Method and device for displaying living body information

• US 20060025698A1
• Filed: 06/23/2005
• Published: 02/02/2006
• Est. Priority Date: 07/29/2004
• Status: Abandoned Application

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Kawachi, Taiji, Nakagawa, Tsuyoshi, Ito, Akiko
• Application Number:
  US11/159,266
• Publication Number:
  US 20060025698A1
• Time in Patent Office: Days
• US Class Current: 600/513
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/18 for vehicle drivers or machine operators
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/4035 Evaluating the autonomic nervous system
• CPC Class Codes: A61B 5/6887 mounted on external non-worn devices, e.g. non-medical devices
• CPC Class Codes: A61B 5/7257 using Fourier transforms

Abstract

At data updating timing, a two-dimensional coordinate system is shown on a display screen based on a display condition that is separately set; further, a region of a physical condition is shown to indicate a correspondence relationship between a driver'"'"'s physical condition and points on the two-dimensional coordinate system. A heartbeat rate analyzing process and a blood pressure analyzing process produce, as a result, detection data P(i) including a heartbeat rate HR and a blood pressure BP. The detection data P(i) is shown on the two-dimensional coordinate system with an X-axis of a heartbeat rate HR and a Y-axis of a blood pressure BP. Further, passed detection data P(i−1)˜P(i−k) numbering k are additionally shown so that older data is brighter in a color tone.

Claims

1. A living body information displaying method comprising steps of:

associating detection results of two kinds of living body information, which are obtained with respect to a subject, with a point on a two-dimensional coordinate system that is set on a display screen; and

displaying on the display screen

the detection results along with previously obtained detection results of the two kinds of living body information and

a region which indicates a correspondence relationship between a point on the two-dimensional coordinate system and a state of the subject.

2. A living body information displaying device comprising:

a detecting unit that obtains detection results of at least two kinds of living body information based on a pulse wave signal and an electrocardiograph signal of a subject;

a detection result displaying unit that associates the detection results with a point on a two-dimensional coordinate system that is set on a display screen to thereby display the detection results along with previously obtained detection results of the two kinds of living body information on the display screen; and

a region displaying unit that displays on the display screen a plurality of regions that indicate correspondence relationships between points of the two-dimensional coordinate system and states of the subject to overlap the regions to detection results displayed by the detection result displaying unit.

3. The living body information displaying device of claim 2,

wherein the previously obtained detection results are displayed in a display form that enables recognition of a time series of the previously obtained detection results.

4. The living body information displaying device of claim 2, further comprising:

a characteristic value computing unit that computes a characteristic value that represents a characteristic of living body information within a given time interval based on detection results obtained by the detecting unit,

wherein the detection result displaying unit displays the characteristic value that is associated with a point on the two-dimensional coordinate system in a display form that enables the characteristic value to be distinguished from the detection results obtained by the detecting unit.

5. The living body information displaying device of claim 2, further comprising:

a designating unit that designates a kind of living body information that is displayed by the detection result displaying unit,

wherein the region displaying unit displays a region corresponding to the kind of living body information designated.

6. The living body information displaying device of claim 2,

wherein the detecting unit detects at least a heartbeat rate and a blood pressure as the at least two kinds of living body information.

7. The living body information displaying device of claim 2,

wherein the detecting unit detects at least a sympathetic nerve activity amount and a parasympathetic nerve activity amount as the at least two kinds of living body information.

8. The living body information displaying device of claim 2, further comprising:

a display condition changing unit that changes

a scale of a coordinate axis of the two-dimensional coordinate system set on the display screen and

a set of coordinates that is a center of the display screen.

9. The living body information displaying device of claim 2, further comprising:

a determining unit that determines a state of the subject based on detection results obtained by the detecting unit; and

an executing unit that executes a control for assisting an action of the subject or a control for improving the state of the subject, based on the state of the subject determined.