Abstract: A method for adjusting operation of a motion tracking system includes a computing apparatus and sensors, each sensor having a gyroscope and an accelerometer. The method includes the steps of aligning the sensors; providing, each sensor to the computing apparatus, a first orientation when the sensors are aligned, the first orientation having a first heading; placing the sensors on a person; and providing, each sensor to the computing apparatus, a second orientation when the sensors are placed on the person, the second orientation having a second heading. The method further includes digitally determining, the computing apparatus, whether the sensors are placed on the person according to a predetermined sensor arrangement based on both the first and second headings of each sensor; and adjusting, the computing apparatus, the operation of the motion tracking system based on the determination. Also, a system for tracking motion of a person.

Abstract: A method for adjusting operation of a motion tracking system at least including first and second sensors and a computing device, each of the sensors at least having a gyroscope. The method includes the following steps: arranging the first sensor on an upper arm of a person, and the second sensor on their chest; measuring orientations each of the first and second sensors while the person performs a predetermined movement. The movement includes the person moving a torso with respect to their hip while keeping the upper arm parallel to the torso and not rotating the upper arm. The method further includes digitally processing, the computing device, the orientations measured so as to digitally compute an orientation difference between the orientations measured by the first sensor and by the second sensor; and adjusting, the computing device, the operation of the motion tracking system based on the orientation difference computed.

Abstract: Method for determining a correct reproduction of a movement is disclosed. The method can include providing a first plane and a second plane, each defined by the first plane definition, corresponding to first and second time instants, respectively; providing a first pair of vectors by projecting a first orientation and a second orientation, corresponding to the first time instant, onto the first plane; providing a second pair of vectors by projecting the first orientation and the second orientation, corresponding to the second time instant, onto the second plane; computing first and second angles between the pair of vectors of the first and second pairs of vectors, respectively; and determining the correct reproduction of the movement if: the first angle is equal to or less than the start angle, and the second angle is equal to or greater than the end angle.

Abstract: Methods and systems for tracking movement of a person, including a method comprising: arranging a plurality of sensors of a motion tracking system on a body of the person; tracking movement of the person with the plurality of sensors at least while the person performs a movement; digitally estimating, with a computing device, a position of either the first joint or the sensor on the second body member, wherein the position of the first joint is estimated using measurements of the first sensor and the position of the sensor is estimated using measurements of both the first sensor and the sensor arranged on the second body member, and wherein the position is estimated while movement of the person is tracked; digitally computing, with the computing device, an acceleration of the estimated position while movement of the person is tracked; digitally computing, with the computing device, a first comparison between the computed acceleration of the estimated position and acceleration measurements of the sensor arrang

Abstract: A method for determining cause of a disconnection between a computing device of a motion tracking system and one or more sensors of the system, the sensors arranged on a person's body, the computing device configured to at least receive data through a wireless communications connection. Each sensor is configured to at least transmit data through the connection. The method includes measuring a signal strength of the connection with each sensor while the communications are established; processing signal strength values corresponding to a sensor when it has been disconnected from the computing device to determine if the sensor has been disconnected due to a distance increase between the person and computing device; and providing or commanding the provision of at least one user perceptible signal when the computing device has determined that at least one sensor has been disconnected due to a distance increase between the person and computing device.

Abstract: A method of performing sensor placement error detection and correction for a system for tracking human motion includes at least one sensor unit, and at least one sensor holder. The method includes at least the following steps: analyzing, whether there is at least one unmet condition, indicating an incorrect sensor unit placement; in case of detecting such at least one unmet condition preparing a list of potential reasons for the incorrect sensor unit placement; removing the possible reasons for incorrect sensor unit placement already presented to the user, and selecting the one of the reasons and presenting it to a user. Furthermore, this relates to a system for tracking human motion.

Abstract: A method for adjusting operation of a motion tracking system comprising a computing apparatus and a plurality of sensors, each sensor comprising a gyroscope and an accelerometer, the method comprising: aligning the plurality of sensors; providing, each sensor of the plurality of sensors to the computing apparatus, a first orientation when the sensors are aligned, the first orientation comprising a first heading; placing the plurality of sensors on a person; providing, each sensor of the plurality of sensors to the computing apparatus, a second orientation when the sensors are placed on the person, the second orientation comprising a second heading; digitally determining, the computing apparatus, whether the plurality of sensors is placed on the person according to a predetermined sensor arrangement based on both the first and second headings of each sensor of the plurality of sensors; and adjusting, the computing apparatus, the operation of the motion tracking system based on the determination.

Abstract: A method for adjusting operation of a motion tracking system having a computing device and sensors, wherein each sensor includes a magnetometer, a gyroscope and an accelerometer, includes the following steps: receiving, the computing device, a magnetic field measurement from each of the sensors; digitally processing, the computing device, each of the magnetic field measurements in order to determine if a difference of intensities and/or inclinations of at least one pair of magnetic field measurements exceeds a threshold value, and/or if an x,y point with the differences of intensities and inclinations as coordinates thereof falls outside of a threshold area; and adjusting the operation of the motion tracking system if at least one difference exceeds the threshold value and/or the x,y point falls outside of the threshold area.

Abstract: A method (100) for calibrating a plurality of sensors (21-24) each comprising a magnetometer (31), a gyroscope (32) and an accelerometer (33), the method comprising: providing (111) a first device (10) comprising at least one cavity (15-18) adapted for introduction of one or more sensors (21-24); introducing (112) each sensor of the plurality of sensors (21-24) into the first device (10); transmitting (113), from each sensor of the plurality of sensors (21-24) to a computing apparatus (40), a first measure corresponding to the respective magnetometer (31); determining (114), the computing apparatus (40), whether differences between the first measure of each sensor and the first measure of the other sensors of the plurality of sensors (21-24) are lower than a predetermined threshold; and calibrating (115) the plurality of sensors (21-24), if at least one of the differences between the first measures is equal to or greater than the predetermined threshold, by rotating the first device (10) or a second device (1

Abstract: Method for determining a correct reproduction of a movement of a target based on a plurality of orientations thereof at different time instants at least including first and second time instants, the second time instant being posterior to the first time instant, the movement being defined by at least a first predetermined constraint, the first predetermined constraint being defined for first and second orientations of the plurality of orientations and defined by a start angle, an end angle and a first plane definition, comprising: providing a first plane and a second plane, each defined by the first plane definition, corresponding to the first and second time instants, respectively; providing a first pair of vectors by projecting the first orientation and the second orientation, corresponding to the first time instant, onto the first plane; providing a second pair of vectors by projecting the first orientation and the second orientation, corresponding to the second time instant, onto the second plane; computin

Abstract: Method for synchronizing data packets from embedded wireless data sensors for monitoring body motion of a patient, wherein each said sensor has an independent time base for applying time stamps to data packets sent from each said sensor; said method comprising the steps of: receiving an initial data packet having a timestamp from a first sensor; storing the timestamp of the initial data packet from the first sensor, herewith defined as reference time stamp; for each received data packet having a timestamp from said sensors, received subsequently to said initial data packet, for the first sensor, storing the timestamp of the most recent data packet from said first sensor, herewith defined as reference timestamp; for the sensors other than the first sensor, calculating the difference between the timestamp of a received data packet and the reference timestamp; calculating an average of said differences for the received data packets for each said sensor; correcting the timestamp of the received data packet with t

Abstract: The disclosure relates to a communication protocol method and device which enables, for example, the live feed of data from sensor nodes in a Wireless Personal Area Network (WPAN) to a centralized node, in particular for low-power long-range communications, further in particular with frequency chirp modulations. The disclosure provides long range communication with very low power consumption, preferably with a refresh rate of a few seconds per node while operating in the Licensed-Free Industrial/Scientific/Medical (ISM) frequency band, defined by the International Telecommunication Union (ITU). The method and device protocol include Medium Access Control (MAC) and Host functionalities that make the best use a LoRa radio, while keeping a reliable live feed of data from peripheral nodes to a central node, that is capable of managing multiple links, configured to comply with directives from Conformité Européenne (CE) and Federal Communications Commission (FCC) for the license-free radio frequency ISM bands.

Abstract: Methods and a system for managing sessions of physical therapy exercises specific to a patient to maximize outcome are disclosed. Information for each patient includes the sessions to be performed as well as the exercises to be performed within each session. Sensors are attached to specific anatomical landmarks on the patient, depending on the limb to be treated (e.g. hip, shoulder, neck, etc.). The methods and system utilize execution by a data processor to order the exercise data records of the therapy plan data record using input from a monitoring system, store the ordered therapy plan data record, monitor each exercise execution of the patient in real-time according to the ordered therapy plan data record. The method, for instance, can optimize a therapy session for each individual.

Abstract: The disclosure relates to a communication protocol method and device which enables, for example, the live feed of data from sensor nodes in a Wireless Personal Area Network (WPAN) to a centralized node, in particular for low-power long-range communications, further in particular with frequency chirp modulations. The disclosure provides long range communication with very low power consumption, preferably with a refresh rate of a few seconds per node while operating in the Licensed-Free Industrial/Scientific/Medical (ISM) frequency band, defined by the International Telecommunication Union (ITU). The method and device protocol include Medium Access Control (MAC) and Host functionalities that make the best use a LoRa radio, while keeping a reliable live feed of data from peripheral nodes to a central node, that is capable of managing multiple links, configured to comply with directives from Conformité Européenne (CE) and Federal Communications Commission (FCC) for the license-free radio frequency ISM bands.

Abstract: The present invention intends to solve the problem of automatically analysing the movement performed by a subject. Disclosed is a 3D motion tracking method that allows a user to perform a control movement and so generating a tunnel of motion. Using the tunnel of motion a user can repeat the motion but limiting the movement within the boundaries of the tunnel. The disclosed motion analysis system and methods can be used in medical rehabilitation, sport, science, gaming, robotics, cinema or force feedback applications.