Pay close attention to changes in water conditions and do not relax, use high-tech monitoring methods

In the past few days, continuous rainy weather has occurred in the middle and lower reaches of the Yangtze River in my country, with heavy to heavy rains in some areas. In the face of continuous rainfall, hydrological monitoring departments in various places are working all night, paying close attention to changes in water conditions, and actively strengthening the application of high-tech equipment to stay on the front line of flood control and diversion. The application of "hard-core" scientific and technological means will also help hydrological monitoring to be measured, accurately measured, and reported quickly within the true time limit, ensuring that the general public, enterprises and factories can safely survive the flood season.

For example, in the Nanjing Hydrology Department, online flow detection equipment such as H-ADCP, V-ADCP, high-frequency side scan radar, and image analysis have been put into use. For small and medium-sized rivers and key regional rivers, emergency monitoring is also carried out with navigational ADCP, handheld radio current meters and other equipment.

In addition, modern means such as GIS platforms, water situation consultation systems, and automatic flood reporting systems adopted in some areas enable forecasting and reporting personnel to grasp accurate water level information of various hydrological stations anytime and anywhere, providing Flood reporting and water regime consultation provide greater convenience. Among them, the hydrological monitoring system for small and medium-sized rivers plays a very important role.

The hydrological monitoring system for small and medium-sized rivers is mainly used to monitor the water conservancy operations of rivers and lakes. With the help of various detectors, digital information such as temperature, humidity, wind direction, wind speed, rainfall, water volume, frequency diagrams or pictures of water conservancy is detected, and the data is transmitted through the DTU front-end monitoring equipment in a wireless (industrial IoT card) secure manner. Uploading to the monitoring center provides convenience for monitoring personnel to comprehensively understand various hydrological data information, monitor on-site conditions in a timely manner and accurately judge the status. On this basis, hydrological monitoring personnel can direct vehicles and professionals to handle various maintenance and repair work to ensure that people's normal life is not affected.

Traditional hydrological monitoring mainly relies on manual inspection and recording, and data processing relies on manual processing and judgment, which is time-consuming, laborious and error-prone; at the same time, the collection, processing and transmission of hydrological information Its real-time performance and accuracy are poor, and it cannot meet the needs of modern hydrology. Against this background, automation technology has also begun to be used in hydrological monitoring to help achieve the goal of hydrological monitoring automation.

When automatically monitoring water level changes, detectors, sensors and other equipment are indispensable. Water level sensors used for automated monitoring mainly includeElectronic water gauge, float water level gauge, pressure water level gauge and ultrasonic water level gauge, etc. These sensors can be connected directly to the RTUto automatically monitor water level parameters.

Install an integrated automatic water level gauge, set up a temporary water gauge, and carry out water level monitoring and reporting in an orderly manner; install an integrated automatic rain gauge, debug the Beidou satellite receiving system, and automatically receive and display rainfall; measure Ships, GPS, and ultrasonic depth sounders work together to carry out underwater topographic surveys of rivers... It is the comprehensive use of intelligent measurement equipment, positioning systems, data transmission technology and other measures that make early flood prevention work smoother.

Thank you to the "flood control sentries" who stood firm in the wind and rain and protected the homes where people live. We would like to remind all flood prevention personnel to pay attention to heatstroke prevention and cooling during the flood prevention period and protect their own safety. In addition, everyone should always pay attention to weather changes when traveling, bring rain gear, and avoid dangerous rivers and lakes to avoid accidents.