26 results about "Movement measurement" patented technology

The invention discloses an error compensation inductance sensor calibration method and system, and the method comprises the steps: controlling a macro-micro composite driving platform to drive a moving part provided with a to-be-calibrated inductance sensor, and enabling the moving part to carry out the continuous displacement movement relative to a fixed standard target surface; measuring the actual displacement of the moving part to obtain a standard displacement sequence; the actual output voltage of the inductive sensor to be calibrated in the movement process is synchronously collected, and an actual measurement value sequence is formed; solving measurement deviation, generating a measurement deviation sequence, and dividing the sequence into not less than three compensation intervals according to a displacement range; a compensation value lookup table is established in each compensation interval, and calibration parameters used for correcting zero offset, gain drift and nonlinear characteristics are generated. Displacement measurement and sensor output synchronous acquisition are combined, zero offset, gain drift and non-linear errors can be corrected in a targeted mode, and compensation fineness and adaptability are improved.

The invention discloses a submarine topography reconstruction system and method based on optical mobile measuring and scanning, and relates to the technical field of ocean exploration, and the system comprises the following units: an image collection unit, which is used for coordinating the emission of 532nm pulse laser and the collection of a gating camera image through a synchronous sequential circuit, a triangulation measurement optical structure with separated emission and reception is adopted, and a submersible can be carried for mobile measurement and scanning; the system calibration unit is used for carrying out joint calibration on camera parameters and a laser plane so as to determine system calibration parameters, so that the spatial position of a laser stripe accurately corresponds to the actual coordinate of the target surface; and the image processing unit is used for preprocessing the image acquired by the system and further extracting the coordinates of the center line of the laser stripe in the preprocessed image. According to the invention, adjacent splicing can be carried out through continuously collected laser stripe images to construct two-dimensional submarine landform information, and three-dimensional reconstruction of submarine topography can be carried out by using generated point cloud data.

The invention provides a vision-based auxiliary-mark-free port machinery equipment movement distance detection method and system, and relates to the field of computers.The method comprises the steps that monocular cameras are installed on lifting appliances on the two sides of a gantry crane, the gantry crane is controlled to move along a preset track, and a calibration image sequence containing ground linear features is obtained; a radial distortion parameter of the camera is calculated, a nonlinear mapping model from a pixel coordinate system to a world coordinate system is established, a ground unshielded area is selected as a dynamic monitoring area, and a texture richness thermodynamic diagram is generated; after receiving a measurement instruction of a scheduling system, initializing an optical flow accumulator, loading a current feature point set, synchronously collecting monocular video streams, and distributing the monocular video streams to at least three preprocessing threads to execute differential image enhancement; optical flow calculation is executed on all preprocessing results in parallel, a multi-mode optical flow vector field is generated, and three-level optical flow screening is implemented. The precision and the sensitivity of small-range movement measurement of the gantry crane are improved through an optical flow method, and the influence of environmental factors on a measurement result is reduced.

The present disclosure is directed to a device configured to detect whether the device is in a bag or outside of the bag. The device determines whether the device is in or outside of the bag based on distance measurements generated by at least one proximity sensor and motion measurements generated by at least one motion sensor. By using both distance measurements and motion measurements, the device is able to detect whether the device is in the bag or outside of the bag with high accuracy and robustness.

Systems, methods, and other embodiments described herein relate to detecting whether a user in a vehicle is experiencing motion sickness. In one embodiment, a method includes determining whether a user in a vehicle is experiencing motion sickness based on a first movement measurement of the vehicle and a second movement measurement of a head of the user using a radar sensor and in response to determining whether the user is experiencing motion sickness, activating mitigation control.

The utility model belongs to power generation equipment, and particularly relates to an axial movement measuring and mounting structure of a fan of a thermal power plant. The measuring assembly is connected with the fan shaft and is internally provided with an accommodating cavity; the connecting assembly is arranged in the accommodating cavity of the measuring assembly, and comprises a transmission shaft, an input end of the transmission shaft extends out of the accommodating cavity; one end of the threaded rod is connected with the output end of the transmission shaft; the extrusion pipe is connected with the end, away from the transmission shaft, of the threaded rod. The pin rod is arranged on the inner wall of the containing cavity, and the axis of the pin rod is perpendicular to the axis of the extrusion pipe; the fixed end of the spring is connected to the inner wall of the containing cavity, and the telescopic end is connected with the pin rod. According to the utility model, the problem of abrasion between the sensor and the fan shaft caused by direct installation of the photoelectric sensor on the shaft for displacement measurement is solved, and the problem of data deviation caused by influence on the measurement precision due to instantaneous impact fluctuation generated during high-speed operation of the fan is also solved.

The application discloses a seabed topography and geomorphology reconstruction system and method based on optical mobile scanning, and relates to the technical field of ocean exploration. The system comprises the following units: an image acquisition unit, which is used for coordinating the emission of a 532nm pulsed laser and the acquisition of a gated camera image through a synchronous timing circuit, and adopting a triangulation optical structure with separated emission and reception, and can be carried on a submersible for mobile scanning; a system calibration unit, which is used for jointly calibrating camera parameters and a laser plane, so as to determine system calibration parameters, and make the spatial position of a laser stripe accurately correspond to the actual coordinates of a target surface; and an image processing unit, which is used for pre-processing images acquired by the system, and further extracting the center line coordinates of a laser stripe in the pre-processed images. The application can not only perform adjacent splicing through continuously acquired laser stripe images, and construct two-dimensional geomorphology information of the seabed, but also perform three-dimensional reconstruction of seabed topography by using generated point cloud data.

This application discloses an automatic axial movement measurement device, including a mounting frame, a clamping mechanism, a compensation mechanism, a first sensor, and a second sensor. The clamping mechanism is mounted on the mounting frame and is used to connect a gear shaft. Along the axial direction of the clamping mechanism, the clamping mechanism can reciprocate relative to the mounting frame. The compensation mechanism includes an abutment portion and a transition structure. Along the axial direction of the clamping mechanism, the abutment portion is inserted into the transition structure and is slidably connected to it. The transition structure is connected to the mounting frame. Using the device provided in this application, when the outer shell of the product to be measured bends downward due to the external force of the clamping mechanism, the abutment portion can move synchronously with the movement of the outer shell. Simultaneously, the two sensors acquire the values ​​of the moving distances of the clamping mechanism and the abutment portion, and the difference between the two values ​​represents the axial movement of the gear shaft. Compared with the prior art, this device can automatically measure the axial movement and effectively improve the measurement accuracy and efficiency of the gear shaft's axial movement.

The invention discloses a reactor inlet optical power density measurement method and system. Firstly, a heat flow meter is fixed to the inner surface of a reactor cover plate through a heat insulation support, a heliostat field is controlled to form light spots at the reactor inlet, the cover plate is driven to execute reciprocating motion of closing and then opening, and the heat flow meter is driven to penetrate through a light spot area to complete one-dimensional scanning; synchronously acquiring a heat flow meter reading signal and recording a motion video through an image recording unit; the physical position of the heat flow meter on an inlet plane is identified based on a video and a pre-established coordinate mapping relation, position information and readings are associated to obtain a discrete energy flow density measurement value, two-dimensional energy flow density distribution is reconstructed through a spatial interpolation algorithm, integration is carried out on a distribution diagram on an inlet area to calculate total incident light power, and the total incident light power is calculated. The conventional opening and closing action of a cover plate of the reactor is used as a scanning driving mechanism, and the point-to-surface energy flux density full-field reconstruction is realized by combining the mobile measurement of a single-point sensor with a visual positioning technology.

The present invention relates to a smart dumbbell for measuring a user's grip strength and a smart device-based exercise amount measurement system including same. The exercise amount measurement system comprises: a smart muscle band which is mounted on a specific body part of a user, obtains an electromyogram signal, generated from muscles of the body part, by using an embedded electrode for electromyogram measurement, and calculates muscle fatigue and muscle activity of the muscles on the basis of the electromyogram signal; a smart dumbbell which generates a strain sensing signal through an embedded first strain sensor when gripped by the user, and inputs the strain sensing signal to a pre-trained neural network-based grip strength prediction model to generate grip strength data; and an evaluation system which stores the muscle fatigue, the muscle activity, and the grip strength data in an internal storage and monitors same.

A standard gauge coordinate collecting device comprises a base, an elastic piece, a sliding block and a sliding seat, the base and the sliding seat are installed on the lower side of a track measuring vehicle, the sliding block is slidably connected to the inner side of the sliding seat, one end of a supporting rod is connected to one side of the sliding block, the other end of the supporting rod is slidably connected to the base, and the elastic piece is connected between the base and the sliding block. The rolling piece penetrates through the sliding seat, is connected to the lower side of the sliding block and is in rolling connection to the inner side of the track; the lower end of the prism group is connected to the upper side of the sliding block. According to the design, the device is connected with a track detection vehicle, so that synchronous movement measurement can be realized by means of a vehicle body; the rolling piece is connected with the track, and the prism group is placed above the sliding seat and is not contacted with the track, so that the prism group is prevented from being directly contacted with the track to cause abrasion; by arranging the elastic piece, the rolling piece can be continuously and tightly contacted with the track, so that the measurement precision can be improved; and the sliding block and the sliding seat are arranged, and a sliding connection mode is adopted, so that the moving process of the rolling piece and the prism group is more stable.

Techniques for using current and historical driving data to detect crashes are provided. In some examples, a crash detection application executing on a computing device receives movement measurements indicating motion of the device during a drive in a vehicle from a sensor arrangement coupled to the device and the application analyzes the movement measurements to detect motion of the vehicle. The application receives crash detection criteria from a crash detection management server system that were generated using a historical driving performance of the vehicle, of a driver associated with the computing device, or both. By applying the crash detection criteria to the motion of the vehicle, the application determines that the vehicle was involved in a crash.

A robot learning method for performing a learning process to generate robot motion data based on a measurement of a work movement that involves actuation on an actuation object (7, 8) by a hand (5) of a teacher (U1), wherein the robot motion data include a sequence of joint displacement as a movement of a robot hand mechanism (6) corresponding to the working movement, wherein The robot learning process, as steps performed by a computer system (100), includes the following: a step of capturing a first measured posture, which is obtained by measuring a time series posture that includes a position and posture of the actuated object (7, 8) during the work movement; a step of capturing a second measured posture, which is obtained by measuring a time series posture, which includes a position and posture of the hand (5) of the teacher (U1) during the work movement; a step of the teacher's (U1) recording the activity on the object of activity (7, 8); and a step of generating a learning posture to generate the robot motion data based on the first measured posture, the second measured posture and the recorded activity.

A system and method for scoring movement disorder symptoms comprises a movement measurement data acquisition system and processing comprising an algorithm trained on standardized scores. The movement measuring apparatus may comprise sensors such as accelerometers or gyroscopes or may utilize motion capture and / or machine vision technology or various other methods to measure tremor, bradykinesia, gait and balance disturbances, dyskinesia, or other movement disorders in a subject afflicted with Parkinson's disease, essential tremor or the like. The system outputs a score having an inclusive 0-4 scale that correlates to the UPDRS and MDS-UPDRS, or to a particular component of the movement disorder such as speed, amplitude or rhythm, but has greater resolution and lower variability. In some embodiments, the system is used to provide recommendations for treatment and / or to provide treatment in the form of pharmaceutical drugs and / or electric stimulus as part of a closed-loop system.

A method and apparatus for determining a movement trajectory of the mandible, and an electronic device. The method for determining a movement trajectory of the mandible comprises: scanning, by means of an intraoral scanning device, an auxiliary component fixed on the gingiva in the oral cavity of a target object to obtain intraoral scanning data, wherein a feature structural component is arranged on the auxiliary component (S202); collecting, by means of a facial scanning device, marker point trajectory data corresponding to marker points on the feature structural component (S204); and determining a movement trajectory of the mandible of the target object on the basis of the marker point trajectory data and the intraoral scanning data (S206). The technical problem in the related art that mandibular movement measurement is not suitable for edentulous patients is solved.

Various arrangement for determining whether an access point has been moved or reoriented are detailed. An on-site small cell installation can be located at a facility of an entity. The installation can include a primary small cell that is configured to communicate, via a wired backhaul connection, with a cellular network core hosted by a cellular network provider. The installation can also include a secondary small cell comprising an inertial measurement unit (IMU). The secondary small cell can be configured to perform movement measurements using the IMU and transmit messages based on the movement measurements to a cellular network core.

The invention discloses a self-aligning bearing axial displacement measuring device, which comprises a base, and one end of each of a plurality of first threaded rods is fixed on the upper surface of the base; the other ends of the first threaded rods are fixed to the lower surface of the top plate. Limiting devices are fixed to the upper surface of the base and the lower surface of the top plate respectively, measuring cylinders are fixed to the opposite sides of the two limiting devices respectively, inner ring clamping plates are fixed to the opposite sides of the two measuring cylinders respectively, the outer surfaces of the two inner ring clamping plates are opposite, outer ring clamping plates are fixed to the two sides of each inner ring clamping plate respectively, and observation holes are formed in the positions, close to the inner ring clamping plates, of the measuring cylinders. A second threaded rod penetrates through the base, the top plate, the two limiting devices, the two measuring cylinders and the two inner ring clamping plates and is fixed, a first nut is fixed to the position, located at the observation hole, of the second threaded rod, and a hand wheel is fixed to the end, close to the base, of the second threaded rod. The invention further discloses a method for measuring the axial channeling amount. The axial channeling amount of the self-aligning bearing can be accurately measured, and the axial channeling amount is controlled to be 0.03 mm-0. 05 mm.

Techniques for optimizing mobile device resource consumption while detecting driving activities are provided. In examples, an application executing on a mobile device determines that the device is disposed in a vehicle during a drive and receives movement measurements indicating motion of the device caused by a user or the vehicle from a sensor arrangement of the mobile device. The movement measurements are analyzed to detect an occurrence of a driving event during the drive and a notification of the driving event is generated. Audio routes available to the operating system of the device are received by the application and a determination is made that the user is driving the vehicle based on the available audio routes. In response, the notification is provided to the user.

To provide an operation measurement device and an operation measurement method which can accurately and surely measure an operation of a dynamic body.SOLUTION: An operation measurement device comprises: module information processing parts 231-235 which decide a position and a direction of a prescribed portion of an operation measurement object at a prescribed time interval on the basis of first estimation information being information about the absolute position and direction estimated about the prescribed portion of the operation measurement object and second estimation information being information about the position and direction of the prescribed portion estimated by measuring inertial force at the prescribed portion; and an operation measurement part 236 which measures the operation of the operation measurement object on the basis of the decided information transition. The module information processing parts 231-235, when a change amount of the corresponding estimation information becomes equal to or greater than a prescribed value in a case where the position and direction of the prescribed portion of the operation measurement object are decided on the basis of one of the first estimation information and the second estimation information, performs switching so as to decide the position and direction of the prescribed portion of the operation measurement object on the basis of the other estimation information.SELECTED DRAWING: Figure 3

The present application provides a finger tapping measurement processing terminal, system, method and computer program, without wearing special dedicated instruments, and without using expensive special devices for evaluating and analyzing measurement information, using widely popular terminals such as smart phones, tablet computers, etc. in a simple way, cheap and good usability for finger tapping movement measurement and processing. The finger tapping measurement processing terminal (100) measures finger tapping movement and processes the measurement results, comprising: a touch panel (103) arranged on one side of the terminal, capable of displaying information related to finger tapping movement and being tapped by one finger of two fingers of the same hand of the user holding the terminal; a finger detection unit (101, 102) detecting the movement of the finger tapping the touch panel (103); and a processing unit performing the following processing: based on the detection information obtained by the finger detection unit, measuring the distance between the two fingers when the finger tapping movement between the other finger of the two fingers and the finger tapping the touch panel, wherein the other finger holds the terminal on the other side opposite to the touch panel.

The utility model belongs to the technical field of steam turbines, and particularly relates to a steam turbine blade anti-abrasion treatment device which comprises a machining table, supporting frames are symmetrically and fixedly connected to the upper surface of the machining table, and a guide rod and a lead screw are rotationally connected to the opposite sides of the two supporting frames from top to bottom respectively. The outer wall of the guide rod is slidably connected with a sliding seat, and the upper side wall of the supporting frame is fixedly connected with a first driver. The thickness of the stator blade is movably measured through the laser range finder, so that the thickness change of the surface of the stator blade is measured, data is transmitted to the controller to be recorded, and the telescopic length of the first electric push rod is controlled according to the measured data; the telescopic amplitude of the first electric push rod during movement is kept consistent with the movement measurement data change of the laser range finder, so that the movement track of the spraying head is attached to the surface of the stator blade, constant-speed movement of the spraying head is achieved, and the spraying uniformity is effectively improved.

A system and method of supervising vehicle positioning of a vehicle along a guideway where the vehicle comprising a supervisory controller, at least two controllers communicatively connected with the supervisory controller, an inertial measurement unit (IMU) and a speed measurement sensor includes receiving, by the controllers, speed measurements from the speed measurement sensor and motion measurements from the inertial measurement unit. The two controllers each estimate the along-track position of the vehicle using a track constrained UKF function based on the received speed measurements and motion measurements. The system executes protection level and protection level supervision functions on the supervisory controller to validate the along-track position estimates. The protection level supervision function uses a Stanford diagram verification technique.

A computer-implemented method for adapting a training program of a user, including: storing a database including measurement data of physical exercises the user has performed, the measurement data including at least one of heart activity measurement data and motion measurement data; receiving a user input to select a weekly template for the training program, the weekly template including a training schedule including a plurality of pre-programmed repeating exercises on the weekly template; receiving a user input indicating a repeating exercise the user indicates to perform outside the training program; acquiring, from the database on the basis of the user input indicating the repeating exercise, measurement data of past one or more physical exercises of the repeating exercise; determining, on the basis of the measurement data, a training effect of the past one or more physical exercises and determining at least one repeating physical exercise of the training schedule providing a training effect closest to the training effect of the past one or more physical exercises; adapting the training schedule by replacing the determined at least one repeating physical exercise of the training schedule with exercises of the repeating exercise the user indicates to perform outside the training program; and outputting, via a user interface, instructions for the user to follow the adapted training schedule.

According to an aspect, there is provided a fall detection apparatus comprising one or more processing units configured to: obtain a first input indicative of which one or more of a plurality of fall detection algorithms detected a potential fall of a subject, wherein each fall detection algorithm of the plurality of fall detection algorithms is associated with a respective type of fall and detects a potential fall of the associated type by analyzing a set of movement measurements for the subject, wherein each respective type of fall has an associated initial state of the subject; obtain a second input indicative of a state of the subject prior to the potential fall, wherein the state of the subject is determined by analyzing a set of measurements from one or more sensors in an environment of the subject; compare the determined state of the subject prior to the potential fall to the initial state for each type of fall associated with any potential fall indicated in the first input; and output an indication that the subject has fallen if the determined state of the subject matches the initial state of any respective type of fall associated with any potential fall indicated in the first input.

The utility model provides a detection structure for a billiard cue, which can record motion data and realize technical support by giving the motion data to players. The detection structure is mounted on a billiard cue and comprises a motion measurement module, a motion detection module, a motion detection module and a motion detection module, and the motion measurement module is used for performing motion tracking detection including acceleration and angular velocity on the billiard cue of a player; the communication display module is used for performing communication display on the motion data; the main control module is connected with the motion measurement module and the communication display module and is used for receiving motion tracking detection data, recording the data and then transmitting the data to the communication display module for displaying; and the startup and shutdown control module is connected with the main control module and is used for realizing startup and shutdown control.