Nanjing: Internet of Things monitoring equipment will be installed on some major rivers from next month

Starting next month, some major rivers in our city will gradually install water environment IoT monitoring equipment to monitor the water quality of the rivers around the clock and report monitoring data to the mobile phone management software platform every 15 minutes, which is equivalent to equipping the rivers with a water quality monitoring device. the sentinel. Once abnormal water quality is detected, the system will automatically notify the river chief.

This set of water environment IoT monitoring equipment was developed by a new R&D institution just established in February this year - Nanjing University Sensing and Imaging Technology Research Institute and the industry's leading enterprise - Jiangsu Nanda Five-Dimensional Electronic Technology Co., Ltd. Water environment IoT monitoring equipment includes small water quality monitoring stations on the ground and sensors extending into the water. The sensor looks like an elongated microphone. The monitoring station is like a square box with a solar panel on it, which can automatically draw power from the sun.

Pan Weisong, deputy director of the institute and chairman of NTU Five-Dimensional Company, said that the company’s technology in the field of advanced sensing for the Internet of Things is at the world’s leading level. Among them, the "Water Environment IoT Monitoring System" is low-cost, easy to deploy, and simple to maintain. As the only IoT monitoring product, it was selected into the "2018 Key Promotion Guidance Catalog for Advanced Practical Water Conservancy Technologies" of the Ministry of Water Resources. By gridding extensive river waters and installing high-resolution IoT water quality monitoring equipment along the river, continuous and full-process dynamic management of river water quality can be achieved. For example, it can locate pollution sources and analyze suspected illegal discharges and other incidents; through long-term accumulation of water quality data in black and smelly rivers, it can provide information on the main pollutants in the river, pollution levels, long-term pollution changes, and river pollution distance, etc., to facilitate river regulation The plan provides the right medicine; through information technology, it compares changes in water quality, records the project implementation process, builds public comment channels, and tracks long-term management, so that the black and smelly river improvement work can be standardized and evaluated, and documented, etc.

As early as April last year, this set of equipment had been piloted in the Longjiang River and other rivers in Gulou District. At the beginning of this year, it was also deployed in the Jinchuan River, Shili Changgou, Yigan River and other rivers. The staff clicked on the "Internet of Things Monitoring System for Comprehensive Environmental Management" on their mobile phones. On the river distribution map, bright spots flashed. Each bright spot was a set of working water environment IoT monitoring equipment. Click on monitoring point No. 59 located on the Yigan River in Lishui. It shows that the water quality data such as ammonia nitrogen, dissolved oxygen, turbidity, and redox potential at the current site are normal. In addition to providing real-time water environment values for each site, the system also automatically generates weekly and monthly reports. Last year, the water environment IoT monitoring station of a river in Gulou District "uncovered" a company that secretly discharged sewage after 12 midnight based on the water quality change curve for a continuous week.

"Next, the institute will be committed to the research and development of ecological environment IoT technology based on the water environment IoT, including the atmosphere, soil, etc., in the city's main rivers (sections) and lakes, select key locations, and deploy a large number of densely packed water quality Monitoring equipment, deploy atmospheric monitoring equipment at a high density in main urban areas and key development areas, and continuously and dynamically monitor environmental pollution throughout the entire process." Pan Weisong revealed that compared with traditional manual monitoring, the ecological environment Internet of Things has wide coverage, high monitoring density, and pollution control. The advantages of not omitting incidents are the premise and foundation for establishing a monitoring and early warning mechanism for resource and environmental carrying capacity. On the basis of comprehensive acquisition of monitoring data, the institute plans to conduct analysis and research on the distribution of ecological environment quality, traceability of environmental pollution, and the impact of various factors on the overall ecological environment. At the same time, we will cooperate with relevant institutions and universities to carry out research on environmental big data and artificial intelligence applications.

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