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From January to November 2010, the Ministry of Environmental Protection shared 1,469 pollution cases and 149 emergencies. Compared with 2009, environmental emergencies showed a rising trend. How to maintain high-speed economic development, reduce pollutants and gas emissions from the source, actively promote the development of circular economy, and protect human living environment has become a global issue.
China also attaches great importance to the issue of environmental protection. In 2007, the State Council issued a comprehensive work plan for energy conservation and emission reduction, established statistics, monitoring, and evaluation indicators for energy conservation and emission reduction, as well as an assessment and evaluation system for target responsibility, and increased industrial restructuring efforts. Clearly require automatic online monitoring of pollution sources and treatment facilities monitored by the state.
Environmental monitoring application status and bottleneck analysis Based on the above background, a variety of environmental monitoring systems have emerged and have been widely deployed and applied. However, at present, most environmental protection monitoring systems only implement data monitoring functions, such as the real-time collection and monitoring of sulfur dioxide and chemical oxygen demand emissions from blowdown points, but they do not realize the image monitoring function and cannot visually see the actual images of the blowdown points. The actual state of pollution is not fully understood. For this reason, it is imperative to establish a pollution source video surveillance system centered on environmental protection departments at all levels and related polluting companies.
The traditional video surveillance of analog images is usually based on localized monitoring applications. Each monitoring point independently sets up a monitoring system. Although it can be connected through the network and achieve simple access to image functions, due to the lack of unified planning and design, how to The environment monitoring business features more convenient and flexible access to images, data, and emergency command for emergent environmental events still lacks sufficient thinking, resulting in passive environmental monitoring.
At the same time, due to the limitation of the resolution of the analog camera technology, most analog camera equipment can only provide image data based on the CIF, 4CIF, and D1 formats. When an environmental pollution event occurs, the video screen can only barely present the pollution scene. The outline of the pollution, the details of the pollution are ambiguous, and it does not provide the key role of providing on-site certification and clues. Moreover, these video image data are limited to image browsing applications, and they can no longer meet the needs of the current high-definition, data-based synchronization of environmental protection systems in terms of image clarity, fluency, and environmental data applications, and have constrained the pollution of environmental protection systems. The overall effect of source monitoring and control.
The current environmental protection system, in addition to video and audio monitoring, has increasingly exhibited simultaneous display of pollution source monitoring images and data, intelligent analysis, linkage of data abnormality alarms, visualized emergency treatment of sudden environmental events, and emergency command and dispatch. Series application trends.
High-definition intelligent network monitoring In the environmental monitoring application environment monitoring of the high-definition and intelligent for the actual needs of environmental monitoring, combined with advanced technology and applications, the author proposed a set of high-definition intelligent networked environmental monitoring program, the program to the IP transmission network, H. The 264 protocol group is a comprehensive application system that integrates 1080p and 720p HD video, audio monitoring and intercom, data overlay, intelligent analysis, alarm, and visual command scheduling.
Through the high-definition intelligent network environmental protection monitoring program, it can realize the collection, transmission/conversion, display/storage of video and audio and alarm information, authority management, and ensure the safety of information, emergency management and scheduling of environmental events, and other functions. Through the camera system, the areas where frequent pollution incidents occur are continuously monitored, and the monitoring areas and pollution source monitoring points are adjusted remotely by the control center and the sub-control center. The environmental protection department can understand the situation in real time and supervise it without leaving home. In the event of a pollution incident, the on-site video recording can be consulted and displayed in tandem with the environmental monitoring data to facilitate the investigation and processing. The on-site monitoring mode can be changed from the traditional single type, extensive type to integrated type, intelligent type, and intensive type. The efficiency of environmental management.
The application of high-definition environmental monitoring and high-definition (1080P, 720P) and intelligent (intelligent identification, intelligent analysis, etc.) intelligent monitoring systems has become the current trend of environmental monitoring. The combination of high-definition technology and IP technology will provide users with unprecedented data transmission and picture quality experience. Through high-definition 1080p, 720p video surveillance systems, users will be able to distinguish the details of the finest details of the scene and the scene, applicable to more environmental monitoring systems, sewage, air, dust on-site monitoring of the actual needs. High-definition video surveillance will provide greater ease of use, clarity, and monitoring applications for more complex environments for environmental monitoring.
The high-definition application intelligent analysis system of the monitoring system judges whether the environmental conditions are normal through the acquisition and analysis of video, audio, and data. If abnormal conditions such as pollutants are exceeded, an alarm will be automatically given to the attention of the environmental monitoring and management department. And timely processing to curb the occurrence of major pollution incidents.
Typical environmental protection monitoring system construction program HD intelligent networked environmental monitoring system can be set up by the provincial and departmental units. Through unified networking, all monitoring sites in the province are fully connected to the provincial and provincial environmental monitoring platforms for unified management and scheduling. The platform provides related environmental protection departments with supervision functions for environmental monitoring points in their respective regions, and provides their own environmental data monitoring functions for controlled entities.
Environmental Data Analysis Environmental monitoring data mainly includes atmospheric monitoring and water pollution monitoring. In atmospheric monitoring, the main indicators are sulfur dioxide and chemical oxygen demand emissions; water pollution monitoring mainly monitors COD (nitrogen content) values, flow rates, and pH values ​​for sampling.
Each data monitoring requires professional data acquisition equipment (such as sewage collection equipment mainly includes open channel flowmeters and online chemical oxygen demand analyzers), and the collected data is uploaded to the platform for statistical analysis and analysis, and a graph is drawn to provide historical data. Custom query, generate reports and other functions.
Sewage spot video monitoring deploys high-definition network cameras at the blowdown points to collect real-time monitoring of the image information of the monitoring points and upload them to the monitoring center. 1080P and 720P high-definition image effects can allow environmental regulators to clearly understand the scene of smoke, water color, surface floats, water deaths, sewage pipelines and other information, and can effectively avoid the control unit to destroy the data acquisition equipment The sensor performs such activities as stealing.
Environmental data and image-related monitoring image data The data collected by the superimposed data collector is superimposed on the monitoring image, and it is convenient to see the monitoring point image and data information, and realize the correlation between the data and the image. When you look at the data, you can see the image. When you look at the image, you can also see the data. In the later stage, you can view the video through the data. Through the combination of video and data, it can effectively prevent the issue of stolen data and false data.
Surveillance image data superposition and video recording function to record the image information of the monitoring point, providing a basis for environmental remediation. The video recording mode can be flexibly set, such as recording the night recording during the day and monitoring the night-time evacuation; the alarm recording, when the collected data reaches the specified value, triggers the recording and records the violation of laws and regulations.
Linkage alarm When the emission parameter exceeds the limit, the system generates an alarm and there are multiple linkage modes (such as: image switching to the video wall, alarm countdown, sending SMS, external alarm device alarm, etc.), while leaving a historical record, so that managers can understand Which company's parameters have exceeded the standard over a period of time.
Data management of controlled entities provides unified management of enterprise information and monitoring and monitoring equipment. What are the location of the enterprise, which sewerage site, the person in charge, which collection equipment, the equipment model, the unit to which it belongs, and the working status can all be managed in a unified manner through the environmental monitoring system.
Data Management WEB Browsing supports WEB browsing, allowing you to easily view data analysis and monitoring images at any location. The whole production process and pollutant treatment process of the polluting enterprises can be publicized through online video for public understanding and supervision, so that the entire system becomes a transparent project, allowing the society and the public to supervise and understand the environmental status, and contribute to the environment. Effective implementation of protection work.
Based on the BS structure, the WEB browsing GIS map linkage display system supports the electronic map function. All monitoring points can be distributed into static pictures or vectors in MAP INFO format. Pollution source monitoring points are marked on the map. When an alarm occurs, the system The alarm position can be automatically displayed. Click the alarm monitoring point on the map to view the scene monitoring image. The management is very convenient and intuitive.
The GIS map display visual command and dispatch is based on the openness of the high-definition monitoring and management platform, and can be seamlessly integrated with the video conference system to create a visual video command and dispatch system. If there are emergencies in the environmental protection system, the relevant departments can carry out multi-party image and data scheduling as well as multi-party talks to solve problems in a timely manner. At the same time, the environmental protection monitoring system has established various kinds of emergency plans for various environmental protection departments, such as emergency plans for waste water discharge and atmospheric pollution discharge. Different emergencies can occur, and different plans can be initiated for emergency command.
Concluding remarks In today's increasingly polluted environment, the remediation of environmental pollution is urgent, and the protection of the environment and the prevention of pollution are even more important. The networked, high-definition, and intelligent environmental monitoring system is a powerful tool for modern environmental monitoring and management. 