Vision-Based Measurement System for Instantaneous Rotational Speed Monitoring Using Linearly Varying-Density Fringe Pattern

Zhong, Jianfeng; Zhong, Shuncong; Zhang, Qiukun; Peng, Zhike; Liu, Shulin; Yu, Yingjie

doi:10.1109/tim.2018.2795890

Cited by 34 publications

(10 citation statements)

References 23 publications

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“…Digital image processing and vision system have also been used to detect rotor motion [ 11 , 12 , 13 , 14 ]. For example, a novel nonprojection fringe vision-based system simply composed of an artificial linearly varying-density fringe pattern as a sensor and a high-speed camera as a detector was proposed to realize the measurement of instantaneous rotational speed (IRS) in [ 15 ]. Guo et al realized vision-based measurement for rotational speed by improving the Lucas–Kanade template tracking algorithm [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

An Identification Method for Rotor Direction Based on Charge Induction

Chang

Zhang

Lin

et al. 2021

Sensors

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The detection of rotor motion is always key to ensure the normal operation of industrial sewing machines. This paper presents a novel method for rotor detection based on charge induction mechanism, which is suitable for industrial environments with high noise and electromagnetic radiation and is easy to install. Firstly, the principle of measuring rotor rotation based on charge induction is given. Then, the detection model of rotor direction identification based on two detection electrodes is established. Finally, details are given of the detection circuit design and the experiment that was carried out. The results show that the proposed method can effectively identify the noncontact rotor direction with and without occlusion, indicating that the method has excellent anti-interference capability. The accuracy of the method can be further improved by increasing the sampling rate and sampling points of the system.

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Section: Introductionmentioning

confidence: 99%

An Identification Method for Rotor Direction Based on Charge Induction

Chang

Zhang

Lin

et al. 2021

Sensors

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“…With rapid advances in imaging sensors and image processing algorithms in recent years, imaging based techniques provide a promising alternative to rotational speed measurement [13][14][15][16][17][18][19][20][21]. The imaging technique is potentially suitable for applications in a hostile environment because of its sensing principle.…”

Section: Introductionmentioning

confidence: 99%

“…Existing speed measurement systems based on the imaging principle are normally implemented by exploiting the intensity distribution difference between two consecutive frames with the aid of camera calibration techniques [13][14][15][16][17][18]. An instantaneous rotational speed measurement system using a high-speed camera and a well-designed varying-density fringe pattern was proposed by Zhong et al [13,14]. The imaged fringe pattern intensity changed due to the rotation of the shaft, from which the instantaneous rotational speed was obtained.…”

Section: Introductionmentioning

confidence: 99%

Instantaneous Rotational Speed Measurement Using Image Correlation and Periodicity Determination Algorithms

Wang

Yan²,

Wang³

et al. 2020

IEEE Trans. Instrum. Meas.

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“…Based on the principle of rotating magnetic field, Arif et al [3] detected the change of the rotational speed within 2.5 ms. Mirzaei et al [4] designed a new type of non-contact eddy current speed sensor when the speed is lower than 1200 r/min. As for the problem that conventional sensors cannot be mounted on a rotating shaft, Zhong et al [5] measured the rotational speed based on the stripe vision system. Pawlenka et al [6] measured the rotational speed of high-speed objects using Kalman filtering, achieving certain results.…”

Section: Introductionmentioning

confidence: 99%

Self-Powered Speed Sensor for Turbodrills Based on Triboelectric Nanogenerator

Fan

2019

Sensors

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Turbodrills play an important role in underground energy mining. The downhole rotational speed of turbodrills is one of the key parameters for controlling the drilling technology. Therefore, it is necessary to measure the rotational speed of the turbodrills in real time. However, there is no dedicated speed sensor for the working environment of turbodrills at present. Therefore, based on the working principle of triboelectric nanogenerator (TENG), a self-powered speed sensor which can measure the speed of the turbodrills is proposed in this study. Besides, since the sensor is self-powered, it can operate without power supply. According to the laboratory test results, the measurement error of the sensor is less than 5%. In addition, the self-powered performance of the sensor was also explored in this study. The test shows that the maximum generating voltage of the sensor is about 27 V, the maximum current is about 7 μA, the maximum power is about 2 × 10−4 W, and the generated electricity can supply power for ten LED (light-emitting diode), which not only meets the power supply requirements of the sensor itself, but also makes it possible to further power other underground instruments.

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Vision-Based Measurement System for Instantaneous Rotational Speed Monitoring Using Linearly Varying-Density Fringe Pattern

Cited by 34 publications

References 23 publications

An Identification Method for Rotor Direction Based on Charge Induction

An Identification Method for Rotor Direction Based on Charge Induction

Instantaneous Rotational Speed Measurement Using Image Correlation and Periodicity Determination Algorithms

Self-Powered Speed Sensor for Turbodrills Based on Triboelectric Nanogenerator

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