Variable speed-limit system and method for recording vehicle overspeed violation

Abstract

The invention discloses a system and a method for recording vehicle overspeed violation. The system mainly comprises a roadside variable speed limit signboard, a violation discovery unit, a speed limit trigger in a vehicle, a remote control center, a remote data center and a wide area communication network. The method comprises the following steps: the remote control center determines the reasonable speed limit values of each road section under different conditions, and transmits speed limit information to the variable speed limit signboard through the wide area communication network; the variable speed limit signboard dynamically displays the speed limit value and transmits speed limit prompt information through a directional antenna; the speed limit trigger reads the vehicle speed, receives the speed limit prompt information, prompts a driver after receiving the effective speed limit prompt information, and wirelessly transmits a triggering signal when the vehicle speed is greater than the speed limit value; and the violation discovery unit acquires the triggering signal, extracts the current picture of a video camera after verifying the validity of the signal, records the vehicle violation evidence and transmits the evidence to a remote data center through the wide area communication network.

Description

technical field [0001] The invention belongs to the technical field of safety monitoring and transportation, and relates to a vehicle speeding violation recording system and method. Background technique [0002] According to statistics, among the serious and vicious traffic accidents in our country, those related to speeding accounted for about 39% of the total. In order to prevent accidents and educate drivers to drive safely, the method of installing speeding capture equipment at intersections or road sections is widely used. [0003] The most commonly used capture system is mainly composed of three parts: a speed limit sign, a speed measuring device and a capture device. The speed limit sign is installed near the driveway, and the number representing the maximum driving speed is printed on it. The most widely used speed measuring device is the induction coil buried in the center of the driveway and separated by a certain distance, followed by installation on the top or s...

AI Technical Summary

Problems solved by technology

[0007] The common shortcomings of the above inventions are: the speed limit value is fixed and cannot be dynamically adjusted according to road and weather conditions; there are certain safety hazards in the direct intervention of the vehicle control system; image evidence that does not involve vehicle violations cannot be convincing. Penalties; when multiple adjacent roads have different speed limit values ​​or vehicle positioning is inaccurate, it is easy to misjudgment

The invention focuses on the impact of visibility on the maximum speed limit, but does not involve other factors that affect the speed of the vehicle such as rain, snow, strong wind, traffic flow; at the same time, the invention includes the capture of vehicles speeding violations, but the key information such as the license plate is all through the image The processing method is extracted, and the imaging clarity is affected by various factors such as light, vehicle speed, camera shake, etc., and it cannot guarantee that the license plate can be accurately recognized

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