In recent years, with the rapid development of domestic industries, “Made in China” has become global, but at the same time, “rapid development” has also brought about increasingly serious environmental damage, including sewage, exhaust gas, noise, light pollution, odor, and solids. There are also more and more major pollution incidents caused by wastes and chemical residues. 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 is a global issue.

Environmental protection and environmental monitoring have now become an important task in protecting the ecological environment, rationally utilizing environmental resources, developing low-carbon economy, reducing pollutant emissions, and achieving sustainable development. Government departments at all levels have increasingly attached importance to the protection of the environment. The EPA is the competent department that administers the government in accordance with the law and strengthens environmental supervision. It monitors pollution sources, establishes pollution source files and information databases, provides scientific plans for the government, optimizes industrial structure, and formulates policies for the coordinated development of environmental protection and economic and social development. Important reference.

Due to the scattered distribution of pollution sources, the inability of real-time monitoring of pollution conditions leading to inadequate supervision, and the inability of timely detection of environmental safety hazards, it is imperative to establish a set of audio/video and environmental protection systems capable of effectively implementing the target responsibilities. And monitoring equipment operating parameters for centralized 24-hour real-time remote monitoring network environment video surveillance system.

The following is a brief introduction of the engineering design plan of a multi-level network environment video surveillance system undertaken by a company in X Province to discuss with industry peers.

demand analysis

For the requirements and status quo of environmental protection and environmental monitoring of X Province, the multi-level network monitoring system to be constructed should meet the following requirements: At present, the environmental radiation automatic monitoring system for nuclear facilities has been deployed in the various environmental protection bureaus of X Province and monitored points Has access to the Internet. However, only a few surveillance sites have installed video surveillance systems and have a variety of brands of hardware facilities, but they are not yet connected to the entire province. The multi-level network monitoring system to be constructed requires that all the monitoring video be put in place, and the integration of video and nuclear facilities environmental monitoring systems and the entire province's network;

• 24-hour monitoring of front-end pollution sources, remote control of front-end camera equipment with pan/tilt and lens, real-time, clear image, complete audio and video requirements; multi-level video surveillance, integrated environmental monitoring system, and environmental protection managers at all levels Institutions can view the audio and video, emission data, equipment operation status, and alarm information of all pollution sources in the jurisdiction according to their jurisdiction; compatible with existing video equipment at various monitoring sites, including various types of cameras, DVRs, DVS, and matrix; real-time transmission of alarm information occurs. Over-emission or illegal discharge, immediate warning, can be sent to the staff member's mobile phone by SMS message; click on the client software to click on the alarm information, you can look at the front-end video of the area at any time, view the scene; video and capture, According to the policy settings, the video will be automatically recorded after the alarm, instant images can be captured at any time; the analog matrix and digital devices must be well combined, taking into account that some of the original video surveillance devices of the environmental protection authorities have not reached the update period, so the new platform needs to be Some matrices and digital devices are well integrated.

·Supervision and display of environmental monitoring data and video images. Through the integration of the video surveillance system and the environmental monitoring system, information such as pollution emission data collected at the monitoring points can be displayed superimposed on the monitoring images, and reference comparisons can be made intuitively. When querying historical video and historical data, it is also very convenient to perform a related query between the two, from the images to the data, and the images directly from the data. Through the combination of video and data, false data can be effectively prevented and on-site problems can be discovered in a timely and intuitive manner.

· Each level of platform can realize video decoding on the video wall, more intuitive for monitoring and management; statistics tables, all operation logs and alarm information, can be statistical and output in tabular form; through the integration with the video surveillance platform, a structure of pollution Emission monitoring, remote video surveillance, pollution monitoring equipment status monitoring Trinity integrated monitoring and management platform.

The goal of building

Through a multi-level networked video surveillance system customized for the environmental protection industry, key pollution sources can be monitored in real time for 24 hours. The waste water, waste gas, and environmental protection equipment operation status of each company can be transmitted in graphical form to the corresponding monitoring center of the environmental protection department. On the screen, monitoring of pollution sources is more intuitive. The environmental protection management departments at all levels can view and extract the current data of each pollution source on-line monitoring instrument and the operation recorder of each pollution control facility at any time, including video, and can also access historical data and videos.

The system can automatically alarm when the pollution source exceeds the standard emission and the pollution source monitoring equipment is illegally shut down. When the alarm is triggered, the scene screen and data information are simultaneously popped up, and alarm linkage can be performed. At the same time, when all levels of sub-control centers receive an alarm, the system automatically uploads the video files within the alarm minutes to the competent authority. The system can also automatically (timedly) send a mobile phone short message to the environmental protection manager or the person in charge of the business to inform relevant events.

Solution Technology Measures

At present, there is no real multi-level networked monitoring system integrating environmental monitoring and video surveillance across the province in China. The author believes that in order to be truly realized, the following issues need to be solved technically:

Realize true multi-level networking. If there is a one-stop shop for a brand, the pressure on the center will increase rapidly with the increase in the number of front-end videos. If a distributed architecture is adopted, each subsystem is operated independently and is an integral part of the overall platform. The front-end subsystems realize localized management and can effectively avoid the hidden dangers of the center-down system.

·Compatible with various video surveillance hardware devices. Some branded software platforms have not yet achieved true compatibility with many types of encoders, mostly by modifying the protocol. However, the newly-built platform can realize plug and play of hardware devices through technological innovation, which not only improves the system stability, but also reduces the workload of the hardware after-sales service;

· Implement modular mixed management. In particular, in the case of matrix devices with different protocols, the analog matrix and digital devices are required to be well-integrated. • For ADSL, which is used by a few companies, the video surveillance platform must be able to break through the dynamic IP problems and achieve remote control with the sub-control center without domain name resolution. Networking; integration, integration, and management of the three types of monitoring for environmental data, monitoring equipment operating status, and environmental video, and the solution providers must be familiar with various industrial protocols.

System Features

• Flexible: Discard the huge array of access servers, directory management servers, and forwarding servers configured in the original software platform, and configure only one server to solve all problems. The entire system can be small or large, when deploying the system, it can start from the smallest unit, and gradually establish sub-control centers. Each sub-control center runs independently, and at the same time, each sub-control center is integrated into the province's large-scale networking platform;

· Good scalability: The automatic system is integrated into the design. After the center is established, all network expansions will automatically be integrated into the monitoring network to which they belong. This will make full use of pre-resources, reduce the expansion cost, and truly achieve high scalability; advanced and stable : Under the distributed system architecture, the entire platform manages load balancing at all levels when managing 8000 video streams, and the server configuration requirements are low. The trunk video is concurrent with 200 channels and each subsystem supports 500 clients. The three-level networking delay is minimal; · Operation and management is simple: user-friendly design provides users with a simple and easy-to-use interface, intuitive, convenient and efficient, all operations easy to understand and easy to use, to meet the needs of users at all levels;

· Practicality and economy: Compatible with a wide range of devices, DVRs (or capture cards, DVS, IPCamera) that are truly compatible include: Hai Kang, Dahua, Longchi, Sony, Hanbang, Panasonic, Axis, Hundred million, Samsung, World Albert, ZTE, Honeywell, etc., can also be compatible with MAX, AB, AD, PELCO and other matrix, with a limited investment to construct a best performance network monitoring system;

· Standardization and openness: using TCP/IP, HTTP standard communication protocol, providing powerful video surveillance multi-level networking while fully taking into account the comprehensive needs of users, open a variety of serial ports, provide access control, alarm, smoke, infrared, Temperature, pressure, flow and other types of signal input and output, with alarm signal and video recording linkage, alarm signal and control output and other equipment linkage function;

Security and confidentiality: embedded devices (webcams, video servers, and network balls) can effectively prevent viruses from intruding, and video streaming networks use strict encryption. Back-end and client monitoring management software adopts user authority setting and login authentication to enhance the confidentiality and security level of the system;

Multi-platform compatibility: Windows and Linux platforms can be switched freely, and can be mixed and used. Secondary development: The monitoring platform software is an independent intellectual property product. The underlying architecture and technology are mature, leaving open interfaces for customers' secondary development.

Conclusion

After the completion of the comprehensive video surveillance monitoring system, it will provide environmental protection departments at all levels with the operation status of pollution monitoring equipment; various pollutant discharge data such as sewage, exhaust gas, noise, light pollution, odor, solid waste, and chemical residues; Video and other comprehensive monitoring information. Through comprehensive monitoring, environmental law enforcement departments can fully understand the situation of the pollution source site, and use advanced IT technology to timely direct and deal with accidents on the spot of pollution sources and effectively stop or amplify pollution behavior.

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