APPARATUS FOR ANALYZING HUMAN MOTION

• US 20150208954A1
• Filed: 01/14/2015
• Published: 07/30/2015
• Est. Priority Date: 01/27/2014
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Myung-Gyu, KIM, Ye-Jin, BAEK, Seong-Min, KIM, Jong-Sung, JEONG, Il-Kwon
• Application Number:
  US14/596,369
• Publication Number:
  US 20150208954A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• 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 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 5/065 Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe
• CPC Class Codes: A61B 5/1114 Tracking parts of the body
• CPC Class Codes: A61B 5/1121 Determining geometric values, e.g. centre of rotation or angular range of movement
• CPC Class Codes: A61B 5/1127 using markers
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence

Abstract

The present invention provides an apparatus for analyzing human motion including a bio-sensor configured to transmit a bio-signal by being attached to a body part; a receiver configured to receive the bio-signal; and a controller configured to determine position and velocity of the bio-sensor based on the bio-signal and estimate position and velocity of the joint adjacent to the body part based on the position and velocity of the bio-sensor. Accordingly, the present invention can reduce restrictions in movements by using a wireless bio-signal without having any problem in being hidden.

Claims

1. An apparatus for analyzing human motion, comprising:

a bio-sensor configured to transmit a bio-signal by being attached to a body part;

a receiver configured to receive the bio-signal; and

a controller configured to determine position and velocity of the bio-sensor based on the bio-signal and estimate position and velocity of the joint adjacent to the body part based on the position and the velocity of the bio-sensor.

2. The apparatus for analyzing human motion of claim 1, wherein the controller identifies the bio-sensor transmitting the bio-signal by analyzing a time series pattern of the bio-signal.

3. The apparatus for analyzing human motion of claim 1, wherein the controller determines position of the bio-sensor by a triangulation.

4. The apparatus for analyzing human motion of claim 1, wherein the controller calculates position of the bio-sensor by using Equation of Ps(t)=(Xs(t), Ys(t), Z_s(t)), in which Ps(t)=(Xs(t), Ys(t), Z_s(t)) is position of the bio-sensor at time t.

5. The apparatus for analyzing human motion of claim 1, wherein the controller determines velocity of the bio-sensor by the frequency shift-based Doppler effect.

6. The apparatus for analyzing human motion of claim 1, wherein the controller calculates velocity of the bio-sensor by using Equation of

7. The apparatus for analyzing human motion of claim 1, wherein the controller calculates velocity of the bio-sensor by using Equation of

8. The apparatus for analyzing human motion of claim 1, wherein the controller corrects velocity of the bio-sensor by using the Equation of V_s=aV_s¹+(1−

a)V_s² (0≦

a≦

1), in which V_s is a velocity vector of the bio-sensor and a is a predetermined value by a user.

9. The apparatus for analyzing human motion of claim 1, wherein the controller estimates velocity of the joint based on the position of the joint.

10. The apparatus for analyzing human motion of claim 1, wherein the controller estimates position of the joint based on the position of the bio-sensor included in frames measured continuously in time intervals.

11. A method for analyzing human motion, comprising:

receiving a bio-signal from a bio-sensor attached to a body part;

determining position of the bio-sensor based on the bio-signal;

determining velocity of the bio-sensor based on the bio-signal; and

estimating position and velocity of the joint based on the position and the velocity of the bio-sensor.

12. The method for analyzing human motion of claim 11, further comprising identifying the bio-sensor transmitting the bio-signal by analyzing a time series pattern of the bio-signal.