78results about How to "Reduce positioning deviation" patented technology

The invention discloses a turnover fixture, a power battery assembling method and equipment which can be applied in the field of power battery soft packaging. The turnover fixture is composed of a base plate, an upper cap and a buffering mechanism. The fixture is coupled with a battery core, and is used for positioning the battery core. During a transportation process, the turnover fixture can beused for protecting the battery core, and for improving the battery core positioning precision. With the turnover fixture provided by the invention, positioning deviation during battery core transportation is reduced, and the battery core is prevented from being directly contacted. The invention also provides the equipment comprising a conveyor, a cap fixing machine, a cap opening machine, and a conveyer manipulator. The invention establishes a production line with the turnover fixtures as battery core carriers. With the production line, automatic transportation can be carried out by using the fixtures, such that the battery cores are prevented from being repeatedly transported by using human hands or manipulators, such that the consistency of the battery cores can be endured.

The invention relates to an X-ray weld defect detection method based on a convolutional neural network, and the method comprises the following steps that a weld image data set containing different types of weld defects is built, and all weld images in the data set are marked with weld labels; an AF-RCNN model is established, wherein the AF-RCNN model comprises a backbone network module, a region generation module and a target classification and position regression module; the backbone network module adopts a residual network (ResNet) and a feature pyramid network (FPN) structure, an efficient convolution attention module is introduced between the residual network (ResNet) and the feature pyramid network (FPN) to enhance the learning ability of the network for unobvious defects and small target features, and a CIOU loss function is introduced to enhance the positioning ability of aiming frames; and an AF-RCNN model is trained by using the established data set, wherein the AF-RCNN model is used for classifying and positioning weld defects. The accuracy of all defects reaches 94% or above, and the detection speed is 11.65 FPS.

The invention relates to an accurate locating method based on a communication base station. The method comprises the following steps that a. information of the communication base station is obtained through a mobile terminal, and the obtained information of the communication base station comprises a community number of the base station, a number of the base station and a signal intensity damping value; b. a communication base station database is inquired, and the longitude and latitude coordinate values of each obtained communication base station are obtained; c. according to the signal intensity value between the mobile terminal and each communication base station and sending power corresponding to each communication base station, the direct proportion distance between the mobile terminal and each communication base station is estimated; d. according to the direct proportion distance between the mobile terminal and each communication base station, a locating weight value corresponding to each communication base station is computed; and e. the locating weight value of each communication base station and the longitude and latitude coordinate values of each obtained communication base station are used for computing the position of the mobile terminal. According to the method, operation is convenient, locating deviation can be reduced, locating accuracy is improved, adaptability is high, and safety and reliability are achieved.

The invention provides a city road network vehicle coordinate correcting method based on the plough satellite. The city road network vehicle coordinate correcting method comprises the steps of obtaining vehicle plough satellite information; processing a city road network in a meshing mode; reading vehicle coordinate information; determining a mesh where vehicle coordinates are located; determining the sudoku where the vehicle coordinates are located; determining a candidate road segment set; calculating distance and direction angle deviation; calculating matching indexes; determining matching road segments; updating the corrected vehicle coordinates. The invention further discloses a city road network vehicle coordinate correcting device based on the plough satellite. According to the city road network vehicle coordinate correcting method and device based on the plough satellite, by structuring the sudoku and a coordinate matching index model, vehicle coordinates in the city road network can be quickly and accurately positioned, the deviation of city network plough satellite positioning under the high-rise building traffic environment is reduced, the speed of matching massive data is increased, and the operation efficiency and the service level of a floating vehicle traffic information collecting system are increased.

The invention provides a strip tail positioning control method for a cold continuous rolling coiling machine. With the minimum strip tail positioning deviation as an objective function, accurate positioning control is performed on the strip tail length of the coiling machine by establishing a strip tail positioning speed calculation model, a primary positioning length calculation model and a secondary positioning length calculation model so that the best strip tail positioning effect can be achieved. By means of the method, the problem of inaccurate positioning caused by manual adjustment is solved; the calculation and control accuracy of the strip tail positioning position can be greatly improved; the positioning deviation is reduced to less than 0.05 m from 0.2 m; while the yield of cold-rolled strip steel is increased, the production efficiency and product quality of continuous rolling are improved, and the labor intensity of operators is greatly relieved. Original control equipment is fully utilized, so that investment for technology introduction is reduced; maintenance is easy; the strip tail positioning control method for the cold continuous rolling coiling machine is novel and suitable for industrial application.

The invention discloses a bi-static synthetic aperture radar moving target location method. The method comprises the following steps: S1) establishing an airborne BiSAR space geometry structure, and finishing parameter initialization; S2) establishing a mathematical model for moving target echo in a BiSAR imaging area; S3) obtaining a moving target equivalent radial velocity expression; S4) establishing a reception dual-channel echo in track direction; S5) carrying out phase compensation on the dual-channel echo; S6) carrying out interference processing on the dual-channel echo signals; S7) obtaining a moving target location equation through a gradient analytical method; and S8) solving the target location equation through a genetic algorithm to obtain the position of a moving target. By constructing receiver double channels, equivalent radial velocity of the moving target with respect to a receiver is obtained through the echo interference processing; the moving target positioning formula is deduced through an R-D location model; and the moving target positioning formula is calculated based on the genetic algorithm, so that the moving target can be positioned, and positioning deviation is small.

The invention discloses an electrocardiosignal waveform detection method. The method comprises the steps that step B, position information of starting points and end points of QRS waves of N lead electrocardiosignal waveforms and position information of end points of T waves of the N lead electrocardiosignal waveforms are acquired; step C, the N lead electrocardiosignal waveforms are subjected tosignal quality grade ranking; step D, first six preferred leads with the minimum signal quality SQ values are selected for P wave detection; step E, P wave crest amplitude values of the six preferredleads are ranked; step F, electrocardiosignal waveforms of the first four preferred leads in the P wave crest amplitude value grade AL in the step E are selected for location of starting points and end points of P waves; step G, according to the acquired positions of the starting points and end points of the P waves of the electrocardiosignal waveforms of the four preferred leads, the positions ofthe starting points and end points of the P waves are comprehensively analyzed, and position information of the starting points and end points of the P waves is output. Through multi-level screening,a lead group of the optimum signal quality and the higher P wave crest value is found and is subjected to feature point detection, and the detection accuracy is improved.

The invention relates to the technical field of wind power blade manufacturing, and provides a wind power blade web plate perpendicularity regulating tooling and regulating method. The provided wind power blade web plate perpendicularity regulating tooling comprises two groups of regulating frames (7), wherein each regulating frame (7) is provided with at least one vertical surface parallel to a web plate (2), at least two regulating elements capable of forwards and backwards moving are arranged on each vertical surface, each regulating element is provided with a regulating screw rod arranged in a way of being vertical to the vertical surface of the corresponding regulating frame, each regulating screw rod can forwards and backwards move in a direction of being vertical to the vertical surface of the corresponding regulating frame, the end parts of the regulating screw rods are provided with regulating baffle plates, and the back ends of the regulating frames (7) are provided with support blocks (9) pasted with a blade SS surface casing (1). The regulating method has the advantages that through regulating the regulating screw rods, the regulating baffle plates arranged at the end parts of the regulating screw rods push the web plate to act for achieving the goal of regulating the angle. The tooling and the method provided by the invention have the advantage that the positioning accuracy of the wind power blade web plate in the horizontal and vertical directions can be ensured.

The invention discloses a welding fixture of automobile control arm mounting support seats. The welding fixture comprises a fixture base, an anti-fault positioning block, a limit block, an L-shaped shaping block, a U-shaped shaping block, a pushing clamp and a fastening pin. The limit block and the anti-fault positioning block which is used for accommodating the control arm mounting support seat are mounted on the fixture base, the fixture base is provided with a fixing seat used for mounting the pushing clamp, the limit block and the fixing seat are respectively located on two sides of the anti-fault positioning block, the L-shaped shaping block and the U-shaped shaping block are mounted on the anti-fault positioning block and are located on two sides of the control arm mounting support seat, the pushing clamp pushes the control arm mounting support seat to move towards the limit block, and the fastening pin penetrates and is clamped tightly through the L-shaped shaping block, the U-shaped shaping block and the control arm mounting support seat. Compared with the prior art, the welding fixture has the advantages that welding fixture has an anti-improper-mounting function, the control arm mounting support seat can be positioned reliably, stabilizing rod support positioning errors caused by unreliable part clamping and positioning are reduced, and errors of assembling size are avoided.

The invention relates to a high-precision heating furnace steel drawing positioning control method. The control method is a method for controlling the positioning accuracy during steel drawing of a slab of a heating furnace, the heat-state width of the slab is utilized, according to the half heat-state width of the slab, the center line of a discharging roller way serves as an original point, and the motion stroke of a steel drawing machine is calculated; according to the control method, it is ensured that the slab can be simply and effectively drawn to the position of the centre line of a furnace drawing roller way, the positioning precision of the slab on the roller way after steel drawing is improved, and the frequency of steel clamping caused by inaccurate positioning when the slab enters a mill is reduced.

The invention discloses an eyelid topology morphological feature extraction method based on deep learning. The method specifically comprises the following steps: collecting an electronic digital photo of a normal person, processing the electronic digital photo, constructing an ROI image training set, and inputting the ROI image training set into a to-be-trained convolutional neural network to obtain a trained convolutional neural network; positioning an eye region-of-interest (ROI) position by using a facial recognition method for a to-be-detected electronic digital photo to obtain a to-be-detected ROI image; inputting the to-be-detected ROI image into the trained convolutional neural network to output an image with an eyelid contour line and a cornea contour line, determining a circular scale and a pupil center of the to-be-detected electronic digital photo, and extracting eyelid topology morphological characteristics of a single eye. According to the method, the eyelid and cornea structures are segmented by using the convolutional neural network; after the center of the pupil is determined by using Mean Shift clustering, the parameters of the related structure of the eyelid are automatically calculated, so that the accuracy equivalent to that of manual measurement is obtained.

The invention relates to a noodle processing device, in particular to a noodle making machine. The noodle making machine comprises a noodle squeezing cylinder and a noodle squeezing rod which is located above the noodle squeezing cylinder, and a noodle pressing device is arranged at the lower end of the noodle squeezing rod; the lower end of the noodle squeezing rod is provided with a conical blind hole coaxial with the noodle squeezing rod, a permanent magnet block is arranged in the blind hole, the noodle pressing device comprises a noodle squeezing plate and a connecting rod, one end of the connecting rod is fixedly connected with the middle of the noodle squeezing plate, and the other end of the connecting rod is connected with the conical blind hole in the noodle squeezing rod in a matched mode. The noodle making machine has the advantages that material waste is reduced, and production cost is reduced.

The invention discloses a track calculation method and system based on a cloud side, and the method comprises the steps: enabling a user to upload GPS positioning data to the cloud side, building a movement track database at the cloud side, carrying out the machine learning of the historical movement rack data of all users in the movement track database, extracting a regular path, and carrying outthe fitting of the regular path as a real running track of the user. The method achieves the fitting of a prediction path through the analysis via a big data algorithm, cannot be limited by the space, region and time, and greatly reduces the problems of track map positioning deviation, drift and no step-down operation to maximum degree. In addition, the method also can greatly save the electricity consumption of positioning.

The invention discloses a robot quick-changing gripper for grinding, in particularly to a robot quick-changing gripper for blade grinding. The robot quick-changing gripper for blade grinding comprises a robot connecting component, an electromagnet, a base plate and a guiding mechanism. The electromagnet is arranged on the robot connecting component, the base plate is arranged on the electromagnet and detachably connected with the robot connecting component, and the guiding mechanism is arranged on the base plate. The guiding mechanism comprises a locating block I, a locating block II, a holding bolt and a pressing block. The positioning block I and the positioning block II are fixed to the base plate and connected into a whole through fixing pins. The holding bolt is movably connected with the positioning block I or the positioning block II in a matched mode, and the pressing block is arranged at one end of the holding bolt and movably connected with the fixing pins. A workpiece recognition mechanism is arranged on the robot connecting component. According to the robot quick-changing gripper for blade grinding, the problem that workpiece needs to be changed in a working area is solved, the clamping time is shortened, the production efficiency is improved, production cost is lowered, and manual operation mistakes are avoided.

The invention provides a printing display-oriented printing height control system and method. The printing display-oriented printing height control system comprises a spray head lifting module, a substrate fixing module, a first sensor, a second sensor, a sensor controller and a motion driving controller; the spray head lifting module comprises a spray head, a spray head clamping device and a lifting mechanism; the substrate fixing module is arranged below the spray head lifting module and comprises an adsorption platform; the first sensor and the second sensor are used for detecting the real-time distance between a nozzle and a substrate and generating a first detection original signal and a second detection original signal; the sensor controller is used for acquiring the first detectionoriginal signal and the second detection original signal and sending the first detection original signal and the second detection original signal to the motion driving controller through signal processing and correction operation; and the motion driving controller is used for carrying out full-closed-loop control and driving on the lifting mechanism. According to the printing display-oriented printing height control system and method, the printing height control system and the two sensors are arranged in a combined mode, measured values of the multiple detected objects are corrected, the height or position relation is established, and non-contact self-adaptive printing height positioning control can be better achieved.

The invention provides a student experiment classroom behavior identification method based on top vision, and mainly solves the problems of high workload and poor timeliness caused by manual information extraction in traditional behavior recognition. According to the implementation scheme, the method includes installing a camera vertically above the desktop of each experiment table, performing video sampling on behaviors of students during experiment, and performing image frame extraction and calibration on sampled video streams to obtain a data set; training a target detection network by using the data set to obtain a trained target detection model; inputting a student experiment classroom video into the trained target detection model to obtain a picture for framing the hands of the student; and classifying all pictures framing the student hands by using a deep learning classification model to generate a recognition result of the student hand behaviors. According to the invention, the data processing amount and the calculation amount are reduced, pictures of the hand behaviors and actions of the students can be accurately obtained and stored in a laboratory with dense equipment and scattered students, and the pictures can be extracted by teachers and can be used for experiment teaching.

The invention relates to the technical field of machining, in particular to a two-face machining method for a blank. In the method, outer circle corners are machined in the first surface of the blank,so that positioning structures are reserved after the blank is turned; inner circle corners corresponding to the outer circle corners are machined on positioning blocks, so that the effect of position finding in secondary cutting after the blank is turned; the radius of the inner circle corners formed by cutting of the positioning blocks is equal to that of the corresponding outer circle corners,the outer circle corners and the inner circle corners can be completely embedded to realize accurate positioning after the blank is turned, in this way, the positioning deviation between the two faces of the blank can be reduced, and modeling defects, existing in workpieces, caused by the positioning deviation are overcome.

The invention discloses a flexible assembly welding device for thin-wall parts. The flexible welding device comprises a frame, a three-jaw chuck mechanism, a linkage clamping mechanism and an inner wall pressing mechanism; the frame comprises multiple vertical rods surrounding a cylinder, a cross beam for connecting the multiple vertical rods together and stand columns positioned among the multiple vertical rods; the three-jaw chuck mechanism is arranged on the bottom side in the frame and used for tensioning the thin-wall parts positioned in the frame; the linkage clamping mechanism is connected with the vertical rods and used for clamping the outer sides of the thin-wall parts in the frame; and the inner wall pressing mechanism is connected with the stand columns and used for pressing the thin-wall parts positioned in the frame. The flexible welding device can realize automatic centering of the thin-wall parts such as stirring cylinders and the like to reduce positioning deviations,is suitable for tank bodies with different shapes and sizes to realize flexible welding of the thin-wall parts, effectively controls alignment tolerances of the tank bodies to smoothly realize automatic welding of later stirring cylinders, and is portal in structure and convenient to maintain.

The invention provides drilling equipment and a drilling system, and relates to the technical field of drilling machining. The drilling equipment comprises a first transmission device, a positioning device and a drilling device. A plate body comprises a side edge, a first end and a second end, wherein the first end and the second end surround the side edge. The positioning device comprises a firstpositioning mechanism and a second positioning mechanism which correspond to the first end and the second end of the plate body correspondingly. The first transmission device can drive the plate bodyto move to a preset first end positioning position in the first moving direction, and can drive the plate body to move to a preset second end positioning position in the second moving direction, thefirst positioning mechanism is arranged to position the first end at the preset first end positioning device, and the second positioning mechanism is arranged to position the second end at the presetsecond end positioning device. The drilling device carries out drilling machining on the positioned end of the plate body after the plate body is positioned. Positioning deflection of the drilling position caused by plate body buckling deformation is reduced, and drilling positioning precision is improved.

In order to solve the problem of large positioning deviation of an existing positioning method for an explosion point of an artificial precipitation enhancement hail suppression bomb, the invention provides an artificial precipitation enhancement hail suppression bomb sound positioning system and a positioning method. According to the method, a positioning mode based on the fusion of the arrival distance difference and the arrival angle of the hail suppression bomb explosion point sound wave signals is adopted, the influence of clock stability and environmental factors is small, and thereforethe positioning deviation is small. In addition, a plurality of single microphone nodes are arranged, so that there are many redundant parameters and parameters for position calculation, and the position estimation of the explosion point of the precipitation enhancement hail suppression bomb is more accurate.