The Swatch Group Research and Development Ltd

Logitech Europe S.a.

Hooman Dejnabadi

Kamiar Aminian

Abolfazl Soltani

Cedric Nicolas

Martin Savary

Nicolas Chauvin

Joaquin Cabeza De Pablo

A portable instrument provided with a device for controlling or managing a sports or well-being activity of a person wearing the portable instrument. The control device includes at least a motion sensor and a pressure sensor connected to a calculation unit, and a GNSS receiver module connected to the calculation unit. The calculation unit of the control device is arranged to activate the GNSS receiver module for a time of activation defined subsequent to variations in movement detected by the motion sensor differing from known movement data or walking profiles in order to determine at least one reference speed of the person, and to deactivate the GNSS receiver module after the activation time for a deactivation time greater than the activation time.

Portable instrument for managing a sports or well-being activity

A method of detecting gaits of an individual with a sensor worn by the individual. The sensor includes an accelerometer and a processing unit. The method includes obtaining an signal representing one or more sensor acceleration values; sampling the signal to obtain a sampled signal; segmenting the sampled signal into windows to obtain a segmented acceleration signal; extracting a feature set from the segmented acceleration signal; determining a probability value, for a respective window, n, where n is a positive integer greater than zero, the probability value giving an estimated probability value of gait occurrence for the individual during the respective window; modifying the estimated probability value by using a histogram of previously detected gait durations to obtain a modified probability value; and determining, based on the modified probability value, and by using a determination threshold whether or not the respective window represents gait occurrence.

Method and system for gait detection of a person

A method for calculating an estimation of the speed {circumflex over (V)}[n'] of an individual walking along a path, over a time window including: computing a step length[n&#x2032;] of the individual, calculating the speed {circumflex over (V)}[n&#x2032;] using the following formula:[&#x2032;]=[&#x2032;]&#xd7;[&#x2032;].

Methods for computing a real-time step length and speed of a running or walking individual

A control device includes a two-dimensional inertial system configured to measure an acceleration of the control device. A control circuit is coupled to the two-dimensional inertial system where the control circuit is configured to receive acceleration information for the acceleration measured by the two-dimensional inertial system. The control circuit is further configured to integrate the acceleration information to calculate the velocity of the control device and determine if the velocity of the control device becomes zero along one or both of the two dimensions for which the two-dimensional inertial system is configured to measure acceleration. The control circuit is further configured to correct a drift in the velocity if the control circuit determines that the velocity is zero along one or both of the two dimensions.

Growing community of inventors

Orbe, Switzerland

Hooman Dejnabadi