33 results about "Distance parameter" patented technology

The invention provides a buoy ship collision early warning method based on artificial intelligence, a medium and a system, and belongs to the technical field of buoy ship collision early warning. A ship trajectory prediction model is utilized to dynamically adjust neuron time constant parameters through an adaptive adjustment function to output a ship future position prediction sequence, and the prediction sequence is input into a greedy snake path verification algorithm to carry out gridding processing and continuity inspection to delete abnormal path segments. Based on the verified prediction sequence, calculating a collision probability value comprehensively considering a distance parameter relative speed parameter course angle difference value and a sea condition complexity coefficient, determining a collision risk level according to the collision probability value and a preset threshold value, and calculating estimated collision time; and the collision early warning information including the risk level estimation time and the emergency degree is output, so that the technical problems of low accuracy and poor timeliness of collision early warning of ships in a sea area are solved.

The invention discloses a control method and equipment of a glue spraying system and a storage medium, and relates to the technical field of automatic spraying, the method comprises the following steps: obtaining a distance parameter from a nozzle to the surface of a workpiece at the cut-off position of the nth time step and spraying area image data of the nth time step, and generating a workpiece curvature feature and a spraying state feature; the spraying state characteristics, the workpiece curvature characteristics and the material type of the area corresponding to the (n + 1) th time step are substituted into a compensation algorithm, and difference parameter values are generated; and generating and executing a target control parameter of the (n + 1) th time step according to the difference parameter value and the initial control parameter. According to the method, the change of the surface of the workpiece is monitored in real time, the spraying parameters are automatically adjusted according to the change, the technical problem that the thickness of a coating is not uniform is solved, and the spraying quality and efficiency are improved.

The embodiment of the invention provides a method for determining a distance parameter, a device for determining the distance parameter, electronic equipment and a non-volatile computer readable storage medium. The method comprises the steps that a first set and a second set are obtained, the first set comprises at least one first geometric object, the second set comprises at least one second geometric object, and the first geometric object and the second geometric object are compact and convex; iteratively updating the first set or the second set; and determining a distance parameter of the first set relative to the second set based on the updated first set and the updated second set. According to the embodiment of the invention, the minimum distance and the nearest point pair between two sets comprising a plurality of geometric objects can be efficiently calculated, so that collision detection and distance parameter determination can be efficiently carried out, and the requirements of collision detection and distance testing in a complex scene are met.

The application discloses an improved path planning method based on adaptive parameters, comprising the following steps: S1, initial path planning is carried out through a DWA algorithm; S2, on the basis of the initial path, the weight of the evaluation function parameter is designed for different obstacle types and a steering strategy is prepared, S2-1, when the intelligent agent is passing through between dense obstacles, the influence of the course item on the trajectory of the initial path is reduced by designing an adaptive rate, S2-2, when facing narrow gap obstacles, the weight of the distance parameter in the evaluation function is reduced; S2-3, when facing trap obstacles, a steering strategy is formulated in the DWA algorithm; S3, the moving obstacles in the dynamic environment are predicted to avoid obstacles. Through the method, the intelligent agent can plan a real-time path in a complex environment containing a large number of static and dynamic obstacles, path constraints and performance constraints, and the intelligent agent can avoid the dynamic obstacles in advance, reducing the hidden danger of side collision.

The present application provides a focusing method and apparatus for a projector, an electronic device, and a storage medium. The method comprises: obtaining a distance parameter set from a target projector to a screen; on the basis of the distance parameter set, calculating to obtain a first adjustment value of a distance adjustment factor and a second adjustment value of an angle adjustment factor; by adopting a target calibration algorithm, calculating a focusing step size of an optical machine corresponding to the first adjustment value and the second adjustment value, the target calibration algorithm being used for calibrating the relationship between the distance adjustment factor, the angle adjustment factor, and the focusing step size; and performing focusing by adjusting the optical machine of the target projector to the focusing step size. By adopting the present implementation, the relationship between a distance adjustment factor, an angle adjustment factor, and a focusing step size of an optical machine is calibrated by adopting a preset calibration algorithm, so that focusing can be implemented in any implementation scenario for a ToF-based projector.

The invention relates to the technical field of underwater target tracking, in particular to a target orientation-based motion element estimation method and device and a storage medium. The motion element estimation method comprises the following steps: observing a to-be-measured target, and obtaining measurement data of the to-be-measured target; resolving the measurement data by adopting an analytic mathematical model to obtain an initial distance parameter of the to-be-measured target; and correcting the azimuth information and the initial distance parameter in the measurement data based on a filtering algorithm to obtain an optimal prediction result of the to-be-measured target. The relative calibration initial value is defined for the target orientation of the to-be-measured target by using the analytical method, and then the initial value is iteratively corrected by using the filtering method, so that on one hand, the disadvantage that the actual situation cannot be considered by the analytical method is avoided, and on the other hand, the dependence of the filtering method on the initial value is made up; and more accurate state estimation can be obtained.

The application discloses a brake drum roundness detection method, system and detection device. First, basic detection parameters are collected and a three-dimensional polar coordinate system is constructed, then detection distance parameters of each detection point on the brake drum to be detected are obtained, and polar coordinate sets of each detection point are calculated according to the basic detection parameters and the detection distance parameters, then an actual outer circular surface model of the brake drum to be detected is generated according to the polar coordinate sets, finally, a standard outer circular surface model and the actual outer circular surface model are compared to determine whether the brake drum to be detected is qualified. The application can simultaneously perform multi-point synchronous detection on the brake drum to be detected in the height direction, is more efficient, simultaneously realizes 360-degree dead angle-free measurement on the brake drum to be detected, forms a plurality of sampling points arranged once in the axial direction, and thus the entire outer peripheral surface of the brake drum to be detected is covered, that is, the height of the detection device does not need to be adjusted in a detection period, and the detection efficiency is further improved.

The invention provides a method and a device for generating a safety buffer area for movement of a lunar rover. The method comprises the following steps: adaptively generating a first expansion coefficient according to self-configuration parameters of the lunar rover; establishing a mapping relation between the moving distance parameter and the position deviation; repositioning information is introduced to serve as a spatial discretization reference, the moving distance parameter is reconstructed, a second expansion coefficient is obtained based on the reconstructed moving distance parameter and the mapping relation, and the second expansion coefficient is the corrected position deviation; combining the first expansion coefficient and the second expansion coefficient as a third expansion coefficient; and carrying out geometric expansion on the original obstacle based on the third expansion coefficient, and generating a safety buffer area facing the movement of the lunar rover. According to the method, the boundary of the safety buffer area can be automatically refreshed along with the change of the lunar rover configuration, the contradiction between the infinite amplification of the expansion radius and the loss of path connectivity in large-scale exploration is solved through the periodic reset function, and the nonlinear balance between the safety margin and the accessibility is established.

Embodiments of the present application disclose a motion route determination method and device, computer equipment, a medium and a program product. A space grid corresponding to a preset space is obtained, each sub-grid is configured with a speed parameter, a lateral distance parameter and a longitudinal distance parameter, so that the preset space belonging to a three-dimensional space is projected into two two-dimensional planes, and the complexity of route searching is reduced. For each iteration, instead of calculating with all unvisited nodes, only part of the nodes (i.e. adjacent sub-grids) are calculated, that is, the cumulative motion duration or motion duration corresponding to a plurality of sub-grids in the space grid is calculated, and then a motion route is obtained. The motion route is used to control the motion equipment to move from a starting grid corresponding to a sub-space to an ending grid corresponding to a sub-space in the preset space. The amount of calculation caused by each search process is reduced, and then the amount of calculation of route searching in the three-dimensional space is reduced, and the route searching efficiency is improved.

The application provides a safety buffer generation method and device for lunar rover movement, and the method comprises the following steps: adaptively generating a first inflation coefficient according to the configuration parameters of the lunar rover; establishing a mapping relationship between the movement distance parameters and the position deviation; introducing repositioning information as a spatial discretization reference to reconstruct the movement distance parameters, obtaining a second inflation coefficient based on the reconstructed movement distance parameters and the mapping relationship, and the second inflation coefficient is a corrected position deviation; combining the first inflation coefficient and the second inflation coefficient as a third inflation coefficient; performing geometric expansion on the original obstacles based on the third inflation coefficient to generate a safety buffer for the movement of the lunar rover. The application can automatically refresh the safety buffer boundary with the change of the configuration of the lunar rover, and also solves the contradiction between the infinite expansion of the inflation radius and the loss of path connectivity in large-scale exploration through a periodic reset function, and establishes a nonlinear balance between the safety margin and the accessibility.

The present application belongs to the terminal ballistic test technical field, especially relates to a kind of near equivalent long-range shooting test target speed determination method of shooting, comprising the following steps: S1: the ballistic parameter and distance parameter of test projectile body are acquired, and initial parameter set is generated;S2: attenuation distance is calculated based on initial parameter set, reference ballistic function value is obtained by inquiring ballistic function table, and intermediate parameter set is generated;S3: velocity attenuation characteristic quantity is calculated based on intermediate parameter set, reference ballistic function value is operated with velocity attenuation characteristic quantity, and equivalent ballistic function value is generated;S4: equivalent ballistic function value is inquired based on ballistic function table, and the test projectile velocity of near shooting is determined.The method realizes the accurate determination of the test target speed of near shooting equivalent long-range shooting, and has the advantages of convenient operation, wide applicability, low cost and strong practicability.

The invention provides a performance evaluation method and device of a to-be-tested sensing algorithm, vehicle equipment and a computer program product. The performance evaluation method comprises the steps of determining a plurality of distance parameters of a vehicle device and a target object corresponding to a plurality of acquisition moments based on a to-be-tested sensing algorithm, and determining a maximum distance parameter in the plurality of distance parameters as a first farthest identification distance corresponding to the target object; classifying the first farthest identification distance based on the category information of the target object to obtain one or more identification distance clustering results; determining a first farthest identification distance meeting a performance limitation condition in the first clustering result as a second farthest identification distance; determining a performance index of the to-be-tested sensing algorithm corresponding to the first clustering result based on the second farthest recognition distance; and performing performance evaluation on the to-be-tested sensing algorithm corresponding to the performance indexes of the one or more recognition distance clustering results to obtain an evaluation result.

The invention provides a track navigation tracking method for a single-steering-wheel high-position forklift. The track navigation tracking method comprises the following steps: firstly, acquiring basic parameters and detection parameters respectively; then the forklift deflection angle is obtained based on the basic parameters and the detection parameters; then distance parameters are obtained through the forklift deflection angle, the basic parameters and the detection parameters; and finally, adjusting the angle based on a PD control strategy, the invention provides the magnetic track navigation tracking method for the single-steering-wheel high-position forklift, according to the method, the head and the tail of the forklift are respectively provided with a magnetic sensor, the pose of the forklift body is calculated according to the two pieces of information, and the angle of the forklift is controlled by using the PD strategy according to the pose, so that the stable operation of the forklift is realized. The method is especially suitable for accurate positioning and navigation of scenes with changeable environmental characteristics, such as implantable goods shelves.

The invention discloses a personnel space-time aggregation analysis method and system based on large-scale position data, and the method comprises the following steps: S1, obtaining the movement data of a mobile device, setting a distance parameter and a duration parameter, setting a starting point, and setting a time interval; comparing the interval between the time data and the adjacent position data with the size of the duration parameter, comparing the interval between the position data and the starting point position data with the size of the distance parameter, and calculating a corresponding geographic space position center point to obtain a mobile equipment landing address set; s2, repeating the step S1 for all the mobile devices to obtain a set of landing addresses of all the mobile devices to form a set of landing addresses; and S3, setting an aggregation parameter and an aggregation distance, and screening the foot address set based on the aggregation parameter and the aggregation distance to obtain a space-time aggregation set of all foot addresses.

An embodiment of the present invention discloses a detection device and a detection method for a motion mechanism; the detection device includes a test fixture and a distance detection component. The test fixture includes a substrate and a test piece located on the substrate. The test piece includes a test surface that is inclined with respect to the substrate. The distance detection component is disposed at at least one moving end of the motion mechanism and is used to detect the distance parameter between the moving end and the test surface. The signal emitted by the distance detection component is disposed non-perpendicularly to the test surface. In the present invention, through the distance detection component and the inclined test surface, the distance detection component at the moving end of the motion mechanism moves along the test surface with a predetermined parameter to obtain the distance parameter, and the moving positioning accuracy of the motion mechanism is determined according to the distance parameter. If the distance parameter deviation is large, the moving positioning accuracy is low; if the distance parameter deviation is small, the moving positioning accuracy is high. This facilitates the daily inspection of the motion mechanism, is conducive to improving the inspection efficiency, and reducing the inspection cost.

In some implementations, a device may receive, from a data stream, a set of data points arranged in a dimensional data space. The device may compare the set of data points to identify one or more clusters using values of a distance parameter for data points included in the set of data points, wherein the values of distance parameter includes different values of the distance parameter for different data points. The device may transmit an indication of the one or more clusters to cause a device to display information associated with the one or more clusters. The device may receive, from the device, feedback information associated with at least one data point, wherein the feedback information indicates that at least one data point is associated with an error. The device may modify a value of the distance parameter associated with the at least one data point to a modified value.

In some implementations, a device may receive, from a data stream, a set of data points arranged in a dimensional data space. The device may compare the set of data points to identify one or more clusters using values of a distance parameter for data points included in the set of data points, wherein the values of distance parameter includes different values of the distance parameter for different data points. The device may transmit an indication of the one or more clusters to cause a device to display information associated with the one or more clusters. The device may receive, from the device, feedback information associated with at least one data point, wherein the feedback information indicates that at least one data point is associated with an error. The device may modify a value of the distance parameter associated with the at least one data point to a modified value.

The application provides a hook arm control method and device, electronic equipment and storage medium, and relates to the technical field of vehicle engineering technology, and comprises the following steps: determining the angle deviation between the hook arm equipment and the target box according to the distance parameter between the hook arm equipment and the target box; determining the height adjustment strategy for the hook arm equipment according to the angle deviation; and adjusting the height of the hook arm equipment according to the height adjustment strategy, so that the front hook arm of the adjusted hook arm equipment hooks the box hook ring of the target box. In this way, the height of the hook arm equipment is adjusted according to the height adjustment strategy, so that the front hook arm of the adjusted hook arm equipment hooks the box hook ring of the target box. The operation difficulty of the hook arm equipment is reduced, and the working efficiency of the hook arm equipment is improved.

The application provides a target visibility measurement method and device, and relates to the field of target measurement. The method comprises the following steps: performing segmentation processing on a target image according to material quality to obtain a plurality of segmented regions of different material quality; obtaining a first relationship between transmittance and visibility of segmented regions of the same material quality at different distances and a second relationship between transmittance and visibility of segmented regions of different material quality at the same distance; generating a transmittance and visibility relationship library based on the first relationship and the second relationship; obtaining attribute information of a target region, wherein the attribute information comprises transmittance corresponding to the material quality of the target region; obtaining distance information of the target region, wherein the distance information is a distance parameter of the target region from an observation point; obtaining a transmittance and visibility relationship corresponding to the target region from the transmittance and visibility relationship library based on the attribute information and the distance information; and calculating a visibility value of the target region according to the transmittance and visibility relationship.

The invention provides a material taking head in-out warehouse control method, device and equipment and a storage medium, and the method comprises the steps: obtaining a real-time distance parameter between a material taking head and an obstacle region, determining a current in-out warehouse risk level according to the real-time distance parameter and risk level division threshold information, and matching a target anti-collision execution strategy based on the current in-out warehouse risk level. An anti-collision control instruction is generated according to the target anti-collision execution strategy, so that the ship unloader controls the taking head to enter and exit from the warehouse according to the anti-collision control instruction; according to the method, the position of the material taking head can be accurately determined by acquiring the real-time distance parameter between the material taking head and the obstacle area, the current warehouse entering and exiting risk level is determined according to the real-time distance parameter and the risk level division threshold information instead of purely relying on artificial experience, the risk can be judged in advance when the material taking head approaches the obstacle, and the risk judgment accuracy is improved. According to the method, pre-collision early warning is achieved, different control measures are taken at different risk levels instead of shutdown adjustment, and the loading and unloading efficiency can be improved while safety is guaranteed.

The embodiments of the present application disclose a method, device and system for detecting the accuracy of a parking space detection system; the method comprises: obtaining a control value of the parking space parameter; determining the absolute value of the difference between the test value of the parking space parameter and the control value as an error; wherein the test value of the parking space parameter is obtained by the parking space detection system; determining a distance parameter between a vehicle and a parking space corresponding to the parking space parameter; using the distance parameter as an independent variable, determining a value of a function as a coefficient of the parking space parameter; wherein the value of the function is greater than zero, the derivative of the function is greater than zero and the derivative of the function is monotonically decreasing; determining the accuracy of the parking space detection system according to the product of the error and the coefficient; and obtaining the accuracy of the parking space detection system with higher accuracy.

The invention relates to a brake device with at least one first brake component (10a-c) and at least one second brake component (12a-c), which are provided to cooperate to provide a braking torque and are arranged contactlessly and movably relative to each other in an unactuated state, and with a sensor unit (14a-c), which is provided to determine a distance parameter between the first brake component (10a-c) and the second brake component (12a-c). It is proposed that the sensor unit (14a-c) is designed to determine the distance parameter independently of brake actuation and comprises at least one non-contact measuring sensor element (16a-c) arranged on and / or integrated into the first brake component (10a-c) and evaluation electronics (18a-c) that interact with the sensor element (16a-c).

The invention relates to the technical field of intelligent control, and discloses a transverse cutting control method and device for a cutting machine, and the method comprises the steps: obtaining a first distance parameter of a green brick to be cut, and obtaining a second distance parameter between a first transverse cutting tool and a second transverse cutting tool; determining an initial position parameter and an initial cutting parameter corresponding to the cutting machine based on the first distance parameter and the second distance parameter so as to generate a target cutting parameter of the cutting machine; according to the initial position parameters and the initial cutting parameters, cutting reset parameters of the cutting machine are determined, and cutting control parameters of the cutting machine are generated in combination with the target cutting parameters; and according to the cutting control parameters, a target cutting tool corresponding to the cutting machine is determined, and the target cutting tool is controlled to execute matched cutting control operation. Therefore, the flexibility, accuracy and reliability of green brick cutting can be improved, the intelligence and efficiency of green brick cutting can be improved, and then the intelligence and efficiency of green brick production can be improved.

The invention discloses a train control method and a train debugging system, and relates to the technical field of train control. Through receiving and sending of the radar device, the distance parameter between the tractor and the ground equipment is measured. And in the off state, the controller performs traction removal treatment on the train. And determining the spatial position and the motion state of the tractor based on the relationship between the first distance parameter and the preset distance parameter between the tractor and the ground radar equipment and the relationship between the first speed parameter and the preset speed parameter in order to determine whether the tractor is located in a safe area. According to the method and the system, the collision risk of the tractor and the train can be known according to the traction state and the stopping and moving states of the tractor, namely, the traction state mechanism of the train and whether traction removal or traction input is performed or not are determined, so that the safety of no collision between the train and the tractor is guaranteed. The method is incorporated into a safety prevention and control system to further avoid the risk of collision between the train and the tractor so as to ensure the reliability of test safety.

The embodiment of the invention provides a path planning method and device, a robot, a medium and a product, and the method comprises the steps: carrying out the expansion of an obstacle in a work space map according to a full-coverage distance parameter of the robot, determining an initial path of the robot, and enabling the full-coverage distance parameter to be associated with a geometric model of the robot; determining a nearest obstacle of each pose in the initial path; and according to the nearest obstacle of each pose and the geometric model of the robot, optimizing the orientation angle in at least part of poses in the initial path. According to the method, the geometric shape of the robot is analyzed, expansion is carried out according to the radius of the inscribed circle, the robot can cover more narrow areas, and the coverage rate of the path is ensured; and then in combination with the geometric model of the robot, analyzing the relative position relationship with the obstacle, optimizing the orientation angle of the robot, ensuring that the robot does not collide with the environment, and further improving the safety of the robot.

The present invention discloses a method for automatic hovering of a vessel, including: obtaining the yaw axis angle information of the vessel, obtaining a distance parameter according to the vessel's GPS position information and the position information of the hovering target point, and correcting the error of the obtained yaw axis angle information according to the vessel's GPS position information to obtain a yaw axis angle parameter; calculating a steering throttle control parameter according to the yaw axis angle parameter, and calculating a forward throttle control parameter according to the distance parameter; controlling the steering of the vessel according to the steering throttle control parameter so that the bow of the vessel is directly facing the hovering target point, and controlling the output of the forward throttle of the vessel according to the forward throttle control parameter to approach the hovering target point; performing a hovering operation after approaching the hovering target point, and maintaining the steering throttle control parameter and the forward throttle control parameter at that moment. At the same time, a system for automatic hovering of a vessel is also disclosed.

According to the bearing platform seismic oscillation water additional mass calculation method, device and equipment and the storage medium, calculation is directly carried out on circular and rectangular bearing platforms based on structural parameters of the bearing platforms and distance parameters from the bottoms of the bearing platforms to the water surface, calculation is simple and convenient, and the result is reliable; for a rounded rectangular bearing platform and a chamfered rectangular bearing platform, firstly, the bearing platform is regarded as a rectangular bearing platform to calculate the added mass of the seismic flowing water, and then a shape coefficient equation is introduced for correction to consider the influence of a rounded corner or a chamfer on the added mass of the seismic flowing water, so that the complexity of numerical simulation of a complex section structure is avoided, and the calculation accuracy is improved. Compared with a numerical simulation method, the scheme does not need tedious steps such as modeling and calculation, so that the calculation time is greatly shortened, and the calculation efficiency is improved; compared with a test method, the scheme does not need to invest a large amount of manpower and funds for testing, so that the cost is remarkably reduced; compared with theoretical derivation, the scheme is suitable for various bearing platform shapes including a circle, a rectangle, a rounded rectangle and a chamfered rectangle.

The application provides a zero position direction calibration method, system, computer and readable storage medium, which comprises the following steps: obtaining a first slant distance parameter and a first horizontal angle parameter between a total station and a prism at a first preset position of a track; obtaining a second slant distance parameter and a second horizontal angle parameter between the total station and the prism at a second preset position of the track; obtaining a zero position horizontal direction angle parameter according to the first slant distance parameter, the second slant distance parameter, the first horizontal angle parameter and the second horizontal angle parameter, and adjusting the zero position direction of the total station based on the zero position horizontal direction angle parameter. The horizontal angle parameter and the slant distance parameter of the total station at the first preset position and the second preset position are measured respectively, the deviation angle between the zero position horizontal direction and the original measurement direction of the total station is obtained through the horizontal angle parameter and the slant distance parameter, and the total station is corrected based on the deviation angle, so that the zero position direction is quickly and accurately set.

The invention provides a focusing method and device of a projector, electronic equipment and a storage medium. The method comprises the steps that a distance parameter set from a target projector to a screen is acquired; calculating according to the distance parameter group to obtain a first adjustment value of a distance adjustment factor and a second adjustment value of an angle adjustment factor; a target calibration algorithm is adopted to calculate the focusing step length of the optical machine corresponding to the first adjustment value and the second adjustment value, wherein the target calibration algorithm is used for calibrating the relation among the distance adjustment factor, the angle adjustment factor and the focusing step length; and focusing by adjusting an optical machine of the target projector to the focusing step length. By adopting the implementation mode, the preset calibration algorithm is adopted to calibrate the relationship among the distance adjustment factor, the angle adjustment factor and the focusing step length of the ray machine, so that focusing can be realized in any implementation scene for a projector based on Tof.

The application discloses a sensor error determination method, a production system, a program product and a storage medium. The method is based on a preset calibration data set to construct a mapping relationship between a walking distance and a walking time. The calibration data set includes time parameters and distance parameters. The time parameters include timestamp data of at least two marking points on a calibration sample when the at least two marking points pass through at least one calibration station. The distance parameters include physical distance data between the at least two marking points. Based on the timestamp data and the mapping relationship, the calculated distance parameters of the calibration sample when passing through the at least one calibration station are calculated. The calculated distance parameters and read distance parameters are fitted to determine error parameters of the sensor. The read distance parameters include walking readings collected by the sensor when the at least two marking points pass through the at least one calibration station. The calibration and calibration of the sensor error can be realized without stopping and disassembling the equipment, and the calibration process is greatly simplified, and the production interruption and material loss are reduced.