Reservoir Wireless Security Monitoring Solution

China is a large country with abundant water resources. It has a large number of large and small reservoirs. These reservoirs play an important role in flood prevention and disaster reduction and water environmental protection. Therefore, the scientific, safe and automated management of reservoirs has become very urgent. demand. Because of the large area of ​​the reservoir and the complex terrain, it is very difficult to establish the security monitoring system through the erection of cables. Therefore, it is imperative to use wireless monitoring to monitor the reservoir.

Reservoir wireless security monitoring system to achieve the function:

1. During the flood season, the safety of the reservoir is guarded. Pay attention to the water level of the reservoir. If the water level reaches the warning line and there is a danger, immediately call the police.

2. Prevention of key areas in reservoirs, always pay attention to the normal work and stability of gates and dams.

3. Real-time remote monitoring of the surface conditions of reservoirs: whether there are floating objects (such as white garbage) or drifting objects (such as leaked crude oil) on the water surface.

4. Real-time remote monitoring of reservoir shore conditions: whether objects (such as people and beasts) on the shore enter dangerous areas (such as gate gates and embankments) and whether there are any suspicious circumstances (if someone wants to destroy the reservoir)

5. The quality of the water in the reservoir can be detected at any time, and the information can be transmitted to the remote site. If the water quality is found to exceed the standard, an alarm will be given immediately.

6. Real-time monitoring of reservoir weather conditions

7. The voice communication between the remote control center and the reservoir site can achieve long-distance command work when encountering the situation.

8. The reservoir gate can be controlled directly in the monitoring room to carry out water resource allocation.

System solutions:

The entire security monitoring system is mainly composed of three parts: the front end part, the transmission part, and the central part.

The front end of the front end is mainly composed of a camera, a high-speed ball, a gimbal, a protective cover, a video encoder, and a lightning protection, a mounting bracket, and an infrastructure for the entire front end.

A camera selection: generally use high-resolution, low-light color camera or high-speed ball; monitor a large range of places, the use of high-power long focal length lens; shield optional rain thermostat, size and capacity to accommodate the next camera and long Focal length lens.

B. Selection of PTZ: Choose durable, high stability and strong wind resistance. When the shots selected are all large, a large pan/tilt head must be selected and the payload should be greater than 60 kg. In order to achieve the flexibility of manipulation, choose the PTZ with preset position, and work with the long-focus lens with preset position. PTZ cameras with preset positions can monitor and monitor key accident-prone areas, enabling the entire surveillance system to be targeted.

C video encoder selection: Because of the use of digital wireless transmission, the front end is best to directly use the digital high-definition camera, but there are some special requirements must use special cameras, you can use the camera + video server, The analog signal is converted to a digital signal and then transmitted. Generally choose VS series D1 video encoder, this high-performance network video codec product for Ethernet real-time transmission of digital audio and video multimedia server, it can use Ethernet (LAN / WAN) real-time image and sound at the same time Through the network transmission; VS601HD series D1 video encoder is used for front-end monitoring points that need to access multiple cameras, providing flexible high-performance video and audio access solutions.

D. Lightning protection: Lightning protection is mainly composed of video lightning protection, power supply lightning protection, and antenna feed lightning protection. Video Surge Arrester is one of the more commonly used surge protectors. It is an important embodiment of internal lightning protection and also belongs to the category of weak current systems. Mainly to prevent the video surveillance system from being subjected to lightning currents induced along the line and installed lightning protection products. Antenna lightning protector is a kind of surge protector, which is mainly used for lightning protection of feeders. The lightning protection of the power supply prevents lightning and other internal overvoltages from invading the device and causing damage. Antenna lightning protection devices, also known as antenna signal lightning protection device, antenna arrester, antenna line lightning protection device, antenna feeder lightning arrester. In actual selection, the frequency range, insertion loss, and maximum discharge current of the product are the primary considerations.

The entire monitoring system of the transmission part consists of wireless bridges, high-definition network cameras (or special cameras), and long-distance backbone networks.

In other words, the images collected by different monitoring points are modulated and transmitted through the wireless bridge channel, and the switch is used to receive the forward-return signal from one or more wireless bridge point-to-point or point-to-multipoint on the roof of the reservoir monitoring room. Enter NVR or computer for management and storage. At the same time, it is also possible to separate all the way through the long-distance backbone network bridge back to the remote, such as the Water Conservancy Bureau's general dispatch room, where it can also display real-time images captured by the front-end camera, transferred to the stored drawings.

The central monitoring and command center is the control, image display and image recording center of the entire system. The monitoring center can provide commanders and dispatchers with comprehensive, clear, operable, recordable and replayable live real-time images.

The central equipment (reservoir monitoring center video monitoring and management system) is decompressed by the video decoder, and the simulated video signal is finally restored. After the microwave despreading, the corresponding decoding software can be installed through the computer and the computer (PC type hard disk recorder) can be used to soft-decompress the video. , And the computer also supports video, playback, management, cloud mirror control, alarm control and other functions. The center equipment consists of a video decoder, a monitor wall, a PC monitoring host, a main monitor, and a master/separate control keyboard.

The reservoir wireless security monitoring system transmits real-time data, images, sounds, videos and other basic information to the monitoring center in real time, which greatly improves the accuracy of the monitoring work, improves the quality of traditional monitoring work, and achieves real-time acquisition of real-time hydrological information. , monitoring and unified management.

Design:

If the reservoir area monitoring center has network conditions, it can upload images directly to the Internet through the Internet. In this way, real-time screen conditions can be seen on any terminal that can access the Internet through the cloud service.

Project features:

Through several practical applications of water conservancy departments, reservoirs are flood-fighting in flood-prone areas, water flow and water quality are monitored in important sections of rivers, unmanned maintenance of reservoirs, remote control, and automatic lifting of gates. The reservoir wireless security monitoring system fully meets water conservancy requirements. The department's requirements for the technical indicators of the monitoring system are technologically advanced, practical, stable, and easy to operate. It has been suitable for large-scale promotion, allowing science and technology to bring more safety and convenience to people.

Reservoir sites generally have a wide geographic distribution, complex terrain, and remote locations. They are located at a distance from the monitoring center. Traditional wired connections are not only costly and have a long construction period, but are often difficult to erect due to obstacles such as rivers and mountains. Cable, and more importantly, cable transmission is relatively poor in disaster resistance. In harsh environments such as strong winds, heavy rain, and bursts, the cable lines are easily destroyed, and hydrological monitoring information cannot be delivered in time, which is difficult to meet the high level of protection against hydrological information security. Reliability requirements.

The reservoir wireless monitoring system is more resistant to disasters, ensuring that the hydrological information collection system can operate normally under all kinds of adverse weather conditions; it is easy to install and does not require laying of network cables, which can save a lot of investment; it is highly flexible and expandable Sex, through the establishment of monitoring cameras and wireless base stations in the locations to be monitored, the rapid expansion of the system.