US 12,222,364 B2
Detection of incorrect arrangement of inertial measurements units of a motion tracking system
Marta Maria Ramalho Ferreira, Oporto (PT); Ivo Jorge Ramos De Magalhães, Oporto (PT); Luís Ungaro Pinto Coelho, Oporto (PT); Pedro Henrique Oliveira Santos, Oporto (PT); Ivo Emanuel Marques Gabriel, Oporto (PT); Ana Clara Ferreira Matos, Oporto (PT); and Virgílio António Ferro Bento, Oporto (PT)
Assigned to SWORD HEALTH, S.A., Oporto (PT)
Appl. No. 17/641,702
Filed by SWORD HEALTH S.A., Oporto (PT)
PCT Filed Sep. 4, 2020, PCT No. PCT/EP2020/074811
§ 371(c)(1), (2) Date Mar. 9, 2022,
PCT Pub. No. WO2021/048022, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 19398009 (EP), filed on Sep. 10, 2019.
Prior Publication US 2022/0299542 A1, Sep. 22, 2022
Int. Cl. G01P 15/08 (2006.01); G01P 15/14 (2013.01); G01P 21/00 (2006.01); G16H 20/30 (2018.01); G16H 40/63 (2018.01)
CPC G01P 15/08 (2013.01) [G01P 15/14 (2013.01); G01P 21/00 (2013.01); G16H 20/30 (2018.01); G16H 40/63 (2018.01)] 20 Claims
OG exemplary drawing
 
1. A method for physical exercise of a person using a motion tracking system, the motion tracking system comprising a computing device and a plurality of units adapted to be arranged on body members of the person, each unit at least comprising an accelerometer and a gyroscope, the method comprising:
causing arrangement of each unit of the plurality of units on a different body member of the person;
providing, to the computing device, a first set of measurements of the person by each unit of the plurality of units, thereby enabling the computing device to obtain first sets of measurements, the first sets of measurements provided while the person is performing a first predetermined movement with the plurality of units arranged on the person, the first predetermined movement involving movement of at least one or more body members having a unit of the plurality of units arranged thereon; and
digitally processing, by the computing device, at least the first sets of measurements so as to determine at least one of:
that a respective unit of the plurality of units is arranged on a body member of the person with an orientation outside of a predetermined orientation range for a unit on that body member, according to both a predetermined unit arrangement and at least one of predetermined acceleration or orientation constraints to be met by the respective unit when the person performs the first predetermined movement, at least based on one or more of accelerations or orientations measured by the respective unit; or
that two or more units of the plurality of units are arranged on interchanged body members of the person, according to both the predetermined unit arrangement and at least one of predetermined acceleration or orientation constraints to be met by the two or more units when the person performs the first predetermined movement, at least based on one or more of the accelerations or the orientations measured by the two or more units;
in response to determining, based on at least the first sets of measurements that are provided while the person performs the first predetermined movement, at least one of that the respective unit of the plurality of units is arranged on the body member of the person with the orientation outside of the predetermined orientation range or that the two or more units are arranged on interchanged body members, adjusting operation of the motion tracking system, the operation being adjusted in such a way that at least one of:
the computing device digitally modifies, according to a determination made by the computing device at least based on one or more of the accelerations or the orientations measured by one or more of the plurality of units, at least one of: the predetermined unit arrangement or measurements provided by at least one of the plurality of units, the measurements digitally modified at least comprising measurements subsequent to the first sets of measurements; or
at least one of the plurality of units is or are caused to be rearranged on the body members of the person, according to a determination made by the computing device at least based on one or more of the accelerations or the orientations measured by one or more of the plurality of units, to fulfill the predetermined unit arrangement;
providing a second set of measurements of the person by each unit of the plurality of units, thereby enabling the computing device to obtain second sets of measurements, the second sets of measurements provided while the person is performing a second predetermined movement with the plurality of units arranged on the person, the second predetermined movement involving movement of at least one or more body members having a unit of the plurality of units arranged thereon, the physical exercise comprising the second predetermined movement; and
digitally processing, by the computing device, at least the second sets of measurements after the adjusting of the operation of the motion tracking system so as to determine whether the person has performed the second predetermined movement according to a set of predetermined movement constraints, the set of predetermined movement constraints comprising, at least for each of one or more body members that are to move in the second predetermined movement and to have a unit of the plurality of units arranged thereon according to the predetermined unit arrangement, one or more of: a predetermined movement orientation threshold or range, a predetermined movement motion threshold or range, or a predetermined movement acceleration threshold or range.