806 results about "Diameter measurement" patented technology

The present invention is directed to automated apparatuses and methods for measuring fastener hole depth, fastener length, countersink depth and/or hole diameters in a workpiece (or other object) in an automated and extremely rapid, efficient and accurate manner. The apparatuses may be operably connected with a power source and with one or a plurality of computers or other data collection devices to transmit fastener hole depth, countersink depth and/or hole diameter measurement data and/or information to them each time that a fastener hole is measured, while the apparatus is continuously measuring fastener holes (i.e., with no interruptions). Extremely advantageously, using only one hand, and by only squeezing a trigger only one time, an operator of such an apparatus may successfully and very rapidly and accurately perform more than one, or all three, of the following functions: (i) normalize the apparatus relative to one or a plurality of fastener holes and/or workpiece surfaces; (ii) make one or a plurality of accurate measurements; and (iii) transmit the one or more measurements from the apparatus to one or a plurality of computers and/or other data collection devices for, for example, recordation, storage, manipulation, other use and/or the like.

A substrate processing apparatus (1) includes first and second polishing units (70A, 70B) for polishing a peripheral portion of a substrate (W), a primary cleaning unit (100) for cleaning the substrate (W), a secondary cleaning and drying unit (110) for drying the substrate (W) cleaned in the primary cleaning unit (100), and a measurement unit (30) for measuring the peripheral portion of the substrate (W). The measurement unit (30) includes a mechanism for measurement required for polishing in the first and second polishing units (70A and 70B), such as a diameter measurement mechanism, a cross-sectional shape measurement mechanism, or a surface condition measurement mechanism.

The invention relates to a pipeline robot for internal diameter measurement. The pipeline robot for the internal diameter measurement comprises a supporting mechanism, a main driving mechanism and a laser measurement mechanism, wherein the supporting mechanism mainly consists of a nut for a ball screw, a step motor I, wheels, a connection rod, a push rod and the like; the main driving mechanism mainly consists of a worm gear, a worm rod, a belt wheel, a transmission belt and the like; and the linear movement of the pipeline robot can be realized through the driving of a step motor II. The laser measurement mechanism is mainly composed of a sensing measuring head, a sensor bracket and a step motor III. The pipeline robot provided by the invention can be used for measuring an internal diameter of a long pipeline, and can particularly meet the measurement requirement of thin and long pipes with the larger range of the internal diameter. The pipeline robot provided by the invention not only can be used for carrying out non-contact measurement on the internal diameters of the pipelines with different sizes but also can realize various measurements by means of replacing a measurement head of a sensor, such as flaw detection and the like. The pipeline robot has the advantages of high measurement precision and convenience in use.

A system and a method of measuring a particle's size in a select aerosol using the optical diameter of the particle to perform a mobility and/or aerodynamic diameter conversion without any knowledge about the particle's shape and its optical properties in the aerosol being characterized. In one example embodiment of the invention, the method includes generating a set of calibration data and finding the optimal refractive index and shape that best fits the calibration data. In addition, the method includes creating a new calibration curve that provides a mobility-equivalent or aerodynamic-equivalent diameter.

The invention belongs to the field of intelligent instruments and devices and relates to a high-speed laser internal diameter detection system. The good detection effect of laser on surfaces of objects such as metal is utilized, and relative coordinate information of the measurement point position of a detected internal diameter is obtained using a laser triangulation method. In order to ceaselessly, effectively and stably 360-degree collect various data required in internal diameter detection, a laser range finding probe is innovatively combined with a slip ring, so that the laser range finding probe can be directly connected to a motor and achieves 360-degree high-speed rotation. A high-precision electric control linear guide rail is utilized to achieve comprehensive acquisition of internal diameter data, thereby conducting high-precision internal diameter measurement. Through verification, the laser internal diameter detection method meets requirements of internal diameter nondestructive testing, a host computer platform is friendly, and correlated data can be fed back remotely and wirelessly. The measurement method provided by the method can be popularized into other high-precision dimension detection systems capable of reflecting object internal walls.

The invention relates to a biological information acquisition and presentation kit that enables a general able-bodied person or subject to measure the subject's own biological or emotional index in a ready way. The kit 1 is characterized by comprising a positioning means capable of being positioned on an axial focus position of a taking optical system that allows a subject to take an image of a subject's eyeball by herself or himself, an imaging means adapted to take an image of the subject's eyeball, a measurement means adapted to measure a physiological index from the image taken of the eyeball, a conversion means adapted to convert the physiological index detected by said measurement means into an emotional index, and a recording means adapted to record said physiological index or said emotional index, and further comprising a presentation means adapted to present comparative information with a recorded past emotional index.

The invention discloses a depth aperture internal diameter measurement device, comprising a tapered block, a sleeve, three measurement rods, a spring, a push rod, a sleeve rod, a thread sleeve rod, a three-claw chuck and an internal diameter dial indicator. The conical surface of the tapered block is uniformly provided with three sliding grooves which are formed along the generatrix direction of the tapered block; the included angle between each sliding groove and the axis of the tapered block is 45 degree; the wall of the sleeve is provided with three through holes which are uniformly distributed along the circumference; three measurement rods pass through the through hole in the wall of the sleeve; and one end of the measurement rod is clamped inside a sliding groove. In the invention, the included angle between the sliding groove and the axis of the tapered block is 45 degrees and the displacement of the measurement rod along the radial direction is turned into an axial direction, which avoids the intermediate transfer between the levers in the traditional measurement, has more accurate measurement and can measure the maximum and minimum diameter of any cross section.

The invention discloses a Czochralski single crystal silicon diameter measurement method, which comprises the following steps of: synchronously acquiring single crystal growth images by using a camera, performing pre-processing and edge detection on the acquired images of each frame, performing sub-pixel optimal approximation and fit of a circle on the images of each frame by adopting a midpoint Bresenham circle drawing algorithm, and performing mean filter on the basis of a fit arc to acquire the accurate diameter of single crystal. The method can perform the sub-pixel optimal approximation of the circle by adopting the midpoint Bresenham circle drawing algorithm and can accurately calculate the diameter of the single crystal by using the common analog industrial camera so as to achieve the measurement effect of the high-resolution industrial camera.

A holographic detection system for a steel wire rope, having a detection device, a stroke metering device, a data acquisition and conversion workstation, an alarm controller, and a terminal control master station is provided. The detection device further specifically has a steel wire rope electromagnetic detection device, a steel wire rope machine vision damage recognition device, a steel wire rope machine vision diameter measurement device, and a damage location marking device. The holographic detection system for a steel wire rope may perform comprehensive evaluation on the damage situation of the steel wire rope and refine damage data information, thereby comprehensively improving the refinement degree of detection and the detection accuracy.

The invention provides a device and a method for measuring the diameter of plant stems based on machine vision. The measurement device comprises a camera (1), an annular LED light source (2), a support frame (3), a cylindrical reference object (4), an IEEE 1394 signal fiber transmission device (5), a data transmission cable (6) and a computer (7). The measurement method comprises the following steps of utilizing the camera (1) to acquire images of a to-be-measured plant stem and the cylindrical reference object (4) within a certain time interval, transmitting the images to the computer (7) through the IEEE 1394 signal fiber transmission device (5) and the data transmission cable (6) and utilizing image processing software installed in the computer to calculate the diameter of the plant stem. The invention effectively solves the constraint influence of the prior measurement tool on the diameter changes of the plant stem, avoids the trouble of replacing different range sensors for measuring different plant stems, and can be used for nondestructively monitoring the diameter of the plant stem and small variable quantity of diameter within a certain period of time on line.

A data collection device obtains three-dimensional ultrasound scan information of a portion of the abdominal aorta. A plurality of transducer elements are arranged to provide overlapping coverage. The data collection device is first positioned over the aorta by an operator; a one-dimensional scan with a Doppler sound generator operating on the blood flow is used to verify proper initial positioning of the device. Three-dimensional scan information is then obtained and converted from plane coordinates into spherical coordinates such that the resulting converted scan line planes are perpendicular to the aorta. The information in each converted scan line plane is then processed to determine the boundaries of the aorta, from which diameter information is then calculated. Diameter measurements over a given region of the aorta can be used to determine and monitor an aneurysm in the aorta.

The present invention relates to an axial line correction method of a cylindrical workpiece. According to the method, the spatial relative position of the workpiece under a measurement coordinate system is determined based on the design of the reference point C0 of the end surface of the workpiece; the first correction deltax and deltay of the deviation of a positioning section ZA and a positioning section ZB of the workpiece on an X axis and a Y axis are realized through using two groups of symmetrically-correlated compensation points on the positioning section ZA and the positioning sectionZB of the workpiece; the outlines of the positioning section ZA and the positioning section ZB are resampled, so that sampling points are obtained, a center point O'A and a center point O'B are obtained through fitting calculation; with a straight line determined by the center point O'A and the center point O'B adopted as a reference axis phi of the cylindrical workpiece, a geometric relationshipwith the reference point C0 is built and is solved; and the calibration and correction of a relative deviation angle theta between the reference axis phi and the Z axis of the measurement coordinate system are realized. The present invention also provides a diameter measurement method of the sectioned section of a cylindrical workpiece. According to the diameter measurement method, a geometric relationship between the correction values deltax and deltay of positioning sections and a measured section is built; linear compensation values deltaxi and deltayi are obtained; the coordinates of a probe relative to a sampling point are calculated; integrated and automatic sampling on the outline of the measured section is realized; and a spatial projection and fitting algorithm is adopted to process sampling data to obtain the quantity value of the measured section.

The invention relates to a method and a device for automatically restoring, measuring and classifying steel dimple images. The device comprises an image acquiring system, an image pretreating part, an image restoring part, an image analyzing part, etc. The image pretreating part is used for performing median filter noise removal and gray level correction on original images acquired by the image acquiring system; the image restoring part is used for performing binary segmentation by using an adaptive fuzzy threshold valve method; boundary deletion and holes in the obtained binary images are processed respectively by using an ultra-erosion and layer-by-layer expansion method and an improved scanning line seed filling algorithm; the image analyzing part is used for performing region calibration on the processed images and setting the dimple diameter as the diameter of the minimum circumcircle of the dimple; and a random dimple region area algorithm is used to measure the dimple area so as to obtain the dimple diameter. After measurement, the measured classification results are output. The invention has the advantages of accuracy, efficiency and convenience, and can be popularized and applied in fracture measurement, analysis and classification with complex backgrounds and shapes in the material filed.

The invention discloses a three-jaw centering internal diameter measurement device and measurement method. The device comprises a cylinder, a plurality of measurement assembly and a driving apparatus. Each measurement assembly comprises a support, a measurement small wheel, a soft spring, a hard spring, a measurement end press rod, a press sheet, a sensor, a press sheet rod and a support rod. The sensor is arranged on the inner side wall of the cylinder; the hard spring, the press sheet, the soft spring and the support are connected in sequence; the hard spring is fixedly arranged on the outer side wall of the cylinder; and the support is movably equipped with the measurement small wheel. One end of the measurement end press rod passes through the hard spring, the press sheet and the soft spring and is fixed to the support, and the other end thereof is a free end, and can pass through the cylinder and extend into the sensor when the soft spring and/ or hard spring are/is compressed. One end of the press rod is fixedly arranged on the press sheet, and the other end thereof is fixedly arranged on the outer side wall of the cylinder through the support rod. The driving apparatus comprises a press tube, a stepping press device and a locating shaft. The locating shaft is arranged coaxially with a center shaft of the cylinder; and the press tube is fixedly arranged on the locating shaft and is corresponding to the plurality of press sheet rods.

The invention relates to a method and device for measuring the diameter of a bamboo tube based on digital image processing technology. It uses an industrial camera to collect a digital image of the cross-section of the bamboo tube, and automatically processes it through an image processing program to measure the maximum outer diameter, the smallest outer diameter, and the minimum outer diameter of the bamboo tube. Average outer diameter, maximum inner diameter, smallest inner diameter and average inner diameter, and display the measurement results. Because the present invention adopts the industrial camera perpendicular to the bamboo tube cross-section to collect the bamboo tube cross-sectional image, the image distortion is small and the precision is high; through the automatic processing and measurement of the digital image processing program designed, the measurement accuracy can be improved by increasing the number of sampling times; non-contact method The method for measuring the diameter of the bamboo tube has high speed and high efficiency, and is convenient for realizing automation of bamboo processing; the invention is simple to realize, has fast measurement speed, is stable and reliable, has detailed diameter parameters and high precision.

The invention relates to the technical field of bearing production, in particular to bearing steel ball sorting equipment capable of automatically measuring diameters. The bearing steel ball sorting equipment comprises a control cabinet, an automatic feeding mechanism, a differential type inductive-transducer diameter measurement mechanism and an automatic sorting mechanism. Automatic falling of steel balls is achieved through cooperation of a hopper, a steel ball baffle and a photoelectric sensor, a PLC system controls a cylinder to achieve automatic feeding, and a differential type inductive transducer is used for measuring the diameters of the steel balls so as to improve measurement precision. A sorting box is matched with PLC control to achieve automatic graded sorting of the steel balls, and unqualified steel balls are picked out. The automatic measurement and sorting process of the steel balls is achieved through automatic falling, high-precision steel ball diameter measurement through the differential type inductive transducer and the sorting box controlled by a PLC.

The invention provides a drilling trajectory design parameter based pre-drilling three-dimensional hole modeling method and apparatus. The method comprises the steps of obtaining a drilling trajectory and hole diameter data of a drilled well, wherein the drilling trajectory comprises a well depth, an azimuth angle and a hole drift angle of each diameter measurement point; according to the drilling trajectory and the hole diameter data, calculating three-dimensional space coordinates of a hole diameter measurement point; according to the three-dimensional space coordinates, generating circumferential hole diameter data corresponding to the hole diameter measurement point; establishing a drilled well database at least containing the hole diameter data and the circumferential hole diameter data; according to the drilled well database, establishing a three-dimensional hole model; and substituting a pre-drilling trajectory design parameter and geologic data into the three-dimensional hole model to calculate a hole shrinkage rate and a hole diameter expanding rate of pre-drilling. Through the modeling method and apparatus, the hole shrinkage rate and the hole diameter expanding rate of pre-drilling are calculated according to the established three-dimensional hole mathematic model, so that a specific condition of a real hole can be reflected and predicted more accurately and comprehensively, and data support can be provided for hole engineering design work.