Swim stroke counter

• US 10,022,087 B2
• Filed: 11/25/2013
• Issued: 07/17/2018
• Est. Priority Date: 11/29/2012
• Status: Active Grant

• Current Assignee: Johnson Outdoors, Inc.
• Original Assignee: Johnson Outdoors, Inc.
• Inventors: Holopainen, Reima K., Tiira, Jari M. A.
• Primary Examiner(s): Barbee, Manuel L
• Application Number:
  US14/088,491
• Publication Number:
  US 20140149066A1
• Time in Patent Office: 1,695 Days
• CPC Class Codes: A61B 2503/10 Athletes
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 5/1126 using a particular sensing technique
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: A61B 5/6829 Foot or ankle
• CPC Class Codes: G06F 2218/08 Feature extraction
• CPC Class Codes: G06V 40/23 Recognition of whole body movements, e.g. for sport training

Abstract

A stroke counter and a method of analyzing strokes of swimmer are provided. The stroke counter and method use changes in pressure proximate the arms and legs of the swimmer to determine when the swimmer performs a swimming stroke using either the arms or legs.

Claims

1. A stroke counter for use by a swimmer, comprising:

a pressure sensor;

a processor receiving pressure information from the pressure sensor, the processor configured to determine a stroke by analyzing the pressure information sensed by the pressure sensor, the processor also configured to determine a depth of the swimmer by analyzing the pressure information sensed by the pressure sensor;

an attachment structure for attaching the stroke counter to one of a hand of the swimmer to sense a pressure proximate the hand of the swimmer or a foot of the swimmer to sense a pressure proximate the foot of the swimmer; and

wherein the processor is configured to automatically switch between a stroke counting mode and a dive mode based on the pressure information collected by the pressure sensor.

2. The stroke counter of claim 1, wherein the pressure sensor and processor are formed as separate units that are operably coupled to one another to operably communicate the pressure information from the pressure sensor to the processor.

3. The stroke counter of claim 2, wherein the pressure sensor is configured to be operably attached proximate the swimmer'"'"'s ankle and the processor is configured to be operably attached proximate the swimmer'"'"'s arm.

4. The stroke counter of claim 3, wherein the pressure sensor and processor are operably wirelessly coupled.

5. The stroke counter of claim 1, wherein the pressure sensor and processor are positioned in a same housing.

6. The stroke counter of claim 1, wherein the processor is configured to analyze the pressure information and determine a stroke rate.

7. The stroke counter of claim 1, wherein the processor is configured to determine an estimated swim distance by determining a number of strokes over a length of time and multiplying the number of strokes by a predetermined stroke distance value.

8. The stroke counter of claim 1, wherein the processor is configured to determine an estimated swim distance by determining a number of strokes over a length of time and multiplying the number of strokes by a selected stroke distance value, the processor contains at least two predetermined stroke distance values, each predetermined stroke value representing a different distance traveled per stroke, the processor is configured to be toggled between the at least two predetermined stroke distance values by the user such that different distances can be determined based on the predetermined stroke values.

9. The stroke counter of claim 1, wherein the processor is configured to filter the pressure information to determine oscillations between high and low pressure to determine individual strokes.

10. The stroke counter of claim 1, further comprising a display operably coupled to the processor, the display is configured to display information relating to the strokes of the swimmer.

11. The stroke counter of claim 1, further comprising a second pressure sensor, the second pressure sensor provided in a housing separate from the processor.

12. The stroke counter of claim 1, wherein the processor is configured to automatically switch between the stroke counting mode and the dive mode at a predetermined depth of the swimmer based on the pressure information collected by the pressure sensor.

13. The stroke counter of claim 12, further comprising a display operably coupled to the processor, the display is configured to display information relating to the strokes of the swimmer, and wherein the processor is configured to change the information displayed on the display when automatically switching between the stroke counting mode and the dive mode.

14. A method of analyzing strokes of a swimmer, comprising:

sensing, with a pressure sensor, a pressure proximate an extremity of a swimmer to generate pressure information, wherein the step of sensing pressure proximate an extremity senses pressure proximate one of a hand of the swimmer or a foot of the swimmer;

analyzing the pressure information to identify individual strokes of the swimmer and to identify a depth of the swimmer with a processor; and

further comprising automatically switching between a stroke counting mode and a dive mode based on the step of analyzing the pressure information.

15. The method of claim 14, further comprising determining a stroke rate by analyzing the pressure information.

16. The method of claim 14, further comprising determining a total number strokes for a length of time.

17. The method of claim 16, further comprising determining a distance traveled by multiplying the number of strokes by a predetermined stroke distance.

18. The method of claim 14, wherein sensing pressure proximate an extremity of a swimmer to generate pressure information includes sensing pressure information proximate an arm of the swimmer to gather a first set of pressure information relating to arm strokes of the swimmer and sensing pressure information proximate a leg of the swimmer to gather a second set of pressure information relating to kick strokes of the swimmer, the step of analyzing the pressure information includes analyzing the first set of pressure information to identify individual arm strokes and analyzing the second set of pressure information to identify individual kick strokes.

19. The method of claim 14, wherein analyzing the pressure information includes analyzing a cyclical pattern of the sensed pressure to identify individual strokes of the swimmer.

20. The method of claim 19, further comprising identifying an individual stroke with each peak or valley of the cyclical pattern.

21. The method of claim 14, wherein automatically switching between a stroke counting mode and a dive mode includes changing information displayed to the swimmer.

22. The method of claim 14, wherein automatically switching between a stroke counting mode and a dive mode includes continuing to identify individual strokes of the swimmer.

23. The method of claim 14, wherein automatically switching between a stroke counting mode and a dive mode includes switching at a predetermined depth of the swimmer.

24. A stroke counter for use by a swimmer, comprising:

a pressure sensor;

a processor receiving pressure information from the pressure sensor, the processor configured to determine a stroke by analyzing the pressure information sensed by the pressure sensor, the processor is configured to automatically switch between a stroke counting mode and a dive mode based on the pressure information collected by the pressure sensor; and

an attachment structure for attaching the stroke counter to the swimmer at a point of attachment to sense a pressure proximate the point of attachment.

25. The stroke counter of claim 24, wherein the processor is configured to automatically switch between the stroke counting mode and the dive mode at a predetermined depth of the swimmer based on the pressure information collected by the pressure sensor.

26. The stroke counter of claim 24, further comprising a display operably coupled to the processor, the display is configured to display information relating to the strokes of the swimmer, and wherein the processor is configured to change the information displayed on the display when automatically switching between the stroke counting mode and the dive mode.