HEALTH MANAGEMENT DEVICE

• US 20090259148A1
• Filed: 07/05/2007
• Published: 10/15/2009
• Est. Priority Date: 07/19/2006
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Lanfermann, Gerd, Te Vrugt, Juergen, Willmann, Richard Daniel, Bongers, Edwin Gerardus Johannus Maria
• Application Number:
  US12/373,756
• Publication Number:
  US 20090259148A1
• Time in Patent Office: Days
• US Class Current: 600/595
• CPC Class Codes: A61B 5/1071 measuring angles, e.g. using goniometers A61B5/1123 takes precedence
• CPC Class Codes: A61B 5/1121 Determining geometric values, e.g. centre of rotation or angular range of movement
• CPC Class Codes: A61B 5/1124 Determining motor skills
• CPC Class Codes: A61B 5/1127 using markers
• CPC Class Codes: A61B 5/4528 Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/6824 Arm or wrist
• CPC Class Codes: A63B 2024/0012 Comparing movements or motion sequences with a registered reference
• CPC Class Codes: A63B 2071/0636 3D visualisation
• CPC Class Codes: A63B 2220/16 Angular positions
• CPC Class Codes: A63B 2220/803 Motion sensors

Abstract

The invention relates to a health management system comprising a body or limb movement detecting means for detecting the movements and position of a users body or limb(s) in 3D space, a movement analyzing means for analyzing the data of the measurement carried out by the body or limb movement detecting means, wherein the body or limb movement detecting means comprises at least three sensors or markers for tracking a user'"'"'s body or limb movement in 3D space by measuring an angle embedded by two body parts of the user which are connected to each other by a joint being the apex of the angle to be measured, at which one of the sensors or markers is provided. To detect the offset a change in distance between two neighboring sensors or markers indicates an offset of the sensor at the joint spaced apart from the apex.

Claims

1. Health management system comprising:

a body or limb movement detecting means for detecting the movements and position of a users body or limb (s) in 3D space,

a movement analyzing means for analyzing the data of the measurement carried out by the body or limb movement detecting means;

wherein the body or limb movement detecting means comprises at least three sensors or markers for tracking a user'"'"'s body or limb movement in 3D space by measuring an angle embedded by two body parts of the user which are connected to each other by a joint being the apex of the angle to be measured, at which one of the sensors or markers is provided, characterized in that a change in distance between two neighboring sensors or markers indicates an offset of the sensor at the joint spaced apart from the apex, the change in distance corresponding to the body or limb movement.

2. The health management system according to claim 1,

characterized in that from a measurement of an offset of the marker at the joint a stimulation signal is generated for causing the user to move the sensor towards the apex.

3. The health management system according to claim 1, wherein the body or limb movement measuring means is selected from a camera-based computer vision with markers, a sensor garments a motion sensor, and a position sensor.

4. The health management system according to claim 3, further comprising a least one mode stimulator that includes an audio mode stimulator having an audio stimulation unit or a video mode stimulator with a video stimulation unit.

5. (canceled)

6. (canceled)

7. A method of automatically position learning for camera-based limb tracking in particular in home stroke rehabilitation, comprising the steps of:

placing at least three markers on a user'"'"'s limb to be analyzed for tracking a user'"'"'s body or limb movement, so that they build an angle;

embedded by two body parts of the user which are connected to each other by a joint being the apex of the angle to be measured, at which one of the markers is provided;

comparing positions of the markers relative to each other, wherein a change in distance between two neighboring markers indicates an offset of the marker at the joint of the limb spaced apart from the apex.

8. The method according to claim 7, characterized in that it further includes the steps of

computing the motion between the neighboring sensors to determine if the marker at the joint is placed at the upper or lower limb;

generating a first offset value assuming that offset between joint and marker is zero;

recording the user'"'"'s movement and adjusting the assumption on the marker or sensor offset by analyzing the motion.

9. The method according to claim 8, characterized in that it further includes the step of

minimizing the variation in the distance of the markers to the expected joint position as observed from the recorded motion.

10. The method according to claim 7, characterized in that it comprises steps of

generating a visual and/or additive stimulation signal when said offset data is above a target offset range so as to cause the user to adjust the location of the sensor by the joint by moving the sensor towards the apex of the angle embedded between the user'"'"'s limbs.