CN217543153U - Portable laser velocimeter with angle compensation function - Google Patents
Portable laser velocimeter with angle compensation function Download PDFInfo
- Publication number
- CN217543153U CN217543153U CN202221654869.4U CN202221654869U CN217543153U CN 217543153 U CN217543153 U CN 217543153U CN 202221654869 U CN202221654869 U CN 202221654869U CN 217543153 U CN217543153 U CN 217543153U
- Authority
- CN
- China
- Prior art keywords
- shell
- laser
- sample
- measured
- compensation function
- 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.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of laser speed measurement, specifically be a portable laser velocimeter with angle compensation function, which comprises an outer shell, the body inboard of shell is provided with two light guide chamber, two objective, two are all installed in the inner chamber left side in light guide chamber the reflector is all installed on the inner chamber right side of objective, laser emitter is installed to the inner chamber bottom of shell, laser emitter is corresponding with a reflector, the front and back side of shell left side all is provided with laser receiver, the body inboard of shell is inlayed and is had gyroscope and data processor, and this device utilizes twice light to measure this device and the interval between the sample of being measured, then calculates the inclination of the sample of being measured according to this interval difference, then calculates the camber angle that the sample of being measured removed when measuring according to both sides, calculates the actual displacement of the sample of being measured according to camber angle and the sample of being measured at last and calculates the actual displacement of being measured sample.
Description
Technical Field
The utility model relates to a laser speed measurement technical field specifically is a portable laser velocimeter with angle compensation function.
Background
The laser speed measurement can carry out laser distance measurement with specific time interval twice on the measured object to obtain the moving distance of the measured object in the time interval, thereby obtaining the moving speed of the measured object. When the laser velocimeter is used for measuring the moving speed of an object, the accurate moving speed can be measured only by keeping the light of laser consistent with the moving direction of the object, and when the light of the laser is inconsistent with the moving direction of the object, the deviation value of the measurement result is increased along with the increase of the included angle between the light and the moving direction of the object.
Portable laser velocimeters are usually handheld, which causes difficulty in keeping consistent moving directions of objects by laser light; the conventional measuring method lacks an angle compensation function, as shown in FIG. 4, and measures the distance T between two light rays when measuring the movement of an object 1 And T 2 Then using T 2 －T 1 When the moving distance of the object is determined, the actual moving distance of the object is not T when the light of the laser is inconsistent with the movement of the object 2 －T 1 This can lead to measurement bias; the existing part of laser velocimeters are additionally provided with gyroscopes to measure the angles of the laser velocimeters, and the angles beta of two rays are obtained 1 And beta 2 Then, the length of L is calculated by using a trigonometric function, and the length of L is used as the actual moving distance of the object, but this is based on the fact that the object moves linearly, and when the object moves in an arc, the length of L is used as the actual moving distance of the object, which also causes the measured result to have deviation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable laser velocimeter with angle compensation function to solve the current laser velocimeter that provides in the above-mentioned background art when measuring the object that is pitch arc motion, the inaccurate problem of measuring result.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a portable laser velocimeter with angle compensation function, includes the shell, the body inboard of shell is provided with two light guide chambers, two objective, two are all installed in the inner chamber left side in light guide chamber the reflector No. one is all installed on the inner chamber right side of objective, laser emitter is installed to the inner chamber bottom of shell, laser emitter is corresponding with the reflector No. one, the front and back side of shell left side all is provided with laser receiver, the body inboard of shell is inlayed and is had gyroscope and data processor, gyroscope, laser emitter and laser receiver are connected with data processor through the wire respectively, the display screen is installed on the right side of shell, data processor passes through the wire and is connected with the display screen.
Preferably, a flat-plate spectroscope and a second reflective mirror are installed in the inner cavity of the shell, the flat-plate spectroscope is located on the upper side of the laser emitter, the second reflective mirror and the first reflective mirror on the rear side correspond to the flat-plate spectroscope, and the first reflective mirror on the front side corresponds to the second reflective mirror.
Preferably, an eyepiece group is arranged above the shell.
Preferably, the below detachable of shell is connected with the handle, install the battery in the inner chamber of handle, reset switch is installed in the outside of handle, gyroscope, reset switch and data processor are connected with the battery through the wire respectively, laser emitter passes through the wire and is connected with reset switch.
Preferably, the handle comprises a top shell, a bottom shell is detachably connected to the lower side of the top shell, and the top shell and the bottom shell are clamped on the outer side of the battery.
Compared with the prior art, the beneficial effects of the utility model are that:
this device utilizes this device of twice light measurement and the interval between the sample of being surveyed, then calculate the inclination of the sample of being surveyed according to this interval difference, then calculate the camber angle that the sample of being surveyed removed according to the inclination of the sample of being surveyed when measuring according to both sides, calculate the actual displacement distance of the sample of being surveyed according to camber angle and the displacement of the sample of being surveyed at last, calculate the translation rate of the sample of being surveyed according to the actual displacement distance of the sample of being surveyed, can be so that measuring result is more accurate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the front view of the present invention;
FIG. 3 is a schematic diagram of the light splitting path of the present invention;
FIG. 4 is a schematic diagram of a conventional laser velocimeter distance sampling;
FIG. 5 is a schematic diagram of distance sampling according to the present invention;
fig. 6 is the arc-shaped line arc angle schematic diagram of the present invention.
Fig. 7 is a schematic view of the inclination angle of the sample to be measured according to the present invention.
In the figure: the device comprises a shell 1, a display screen 2, an eyepiece group 3, a gyroscope 4, an objective lens 5, a laser receiving device 6, a first reflecting mirror 7, a laser emitter 8, a flat-panel spectroscope 9, a second reflecting mirror 10, a data processor 11, a battery 12, a handle 13 and a reset switch 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-7, the present invention provides a technical solution: a portable laser velocimeter with an angle compensation function comprises a shell 1, wherein two light guide cavities are arranged on the inner side of a body of the shell 1, an objective lens 5 is arranged on the left side of inner cavities of the two light guide cavities, a reflector 10 is arranged on the right side of the inner cavities of the two objective lenses, a laser emitter 8 is arranged at the bottom of the inner cavity of the shell 1, the laser emitter 8 corresponds to the reflector 10, laser emitted by the laser emitter 8 is reflected by the reflector 10 and then can be projected out through the objective lenses 5, laser receiving devices 6 are arranged on the front side and the rear side of the left side of the shell 1 respectively, the two laser receiving devices 6 are used for receiving laser projected out by the two objective lenses 5 respectively, a gyroscope 4 and a data processor 11 are embedded on the inner side of the body of the shell 1, the gyroscope 4 is used for measuring the inclination angle of the shell 1, the data processor 11 is used for measuring the moving speed of a measured sample, in the portable laser velocimeter, the portable laser velocimeter is used, the distance D between the two objective lenses 5 is known and fixed, and the distance measured by the two light rays of the portable laser velocimeter for the first time is T respectively 1a And T 1b The distance measured by the two rays of the device for the second time is T respectively 2a And T 2b The first measurement is carried out with the inclination angles of the two light rays being beta 1 The first measurement is carried out with the inclination angles of the two light rays being beta 2 The displacement L, L of the measured sample can be calculated by means of a trigonometric function 2 ＝T 1 2 +T 2 2 －2T 1 T 2 COS(β 1 －β 2 )，T 1 ＝(T 1a +T 1b )/2，T 2 ＝(T 1a +T 1b ) And 2, calculating an included angle alpha between the light and the measured sample by utilizing a trigonometric function 1 And alpha 2 ，tanα 1 ＝D/(|T 1a －T 1b |)，tanα 2 ＝D/(|T 2a －T 2b At this time, the inclination angle γ of the sample is measured when the sample is measured for the first time 1 ＝π－(α 1 +β 1 ) The inclination angle gamma of the measured sample in the second measurement 2 ＝π－(α 2 +β 2 ) And the arc angle theta = gamma of the rotation of the measured sample during the measurement at both sides 1 －γ 2 Then using trigonometric function L 2 ＝R 2 +R 2 －2R 2 COS theta can calculate the radius R of the rotation radian of the measured sample, and at the moment, the actual moving distance of the measured sample can be calculated, in the calculation mode, the light is in the same horizontal plane with the measured sample, when the light and the measured sample are not in the same plane, the light and the measured sample can be projected into the same plane for calculation, the gyroscope 4, the laser emitter 8 and the laser receiving device 6 are respectively connected with the data processor 11 through leads, after the laser emitter 8 emits laser light, the data processor 11 records the emitting time of the laser light, after the laser receiving device 6 receives the laser light, the data processor 11 records the emitting time of the laser light again, the gyroscope 4 transmits measured angle data to the data processor 11, the display screen 2 is installed on the right side of the shell 1, the display screen 2 is used for displaying the distance between the measured sample and the device and the moving speed of the measured sample, and the data processor 11 is connected with the display screen 2 through leads.
Install dull and stereotyped spectroscope 9 and No. two reflectors 7 in the inner chamber of shell 1, dull and stereotyped spectroscope 9 is located laser emitter 8's upside, no. two reflectors 7 and a rear side reflector 10 all correspond with dull and stereotyped spectroscope 9, a front side reflector 10 corresponds with No. two reflectors 7, can divide into two light with a light through dull and stereotyped spectroscope 9, wherein the light that passes dull and stereotyped spectroscope 9 directly throws away through the reflection of a rear side reflector 10, the light that passes through dull and stereotyped spectroscope 9 can throw away through the reflection of No. two reflectors 7 and a front side reflector 10 again, divide into two light with a light, make two lead optical cavity can jet out light simultaneously, and then can make two light measure the data of same time.
An eyepiece group 3 is arranged above the shell 1, and the eyepiece group 3 can facilitate a user to observe a laser projection point.
The below detachable of shell 1 is connected with handle 13, when not using this device, the dismantlement of handle 13, can conveniently put the storage to this device, install battery 12 in handle 13's the inner chamber, gyroscope 4 can be given to battery 12, reset switch 14, data processor 11, display screen 2 and the power supply of laser emitter 8, reset switch 14 is installed in handle 13's the outside, gyroscope 4, reset switch 14 and data processor 11 are connected with battery 12 through the wire respectively, laser emitter 8 passes through the wire and is connected with reset switch 14.
The handle 13 includes a top shell, a bottom shell detachably connected to a lower side of the top shell, and the top shell and the bottom shell are held outside the battery 12. The removable bottom shell facilitates replacement of the battery 12.
The working principle is as follows: the reset switch 14 is pressed, laser emitted by the laser emitter 8 is divided into two rays through the flat-plate spectroscope 9, one ray is reflected by the first reflecting mirror 10 at the rear side and then projected out of the objective lens 5 at the rear side, the other ray is reflected by the second reflecting mirror 7 and the first reflecting mirror 10 at the front side and then projected out of the objective lens 5 at the front side, the two rays can be emitted by a tested sample after impacting the tested sample, the two laser receiving devices 6 receive the reflected rays, and then the distance between the tested sample and the device is calculated according to the time difference;
the device is used again to measure the distance between the measured sample and the device, so that the moving distance of the measured sample in two times of measurement can be calculated, and then the moving speed of the measured sample can be calculated according to the time difference and the distance.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, it will be obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A portable laser velocimeter with angle compensation function, includes shell (1), its characterized in that: the utility model discloses a laser processing device, including shell (1), laser emitter (8), laser receiver (6), display screen (2) are installed to the body inboard of shell (1), two objective (5) are all installed in the inner chamber left side of leading the optical cavity, two reflector (10) are all installed on the inner chamber right side of objective, laser emitter (8) are installed to the inner chamber bottom of shell (1), laser emitter (8) are corresponding with reflector (10), the front and back side of shell (1) left side all is provided with laser receiver (6), the body inboard of shell (1) is inlayed and is had gyroscope (4) and data processor (11), gyroscope (4), laser emitter (8) and laser receiver (6) are connected with data processor (11) through the wire respectively, display screen (2) are installed on the right side of shell (1), data processor (11) are connected with display screen (2) through the wire.
2. The portable laser velocimeter with angle compensation function according to claim 1, characterized in that: a flat spectroscope (9) and a second reflective mirror (7) are installed in an inner cavity of the shell (1), the flat spectroscope (9) is located on the upper side of the laser emitter (8), the second reflective mirror (7) and a first reflective mirror (10) on the rear side correspond to the flat spectroscope (9), and the first reflective mirror (10) on the front side corresponds to the second reflective mirror (7).
3. The portable laser velocimeter with angle compensation function according to claim 1, characterized in that: an eyepiece group (3) is arranged above the shell (1).
4. The portable laser velocimeter with angle compensation function according to claim 1, characterized in that: the below of shell (1) is detachable to be connected with handle (13), install battery (12) in the inner chamber of handle (13), reset switch (14) are installed in the outside of handle (13), gyroscope (4), reset switch (14) and data processor (11) are connected with battery (12) through the wire respectively, laser emitter (8) are connected with reset switch (14) through the wire.
5. The portable laser velocimeter with angle compensation function according to claim 4, characterized in that: the handle (13) comprises a top shell, a bottom shell is detachably connected to the lower side of the top shell, and the top shell and the bottom shell are clamped outside the battery (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221654869.4U CN217543153U (en) | 2022-06-29 | 2022-06-29 | Portable laser velocimeter with angle compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221654869.4U CN217543153U (en) | 2022-06-29 | 2022-06-29 | Portable laser velocimeter with angle compensation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217543153U true CN217543153U (en) | 2022-10-04 |
Family
ID=83421681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221654869.4U Active CN217543153U (en) | 2022-06-29 | 2022-06-29 | Portable laser velocimeter with angle compensation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217543153U (en) |
-
2022
- 2022-06-29 CN CN202221654869.4U patent/CN217543153U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201242438Y (en) | Instrument for measuring laser reticule | |
| JP2002039748A (en) | Portable range finder | |
| CN207675932U (en) | MEMS galvanometers synchronizing device based on laser radar and laser radar | |
| CN209310804U (en) | A kind of Laser Line Marker based on unmanned plane | |
| JP2002214344A (en) | Range-finding device | |
| WO2022012031A1 (en) | Laser rangefinder employing two light sources | |
| CN217543153U (en) | Portable laser velocimeter with angle compensation function | |
| CN214895382U (en) | Portable laser velocimeter with angle compensation function | |
| CN113155060A (en) | Object surface flatness detection method and detection equipment thereof | |
| CN209991974U (en) | Laser measuring instrument | |
| CN214011518U (en) | Optical distance measuring instrument with switchable receiving aperture | |
| CN215340331U (en) | Handheld laser range finder | |
| CN215867127U (en) | Multifunctional distance measuring device | |
| CN208110042U (en) | Laser range finder intelligence instrument | |
| CN207501914U (en) | A kind of Multifunctional hand-held rangefinder | |
| CN206460169U (en) | Hand-hold Distance Finder | |
| JP2587237B2 (en) | Measurement method of machine center height of coaxial collimation rangefinder | |
| JP2003021514A (en) | Machine height measuring device for surveying machine and surveying machine using it and machine height measuring method for surveying machine | |
| JP3744639B2 (en) | Mechanical height measuring method and mechanical height measuring device | |
| US3878729A (en) | Instrument and method for measuring and indicating speed of a moving, sound-emitting object | |
| CN110081869A (en) | Throw line apparatus and laser level | |
| CN204758825U (en) | Laser altimeter | |
| CN217305524U (en) | Handheld laser range finder for enhancing range finding accuracy | |
| CN217820865U (en) | Hand-held type bridge construction laser range finder | |
| CN217689394U (en) | Open-air distancer with adjustable high accuracy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |