53 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.

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 invention discloses a rehabilitation training upper limb movement measurement method based on depth trajectory coding, which comprises the following steps: acquiring movement data of an upper limb by using a sensor, processing the data by using an inertial navigation algorithm to obtain corresponding speed, direction and displacement, and further obtaining movement information of the upper limb in a three-dimensional space; performing speed correction and accumulative error correction on the motion information by using an AZVU method; coding the corrected motion information by using a track coding mapping technology to generate a track coding graph; and constructing a TEM-VGG model based on the pre-trained convolutional layer, inputting the trajectory coding graph into the model to obtain probability values corresponding to different upper limb motion posture categories, and completing measurement of the upper limb motion. The method has certain advantages on multiple indexes in an upper limb rehabilitation posture recognition task, the confusion condition during classification can be effectively reduced, the recognition accuracy is remarkably improved, and the method has excellent performance in a complex rehabilitation action recognition task.

An ink jet printer includes: a nozzle configured to eject ink toward a drawing target object; a storage unit that stores drawing data specifying an ejection timing of the nozzle at each of a plurality of offset positions, the ejection timing corresponding to drawing information; an optical movement measurement sensor that receives light from the drawing target object and generates a measurement value related to movement of the drawing target object in the conveyance direction based on the received light; a drawing control unit that controls ink ejection from the nozzle based on a current offset position based on the measurement value, and the drawing data; an evaluation unit that evaluates reliability of measurement by the optical movement measurement sensor; and an abnormality processing unit that executes an abnormality process when the reliability evaluated by the evaluation unit does not satisfy a predetermined criterion.

A system for measuring movement along a designated travel path includes an encoder assembly with a pair of encoder heads maintained a fixed distance apart. The encoder assembly is designed to simultaneously compile pairs of position measurements relative to a main track, with each encoder head utilizing a unique scale pitch. A signal processing unit in communication with the encoder assembly converts each pair of position measurements into the spatial domain and maps the calculated distance between position measurements. The signal processing unit identifies patterns in the mapped data which are directly attributable to interpolation error, for example, by performing either a fast Fourier transform or a discrete Fourier transform on the mapped data to yield spatial frequency peaks. Thereafter, the signal processing unit can filter out mapped data at the peak frequencies to minimize errors that may otherwise compromise encoder measurement accuracy.

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 invention discloses a method and a device for determining a movement track of a mandible and electronic equipment. The method comprises the steps that an auxiliary part, fixed to the gingiva, in the mouth of a target object is scanned through intraoral scanning equipment, intraoral scanning data are obtained, and the auxiliary part is provided with a feature structural part; acquiring mark point track data corresponding to the mark points on the feature structural component through face scanning equipment; and according to the mark point trajectory data and the intraoral scanning data, determining the motion trajectory of the mandible of the target object. The technical problem that mandible movement measurement in the prior art is not suitable for edentulous jaw patients is solved.

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.

The disclosure is directed to a method and apparatus for measuring and assessing limb movement properties. The method includes conducting a test protocol with a position, velocity, and resistance meter (PVRM); and obtaining raw data from the PVRM and transmitting the raw data from the PVRM to an electronic device. The method includes processing the raw data to obtain processed data; and obtaining a set of parameters based on the processed data. The method includes obtaining a classification result according to a classifying algorithm based on the set of parameters; and assessing, recording, and displaying a limb movement property according to the classification result.

The utility model belongs to the technical field of detection tools, and discloses a full-size automatic linear transplanting detection mechanism. The full-size automatic linear transplanting detection mechanism is provided with a mounting plate, a transplanting assembly for moving the mounting plate and a positioning assembly for positioning the mounting plate, the transplanting assembly comprises a linear guide rail and a transplanting cylinder for driving the mounting plate to slide along the linear guide rail; the positioning assembly comprises a positioning air cylinder installed on the installation plate, and a positioning air cylinder ejector rod is connected with a positioning pin. A positioning seat is arranged below the mounting plate, a positioning pin sleeve is mounted on the positioning seat, a positioning pin is positioned right above the positioning pin sleeve, and the mounting plate can be positioned after the positioning pin is inserted into the positioning pin sleeve. The automatic detection device is simple in structure and reasonable in design, can automatically move linearly and position in a linear movement measurement space, realizes automatic detection of the appearance size of a product, greatly improves the operation efficiency, ensures the accuracy of a measurement result, reduces the labor intensity of staff, and liberates the hands of the staff.

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.

To provide an information processing system and an information processing device that share information using a wristband or nail.SOLUTION: An information processing system 1 includes: a first information processing terminal device 110 to a fourth information processing terminal device 140 each including a short-range wireless communication unit that performs short-range wireless communication, a position measurement unit that performs position measurement, and a movement measurement unit that detects three-dimensional movement of upper limbs; and an information processing device 100 including a communication unit that acquires position information and three-dimensional movement information from the first information processing terminal device and the like through the fourth information processing terminal device, a position processing unit that processes an average position of the first to fourth information processing terminal devices based on the position information, and a movement processing unit that identifies the movement of the first to fourth information processing terminal devices based on the three-dimensional movement information. The information processing device further causes the first information processing terminal device or the like to cause a fifth information processing terminal device 150 to activate a predetermined function based on the movement identified by the movement processing unit.SELECTED DRAWING: Figure 1

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.

A system for measuring movement along a designated travel path includes an encoder assembly with a pair of encoder heads maintained a fixed distance apart. The encoder assembly is designed to simultaneously compile pairs of position measurements relative to a main track, with each encoder head utilizing a unique scale pitch. A signal processing unit in communication with the encoder assembly converts each pair of position measurements into the spatial domain and maps the calculated distance between position measurements. The signal processing unit identifies patterns in the mapped data which are directly attributable to interpolation error, for example, by performing either a fast Fourier transform or a discrete Fourier transform on the mapped data to yield spatial frequency peaks. Thereafter, the signal processing unit can filter out mapped data at the peak frequencies to minimize errors that may otherwise compromise encoder measurement accuracy.

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.

An ink jet printer 1 includes: a storage unit that stores drawing data specifying an ejection timing, which corresponds to drawing information, of a nozzle at each of a plurality of offset positions in a conveyance direction; an optical movement measurement sensor that includes an imaging device and generates a measurement value related to movement of a drawing target object based on a measurement image; a fixing portion for positioning and fixing the optical movement measurement sensor with respect to the nozzle such that a depth of field of the imaging device includes the drawing distance range of the nozzle with respect to a distance direction from the nozzle; and a drawing control unit that controls ink ejection from the nozzle based on a current offset position based on the measurement value and the drawing data.

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.

The application discloses a kind of target airspace in the process of spacecraft flight movement measurement method and system, it is related to deep space measurement technical field, method includes: in the preset time period, real-time determination with target region as bottom surface and with target ground-based antenna as vertex solid cone in target airspace, obtain the target airspace of each preset time in the preset time period, in the preset time period, control target ground-based antenna to reference point is tracked;In the tracking process, at each preset time, the downlink signal of spacecraft in target airspace is tracked and measured by target ground-based antenna, and the downlink signal measured by tracking is processed, and the flight movement data of spacecraft is obtained.The application can complete the radio open-loop measurement of spacecraft flight movement process in target airspace, and the flight state of spacecraft can be further evaluated according to the obtained flight movement data.

The present invention discloses an upper limb movement measurement method for rehabilitation training based on depth trajectory encoding, which includes collecting movement data of the upper limb using a sensor, processing the data using an inertial navigation algorithm to obtain corresponding speed, direction, and displacement, and further obtaining the movement information of the upper limb in three-dimensional space; using the AZVU method to correct the speed and cumulative error of the movement information; using the trajectory encoding mapping technology to encode the corrected movement information to generate a trajectory encoding map; constructing a TEM-VGG model based on a pre-trained convolutional layer, inputting the trajectory encoding map into the model to obtain probability values corresponding to different upper limb movement posture categories, and completing the measurement of upper limb movement. The present invention has certain advantages in multiple indicators in the upper limb rehabilitation posture recognition task, can effectively reduce the confusion situation during classification, significantly improve the recognition accuracy, and has excellent performance in complex rehabilitation movement recognition tasks.

The application relates to the technical field of motor processing equipment, and relates to a motor stator assembling and measuring device and a measuring method thereof.The device comprises an assembling machine table, a measuring support is fixed to one side of the top of the assembling machine table, a multi-point measuring mechanism is fixed to the measuring support, the multi-point measuring mechanism comprises a movable electric slide rail fixed to the measuring support, an inner support is connected to the movable end of the movable electric slide rail, a side support is slidably connected to the measuring support and fixed to the inner support.The device can realize multi-point dynamic measurement during stator movement, effectively eliminates the detection blind area existing in traditional fixed-point measurement, improves the comprehensiveness and precision of the brake assembly detection, automatically eliminates the stator placement gap during the movement measurement, effectively avoids the measurement error caused by the equipment operation vibration, guarantees the stable and reliable measurement precision, simultaneously realizes multi-directional dynamic visual monitoring during the movement, realizes the dead-angle-free defect screening of the workpiece, and comprehensively guarantees the brake assembly quality of the stator.

The utility model relates to a steering engine service life detection device, relates to the technical field of unmanned aerial vehicles, and is used for solving the technical problems that in the prior art, the measurement precision of the working stroke and the loading condition of a steering engine is low, and the steering engine is easily damaged by a fixture for fixing the steering engine. The steering engine service life detection device comprises a support assembly, a sensor dial plate, a switching assembly, a transmission assembly, a loading assembly and a distance measurement assembly, a steering engine is connected with the loading assembly through the switching assembly and the transmission assembly, and the switching assembly is connected with the distance measurement assembly; the loading assembly comprises fixing seats, a shaft sleeve and a compression spring which are parallel to one another, a push-pull rod is further arranged between the fixing seats, and the push-pull rod penetrates through the shaft sleeve and the compression spring. According to the utility model, the protectiveness of the steering engine can be increased, the simulation of bidirectional periodic loading of the steering engine is realized, and the mobile measurement precision of the steering engine is improved.

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 dynamic profiling system comprises an initially planar grid formed by first parallel fibers and second parallel fibers oriented, advantageously, orthogonally to the first fibers. The two fiber sets may be woven or non-woven with respect to one another. As a force is placed on grid, each of the two sets of fibers are pulled into the limits of the grid as the grid pockets. The amount of each fiber pulled in, the measurement being fiber end movement measurement, length passage through a passageway, etc., is calculated and is used to form a three-dimensional model of the deformation shape.

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.