47results about How to "High precision characteristics" patented technology

The application discloses an integrated multi-mode communication and biological feature verification access control card, a control system and a method, relates to the technical field of access control and identity recognition, and roots out the transmission and background leakage risk by closing the whole process of biological feature collection, encrypted storage and comparison in the local security chip of the access control card. The dual-mode structure of star flash high-precision ranging and 2.4G stable transmission is adopted, the dynamic distance threshold is triggered, the pain points of false triggering and delay of the traditional scheme are solved, the power consumption is optimized by the hierarchical intermittent strategy, and long endurance is ensured. The management end fuses multi-base station star flash ranging and RSSI fingerprint correction, realizes centimeter-level triggering and sub-meter indoor positioning, supports illegal intrusion alarm, track tracing and regional density statistics, and upgrades the traditional access control from single-point authentication to a fine location sensing management system.