At present, the monitoring demand of domestic expressway is very extensive and in-depth, and the expressway monitoring system has developed into a complex system integrating various advanced sensing technologies, data analysis and intelligent early warning. Its core goal is to ensure traffic safety, improve traffic efficiency, and assist management in timely decision-making.
A complete highway monitoring system needs to cover multiple functions, including:
Automatic detection of traffic incidents: Real-time detection of emergencies on the highway, such as traffic accidents such as multi-vehicle rear-end collisions, vehicle retrograde, falling or throwing foreign objects on the road, abnormal vehicle parking, pedestrians breaking into the highway, and traffic jams, etc. situation.
Road condition monitoring: Real-time collection of road network operating status data, such as traffic flow, vehicle speed, lane occupancy rate, and monitoring of road conditions (water, icing) and visibility under severe weather such as rain, snow, and fog Wait for information to provide reference for safe driving.
Traffic safety and law enforcement: Automatically identify and collect evidence for illegal acts such as speeding, illegal occupation of emergency lanes, and non-compliance with prescribed lanes, assist traffic control departments to achieve off-site law enforcement, and improve highway traffic order.
Facility status monitoring: Monitor the operating status of key infrastructure such as tunnels, bridges, and high slopes, and discover hidden dangers such as structural abnormalities and equipment failures in time to ensure the safe and stable operation of infrastructure.
Highway monitoring network of the three major difficulties, why the traditional program is difficult to deal?
To achieve the above functions, the front end needs to deploy a large number of high-definition video cameras, radar sensors, weather monitors and other equipment, and through the network will be massive data back to the back-end platform in real time for analysis and processing. In this process, network communication is an indispensable support link. However, because the highway has the characteristics of long linear distribution, complex environmental conditions and high reliability requirements, its monitoring system faces more severe challenges than urban monitoring in network deployment.
Environmental and Geographical Challenges
Highways often run through tens or even hundreds of kilometers, and may pass through mountainous areas, bridges, tunnels and other complex terrain along the way, so the wiring distance is long and the span is large. If the use of wired optical fiber or network cable to connect the monitoring points, not only the construction difficulty and cost is very high, but also in some terrain conditions wiring is almost impossible to achieve.
In addition, the expressway is in a field environment, and the equipment needs to withstand severe conditions such as high temperature, high humidity, severe cold, lightning, heavy rain, sand and dust, and requires stable operation 7 × 24 hours a day. Ordinary commercial-grade network equipment is difficult to operate reliably in such an environment for a long time.
Network Architecture and Performance Challenges
Expressway monitoring needs to transmit a large amount of high-definition video stream data at the same time, and hundreds of high-definition 1080P or even 4K cameras transmit back video at the same time, which puts forward extremely high bandwidth requirements for the backbone network. However, real-time early warning of traffic incidents requires the network to have low delay characteristics in order to ensure that the monitoring center can obtain on-site images in the first place.
In addition, the monitoring network is regarded as the "lifeline" of the highway, and any interruption may miss the accident alarm or important data. Therefore, the high-speed monitoring system has almost strict requirements for network reliability. It not only requires network links to be redundant and backed up as much as possible to prevent single point failures, but also can be switched in time when any node fails or link congestion to ensure that video data transmission is not interrupted.
Security and Management Challenges
Highway monitoring points are scattered in various places, and traditional operation and maintenance requires personnel to drive to and from various monitoring stations for inspection and maintenance. Once a front-end device or network node fails, remote location and troubleshooting are very difficult, and on-site maintenance personnel may have to travel long distances to the site to solve the problem, resulting in low operation and maintenance efficiency and untimely response.
In addition, the monitoring system carries important video and business data, and the data security in the transmission process is also very important. In industry applications, it is often necessary to meet strict security specifications, such as using encryption algorithms that comply with national security standards and preventing unauthorized remote access, which places high demands on the security of the monitoring network.
Aweseed bring highway monitoring networking solutions, lower cost, more flexible deployment!
In response to the above-mentioned challenges of highway monitoring, Aweray's Aweseed has launched a remote networking video monitoring solution based on SD-WAN technology. Compared with the traditional private line or VPN scheme, the Aweseed scheme is more flexible and lower cost, and can fully adapt to the needs of highway scenarios.
Aweseed advantage 1:4G/5G flexible network access, industrial-grade design to meet the challenges of harsh highway environment
In the face of cabling challenges in complex terrain conditions, Aweseed provides R300 series industrial routers with built-in support for 4G/5G cellular networks. In other words, each expressway monitoring point does not need to lay a long-distance wired network, and only needs to insert a 4G/5G traffic card to access the network. This wireless networking mode greatly reduces the difficulty and cost of wiring construction in mountainous areas, bridges, tunnels and other areas, allowing the monitoring system to rapidly deploy across geographical obstacles.
At the same time, the R300 series routers adopt industrial-grade standard design, with high-level protection capabilities (dustproof, waterproof, surge resistance, etc.), and can operate stably in harsh outdoor environments. Whether it is high temperature and humidity in hot summer, high cold and frost in winter, or frequent thunderstorms, R300 can guarantee 7 × 24 hours of uninterrupted work, reliably adapt to the harsh environment along the highway, and solve the problem that traditional commercial equipment is difficult to operate stably for a long time.
Aweseed Advantage 2:SD-WAN off-site networking for any road section, regional network environment
In order to meet the strict requirements of high-definition video backhaul on network bandwidth and real-time performance, the Aweseed SD-WAN scheme adopts a flexible cloud management mode in the network architecture. After deploying Aweseed routers at each highway monitoring point, these terminals can form a virtual local area network through simple configuration of the Aweseed cloud platform.
If the remote monitoring center needs to centrally monitor each point of the highway, it also only needs to deploy Aweseed routers. If it is deployed through bypass, plug and play can be realized without changing the existing network architecture of the monitoring center. While landing quickly, it also avoids a series of risks caused by changes in the network architecture.
It is worth mentioning that the Aweseed can also provide a unified platform management, to achieve multi-brand camera compatibility, unified viewing, with local routers and camera unified management entrance.
In this way, the monitoring data distributed in different road sections, different provinces and cities can be gathered to the headquarters center at high speed to facilitate unified real-time monitoring and data centralized storage, instead of being limited to their own scattered local networks.
Aweseed Advantage 3: Self-developed technology to ensure high-speed monitoring, high-bandwidth, low-latency transmission
In addition, considering the complex and changeable network environment along the highway, such as the cellular signal in tunnels or remote sections may be unstable, Aweseed R300 series routers also support dual network access and multi-operator automatic switching.
The Aweseed R300 series supports 4G/5G dual cards, which can realize dual-link backup and is further compatible with Aweseed triple-access cards. It can automatically switch between the networks of China Mobile, China Unicom and China Telecom according to preset strategies, and select the network with the best current signal quality for communication.
The Aweseed SD-WAN uses global intelligent link technology to ensure the quality of data transmission. After networking, it will automatically detect the current network status of the terminal and connect to the node server line with the best quality nearby, so that the monitoring equipment in different locations has the best network. The Aweseed has multiple dedicated high-speed transmission channels, which are directly connected to the backbone network resources of mainstream cloud service providers. When a path is congested or fails, the system automatically switches to the standby line to achieve millisecond link disaster tolerance and redundant backup.
In addition, in order to further improve the video transmission effect in the weak network environment, the Aweseed SD-WAN scheme is built with a self-developed weak network optimization anti-packet loss algorithm, which monitors the packet loss rate and delay of the current link in real time, and dynamically adjusts the transmission rate of video data and the forward error correction strategy. When the network congestion, high packet loss and other bad conditions are detected, the algorithm can intelligently take measures to reduce video lag and delay, and significantly improve the efficiency and stability of data transmission.
Thanks to this, even in the environment of large fluctuations in the cellular network around the highway, the Aweseed scheme can also minimize the end-to-end delay of the surveillance video and meet the demanding real-time requirements of video surveillance in important sections.
Aweseed Advantage 4: Centralized cloud deployment, management, no need to arrive on site
In view of the pain point of remote operation and maintenance difficulties of the traditional high-speed monitoring system, the Aweseed SD-WAN scheme provides a perfect cloud centralized management platform, all remote Aweseed terminal equipment is centrally accessed, and the administrator can remotely perform batch configuration and maintenance operations on the equipment, such as unified distribution of configuration files, batch upgrade of firmware version, regular restart of equipment, cloud backup configuration, etc.
In the past, the work that needed to send people to debug one by one can now be completed through the cloud, greatly reducing the number of times that operation and maintenance personnel go to the site of each high-speed section, improving operation and maintenance efficiency and reducing operation and maintenance costs.
In addition to device management, the Aweseed also provides a wealth of monitoring and alarm mechanisms. The system collects the running logs of each router, allowing operation and maintenance personnel to customize key monitoring items and alarm thresholds. Once the equipment is offline, abnormal traffic, etc. exceeds the threshold, the system will immediately push the alarm notification through the preset channel (supporting common tools such as enterprise WeChat, DingTalk, flying books, etc.) and send it to the designated responsible person to ensure that hidden dangers are found and handled in the first place.
Aweseed Advantage 5: Data Encryption, Flexible Authorization, All-round Security
Finally, in terms of data security, the Aweseed SD-WAN scheme adopts full encryption transmission. All surveillance video and control signaling are encrypted at a high level during transmission, and the national secret algorithm is supported to ensure that the data is not eavesdropped during public network transmission. In addition, in addition to the terminal being verified to join the networking network, the administrator can also flexibly formulate custom access policies according to needs, and finely control the remote access rights and access time periods of different users to prevent unauthorized equipment or personnel from connecting to the monitoring network.
If the project has higher internal and external network isolation requirements, the Aweseed solution even supports privatization and deployment in the user's own data center to achieve a completely closed intranet video private network. With these security measures, the Aweseed scheme can meet the strict requirements of highway monitoring for data security and authority management, so that the management department can safely carry out remote monitoring and operation and maintenance without worries.
Generally speaking, Aweseed the remote networking video monitoring solution based on SD-WAN, which provides an effective way to deal with various network difficulties in expressway scenes. This solution can effectively reduce the deployment and operation and maintenance costs while improving the reliability of expressway monitoring system, and build a monitoring network with high reliability, high safety and easy operation and maintenance for traffic management departments, provide solid network support for smart transportation and smart city construction.