Affected by the recent rainfall, the water level of the middle reaches of the Yangtze River and the Dongting Lake continued to increase gradually. The Jiujiang section and the Poyang Lake water level exceeded the warning level, and the water level of the Three Gorges Reservoir also rose. With the arrival of June, the country has gradually entered the flood season.

On June 3 and 4th, two consecutive heavy rains in Jilin Province caught many people who traveled by surprise. Although they did not have a great impact on traffic, they did not put too much pressure on the flood prevention work. It is reported that due to the recent rainfall, the water level of the middle reaches of the Yangtze River and the Dongting Lake continue to rise slowly. The water level of the Jiujiang section and Poyang Lake exceeds the warning level, and the water level of the Three Gorges Reservoir also rises. With the arrival of June, the country has gradually entered the flood season, and all regions have entered the flood prevention and flood protection work.

Security monitoring is an important measure for flood prevention work. Early and timely application of the data in water conservancy monitoring plays a highly complementary role in flood control data deployment.

Real-time monitoring of key water positions It is understood that from April onwards, Changchun City, Jilin Province began to use the urban flood prevention command information platform system to carry out detailed task assignments and personnel scheduling for this year's flood prevention work, and to achieve multi-party video conferences. A video conference was held with the city's nine flood control units, video surveillance of the city’s main water areas (water level monitoring was installed in 21 key water areas in the urban area), and real-time monitoring of meteorological and hydrological data.

Therefore, entering the heavy rainfall since June, the Changchun City Flood Control Command Office has clearly and intuitively learned the real-time accumulation of water in each water position through video surveillance. Through the real-time water level comparison function, the depth of accumulated water at each water point can be checked. Guided flood prevention command and dispatch, timely warning and quick response of urban public opinion.

According to Yang Xiufu, Director of the Drainage Department of Changchun Urban Facilities Construction Co., Ltd., the urban flood prevention command department has also specially developed a mobile phone photo transmission system. Through the smart phones equipped by all employees, various scene conditions are transmitted to the command and dispatch in real time through the mobile phone camera. In the platform system, it responds to the command and dispatch department for the first time. At the same time, Changchun City also invested 5 million yuan this year to introduce a multi-functional drainage dredge vehicle that can quickly clean the sewage pipeline.

High-definition picture transmission real-time monitoring of public opinion reporter learned from the company's technical department in Beijing, Mr. Han was informed that the flood control system is mainly composed of monitoring front-end, server systems, terminals, etc., at the same time, including the detection of alarm equipment and the latest technology of the Internet of things. According to reports, the company’s instant image communication system is well-utilized in many parts of Jilin. The system relies on the mobile communication network and the Internet to achieve wireless, remote timing image data transmission, front-end triggering, remote random capture pictures, etc. The system is based on the IP network, using high-definition pictures as an information carrier for transmission, achieving low bandwidth conditions Real-time high-definition monitoring.

Mr. Han introduced to reporters that the flood prevention monitoring system not only has to adapt to a variety of outdoor bad weather but also to adapt to a variety of network environments to meet low-bandwidth transmissions. Through wired access modes such as xDSL and CableModem, high-definition picture transmission is adopted as the monitoring mode. At the same time, the monitoring system can clearly and accurately communicate the specific conditions of the monitoring target, and can meet the real-time attention and situation of multiple users on the monitoring site on the public network. Tracking, flood control commanders can monitor the dam and the surrounding conditions through the Internet anytime, anywhere.

"Using high-definition picture transmission monitoring systems need to support a variety of monitoring modes. That is, support for time-lapse shooting, remote control shooting, etc. provide more ways for fixed-point monitoring." Mr. Han added: "At the same time, you can also Wi-Fi wireless LAN, GPRS and other wireless network access methods, with the digital camera associated with the front controller support personnel to carry it, support manual shoot that pass, this time the controller automatically from the digital camera to obtain photo data and send data to the Designated server, on-site personnel can report on-site scenarios at the first time, which will facilitate real-time command and disposal."

Detection alarms escort hydraulic engineering to relieve pressure in the flood season In recent years, people have fully realized the flood control capabilities of dams and reservoirs and tried their best to exert their flood control effects. During the flood season, floods were dispatched scientifically, reservoirs were used to control discharge, and flood peaks were intercepted to ensure downstream flood protection safety and reduce flood losses. It can be said that the bearing capacity of the reservoir has affected the flood prevention capacity of nearby waters to some extent.

According to Jing Xingquan, a marketing manager of a company in Shenzhen, large-scale water conservancy facilities, such as dams and reservoirs, are responsible for flood control, water storage, and power generation. Once they enter the flood season, they can reduce flood peaks through their strong flood storage and interception capabilities. ,Reducing the pressure of floods and thereby reducing disasters in the downstream areas.

Under normal circumstances, security equipment such as dams, reservoirs and other water conservancy facilities include water level alert alarms, gate alarms, remote monitoring (water and land), water quality monitoring alarms, and real-time weather condition alarms. Jing Xingquan introduced to reporters that the long-distance video surveillance system for water conservancy needs to be able to meet the supervision and management requirements of the higher-level water conservancy departments in understanding the real-time conditions of the front-end important water conservancy projects and scheduling applications. The monitoring level belongs to the industrial level, and therefore the product performance and system stability Sex has very high demands. Product hardware is divided into front-end equipment, transmission equipment and terminal display three parts.

Jing Xing all told reporters that the current general dams and large reservoirs have strict security measures and advanced security equipment. For example, the Red Rock Reservoir and Xinlicheng Reservoir in Jilin have their front-end products and detection and alarm devices. Among them, cameras installed in important parts of reservoirs and dams can be classified into three types: low-light fixed cameras that are used in dim light and large monitoring areas; low-light applications that can be used to track vehicles and people in real time in small-area areas Automatic zoom controllable dome camera; large telephoto camera for remote viewing from a few kilometers away. There are several ways to prevent the alarm system of the perimeter of the reservoir dam: using infrared radiation, passive infrared, perimeter fences, vibration optical cables and other technical products to prevent malicious invasion and destruction. In addition, access control systems are installed at the entrances and exits of key parts, such as more advanced face recognition technologies. These subsystems are linked with surveillance and combined with central image display to avoid false alarms and ensure the effective dispatch of police forces.