JPS5499481A - Laser speed mesuring apparatus - Google Patents
Laser speed mesuring apparatusInfo
- Publication number
- JPS5499481A JPS5499481A JP594078A JP594078A JPS5499481A JP S5499481 A JPS5499481 A JP S5499481A JP 594078 A JP594078 A JP 594078A JP 594078 A JP594078 A JP 594078A JP S5499481 A JPS5499481 A JP S5499481A
- Authority
- JP
- Japan
- Prior art keywords
- light
- axis
- measured
- mirrors
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
PURPOSE:To present high precision devices of Doppler effect without effects of line fluctuations, by dividing the laser beam into reference light and specimen light, radiating so that both lights intersect on the surface of the object being measured, and receiving the both reflected scattered lights on the reference axis. CONSTITUTION:A semi-transparent mirror 2 in placed on the reference axis A1, being parallel thereto, and two full reflection mirrors 3 are placed in the poisition axis-symmerical to axis A1, and the center of the intersection of reference light R and specimen light S is disposed on the axis A1 at a distance of l from the center of the two mirrors 3. A total reflection mirror 10 has its center coincided with the axis A1, and when the light R and light S are reflected by the object being measured 5, each scattered light is received by an effective aperture and is sent to a photo detector 7. By selecting the magnification (n) to magnify the laser beam of an inverted telescope 9, the intersecting angle theta of the lights R and S, central distance (a) of the mirrors 3, and the distance l from the center of the mirrors 3 to the object being measured 5, etc., a specified value of S/N of the reception signal is obtained. If the distance l varies by + or -DELTAl, the deflection + or -DELTAd of the output signal fd of the detector 7 and the S/N are at the specified values, so that the speed of steel plate or the like may be measured at high precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP594078A JPS5499481A (en) | 1978-01-23 | 1978-01-23 | Laser speed mesuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP594078A JPS5499481A (en) | 1978-01-23 | 1978-01-23 | Laser speed mesuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5499481A true JPS5499481A (en) | 1979-08-06 |
Family
ID=11624891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP594078A Pending JPS5499481A (en) | 1978-01-23 | 1978-01-23 | Laser speed mesuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5499481A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5047653A (en) * | 1989-06-30 | 1991-09-10 | Thomson-Csf | Device on board a moving vehicle to obtain signals representative of the relative speed of the vehicle with respect to an ambient fluid |
| JP2006326647A (en) * | 2005-05-26 | 2006-12-07 | Nippon Steel Corp | Plate speed meter |
-
1978
- 1978-01-23 JP JP594078A patent/JPS5499481A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5047653A (en) * | 1989-06-30 | 1991-09-10 | Thomson-Csf | Device on board a moving vehicle to obtain signals representative of the relative speed of the vehicle with respect to an ambient fluid |
| JP2006326647A (en) * | 2005-05-26 | 2006-12-07 | Nippon Steel Corp | Plate speed meter |
| JP4530915B2 (en) * | 2005-05-26 | 2010-08-25 | 新日本製鐵株式会社 | Plate speedometer |
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