335 results about "Diameter measurement" patented technology

The invention discloses a laser scanning optimization system for high-precision ellipticity and diameter measurement, and relates to the technical field of cylindrical workpiece geometric dimension measurement. Comprising a laser contourgraph assembly, the laser contourgraph assembly comprises four laser contourgraphs, the four laser contourgraphs are arranged in the circumferential direction of the cross section of a to-be-measured workpiece at equal intervals, the included angle between every two adjacent laser contourgraphs is 90 degrees, and the laser contourgraphs are used for synchronously collecting contour point cloud data of the surface of the to-be-measured workpiece; and the data acquisition module is used for receiving and summarizing the contour point cloud data. The four laser contourgraphs are arranged at equal intervals in the circumferential direction of the cross section of the workpiece and collect synchronously, so that the problems that a traditional single laser module is incomplete in rotary scanning coverage and has timeliness deviation are solved; and the point cloud processing module improves the condition of insufficient point cloud processing refinement through splicing, direction correction, section extraction, adaptive region division and arc length interception processing.

There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

The invention provides a branch diameter real-time measurement method and system based on a depth camera, and relates to the technical field of data processing, and the method comprises the steps: extracting a skeleton center line based on a final contour, dynamically laying measurement points along a skeleton line, and calculating a unit normal vector, scanning the contour boundary along the normal direction to determine the intersection point coordinates of the normal and the contour; calculating three-dimensional space coordinates according to the intersection point coordinate set and the corresponding depth value to obtain a section diameter measurement value; and on the basis of the section diameter measurement value, real-time smoothing processing is carried out through an exponential weighted moving average filtering algorithm for dynamically adjusting parameters, instantaneous errors are eliminated in combination with an anomaly detection mechanism, and a smoothed diameter data stream is output. The accuracy of contour extraction and the practicability of the measurement method are improved.

Disclosed is a workpiece diameter measurement method including the steps of: measuring coordinates of a point P that is on an outer circumferential surface of a cylindrical workpiece that is supported such that a rotary axis of a main spindle of a machine tool and a central axis of the cylindrical workpiece coincide with each other, the coordinates having a maximum or minimum coordinate in a first direction that is orthogonal to the rotary axis; calculating a distance D2 in the first direction between the point P and a reference point Q that is a point at which a distance D1 in the first direction from the rotary axis is known; and calculating a workpiece diameter of the cylindrical workpiece based on the distance D1 and the distance D2.

The invention relates to the technical field of steel wire rope state detection, in particular to a steel wire rope diameter measuring method and system based on event compensation correction. According to the technical scheme, the system comprises an imaging module, a boundary initial extraction module, a dynamic motion estimation module, a dynamic correction compensation module and a diameter calculation module. The imaging module comprises a traditional camera, an event camera, an optical component, a synchronous triggering device and a spectroscope. The traditional camera is used for collecting frame images of the steel wire rope. According to the method, on the basis of complementary advantages of an event camera and a traditional camera, systematic measurement deviation under the dynamic working condition is solved from the mechanism through an event-driven dynamic geometric compensation model, and quasi-static imaging dependence is broken through. The method does not need extra constraint or increase of frame rate, control cost and hardware complexity, avoids the problems of reduction of signal-to-noise ratio and the like, realizes high-precision stable measurement under high-speed and vibration working conditions, adapts to online monitoring of multiple industrial scenes, and is remarkable in practicability and application value.

The invention discloses a laser scanning type overhead conductor health detection system and method, and relates to the technical field of power equipment detection, and the method comprises the steps that a laser scanning module scans the contour of an overhead conductor according to a laser scanning line, detects the environmental interference, and corrects the scanning track of the laser scanning line in real time based on the environmental interference information; acquiring wire scanning data; the data processing module extracts wire contour data based on the wire scanning data, fits a wire diameter according to the wire contour data, and matches a standard wire diameter library to obtain wire diameter data; and the data analysis module calculates the wear rate according to the wire diameter data of the wire, evaluates the health state of the wire in combination with the multi-element wire information, and obtains a health evaluation result. According to the invention, the track deviation of the laser under environmental disturbance can be compensated in a complex scene, the lead diameter measurement precision is improved, the health state of the lead is evaluated by fusing the lead diameter data with the multi-element lead information, and the reliability of the lead health state evaluation result is improved.

The invention discloses a blood vessel inner diameter correction method and device based on an X-ray total attenuation conservation principle and a storage medium, and belongs to the technical field of medical image processing. The core of the method is to discover and utilize the total net attenuation of a blood vessel filled with a contrast agent in an actual motion state and the total net attenuation of the blood vessel in an ideal static state to be kept in conservation. The method comprises the steps that an angiography image is acquired, and a target area and an initial inner diameter measuring line are determined; calculating the gray scale decline amount and the maximum value of each pixel of the line; on the basis of the conservation principle, the inner diameter of the blood vessel in an ideal state is inversely calculated through the formula that the inner diameter is corrected to be equal to sigma [(delta Ii / delta Imax) * Li]. Furthermore, based on the same principle, the method can be expanded and applied to correction of the two-dimensional contour of the target blood vessel. According to the method, errors caused by motion artifacts and resolution limitation are fundamentally compensated through a volume measurement method based on integration and distribution, and the method is particularly suitable for accurate measurement of severe stenosis blood vessels.

The invention discloses a circle diameter measurement error compensation method based on a CCD image sensor. The method comprises the following steps: acquiring a digital image of an object to be measured; performing dynamic light intensity evaluation and correction on the digital image to generate a corrected digital image; generating an image edge coordinate point set for the corrected digital image through a preset edge compensation model; obtaining candidate points based on the image edge coordinate point set; based on the candidate points, generating a fitting circle through circle parameter fitting; and based on the fitting circle, through a preset calibration proportionality coefficient, calculating and obtaining an actual circle radius. Through dynamic light intensity evaluation and correction, the current light intensity parameter can be evaluated and adaptively adjusted to improve the contrast ratio of a real edge, and meanwhile, the real edge is accurately positioned through a preset edge compensation model and a deep learning mode, so that the circle diameter measurement error of a transparent object is reduced.

The invention relates to an intelligent edible mushroom cap diameter measuring method for robot picking. The method comprises the following steps: acquiring individual positions of edible mushrooms by adopting a deep learning target detection algorithm, and cutting a single edible mushroom image; edible mushroom cap boundary fitting is carried out on an image of a single edible mushroom, by adopting the core of the method based on segmented screening and multi-criterion scoring ellipse fitting, color quantization and contour extraction processing are firstly carried out on the image, then noise filtering is adopted and segmented screening is carried out on fitting segments, then a segmented screening ellipse fitting strategy is set, and the image of the edible mushroom cap is obtained. Fitting a plurality of candidate ellipses, screening an optimal ellipse by using a multi-criterion scoring mechanism, and returning ellipse long axis information as diameter information; and fusing the depth information to complete coordinate conversion from the pixel to the physical size, and outputting a diameter measurement result. The method is high in measurement precision, has good adaptability and stability in dense growth and mutual shielding environments, and can effectively solve the technical problem of automatic measurement of the diameter of the edible fungi in a complex cultivation environment.

The invention discloses a laser type constructional engineering pipeline diameter measuring instrument and a measuring method, and belongs to the technical field of pipeline diameter measurement. The device comprises two first rectangular pipes, one first rectangular pipe is fixedly connected with a first laser range finder and a mounting block, and the other first rectangular pipe is fixedly connected with a second laser range finder; a first reflector matched with the first laser range finder is fixed on one of the rectangular rods; the method comprises the following steps: S1, holding a U-shaped handle by hand to drive the whole device to move, so that a semi-cylindrical block is propped against the inner wall of a to-be-detected pipeline; the device can measure the inner diameters of various types of pipelines, the inner wall of the pipeline can be measured only by abutting the semi-cylindrical block against the inner wall of the pipeline and extruding the whole device until the rectangular rod abuts against the inner wall of the pipeline, the device does not need to be adjusted, and compared with the prior art, the working efficiency is greatly improved, the measurement difficulty is reduced, and the measurement accuracy is improved. And whether the pipeline is deformed or not can be quickly measured.

The utility model relates to a reinforcing steel bar size detector, which comprises a detection plate, a diameter measuring plate and a length measuring plate, a front baffle plate is integrally arranged at one end of the detection plate, the diameter measuring plate is slidably connected inside the detection plate, and a sliding plate slidably connected inside the front baffle plate is arranged on the outer wall of one side of the diameter measuring plate. The front baffle is rotatably connected with a bidirectional screw rod through a bearing, the sliding plate sleeves the bidirectional screw rod in a threaded manner, and the diameter measuring plate sleeves the detection plate in a sliding manner. According to the radius measuring structure, the two sliding plates can move towards the reinforcing steel bar in the semicircular placing groove at the same time, the diameter of the reinforcing steel bar can be measured conveniently, the diameter measuring function is achieved, the elastic force of the spring of the length measuring structure can push the length measuring plate to move towards the end of the reinforcing steel bar in the semicircular placing groove, and the length of the reinforcing steel bar can be measured; therefore, the detector has the functions of measuring the diameter and the length at the same time, is multifunctional, and is more convenient to use.

The invention relates to the technical field of industrial visual inspection, in particular to a high-speed enameled wire surface defect detection system and method. The real-time diameter measuring module adopts a laser diameter measuring instrument to measure the diameter of the enameled wire in real time, and the precision reaches + / -0.001 mm; the high-voltage pinhole detection module is used for verifying electrical defects; and a control processing module. Optimized combination of a high-speed line-scan digital camera and an optimized Yolo11 model is realized by innovatively fusing visual detection, triple technologies of optical measurement and physical detection are realized, full-dimensional quality verification and multispectral imaging are combined with the optimized Yolo11 model to improve the detection rate of 0.1 mm-level pinholes and scratches, and meanwhile, a laser diameter measuring instrument is integrated to feed back the line diameter in real time, so that the detection rate of the 0.1 mm-level pinholes and scratches is improved. In addition, high-voltage pinhole electrical defect signals are aligned with visual results in a space-time mode, and the problem of high-speed misinformation is solved.

The invention relates to the technical field of rubber detection, in particular to a rubber part quality detection device and a detection method thereof. The device comprises a detection index plate, a support and two lifting devices are sequentially arranged on the periphery of the detection index plate, a laser diameter measuring sensor is arranged on the support, and the laser diameter measuring sensor is arranged above a vibration disc feeder in a suspended mode and used for measuring the diameter of a passing rubber part. A top view camera and a side view camera are connected to the lifting device, an annular lamp is fixedly arranged on the periphery of a lens of the top view camera, a supporting rod is fixedly connected to the lifting device corresponding to the side view camera, and a parallel backlight lamp is arranged at the end of the supporting rod; light shields are arranged on the peripheries of the annular lamp and the parallel backlight lamp, baffles are movably arranged in the light shields, and driving assemblies are connected between the baffles and the light shields; the driving assembly adjusts the rotation angle of the laser diameter measuring sensor according to detection data of the laser diameter measuring sensor, drives the baffle to move in the light shield, and adjusts the local shielding range of the baffle to the light emitting area of the corresponding light source.

The present invention relates to the field of diameter measurement, and in particular to an infrared laser diameter detection device and a detection method for a wire rope, comprising a mounting seat, on which is connected a measuring component for measuring the diameter of the wire rope; the present invention realizes support and limitation of the wire rope to be measured through the cooperation between two mounting ring plates and corresponding limiting rollers limited on the two mounting ring plates, and then realizes the effect of non-contact measurement of the diameter of the wire rope through the cooperation of a laser emitting end and a laser receiving end correspondingly connected to the two mounting ring plates. At the same time, through the cooperation of the limiting roller and the buffer spring, the friction and vibration during the relative sliding of the wire rope and the shell are effectively reduced, thereby improving the measurement accuracy.

The invention relates to the technical field of cable processing, in particular to a coiling machine with a remote temperature control and diameter measurement module, which comprises a main frame and a drum mounted on one side of the main frame, and a guide wheel module is arranged on the outer side of the main frame at a cable feed port. According to the looping machine with the remote temperature control and diameter measurement module, a plurality of embedded external guide rails and embedded internal guide rails are arranged on the outer side face of a disc, modularized inner side supporting covers are installed on lead screw adjusting assemblies in the embedded external guide rails, the looping machine can adapt to different looping modes, and operation is convenient; a temperature control module with a communication function is installed on a lead screw adjusting assembly in an embedded type built-in guide rail and can be matched with a first arc-shaped guide pipe, a second arc-shaped guide pipe and a split type annular liquid guide pipe on the back of a disc tool to rapidly pull away high temperature at different positions, and synchronous operation can be achieved in the equipment running process; not only can directional temperature control be achieved, but also energy consumption and waste can be reduced.

The invention discloses a power transmission line conductor diameter measurement method and system based on an unmanned aerial vehicle image, and the method comprises the steps: obtaining a multi-view image of a power transmission conductor through an unmanned aerial vehicle, and recording the shooting pose and distance information at the same time; carrying out distortion removal and geometric correction processing on the multi-view image to obtain the pixel width and parallax of the lead, and calculating a first estimated value of the lead diameter and the uncertainty of the first estimated value according to the parallax; obtaining a reference image containing the wire and the insulator through the unmanned aerial vehicle, identifying the model of the insulator and obtaining the real size of the insulator, and calculating a second estimated value of the wire diameter and the uncertainty of the second estimated value through the real size of the insulator according to the proportional relation; and carrying out consistency check on the first estimation value and the second estimation value, and obtaining a fusion line diameter result by adopting a weighted fusion algorithm. According to the invention, through fusion of three-dimensional measurement and reference object inference, high reliability and accuracy of wire diameter measurement are still maintained in a complex environment, and an efficient and safe solution is provided for power transmission line inspection.

The invention belongs to the technical field of cable diameter detection, and particularly relates to a laser diameter measuring device for cable measurement, which comprises a guide rail base and a control cabinet arranged on one side of the guide rail base, and further comprises a detection shell, the detection shell is arranged above the guide rail base, clamping units are arranged on the two side walls of the detection shell, and the clamping units are arranged on the guide rail base. The clamping unit is used for fixing a cable, and the cable penetrates through the interior of the detection shell; the laser detection unit is installed in the detection housing and is used for carrying out full-circumference diameter detection on the cable. The cable diameter is continuously detected in a sectional type follow-up detection mode, the influence of cable vibration on laser detection precision is effectively reduced, the accuracy and stability of a detection result are improved, meanwhile, diameter detection can be performed on the cable from different directions, the comprehensiveness of cable detection is effectively improved, and the detection efficiency is improved. And the influence of impurities such as dust, water and the like on the laser diameter measurement precision can be reduced.

This utility model discloses a transmission shaft outer diameter measuring instrument, relating to the field of outer diameter measurement technology. It includes a housing, control panel, mounting plates, long rods, and electronic components. Multiple sets of mounting plates and long rods are vertically distributed and fixed to form a frame, which is divided into a left frame and a right frame. In this utility model, the control panel controls the electronic components to start a servo motor, causing a lead screw to rotate inside a lead block. This causes the lead block to move a laser rangefinder sensor along the length of a smooth rod. The control panel, through the electronic components, controls the laser rangefinder sensor to emit continuously modulated laser light. The distance is calculated by measuring the phase difference between the emitted and reflected light. The distance between the laser rangefinder sensor and the transmission shaft remains constant, and the rotating shaft maintains its rotation. Measurements are performed, and the measurement data is processed by the electronic components and displayed on the control panel's display screen in the form of a line graph, thereby achieving non-contact quantitative detection of the transmission shaft.

This invention discloses a device for measuring the roll diameter of an uncoiler head based on a laser rangefinder, belonging to the field of roll diameter measurement technology. The device includes an uncoiler, a lifting machine, an uncoil assembly, an automatic cleaning and detection assembly, and a roll diameter measurement and control system. The detection assembly integrates a laser rangefinder sensor and a blowpipe. The roll diameter measurement and control system includes a data acquisition module, a data analysis and processing module, and an execution control module. The data acquisition module completes multi-source data acquisition and analog-to-digital conversion. The data analysis and processing module performs data filtering, roll diameter calculation, and sensor contamination determination. The execution control module triggers automatic blowpipe cleaning, adjusts the tension and speed of the uncoiler in conjunction with the uncoiler, and coordinates the lifting machine's movement. The blowpipe can perform graded cleaning according to the contamination level. This device eliminates dust interference with detection, ensures stable roll diameter measurement data, and achieves automatic cleaning of the laser rangefinder sensor, constant tension closed-loop control of the uncoiler, and coordinated operation of the equipment.

The invention provides a portable measuring device for forestry investigation and planning, and mainly relates to the technical field of forestry measurement. A portable measuring device for forestry investigation and planning comprises a surrounding telescopic fixing device, a surrounding moving device, a diameter at breast height measuring device, a crown diameter measuring device and the like. Compared with the prior art, the device has the advantages that by arranging the surrounding structure capable of stretching and retracting in a large range, self-adaptive fixing is conducted on large-span trees with different diameters at breast height, the device can be opened and closed through the hinge structure, and therefore the device can be operated by a single person to conduct measurement around the trees; the equipment can be contracted into a small size in a storage state so as to improve the portability of the equipment, a measuring device capable of moving in a surrounding mode is arranged on the periphery of the surrounding structure of the equipment, the end of the measuring device can be attached to the surface of a tree through elastic extension of the measuring device, and surrounding movement around the tree is achieved. And combining data acquired by the sensor with position data of the measuring device on the surrounding structure to generate section contour data of the tree diameter at breast height position.

The present application relates to the technical field of measurement, and especially relates to a kind of pelletizing diameter measurement method.The method comprises the following steps: pelletizing diameter data acquisition and ball quantity acquisition are carried out by the pelletizing diameter detection device preset on pelletizing disc, and pelletizing diameter data and ball quantity data are obtained; qualified ball mass is calculated according to the pelletizing diameter data, and qualified ball mass data is obtained; real-time feed flow data and real-time water supply amount data are obtained, and pelletizing rate is calculated according to the real-time feed flow data, real-time water supply amount data and the qualified ball mass data, and pelletizing rate data is obtained; system pelletizing rate is calculated according to the ball quantity data and the pelletizing rate data, and system pelletizing rate data is obtained, to carry out pelletizing disc adjustment operation.The present application calculates the pelletizing rate of each pelletizing disc in real time, and when the pelletizing rate of a certain pelletizing disc becomes low, it is convenient to feedback and adjust the pelletizing disc in time.

The diameter measuring device comprises a measuring ring and a gear box fixedly arranged at the bottom of the measuring ring, four evenly-distributed limiting sliding seats are fixedly arranged on the outer side of the measuring ring, and upper sliding grooves are formed in the middles of the top ends of the limiting sliding seats; according to the diameter measuring device for machining the cubic press piston, the annular design is adopted, the four piston centering mechanisms are additionally arranged on the measuring ring, and the measuring ring is directly held by a hand to sleeve the to-be-measured cubic press piston during measurement; a piston to be measured can be limited in the middle of the measuring ring through the piston centering mechanism, then the diameter of the piston can be measured through the laser range finder, four sets of data can be measured at a time, the measured data can be directly displayed, the simplicity and convenience of measurement operation can be improved, and the measurement accuracy can be improved. The device has the characteristics of small structural design, convenience in measurement operation, safety and reliability.

The invention relates to a stumpage diameter at breast height measuring method and device, computer equipment and a storage medium, a rectangular positioning mark with four corner points is arranged in a target chest height area of a stumpage to be measured, a camera is utilized to shoot a stumpage image containing a trunk and the positioning mark, and meanwhile, inherent parameters of the camera and actual size information of the positioning mark are obtained. Identifying a trunk image in the standing tree image and the pixel position of each corner point of the positioning identifier, calculating the size information of the positioning identifier in the image, and further establishing a first image space coordinate system; and meanwhile, determining space pose parameters of the camera relative to the first image space coordinate system according to inherent parameters of the camera, the pixel position of the positioning identifier and the actual size information. And finally, according to the established first image space coordinate system and the camera space pose parameters, determining a projection image of the breast height section of the stumpage to be measured in the trunk image, and analyzing edge pixel points of a projection area to solve the diameter of the breast height section as the diameter at breast height.

This invention provides a method for calibrating the parameters of a measuring device for an orifice valve in a nuclear power plant's main feedwater system. The method includes: a process for calibrating the straightness of a telescopic rod, including horizontally placing the telescopic rod, installing a reflecting prism at its end, tracking the center of the reflecting prism with a laser tracker, and calculating the straightness of the telescopic rod; a process for calibrating the stepper motor's step distance accuracy, including measuring and statistically analyzing the step distance accuracy with a laser tracker; a process for calibrating the servo motor's rotation accuracy, including mounting a reflecting prism on the servo motor's rotation axis, controlling the prism's rotation, and statistically analyzing the rotation accuracy; a process for calibrating the repeatability accuracy of a distance measuring sensor, including installing a distance measuring sensor at the end of the telescopic rod and statistically analyzing the repeatability accuracy; a process for calibrating the distance measuring sensor's center position compensation parameters, including calibrating the compensation parameters using standard pipe fittings; and a process for calibrating the pipe's inner diameter measurement accuracy, including adding the measured distance value to the compensation parameters for correction, scanning and measuring standard pipe fittings, and statistically analyzing the pipe's inner diameter measurement accuracy.

The invention relates to the technical field of wig production, in particular to a hair bundle diameter measuring device and system. The device further comprises a driving mechanism and a measuring mechanism, and the driving mechanism and the measuring mechanism are both installed on the supporting mechanism. The driving mechanism is matched with the supporting mechanism, so that the hair bundle diameter measurement convenience and accuracy are improved; through an image shooting mode, a deep learning model is adopted to realize accurate analysis of the diameter and the quality of the hair bundle; the structure is simple, the size is small, the modular structural design is adopted, and installation and maintenance are convenient; the tension sensor is adopted to ensure the same tension every time, so that the measurement accuracy of the diameter of the hair bundle is improved.

The present invention relates to the technical field of diameter measuring devices, and specifically to a laser detection-type device and method for detecting the outer diameter of a damper piston rod. The detection device includes a detection seat, a thruster, and a laser detector. The thruster includes a first shaft, a second shaft, and a drive structure. A detection guide groove is fixedly provided on the first shaft. The detection guide groove includes an annular guide groove and a connecting groove. The multiple annular guide grooves are spaced apart along the extension direction of an axis X, and the connecting groove connects adjacent annular guide grooves in the extension direction of the axis X. The present invention, through the guidance cooperation between the detection guide groove and the guide body, enables the laser emitter and receiver to rotate around each detection point of the piston rod once for detection, and then automatically move along the extension direction of the axis X by the distance of the detection point, automatically aligning with the next detection point on the piston rod for detection. This improves detection consistency and can better meet industrial applications.

The application discloses a cable winding device and belongs to the technical field of power cables. The device comprises a straightening mechanism, a cutting mechanism, a wire diameter measuring mechanism, a tension control mechanism and a guide mechanism arranged in sequence on a workbench; the left sliding block and the right sliding block of the wire diameter measuring mechanism respectively form a screw pair with a forward and reverse toothed rod, and are respectively attached with a pressure sensitive film through a left antenna and a right antenna; one end of a diameter measuring slide base is provided with a diameter measuring encoder; the flexible arm support body of the tension control mechanism is connected with the root joint body and the primary joint body through a series hinge, and is connected with the root joint body through a telescopic linear driving mechanism; the root joint body and the primary joint body are respectively hingedly connected with a recessed rotating shaft pulley. The application solves a series of problems such as diameter measurement and tension control, is not only complete in function, but also suitable for winding various small and heavy cables, and can significantly improve the winding efficiency and ensure the winding quality.

The invention discloses a method for measuring and calculating the diameter of a carbon fiber by a weighing method, which comprises the following steps: pretreatment: removing a sizing agent on a carbon fiber tow to be measured and calculated to obtain a pretreated carbon fiber tow; and calculating: selecting more than two carbon fibers from the pretreated carbon fiber tow as samples, and calculating the d average of the carbon fibers in the pretreated carbon fiber tow according to d average = square root of [4m / (epsilon pi rho L total)]. The to-be-measured carbon fiber tow is pretreated, so that the interference of a sizing agent can be eliminated, and the authenticity of diameter measurement is guaranteed; actual density rho is introduced to replace a general value, and the influence of batch fluctuation can be overcome; a plurality of sampling and correction coefficients epsilon are adopted, and the non-circularity and representativeness of the section are considered. The above means cooperate to make the weighing method really adapt to the material characteristics and structural characteristics of the carbon fibers, system errors are inhibited from the source, and the accuracy and repeatability of measurement results are significantly improved.

The present application relates to steel wire rope state detection technical field, especially in kind based on event compensation correction steel wire rope diameter measurement method and system, its technical scheme includes imaging module, boundary initial extraction module, dynamic motion estimation module, dynamic correction compensation module and diameter calculation module, the imaging module includes traditional camera, event camera, optical component, synchronous trigger device and beam splitter, the traditional camera is used for collecting the frame image of steel wire rope, the present application relies on the complementary advantages of event camera and traditional camera, through event driven dynamic geometric compensation model, the systematic measurement deviation under dynamic working condition is solved from the mechanism, the breakthrough of quasi-static imaging dependence is broken through, without additional constraint or frame rate promotion, control cost and hardware complexity, avoid signal-to-noise ratio decline and other problems, realize high-precision stable measurement under high speed, vibration working condition, adapt to multi-industrial scene online monitoring, practicality and application value are remarkable.

This invention relates to the field of monocrystalline silicon rod production, and specifically to a method for detecting the diameter of a lead crystal. The method includes: defining a lead crystal diameter detection area in an image of the lead crystal process; extracting a set of feature points representing the outer contour of the bright portion of the lead crystal aperture within the detection area; performing circle fitting on the outer contour feature point set to obtain a fitted circle diameter in pixels, and converting the fitted circle diameter into a physical diameter, denoted as D0; standardizing the image within the detection area; inputting a pre-trained classification model, and outputting a long point similarity judgment result, denoted as A1; processing multiple consecutive long point similarity judgment results A1 to obtain the probability of a long point existing in the current lead crystal aperture, denoted as A2; and combining the physical diameter D0 with the long point existence probability A2 to calculate the compensated lead crystal diameter, thereby achieving real-time identification of abnormally protruding long points in the lead crystal aperture and dynamically compensating the diameter measurement value accordingly.