An intelligent access control system

By fusing multimodal sensors and constructing a virtual access space envelope, accurate spatiotemporal alignment and deformation compensation of multimodal access data are achieved. This solves the problems of low spatiotemporal reference alignment accuracy of multi-sensor data and poor anti-tailgating detection accuracy in existing technologies, improves the accuracy of identity recognition and anti-tailgating detection capabilities, and effectively resists forgery attacks.

CN122244983APending Publication Date: 2026-06-19XIAMEN QIUSHI INTELLIGENT NETWORK TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN QIUSHI INTELLIGENT NETWORK TECH CO LTD
Filing Date
2026-05-20
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing multimodal intelligent access control systems pose security risks in peak, densely populated traffic scenarios due to backlight interference, low spatiotemporal alignment accuracy of multi-sensor data, and poor accuracy in anti-tailgating detection. This allows unauthorized personnel to tailgate into enterprise areas, and it is difficult to identify spoofing attacks.

Method used

A multimodal sensing fusion architecture is adopted, which includes radar probes, near-infrared multispectral cameras, and anti-tailgating buffer 3D structured light scanners. Through virtual passage space envelope construction, topological mesh discretization, and geometric deformation field correction technology, accurate spatiotemporal alignment and spatial deformation compensation of multimodal passage data are achieved. This is combined with a virtual unit displacement vector field and comprehensive passage confidence determination.

Benefits of technology

It improves the accuracy of identity recognition and anti-tailgating detection in complex environments, effectively resists forgery attacks, and ensures traffic safety and enterprise information security.

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Abstract

This invention provides an intelligent access control system, relating to the field of intelligent security access control technology, comprising: an acquisition module for acquiring real-time access request data streams deployed at the entrance of the passage using radar probes, near-infrared multispectral cameras, and anti-tailgating buffer 3D structured light scanners; extracting spatial pose coordinate distribution parameters by parsing the access request data stream, and constructing a virtual access space envelope based on the spatial pose coordinate distribution parameters; and a mapping module for performing topological mesh discretization on the virtual access space envelope to obtain a micro-mesh array; and mapping the spatial mapping trajectory of the original multimodal biometric signals to the internal space of the micro-mesh array based on the node topological connection relationship of the micro-mesh array. This invention achieves accurate spatiotemporal alignment and spatial deformation compensation for multimodal access data.
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