Sensing device for measuring movement along linear/arc path

• US 7,426,878 B2
• Filed: 05/02/2006
• Issued: 09/23/2008
• Est. Priority Date: 12/16/2005
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Liou, Shun-Nan, Lu, Ying-Ko, Tsai, Ming-Jye, Lian, Zhi-Wei
• Primary Examiner(s): CHAPMAN JR, JOHN E
• Application Number:
  US11/415,312
• Publication Number:
  US 20070137301A1
• Time in Patent Office: 875 Days
• Field of Search: 735/10, 738/654, 463/36, 463/37, 463/39
• US Class Current: 73/865.4
• CPC Class Codes: A63B 2220/40 Acceleration
• CPC Class Codes: A63B 2225/50 Wireless data transmission, e.g. by radio transmitters or telemetry
• CPC Class Codes: A63F 2300/1012 involving biosensors worn by the player, e.g. for measuring heart beat, limb activity
• CPC Class Codes: G01P 15/18 in two or more dimensions
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883

Abstract

A sensing device for measuring movement along linear/arc path, being adapted to adhere to a body, is capable of determining specific movements of the body, which comprises: at least a two-axis accelerometer, for detecting accelerations measured along a first direction and a second direction and thus issuing a sensing signal corresponding to the detection; a signal processor, for processing the sensing signal received thereby and thus providing a data of acceleration; and a means of measurement, capable of determining and measuring a linear/arc movement of the body with respect to the data of acceleration.

Claims

1. A sensing device for measuring movement along linear/arc path, being adapted to adhere to a body, capable of detecting and measuring a specific movement of the body, comprising:

at least a two-axis accelerometer, for detecting accelerations measured along a first direction and a second direction and thus issuing a sensing signal corresponding to the detection;

a signal processor, coupled to each two-axis accelerometer, for processing the sensing signal received thereby and thus providing an acceleration data; and

a measurement means, coupled to the signal processor, capable of determining a motion path of the specific movement with respect to the acceleration data, wherein the measurement means determines the motion path according to phase difference between the sensing signal corresponding to the first direction and the sensing signal corresponding to the second direction.

2. The sensing device of claim 1, wherein the signal processor, further comprising:

an initial orientation unit, for registering an acceleration data relating to an initial balance position of the body so as to use the same as a reference for calibrating other acceleration data received by the signal processor.

3. The sensing device of claim 2, wherein the measurement means is enabled to make an evaluation to determining the motion path of the specific movement of the body based on the calibrated acceleration data.

4. The sensing device of claim 1, wherein the first direction is perpendicular to the second direction.

5. The sensing device of claim 1, wherein the acceleration data includes accelerations measured along the first direction during the performing of the specific movement.

6. The sensing device of claim 1, wherein the acceleration data includes accelerations measured along the second direction during the performing of the specific movement.

7. The sensing device of claim 1, wherein the motion path of the specific movement is a linear path.

8. The sensing device of claim 1, wherein the motion path of the specific movement is an arc path.

9. The sensing device of claim 1, further comprising a displaying unit.

10. The sensing device of claim 1, further comprising a communication unit.

11. The sensing device of claim 1, wherein the sensing device is being adapted to be worn on a human body for enabling the same to detect a specific movement of the human body.

12. A sensing device for measuring movement along linear/arc path, being adapted to adhere to a body, capable of detecting and measuring a specific movement of the body, comprising:

at least a two-axis accelerometer, for detecting accelerations measured along a first direction and a second direction and thus issuing a sensing signal corresponding to the detection;

a signal processor, coupled to each two-axis accelerometer, for processing the sensing signal received thereby and thus providing an acceleration data, the signal processor further comprising;

an initial orientation unit, for registering an acceleration data relating to an initial balance position of the body so as to use the same as a reference for calibrating other acceleration data received by the signal processor; and

a data storage unit, for storing acceleration data after being calibrated by the initial orientation unit; and

a measurement means, coupled to the signal processor, capable of determining a motion path of the specific movement with respect to the acceleration data, wherein the measurement means determines the motion path according to phase difference between the sensing signal corresponding to the first direction and the sensing signal corresponding to the second direction.

13. The sensing device of claim 12, wherein the first direction is perpendicular to the second direction.

14. The sensing device of claim 12, wherein the acceleration data includes accelerations measured along the first direction during the performing of the specific movement.

15. The sensing device of claim 12, wherein the acceleration data includes accelerations measured along the second direction during the performing of the specific movement.

16. The sensing device of claim 12, wherein the motion path of the specific movement is a linear path.

17. The sensing device of claim 12, wherein the motion path of the specific movement is an arc path.

18. The sensing device of claim 12, further comprising a displaying unit.

19. The sensing device of claim 12, further comprising a communication unit.

20. The sensing device of claim 12, wherein the sensing device is being adapted to be worn on a human body for enabling the same to detect a specific movement of the human body.