Networked Power Supply Solution for Environmental Monitoring and Supervision System

I. Overview of Networking Requirements for Environmental Monitoring Systems

On January 1, 2018, China’s Environmental Protection Tax Law was officially implemented, imposing taxes nationwide on 4 major categories of pollutants including air pollutants, water pollutants, solid wastes and noise, covering a total of 117 major pollution factors. By April this year, the environmental protection tax (hereinafter referred to as the “EPT”) has been in force for six years. Over the past six years, along with the implementation of the EPT, the positive incentive mechanism based on the principle of “more emissions, more taxes; fewer emissions, fewer taxes; no emissions, no taxes” has forced enterprises to reduce pollutant discharge, thereby driving the green transformation of industries.

Statistics from the State Taxation Administration show that in 2023, China’s industrial enterprises saw a rapid growth in green investment, among which the purchase of environmental governance services rose by 17.7%. The proportion of high-energy-consuming manufacturing in the total manufacturing sector dropped to 30.7%, a decrease of 1.5 percentage points compared with 2022, and the annual EPT revenue reached 20.5 billion yuan, greatly boosting the development and progress of environmental protection undertakings. The levy of EPT requires real-time and accurate grasp of taxpayers’ pollutant discharge volume, which inevitably necessitates the construction of an environmental monitoring and supervision system for real-time monitoring of pollutants and key pollution sources.

At the same time, environmental inspection teams have proven through actions that rounds of environmental inspections are not a mere formality with “more thunder than rain”. Amid the sweeping environmental protection campaign, enterprises failing to meet environmental standards will have nowhere to hide. The inspection scope also covers regions with severe air pollution such as the Beijing-Tianjin-Hebei region and its surrounding areas, the Fenwei Plain and the Yangtze River Delta region, where many local government officials have been disciplined or even dismissed. It has become an irresistible trend for local governments to effectively carry out environmental protection work. Preventing severe environmental accidents caused by malicious pollutant discharge also requires a real-time networked environmental monitoring and supervision system.

Lucid waters and lush mountains are invaluable assets, and China’s environmental protection industry has ushered in an era of rapid development. Environmental protection is no longer a formality, and the implementation of environmental protection tax has raised higher requirements for environmental governance. It calls for an intelligent, networked, real-time, authentic, effective and accurate environmental monitoring system to meet the regulatory development needs of the environmental protection industry, which cannot be achieved without the support of various IoT technologies. As one of the leading manufacturers in the wireless industry, Guoxin Longxin has been providing reliable, efficient and secure networking solutions for government and enterprise clients. It is our bounden duty to support the real-time environmental monitoring and supervision.

There are numerous industrial parks across the country, where a large number of pollution-related enterprises conduct production activities, yet many have failed to properly address the pollution issues caused by wastewater and waste gas discharge. With the rising public awareness of environmental protection, governments at all levels have raised their environmental requirements, and the treatment and supervision of sewage discharge from industrial and mining enterprises in parks must keep pace with the intelligent real-time management. Traditionally, the offline sewage discharge management relying on manual inspections and random water sampling fails to achieve the goal of timely and effective governance, and problems such as some polluting enterprises illegally discharging pollutants in excess of standards and playing hide-and-seek with environmental authorities cannot be effectively resolved.

In recent years, although real-time online environmental monitoring systems have been gradually promoted, their coverage is still far from sufficient, and there are even issues with data authenticity and real-time performance. Driven by fluke mentality and habitual conduct, illegal discharge remains a serious problem among some enterprises. Upgrading the technological level of water and air quality monitoring and strengthening environmental supervision embody the environmental protection bureau’s “Internet + Environmental Protection” strategy. Moreover, protecting our mother rivers and blue skies is our bounden duty. Constructing an intelligent, centrally managed, real-time “Integrated Environmental Management Online Monitoring System Platform” has become a top priority for the supervision and management of wastewater and waste gas discharge.

The construction of the Integrated Environmental Management Online Monitoring System Platform first requires the deployment of monitoring points across various locations, especially industrial parks, sewage outlets, rivers, pipelines and ditches. These information nodes serve as the nerve endings of the entire system; only through scientific planning and construction of these nodes can the platform perform its intended functions. However, environmental monitoring points are often highly scattered and located in remote areas, posing major challenges in network connectivity and power supply for real-time monitoring. Guoxin Longxin’s wireless networking solutions and lithium battery power supply solutions are specifically developed to address these needs.

II. Design of Environmental Monitoring Networking Solution

The centralized management platform of the environmental protection online monitoring system is a highly comprehensive and integrated system that must be designed and planned in a unified manner:

1. Software Platform of Environmental Protection Online Monitoring System

Wastewater monitoring is the core of the entire sewage management system, primarily responsible for real-time water quality monitoring. Depending on the production conditions of different enterprises and the types of industrial parks (chemical, papermaking, metallurgical, etc.), the online monitored wastewater pollution factors vary. Typical indicators include COD, BOD, pH value, ammonia nitrogen, total phosphorus, TOC (Total Organic Carbon) and others. Suitable online monitoring terminals should be selected based on specific scenarios, and the software platform shall be developed and customized in accordance with the monitoring indicators specified in the Environmental Protection Law and user requirements.

Air pollution monitoring mainly involves deploying sensors for toxic and harmful gases (sulfur dioxide, hydrogen sulfide, etc.), PM2.5/PM10, wind speed, wind direction, temperature and humidity around industrial parks and pollution sources as needed, with real-time transmission of monitoring data realized through high-bandwidth network systems.

Environmental protection online monitoring systems are now relatively mature, and Guoxin Longxin has industry partners nationwide to provide tailor-made solutions for users.

2. Network Digital Video Surveillance System

The advancement of video technology has provided new methods for environmental monitoring. The 1080P HD network digital video surveillance system acts as the “eyes” of the entire system, undertaking the critical tasks of safeguarding system asset security and preventing fraud. HD video footage supports real-time viewing and centralized storage for convenient later retrieval and access.

However, environmental monitoring systems generally do not require 24/7 continuous video surveillance. To save data traffic, the industry standard practice is to adopt local storage combined with AI artificial intelligence recognition and sensor technologies, enabling real-time viewing only when environmental hazards occur.

At present, major video manufacturers have not yet launched dedicated solutions for environmental monitoring, but mature camera products are fully capable of meeting the requirements of environmental surveillance.

Networking Requirements & Solution Design

In response to the networking needs of the above functional systems, the network interconnection system must support multiple networking modes, including direct local device connection, 4G networking, and Internet VPN dedicated lines—this is the core advantage of Guoxin Longxin’s iMAX-4GW300 series 4G metropolitan area network dual-mode wireless system.

Environmental information points (monitoring points, detection stations, etc.) are often located in remote areas with poor communication conditions. Deploying optical fiber networks with long-term carrier line rental represents the largest operational cost of the entire system, while full reliance on wireless communication systems is also restricted by actual environmental conditions and difficult to implement. The optimal solution is to adopt a flexible customized approach combining wired and wireless technologies, with tailored design and implementation based on the conditions of different regions and projects.

Based on Guoxin Longxin’s research and analysis of practical applications in the environmental protection industry, the networking of environmental information points is ideally solved by a hybrid mode of “leased optical fiber dedicated lines + iMAX wireless network system + 4G carrier network”, and Guoxin Longxin’s iMAX-4GW300 series 4G metropolitan area network dual-mode wireless system is perfectly suited for this application.

Specifically:

For major polluters, backbone nodes and key monitoring points with accessible and affordable telecom carrier optical fibers or data dedicated lines, leased optical fiber dedicated lines can be adopted to connect environmental information points to the command center.
In the absence of suitable wired resources or with high rental costs, the iMAX-4GW300 series 4G metropolitan area network dual-mode wireless system is available for networking. A key feature of this system is its dual-mode capability: in areas covered by the iMAX wireless metropolitan area network, it prioritizes the iMAX private wireless MAN connection to save network traffic costs; in areas without iMAX coverage but with available telecom carrier 4G/5G signals, it can access the Internet via carrier 4G networks and then connect to the command center.
It also supports connection via the nearest iMAX wireless metropolitan area network node, followed by access to the environmental centralized monitoring center through 4G networks.

It should be emphasized that for high-definition video surveillance requiring large bandwidth and high capacity, the adoption of 4G is not only unaffordable due to excessively high data traffic costs, but also faces the problem of insufficient 4G network capacity, and may even be unfeasible entirely. The specific technologies and products to be adopted shall be determined based on the resource and environmental conditions of the actual project and tailored to local circumstances for feasible implementation.

The topological schematic diagram of the networking and power supply solution for the environmental protection monitoring and supervision system is as follows:

This solution boasts distinct advantages, stemming from the outstanding features of the iMAX-4GW300 in the following aspects:

Multi-network integration & convergenceThe iMAX-4GW300 enables network connectivity through multiple means including carrier 4G wireless network, wired residential broadband, wireless metropolitan area private network and optical fiber dedicated line. Regardless of the access mode, the device’s proprietary multi-route hybrid networking technology and VPN virtual private network technology integrate all connections into a single unified network. On this virtual private network, remote access to IP devices at different locations is as convenient as operating on a local area network (LAN). This multi-network convergence capability is one of the core advantages of the iMAX-4GW300.
Secure and reliable networkUnlike civilian-grade 4G routers with unencrypted data transmission, the iMAX-4GW300 supports not only wireless encrypted communication, but also VPN end-to-end hardware encrypted communication and software Firewall technology. The superposition of multiple network security technologies ensures its security fully meets the security requirements of government and enterprise clients. In addition, the multi-route feature of the iMAX-4GW300 enhances network reliability, allowing the deployment of hot backup redundant links on demand and greatly improving network reliability at key nodes.
Remote control capabilityThe iMAX-4GW300 is equipped with a TCP/IP interface to connect and manage all manageable third-party devices (IP cameras, IP broadcasting, etc.), and also provides 2 external GPIO digital interfaces to control the start and stop of external devices such as LED lights, motors and sensors. For details, refer to the article “Communication + Control Integration, Ideal Choice! Cost-effective Solution for Remote Interconnection and Control”.
Enhanced practicalityThe iMAX-4GW300 is designed with multiple network ports to connect multiple on-site devices and instruments simultaneously, such as flow velocity sensors and water quality monitors, making it highly practical for the configuration of environmental monitoring points.
Superior cost-effectivenessThe iMAX-4GW300 features a compact size, light weight, low power consumption and wide temperature tolerance. Its multi-network connectivity reduces the overall system cost significantly. Multiple iMAX-4GW300 devices can be directly interconnected via wireless private network modules, and a single 4G SIM card enables networking for multiple surrounding monitoring points, resulting in substantial savings on network fees.

III. Power Supply Solution for Environmental Monitoring System Information Points

Environmental information points (monitoring points, detection stations, etc.) are often located in remote areas, and ensuring the availability and stability of system power supply is also a key challenge in system construction. Where mains power is unavailable, solar power supply systems serve as the optimal solution.

Guoxin Longxin’s iPower2000 lithium battery new energy power supply system effectively addresses the power supply challenges of environmental information nodes. Green and eco-friendly solar and wind energy provide clean power for the protection of rivers and lakes. The iPower2000 is an integrated off-grid independent new energy power supply system, specially designed to solve the power supply problems of electronic devices such as wireless network systems, video surveillance points and information monitoring points in the IoT industry (especially the security industry) under decentralized and field environment conditions.

This series of products solves the long-term power supply problem for scattered monitoring points and information collection stations along rivers, ditches and around industrial parks. With lithium-ion batteries as the core and high-performance monocrystalline silicon solar panels configured, the system boasts advantages such as a simple structure, compact size, light weight, long service life and high cycle charge-discharge times compared with conventional wind-solar hybrid power supply systems, making it ideally suited for the field application of IT systems.

Based on years of experience in the successful delivery of such projects, Guoxin Longxin can tailor the optimal design of wireless networking systems for environmental protection monitoring and provide the most suitable solutions for customers.

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