Passenger flow detection method and system based on millimeter wave radar

Through the passenger flow detection method based on millimeter wave radar, the problems of privacy leakage and environmental dependence in the existing technology are solved, and accurate analysis and stable detection of dynamic changes in passenger flow are achieved.

CN119689463APending Publication Date: 2025-03-25SHANGHAI MAGIC PICK TECH CO LTD
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Patent Information

Application Number
CN202411839861.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The existing passenger flow detection technology has the risk of privacy leakage and is greatly affected by light, weather and light occlusion. Traditional sensors may fail in high-density areas or occlusions, making it difficult to provide an in-depth analysis of dynamic changes in passenger flow.

Method used

The passenger flow detection method based on millimeter wave radar is used to obtain the radar signal in the target area for pre-processing, estimate the passenger flow distance, speed and angle, and splice this information into images according to the time series, and use the trained passenger flow detection model for intelligent analysis.

Benefits of technology

It achieves a more comprehensive understanding of the dynamic changes of passenger flow, provides more accurate passenger flow detection capabilities, avoids privacy leakage problems, and can work stably under different environmental conditions.

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Abstract

The invention relates to the technical field of passenger flow detection, in particular to a passenger flow detection method and system based on a millimeter-wave radar, and the method comprises the steps: obtaining a radar signal of a target area based on the millimeter-wave radar, and carrying out the preprocessing of the radar signal, so as to obtain an intermediate frequency signal of the radar signal; estimating a passenger flow distance, a passenger flow speed and a passenger flow angle in the target area based on an intermediate frequency signal of the radar signal; and splicing the passenger flow distance, the passenger flow speed and the passenger flow angle in the target area according to a time sequence to obtain a distance time chart, a speed time chart and an angle time chart. According to the method, the time sequences of the distance, the speed and the angle are spliced into the image, and the dynamic change of the passenger flow can be reflected in real time. According to the processing method, the fluctuation trend of the passenger flow can be recognized in time, the real-time monitoring requirement is met, the spliced time graph can be intelligently analyzed through the trained passenger flow detection model, and therefore the characteristics and the change trend of the passenger flow are automatically recognized.
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