Method and system for tracking movement of a person with wearable sensors

A method for tracking movement of a person, the method comprising:

• causing arrangement of a plurality of sensors of a motion tracking system on a body of the person, the plurality of sensors comprising a first sensor, a second sensor, and a third sensor, the first sensor, the second sensor, and the third sensor each comprising an accelerometer and a gyroscope, wherein the plurality of sensors are arranged in an unconfirmed arrangement on the body of the person;
• tracking movement of the person with the plurality of sensors while the person performs a movement, the movement performed by the person involving a first body member of the person and at least one of a second body member of the person or a third body member of the person, the first body member and the second body member connected by a first joint, and the first body member undergoing a first rotation greater than a second rotation of at least one of the second body member or the third body member during the movement;
• for each sensor of the plurality of sensors, digitally computing, with a computing device, a computed rotation undergone by the sensor while the movement of the person is tracked;
• digitally determining, with the computing device, that the first sensor is arranged on the first body member based on the first sensor having a greatest computed rotation;
• and
• digitally determining, with the computing device, that the second sensor is arranged on the second body member and the third sensor is arranged on the third body member by:
• digitally estimating, with the computing device while the movement of the person is tracked,
• a first estimated position of the first joint, the first estimated position being estimated using first measurements of the first sensor and a first predetermined length;
• digitally computing, with the computing device, a first computed acceleration of the first estimated position while the movement of the person is tracked;
• and
• digitally computing, with the computing device a first comparison between the first computed acceleration of the first estimated position and first acceleration measurements of the first sensor and a second comparison between the first computed acceleration of the first estimated position and second acceleration measurements of the second sensor;
• or
• digitally estimating, with the computing device while movement of the person is tracked, a second estimated position and a third estimated position, the second estimated position and the third estimated position estimated using the first measurements, second measurements of the second sensor, third measurements of the third sensor, a second predetermined length, and a third predetermined length;
• digitally computing, with the computing device, a second computed acceleration of the second estimated position and a third computed acceleration of the third estimated position while the movement of the person is tracked;
• and
• digitally computing, with the computing device, a third comparison between the second computed acceleration of the second estimated position and second acceleration measurements of the second sensor and a fourth comparison between the third computed acceleration and third acceleration measurements of the third sensor.