Highway surveillance system exploration

The contents of highway monitoring mainly include two parts: expressway and toll station. The application department of the monitoring system includes the Expressway Administration Department, the Municipal Traffic Management Bureau, and the Provincial Communications Department. Tiandi Weiye Company, with its many years of experience in the monitoring industry and a wealth of product lines, has launched a dedicated highway monitoring system. Before the official introduction, let us first look at the problems we face.

1. What is the remoteness of the expressway? How to set up a safe and reliable monitoring system?

Highways are built between cities and cities, with large spans, harsh outdoor environments, and high maintenance costs. When designing a monitoring system, mature and stable equipment should be used. We suggest using the realization mode of optical transceiver and hard disk recorder. On the extension of the highway, laying fiber optics, transmission of video and reverse control signals. The transmission distance of the optical fiber is far, the signal attenuation is small, the price is cheap, and it is suitable for long-distance transmission. Once laid, it can be used for many years and can effectively reduce maintenance costs. At the front end, high-speed ball heads are used to monitor the passing vehicles. The PTZ head has a built-in temperature control system that can work normally in a wider temperature range. The monitoring center can restore the video signal by inputting the optical transceiver and input it to the hard disk video recorder. This system uses mature and reliable equipment.

2. The location of toll stations is decentralized. How to achieve centralized monitoring and management?

The monitoring of the toll station at the end of the highway is very different from that of the highway. Its position is quite decentralized. It is a difficult problem how to centralize monitoring of so many toll stations scattered in various regions. Tiandi Weiye Expressway special monitoring system design uses the network resources of each toll station to realize distributed network monitoring. At present, each toll station has 2M dedicated line access for road billing information management. The system is designed to install a network integrated ball or network video server at each toll station to directly connect the network signal. An integrated business management system was installed at the monitoring center to achieve centralized and centralized monitoring of toll stations.

3, how to solve the problem of compatibility between new and old systems and multiple systems?

In the two implementations we introduced above, we included a digital surveillance system represented by a hard disk recorder, and also included a networked monitoring system represented by an integrated network video server and a network. How to achieve compatibility between the two? In addition, highway monitoring systems have been built in many regions. How to achieve system expansion and how to achieve networking with higher-level systems are all problems that we face. Tiandi Weiye Expressway special monitoring system has launched a comprehensive command management platform for such issues. The platform can be compatible with various types of equipment, including hard disk recorders, embedded, network video servers, network integrated ball, network matrix and so on. Uniform compatibility with products in different periods. And we have adopted a modular design concept in the design, introduced the concept of device virtual layer, can be smoothly compatible with a variety of types, multiple manufacturers of equipment. Protected the user's investment and solved system compatibility issues.

4, how to solve the problem of many users of a large number of equipment management?

In such a large-scale monitoring system, there are a large number of management organizations and management personnel, and at the same time, the monitoring resources are also very rich. How each user can properly manage each monitoring device is crucial to the normal operation of a set of systems. The monitoring system of Tiandi Waiye Expressway adopts the concept of grouping, which divides many users into user groups and divides many devices into device groups. Such a large system is broken down into several small systems. At the same time, it manages the mapping of permissions between user groups and device groups. Including video browsing rights, control rights, management rights, and so on. When the authority is set, the principle of who is responsible for management is adopted, and the level of authority is also set for the person who has the same management, so that it can be guaranteed that there will be no problem of no management or cross management.

5, how to quickly locate the accident, so that the police quickly?

The distribution of geographical locations in the expressway system is extensive, and the accidents are uncertain. Toll stations are located in the outskirts of the city, and robbery and rushing events also occur from time to time. How to quickly locate an accident, quickly send out the police, and protect the safety of people's lives and property are related to the interests of millions of households. In the system, the dual map display function of the electronic map is designed, and the real-time video and electronic map screens are displayed at the same time, and the current equipment state can be distinguished by different colors on the map. When there is an alarm, the video where the alarm point is located can be automatically switched to the main display area. After the host receives the alarm signal, it can use different voices to prompt the current alarm status, and can also automatically send the alarm message to the responsible person.