security Renovation In the application of water conservancy security, video surveillance is still the most important subsystem, and it also plays an important role in dam safety, outdoor protection, unit protection, production supervision, power transmission and distribution. According to Chen Gang, deputy director of Product Management Department of Guangdong Gaoxin (300098, share bar) Communications Co., Ltd., the application of video surveillance products in the water conservancy industry has the following three major characteristics:
Environmental adaptability is strong. Water conservancy monitoring facilities are often outdoors or even in the wild. Conditions are poor. Cameras and other equipment must have features such as waterproof, lightning protection, corrosion protection, high and low temperature, and high wind resistance. In many practical engineering applications, most cameras The damage was caused by lightning strikes, and other equipment crashed due to high temperature work. The equipment selected for use in certain sea inlets should also be protected against salt spray, corrosion, rust and deformation. Most of the water conservancy projects are in the wild and they are easy targets for theft. Therefore, anti-theft and anti-riot requirements should be fully taken into account during construction. The degree of protection should not be lower than IP65. Others are the environmental specialties of transmission and power supply. If some places cannot be laid cables, only wireless transmission, wind and solar power generation, etc. can be used.
Some of the relevant performance indicators are relatively high. For example, there is no lighting in the field, and the low-light camera used in night surveillance must be highly sensitive. Because the scope of water conservancy monitoring is large, infrared light-filling is usually of little significance. It is better to fill the light than to add a spotlight; Some monitoring of water bodies (such as reservoirs, fishing ports, and main embankments) require cameras to support large optical zooming to enable far-sighted viewing; some monitoring points require high resolution, which can distinguish floating objects on the surface of the water, or ship identification in the distance. and many more;
In order to be open, the water conservancy departments have information systems for water conservancy informatization, such as flood warning, hydrology monitoring, water conservancy project management, video conferencing, and electronic sandbox. It is necessary to connect and correlate video surveillance with these business systems in order to maximize Play the role of video information in business applications.
Conclusion:
In terms of security of water conservancy projects, some perimeter prevention, human body detection and theft prevention alarm systems, access control systems for the computer room, and electronic patrol systems for embankment inspections are also used in the water security and security field. The collapse of the Zhoushan Reservoir brings a warning to the monitoring of the water-repellent properties: Monitoring is the basis of early warning and it is the right assistant to prevent major accidents.
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