In-vehicle biometric detection device

JP2026090551APending Publication Date: 2026-06-02IHI PARKING SQUARE CO LTD +1

Patent Information

Authority / Receiving Office: JP · JP
Patent Type: Applications
Current Assignee / Owner: IHI PARKING SQUARE CO LTD
Filing Date: 2026-03-02
Publication Date: 2026-06-02

AI Technical Summary

Technical Problem

Existing methods for detecting living organisms inside a vehicle, such as those using millimeter waves, are prone to noise interference from non-living objects, especially in environments with wind or structural vibrations, leading to inaccurate detection of vital signs like respiration and movement.

Method used

An in-vehicle biological detection device using millimeter-wave sensors with anti-reflective and vibration damping measures, combined with an intermediate frequency amplifier, to differentiate and amplify vital signal components, reducing noise interference and ensuring accurate detection.

Benefits of technology

The device effectively distinguishes and amplifies vital signals like respiration, pulse, and body movement, reliably detecting living organisms within a vehicle by minimizing noise from non-living objects and environmental factors.

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Abstract

The present invention provides an in-vehicle biological detection means that can reliably detect living organisms inside a vehicle by reducing the influence of noise from non-living objects, even when there is wind, and by detecting signals from respiration, pulse, and body movement without them being masked by each other. [Solution] The system comprises an anti-reflection device 20, a vibration damping device 30, an in-vehicle millimeter-wave sensor 12, an intermediate frequency amplifier 14, and a discrimination device 16. The anti-reflection device 20 prevents the reflection of millimeter waves 7 on the outside of the vehicle 4. The vibration damping device 30 changes the vibration mode I of the pallet 6 on which the vehicle 4 is placed to a higher order, thereby changing the vibration frequency distribution of the vehicle. The in-vehicle millimeter-wave sensor 12 irradiates millimeter waves 7 into the vehicle through its windows and receives the reflected wave data 8. The intermediate frequency amplifier 14 amplifies the frequency components of respiration, pulse, and body movement from the reflected wave data 8 with different amplification factors and outputs an amplified signal 9. The discrimination device 16 determines the presence or absence of a living organism from the amplified signal 9.

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