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.

The invention relates to a balance base for a rowing machine. The base is used as a stand for the rowing machine, and the rowing machine can be positioned thereon in a fixed manner. At least one spring element is provided, wherein the at least one spring element is arranged between an upper frame and a lower frame, and the at least one spring element comprises an elastic or viscoelastic material, the tilting rigidity of which is both lower than the tensile-compressive rigidity of the spring and lower than the shear stiffness of the spring. Additionally, a form-fitting or force-fitting fixture of the upper frame to the rowing machine is provided.

A golf swing tracking system includes a wearable device. The wearable device has a camera, a processor and a signal transceiver. The camera is connected to the processor. The processor is in connected to the signal transceiver. The golf swing tracking system further includes an electronic device. The electronic device includes a signal receiver. The signal receiver is designed to receive a collection of data from the signal transceiver of the wearable device. The electronic device has a display and is programmed to execute an application. The application is designed to display the collection of data and to transmit the collection of data to a network, such as a social media network.

Methods, systems, and techniques for automated detection of goals and announcement of same are provided. The system includes a modified hockey puck and a set of goal units that can be mounted on a hockey goal. Within the puck are light sources, motion sensors, infrared transmitters, and a power source. Within the goal units are light sources, infrared sensors, and a microcontroller. When the goal units are mounted on the hockey goal, the infrared sensors form a detection area through which the puck must pass in order to count as a goal. The infrared transmitter of the puck and the infrared sensors of the goal units communicate with one another, and, when an infrared signal is received, the microcontroller automatically triggers one or more annunciator devices, such as visual, auditory, or haptic devices, to automatically indicate that a goal has been scored without human intervention.

A fitness motion recognition method and system, as well as an electronic device are disclosed. The fitness motion recognition method includes: collecting motion data and heart rate data of a human body during motion using a nine-axis inertial sensor and a heart rate sensor, respectively; calculating a resultant acceleration, a resultant angular velocity, and a roll angle of the nine-axis inertial sensor, as well as a real-time heart rate value using a motion recognition algorithm based on the motion data and heart rate data; and recognizing the fitness motion based on characteristics of the resultant acceleration, the resultant angular velocity and the roll angle of the nine-axis inertial sensor, and the real-time heart rate value.

Devices such as medical devices, including those for use in conducting pelvic muscle exercise, are generally provided. Embodiments herein relate generally to the medical device and consumer medical product fields, and in some embodiments, to a device for sensing, guiding, and/or tracking pelvic muscle exercise in men and women for the purpose of treating urinary incontinence, sexual dysfunction, and other pelvic conditions.

The present disclosure provides a wireless signal transmitting ball to be used in practice or gameplay of a sport and/or other entertainment activities. The ball of the disclosure comprises a microprocessor unit configured to record, process, and transmit data to a paired device. Further disclosed is a method of actuating the ball between different modes. The ball could be used by players during practice to record data about their performance. The ball could also be used by players or game officials or referees to keep score, adjudicate and decide the gameplay. For example, the information about location of the ball could be used to track balls that could potentially be lost. Additionally, data about spin, trajectory, speed, force applied and the like could be used by players or broadcasters for gaining insights to add to viewing pleasure.

A disclosed feedback method for a smart wearable device includes the following steps: acquiring characterized information of a current motion; searching the database to determine whether corresponding characterized information of motion is found in a database based on the acquired characterized information; prompting to notify that the user's motion is correct, recording the acquired characterized information to have a segmented data, and inserting the segmented data into to the database if the corresponding characterized information is found; and prompting to notify that the user's motion is incorrect if the corresponding characterized information is not found. A motion detector implementing the method and a smart wearable device are also provided.

A method for automatic recognition of a predetermined move of a user includes the construction of several characteristic physical quantities of the move of the user from acquired measurements performed by a tri-axial accelerometer only within a time interval [t.sub.d; t.sub.i], where the instant t.sub.i is an instant, later than the instant t.sub.d, at which the measured acceleration of a fist of the user in a direction X.sub.m changes sign and becomes negative, the direction X.sub.m being the direction parallel to a forearm of the user, directed from the elbow of the user to the fist of the user, then the classification of the move of the user in a predefined move category, chosen from among several possible predefined categories of moves, from these constructed characteristic physical quantities.

An automated football throwing machine that includes a housing, a flexible portion, a transport portion, an activation module and a power module. The housing includes a receiving portion for receiving a football and an ejecting portion for adjustably ejecting the football. The flexible portion includes an integrated chute configured to gravity funnel a football into the receiving portion. The transport portion is configured to transport the football from the receiving portion to the ejecting portion. The activation module is configured to engage the ejecting portion to eject the football. The power module is configured to electrically power the transport portion and the activation module.