What is highway electronic monitoring?

Five basic components of expressway monitoring system;

1. Each expressway has a monitoring center building in its management area. The monitoring center is generally located at the entrance and exit of the expressway, and can also be located in the center of the management section.

The center is generally equipped with a large map board and a monitoring TV system, as well as multi-screen switching control equipment, video monitors, low-speed video recording equipment and automatic conversion devices.

The center is equipped with computer network system, which is responsible for the management of toll information, emergency call control, large electronic display screen control at the entrance and exit of expressway and small electronic signboard control along expressway.

There are also many kinds of electronic equipment in the center building, such as program-controlled switching system, central console, two or four 8Mbit/s optical fiber communication transceivers, electrical terminals and Internet access equipment, wireless telephone system, UPS power supply system, etc.

2. Each toll station is equipped with optical cable communication equipment, computer local area network for toll collection, toll station signal light control system, monitoring, camera and recording system, console, telephone console in the station, wireless intercom, etc.

3. Each toll station is equipped with a special computer for the workstation of the toll computer network system, a toll bill printer, a toll sign, an indicator light, a lane controller, an automatic railing, a voice prompt system, an automatic vehicle traffic counter, an intercom, an air conditioner and a power supply system.

4. Set up multiple monitoring cameras along the expressway and toll station square, and the video signals of the cameras are transmitted to the central monitoring room through optical cable, coaxial cable, symmetrical cable or microwave transmission system, so that the control center can grasp the running situation of vehicles along the expressway and facilitate command and dispatch.

5. Road LED signs. LED signs release real-time information of expressways, which are located in an open environment, and their control signal lines are generally composed of optical fibers. The power supply of the system adopts local transformation measures (mainly switching power supply), and lightning accidents caused by power supply are more common.

Extended data:

The necessity of expressway monitoring;

Electronic toll collection (ETC) is an international electronic toll collection system for roads, bridges and tunnels. Its biggest feature is that vehicles can pass through the toll station at a fairly high speed without slowing down and paying parking fees in front of the toll station.

The adoption of non-stop toll collection system can make expressway toll collection move towards paperless and cashless management, which can fundamentally eliminate the loss of toll tickets and solve the problem of financial management confusion in expressway toll collection. In addition, the implementation of the non-stop toll collection system can also save capital construction costs and management costs.

ETC system is an advanced system composed of microwave (or infrared or radio frequency) technology, electronic technology, computer technology, communication and network technology, information technology, sensing technology, image recognition technology and other high-tech equipment and software (including management). , so that vehicles can automatically collect tolls without stopping. At present, most ETC systems use microwave technology.

Through the signal transmitting and receiving device of the roadside lane equipment control system, the non-stop toll collection system identifies the unique code in the equipment on the vehicle, discriminates the vehicle type, calculates the toll, and automatically deducts the toll from the special account of the vehicle user. Vehicles using ETC lanes without on-board equipment or vehicles with invalid on-board equipment are regarded as illegal vehicles, and image acquisition and identification are implemented, which will be handled jointly with the * department afterwards.

Interval speed measurement: The detection equipment on the overpass or inverted L-shaped pole of the expressway is used to continuously photograph the traffic information such as the license plate number of vehicles passing through two sections of the expressway, and then these pictures are processed and recognized by using the automatic license plate recognition technology, and then the speed of the same vehicle is calculated by calculating the time of passing through two sections, so as to judge whether the vehicle is speeding.

The data and picture information of illegal vehicles are sent to the police on duty through the early warning system and displayed on the display screen to inform the illegal vehicles and warn more vehicles. All illegal vehicles and related pictures calculated by the system will be provided to the illegal processing system as illegal information sources for further follow-up.

Xie, general manager of Shenzhen Ruike Digital Co., Ltd. explained: "In the past, it was a fixed-point snapshot. In the form of digital capture, velocity measurement can only capture this fixed point, but can not realize interval velocity measurement. Now, the license plate recognition system is used to realize the interval speed measurement between two points by calculating the time after two points, so as to realize the whole speed measurement. "

Expressway monitoring night vision system: Expressway lacks effective monitoring means at night. In the monitoring along the way, there is a blind spot in the monitoring of ordinary cameras at night, that is, some areas cannot be monitored, and the monitoring effect can only be seen through headlights, blurred images of vehicles, etc. It is difficult to monitor the driving state and license plate of the vehicle.

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