A Fast Measuring Method for the Inner Diameter of Coaxial Holes

Wang, Lei; Yang, Fan; Fu, Lei; Zhong, Wei‐Ping; Yang, Tongyu; Liu, Changjie

doi:10.3390/s17030652

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…However, the method demands rigorous camera calibration and yields variable measurement stability. L. Wang et al [10] explored a rapid measurement technique for coaxial bore diameters using a system of multi-tiered measuring rods and laser sensors, achieving an inner diameter precision of 0.028 mm. L. Gao et al [11] aimed to elevate shaft diameter measurement efficiency and precision by devising an automated method based on dual-beam projection, attaining an accuracy of 0.02 mm, though at the expense of increased equipment complexity and cost.…”

Section: Related Workmentioning

confidence: 99%

Vision-based measurement method for geometric dimensions of PVC pipe end faces

Yu,

Zhao,

Hou

et al. 2024

J. Inst.

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This study introduces a vision-based expedited methodology for assessing various geometric circular dimensions on the termini of PVC conduits. The process commences with delineating pipe profiles using the EDPF algorithm for edge detection. Successive steps employ a radius-constrained weighted circular approximation algorithm to form provisional circular profiles from closed-edge segments. These profiles are refined using a rapid circle arc fitting algorithm for multiple open-edge sections. Noise circles are sifted out with the Number of False Alarms algorithm, and upon calibration with actual dimensions, these profiles are quantified into physical sizes of the conduit's terminal geometries. Empirical evidence from the methodology demonstrates an ability to measure the circular dimensions with a mean accuracy rate surpassing 99.2%.

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Section: Related Workmentioning

confidence: 99%

Vision-based measurement method for geometric dimensions of PVC pipe end faces

Yu,

Zhao,

Hou

et al. 2024

J. Inst.

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show abstract

“…Kuester [7] are using laser displacement sensor while modelling the wind tunnel position measurement and conclude that the length output from the lasers was found to drift slightly with temperature. Laser displacement sensor has been used in [8][9][10][11] which conclude that the measurement using this method provide more convenient operation and ease to be used. A study conducted in [12] proposed to use light emitting diode reflective distance sensors (LED-RDS) for displacement measurement which is cheaper and inherently safe alternative to sensors using lasers and optical fibers.…”

Section: Introductionmentioning

confidence: 99%

Development of mobile robot for measuring distance using optical quadrature encoder

Zahari

Mutalib

Affendi

et al. 2020

IJEECS

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<span>This paper describes the design and development of a measuring tool using a mobile robot. At present, contractors are measuring distances using measuring tape which has few limitations. This includes using of another manpower or a marking flag. The Robot Measuring System is designed to measure distances at multiple conditions such as smooth and rough surface. An optical quadrature encoder is used as a sensor to measure the distances while a program is installed in Arduino Uno for reading and data collection. Graphical User Interface (GUI) was created using Android software so that the movement of the robot can be controlled using a smartphone within a Bluetooth range. An experiment was conducted to test the reliability in terms of accuracy and precision. The best accuracy and precision were obtained when the robot speed is at 90 cm/s on the plain tiles, 80 cm/s on the tar road and 90 cm/s on the grass surface. The robot speed needs to be adjusted accordingly based on the surfaces in order to get an accurate result. <br /> This paper proved that the robot measuring system was successfully designed, implemented and analyzed.</span>

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“…In non-contact measurement, the laser displacement sensor is widely used in the fields of reverse engineering and accuracy measurement by virtue of its advantages of high measurement accuracy, wide measurement range, easy integration with a computer to form an intelligent testing system, and ability to conduct online testing at a production site [ 6 ]. Li et al adopted multiple laser displacement sensor arrays to realize the on-line in-situ testing of important parameters of automotive engine cabinets and connecting rods [ 7 , 8 ]; Wang et al applied the laser displacement sensor to the dimension measurement of coaxial holes and then verified by experiment that the new testing method is both rapid and effective [ 9 ]; An automatic measuring system for the dimensions of the internal holes of long-stepped pipes based on the laser displacement sensor was designed [ 10 ]; Chen et al researched a non-contact pulse automatic positioning measurement system for traditional Chinese medicine in combination with the advantages of optical measurement and computer automation [ 11 ]. However, the said research all lacks the error compensation and reconstruction of the data acquired by a laser displacement sensor, resulting in unsatisfactory measurement results.…”

Section: Introductionmentioning

confidence: 99%

A Fast and On-Machine Measuring System Using the Laser Displacement Sensor for the Contour Parameters of the Drill Pipe Thread

Dong

Sun

Chen

et al. 2018

Sensors

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The inconvenient loading and unloading of a long and heavy drill pipe gives rise to the difficulty in measuring the contour parameters of its threads at both ends. To solve this problem, in this paper we take the SCK230 drill pipe thread-repairing machine tool as a carrier to design and achieve a fast and on-machine measuring system based on a laser probe. This system drives a laser displacement sensor to acquire the contour data of a certain axial section of the thread by using the servo function of a CNC machine tool. To correct the sensor’s measurement errors caused by the measuring point inclination angle, an inclination error model is built to compensate data in real time. To better suppress random error interference and ensure real contour information, a new wavelet threshold function is proposed to process data through the wavelet threshold denoising. Discrete data after denoising is segmented according to the geometrical characteristics of the drill pipe thread, and the regression model of the contour data in each section is fitted by using the method of weighted total least squares (WTLS). Then, the thread parameters are calculated in real time to judge the processing quality. Inclination error experiments show that the proposed compensation model is accurate and effective, and it can improve the data acquisition accuracy of a sensor. Simulation results indicate that the improved threshold function is of better continuity and self-adaptability, which makes sure that denoising effects are guaranteed, and, meanwhile, the complete elimination of real data distorted in random errors is avoided. Additionally, NC50 thread-testing experiments show that the proposed on-machine measuring system can complete the measurement of a 25 mm thread in 7.8 s, with a measurement accuracy of ±8 μm and repeatability limit ≤ 4 μm (high repeatability), and hence the accuracy and efficiency of measurement are both improved.

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A Fast Measuring Method for the Inner Diameter of Coaxial Holes

Cited by 4 publications

References 23 publications

Vision-based measurement method for geometric dimensions of PVC pipe end faces

Vision-based measurement method for geometric dimensions of PVC pipe end faces

Development of mobile robot for measuring distance using optical quadrature encoder

A Fast and On-Machine Measuring System Using the Laser Displacement Sensor for the Contour Parameters of the Drill Pipe Thread

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