CN111024978B - Light curtain target auxiliary measuring device and using method thereof - Google Patents
Light curtain target auxiliary measuring device and using method thereof Download PDFInfo
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- CN111024978B CN111024978B CN201911187265.6A CN201911187265A CN111024978B CN 111024978 B CN111024978 B CN 111024978B CN 201911187265 A CN201911187265 A CN 201911187265A CN 111024978 B CN111024978 B CN 111024978B
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- curtain target
- mounting bracket
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 claims description 8
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses an auxiliary measuring device for a light curtain target, which comprises: a transmitting laser device and a receiving laser device; the laser emitting apparatus includes: the device comprises an emission mounting bracket, an emission laser and a light curtain target frame; the emission mounting bracket is fixed on the light curtain target frame and is provided with a plurality of first laser grooves; the light curtain target frame is provided with a plurality of second laser grooves; the emitting lasers are arranged in the first laser groove and the second laser groove, and lasers emitted by the emitting lasers form a grid type light curtain; the laser receiving apparatus includes: the photoelectric detector, the signal collector and the receiving and mounting bracket; the photoelectric detector is arranged at the edge of the receiving mounting bracket, and the signal collector is respectively connected with the photoelectric detector and the computer through signal lines. The invention also discloses a use method of the light curtain target auxiliary measuring device. The invention can enable the object passing through the light curtain target to touch more laser beams, thereby more accurately determining the position of the object passing through the light curtain target.
Description
Technical Field
The invention relates to a light curtain target auxiliary measuring device and a using method thereof.
Background
The light curtain target is a speed measuring device based on photoelectric conversion principle and adopting active emission light source. Two light curtain targets and a timer can measure the flying speed of the object.
The light curtain target adopts the photoelectric conversion principle, belongs to non-contact measurement, has better measurement accuracy than measuring instruments of other principles, and is used for measuring the speed of small-sized flyers due to good anti-interference and lower cost. The light curtain target has the advantages that the light curtain target is provided with a light source, the light source and the light source are integrated, the use is convenient, and the precision is not influenced by operators; the method is not limited by the material of the small-sized flyer, can more accurately measure the initial speed and the target speed of the small-sized flyer, and has good measurement repeatability.
Problems with light curtain targets:
1. the light curtain target works by utilizing the change of the luminous flux received by the photoelectric element, so that the light curtain target is easily interfered by external factors such as birds, mosquitoes, fire light, environmental vibration and the like when in use, and the accuracy of speed measurement is influenced.
2. The light curtain target cannot observe the position of an object when the object passes through the light curtain target.
Disclosure of Invention
The invention aims to provide a light curtain target auxiliary measuring device and a using method thereof, which can enable an object passing through a light curtain target to touch more laser beams, thereby more accurately determining the position of the object passing through the light curtain target, presenting a contour image of the object passing through the light curtain target on a computer and judging whether the object passing through the light curtain target is a target measuring object.
The technical scheme is as follows:
light curtain target auxiliary measuring device includes: a transmitting laser device and a receiving laser device; the laser emitting apparatus includes: the device comprises an emission mounting bracket, an emission laser and a light curtain target frame; the emission mounting bracket is fixed on the light curtain target frame and is provided with a plurality of first laser grooves; the light curtain target frame is provided with a plurality of second laser grooves; the emitting lasers are arranged in the first laser groove and the second laser groove, and lasers emitted by the emitting lasers form a grid type light curtain; the laser receiving apparatus includes: the photoelectric detector, the signal collector and the receiving and mounting bracket; the photoelectric detector is arranged at the edge of the receiving mounting bracket, and the signal collector is respectively connected with the photoelectric detector and the computer through signal lines.
Further, the emitting laser is installed at the end position of the first laser groove and the second laser groove, and the plurality of photoelectric detectors are located on two right-angle edges of the receiving and installing support.
Furthermore, the horizontal included angle of the first laser groove is 30 degrees, and the second laser groove is in the vertical direction.
Furthermore, the positions of the emission laser and the photoelectric detector are opposite and respectively close to two ends of the first laser groove and two ends of the second laser groove.
The use method of the light curtain target auxiliary measuring device comprises the following steps:
starting a transmitting laser, and transmitting a laser beam by the transmitting laser to form a grid type laser ray; the photoelectric detector detects and receives the continuous laser signal emitted by the emitting laser and sends the continuous laser signal to the signal collector;
the small-sized flyer sequentially contacts different laser beams when passing through the target surface, and the photoelectric detector sends a changed laser signal to the signal collector;
the signal collector converts the received laser signal into a digital image signal and sends the digital image signal to a computer; and the computer forms the continuous laser signals into a coordinate area and forms the changed laser signals into the motion track of the small-sized flyer in the coordinate area.
Preferably, whether the object passing through the light curtain target is the target object is distinguished according to the motion track, the position of the small-sized flying object passing through the light curtain target is described, and the process of assisting the light curtain target in accurate measurement is realized.
The technical effects of the invention include:
1. the rhombic grid type light curtain can enable an object passing through the light curtain target to touch more laser beams, so that the position of the object passing through the light curtain target can be determined more accurately.
2. By transmitting the signal to the computer, the contour image of the object passing through the light curtain target can be presented on the computer to judge whether the object passing through the light curtain target is the target measurement object.
Drawings
FIG. 1 is a schematic structural diagram of an auxiliary measuring device for a light curtain target according to the present invention.
Detailed Description
The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.
Fig. 1 is a schematic structural view of the light curtain target auxiliary measuring device of the present invention.
Light curtain target auxiliary measuring device is used for producing the lattice light curtain screen of rhombus grid formula laser ray, and the laser beam of contact when the small-size flight thing of increase passes through the target surface turns into digital image signal with the analog signal who receives, can distinguish whether the object through the light curtain target is target object to describe the position of small-size flight thing when passing through the light curtain target, realize the accurate measuring process of supplementary light curtain target.
Light curtain target auxiliary measuring device includes: two sets of light curtain target positioning imaging structures of a laser emitting device and a laser receiving device.
The laser emitting apparatus includes: the device comprises a transmitting mounting bracket 11, a transmitting laser 12 and a light curtain target frame 13; the emission mounting bracket 11 is fixed on the light curtain target frame 13, the emission mounting bracket 11 is provided with a plurality of first laser grooves 14, and the horizontal included angle of the first laser grooves 14 is 30 degrees; the light curtain target frame 13 is provided with a plurality of second laser grooves 15 in the vertical direction; the emitting laser 12 is installed at the end positions of the first laser groove 14 and the second laser groove 15, and laser emitted by the emitting laser 12 forms a rhombic grid type light curtain.
The laser receiving apparatus includes: a photoelectric detector 21, a signal collector 22 and a receiving and mounting bracket 23. The photoelectric detector 21 is arranged at the edge of the receiving and mounting bracket 23, the photoelectric detectors 21 are arranged on two right-angle edges of the receiving and mounting bracket 23, and the signal collector 22 is respectively connected with the photoelectric detector 21 and the computer 3 through signal lines. The emitting laser 12 and the photodetector 21 are opposite and respectively close to two ends of the first laser groove 14 and the second laser groove 15.
The photoelectric detector 21 detects the laser signal emitted by the receiving and emitting laser 12 and sends the laser signal to the signal collector 22, the signal collector 22 converts the received laser signal into a digital signal and transmits the digital signal to the computer 3, and the computer 3 is used for receiving the digital signal and drawing a graph by using points generated by the digital signal.
The use method of the light curtain target auxiliary measuring device comprises the following specific steps:
step 1: starting the emission laser 12, and emitting laser beams by the emission laser 12 to form grid type laser rays; the photoelectric detector 21 detects and receives the laser signal continuously emitted by the emitting laser 12 and sends the laser signal to the signal collector 22;
step 2: the small-sized flyer sequentially contacts different laser beams when passing through the target surface, and the photoelectric detector 21 sends the changed laser signals to the signal collector 22;
and step 3: the signal collector 22 converts the received laser signal into a digital image signal and sends the digital image signal to the computer 3; the continuous laser signal of the computer 3 forms a coordinate area, and the changed laser signal forms the motion track of the small-sized flyer in the coordinate area.
Whether the object passing through the light curtain target is the target object or not is distinguished according to the motion track, the position of the small-sized flyer passing through the light curtain target is described, and the process of assisting the light curtain target in accurate measurement is achieved.
The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (3)
1. Light curtain target auxiliary measuring device, its characterized in that includes: a transmitting laser device and a receiving laser device; the laser emitting apparatus includes: the device comprises a transmitting mounting bracket, a transmitting laser and a light curtain target frame; the emission mounting bracket is fixed on the light curtain target frame and is provided with a plurality of first laser grooves; the light curtain target frame is provided with a plurality of second laser grooves; the emitting lasers are arranged in the first laser groove and the second laser groove and are positioned at the end parts, and laser emitted by the emitting lasers forms a rhombic grid type light curtain; the laser receiving apparatus includes: the photoelectric detector, the signal collector and the receiving and mounting bracket; the plurality of photoelectric detectors are arranged on two right-angle edges at the edge of the receiving and mounting bracket, and the signal collector is respectively connected with the photoelectric detectors and the computer through signal lines; the positions of the emission laser and the photoelectric detector are opposite and are respectively close to two ends of the first laser groove and two ends of the second laser groove.
2. The light curtain target assistant measuring device of claim 1, wherein the first laser groove is horizontally inclined at an angle of 30 ° and the second laser groove is vertically oriented.
3. The use method of the light curtain target auxiliary measuring device comprises the following steps:
light curtain target auxiliary measuring device includes: a transmitting laser device and a receiving laser device; the laser emitting apparatus includes: the device comprises an emission mounting bracket, an emission laser and a light curtain target frame; the emission mounting bracket is fixed on the light curtain target frame and is provided with a plurality of first laser grooves; the light curtain target frame is provided with a plurality of second laser grooves; the emitting lasers are arranged in the first laser groove and the second laser groove and are positioned at the end parts, and laser emitted by the emitting lasers forms a rhombic grid type light curtain; the laser receiving apparatus includes: the photoelectric detector, the signal collector and the receiving and mounting bracket; the plurality of photoelectric detectors are arranged on two right-angle edges at the edge of the receiving and mounting bracket, and the signal collector is respectively connected with the photoelectric detectors and the computer through signal lines; the emitting laser and the photoelectric detector are opposite in position and respectively close to two ends of the first laser groove and the second laser groove;
starting a transmitting laser, and transmitting laser beams by the transmitting laser to form a rhombic grid type light curtain consisting of grid type laser rays; the photoelectric detector detects and receives continuous laser signals transmitted by the transmitting laser and sends the continuous laser signals to the signal collector;
the small flyer sequentially contacts different laser beams when passing through the target surface, and the photoelectric detector sends the changed laser signals to the signal collector;
the signal collector converts the received laser signal into a digital image signal and sends the digital image signal to a computer; the computer forms the continuous laser signal into a coordinate area and forms the changed laser signal into a motion track of the small-sized flyer in the coordinate area; whether the object passing through the light curtain target is a target object or not is distinguished according to the motion track, the position of the small-sized flyer when passing through the light curtain target is described, and the process of assisting the light curtain target in accurate measurement is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187265.6A CN111024978B (en) | 2019-11-28 | 2019-11-28 | Light curtain target auxiliary measuring device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187265.6A CN111024978B (en) | 2019-11-28 | 2019-11-28 | Light curtain target auxiliary measuring device and using method thereof |
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| Publication Number | Publication Date |
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| CN111024978A CN111024978A (en) | 2020-04-17 |
| CN111024978B true CN111024978B (en) | 2022-08-23 |
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| CN115876041A (en) * | 2023-01-12 | 2023-03-31 | 西安工业大学 | Supersonic velocity target outer trajectory parameter measuring device and measuring method |
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| CN102749470A (en) * | 2012-07-03 | 2012-10-24 | 南京理工大学 | Fragment velocity measuring device |
| CN103206986A (en) * | 2013-04-10 | 2013-07-17 | 中北大学 | Parameter testing system and method for high-speed moving object |
| CN104020312A (en) * | 2014-06-05 | 2014-09-03 | 湘潭大学 | Laser screen target tachymeter and ballistic trajectory capturing method |
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2019
- 2019-11-28 CN CN201911187265.6A patent/CN111024978B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6414747B1 (en) * | 2000-01-14 | 2002-07-02 | Charles E. Hardy | Infrared photodetector apparatus for measuring projectile velocity |
| CN2682371Y (en) * | 2004-03-17 | 2005-03-02 | 中国人民解放军63856部队 | Combined parallel laser light curtain target |
| JP2006170671A (en) * | 2004-12-13 | 2006-06-29 | Babcock Hitachi Kk | Device for measuring bullet position |
| CN102749470A (en) * | 2012-07-03 | 2012-10-24 | 南京理工大学 | Fragment velocity measuring device |
| CN103206986A (en) * | 2013-04-10 | 2013-07-17 | 中北大学 | Parameter testing system and method for high-speed moving object |
| CN104020312A (en) * | 2014-06-05 | 2014-09-03 | 湘潭大学 | Laser screen target tachymeter and ballistic trajectory capturing method |
| CN104792262A (en) * | 2015-04-20 | 2015-07-22 | 张雅声 | Photosensitive plane target |
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| CN111024978A (en) | 2020-04-17 |
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