22results about How to "Reduce manual measurement errors" patented technology

The invention discloses a quantitative recognition device for the number and size of bubbles at a rotating impeller of a multiphase pump. The quantitative recognition device comprises a two-phase flow experiment system, the multiphase pump, a high-speed camera, a light source and the like. The preprocessing and data analysis system and the deep learning system are arranged in the computer; the two-phase flow experiment system and the image acquisition system are electrically connected with the computer through lines. The invention further discloses a quantitative recognition method for the number and size of the bubbles at the rotating impeller of the multiphase pump. According to the method, the problems of low blistering recognition precision, low efficiency and large error caused by the existing manual measurement method are solved, and a reference method is provided for exploring the influence of gas distribution at the impeller in the multiphase pump on pump operation and optimizing design of the multiphase pump.

The invention belongs to the technical field of agricultural food detection, and particularly relates to a method for rapidly detecting the fatty acid content of Beijing ducks based on a near infrared spectrum technology, which comprises the following steps: selecting a sample and pre-treating the sample; collecting sample data by using a standardized collection method; removing abnormal samples; performing spectral data correction; standard normal variable transformation is used to eliminate baseline drift and random errors in the spectral data; dividing the data set into a training set and a test set according to a proportion of 7: 3 by using a sample set division method based on a joint X-Y distance; constructing an optimized extreme learning machine model, and training the optimized extreme learning machine model based on the training set; constructing an evaluation model, and verifying the detection effect of the optimized extreme learning machine model based on the test set; rapid detection of the fatty acid content of the Beijing duck is realized. The defects that an existing method is long in consumed time and lagged in detection result, and dangerous solvents need to be used are effectively overcome.

The invention provides a method and device for analyzing the number and size of bubbles in a gas-liquid multiphase pump, and relates to the technical field of hydraulic machinery, the method and device are applied to a system for measuring the number and size of bubbles in the gas-liquid multiphase pump, the measuring system comprises a high-speed photographing system, and the method comprises the following steps: acquiring a gas-liquid flow field image in the pump based on the high-speed photographing system; determining a plurality of target gas-liquid flow field images, and preprocessing the plurality of target gas-liquid flow field images; determining the boundary of each bubble in a plurality of bubbles based on the preprocessed target gas-liquid flow field image to obtain a detection result of a bubble contour, and performing calculation based on the detection result of the bubble contour to obtain a bubble contour pixel area of each bubble in the plurality of bubbles; and calculating the diameter of each bubble based on the bubble contour pixel area of each bubble in the plurality of bubbles, and determining the number of bubbles under each diameter. Through the method provided by the invention, the efficiency and accuracy of data analysis are improved.

The invention relates to the field of three-dimensional technology, in particular to a two-dimensional and three-dimensional synchronous delivery method and system based on three-dimensional design. The method comprises the steps of obtaining a formal scheme file according to project initial data and a design task book; establishing a preliminary three-dimensional model based on the formal scheme file, including establishing a project target height and an axis net, and establishing wall, door and window and roof project elements in combination with a parameterized design technology; the method comprises the steps that a preliminary three-dimensional model is utilized to preliminarily design a two-dimensional and three-dimensional delivery model, a construction drawing three-dimensional model is established according to the preliminarily designed two-dimensional and three-dimensional delivery model, a final two-dimensional and three-dimensional delivery model is established based on the construction drawing three-dimensional model, and three-dimensional model extension is conducted according to the final two-dimensional and three-dimensional delivery model. According to the method, the BIM collaboration platform and the block chain technology are combined, various information of the building can be obtained in real time in the digital management and operation and maintenance process, and an accurate basis is provided for decision making.

The utility model provides an adjustable supporting tool for assembling an offshore photovoltaic steel grid. The adjustable supporting tool comprises a height adjusting module, a fixing module, a telescopic module and a supporting module, wherein the fixing module, the telescopic module and the supporting module are sequentially connected from top to bottom. The fixing module is connected with an offshore photovoltaic steel grid; one end of the telescopic module is embedded into the supporting module and is detachably connected with the supporting module; the height adjusting module is connected with the telescopic module and used for adjusting the depth of the telescopic module embedded into the supporting module. The supporting module is used for supporting the fixing module and the telescopic module. According to the utility model, a modularized combined structure of the fixing module, the telescopic module, the height adjusting module and the supporting module is adopted, and the depth of the telescopic module embedded into the supporting module is adjusted through the height adjusting module, so that the levelness and the butt joint precision during the assembly of the steel net rack are ensured, and the assembly operation of the offshore photovoltaic steel net rack can adapt to the tide level change; manual measurement errors are reduced, and the assembling efficiency and quality are greatly improved.

The utility model discloses an auxiliary welding device for a battery bracket of a new energy electric bus. The auxiliary welding device aims at solving the problems that traditional welding positioning is difficult, clamping is not stable, and universality is poor. The device comprises a bottom, a bottom plate groove is formed in the bottom, and a threaded rod and a guide rod in the groove are connected with a rotating motor to drive a movable vertical plate and a fixed vertical plate to adjust the distance. Aligning groove holes are formed in the opposite faces of the two vertical grooves, a limiting clamp assembly is arranged above to clamp a workpiece, and an adjusting assembly is installed in the middle vertical groove. The limiting clamp assembly controls a clamp lead screw through a limiting motor, and precise clamping is achieved. And the adjusting assembly integrates various transmission structures, so that the movable plate can be flexibly adjusted in a three-dimensional space. An arc-shaped shallow groove in the movable plate assists in positioning, a laser transmitter and a laser receiver on the lower surface are arranged in a crossed mode, and position deviation is monitored in real time and calibrated. The device is accurate in positioning, stable in clamping and high in universality, the welding quality and production efficiency of the battery bracket are effectively improved, and development of the new energy electric bus manufacturing industry is promoted.

The utility model belongs to the technical field of steel processing, and particularly relates to a profile steel sample fixing clamp device. As a sizing clamp, the section steel sample sawing time can be shortened, and it can be ensured that the sawing size meets the requirement of a full-inspection sample. Comprising a profile steel fixing clamp device body, the profile steel fixing clamp device body comprises a horizontal fixing table, one end of the fixing table is fixedly connected with an L-shaped support, the other end of the fixing table is provided with a movable table capable of stretching out and moving relative to the fixing table, the height of the top face of the movable table is consistent with that of the top face of the fixing table, and the movable table and the fixing table jointly form a profile steel containing table; a plurality of sizing clamping grooves for inserting sizing plates are formed in the top surface of the fixed table; when the profile steel is placed on the profile steel placing table, the profile steel is kept horizontal, and one end of the profile steel abuts against the positioning ruler in the positioning clamping groove. A first rectangular boss is arranged at the bottom of the movable table, and a second rectangular boss is arranged at the bottom of the fixed table. A pressing piece is arranged at the top of the L-shaped support and used for pressing profile steel on the profile steel placing table.

The invention belongs to the technical field of instrument related equipment, and particularly relates to a measuring instrument and a measuring method for measuring the thickness of a transparent object based on microscopic imaging, and the measuring instrument comprises a laser incidence mechanism which is used for emitting laser; the to-be-measured sample is used for reflecting the laser, and the included angle between the vertical plane where the to-be-measured sample is located and the incident direction of the laser is 45 degrees; the multiplying power amplification mechanism is used for amplifying the distance between the two light spots presented on the sample to be detected; and the imaging analysis system is used for measuring the distance and recording an image. The thickness measuring instrument can be used for measuring the thickness of a sample, the surface of the sample does not need to be contacted, damage and pollution to the sample are avoided, the precision is high, the operation is simple, the manufacturing cost is low, and wider development of the thickness measuring instrument becomes possible.

The utility model provides a slump detection device for engineering detection, which comprises a bottom plate, the top end of the bottom plate is fixedly connected with a storage box, the inner side of the storage box is provided with a slump cone which is vertically arranged and is hollow inside, the outer side of the slump cone is fixedly connected with a horizontally arranged fixed rod, and the fixed rod is fixedly connected with the bottom plate. One side of the storage box is provided with a driving cylinder which is vertically arranged and fixedly connected to the top end of the bottom plate, the top end of the driving cylinder is fixedly connected with a rotating motor, the output end of the rotating motor is fixedly connected with a lead screw which is vertically arranged and located on the inner side of the driving cylinder, and the bottom end of the lead screw is fixedly connected with a bearing. Through the arrangement of the storage box, the slump cone, the fixing rod, the driving cylinder, the rotating motor, the lead screw, the bearing, the threaded cylinder, the fixing plate, the fixing ring, the passing groove and the fixing groove, the slump cone is lifted up instead of manual work, and the situation that detection fails due to shaking when the slump cone moves upwards can be prevented.

The invention discloses a rapid ordering method for special-shaped hotel guest room decoration plane materials. The method comprises the following steps: counting room categories; scanning point cloud data; drawing room contour data; room size generality carding is carried out; room finish surface net size fixed value and variable rule making is carried out; a line drawing is drawn based on contour and target real size data; rapid decoration modeling is carried out based on BIM; the special-shaped hotel room decoration ordering method has the beneficial effects that the efficiency and precision of special-shaped hotel room decoration ordering can be greatly improved, manual measurement errors are reduced, the specification and size consistency of decoration materials is ensured, and a reliable method and tool are provided for rapid and efficient decoration of special-shaped hotel rooms; in addition, improvement and adjustment can be carried out according to actual requirements, and point cloud scanning precision, a target setting method, BIM software selection and the like are optimized according to different building structure and decoration requirements so as to adapt to wider application scenes.

The invention relates to a method for automatically detecting the profile contour of a thermal protection component, and solves the problems that the manual detection efficiency is low and a thermal protection coating on the surface of a projectile body is easily damaged at present. An automatic turntable for placing the thermal protection component is designed, a measuring head mounted on a calibration mechanical arm is used for automatically scanning and shooting the appearance profile of a product, an automatic detection path of the profile of the thermal protection component is determined by adjusting the angle of the turntable and the pose of the mechanical arm, and the scanning pose of the mechanical arm is solidified by programming; subsequent thermal protection components of the same type do not need to be calibrated again, product profile detection is completed according to the calibration path and procedure, data analysis, a production distribution diagram and a measurement report are automatically conducted according to the model, and rapid detection of the profile tolerance, the gap and the order difference of the product is achieved. A manual measurement mode is replaced, the product only needs to be subjected to point pasting once for programming, subsequent products do not need to be subjected to point pasting, damage to the appearance of the thermal protection product and manual measurement errors are reduced, the labor and time cost is reduced, and the production efficiency is improved.

The invention discloses a deep groove concrete pouring liquid level real-time monitoring device and a use method, a mounting frame bears an electric capstan, an electronic control system and a tension sensor, a detection head is suspended at the junction of a concrete liquid level and a slurry mixing layer, and a steel wire rope is respectively connected with the detection head and the electric capstan. The tension sensor monitors tension changes of the steel wire rope in real time, and the electronic control system achieves automatic tightening by judging the loosening state of the steel wire rope. When the concrete liquid level rises, the detection head floats upwards to loosen the steel wire rope and the tension is lower than a set threshold value, the electronic control system drives the electric capstan to automatically tighten the steel wire rope to track the concrete liquid level, and the real-time liquid level height is converted through the displacement of the steel wire rope; dynamic tracking of the liquid level is achieved through tension closed-loop feedback, the defects that a traditional manual feeler lever sensing monitoring method is greatly interfered by a slurry mixing layer and depends on manpower are overcome, the functions of slurry adhesion resistance, automatic adjustment and abnormal alarm are achieved, and the deep groove pouring construction quality and efficiency are remarkably improved.

The invention relates to the technical field of image processing, in particular to a sock plate making file intelligent generation method based on image processing. Front and back standard images of socks are obtained, image preprocessing is performed, and the contrast of different areas is enhanced; and positioning the rib top position by using a texture analytic hierarchy process, and carrying out progressive boundary adjustment on the edge contour to obtain an accurate rib top position. And segmenting and cutting the positive and negative standard images of the sock by using an automatic threshold segmentation method, and reserving a sock leg area. Brightness difference detection is carried out on the sock leg area, the rough contour of the sock leg is extracted, the local curvature of the rough contour is tracked, and the contour shape of the sock leg is adjusted. And correcting the shape deviation of the sock leg contour to obtain a front and back sock leg segmentation image, dividing the front and back sock leg segmentation image into a plurality of sub-regions, performing region adjustment according to the feature points of each sub-region contour, and deforming the whole region to obtain a front and back sock leg rectangular image. According to the method, more accurate rib top positions and sock leg outlines can be obtained, and then more accurate sock plate making files are obtained.

The utility model relates to the technical field of leveling measurement, in particular to a supportable ruler pad and leveling rod integrated device which comprises a leveling rod body, a supporting assembly is connected to the leveling rod body, the supporting assembly is used for supporting the leveling rod to keep horizontal during measurement, and the supporting assembly comprises an inclined strut connecting rod and an inclined strut connecting rod, the support is connected with the leveling rod body through a sliding module and is used for supporting the whole leveling rod body; the longitudinal connecting rod is connected with the inclined strut connecting rod and is connected with the leveling rod body through a base supporting rod to form a triangular stable structure to support the whole leveling rod body; the storage handle is connected between the leveling rod body and the base supporting rod; the device is simple in structure, convenient to operate, convenient to carry and suitable for measurement work in various scenes; and meanwhile, a stable triangular supporting structure can be realized, the manual measurement error is effectively reduced, and the working efficiency is improved.

The invention provides a measuring system and a measuring method for external inspection of a spaceflight pressure storage tank, the measuring system comprises a rotation supporting platform and an omnibearing measuring mechanism located at one side of the rotation supporting platform, the rotation supporting platform is provided with a first rotation driving device and a tank body bracket installed on the first rotation driving device; the tank body bracket is provided with an adjustable clamp for fixing the spaceflight pressure storage tank; the omni-directional measurement mechanism comprises an X-axis movement mechanism, a Y-axis movement mechanism and a two-axis turnover mechanism, the Y-axis movement mechanism is installed on the X-axis movement mechanism in a sliding mode in the X-axis direction, and the two-axis turnover mechanism is installed on the Y-axis movement mechanism in a sliding mode in the Y-axis direction; and the two-shaft turnover mechanism is used for driving the tank body measuring equipment to do up-down pitching swing and do circumferential rotation along the axis. Through omnibearing and multi-angle automatic pose control, comprehensive detection of the spaceflight pressure storage tank is realized, and comprehensiveness and reliability of detection are ensured.

The utility model relates to a measuring control system suitable for deepwater rock-socketed steel pipe pile construction. The measuring control system comprises a pile driving barge instrument support, a software system, a measuring unit and a terminal control assembly which are installed on the pile driving barge instrument support. The measuring unit comprises GPS equipment and a clinometer, the clinometer performs data transmission with the control assembly through a communication line terminal, and the terminal control assembly is connected with the measuring unit through wireless communication signals; the pile driving barge is provided with a storage mechanism used for storing the software system. According to the measurement control system suitable for deepwater rock-socketed steel pipe pile construction, traditional manual prism centering rod measurement is replaced with GPS automatic measurement and monitoring, the construction efficiency is low, measurement errors are likely to be generated, the system can be used for monitoring and positioning the position of a pile driving barge in the pile driving and drilling process, automatic measurement and monitoring are achieved, and the construction efficiency is improved. Related errors of manual measurement are reduced, the measurement precision is improved, the instrument turnover utilization rate is high, and engineering cost is reduced and measurement efficiency is improved.

This invention discloses a method for quickly aligning the coordinate system of a fixture in a shell-type machining center: Using the coordinates of the machining center as a reference, the coordinates of the fixture's B-axis reference point are measured, and the fixture's B-axis compensation angle is calculated using these coordinates. The fixture position is adjusted according to the B-axis compensation angle, and the coordinates of the fixture's locating pin are measured. The fixture's A-axis compensation angle is calculated using these coordinates. The fixture position is adjusted again based on the B-axis and A-axis compensation angles, and the coordinates of the fixture's support rod are measured. The coordinates of the fixture's X-axis origin are calculated using these coordinates. The fixture coordinate system is then generated using the B-axis compensation angle, A-axis compensation angle, locating pin coordinates, and X-axis origin coordinates. This invention significantly improves the alignment efficiency of the fixture coordinate system, saves debugging time, and reduces manual measurement errors.

The utility model relates to the technical field of asphalt mixture rut tester equipment, in particular to an asphalt mixture rut tester capable of accurately testing the wheel pressure area, which is characterized in that a vision measurement device comprises a bottom plate and a fixing support arranged on one side of the bottom plate and used for fixing a test wheel; a force sensor and a supporting plate arranged on the upper portion of the force sensor are arranged in the center of the bottom plate, the center of the supporting plate and the center of the fixing support are located on the same axis, and a first camera located on the fixing support is arranged at the position opposite to the center point of the supporting plate in the longitudinal direction. A second camera located on the bottom plate is arranged at the position opposite to the center point of the supporting plate in the transverse direction, a plurality of light-emitting plates are arranged on the periphery of the bottom plate, and a light shield is further arranged on the bottom plate. According to the utility model, the test result is more accurate, and the problem that the measurement result is not accurate enough due to data error in the asphalt mixture rut test is solved.

The utility model discloses a flexible soft head performance testing device. The device comprises a lead screw transmission mechanism, a clamping induction mechanism and a supporting frame, the lead screw transmission mechanism is connected with an electric lead screw through a servo motor, the electric lead screw is connected with an electric lead screw nut, the electric lead screw nut is fixedly connected with a movable plate, and the electric lead screw rotates and is converted into lifting motion of the movable plate through the electric lead screw nut; the bottom end of the movable plate is connected with an upper clamping jaw, a pressing head and an ejector pin, the clamping sensing mechanism comprises a base, a sliding block is arranged in the base, a pressure sensor and a lower clamping jaw are installed on the sliding block, and the sliding block is connected with a hand-cranking lead screw and is adjusted through a hand wheel at one end of the base. According to the utility model, tension detection and pressure detection are integrated, detection is fast, and measurement is accurate.

The invention discloses a PVD magnetron magnetic field automatic scanning device and method, the magnetic field automatic scanning device comprises a PVD magnetic circuit module, the PVD magnetic circuit module is connected with a servo motor and can be driven by the servo motor to rotate, a linear motor module is arranged above the PVD magnetic circuit module, and the linear motor module is connected with the servo motor. A Teslameter probe is arranged on the linear motor module, the Teslameter probe can do translational motion along the linear motor module, and a magnetic circuit shielding cover is arranged below the Teslameter probe and surrounds the PVD magnetic circuit module. The PVD magnetron magnetic field automatic scanning device and method provided by the invention have the advantages of high measurement efficiency, high precision, small error, low cost, strong adaptability and the like.

The invention relates to a power transmission line ground wire electrical safety early warning method and device. The method comprises the steps of obtaining a ground wire photo on a power transmission line; acquiring a space coordinate of a target point from the guide ground wire picture; converting the space coordinates into plane coordinates; in combination with a preset parabolic equation of the ground wire, solving to obtain a target parameter; based on the first key point plane coordinate and the second key point plane coordinate, combining a preset hanging point connecting line equation to obtain a connecting line slope of the hanging point connecting line equation; after deriving the parabolic equation, taking a connecting line slope as a function value, and combining with the target parameter to obtain a tangency point abscissa; according to the tangency point abscissa, combining the parabolic equation of the ground wire and the hanging point connecting line equation to measure the tangency point sag of the ground wire of the power transmission line; and based on the pre-acquired longitude and latitude and tangency sag of the crossing point below the ground wire of the power transmission line, measuring the crossing distance between the ground wire and the crossing point below the ground wire. The method has the effect of improving the measurement precision and the measurement efficiency.

The invention provides a construction inspection batch metering system and method based on three-dimensional laser scanning, and the method comprises the steps: obtaining the three-dimensional data of airport construction based on a three-dimensional laser scanning technology, carrying out the coding of the three-dimensional data based on the attributes of the airport construction, obtaining a data coding identifier, obtaining a batch inspection standard, and obtaining an inspection coding identifier, the method comprises the steps of establishing a batch inspection process based on a data coding identifier and an inspection coding identifier, performing metering rule introduction on an airport construction model based on the batch inspection process to obtain an airport construction metering model, and performing batch inspection metering of airport construction by utilizing the airport construction metering model based on a metering task. According to the technical scheme, the airport construction three-dimensional data of the airport construction area is rapidly obtained, manual measurement errors are reduced, the construction efficiency is improved, the metering efficiency and precision are improved by comparing scanning data in different periods, manual intervention and errors are reduced, and therefore the engineering cost and risks are better controlled.