Biological information reading device
AssigneesShinano Kenshi Co., Ltd., Chuo University
InventorsHiroyuki Nakamura, Tetsuji Dohi, Kota Kudo
Life of this patent
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Abstract
While there are various methods for acquiring biological information based on pulse waveforms, none of the methods have been implemented in a biological information reading device that can be constantly operated stably. Provided is a biological information reading device which has achieved high accuracy by removing disturbance components from a pulse signal acquired by means of a multi-axis pressure sensor or a plurality of single-axis pressure sensors, and which can be attached to an examinee at all times for continuous observation taking advantage of the small and light-weight feature of the pressure sensors.
Claims5
A biological information reading device for reading biological information comprising:
- a biological sensor for acquiring a biological signal from a living body as an electric signal;
- and
- a signal processor operating as:
- a disturbance removal unit for removing a disturbance component in the electric signal acquired by the biological signal acquisition unit;
- and
- a biological information calculation unit for calculating a pulse waveform and a blood, pressure value as biological information on the basis of the electric signal from which disturbance is removed by the disturbance removal unit,
- wherein:
- the biological sensor includes a pulse wave detection sensor to be arranged above a blood vessel of the living body for detecting a pulse wave and an inertia detection sensor displaced from the pulse wave detection sensor,
- each of the pulse wave detection sensor and the inertia detection sensor includes a multiaxial pressure sensor, pressure detection axes thereof having different directional components respectively,
- the pulse wave detection sensor and the inertia detection sensor are configured to be attached on a skin of the living body individually so as to be not fixed in their mutual positions and to maintain the elasticity of the skin, and
- the disturbance removal unit is configured to remove inertial force components due to body movement detected by the inertia detection sensor from pulse wave components detected by the pulse wave detection sensor for respective axes.
Dependencies are inferred from the claim text.