Method for detecting and calculating the duration of a jump

• US 10,156,830 B2
• Filed: 11/14/2017
• Issued: 12/18/2018
• Est. Priority Date: 12/12/2016
• Status: Active Grant

• Current Assignee: The Swatch Group Research And Development Ltd
• Original Assignee: The Swatch Group Research And Development Ltd
• Inventors: Germiquet, Christophe, Ferri, Yvan, Willemin, Michel
• Primary Examiner(s): Kayes, Sean P
• Application Number:
  US15/811,757
• Publication Number:
  US 20180164747A1
• Time in Patent Office: 399 Days
• CPC Class Codes: A61B 2503/10 Athletes
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 5/1123 Discriminating type of movement, e.g. walking or running A61B5/1116, A61B5/112 take precedence
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A63B 2069/185 for ski-jumping
• CPC Class Codes: A63B 2220/40 Acceleration
• CPC Class Codes: A63B 2220/44 Angular acceleration
• CPC Class Codes: A63B 2220/62 Time or time measurement used for time reference, time stamp, master time or clock signal
• CPC Class Codes: A63B 2220/836 Sensors arranged on the body of the user
• CPC Class Codes: A63B 24/0062 Monitoring athletic performances, e.g. for determining the work of a user on an exercise apparatus, the completed jogging or cycling distance
• CPC Class Codes: A63B 69/18 for skiing
• CPC Class Codes: G01P 15/18 in two or more dimensions
• CPC Class Codes: G04F 8/006 running only during the time interval to be measured, e.g. stop-watch

Abstract

The invention relates to a method for detecting and calculating the duration of a jump effected by an individual, comprising the following steps:

• • Detection of a moment associated with a landing following the jump, this step comprising a sub-step of detecting an acceleration peak of an amplitude greater than a first threshold amplitude, within the acceleration measurements provided by a three-axis accelerometer, on board a watch worn on the wrist of the individual.
  • Detection of a jump phase, by detection, in a temporal window finishing at the moment of landing, of a succession of acceleration measurements between 0 g and 0.5 g during a duration greater than a first threshold duration.

Claims

1. A method for detecting and calculating the duration of a jump effected by an individual, comprising the following steps:

detection of a moment associated with a landing following the jump, this step comprising a sub-step of detecting an acceleration peak of an amplitude greater than a first threshold amplitude, within the acceleration measurements provided by a three-axis accelerometer, on board a watch worn on the wrist of the individual,

detection of a jump phase, by detection, in a temporal window finishing at the moment of landing, of a succession of acceleration measurements between 0 g and 0.5 g during a duration greater than a first threshold duration, g being the acceleration due to gravity at the Earth'"'"'s surface,

detection of a moment associated with the start of the jump corresponding to the first measurement of the succession of acceleration measurements between 0 and 0.5 g,

calculation of a duration of the jump by the difference of the moment associated with the landing and the moment associated with the start of the jump,

the step of detecting a moment associated with a landing comprising a sub-step of detecting a pressure peak of an amplitude greater than a second threshold amplitude and of lesser duration than a second threshold duration, from pressure measurements provided by a pressure sensor on board the watch, and a sub-step of comparing the moment associated with the acceleration peak and the moment associated with the pressure peak.

2. The method according to claim 1, in which the second threshold amplitude is greater than 2 millibars and the second threshold duration is less than 0.1 second.

3. The method according to claim 1, in which the first threshold duration is greater than 0.5 second.

4. The method according to claim 1, in which the first threshold amplitude is greater than 2 g.