Analysis of Application of Wireless Security Monitoring Technology in Freeway

The rapid development of China's economy in recent years has made China's road construction, especially the construction of expressways, a new level. With the construction of modern highways, a new generation of highway video surveillance systems has increasingly become an important means of highway supervision.

Freeway Security Monitoring Technology In recent years, more and more high-speed monitoring systems have put forward newer and higher demands. The products of the expressway monitoring system are constantly being updated, such as the 480 lines from the previous years to the present 600 lines, and the evolution from the traditional analog cameras to the current digital high-definition megapixel cameras. The control system has also evolved from a single management model. To the current video networking unified management model.

Analysis of Highway Digital Video Surveillance System The development of expressways in China is very rapid. The replacement of surveillance products is also relatively rapid. The simulation system and digital system of the existing expressway monitoring system coexist, and at the same time the technical level of the expressway monitoring system is improved, it is also required. Take full account of the existence of existing analog monitoring systems. In the process of upgrading and renovating some highways using analog surveillance systems, it is not possible to have all the systems in the clinics - and this will result in a huge waste of investment. How to integrate the diagnostic-system usefulness into the system and take into account the emerging application of technological functions will be a test of the excellence of a surveillance system.

At this stage of the network digital video surveillance technology, the status quo of the development of expressways should be fully taken into account, and a set of digital video surveillance systems tailored for the expressway monitoring industry. Such a system not only has many excellent monitoring technologies of today, but also can be perfectly compatible with the analog matrix monitoring system.

The video surveillance system of highway network video surveillance system is considered as an integral part of the electromechanical system engineering of highways and plays an irreplaceable role in highway management. The deployment of surveillance systems on highways with large traffic flows and fast speeds has become a high speed. An important means of modern highway management. During the “Eleventh Five-Year Plan” period, the state issued the “National Strategy for Informatization Development from 2006 to 2020”. The Ministry of Communications has determined the development direction of traffic informatization according to the development strategy, and put forward higher requirements for information system construction of monitoring systems. - On the basis of highway video surveillance, digital and networked video transmission equipment is used to achieve high-quality signal transmission. And set up a provincial network monitoring center to conduct unified monitoring, management, and dispatch of all expressways in the province, and integrate with office automation systems, geographic information systems, comprehensive emergency command and dispatch platforms, call centers, and other data systems. Abnormal conditions can be linked with other information systems, quickly and effectively adopt emergency rescue plans, and improve the overall level of operations management.

A brief discussion on the interval speed measurement system of the inter-vehicular speed measurement system is based on advanced vehicle capture technology, vehicle license plate recognition technology, and network communication technology to realize a new type of speeding illegal evidence collection system. The system determines whether speeding is over by calculating the average speed of the vehicle passing through the road, effectively solving the easy evasion of single-point speed measurement, and more effectively controlling the occurrence of illegal activities such as speeding and reducing speeding.

Through the automatic capture system of vehicles installed on the expressway, it continuously captures vehicle pictures, and recognizes and records vehicle information that passes on multiple sections in real time, including vehicle number plates, passing time, panoramic vehicle pictures, speeds of various sectional points, etc. This information is uploaded to the central processing platform through the network (wired or wireless), comparing the travel time of the same vehicle in two sections in the same direction, and then calculating the average speed of the vehicle through this section based on the distance between the two sections. According to the average speed to determine whether speeding. If there is overspeed behavior, the illegal vehicle data and pictures will be automatically audibly and visually alarmed through the background management platform, and can be sent to the nearby and on-site duty traffic police as required by SMS or posted on the expressway display. On the screen, promptly inform and warn more vehicles against illegal vehicles. All illegal vehicles and related pictures obtained by the system will be provided as illegal sources to the offending system for further processing.

Wireless monitoring has gradually become an important part of the highway video surveillance system due to its simplicity, speed, and low environmental impact. Axelwave's wireless network is dedicated to providing a stable and excellent wireless network transmission system and establishing a stable and efficient freeway wireless monitoring system.

The application of wireless monitoring system in highways can be divided into freeway mobile wireless monitoring and wireless transmission of new monitoring points. The Axelwave wireless network tailors the specific wireless to the characteristics of these applications. Network monitoring solution.

For highway mobile wireless monitoring, it is generally applied in a certain segment of a highway. The patrol car can transmit the patrol video situation back to the freeway management center in real time.

For such applications, we can first set up wireless equipment along the expressway to complete the wireless signal coverage of this expressway. These wireless devices that are set up along the line, and then through the wireless network transmission mode or wired network transmission mode, establish a corresponding data transmission channel with the monitoring and management center. When the patrol car patrols on this freeway, the car-mounted patrol surveillance video is transmitted through the vehicle-mounted Axelwave support for seamless roaming of the on-board terminal and the wireless equipment on the roadside to establish a connection. control center. Axelwave's car-based seamless roaming terminal supports high-speed roaming switching, ensuring that the patrol car can continuously transmit video back to the management center on the highway.

For the video transmission of the newly-built monitoring points on the expressway, it is unrealistic to lay the cables for the newly-built monitoring points next to the freeway. The wireless video transmission solution of Axelwave wireless network will undoubtedly solve this problem. Preferred.