47results about How to "Improve calibration quality" patented technology

The invention provides a value traceability and monitoring method for a low-voltage current transformer automation verification system. Value traceability is performed on the low-voltage current transformer automation verification system based on a network remote correction method. The method comprises monitoring test data of low-voltage current transformer inspection samples output by the verification system through a statistical method and performing risk early warning on the low-voltage current transformer. Comparing with the prior art, time required by correction is shortened, correction costs are reduced, and the metering center work delaying time of a measuring center is reduced; results can be re-inspected on line before verification, so that the correction quality is improved; sample testing and verification data statistical processing are completed automatically through a computer, the monitoring amount of the automation verification system state is reduced, and the reliability and the timeliness of state monitoring of the automation verification system are improved.

An eccentric wheel type high-speed butt aligner for two pipes is composed of a supporting frame for bearing eccentric wheel, a fastening mechanism and a correcting system. Said supporting frame may be installer, or fixed locating ring, or a pair of parallel installing plate, or structural supporter. Said eccentric wheel has pull rod or connecting rod or chain, whose length can be regulate by regulator, and a brake unit.

The gear rack type plumbing quick matching device for plumbing welding joints, comprises gears, racks, sprockets, chains, steel wires and positioning rings, features in the teething major drive gear inside the bracket or gears in the fitting box or the wheel shifting claw on the wheel shift shaft inside the bracket, with the gear and rack or sprocket teething. In use, plumbing matching device is placed on the middle of the plumbing, circling one round of the chain connecting the matching machine, inserting the gear or sprocket at the end of the chains to the plumbing or matching device, pushing the operation bar driving the gear moving, gear shifting racks or sprockets, which shrinks the chains or steel wires. Rectifier plate forces the plumbing opening at the same axis, fastening plumbing matching device side shrinking positioning ring, realizing the matching of plumbing. It is simple, quick, energy saving with improved efficiency.

The CT beam hardening correction method based on primitive projection sonogram includes the following several steps: (1) making trisubstituted CT scanning, and obtaining primitive projection sonogram arranged into matrix; (2) making dark current and discordance correction of primitive projection sonogram; (3) searching minimum value of every line pixel projection value of primitive projection sonogram; (4) defining a group of positive real number correction coefficient less than 1; (5) subtracting the product of the correspondent line minimum value obtained by step (3) and correspondent line correction coefficient obtained by step (4) from the projection value of every line pixel of projection sonogram and implementing projection beam hardening correction of all the lines; and (6) feeding the corrected projection sonogram into CT reconstructed dynamic library.

The invention provides an underwater imaging system, underwater imaging equipment and an underwater imaging method. The underwater imaging equipment comprises a shell, an overwater object imaging device and a water surface ripple measurement device. The overwater object imaging device and the water surface ripple measurement device are located in the shell. An optical window is set on the shell. The overwater object imaging device is used for obtaining an overwater object image through utilization of the optical window. The water surface ripple measurement device is used for obtaining images of a reflected facula of a water surface ripple corresponding to the overwater object image, through utilization of the optical window. A processor carries out water surface ripple reconstruction and calibrates the overwater object image. According to the system, the equipment and the method, the overwater object imaging device and the water surface ripple measurement device employ a coaxial commonlight path structure, the water surface ripple transmitted by imaging light of the overwater object imaging device is consistent with that measured by the water surface ripple measurement device, andregistration between the obtained overwater object image and a reconstructed water surface ripple is relatively easy, and calibration quality of the overwater object image is improved.

The invention provides calibration equipment and method of a pressure sensor. The calibration equipment comprises a temperature setting unit, a pressure setting unit, a control module, an environmentdetecting module and a base, wherein the temperature setting unit is used for setting the temperature of a to-be-calibrated sensor; the pressure setting unit is used for setting the pressure of the to-be-calibrated sensor; the environment detecting module and the temperature setting unit are connected with the control module to detect and reflect the temperature parameter of the temperature setting unit in real time, and the environment detecting module and the pressure setting unit are connected with the control module to detect and reflect the pressure parameter of the pressure setting unitin real time; the base is used for supporting the to-be-calibrated sensor. By the calibration equipment and method, a calibration process is simplified, and calibration efficiency is increased.

The invention provides calibration equipment and method of a pressure sensor. The calibration equipment comprises a temperature setting unit, a pressure setting unit, a control module and an environment detecting module, wherein the temperature setting unit is used for setting the temperature of a to-be-calibrated sensor; the pressure setting unit is used for setting the pressure of the to-be-calibrated sensor; the environment detecting module and the temperature setting unit are connected with the control module to detect and reflect the temperature parameter of the temperature setting unit in real time, and the environment detecting module and the pressure setting unit are connected with the control module to detect and reflect the pressure parameter of the pressure setting unit in realtime. By the calibration equipment and method, a calibration process is simplified, and calibration efficiency is increased.

The invention discloses a disease prediction method and system based on medical big data. The method comprises the following steps: importing mass spectrum data of mainstream mass spectrum instrumentmanufacturers, and completing the conversion from original mass spectrum data of the manufacturers to a general data format; realizing automatic labeling and qualitative analysis of endogenous compounds in the mass spectrum through a metabolite compound database according to the spectrum information of the endogenous metabolites of the individual human body and a compound search matching algorithm; wherein the loading is used for effectively managing huge and complex human body metabonomics samples and carrying out data mining and modeling, and the loaded data types mainly comprise targeted and non-targeted metabonomics mass spectrum original data and labeling results; performing standardized cleaning, compound alignment and qualitative and quantitative analysis on complex multi-sample data, and performing correction by adopting a multi-class algorithm; and adopting a machine learning model training set algorithm with different types of mass spectrum data processing characteristics tocomplete the whole process of training, publishing and maintaining the user disease prediction model.

The invention discloses a lead crimping position corrector. The corrector comprises a main body frame, a pull spring, an upper movable plate, a jack, an upper pressure groove, a lower groove and a movable cushion block, wherein an upper beam of the main body frame is provided with the pull spring; the pull spring is connected with the upper movable plate; the jack is arranged on the upper part of the upper movable plate; the upper pressure groove is formed on the lower part of the upper movable plate; and the lower part of the main body frame is provided with the lower groove. A bend and deformed lead is arranged between two movable cushion blocks of the lower groove, so that correcting effect can be achieved under the action of a back pressure produced by operating the jack. The corrector is easy and convenient to operate because only the jack needs to be operated after a crimped and bent lead is placed in position, does not damage the lead or a crimping head, achieves high correcting quality and saves time and labor.

The invention relates to an auxiliary verification device for a hopper scale. The verification device is characterized in that: the verification device includes multiple weighing sensors used for bearing the weight of the entire device, and also includes a weighing platform horizontally disposed right below a hopper bin and capable of placing a weighing weight, the weighing sensors collect a weight signal through a sensor cable to a sensor gathering junction box, the sensor gathering junction box is connected to a weighing secondary meter through a weighing total cable, and the weight is displayed by the weighing secondary meter, and inspection of the hopper scale is achieved by increase and decrease of the weight of the weighing platform. The verification device enables the work efficiency to be improved, is also convenient to perform full-scale range verification check on a verification result, and runs in a steelmaking molten iron pretreatment workshop for many years, thus being obvious in effect.

The invention provides a calibration method and device for a CT image as well as a CT system. The method comprises steps as follows: arranging fixed type calibration pieces outside a channel area of a CT scanning device and inside a largest reconstruction area and storing theoretical values of the fixed type calibration pieces; collecting projection data of the fixed type calibration pieces and obtaining actual reconstruction images of the fixed type calibration pieces; and comparing the actual reconstruction images with the corresponding stored theoretical values and establishing a mapping function that calibrates the actual reconstruction images into theoretical values. According to the calibration method and device for the CT image as well as the CT system, the calibration quality can be effectively improved, the image calibration effect is enhanced, the reliability of the CT scanning device is improved, the maintenance cost is saved, and a high actual application value is obtained.

The invention relates to a cylindrical surface image correction method based on polynomial fitting. The cylindrical surface image correction method based on polynomial fitting comprises steps of setting a coordinate of a point on a standard image as (x,y) and a coordinate of a corresponding pixel point on a cylindrical surface bending image as (u,v), establishing a corresponding relation between the two coordinates, choosing at least six points of remarkable characteristics of the cylindrical surface bending image as control points to perform calculation according to a least square method, obtaining an aig and a big which are coefficient matrixes satisfying conditions when an error of the least square is a minimal value, establishing an image correction model, performing one-by-one point correction on the cylindrical surface bending image according to an established image correction model, and using a bilinear interpolation method to perform interpolation processing on the image after one-by-one point correction is finished so as to finish image correction of a cylindrical surface distorted image.

The invention relates to a bulging device for a special-shaped part; the bulging device is characterized by mainly comprising a framework, an operating platform and a feeding mechanism, wherein the operating platform is fixed on the framework, the feeding mechanism is arranged on the framework, and two or more than two bulging blocks, which can horizontally slide, are arranged on the operating platform; the bulging blocks form a bulging block component; the appearance of the bulging block component takes the shape of a special-shaped opening of the part; a conical hole is arranged in the center of the bulging block component and is matched with a center wedge block; and the center wedge is arranged on an output shat of the feeding mechanism. The bulging device for the special-shaped part, provided by the invention, has the advantages that the part is convenient to clamp and position and has good machining accuracy and high efficiency, and the bulging device can be suitable for multiple products through replacement of modules and appropriate adjustment.

The invention relates to the field of trimming and thermal calibration tools for front shafts, in particular to a trimming and thermal calibration tool for post-forging of a front shaft. The tool comprises an upper die base and a lower die base and further comprises a trimming device and a calibration device. The trimming device is arranged between the upper die base and the lower die base. The calibration device is located on one side of the trimming device. The other side of the trimming device is further provided with a pushing device for pushing a workpiece to the calibration device through the trimming device. One side of the calibration device is provided with a reset device for pushing the calibration device to be closed and opened. During usage, the upper die base moves downwards to drive the trimming device to trim the workpiece, and the trimmed workpiece is pushed into the calibration device through the pushing device. The tool has the advantages that the structure is simple, the layout is compact, trimming, calibration and straightening of the front shaft can be achieved through one oil press, the equipment input is small, operation is easy and convenient, the automation degree is high, and the production quality and efficiency of products are improved.

The invention discloses a system for detecting and correcting quenching deformation of gear rings through static pressure. The system comprises a detection unit, a loading and unloading unit and a correction unit, wherein the detection unit comprises a bracket platform, a spindle, a rotary platform and an electric control positioning device; the loading and unloading unit comprises a rotary material paw device, a to-be-detected material placing device and a qualified material placing device; the correction unit comprises a correction worktable, a fixed arc pressing block, a movable arc pressing block, an electric control jack and a displacement sensor. Through the system for detecting and correcting quenching deformation of the gear rings through static pressure, the operations of taking, placing, detecting and correcting workpieces can be automatically implemented in the detecting and correcting process; the system is high in detection operation efficiency, high in correction operation efficiency and low in labor intensity; the correction is implemented by controlling the electric control jack to push the movable arc pressing block apply the static pressure to the gear rings by using an industrial personal computer; the displacement sensor is used for detecting the position of the movable arc pressing block in the correction process; the problem of deformation to the gear rings caused by excessively correction of the gear rings can be avoided; the correction quality is higher; the correction operation efficiency is higher.

The invention belongs to the technical field of service robots, particularly relates to an active stereoscopic vision system calibration method, and aims to solve the problem that high-quality calibration is difficult to realize under the condition that the optical center of each camera in an active stereoscopic vision system deviates from a corresponding rotating shaft. The method comprises the following steps: acquiring a first image, a second image, a third image, a fourth image, a fifth image and a sixth image; obtaining relative poses of all cameras of the active stereoscopic vision system before and after rotation; acquiring a rotation vector corresponding to the rotation axis of each camera; in combination with the rotation vector and the rotation angle corresponding to the rotation axis of each camera, obtaining the pose of the rotation axis of each camera in the corresponding predefined initial position coordinate system; obtaining the relative pose of the first camera and the second camera at the initial position, and further obtaining the relative pose between the rotating shaft of the first camera and the rotating shaft of the second camera; and updating the external parameters of the active stereoscopic vision system on line. The calibration quality of the active stereoscopic vision system is improved.

The invention relates to an automatic calibration device for an eddy current liquid level meter. The automatic calibration device comprises a calibration rod, a fixed frame, a calibration plate and astepping motor, wherein the fixed frame is vertically mounted on a base and parallel to the calibration rod; the calibration plate is mounted at the bottom end of the calibration rod; the stepping motor is mounted at the upper part in the fixed frame; a vertical downward lead screw is connected onto an output end of the stepping motor; a lifting block in threaded connection is arranged on the leadscrew; a calibration rod clamp seat is connected with one side of the lifting block; the calibration rod is inserted and fixed in the calibration rod clamp seat; a scaleplate for calibration and measurement is vertically and fixedly mounted on the fixed frame. Under unified control of a liquid level secondary meter, one-key calibration as well as verification and re-check of calibration data is completed by the device, and calibration of an eddy current system is completed greatly and rapidly.

The invention provides a multipurpose flange correcting jig device which is simple, practical and light, can adapt to deformation correction of various structures and is capable of improving the correcting efficiency and quality. The multipurpose flange correcting jig device comprises a set of parallel edge strips which are equal in size; the middles of the edge strips are fixedly connected together by adopting a connection block; the edge strips are respectively provided with mounting holes which correspond in position; correcting hooks are respectively and symmetrically arranged on the mounting holes at both sides of each edge strip; cushion blocks which are equal in size are also arranged on the surfaces of the correcting hooks, which are contacted with a member which needs to be corrected; and the lower surface of the connection block is also provided with travelling wheels. According to the multipurpose flange correcting jig device provided by the invention, the deformation correction of various structures can be adapted; the correcting quality is improved; and traditional pure flame correction is changed, thus, the correcting time is reduced; and the work efficiency is increased.

The invention relates to the technical field of camera calibration and in particular discloses a single image camera calibration method based on compressed sensing. The method is just required to photograph a calibration plate once, and solves the optimal solution of a single image by using a compressed sensing reconstruction algorithm by setting qualification conditions for six unknown quantitiesin a underdetermined system of equations of the single image via a Zhang's planar calibration method, thereby greatly simplifying the process of solving the internal matrix and the foreign matrix ofthe single image. The used compressed sensing reconstruction algorithm is subjected to self loop optimization and high camera calibration quality and high calibration efficiency are achieved.

A method is provided for determining corrected acquisition geometries of projection images. The method includes providing a projection image dataset that has a plurality of projection images of an object under examination acquired by an acquisition device in different acquisition geometries. The method further includes determining a provisional acquisition geometry for each of the projection images by a first optimization method by minimizing a first cost function by varying the provisional acquisition geometry, wherein the first cost function is contingent on a plurality of consistency measures determined based on the provisional acquisition geometry for a respective pair of projection images. The method further includes determining the respective corrected acquisition geometry for each of the projection images by a second optimization method by minimizing a second cost function by varying the corrected acquisition geometries, wherein the second cost function is contingent on a measure for an image quality of image data reconstructed based on the projection images and the corrected acquisition geometries, and wherein, in a first iteration act of the second optimization method, the provisional acquisition geometries determined by the first optimization method are used as corrected acquisition geometries.

The invention discloses a speech translation text correction system, method and device and related equipment. According to the system, a source language text fragment corresponding to voice stream data collected by a client in real time is determined through a server, and the text fragment is sent to the client; and receiving the manually corrected first clause text sent by the client, determining a second clause text of the target language corresponding to the first clause text, and sending the second clause text to the client, the client collects voice stream data in real time and sends the voice stream data; and displaying the text segment, determining a first clause text, and sending the first clause text, and displaying the second clause text. By adopting the processing mode, the original text clause text is manually corrected along with the real-time speech recognition progress, and the manually corrected original text clause text is translated before one sentence is recognized, so that the translation text correction processing of clause granularity is realized; therefore, the correction efficiency and the correction quality can be effectively improved.

The invention relates to a temperature-measuring push-pull single-chip shutter structure for an infrared thermal imager, comprising a temperature-measuring chip, a shutter protection cover, blades, a solenoid valve, a solenoid valve control lead wire, a shift lever and a shutter shell. A focal plane window is provided on the protective cover and the shutter case, and a solenoid valve is installed on the shutter case, and the solenoid valve is connected to an external circuit board through a solenoid valve control lead wire, and the solenoid valve can drive the lever to reciprocate One end of the lever is connected to the valve stem of the solenoid valve, the other end is connected to the end of the blade, the blade can close or open the focal plane window, and the shutter protection cover is buckled with the shutter shell The temperature measuring chip is attached to the shutter protection cover, the structure is more compact and simple, the push-pull blade has better stability, and the temperature of the single blade is uniform. In addition, the temperature measurement chip is attached to the shutter protection cover to accurately read the blade. The temperature provides a reference for the temperature measurement function of the infrared thermal imager.

The invention provides an underwater imaging system, an underwater imaging device and an underwater imaging method. The underwater imaging device includes a casing, an object imaging device on the water surface, and a water surface ripple measurement device, and both the object imaging device on the water surface and the water surface ripple measurement device are located in the casing , the housing is provided with an optical window, the water object imaging device is used to obtain the image of the water object through the optical window, the water surface ripple measurement device is used to obtain the image of the reflection spot of the water surface corrugation corresponding to the imaging of the water object through the optical window, and the processor performs Water surface ripple reconstruction and image correction for water objects. In the present invention, the water surface object imaging device and the water surface ripple measurement device adopt a coaxial and common optical path structure, so that the water surface ripples transmitted by the imaging light of the water surface object imaging device are consistent with the water surface ripples measured by the water surface ripple measurement device, and the obtained image of the water object is reconstructed. The registration between the water surface ripples is easier, which improves the correction quality of the water object image.

The embodiment of the invention discloses a method for determining gain functions of a flat panel detector, an image correction method and an image correction device. The determining method comprisesthe following steps: acquiring a first dark field image and a first bright-field image of a full-size area, wherein the full-size area comprises a first area covered by X-rays and a second area not covered by the X-rays; determining a gain function of the first area based on the first dark field image and the first bright-field image; determining gain of pixel points in the second area based on gain of the edge pixel points adjacent to the second area in the first area; and determining a gain function of the full-size area based on gain of the pixel points in the second area and the gain function of the first area. According to the embodiment of the invention, the correction accuracy of gain functions is improved, and the image correction quality is significantly improved.

The invention discloses a laser-assisted calibration process for diesel engine assembly. The process comprises the following steps of 1) processing a guide sleeve, and ensuring that the inner diameter of the guide sleeve is matched with a laser emitter, and the outer diameter of the guide sleeve is matched with the inner diameter of an oil nozzle; 2) mounting the laser emitter on the guide sleeve, and connecting the guide sleeve and the laser emitter with the oil nozzle; 3) turning on the laser emitter, simulating an oil column emitted by the oil nozzle by a laser emitted by the laser emitter, and assisting debugging personnel to perform calibration and debugging by observing the condition of the laser emitted by the laser emitter; 4) adjusting the angle and direction of the oil nozzle, and ensuring that the laser on the oil nozzle directly irradiates into a piston cooling hole; 5) after debugging is completed, pulling out the guide sleeve and the laser emitter on the oil nozzle. The process is ingenious in design, the calibration process is simplified, the calibration time is shortened, and the calibration quality is improved.

The invention discloses a pipe orifice correction device capable of achieving rapid alignment. The pipe orifice correction device comprises a correction hydraulic mechanism, a rotary clamping mechanism, a lifting mechanism, a walking mechanism, a hydraulic pump station and a control cabinet. The correction hydraulic mechanism is connected to an installation plate of the lifting mechanism through the rotary clamping mechanism. The lifting mechanism is installed in the walking mechanism. According to the pipe orifice correction device, the flexible rotary clamping mechanism and a PLC automatic control system are adopted, a device body is provided with a plurality of gravity center lifting points, and it is effectively guaranteed that a correction jack rapidly and accurately finds a correction point; a flexible connector has a certain compensation effect on relative position deviation caused by the correction jack connected with the flexible connector in the correction process, the correction jack can be allowed to achieve automatic alignment to a certain degree, and it is guaranteed that the correction pushing direction is perpendicular to the pipe wall all the time; and a rotation mechanism can drive the correction jack to rotate at an angle of 360 degrees around the axis of a pipeline in a pipe orifice, the correction point can be conveniently, rapidly and accurately found, thecorrection working condition is effectively improved, the working efficiency is improved, the correction precision is guaranteed, and the correction quality is improved.

The invention provides a detection method and device for acoustic curve repair, equipment and a storage medium, and the method comprises the steps: obtaining an initial density curve, an initial acoustic curve, a natural gamma curve and a deep exploration resistivity curve, correcting the initial density curve according to the natural gamma curve and the deep exploration resistivity curve, and obtaining a corrected density curve; according to the natural gamma curve, the deep exploration resistivity curve and the corrected density curve, correcting the initial sound wave curve to obtain a corrected sound wave curve; and detecting the well according to the corrected acoustic curve. The density curve is firstly corrected, and then the corrected density curve is introduced into the correction of the acoustic curve, so that the correction quality of the acoustic curve can be effectively improved, a large amount of basic data is not needed, the method is simple and practical, and the economic cost and the time cost are saved.