Simultaneous range and velocity measurement using a frequency shifted feedback laser
Laser Doppler velocimeters (LDVs) are non-contact sensors for measuring velocity, and generally used for measuring length of steel products. However, the distance range of the measurement target is restricted to a certain region in principle, making it difficult to measure the velocity of steel prod...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-12-01
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| Series: | Measurement: Sensors |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2665917422000587 |
| _version_ | 1797998957654179840 |
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| author | Shinichi Oshima Yoshito Isei |
| author_facet | Shinichi Oshima Yoshito Isei |
| author_sort | Shinichi Oshima |
| collection | DOAJ |
| description | Laser Doppler velocimeters (LDVs) are non-contact sensors for measuring velocity, and generally used for measuring length of steel products. However, the distance range of the measurement target is restricted to a certain region in principle, making it difficult to measure the velocity of steel products with large distance fluctuations. To remove this restriction, a frequency-shifted feedback laser range and velocity meter (FSFL-RVM) was developed with an FSFL whose frequency changes proportionally with time at ultra-high speeds. This new sensor can measure the velocity without this restriction and additionally measure the distance without contact. The measurement accuracy was evaluated experimentally, and its measurement principle was verified. As a result, it was confirmed that its ability to measure velocities with the same accuracy as the LDV in a distance range five times that of the LDV and simultaneously measure distances within an accuracy of 0.1 mm. |
| first_indexed | 2024-04-11T10:57:00Z |
| format | Article |
| id | doaj.art-f96789c32793430ea9097b30e6c90857 |
| institution | Directory Open Access Journal |
| issn | 2665-9174 |
| language | English |
| last_indexed | 2024-04-11T10:57:00Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Measurement: Sensors |
| spelling | doaj.art-f96789c32793430ea9097b30e6c908572022-12-22T04:28:44ZengElsevierMeasurement: Sensors2665-91742022-12-0124100424Simultaneous range and velocity measurement using a frequency shifted feedback laserShinichi Oshima0Yoshito Isei1Corresponding author.; Process Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu City, Chiba Pref., 293-8511, JapanProcess Research Laboratories, Nippon Steel Corporation, 20-1 Shintomi, Futtsu City, Chiba Pref., 293-8511, JapanLaser Doppler velocimeters (LDVs) are non-contact sensors for measuring velocity, and generally used for measuring length of steel products. However, the distance range of the measurement target is restricted to a certain region in principle, making it difficult to measure the velocity of steel products with large distance fluctuations. To remove this restriction, a frequency-shifted feedback laser range and velocity meter (FSFL-RVM) was developed with an FSFL whose frequency changes proportionally with time at ultra-high speeds. This new sensor can measure the velocity without this restriction and additionally measure the distance without contact. The measurement accuracy was evaluated experimentally, and its measurement principle was verified. As a result, it was confirmed that its ability to measure velocities with the same accuracy as the LDV in a distance range five times that of the LDV and simultaneously measure distances within an accuracy of 0.1 mm.http://www.sciencedirect.com/science/article/pii/S2665917422000587LaserFSFLRangefinderVelocimeter |
| spellingShingle | Shinichi Oshima Yoshito Isei Simultaneous range and velocity measurement using a frequency shifted feedback laser Measurement: Sensors Laser FSFL Rangefinder Velocimeter |
| title | Simultaneous range and velocity measurement using a frequency shifted feedback laser |
| title_full | Simultaneous range and velocity measurement using a frequency shifted feedback laser |
| title_fullStr | Simultaneous range and velocity measurement using a frequency shifted feedback laser |
| title_full_unstemmed | Simultaneous range and velocity measurement using a frequency shifted feedback laser |
| title_short | Simultaneous range and velocity measurement using a frequency shifted feedback laser |
| title_sort | simultaneous range and velocity measurement using a frequency shifted feedback laser |
| topic | Laser FSFL Rangefinder Velocimeter |
| url | http://www.sciencedirect.com/science/article/pii/S2665917422000587 |
| work_keys_str_mv | AT shinichioshima simultaneousrangeandvelocitymeasurementusingafrequencyshiftedfeedbacklaser AT yoshitoisei simultaneousrangeandvelocitymeasurementusingafrequencyshiftedfeedbacklaser |