Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm
This paper presents an approach to remotely evaluate the rotational velocity of a measured object by using a quadrant photo-detector and a differential subtraction correlation (DSC) algorithm. The rotational velocity of a rotating object is determined by two temporal-delay numbers at the minima of t...
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| Format: | Article |
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MDPI AG
2016-04-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/16/5/587 |
| _version_ | 1798005802026401792 |
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| author | Xiangkai Zeng Zhixiong Zhu Yang Chen |
| author_facet | Xiangkai Zeng Zhixiong Zhu Yang Chen |
| author_sort | Xiangkai Zeng |
| collection | DOAJ |
| description | This paper presents an approach to remotely evaluate the rotational velocity of a measured object by using a quadrant photo-detector and a differential subtraction correlation (DSC) algorithm. The rotational velocity of a rotating object is determined by two temporal-delay numbers at the minima of two DSCs that are derived from the four output signals of the quadrant photo-detector, and the sign of the calculated rotational velocity directly represents the rotational direction. The DSC algorithm does not require any multiplication operations. Experimental calculations were performed to confirm the proposed evaluation method. The calculated rotational velocity, including its amplitude and direction, showed good agreement with the given one, which had an amplitude error of ~0.3%, and had over 1100 times the efficiency of the traditional cross-correlation method in the case of data number N > 4800. The confirmations have shown that the remote evaluation of rotational velocity can be done without any circular division disk, and that it has much fewer error sources, making it simple, accurate and effective for remotely evaluating rotational velocity. |
| first_indexed | 2024-04-11T12:44:51Z |
| format | Article |
| id | doaj.art-fdb2f83a158b43718d81bffda44cb963 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:44:51Z |
| publishDate | 2016-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-fdb2f83a158b43718d81bffda44cb9632022-12-22T04:23:24ZengMDPI AGSensors1424-82202016-04-0116558710.3390/s16050587s16050587Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC AlgorithmXiangkai Zeng0Zhixiong Zhu1Yang Chen2School of Optoelectronic Information, Chongqing University of Technology, Chongqing 400054, ChinaSchool of Optoelectronic Information, Chongqing University of Technology, Chongqing 400054, ChinaSchool of Optoelectronic Information, Chongqing University of Technology, Chongqing 400054, ChinaThis paper presents an approach to remotely evaluate the rotational velocity of a measured object by using a quadrant photo-detector and a differential subtraction correlation (DSC) algorithm. The rotational velocity of a rotating object is determined by two temporal-delay numbers at the minima of two DSCs that are derived from the four output signals of the quadrant photo-detector, and the sign of the calculated rotational velocity directly represents the rotational direction. The DSC algorithm does not require any multiplication operations. Experimental calculations were performed to confirm the proposed evaluation method. The calculated rotational velocity, including its amplitude and direction, showed good agreement with the given one, which had an amplitude error of ~0.3%, and had over 1100 times the efficiency of the traditional cross-correlation method in the case of data number N > 4800. The confirmations have shown that the remote evaluation of rotational velocity can be done without any circular division disk, and that it has much fewer error sources, making it simple, accurate and effective for remotely evaluating rotational velocity.http://www.mdpi.com/1424-8220/16/5/587remote evaluationrotational velocitydifferential subtraction correlationquadrant photodetectortemporal-delay number |
| spellingShingle | Xiangkai Zeng Zhixiong Zhu Yang Chen Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm Sensors remote evaluation rotational velocity differential subtraction correlation quadrant photodetector temporal-delay number |
| title | Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm |
| title_full | Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm |
| title_fullStr | Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm |
| title_full_unstemmed | Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm |
| title_short | Remote Evaluation of Rotational Velocity Using a Quadrant Photo-Detector and a DSC Algorithm |
| title_sort | remote evaluation of rotational velocity using a quadrant photo detector and a dsc algorithm |
| topic | remote evaluation rotational velocity differential subtraction correlation quadrant photodetector temporal-delay number |
| url | http://www.mdpi.com/1424-8220/16/5/587 |
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