Abstract: A method and apparatus for monitoring the head and torso orientation of a subject during physical motion. The method and apparatus employ at least two inertial measurement units (IMUs) being temporally synchronized with each other and each measuring three degrees of freedom of angular velocity, acceleration, and optionally magnetic field. A first IMU being affixed to the head of the subject and the second IMU being affixed to the torso of the subject. The orientation of the head, the orientation of the torso, and optionally the relative orientation of the head and torso are calculated based on the data from the IMU's and optionally magnetometer data. The resultant output data is transmitted to a host device (computer, tablet, smart phone) and can be used for monitoring, training, coaching, worker safety and health, and/or rehabilitation.

Abstract: A method and apparatus for monitoring the head and torso orientation of a subject during physical motion. The method and apparatus employ at least two inertial measurement units (IMUs) being temporally synchronized with each other and each measuring three degrees of freedom of angular velocity, acceleration, and optionally magnetic field. A first IMU being affixed to the head of the subject and the second IMU being affixed to the torso of the subject. The orientation of the head, the orientation of the torso, and optionally the relative orientation of the head and torso are calculated based on the data from the IMU's and optionally magnetometer data. The resultant output data is transmitted to a host device (computer, tablet, smart phone) and can be used for monitoring, training, coaching, worker safety and health, and/or rehabilitation.

Abstract: An apparatus and method for calculating athlete speed non-invasively, on the field/court of play using data from a torso-mounted inertial measurement unit. The method complements existing, GPS-based methods for calculating athlete speed by enabling use in environments where GPS signal is unavailable (i.e. indoors).

Abstract: An apparatus and method for calculating athlete speed non-invasively, on the field/court of play using data from a torso-mounted inertial measurement unit. The method complements existing, GPS-based methods for calculating athlete speed by enabling use in environments where GPS signal is unavailable (i.e. indoors).

Abstract: An application of rate gyros and accelerometers allows electronic measurement of the motion of a rigid or semi-rigid body, such as a body associated with sporting equipment including a fly rod during casting, a baseball bat, a tennis racquet or a golf club during swinging. For instance, data can be collected by one gyro according to the present invention is extremely useful in analyzing the motion of a fly rod during fly casting instruction, and can also be used during the research, development and design phases of fly casting equipment including fly rods and fly lines. Similarly, data collected by three gyros and three accelerometers is extremely useful in analyzing the three dimensional motion of other sporting equipment such as baseball bats, tennis racquets and golf clubs. This data can be used to support instruction as well as design of the sporting equipment.

Abstract: An application of rate gyros and accelerometers allows electronic measurement of the motion of a rigid or semi-rigid body, such as a body associated with sporting equipment including a fly rod during casting, a baseball bat, a tennis racquet or a golf club during swinging. For instance, data can be collected by one gyro according to the present invention is extremely useful in analyzing the motion of a fly rod during fly casting instruction, and can also be used during the research, development and design phases of fly casting equipment including fly rods and fly lines. Similarly, data collected by three gyros and three accelerometers is extremely useful in analyzing the three dimensional motion of other sporting equipment such as baseball bats, tennis racquets and golf clubs. This data can be used to support instruction as well as design of the sporting equipment.

Abstract: An application of rate gyros and accelerometers allows electronic measurement of the motion of a rigid or semi-rigid body, such as a body associated with sporting equipment including a fly rod during casting, a baseball bat, a tennis racquet or a golf club during swinging. For instance, data can be collected by one gyro according to the present invention is extremely useful in analyzing the motion of a fly rod during fly casting instruction, and can also be used during the research, development and design phases of fly casting equipment including fly rods and fly lines. Similarly, data collected by three gyros and three accelerometers is extremely useful in analyzing the three dimensional motion of other sporting equipment such as baseball bats, tennis racquets and golf clubs. This data can be used to support instruction as well as design of the sporting equipment.