Parking lot license plate recognition device and system

Abstract

The invention relates to the technical field of vehicle management, in particular to a parking lot license plate recognition device and system. The device comprises a base, a stand column, a feedback machine body and a camera, the base is fixed at the bottom of the stand column, the feedback machine body is fixed at the upper end of the stand column, a first motor is fixed on the inner top surface of the feedback machine body, a motor shaft of the first motor penetrates through and extends out of the top face of the feedback machine body and is in transmission connection with a first rotating seat, a second rotating seat is rotationally connected into the first rotating seat, and a torsion spring is arranged between the second rotating seat and the first rotating seat. According to the device, the camera is set to be in a state convenient to adjust, a water jetting mechanism is arranged on the lower portion of the camera, a pulse water pump is arranged in the water storage mechanism and communicates with the water jetting mechanism through a hose, and clear water in the water storage mechanism is conveyed to the water jetting mechanism through the pulse water pump to be jetted, so that accumulated snow attached to a license plate is removed, and the camera can conveniently perform recognition.

Description

technical field [0001] The invention relates to the technical field of vehicle management, in particular to a parking lot license plate recognition device and system. Background technique [0002] License plate recognition system is an application of computer video image recognition technology in vehicle license plate recognition. License plate recognition is widely used in highway vehicle management, and in electronic toll collection system, it is also the main means of identifying vehicle identity combined with DSRC technology. The license plate recognition technology requires the ability to extract and recognize the moving license plate from the complex background, and identify the license plate number, color and other information through license plate extraction, image preprocessing, feature extraction, license plate character recognition and other technologies. In parking lot management, license plate recognition technology is also the main means of identifying vehicle...

AI Technical Summary

Problems solved by technology

[0003] The premise of license plate recognition is that the text on the license plate can be clearly displayed, but in areas with frequent snowfall, snow will adhere to the The surface of the license plate, so that when the vehicle drives to the license plate recognition equipment, the content of the license plate cannot be fully displayed because the text is blocked. Accumulation leads to traffic jams and affects traffic efficiency. For some drivers with relatively inexperienced drivers, they may stop in a hurry to clear the snow, which may cause the vehicle to get off before stopping, which may easily lead to traffic accidents.

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