1781 results about "Fixed position" patented technology

The invention provides an MEMS acceleration sensor null drift determination method and device and a terminal, and relates to the technical field of MEMS acceleration sensors. According to the invention, the first accelerometer and the second accelerometer which are relatively fixed in position and different in measuring range are arranged and synchronously move in the use process, and the real-time zero-offset drift distance of the wide-range accelerometer is determined based on the difference between the monitoring values of the small-range accelerometer and the wide-range accelerometer by utilizing the accuracy of the small-range accelerometer. Therefore, the wide-range accelerometer can be corrected in real time by using the zero-offset drift amount, and the accuracy of the measured value of the acceleration sensor is improved in a relatively wide range. In addition, the two accelerometers move synchronously in the using process, the two accelerometers are the same in environment and inclination angle, the zero offset drift distance of the large-range accelerometer is determined based on the monitoring value of the small-range accelerometer, the influence of environment vibration can be avoided, the influence of gravity components of the inclination angles of the accelerometers can also be avoided, and the accuracy of determining the zero offset drift distance is improved.

The invention provides a full-closed-loop control method and system for a multi-station servo feeding manipulator, and the method comprises the steps: firstly, detecting the thickness of a plate in real time, querying a preset thickness-pressure relation, and determining a target pressure value when the multi-station servo feeding manipulator carries out the grabbing of the plate; a real-time pressure value is then generated through a dynamic pressure regulation mechanism. And the system compares the real-time pressure with the target pressure to obtain a deviation value, dynamically adjusts proportional, integral and differential parameters in combination with a fuzzy rule base, and calculates and generates a dynamic pressure compensation amount by using the adjusted parameters. And the compensation amount and the target pressure are superposed to form a comprehensive control instruction, and the comprehensive control instruction is fed back to the execution mechanism to realize closed-loop adjustment, so that the pressure stability and the position fixation of the plate in the whole grabbing and transferring process are finally kept, and the slippage phenomenon is effectively eliminated. The pressure control precision and the anti-sliding stability in the plate transferring process are improved.

A camera system has at least a first and a second camera each with an image sensor. Active areas of the image sensors of the first and second camera are determined and define an extended image space of a real-time panoramic video. A bounding box captures a fixed position in space or an object is set. The bounding box moves through extended image space. Image data determined only by the bounding box is harvested from camera image sensors and displayed within a window on a screen in real-time. Scan-line control of images sensors based on the bounding box is updated in real-time to form an e-gimbal. Steps of the e-gimbal are performed by a machine learning inference phase on a processor.

A method and system for eliminating 2D features from planar surfaces in 2D images. Three digital images are taken, from a single camera at a fixed position, of a subject such as a pallet of boxes. One image (IA) is taken with ambient lighting, one image (I1) has ambient lighting plus a first added light source, and one image (I2) has ambient lighting plus a second added light source. An output image Q is then computed by Q=(I1−IA) / (I2−IA). Subtracting the ambient image removes ambient diffuse and specular reflections. Division eliminates all variations in the output image caused by color. The only variations that remain are those due to the angle between each surface point's normal direction and the direction from the light to that point. The output image Q, devoid of all colors and 2D features, is well suited for computing a robot grasp of an object in the image.

A detection method for a retail environment comprises providing a thermal camera in a fixed position relative to a monitoring area within a retail environment, such that a part of a field of view of the thermal camera includes a part of the monitoring area; capturing a series of images of a person in a known duration of time using the thermal camera; identifying, in each image of the series of images, the position of the person using a temperature difference to detect an edge of the person; identifying, in each image of the series of images, at least two of a head, a body, an arm and a hand of the person by detecting temperature gradients within an area bounded by the edge of the person; determining, for each image of the series of images, the position of said person's hand and / or arm relative to the monitoring area; and registering an event when said person's hand and / or arm is within the monitoring area.

The invention relates to the technical field of Bluetooth positioning, and discloses a Bluetooth positioning method and system based on multi-beacon RSSI weighted optimization, and the method comprises the steps: sequentially switching and scanning a broadcast signal of a target Bluetooth tag through a plurality of Bluetooth beacons disposed at a fixed position, so as to obtain a plurality of groups of RSSI measurement values from different directions; performing filtering processing on the multiple groups of RSSI measurement values to suppress signal fluctuation; calculating the weight of each beacon based on the filtered RSSI value, and constructing a weighted least square positioning model; and solving the coordinate position of the target Bluetooth tag by using a weighted least square positioning model. According to the invention, through adoption of a multi-beacon rapid switching acquisition and RSSI weighted optimization mechanism, signal quality differences of different beacons can be effectively distinguished, and dynamic weight descending processing is carried out on measurement values which are seriously interfered by a multipath effect and shielding, so that the positioning precision and stability in a complex indoor environment are remarkably improved.

The invention relates to the technical field of detection equipment, and provides a thickness detection device for disc friction plates, which comprises a machine table and a rack fixed on the machine table, a rotating mechanism is arranged on the machine table, and a plurality of annularly distributed disc friction plates are placed above the rotating mechanism. A plurality of clamps used for fixing disc type friction plates are arranged on the top of the rotating mechanism, and a first motor is fixed to the lower portion of the machine table. Under the driving of the driving mechanism, intermittent rotation of the rotating mechanism can be realized, when the placing disc is in a rotation switching angle, the detection probe is just in a neutral position and is kept at a fixed position on one side of the disc type friction plate, and when the placing disc is in an intermittent time period when rotation stops, the detection probe is just in a neutral position and is kept at a fixed position on one side of the disc type friction plate. Compared with the prior art, the detection probe just can carry out flat-scanning detection on the disc friction plate below and automatically reset, and compared with the prior art, the flat-scanning detection mode matched with the radian of the friction plate is adopted, so that the coverage range can be increased, and the detection capacity is improved.

The invention provides a numerical control disc sawing machine, and relates to the field of machining, a disc cutting mechanism, a rotating mechanism and a material fixing mechanism are arranged in a rack, the material fixing mechanism is arranged above the disc cutting mechanism, and the clamping end of the material fixing mechanism is far away from or close to the disc cutting mechanism; the rotating mechanism is connected with the disc cutting mechanism and drives the disc cutting mechanism to rotate with the vertical direction of the rack as the axis. A workpiece is fixed to the disc cutting mechanism through the material fixing mechanism, and after the rotating mechanism rotates the disc cutting mechanism to a needed angle with the vertical direction of the rack as the axis, a linear feeding assembly of the disc cutting mechanism drives the disc saw assembly to conduct linear feeding in the length direction of a cutting opening of the cutting table. And meanwhile, the cutting part of the disk saw assembly cuts the workpiece fixed on the cutting table, that is, on the premise that the workpiece is firmly clamped to the fixed position, the cutting mechanism is driven by the rotating mechanism to complete flexible angle adjustment, and then the workpiece is cut.

The invention relates to an article searching method and device for a complex indoor environment, and the method comprises the steps: dividing objects in the complex indoor environment, obtaining environment articles with relatively fixed positions and dynamic articles with uncertain positions, building a semantic relation graph according to the prior relation between the environment articles and the dynamic articles, and searching the objects in the complex indoor environment according to the semantic relation graph. The search efficiency is improved by utilizing a prior relationship; a semantic layer map containing scene and environment article information is established based on the semantic relation graph, and the semantic layer map provides semantic understanding of the environment, so that the robot can recognize different scenes and articles; constructing a topological layer map containing the optimal observation point of the article and the scene connection point; the topological layer map provides structural information of the environment, so that efficient navigation and search are facilitated; when the robot detects a target object in the complex indoor environment, path planning is carried out according to the semantic layer map, the topology layer map and the semantic relation map, and a global path of the target object is obtained; therefore, path searching and rapid and accurate article positioning are realized.

The invention belongs to the technical field of image processing, and discloses a cable tube well hole site occupation detection method based on multi-view image fusion, which comprises the following steps of: selecting a fixed position in a cable tube well, and acquiring images of the same well wall section from upper, lower, left, right and front five views by using handheld imaging equipment; performing guided filtering denoising and contrast-limited histogram equalization processing on the image to enhance the image quality; extracting a contour and calculating circularity, and determining a candidate circle center through a segmented recursive circle center positioning method; cross-view matching and verification are carried out on the holes with shielding, feature restoration is realized through centroid alignment and curvature similarity calculation, and the hole position state is judged by adopting a majority decision principle; and finally, performing joint decision-making based on the spatial positions, direction consistency and texture features of the cable and the hole, and generating and outputting an occupancy state matrix. The method effectively improves the recognition precision and robustness in a complex shielding environment, and is suitable for power resource management.

An embodiment vertiport includes a main body portion having a lower space, a take-off and landing zone disposed in the lower space and spaced apart from the main body portion by a predetermined gap, a door portion disposed in the gap and configured to open or close the gap, a plurality of elevating portions disposed to surround the take-off and landing zone in the lower space, a ring-shaped portion surrounding the take-off and landing zone and connected to the plurality of elevating portions, wherein the ring-shaped portion is configured to be elevated by the plurality of elevating portions, and a plurality of generators disposed on the ring-shaped portion in a fixed position.

An embodiment vertiport includes a main body portion having a lower space, a take-off and landing zone disposed in the lower space and spaced apart from the main body portion by a predetermined gap, a door portion disposed in the gap and configured to open or close the gap, a plurality of elevating portions disposed to surround the take-off and landing zone in the lower space, a ring-shaped portion surrounding the take-off and landing zone and connected to the plurality of elevating portions, wherein the ring-shaped portion is configured to be elevated by the plurality of elevating portions, and a plurality of generators disposed on the ring-shaped portion in a fixed position.

The invention relates to the technical field of fabric treatment equipment, in particular to an anti-collision cylinder detection method, electronic equipment and fabric treatment equipment. The anti-collision cylinder detection method is used for carrying out anti-collision cylinder detection on a fabric processing cylinder, a plurality of damping pieces are connected between the fabric processing cylinder and the fixing position of a box body, the anti-collision cylinder detection method comprises the steps that the geometric state variable quantity of the damping pieces is detected in real time, and the geometric state variable quantity at least comprises the telescopic quantity and the space inclination angle of each damping piece; and determining whether the fabric processing cylinder has a cylinder collision risk or not according to the geometric state variable quantity. According to the method and the device, whether the fabric processing cylinder has the cylinder collision risk or not can be accurately judged by utilizing the geometric state variation of the multiple damping pieces, so that the operation safety and reliability of the fabric processing equipment are effectively improved, and meanwhile, the use experience feeling of a user is also improved.

The invention relates to the technical field of data processing, in particular to a linear motor positioning precision dynamic test and analysis method, which comprises the following steps of: controlling a linear motor to perform full-stroke reciprocating constant-speed scanning, synchronous high-frequency acquisition of positions, current instructions and speed data; resampling according to a fixed position interval space to generate forward and reverse current and speed sequences; utilizing the characteristic that the friction force directions are opposite to counteract the friction component, calculating the resistance characteristic value of each position by combining the two-way speed stability weight, and constructing a resistance topographic map; the magnetic cogging effect and the mechanical anomaly are decoupled through the space gradient and the statistical deviation, and the mechanical anomaly saliency is determined; and a current feed-forward compensation table is generated and written into a driver, and a fault is marked for a saliency threshold exceeding position, so that dynamic testing and analysis of positioning precision are realized. According to the method, the resistance component is accurately separated by combining the current algebraic operation and the bidirectional speed weight, the topographic map is constructed to decouple the tooth socket and the installation abnormity, and the dynamic test precision and the diagnosis practicability are improved.

The invention discloses an automobile long-distance speed recognition and tracking method based on target detection, and the method comprises the steps: collecting a vehicle driving video in real time through a fixed camera position and angle, and carrying out the recognition of a vehicle in each frame of image of the video through a pre-trained YOLOv12 target detection model; performing preliminary speed estimation on the automobile by adopting an inter-frame difference method, further constraining a speed change rate, and performing time sequence correction on the speed change rate by adopting Kalman filtering to obtain a corrected speed estimation value; calculating the displacement and the motion deflection angle of the adjacent frames in the transverse and longitudinal directions, and integrating the displacement and the motion deflection angle with the corrected speed estimation value to form a time sequence input feature; and carrying out modeling on a historical track through the trained time sequence deep learning model to realize dynamic speed correction. According to the method, the dependence on physical space calibration is obviously weakened, the perception capability of the model on the motion trend is improved, and the method is suitable for vehicle tracking and speed measurement tasks in long-distance and low-resolution scenes.

An automated storage and retrieval system includes a rail system with a first set of parallel rails extending in a first direction and a second set of parallel rails extending in second direction. The second direction is perpendicular to the first direction. The system includes a plurality of container handling vehicles on the rail system operable to handle storage containers. Each container handling vehicle includes a positioning node and a local controller adapted to control movements of the container handling vehicle. The system includes a positioning system comprising at least three reference positioning nodes spaced in fixed positions on and / or proximate the rail system. The positioning system is adapted to determine a position on the rail system for each of the container handling vehicles based on signal measurements between the positioning node of each container handling vehicle and the at least three reference positioning nodes. A control system is adapted to communicate with each local controller in each container handling vehicle and the positioning system. The control system is adapted to: instruct a first container handling vehicle to move to a target position, repeatedly receive position data from the positioning system of a position of the first container handling vehicle and repeatedly receive position data from the positioning system of a position of a second container handling vehicle, and instruct the second container handling vehicle to move with and follow the first container handling vehicle within a predetermined separation from the first container handling vehicle based on the received position data of the positions of the first and second container handling vehicles.

The invention discloses a data processing method, a storage medium, electronic equipment and a program product, and relates to the technical field of data storage.The data processing method comprises the steps that firstly, temperature information of a flash memory storage unit, the number of erasing times corresponding to all blocks in the flash memory storage unit and historical access information of all pages corresponding to all the blocks are obtained; analyzing charge leakage risk information corresponding to each block according to the temperature information and the erasing times; analyzing access popularity information corresponding to each page according to the historical access information; on the basis of the charge leakage risk information and the access popularity information, a refreshing list is generated, and target blocks and target pages corresponding to the target blocks are stored in the refreshing list; and finally, executing a refreshing function according to the refreshing list so as to read the data of the target page into a page register of the flash memory storage unit. Compared with the prior art, the method has the advantages that the pertinence and the execution efficiency of the refreshing operation are improved, and the problem of resource waste caused by refreshing in a fixed period and a fixed position is avoided.

A debris chute assembly for removing debris from a height during construction or similar activity includes a scaffold, a plurality of wall members, and a plurality of corner members. The wall members hang on ledgers of the scaffold in tubular sections which align with each other. The corner members attach to standards of the scaffold and retain the wall members in fixed positions with respect to the scaffold. Various embodiments of corner members are provided which attach to the scaffold by various fastening means.

The invention discloses an online vectorization high-precision map generation method based on point features, which is characterized in that real-time high-quality generation of an online vectorization high-precision map is realized by utilizing a Point MapNet network, and the Point MapNet network is obtained by improving a BEV feature coding module and a map element decoding module of an original MapTR network; the BEV feature coding module is improved in the following steps: replacing BEV features sampled at fixed positions with position learnable point features, naming the improved BEV coding module as a point feature coding module, enabling the point features to learn a spatial position containing a detection object in a sensing area through bipartite graph matching and distance loss calculation, and updating the position of the point features; the map element decoding module is improved as follows: attention masks based on distance are used, so that map element features are only interacted with point features of a near space. Through the improvement, the reasoning speed is increased and the training cost is reduced while higher map generation quality is achieved.

An excavator includes a lower traveling body; an upper turning body turnably mounted to the lower traveling body; an acquisition device mounted to the upper turning body and configured to acquire information including a status around the excavator; and a control device configured to recognize a reference object that is in a stopped state or at a fixed position around the excavator based on the information acquired by the acquisition device, and to estimate a turning angle of the upper turning body based on a change in a position of the reference object as viewed from the upper turning body.

A sensing device includes a housing including a first side wall member arranged in an up-down direction with respect to a bottom surface; a first handle formed in a closed curve shape, at least a portion of which is exposed to an outside of the housing and placed on a predetermined first surface, and coupled to one side of the first side wall member so as to be capable of orbital movement along an extension direction of the closed curve at a predetermined location on the closed curve; a first rotating body rotating around a predetermined first rotation axis in conjunction with the orbital movement of the first handle; a support member coupled to the housing, and supporting the first handle such that the first handle maintains a fixed position at the predetermined location; and a first sensor sensing information on a rotational movement of the first rotating body.

The invention discloses a supply chain demand prediction method and device based on Transform architecture and a medium, and the method comprises the steps: obtaining supply chain inventory information, and carrying out the preprocessing of the supply chain inventory information, so as to generate a multi-modal feature matrix corresponding to the supply chain inventory information; based on a Transform architecture, generating a position code formed by fusing a fixed position code and a dynamic period code, and adding the position code to a time sequence feature dimension in the multi-modal feature matrix to obtain a position enhanced feature matrix; time sequence features in the position enhancement feature matrix are used as query vectors, text features and image features are used as key vectors and value vectors, and an attention weight matrix is calculated based on a multi-head attention mechanism; and according to the attention weight matrix and the position enhancement feature matrix, generating prediction demands corresponding to a plurality of time steps in the future.

The invention relates to the technical field of mechanical clamping hands, and discloses a mechanical clamping hand and a constant-temperature and constant-humidity closed box system comprising the mechanical clamping hand, the mechanical clamping hand comprises a mechanical arm and a mounting plate, the mounting plate is arranged at one end of the mechanical arm, and a T-shaped rail is arranged on the outer surface of the mounting plate. The first plate bodies are limited through the second plate bodies, one of the two first plate bodies can be static relative to the block bodies, the other first plate body rotates relative to the block bodies, at the moment, one of the two block bodies is static at the fixed position of the T-shaped rail, and the other block body is driven by the first plate bodies to move close to the static block body in the central axis direction of the T-shaped rail; by means of the device, when the distance between the measuring cylinder and the inner wall of the closed box is small, one block close to the measuring cylinder is still, then the measuring cylinder is clamped through the other block, and normal sample separation of samples cannot be affected.

The present invention discloses a method for calibrating the pose relationship between a robot and a turntable by using a laser tracker, including: Step 1: Divide the robot base into several regions and mark them; Step 2: Fix the laser tracker at a position between the robot base and the turntable. By placing several laser tracker accessories in several regions respectively, collect and record; Step 3: The robot is positioned on the robot base. Place several laser tracker accessories in the robot respectively, collect and record; Step 4: Place the laser tracker accessory at a fixed position on the turntable. By controlling the rotation of the turntable, rotate at intervals of 1 degree each time and record in sequence; Step 5: Change the fixed position of the laser tracker accessory. By controlling the rotation of the turntable, rotate at intervals of 1 degree each time and record in sequence. The present invention uses a laser tracker to calibrate the position relationship between the robot and the turntable, and maximally avoids the calibration errors caused by manual intervention.

The invention belongs to the technical field of bearing polishing equipment, particularly relates to a transmission part bearing polishing device and method based on positioning, and provides the following scheme aiming at the problem that the polishing efficiency and precision can be influenced by changing the fixed position of an existing transmission part bearing polishing device during polishing: the transmission part bearing polishing device comprises a bearing platform; the bearing body is positioned above the bearing platform; and one ends of the three brackets are fixedly connected with the exterior of the bearing platform, and the other ends of the three brackets are fixedly connected with the same movable ring. According to the transmission part bearing polishing device and method based on positioning, the device can achieve quick bidirectional switching and fixing on the outer portion and the inner wall of a bearing body, and therefore the bearing body is always in a fixed state in the process that the device polishes the bearing body; and the time for switching the fixing position of the device is greatly shortened, the positioning accuracy of the bearing body is improved, disturbance to the position of the bearing body is avoided, and the grinding accuracy is ensured.

The road bicycle reflector convenient to adjust comprises a reflector base, an expansion plug handle and a middle base, a lens is fixedly connected to the inner surface wall of the reflector base, a connecting base is fixedly connected to the outer surface wall of the expansion plug handle, and a supporting base is arranged at the bottom of the connecting base. In the invention, the mirror body is vertically moved, the matching seat is linked with the fixed seat through the matching of the middle seat and the locking rod, the fixed seat and the matching seat slide along the vertical chute in the middle of the supporting seat until the mirror body reaches a specified vertical position, then the locking rod is completely screwed, and the fixed seat is tightly attached to the outer surface wall of the supporting seat; and meanwhile, the axial adjustment range of the mirror base is expanded for the mirror base through the universal ball head, so that the mirror base can be subjected to three-dimensional multi-angle adjustment, and the application range of the road bicycle reflector is widened while stable use of the reflector is guaranteed.

The utility model relates to a fixing device and detection equipment. The fixing device comprises a jacking platform; the fixing structure comprises a fixing seat, two limiting units and two blocking units, and the fixing seat is installed on the jacking platform and provided with a fixing position used for containing wheels of the vehicle; when the wheel is located on the fixing position, the two limiting units are controllably connected with or separated from the two sides, in the first direction, of the wheel in an abutting mode, and the two blocking units are controllably connected with or separated from the two sides, in the second direction, of the wheel in an abutting mode. The two limiting units and the two blocking units are combined, so that the periphery of the wheel can be fixed and clamped, the wheel can be fixed to the fixing position, and therefore the position of the vehicle is fixed, and it is guaranteed that the vehicle is always located at the fixed position in the jacking and overhauling process. Through the fixing device, the periphery of the wheel can be fixed, the fixing effect is better, the vehicle can be always located at a fixed position in the testing process, and then normal proceeding of the vehicle detection process is effectively guaranteed.

The embodiment of the invention discloses a shape sensing method and system for a rope-driven continuum robot, at least two flexible sensors fixed in a spiral mode are arranged on a flexible framework, and the method comprises the steps that a universal shape sensing model is established based on a constant curvature hypothesis; for any joint module, driving the joint module to a test shape, and solving an actual fixed position of the flexible sensor by adopting a numerical iteration method based on the general shape sensing model; driving the joint module to a working shape, and solving an output value of a flexible skeleton shape parameter by adopting a numerical iteration method based on a general shape sensing model and an actual fixed position of the flexible sensor; and determining the shape of the robot based on the output value of the flexible skeleton shape parameter corresponding to each joint module. According to the method, the fixing precision does not need to be considered when the flexible sensor is fixed, the shape change of the robot is accurately sensed by establishing and calibrating the model, and the problems of high sensor mounting precision requirement and poor sensing reliability in an existing method are solved.

The invention discloses a numerical control lathe tool center calibration device. The numerical control lathe tool center calibration device comprises a workbench, a first moving assembly, a second moving assembly, a tool changing assembly, a driving assembly, a contact type tool setting gauge and a cleaning assembly. The workbench serves as a basic bearing structure of the device and is used for installing and supporting all components. The first moving assembly and the second moving assembly are used for controlling the tool changing assembly to move and adjust the coordinate position in the plane. The driving assembly is used for controlling the contact type tool setting gauge to move in the horizontal plane, so that the driving assembly is close to the cleaning assembly to control the contact type monitoring end to clean scraps and cutting fluid, and spatial position movement of the tool changing assembly and the contact type tool setting gauge can be achieved at the same time. The tool setting device can flexibly adapt to the position difference of machining surfaces of different types of tools on the tool turret, solves the problem that a traditional tool setting device cannot adapt to multi-tool detection due to the fact that the position of a tool setting gauge is fixed or the adjustment dimension is limited, and achieves full-coverage detection of multiple tools.

The application relates to an automatic production device and method of a gusset bag, and relates to the technical field of a packaging bag production device, and comprises a bag body forming device, the bag body forming device comprises four groups of discharging mechanisms arranged above, below, left and right, which are used for releasing sheet films and surrounding four sides of the bag body; a gusset sheet mounting device is arranged at a discharging end of the bag body forming device, is used for conveying the gusset sheet between two adjacent sheet films, and pre-fixes the gusset sheet and the sheet film; a hot wire edge sealing device is arranged at a discharging end of the gusset sheet mounting device, comprises multiple groups of heating mechanisms, and performs heat sealing on the pre-fixed position of the gusset sheet and the sheet film; and a fixed-length cutting device is arranged at a discharging end of the hot wire edge sealing device, comprises a cutter assembly that can be lifted up and down, and is used for fixed-length cutting of continuous sheet films. The application can reduce manual participation, improve the production quality and efficiency of products, the products can be continuously produced, and the consistency is higher.