31 results about "Rope" patented technology

The invention discloses an anti-tangent, cotangent, secant and cosecant function demonstrating and graph drawing instrument which is made according to a rectangular coordinate definition of an anti-trigonometric function and by combining pushing-turning principles with slider-connecting rod characteristics. The instrument comprises a support, a demonstrating device, a drawing mechanism and a drawing board, the demonstrating device is mounted on a lower slideway and an upper slideway of uprights, and the drawing mechanism is connected with the uprights, the lower slideway, the upper slideway and a guide rod, and connected with the demonstrating device through a soft rope and a pull rod. The above components are combined by adopting different assembly modes, anti-tangent, cotangent, secant and cosecant function relations can be demonstrated visually by only pushing a handle on the push rod, continuous and accurate function graphs can be drawn on the drawing board, paper or any fixed planes, and type forms of anti-tangent, cotangent, secant and cosecant can be demonstrated while corresponding graphs can be drawn. The drawing instrument can be used in a classroom, a drawing room, a construction site and a self-study place for students and is high in drawing efficiency, clear and accurate in graph, simple to operate, convenient to carry and complete in function.

The invention relates to a simulation method for a spatial rope tied robot system and based on a mixed unit method. A rope section with strong stress variation and close to a releasing point is calculated through a precise Ritz method and rope sections with smooth stress variation at other positions are calculated through a simple 'bead model'. The number of 'bead points' is increased in releasing process through a mechanism completely identical to the 'bead model' so that on one hand, the length of the rope section calculated through the Ritz method is strictly limited and therefore calculation accuracy and effectiveness of the Ritz method are guaranteed, and on the other hand, the rope section with the strongest stress variation is calculated through the Ritz method so that introduction of 'anchoring points' for calculation of a continuously increased rope is avoided and calculation accuracy and calculation efficiency of the 'bead model' are effectively improved.

The invention discloses a human motion action analysis method based on time series regression prediction. The human motion action analysis method mainly comprises the steps of rope skipping video acquisition, video data preprocessing, coordinate point acquisition, feature sequence construction, regression prediction model establishment and model calling, collects video stream data in the process of forward shaking and double-leaping of a human body through a mobile phone, records and stores basic information of the target object, including names, genders, ages, heights, weights and made motionnames, constructs a regression prediction model by means of a deep neural network, solves the long-time motion analysis and motion potential discovery problems in the motion training process, and provides a reference basis for motion analysis and training strategy proposal in the motion process.

The invention discloses a rope skipping posture and number recognition method based on computer vision. An ST-CGN model is used for training a skeleton sequence topological graph structure of each frame of image with extracted features; softmax is carried out on the features extracted by the ST-CGN, action classification and confidence are output, and rope skipping action counting is carried out if action classification output is rope skipping; and cosine similarity between the standard action feature vector and the current action feature vector is calculated, and when the cosine similarity isgreater than a preset threshold, it is judged that the current action is a standard action. According to the method, whether the rope skipping posture is correct or not can be judged by using the GCNand cosine similarity algorithm, and the rope skipping number can be calculated by using a maximum value or minimum value method.

The invention discloses an animation playing method and device based on a virtual environment, equipment and a storage medium, and relates to the field of virtual environments. The method comprises the following steps: receiving a rope release signal; obtaining a grid model of the virtual rope and animation parameters corresponding to the grid model according to the rope release signal, the grid model being used for determining a rope contour of the virtual rope, and the animation parameters being used for determining a rope form of the virtual rope; rendering the animation effects corresponding to the animation parameters frame by frame in combination with the grid model, and playing the rope animation in the virtual environment. The grid model and animation parameters of a virtual rope are obtained, the animation effects corresponding to the animation parameters are rendered frame by frame, the virtual rope is displayed in the virtual environment in the form of the three-dimensionalvirtual object, so that the authenticity of the virtual rope in the virtual environment is improved, and the association degree of the virtual rope and the three-dimensional virtual environment is improved.

The invention discloses a rich text editor and an editing method based on a three-dimensional engine, which are used for solving the technical problems that the rich text in the existing three-dimensional engine is single in style and fixed and cannot be edited and typeset dynamically in real time. The method comprises the following steps: firstly, editing and generating a character string conforming to a Rope data structure; wherein the character substring of each leaf node in the Rope data structure carries a corresponding format, then analyzing the Rope data structure, sequentially readingthe character substrings of each leaf node in the Rope data structure, and displaying the character substrings in a designated display area of the three-dimensional engine in the corresponding format;wherein when the character substrings are displayed, dynamic typesetting is carried out according to the size of a three-dimensional engine display area and the format of each character substring, and the typesetting comprises line changing and character spacing adjustment. By means of the Rope data structure, multi-style flexible display, real-time editing and dynamic typesetting of the rich text are achieved.

The invention relates to the technical field of computer vision, and discloses a rope connection optimization method based on an unreal engine and related equipment. The rope connection optimization method based on the unreal engine comprises the steps that the sizes of the sections of an object and a rope to be connected are obtained respectively, and a skeleton model is created and arranged between the object and the rope according to the sizes of the sections; a skeleton midpoint coordinate, a skeleton starting point coordinate, a skeleton end point coordinate and a rope end point coordinate are acquired in real time; according to the skeleton starting point coordinate, the skeleton terminal point coordinate and the rope terminal point coordinate, a rotation angle of the skeleton modelrotating to a plane where the object and the rope are located is determined, and the skeleton model is controlled to rotate; according to the skeleton starting point coordinates, the skeleton midpointcoordinates and the rope end point coordinates, the angle between the skeleton model and the rope is calculated, the skeleton model is controlled to be bent according to the angle so as to smoothly connect the object and the rope. By means of the scheme, the joint of the rope and the object in the virtual engine can be smooth and more authentic.

The invention discloses a design method of a rope-driven micro-instrument external force indirect detection model. The design method comprises the following steps: establishing a rope-driven micro-instrument system complete kinetic model; establishing a micro-instrument position estimator and a parameter change model thereof under the condition of no external force on the basis of the complete kinetic model of the micro-instrument system; carrying out segmented identification on the micro-instrument position estimator model under the condition of no external force, and establishing a dynamic parameter library of the micro-instrument position estimator under the condition of no external force; establishing a parameter autonomous selection model of the micro instrument position estimator under the condition of no external force; the difference between the output of the micro-instrument position estimator parameter autonomous selection model under the condition of no external force and the position estimation value output by the micro-instrument system complete kinetic model under the condition of external force is calculated, and the difference value is regarded as disturbance causedby the external force to establish a rope-driven micro-instrument external force indirect detection model. The detection model obtained by the design method greatly improves the detection accuracy ofthe external force of the rope-driven micro instrument.

The invention is suitable for the technical field of artificial intelligence, and provides a jump counting method and device, terminal equipment and a storage medium. The method comprises the steps: collecting a rope skipping video image according to a preset image collection period, extracting a key point coordinate of a target key point from the rope skipping video image, and storing the key point coordinate into a key point coordinate set, wherein the abscissa of the key point coordinates is the acquisition time of the rope skipping video image, and the ordinate is the longitudinal height value of the target key point in the rope skipping video image; in response to the fact that a preset fitting condition is met, adopting key point coordinates in the key point coordinate set for fitting to generate a parabola to obtain target parameters of the parabola; and according to the value of the target parameter, determining the adding state of the jump count, and according to the adding state, updating the value of the jump count, wherein the adding state comprises a count increasing state and a count invariant state. In addition, the invention also relates to a block chain technology.

The invention discloses a hint operation method and a device; the hint operation method includes that the hint operation request is received; the operation request carries the operation label for the hint and the hint information related to the operation; the operation for the hint is executed according to the information carried in the operation request; according to the embodiment of the invention, the hint of the embodiment of the hint operation method and the device exists independent of the practical content; thereby, the hint file can be operated according to the user requirement so that the user experience is improved.

The invention discloses a rope skipping counting method based on an ultrahigh frequency RFID. The method comprises the steps of carrying out the denoising of an RSSI signal W0 in an extracted wireless radio frequency signal, and forming an RSSI signal sequence W1; determining a search length L0 and a search step S of a search interval based on the limit rope skipping speed, searching a valley-peak value in the RSSI signal sequence W1, and judging whether an effective rope skipping behavior exists based on the searched valley-peak value; if the judgment result is that an effective rope skipping behavior exists, putting the valley value and the peak value of the effective rope skipping behavior into a valley value data set and a peak value data set respectively, meanwhile, adjusting the search length L1 of the search interval based on the actual rope skipping speed, continuing to search all the valley values and the peak values of the RSSI signal sequence W1, and putting the valley values and the peak values into the valley value data set and the peak value data set respectively till the rope skipping behavior is finished; and calculating the rope skipping number of the user based on valley values and peak values in the valley value data set and the peak value data set. Rope skipping counting is achieved based on radio frequency signals, and the rope skipping number of the user to be tested can be accurately calculated in the environment with weak light and noisy sound.

The invention provides a rope skipping test system and method based on a computer vision technology, and belongs to the technical field of computer vision. The display screen is connected with the computer; the fingerprint identifier is connected with the computer; the radio frequency card reader is connected with the computer; the contact card reader is connected with the computer; the electric holder is connected with the computer; the camera is connected with the computer and is arranged on the electric holder; the voice module is connected with the computer; and the server is connected with the computer. The rope skipping counting device has the advantage that the rope skipping counting accuracy and efficiency are greatly improved.

The invention relates to the field of virtual imaging, and discloses a rope implementation method, device and equipment based on UE4 and a storage medium. The method comprises the following steps: performing node processing on a virtual rope in a UE4 environment to obtain N rope nodes; according to a preset rope node algorithm, a node constraint relationship among the N rope nodes is calculated, and the node constraint relationship comprises a first constraint relationship of the adjacent rope nodes, a rotation angle constraint relationship of the rope nodes and a second constraint relationship of the interval rope nodes; display constraint calculation processing is carried out according to the first constraint relation, the rotation angle constraint relation and the second constraint relation, and N display nodes corresponding to the N rope nodes respectively are obtained; According to the N display nodes, updating rope nodes in the virtual rope, and generating a constrained virtual rope. Compared with the prior art, stable display of rope simulation in a virtual environment can be achieved, shaking is avoided, and the hardness of the rope can be freely adjusted.

An information presentation system includes: an overload preventing device that derives a load factor which is an index of a load applied to a rope; a data logger that accumulates data on the load factor derived by the overload preventing device and data on a time length for which a load corresponding to the derived load factor has been applied to the rope, the data on the load factor and the data on the time length being associated with one another, and generates lifting rope statistical information and raising rope statistical information indicating a relationship between the load factor and the cumulative time for each rope; and a presenting unit that presents the lifting rope statistical information and the raising rope statistical information generated by the data logger.

The invention provides a multi-terminal interactive system and method based on a rope skipping handle. The handle end is used as the core of the network, and the mobile terminal is connected by installing a Bluetooth module, and the player is connected by installing a 433 radio frequency module. When jumping rope, you can leave the mobile terminal and interact in real time through the player, avoiding the traditional one-to-one connection method of the handle. When you need to replace the connection device of the handle, you need to manually disconnect and reconnect, which improves the user experience. .

The invention belongs to the technical field of robot control, and discloses a method for processing motion data of a rope-driven serpentine manipulator with a gap between rope holes. Then use the Chebyshev polynomial to fit the gap coefficient; then use the gap coefficient to solve the theoretical rope length from the actual length of the rope, and solve the joint motion state from the theoretical rope length, and solve the workspace state from the joint space. Solve the forward kinematics; then solve the joint state from the workspace state, and calculate the theoretical rope length from the joint angle, and use the gap coefficient to calculate the actual rope length to solve the inverse kinematics. The method of the present invention is simple in operation, and can improve the control accuracy of the rope-driven serpentine arm with the gap between the rope holes. Compared with the traditional method that does not consider the gap between the rope holes, the method of the present invention can effectively improve the control accuracy of the rope-driven serpentine arm with the gap between the rope holes. The control accuracy is 20%.

The present invention relates to systems and methods for remote monitoring of drilling equipment and in particular discloses systems and methods for capturing information related to the performance of mining machines and making this information available to remote maintenance personnel. This information can be used to generate alerts, determine machine status, determine performance statistics for the machine, and identify issues with the machine that may require attention. This information can be provided in status messages, and the data can be packaged as XML data or in string format. The data associated with the message may be specific to the current state or environment of the mining machine. That is, in the case of a rope excavator, different data may be included in the message generated in the swing state and in the message generated in the stowed state. In some cases, the message is generated when a progress threshold is met, such as a progress threshold for each foot of drilling performed by the mining rig.

The invention discloses an intelligent rope skipping counting method and belongs to the technical field of intelligent body-building equipment. The intelligent rope skipping counting method comprisesthe following steps; 1) obtaining video data of rope skipping actions and extracting audio data and image data from the video data; 2) extracting a sampling frequency of audio from the audio data, drawing an audio waveform graph with time as a horizontal ordinate, and determining a period T1 of one rope skipping action according to the audio waveform graph; 3) carrying out single frame processingon the image data to obtain one group of single frame images arranged in sequence; 4) determining a reference area of the single frame images and cutting out the reference area to obtain a reference image; 5) carrying out binarization processing and edge tracking on the reference image, separating out a target, and judging whether the target is rope skipping or not; 6) judging whether a time interval between adjacent reference images when the target is rope skipping is less than T1 or not, and if so, regarding as a repeat count and not increasing the count; and otherwise, increasing once count; and 7) outputting and displaying a counting result.

The invention provides a rope missile working authority setting method and system. The method comprises the steps: obtaining an unlocking secret key based on a pre-stored serial number of a micro-control unit carried by a rope missile, and obtaining a ciphertext based on a predetermined encryption algorithm, a preset password table, and the serial number; and determining the working authority of the rope missile based on the comparison result of the ciphertext and the unlocking secret key. The method is applied to the rope projectile assembly, the overall function of inquiring the unlocking secret key according to the serial number can be achieved, and the use requirement during design is completely met. Because the authority setting method provided by the invention is relatively simple, the authority setting method has very outstanding performance in the aspects of use safety and production efficiency.

The invention relates to the technical field of network equipment, and discloses a device for automatically enlarging the placement size when an optical disk is placed in a computer, and the device comprises a housing, the left end of the housing is movably connected with an outer wall, the right end of the outer wall is movably connected with a gear, the right end of the gear is movably connected with a push rod, and the right end of the push rod is movably connected with a moving rod. A connecting rod is movably connected to the lower end of the moving rod, a guide column is movably connected to the lower end of the connecting rod, a compression spring is movably connected to the lower end of the guide column, an anti-resistance mechanism is movably connected to the lower end of the guide column, a rope belt is fixedly connected to the lower end of the guide column, and an ejector rod is fixedly connected to the right end of the rope belt. When the ejector rod moves downwards, a downward pulling force is applied to the limiting block, so that the limiting block moves downwards, the range of the disc surrounded by the limiting block is expanded, and the effect of automatically expanding the range of the placing disc when the optical disc needs to be placed and read is achieved.

The invention provides a flexible rope modeling method based on a linear interpolation shape function, and the method considers two aspects of calculation time and calculation precision. The method overcomes the defects that in the prior art, a concentrated mass method is fastest in calculation speed but low in precision, and a nonlinear finite element method based on absolute node coordinates is long in calculation time, but high in precision and the like, and a nonlinear rope unit adopting two nodes is moderate in calculation time and high in calculation precision, the method has the characteristics of calculation time economy and high precision, can meet engineering application requirements, and is a relatively reasonable choice for flexible interception net rope modeling.

The invention relates to a method and system for generating an image entity contour one-stroke path, and the method comprises the steps: arranging a circle of rope points along the boundary of an image to form a contour rope, and determining the advancing direction of each rope point as the opposite direction of the upper, lower, left or right boundary where the rope point is located; advancing each rope point according to the advancing direction, and changing the contour ropes into rectangles tightly wrapping the outer contours of the entities according to whether any row or column contains the entity points or not; sequentially advancing each rope point of the image boundary according to the advancing direction until the rope points meet the entity points, wherein the obtained contour rope is an image entity contour one-stroke path; creating a self-closed cross-free virtual rope sleeve which can be infinitely and freely expanded and contracted, and sleeving the virtual rope sleeve onthe outer rectangle of the whole portrait; wherein the contour generation process is completely processed by a computer, manual intervention is not needed, the efficiency is high, and the speed is high; the algorithm is simple, the robustness is good, the reliability is high, and errors are not likely to happen; various complex image conditions are well adapted, the fine degree is controllable, and the method is particularly suitable for typesetting area calculation.

The invention discloses a robust depth map structure reconstruction and denoising method based on a guided filter, which detects structural error areas and detects places where the input depth map has a large difference between the guided filtering of the large window and the guided filtering of the small window , since the guided filtering under a large window can have a feathering effect, while the guided filtering of a small window only plays a smoothing role, so the area with a large difference can be considered as a structural error area, marked as a potential structural error area, and then based on iterative reweighting The least squares algorithm constructs the weights. After the weights are constructed, the overall solution is performed and the depth map is updated. According to the results, it is judged whether the set number of iterations is reached. If it is reached, the depth map is output to end the calculation. Otherwise, the structural error area is detected again. The invention can suppress strong noise, repair structural error areas of the depth map and the color map, improve the consistency of the depth map and the color map, restore the correct depth map boundary, and have important guiding significance for improving the quality of the synthetic view.

The invention relates to a control method and device for connecting two ends of a rope with an interactive object in a UE4 engine, computer equipment and a storage medium, and the method comprises the steps: creating a first object inheriting the interactive object in the UE4 engine, creating a first scene assembly in the first object, creating a rope assembly in the first scene assembly, generating a second object in a BeginPlay event of the first object, creating a second scene assembly and an arrow assembly in a second object, and subtracting the rope length of the rope assembly from the first position of the first object to obtain a second position of the second object; and determining that the second object is in a suspended state and a grabbed state, and controlling the first object, the rope assembly, the second object and the arrow assembly according to the suspended state and the grabbed state, so that the use of the rope assembly can meet simulation VR application development. According to the method, the simulation effect that interactive objects are arranged at the two ends of the rope assembly can be simulated.

The invention relates to a path planning method for a super-redundant mechanical arm. Step 1: establish a kinematic model for the super-redundant mechanical arm, and determine the conversion relationship between rope length, declination and coordinates; step 2: establish an obstacle model, Determine the inaccessible area corresponding to the obstacle; Step 3: On the basis of Step 1, through the law of sine and two extreme points, theoretically analyze the maximum angle Ψ between two adjacent straight line paths max The maximum value ψ of the change in the deflection angle of the boom during the movement of the end point of the ith boom along one of the straight paths max , arm length L i , the path step size l w Step 4: According to the unreachable area determined in Step 2 and the constraint relationship in Step 3, an improved RRT algorithm is proposed for path planning. The feasibility and optimization of the present invention are better than those of traditional algorithms.

The present application discloses an animation playback method, device, device and storage medium based on a virtual environment, and relates to the field of virtual environments. The method includes: receiving a rope release signal; obtaining a grid model of the virtual rope and animation parameters corresponding to the grid model according to the rope release signal, the grid model is used to determine the rope outline of the virtual rope, and the animation parameters are used for the virtual rope. The rope shape is determined; the animation effect corresponding to the animation parameters is rendered frame by frame in combination with the mesh model, and the rope animation is played in the virtual environment. By acquiring the mesh model and animation parameters of the virtual rope, and rendering the animation effects corresponding to the animation parameters frame by frame, the virtual rope can be displayed in the form of a three-dimensional virtual object in the virtual environment, which improves the performance of the virtual rope in the virtual environment. The authenticity of the virtual rope and the three-dimensional virtual environment are improved.

The invention provides an interaction method and device based on a color rope, a medium and electronic equipment. The interaction method comprises the following steps that: a connecting rope result information set submitted by any member terminal in each group within the interaction time of each group is received, wherein the rope connecting result information set is used for storing connecting rope connection information associated with a fixed node and determined by the member terminal based on a preset prompt graph of the corresponding group; based on the connecting rope result informationset, a preset rope connecting rope scoring rule and a preset fixed node information set, scoring results of the corresponding groups are calculated, wherein the fixed node information set is used forstoring information of the fixed nodes which can be connected with a plurality of connecting ropes in the corresponding groups. According to the interaction method based on the color rope, the submitted connecting rope result information set is automatically scored through the connecting rope result information set, the preset connecting rope scoring rule and the preset fixed node information set;the error rate of manual scoring is reduced, the scoring accuracy is improved, the training progress is accelerated, and the training quality is improved.