49results about How to "Fast correction" patented technology

The invention discloses an adaptive imaging quality optimization method for the unmanned aerial vehicle autonomous inspection of a power transmission line. According to the present invention, an eventtrigger loop control technology based on an unmanned aerial vehicle spatial position error threshold, an event trigger loop control technology based on a pan-tilt attitude position error threshold and an event trigger loop focusing technology based on a Laplace operator image definition threshold are used in sequence, the imaging quality of the inspection photos is detected at the aspects of photo shooting angle, lens focusing condition, photo clarity and the like, and a corresponding method is adopted for optimization, so that the final imaging quality of the photos is ensured. An iterativethought is adopted, the photo shooting angle is gradually optimized from the shooting position, the head direction and the pan-tilt camera attitude information, and the photo shooting angle precisionis improved, so that a target device is located at the image center position as much as possible, the subsequent focusing, definition adjustment and the like are facilitated, and the imaging quality is ensured. Meanwhile, the adjustment amplitude of the pan-tilt camera attitudes is reduced, and the mechanical loss is reduced.

The invention provides a method for automatically correcting an identification error of repeated words in Chinese pronunciation identification. The method comprises the following steps of: (1) performing similarity matching on word confusion networks which are obtained after identification of each sentence, word groups in a word group library and intermediate identification results, and searching the repeated word groups, wherein each word confusion network is a set of all possible identification results and comprises an optimum identification result, namely the original optimum identification result, and the intermediate identification result which corresponds to each word in the optimum identification result, and the word group library comprises the word groups and the intermediate identification results which correspond to the word groups; (2) according to word group information which is obtained by searching, re-calculating a similar probability value and a word identification probability value; (3) according to a new probability value, sorting the word confusion networks according to the size of the probability value; and (4) replacing the optimum identification results and the intermediate identification results of the word confusion networks by using a sorting result. The method has the advantages that: by using experience knowledge in the corrected identification result, the identification error of the repeated words in the current identification sentence is automatically corrected, so the correction efficiency and correction speed of the identification error are improved.

The invention discloses a reflow welding process simulation model correction method based on measured temperature data. By analyzing the standard deviation between the actually measured temperature curve data and the correspondingly simulated temperature curve data, a numerical simulation correction model which takes the minimization of the standard deviation between the node temperatures corresponding to the actually measured curve and the simulation curve as an optimization target and takes the temperature of the temperature zone and the convective heat transfer coefficient as optimization variables is established. The model is optimized by adopting a response surface method and a multi-objective genetic optimization algorithm method, so that the result of the numerical simulation modelis consistent with the actually measured temperature, the corrected numerical simulation model is obtained, and the accuracy of subsequent simulation prediction can be improved through feedback adjustment of one-time physical test. According to the method, the reflow welding process simulation model is corrected by a method of combining finite element simulation and tests, so that the simulation efficiency and precision are effectively improved.

The invention provides an image correcting method for a projection terminal and the projection terminal. The image correcting method comprises the steps that the horizontal deflection angle of the projection terminal is acquired, and a to-be-projected image of the projection terminal is rotated and corrected according to the horizontal deflection angle and the projection optical axis of the projection terminal. According to the image correcting method for the projection terminal and the projection terminal, the horizontal deflection angle of the projection terminal is acquired, the to-be-projected image is rotated according to the horizontal deflection angle, and therefore the problem that the projection picture is distorted when the projection terminal is rotated with the projection optical axis as the center is solved; meanwhile, due to the fact that only to-be-projected image rotating is referred in the correcting process, a complex graph correction algorithm is not needed to carry out correction, cost is low, the correcting speed is high, the power consumption and the produced heat are low, and the using experience of a user of a portable terminal is greatly improved.

A method for testing the vision of a person includes such steps as displaying the vision testing image on the display screen of computer, using a controller to input the up, down, left, or right signal relative to said testing image by the person to be tested, and determining the vision level of the person if continuous two errors are inputted. A method for improving vision of a person includes such steps as displaying a moving bright dot or image on the display screen of computer and tracking the moving bright dot or image by the eyeballs of the person whose vision is going to be improved.

An embodiment of the invention provides a method and a device for correcting a focus of a CT (computed tomography) machine. The method comprises the steps as follows: the total focus offset is calculated according to scanning working condition data; and in an operation process of the CT machine, deflection correction is performed on an electron beam emitted by a radiation source by the aid of the total focus offset. The device comprises an offset calculation module and an offset correction module, wherein the offset calculation module is used for calculating the total focus offset according to the scanning working condition data; and the offset correction module is used for performing deflection correction on the electron beam emitted by the radiation source by the aid of the total focus offset.

The invention discloses a reflow welding process simulation model correction method based on a heating factor. The method comprises the following steps: establishing a numerical simulation correctionmodel which takes minimization of the time difference between a heating factor and a hyperliquidus as an optimization target and takes temperature of a temperature zone and a convective heat transfercoefficient as optimization variables by analyzing the time difference between the heating factor and the hyperliquidus of actually measured temperature data and corresponding numerical simulation temperature data; optimizing the model by adopting a response surface method and a multi-objective genetic optimization algorithm method, so that the result of the numerical simulation model is consistent with the actually measured temperature, the corrected numerical simulation model is obtained, and the accuracy of subsequent simulation prediction can be improved through feedback adjustment of one-time physical test. According to the method, the reflow welding process simulation model is corrected by a method of combining finite element simulation and tests, so that the simulation efficiency and precision are effectively improved.

The invention discloses a chip angle correction device for LED packaging, and the structure of the device comprises a straightening machine main body, a drive stand, and a welding base. The drive stand is provided with a drive motor, a first transmission gear support, a second transmission gear support, and a conveying belt. The first transmission gear support is provided with a first transmissiongear, a first gear push rod, a first gear push rod fixing shaft, a first support rod, and a first rectifying support rod. The welding base is provided with a welding air pressure main rod, a weldingair pressure support rod, and a welding head, thereby achieving the fixing of a chip through a workpiece fixing table when the device is in use, reducing the movement range, and improving the weldingprecision. Meanwhile, the device can achieve the ordered rectification through a rectifying device, enables the chip rectification to be quick through the bidirectional repeated quick rectification, speeds up the rectification speed of the chip, increases the speed of chip processing, reduces the error rate of chip welding, and avoids the material waste.

The invention discloses a plastering machine automatic horizontal moving and walking control method and a plastering robot. The method comprises the steps that S1, four self-driven universal trundlesdistributed in a rectangular array are arranged on a chassis of a plastering machine; S2, the left end and the right end of a plastering machine head are both provided with a group of light sensing devices; S3, a reference laser surface parallel to the wall surface of a wall body is established; S4, coordinate position information of light spots projected by light signals of the reference laser surface on each group of the light sensing devices is collected through the light sensing devices; S5, deviation data is generated according to the change of the coordinate position information of the light spot; S6, the advancing direction of the self-driven universal trundles is adjusted according to the deviation data, so that the light spots projected by the light signals of the reference lasersurface on each group of the light sensing devices are located at the same coordinate positions. The effect of dynamically correcting the advancing path of the plastering machine can be achieved, it is guaranteed that the plastering machine is always parallel to the wall surface of the wall body in the process that the plastering machine moves left and right, and the construction operation efficiency can be greatly improved.

The invention discloses a quick scattering correction method for a cone beam CT (Computed Tomography) image domain. The quick scattering correction method comprises the following steps of adopting a filtering back-projection algorithm to reconstruct a three-dimensional butterfly filter mask and an original three-dimensional CT image according to actual-measurement projection, wherein the original three-dimensional CT image comprises m layers of two-dimensional CT images, and the three-dimensional butterfly filter mask comprises m layers of butterfly filter masks; setting a correction factor by aiming at each layer of three-dimensional CT image, and constructing a correction function based on the correction factors, the three-dimensional butterfly filter mask and the original three-dimensional CT images for correcting the original three-dimensional CT image; constructing an optimization function by aiming at the correction factors, wherein the optimization function comprises an optimization target function and an optimization constraint function; solving the optimization function to obtain an optimal value of each correction factor, and substituting the optimal value of the correction factor into the optimization function to obtain the corrected three-dimensional CT images. The quick scattering correction method for the cone beam CT image domain has the advantages of high precision of correction result and high correction speed.

The invention relates to a robot visual guiding system used in the car sheet pressing process. The robot visual guiding system comprises a sheet conveying belt, a six-axis robot, an industrial camera and a robot control system. The robot visual guiding system is characterized in that sheets are conveyed by the sheet conveying belt to the position under the industrial camera; the industrial camera shoots and transmits part positions; and the robot control system receives position information, compares the position information with preset position coordinates, and controls the six-axis robot to complete part position adjusting operation. According to the robot visual guiding system, automatic adjustment of the sheet positions can be achieved, the part correction speed is increased, the sheet position accuracy is improved, and the machining quality of the sheets is improved.

The invention discloses an automatic correction device for a moving arm. The automatic correction device comprises a master control module, a laser distance measuring sensor, a battery valve module and a hydraulic cylinder assembly. The master control module is electrically connected with the laser distance measuring sensor and the battery valve module. The laser distance measuring sensor is aligned to all moving arm plates of the moving arm and obtains the positions of all the moving arm plates. A plurality of hydraulic cylinder sets are arranged according to the moving arm plates needing to the corrected. The battery valve module is connected with the hydraulic cylinder assembly. The laser distance measuring sensor detects the position information of all the moving arm plates. The master control module compares the position information with a preset standard position range value and transmits correction distance parameters to the battery valve module. The feeding strokes of hydraulic cylinders are controlled by the battery valve module, and therefore the positions of all the moving arm plates are corrected. According to the automatic correction device, the correction technology of the moving arm of a loader is intelligently controlled, and the problems that in original manual correction, the labor intensity is large, the manual cost is high, and the correction precision and the production efficiency are low are solved.

The invention provides a commodity image correction method, system and equipment, and a storage medium. The method comprises the following steps that: identifying a plurality of commodity areas in animage f; connecting the center positions of two first target commodity areas to determine a reference line l1, connecting the center positions of two second target commodity areas to determine a reference line l2, and generating a reference line l3 according to the slope average value of the reference line l1 and the reference line l2; connecting the center position of each first target commodityarea with the center position of the nearest second target commodity area to generate a plurality of reference lines l4, and generating a reference line l5 according to the slope average value of theplurality of reference lines l4; and according to a transformation relationship between a horizontal base line of the reference line l3 and the image f and a vertical base line of the reference line l5 and the image f, generating a first transformation matrix so as to generate an image f0 subjected to one-time correction. By use of the method, through two first target commodity areas and two second target commodity areas, a correction reference line can be determined, correction speed is improved, and a correction effect is good.

The invention provides a calibration template. wherein the calibration template comprises three calibration surfaces which are completely the same and are vertically intersected in pairs; the calibration surface is provided with a calibration graph consisting of a plurality of squares with the same size; The invention also provides a method for rapidly calibrating the external parameters of the camera based on the calibration template, and the method can rapidly and effectively detect the rotation angles of the camera in x-y-z different axial directions on the basis of the rotation angle of the sideline and / or the reference line on the calibration template on the calibration picture. the method provided by the invention only needs to take one correction photo, and the algorithm is simple;Furthermore, the correction speed and the algorithm speed are improved; Furthermore, the precision of a subsequent algorithm is improved.

The invention relates to a simulation method and system based on nuclear power system operation. The method comprises the following steps: acquiring actual operation data of a subsystem in a nuclear power system; constructing a sub-task simulation model of the subsystem and determining influence factors of the sub-task simulation model of the subsystem; determining estimated values of the influence factors by utilizing fluid mechanics, heat transfer science and an automatic control principle; judging whether the estimated value is a correction value or not; if the estimated value is not the correction value, performing parameter optimization by using a swarm intelligence optimization algorithm to obtain an optimal value of the influence factor; correcting the sub-task simulation model of the subsystem by using the optimal value of the influence factor; determining a task simulation model of the nuclear power system according to all the corrected sub-task simulation models of the subsystems; determining a corrected task simulation model of the nuclear power system; and simulating the operation of the nuclear power system by utilizing the corrected task simulation model of the nuclear power system. According to the invention, the accuracy and the working efficiency of simulation of nuclear power system operation are improved.

The invention relates to a dual-directional extrusion type tree seedling correction device which is characterized in that a fixing frame serves as a main body, a fixing rear plate and a fixing front plate are arranged at the left end and the right end of the fixing frame, an arc-shaped surrounding structure is formed among the fixing rear plate, the fixing front plate and the fixing frame, the fixing front plate is provided with a V-shaped block, the V-shaped block are provided with an auxiliary locking conical groove and an extrusion conical column matched with the auxiliary locking conical groove, an extrusion triangle plate is arranged in the middle of the fixing frame, a pulling spring is arranged between the bottom of bevel edges of the extrusion triangle plate and the extrusion conical column, so that the extrusion triangle plate is connected with the extrusion conical column, apposition extrusion between the extrusion triangle plate and the extrusion conical column is achieved,tree seedlings are rapidly corrected, and the device is ingenious in design, convenient to operate, low in cost and simple to manufacture.

The invention relates to the field of steel structure construction, in particular to a cold correction method for a thin-wall steel member. The cold correction method for the thin-wall steel member ischaracterized by including the steps of manufacturing a supporting tool: the supporting tool comprises an upper cross rod, a lower cross rod, a bottom rod, a jack and a top plate, the upper cross rodand the lower cross rod are both barb-shaped and clamped on the member, and a bottom rod is arranged between the upper cross rod and the lower cross rod; erecting the jack: one end of the jack is temporarily spot-welded on the bottom rod, the jack is prevented from falling off accordingly, the other end of the jack is spot-welded to the steel member to be corrected, the jack is started to enablethe deformation part of the member to be corrected to be slowly changed from the convex side to the concave side, and when the deformation radian exceeds 1 / 2 of the original deformation radian, forceapplication is stopped. According to the cold correction method for the thin-wall steel member, a correction platform is not needed, gas is not needed, electricity is not used, mechanical equipment such as a crane and the like is not needed for assistance, the operation is simple, correction can be carried out by cooperation of two persons, the correction speed is high, and the deformation problemcan be solved in a member yard or an installation site.

The invention relates to an orthodontic appliance. The orthodontic appliance includes orthodontic appliance bodies, a main orthodontic wire and an auxiliary orthodontic wire, and at least two orthodontic appliance bodies are arranged; each orthodontic appliance body includes a bottom plate, a bracket body and an installation member, the bottom plate is used for being fixedly connected to the tongue side surface of a tooth, the bracket body is arranged on the side surface, opposite to the teeth, of the bottom plate, the bracket body is provided with a main groove, the installation member is fixedly connected to one end, far away from gums, of the bracket body, and the installation member, the bracket body and the bottom plate form an auxiliary groove; the main orthodontic wire is stuck in the main groove of each orthodontic appliance body; and the auxiliary orthodontic wire is stuck in the auxiliary groove of each orthodontic body. The orthodontic appliance corrects the teeth through the double orthodontic wires, can effectively control three-dimensional movement of the teeth, and has a rapid correction speed and a good correction effect. The invention also relates to an orthodonticmethod. The method uses the orthodontic appliance and a bracketless invisible correction device to correct the oral problems of a patient, and combines the bracket correction technology with the bracketless correction technology to realize complementary advantages, thereby greatly improving the correction efficiency.

An embodiment of the invention discloses a one-piece body shaping and building strip. The one-piece body shaping and building strip comprises an elastic staylace body, a brace assembly, a reinforcing staylace assembly and a plurality of flexible plastic ribs, wherein flexible plastic ribs are arranged inside an inserting interlayer in the middle of the staylace body, so that a rear lumbar supporting portion is formed on the staylace body; Velcro strips which are matched mutually are arranged at two ends of the staylace body to form front corset portions; the reinforcing staylace assembly comprises two symmetrical reinforcing strips, one ends of reinforcing strips are fixedly arranged in the middle of the rear lumbar supporting portion, and the other ends of reinforcing strips are provided with Velcro strips which are connected with the front corset portion combination; and the brace assembly comprises a pair of elastic strips which are crossed in an X shape, one ends of elastic strips are provided with brace length adjusting assemblies and matched with annular assemblies to be moveably connected with front corset portions, and the other ends of elastic strips are fixedly arranged at the upper edge of the rear lumbar supporting portion. By the aid of the one-piece body shaping and building strip, the normal physiological curve of the belly of a user can be corrected and maintained, and loads on the belly structure, which is caused by belly growing, can be effectively relieved.

The embodiment of the invention discloses an image distortion correction method and device, and the method comprises the steps: calculating at least one first distortion coordinate, each first distortion coordinate being a coordinate of a first sequence block in a distorted image, and storing the distorted image in a DDR; loading first image data in the distorted image into a first SRAM (Static Random Access Memory) based on the at least one first distortion coordinate; and carrying out distortion correction processing on the first image data, calculating at least one second distortion coordinate, and loading second image data in the distorted image into a second SRAM (Static Random Access Memory). The image data in the at least one distortion coordinate range is loaded to the SRAM from the DDR at a time, the number of times of interaction with the DDR in the image distortion correction process is reduced, the image data is loaded to the SRAM from the DDR through a ping-pong mechanism for distortion correction, the efficiency of accessing the DDR by an algorithm is improved, and then the correction speed of the image distortion correction algorithm is improved.

The invention discloses a hydraulic control system for a rear matching trailer wheel set of a shield machine, and solves the technical problems of poor walking stability and complex control operationof a rear matching trailer of an existing shield machine. The hydraulic control system comprises a hydraulic pump driven by a motor, wherein an oil inlet of the hydraulic pump is connected with an oiltank, and the oil outlet is sequentially connected with hydraulic control valves and leveling oil cylinders through a hydraulic pipeline, a telescopic cylinder of each leveling oil cylinder is connected with the rear matching trailer wheel set of the shield machine, a displacement sensor for monitoring the action of the telescopic cylinder is arranged in each leveling oil cylinder, a displacementsensor is connected with a PLC (programmable logic controller) control unit, each hydraulic control valve comprises an electromagnetic reversing valve and electromagnetic ball valves, and the electromagnetic reversing valve and the electromagnetic ball valves are all connected with the PLC control unit. The hydraulic control system has the advantages that the operation is simple, the monitoring is accurate, the feedback is timely, the correction speed is high, and the rear matching trailer of the shield machine can stably and accurately walk in a given direction.

The invention discloses an IEEE1588 protocol time calibration method based on a proportional integral algorithm. The IEEE1588 protocol time calibration method comprises the following steps: 1, calculating to obtain a time deviation value, and subtracting the system timestamp register (system_time) by the deviation value; 2, calculating a current time deviation value tb, storing the current time deviation value tb into a current time deviation value table, and calculating an integral value; 3, calculating a frequency compensation value; 4, setting an addend storage frequency compensation value of a register; 5, when the hardware crystal oscillator generates time counting, adding the updated value of the system timestamp register system time obtained in the step 1 to the counting period duration of the hardware crystal oscillator, and adding the value in the register address in the step 4 to obtain the current value of the system timestamp register system time, i.e., completing calibration of the system time. 7, receiving, by the system, the new IEEE1588 protocol and repeatedly executing the steps 2 to 5.

The invention discloses a palm image correction method and device, equipment and a medium, and the method comprises the steps: obtaining a standard key point corresponding to a standard palm image, and obtaining a target correction point from the standard key point; obtaining a to-be-corrected palm image and corresponding correction key points, and obtaining to-be-corrected points from the correction key points; calculating a transmission transformation matrix according to the target correction point and the to-be-corrected point; and performing transmission transformation on the palm image tobe corrected according to the transmission transformation matrix to obtain a corrected palm image. The calculation process is simple. The correction process is simplified. The correction speed is increased. The process of conducting perspective correction on the palm image is simple. The calculated amount is small and speed is high.

The invention discloses a chip angle correction device for LED packaging, and the structure of the device comprises a straightening machine main body, a drive stand, and a welding base. The drive stand is provided with a drive motor, a first transmission gear support, a second transmission gear support, and a conveying belt. The first transmission gear support is provided with a first transmissiongear, a first gear push rod, a first gear push rod fixing shaft, a first support rod, and a first rectifying support rod. The welding base is provided with a welding air pressure main rod, a weldingair pressure support rod, and a welding head, thereby achieving the fixing of a chip through a workpiece fixing table when the device is in use, reducing the movement range, and improving the weldingprecision. Meanwhile, the device can achieve the ordered rectification through a rectifying device, enables the chip rectification to be quick through the bidirectional repeated quick rectification, speeds up the rectification speed of the chip, increases the speed of chip processing, reduces the error rate of chip welding, and avoids the material waste.

The invention discloses a gantry type hydraulic correction device, and relates to the technical field of vehicle correction. The gantry type hydraulic correction device comprises double stand columns arranged in parallel, wherein the tops of the corresponding inner sides of the double stand columns are fixedly connected with a cross beam, the top of the cross beam is provided with an upper beam frame in parallel, the two ends of the upper beam frame are fixedly connected with lower beam frames in parallel through fixing frames, the tops of the lower beam frames are tightly attached to the bottom face of the cross beam, the two ends of the upper beam frame are fixedly connected with mounting plates perpendicular to the upper beam frame, mounting frames are arranged on the tops of the lower beam frames, a vertical hydraulic cylinder penetrating through the upper face and the lower face of the mounting frame is fixedly connected to the center of the mounting frame, and fixing plates are fixedly connected to the two sides of the mounting frame. According to the correction device, the driving mechanism is arranged on one side of the upper beam frame, one side of each lower beam frames and one side of the mounting frame, in the process that the device is used for correcting a vehicle, four-direction movement can be conducted, the situation that the vehicle needs to be continuously moved when different parts of the vehicle are corrected is avoided, and the vehicle correction speed is increased.

The invention discloses a hard-tipped pen handwriting and sitting posture correcting instrument. The hard-tipped pen handwriting and sitting posture correcting instrument comprises a wrist correctingdevice for correcting a wrist hooking posture, wherein the wrist correcting device comprises a correcting rod for keeping a wrist and a forearm in a straight line, a limiting piece and a fixing piecefor being fixed on a tabletop; the limiting piece is connected to the top of the fixing piece and can rotate within a horizontal specified angle within a limited angle range. The hard-tipped pen handwriting and sitting posture correcting instrument comprises the wrist correcting device and a neck and back correcting device; the wrist correcting device can be used for effectively correcting the wrist hooking posture during handwriting; the neck and back correcting device can be used for effectively correcting head lowering and waist bending during handwriting; and the wrist correcting device isused for correcting wrist hooking, and a right hand and an arm can freely rotate up and down and horizontally slide within a certain range, so that the hard-tipped pen handwriting and sitting posturecorrecting instrument has a very good comfort degree of freedom during correction, and is high in correcting speed and high in correcting success rate for a bad hard-tipped pen handwriting sitting posture.

The invention discloses a drum angular velocity automatic correction method and an automatic correction device, and the method comprises that: a light beam emitted by a light source enters a stripe target of a drum rotating according to a set angular velocity, and the stripe target comprises an angular velocity metering icon; the angular velocity metering icon if focused to an image sensor throughan optical system to form a deviation metering target image; the image sensor collects a deviation metering target image and compares the parameter information of the deviation metering target imagewith the parameter information of the angular velocity metering icon to obtain difference information; and the image sensor calculates the corrected angular velocity according to the difference information and the set angular velocity and controls the drum to rotate according to the corrected angular velocity. The difference information is obtained in real time according to the parameter information of the deviation measurement target image and the parameter information of the angular velocity measurement icon, and the corrected angular velocity is calculated according to the difference information and the set angular velocity, so that the correction speed of the angular velocity is increased, and the correction accuracy is also improved.