Method and system for detecting vehicle overspeed on expressway

Abstract

The invention discloses a method and a system for detecting vehicle speeding on an expressway. First vehicle monitoring information is obtained through a first infrared sensing device and a first monitoring device; and first vehicle monitoring information is obtained based on a license plate detection model and the first vehicle monitoring information. License plate area; one or more of the first license plate areas reconstruct the first license plate area to obtain a first clear license plate area. Based on the first clear license plate area and the license plate recognition model, the first license plate number is obtained; the first license plate number and the first monitoring time are stored in the database; the second vehicle monitoring device is obtained through the second infrared sensing device and the second monitoring information, obtain the second license plate number; compare the second license plate number with the first license plate number in the database, when the second license plate number is the same as the first license plate number in the database, based on the second monitoring time and the first license plate number One monitoring time, the time difference between getting the same license plate number. Based on the time difference of the same license plate number, the vehicle speed is obtained.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and system for detecting vehicle overspeed on expressways. Background technique [0002] At present, the methods for judging whether a vehicle is speeding include inductive coil speed measurement, laser speed measurement, radar speed measurement and video speed measurement. Among them, two sets of coils need to be buried for inductive coil speed measurement, and the construction volume is relatively large. Once the road surface is changed, the coils need to be re-embedded. Where the road surface quality is not good, the maintenance work for the coils is huge. The price of laser speed measurement is too high. The cost of narrow-wave radar speed measurement is high, and large-flow vehicles cannot be monitored at the same time; the wide-wave scanning area is relatively wide and the monitoring area is large. The system cannot clearly identify which vehicle is violating t...

AI Technical Summary

Problems solved by technology

Among them, two sets of coils need to be buried for inductive coil speed measurement, and the construction volume is relatively large. Once the road surface is changed, the coils need to be re-embedded. Where the road surface quality is not good, the maintenance work for the coils is huge.

The price of laser speed measurement is too high

The cost of narrow-wave radar speed measurement is high, and large-flow vehicles cannot be monitored at the same time; the wide-wave scanning area is relatively wide and the monitoring area is large. The system cannot clearly identify which vehicle is violating the regulations, and it is easy to cause wrong capture and misjudgment; at the same time, the speed of a vehicle with a high speed can only be measured after passing a certain distance in the monitoring area, and it may be too late to capture its image information at this time, resulting in missed catch or wrong catch

[0003] However, the current video speed measurement can only measure the speed of one vehicle in one lane at a time. When two or several vehicles pass by at the same time, it cannot measure the speed, and it is impossible to judge whether they are speeding. There are many misjudged vehicles and the speed measurement error is too large.

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