158 results about "Movement measurement" patented technology

Relative positions of a plurality of mobiles communication devices, which form a wirelessly networked group of mobiles, are determined at each of the mobiles of the group without the need for external positioning information obtained from a location remote from the actual locations of the mobiles of the group. The relative positions are determined at the mobiles of the group based on mobile-to-mobile range measurements, distance and direction of movement measurements and altitude measurements made at the respective mobiles.

A device for analyzing and monitoring exercise done by a user comprises at least a portable support (2), electric power supply means, sensor means (3) for measuring the exercise done by the user during at least one predetermined period of time, expressed at least in the form of at least one non-dimensional parameter, at least one memory (4) designed to archive data relating to the measurement of exercise done by the user, display means (5) for displaying the measurement of the exercise done by the user and the data archived in the memory, data communication means (6a), (6b) and at least one processing unit (7a), (7b).

A navigation system for tracking the position of an object includes a GPS receiver responsive to GPS signals for periodically providing navigation state measurement updates to a navigation processor. The system also includes a dead-reckoning sensor responsive to movement of the object for providing movement measurements to the navigation processor. The navigation processor determines object navigation states using the navigation state measurement updates and propagates the object navigation states between measurement updates using the movement measurements.

A method for calibrating the position and orientation of a 6-DOF sensor system mounted on a multi-segmented structure, such as the human body, is provided. The method includes a stage for mounting the sensors on the body, a stage for acquiring the 6-DOF kinematics from those sensors, a calibration stage whereby the prior stages are used to determining the sensor-to-segment transformations that are most physiologically optimal during relative skeletal motions, and a stage that to periodically monitor and correct for sensor slippage.

A system for monitoring a joint of a patient includes multiple sensors to be disposed near a joint and to measure or observe actions or physical quantities associated with the joint; and at least one communications module coupled to the sensors to receive data from the sensors and to transmit sensor information to an external device. The system also includes a patient device and clinician device which can be used to, for example, monitor and display information obtained from the sensors, determine range of motion measurements from the sensor data, show progress in physical therapy, take a photograph or video of the site on the patient, obtain a pain score, and include friends for providing encouragement during physical therapy.

A feedforward-movement training apparatus, which is capable of restoring functions of fast and accurate movements in a relaxed state by training feedforward-movements includes a movement working portion where a patient causes a body part to do, within a time limit, a feedforward-movement between a start point and an end point arranged in advance, a movement measuring portion for measuring the feedforward-movement of the patient, and a movement feedback portion for giving the result of the measurement made by the movement measuring portion to the patient. A feedforward-movement evaluation system objectively and easily evaluates the degree of skillfulness of the patient's feedforward-movements in the aforementioned feedforward-movement training apparatus and thus restores functions to execute fast and accurate movement in a relaxed state more effectively.

The invention discloses a laser speckle testing system used for measuring the movement velocity of nano-particles in nano-fluid. The system is characterized in that the irradiation mode of a light source and the receiving mode of a recording device are improved according to the optical character of the nano-particles. An extender lens system is used for two-dimensional expansion of laser beam to form the flowing nano-particles that are irradiated by a surface light source; the recording device is arranged on the light path which positively faces to the incident light direction at the other side of a transparent pipe of the tested nano-fluid according to the rayleigh scattering characteristic, so that the speckle image of the nano-particles is recorded clearly; the laser speckle testing system of the invention is not only used for measuring the movement of the nano-particles in the nano-fluid, but also applicable to the movement measurement of micron particles; the system has simple structure and wide range of usage, and can be widely applicable to speckle measurement of the movement velocity of fluid.

The invention discloses a large-size workpiece movement measurement robot system and method. The system and method are based on a target tracking system, and depends on a mobile device, and a visual measurement system and a three-dimensional target which are carried by a robot, and a global control means is created, thereby enabling the target tracking system, the visual measurement system and thethree-dimensional target to be combined, removing the tedious step of pasting a target in a conventional visual measurement system, avoiding an error caused by the target matching and the impact on ameasurement error from the robot, and achieving the automation of high-precision measurement. The coordinate system of the target tracking system is the world coordinate system, and the point cloud data measured by the visual measurement system is unified in the world coordinate system. The calibration precision plays a key role in a final measurement result. Before measurement, the motion planning of the large-size workpiece movement measurement system and the calibration of a measurement system need to be completed, so as to achieve the automatic measurement of the large-size workpiece movement measurement robot system.

An exercise assistance system labels sensor signals received from a movement measurement device to identify repetitions within the sensor signals. The movement measurement device can transmit motion data describing the user's movement to the exercise assistance system, and includes the sensor signals generated by one or more sensors in the movement measurement device. The exercise assistance system generates a combination signal from the received sensor signals and passes the combination signal through a low pass filter to generate a labeling signal. The exercise assistance system can generate three types of labels for the labeling signal identifying different parts of repetitions. The exercise assistance system labels the sensor signals using the generated labels and can identify repetitions in the labeled sensor signals using a classification model.

A method and system for identifying a moment of inertia (MOI) of a work piece includes coupling the work piece to a manipulator assembly such as a 6-axis robotic arm or 3-axis gimbal. The manipulator assembly includes a force/torque sensor and a motion feedback sensor. The manipulator assembly moves the work piece with three-dimensional motion. Force, torque and movement measurements are made as the work piece moves. The MOI is identified according to the force and torque measurements and rotational accelerations derived from the measured movement. The measurements may be used to identify the products of inertia (POI) and center of mass of the work piece.

The present invention relates to a video measurement method for large-scale wind power blade movement tracking. The method comprises the steps of: spraying a random speckle patterns and pasting orienteering reflect light mark points; dividing the surface of the blade into a plurality of measurement areas, wherein different measurement areas put corresponding camera sets; performing camera calibration; controlling each camera to simultaneously collect mages when the large-scale wind power blade is rotated; after rotation correction according to the collected speckle patterns, performing analysis of each image collected by each camera, calculating center coordinates of the reflect light mark points, and performing multi-pole matching of related points in each image collected by each camera;performing three-dimensional reconstruction according to the collected images and results of multi-pole matching, obtaining three-dimensional coordinates of each point on the large-scale wind power blade, analyzing the change conditions of the orienteering reflect light mark points on the large-scale wind power blade in the deformation process, and obtaining the deformation of surface key points of the large-scale wind power blade. The video measurement method for large-scale wind power blade movement tracking can accurately obtain the space coordinates of any position of the feature surface in each state to achieve the purposes of tracking and movement measurement.

The invention discloses an apparatus for evaluating the tongue strength of a subject during a sucking event. The apparatus includes an insert positioned within a nipple element to provide an output in response to deformation of the nipple element during a sucking event. The output is at least one of resistive force exerted against the subject's tongue and movement measurement of deformation force exerted on the nipple element during the sucking event. The apparatus is configurable to evaluate nutritive sucking (NS) or non-nutritive sucking (NNS) capabilities of the subject. The insert may be a sensing device, a compliance element, an intermediate device or a combination of these. A coupling device is configured to position the insert relative to the nipple element and/or to receive output from the insert. A method is further disclosed, which includes evaluating tongue strength of a subject during NS or NNS and using inserts providing increasing levels of resistive force to exercise the subject's tongue.

A motion detection system, and more particularly, a non-contact, movement-measurement and position-tracking device, and a method of applying the device on long, non-textured or regularly textured metal objects at an elevated temperature are invented. The invention takes advantage of the oxidation marks, also known as scale, on the surface of the metal object to track the motion. The oxidation marks are typically random and irregular, providing a means for pattern tracking using imaging technologies.

Methods, systems, and computer-readable media for generating a projected image are provided. Movement measurements are received from an accelerometer within a projection device. A determination is made as to whether the movement measurements indicate movement of the projection device. Upon determining that the movement measurements indicate movement of the projection device, a movement correction factor is determined based on the movement measurements to compensate for the movement of the projection device. The projection device is caused to generate a projected image according to the movement correction factor.

A method and apparatus for measuring breathing movements and determining breathing patterns, by measuring the simultaneous movement of a plurality of points of a human subject, such that a breathing pattern may be determined based on data obtained in a single acquisition. The method provides a symmetry breathing pattern parameter.