Customized road monitoring will become mainstream

Foreword With the rapid development of the urban economy, there has been a dramatic increase in transportation vehicles. Although the road infrastructure has been greatly improved, with the improvement of living standards, the situation of road traffic congestion has become increasingly serious. This has led to an increase in the management of the traffic police and the workload of police units.

In order to improve the above situation, cities are gradually promoting the implementation of real-time traffic situation image monitoring system plans for all major traffic crossings, that is, installing image monitoring equipment at all important traffic crossings in the city, and uploading road traffic conditions to roads in real time through image transmission channels. Monitoring command center, center duty personnel can understand the road conditions in each area in order to adjust the number of vehicles at each intersection to ensure smooth traffic, to monitor the violation of road vehicles, timely detection and arrangement of road traffic and so on.

Definition of urban road monitoring system The urban road is the basic skeleton of the city. In a sense, the urban road monitoring system is the skeleton of the urban security monitoring system. As the main force of road traffic management, the traffic police has undertaken urban road traffic television monitoring, motor vehicle traffic monitoring and snapping, smart bayonet and other system construction. The monitoring scope of these three systems are motor vehicle lanes. The monitoring targets are motor vehicles. The important part of the urban road monitoring network system has a very important role in the construction of the urban public security prevention and control network system.

The urban road monitoring system is an important part of the public security command system. It provides the most intuitive reflection of the situation on the site and is the basic guarantee for implementing accurate scheduling. Front-end equipment at key locations and monitoring points will use video images in various ways (optical fiber, dedicated lines, etc.) ) It is transmitted to the traffic command center to store, process, and publish information, so that traffic command and management personnel can make timely and accurate judgments on traffic violations, traffic jams, traffic accidents, and other emergencies, and adjust system controls accordingly. Parameter and command scheduling strategy.

By digitally encoding and compressing video images, the traffic television monitoring system supports the call of authorized user terminals in the local area network and even the wide area network to the data and image resources as well as the real-time control of the front-end equipment to realize the monitoring, switching and control functions of the network users. Provide support for related systems such as Geographic Information System (GIS).

In order to improve the traffic congestion situation, cities are gradually promoting the implementation of real-time traffic situation image monitoring system plans for major traffic crossings, ie installing an intelligent road monitoring system at each important traffic crossing in the city, and realizing road traffic conditions through image transmission channels. Uploaded to the road monitoring command center, the center staff on duty can understand the road conditions in each area in order to adjust the flow of vehicles at each intersection to ensure smooth traffic. To monitor the violation of road vehicles, they can find and arrange road traffic in a timely manner. Whether it is a red light or reverse driving, as long as the motor vehicle violates the "People's Republic of China Road Traffic Safety Law" when crossing a major intersection in the city, it will be recorded by the road monitoring system. The illegal vehicle information will be printed immediately at the public security traffic control center. . The use of high technology to manage traffic has increased work efficiency and has facilitated the driver.

The main role of urban road traffic monitoring Traffic monitoring and guidance: Through the system, the on-site image in the surveillance area is transmitted back to the command center, so that the management personnel can directly grasp the traffic conditions such as vehicle queuing, congestion, and signal lights, and adjust the signal timing or other means in time. To ease traffic and change the distribution of traffic flow so as to relieve traffic jams.

Traffic Guards: The management personnel keep abreast of the traffic security video, the traffic conditions of large-scale assembly activities, and promptly mobilize the police force to ensure the smooth flow of traffic guard video.

Through the recording of emergencies, the ability to handle emergencies is enhanced.

Through video recording of violations, the monitoring system's positive effects on economic and social benefits will be brought into play.

Urban road monitoring system development process Urban road monitoring system is the result of the rise of video surveillance systems, the improvement of people's living standards, the convenience of vehicles, and the number of induced road accidents. It mainly experienced the three stages of analog, digital and high-definition.

1. Traditional analog monitoring mode The traditional analog monitoring mode is most prevalent in large and medium-sized cities in China when it has just introduced road monitoring applications. In recent years, it has become increasingly declining. Its main drawbacks are as follows:

The cost of laying the transmission channels is too expensive because each road monitoring point and the monitoring center are usually separated by several kilometers or even several tens of kilometers. However, the effective transmission distance is only about 300 meters away from the video cable. Obviously, the conventional solution is at the monitoring point. Optical fiber cables are laid between the monitoring centers as transmission channels, and optical fiber cables are connected at both ends as video/optical signal conversion devices. However, this solution is too expensive, and only the cost of optical fiber cabling accounts for more than 80% of the total investment cost of the entire monitoring system.

Complex system structure, many monitoring center equipments, cumbersome operation system consists of cameras, surveillance video wall, video recorders, control matrix, picture splitters, decoders and other auxiliary equipment. The coaxial cable is used as image transmission medium to shield twisted pair cables. In order to control the signal transmission medium, the equipment is numerous, the structure is complex, and the capacity expansion is poor, and most of the equipment is a special equipment. The operator is required to have the corresponding operation ability after training.

2. The development of digital video surveillance mode digital monitoring technology has greatly promoted the practicality of urban road monitoring systems. Digital urban road monitoring system consisting of analog cameras, video codecs, software platforms and other equipment has enabled the entire system to have computers. Quick processing capabilities, digital information anti-jamming capabilities, easy to quickly query records, and facilitate comprehensive management.

With the increasingly complex social security situation, urban road monitoring is no longer used solely for traffic management, but has begun to assume more and more responsibilities for comprehensive social management. Therefore, the original image definition has been unable to meet the current needs. In 2009, the Ministry of Public Security successively issued the "General Technical Conditions for Automatic Recording System for Red Lights", "General Technical Conditions for Intelligent Monitoring and Recording Systems for Road Vehicles" and "Technical Specifications for Image Acquisition of Road Traffic Safety Violations". A series of standards such as the "Automotive Vehicle Number Plate Image Automatic Identification Technical Specification" has opened the prelude to high-definition urban road monitoring system.

3. High-definition video surveillance mode The urban road monitoring system's high-definition process is not smooth. Initially, due to the serious delay problem of IP high-definition cameras, many users use “unbearable” to describe the effect of HD at the time and can only apply it. On the electronic police with lower real-time requirements.

With the development of technology, the delay of IP high-definition cameras has been shortened from the first few seconds to 200-400 milliseconds. However, for some dome cameras that require real-time PTZ operation, it is still unacceptable and has resulted in the emergence of The application of HD-SDI technology in the field of surveillance has even led to debates in the industry about IP high-definition and HD-SDI high-definition which is the future direction of development. However, with the increasing construction of high-definition projects, the needs of users have become more clear and the industry has gradually formed. The high-definition standard blending, high-definition IP, HD-SDI, standard definition surveillance points can be arbitrarily deployed according to user needs, the integration of the system concept.

Customized urban road monitoring system will become the mainstream Since 2010, Hikvision, Dahua, Zhongwei Electronics and other industry leaders have launched a customized high-definition monitoring system with a video synthesis platform as the core. Several company's video synthesis platforms have invariably integrated multiple functions such as digital matrix functions, high-definition codec functions, large-screen splicing control functions, and video management platform software. Zhongwei Electronics has also integrated its previous optical transmission platform. All functions, with strong optical access and networking capabilities.

The customized urban road monitoring system can not only realize the HD-SDI, IP high-definition, and standard definition video access, but also really integrate these three systems to collect HD-SDI digital uncompressed video and H. 264 digitally compressed video in one, can meet the needs of high-definition, high-real-time images, but also meet the requirements of digital storage, IP network transmission; both front-end compression coding, can also be divided into central / central compression coding, truly HD- SDI HD video, IP high-definition video and analog video any networking, scheduling, switching, control, support for video, audio, data, Ethernet, E1 signal, switch and other signals to access, can solve the same business on the platform Simultaneous access problems.

The customized urban road monitoring system can be customized according to customer requirements and incorporates the latest generation of monitoring systems with the advantages and characteristics of the high-definition monitoring system.