Method for processing measurements of at least one electronic sensor placed in a handheld device

A method for processing measurements of at least one electronic sensor, housed in a portable device by a user, to deduce therefrom values of a datum at successive instants over time, the method comprising:

• during an active phase:
• a first calculator acquiring, at instants ta measurements of the at least one electronic sensor, and then establishing, at each instant tk an intermediate measurement based on the measurements acquired at the instants ta, over one and same time period, the instants tk being less numerous than the instants ta so that the first calculator thus carries out, during the active phase, a first compression of the measurements of the at least one sensor;
• at each instant tk, a second calculator executing a first algorithm for estimating a new value Pik of the datum, the executing comprising:
• reception of a new intermediate measurement established by the first calculator for the instant tk, the new intermediate measurement being more recent than the intermediate measurement received during a previous execution of the first algorithm, and then
• estimation of the new value Pik of the datum based on the new intermediate measurement received;
• at an instant t1, stopping the active phase and the switch to an unavailability phase which lasts instants tk and during which execution by the second calculator of the first algorithm is inhibited;
• during the unavailability phase, the first calculator continuing to acquire, at each instant ta, the measurements of the physical quantity carried out by the electronic sensor during the unavailability phase;
• wherein:
• during the unavailability phase, the first calculator:
• logging characteristics of the signal measured by the electronic sensor based on the new measurements acquired during the unavailability phase, and
• recording the characteristics, the number of characteristics logged during the unavailability phase being strictly less than the number of intermediate measurements that are established, during the active phase, by the first calculator for a period of same duration as the unavailability phase so that the first calculator thus carries out, during the unavailability phase, a second compression of the measurements of the at least one sensor with a higher compression rate than during the active phase;
• at an instant t2, stopping the unavailability phase and switch to an active-wakeup phase during which the second calculator executing a second algorithm for estimating a value Piw of the datum at an instant tw included in the interval [t1;
• t2] based on the characteristics logged and recorded during the unavailability phase by the first calculator;
• and then
• stopping the active-wakeup phase and returning to the active phase.

An electronic unit for processing measurements of at least one electronic sensor to deduce therefrom values of a datum at successive instants over time, the electronic unit comprising at least one first and one second electronic calculator, in which:

• the first calculator is programmed to, during an active phase, acquire, at instants ta, the measurements of the at least one electronic sensor, and then establish, at each instant tk an intermediate measurement based on the measurements acquired at the instants ta, over one and same time period, the instants tk being less numerous than the instants ta so that the first calculator thus carries out, during the active phase, a first compression of the measurements of the at least one sensor;
• the second calculator is programmed to:
• execute, during the active phase, at each instant tk, a first algorithm for estimating a new value Pik of the datum, the execution comprising:
• reception of a new intermediate measurement established by the first calculator for the instant tk, the new intermediate measurement being more recent than the intermediate measurement received during a previous execution of the first algorithm;
• and then
• estimation of the new value Pik of the datum based on the new intermediate measurement received;
• at an instant t1, stop from the active phase and switch to an unavailability phase which lasts instants tk and during which execution by the second calculator of the first algorithm is inhibited;
• the first calculator is programmed to, during the unavailability phase:
• continue to acquire, at each instant ta, new measurements of the physical quantity carried out by the electronic sensor during the unavailability phase;
• wherein:
• the first calculator is further programmed to, during the unavailability phase:
• log characteristics of the signal measured by the electronic sensor based on the new measurements acquired during the unavailability phase, and
• record the characteristics, the number of characteristics logged during the unavailability phase being strictly less than the number of intermediate measurements that are established, during the active phase, by the first calculator for a period of same duration as the unavailability phase so that the first calculator thus carries out, during the unavailability phase, a second compression of the measurements of the at least one sensor with a higher compression rate than during the active phase;
• and
• the second calculator is further programmed to:
• at an instant t2, stop the unavailability phase and switch to an active-wakeup phase during which it executes a second algorithm for estimating a value Piw of the datum at an instant tw included in the interval [t1;
• t2] based on the characteristics logged and recorded during the unavailability phase by the first calculator;
• and then
• stop from the active-wakeup phase and return to the active phase.