Highway rear-end collision prevention early warning system
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A technology of expressway and early warning system, applied in anti-collision system, traffic flow detection, arrangement of variable traffic instructions, etc., can solve the problems of vehicle rear-end collision monitoring and early warning, etc., so as to improve road smoothness and ensure driving safety Effect
Inactive Publication Date: 2010-07-21
WUHAN UNIV
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The system uses the public telephone network to form an early warning network. Since the artificial signal switch is used to replace the sensor and other monitoring devices, it is impossible to monitor and warn the vehicle rear-end collision. Pre-warning the occurrence of rear-end collision accidents, so as to prevent rear-end collision accidents
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[0043] Standard two-way two-lane (double-lane ≥ 7.5 meters) is the main pattern of expressway lane arrangement, and the highway anti-collision warning system of the present invention is especially suitable for the monitoring arrangement of two-way two-lane.
[0044] According to the terrain, terrain, traffic flow information of the monitored expressway and the meteorological data of perennial frost, fog, rain and snow, etc., arrange N monitoring points (including the whole process) in the two-way two-way lane of the expressway.
[0045] Such as figure 1 , 2 , the two-way two-lane monitoring subnet includes a control terminal K arranged at the exit and entrance, and the control terminal K is composed of a terminal computer, a visibility meter connected to the terminal computer, a GSM / GPRS remote communication module and a monitoring display screen;
[0082] For two-way multi-lane highways (such as two-way four-lane, six-lane, etc.), according to the basic facilities and patterns of the present invention, the installation position of the ultrasonic probe can be changed to complete the monitoring.
[0083] Taking the standard two-way four-lane (2×7.5m) expressway as an example, the specific implementation is as follows;
[0084] Such as Image 6 , set up a monitoring frame between the roadside on the right side of the lane and the middle divider, the monitoring frame is a cuboid, length × width × height = 8.2 × 1.2 × 6 meters; the distance between the center lines of the lanes on the inner and lower sides above the monitoring frame An ultrasound probe is placed at a position of 1 meter.
[0085] The first and second ultrasonic probes 1 and 2 monitor the slow lane, the third and fourth ultrasonic probes 3 and 4 monitor the third lane, the fifth and sixth ultr...
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Abstract
The invention discloses a highway rear-end collision prevention early warning system which relates to the technical field of traffic safety facilities. The highway rear-end collision prevention early warning system comprises control terminals (K) which are arranged at an entrance and an exit; monitoring subnetworks are arranged at N monitoring points of a highway full-range two-way lane, and the long-distance wireless communication between each monitoring subnetwork and the control terminal (W) is realized through a GSM/GPRS (Global System for Mobile Communications/General Packet Radio Service) wireless communication module (W); and each monitoring subnetwork mainly comprises a plurality of ultrasonic probes, a multi-machine communication interface circuit and an acousto-optic warning board (P). The invention has low expense and convenient construction, can accurately and reliably monitor and compute the vehicle speed, the lane and the front-and-rear vehicle distance of driving vehicles, can adjust the early warning threshold values of the safe vehicle interval and the vehicle speed according to the change of visibility, can early warn rear-end collision, overspeed, low speed, traffic jams of a forward road and the like, improves the smoothness ratio of the road, ensures the driving safety and is suitable for highway rear-end collision prevention early warning.
Description
technical field [0001] The invention relates to the technical field of traffic safety facilities, in particular to an expressway anti-rear-collision early warning system. Background technique [0002] With the rapid development of highways and the sharp increase in car ownership, traffic accidents on highways have become more frequent, especially rear-end collisions and serial rear-end collisions caused by illegal driving and heavy fog, rain and snow. For this reason, the industry has proposed many solutions with different characteristics to the monitoring problem of expressway traffic safety, but they can be roughly divided into two categories, namely, vehicle-mounted early warning schemes and road test-type early warning schemes: vehicle-mounted early warning schemes mainly Relying on the on-board microwave radar or infrared laser ranging technology to monitor the distance between the two vehicles, if the distance between the two vehicles is less than the safe distance, th...
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