CN220419566U - Receiving system of TOF narrow window non-coaxial laser scanner - Google Patents
Receiving system of TOF narrow window non-coaxial laser scanner Download PDFInfo
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- CN220419566U CN220419566U CN202321984994.6U CN202321984994U CN220419566U CN 220419566 U CN220419566 U CN 220419566U CN 202321984994 U CN202321984994 U CN 202321984994U CN 220419566 U CN220419566 U CN 220419566U
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- 230000001681 protective effect Effects 0.000 claims 2
- 230000010354 integration Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000003071 parasitic effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
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Abstract
The application relates to a TOF narrow window non-coaxial laser scanner receiving system, which comprises a laser emitting system, a receiving convex lens capable of focusing laser beams, a reflecting mirror and a receiving sensor; the laser emission system is arranged on the receiving convex lens, the receiving convex lens is provided with a narrow window for emitting the converged laser beams, the narrow window faces the reflecting mirror, and the receiving sensor is arranged right below the reflecting mirror; the laser emission system emits laser beams towards an external target object, the laser beams reach the external target object and then are reflected to the receiving convex lens through diffuse reflection of the external target object, and the laser beams reach the reflecting mirror after being condensed by the receiving convex lens and are reflected to the receiving sensor through optical path conversion; in the process, photoelectric conversion is not needed, so that the error rate and the data loss risk of the measured data are reduced, and the reliability of the measured data is improved; and the device is saved, the volume is small, and the integration level is high.
Description
Technical Field
The application relates to the technical field of laser radars, in particular to a TOF narrow window non-coaxial laser scanner receiving system.
Background
Currently known narrow window coaxial, narrow window non-coaxial, coaxial mirror solution transceiver systems, wherein the narrow window is coaxial, suffer from the drawback: the receiving and transmitting module is used for transmitting the ranging data collected through mechanical rotation downwards to the fixed base data processing center through photoelectric conversion, and then forwarding and outputting the data; in the photoelectric conversion circuit, the voltage generated by the photosensitive diode can be changed along with the change of illumination intensity due to the difference of the device and the installation, and a voltage pulse width adjustment station after photoelectric conversion is needed for the stability of data transmission, so that the size is large; in addition, the infrared light emitting diode and the photosensitive diode device are easy to lose after long-time operation, so that data transmitted downwards are lost, and the reliability of measured data is not high.
Disclosure of Invention
Based on this, it is necessary to provide a TOF narrow window non-coaxial laser scanner receiving system including a laser emitting system, a receiving convex lens capable of focusing a laser beam, a reflecting mirror, a receiving sensor; the laser emission system is arranged on the receiving convex lens, the receiving convex lens is provided with a narrow window for emitting converged laser beams, the narrow window faces the reflecting mirror, and the receiving sensor is arranged under the reflecting mirror;
the laser emission system emits a laser beam towards an external target object, the laser beam reaches the external target object and then is reflected to the receiving convex lens through diffuse reflection of the external target object, and the laser beam reaches the reflecting mirror after being condensed by the receiving convex lens and is reflected to the receiving sensor through light path conversion.
The receiving convex lens is in a flat fan shape, one end of the receiving convex lens is provided with the narrow window, the other end of the receiving convex lens is provided with the circular arc convex lens used for converging laser beams, and the narrow window faces the circular arc convex lens.
The laser emission system comprises a laser emission tube and a collimating lens, wherein a center hole is formed in the center of the circular arc-shaped convex lens, the laser emission tube is embedded in the center hole, and laser beams emitted by the laser emission tube reach the external target after being collimated by the collimating lens.
And the laser emission tube is provided with a parasitic light baffle.
The laser emission system comprises a first circuit board, wherein the receiving convex lens is horizontally arranged on the first circuit board, the laser emission system comprises a laser emission light source circuit board, and the laser emission light source circuit board is connected with the first circuit board.
The first circuit board is provided with a through hole for the laser beam to pass through.
The laser light source device comprises a laser light source device, a laser emission system, a receiving convex lens and a receiving sensor, and is characterized by further comprising a fixed base, wherein the fixed base comprises a base and an optical protection cover, the base and the optical protection cover enclose to form a closed space, and the reflecting mirror, the laser emission system, the receiving convex lens and the receiving sensor are all arranged in the closed space.
The base is provided with a second circuit board, the first circuit board and the second circuit board are arranged in parallel up and down, and the receiving sensor is arranged on the second circuit board.
The LED display device comprises a first circuit board, a reflector, a receiving convex lens, a rotating platform and a light transmission channel, wherein the rotating platform comprises a support, the first circuit board, the reflector and the receiving convex lens are arranged on the support, and the middle of the support is provided with the light transmission channel.
The base is provided with a stator and a wireless transmitting coil, and the rotary platform is provided with a rotor and a wireless receiving coil.
Compared with the prior art, the utility model has the advantages that:
the receiving sensor is arranged under the reflecting mirror, the laser beam emitted by the laser emission system returns to the receiving convex lens through diffuse reflection of an external target object, and after being focused by the receiving convex lens, the laser beam arrives at the reflecting mirror from the narrow window and then vertically and downwards emits through the conversion light path to directly arrive at the receiving sensor, photoelectric conversion is not needed in the process, the error rate of measured data and the risk of data loss are reduced, and the reliability of the measured data is improved; and the device is saved, the volume is small, and the integration level is high.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a TOF narrow window non-coaxial laser scanner receiving system according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a front view structure of a TOF narrow window non-coaxial laser scanner receiving system according to an embodiment of the present application;
FIG. 3 is a schematic top view of the structure in the optical protection cover according to the embodiment of the present application.
Reference numerals illustrate:
1. a reflecting mirror; 2. receiving a convex lens; 20. arc convex lens; 3. a veiling glare baffle; 4. a laser emission system; 40. a laser beam; 5. a first circuit board; 6. a through hole; 7. a receiving sensor; 8. an optical protection cover; 9. a second circuit board; 10. and (5) a base.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
A TOF narrow window non-coaxial laser scanner receiving system comprises a laser emitting system 4, a receiving convex lens 2 capable of focusing laser beams, a reflecting mirror 1 and a receiving sensor 7; the laser emission system 4 is arranged on the receiving convex lens 2, the receiving convex lens 2 is arranged in a flat fan shape, one end of the receiving convex lens 2 is provided with a narrow window for emitting the converged laser beam 40, the other end of the receiving convex lens is provided with a circular arc convex lens 20 for converging the laser beam 40, one end of the narrow window is arranged towards the middle position of the circular arc convex lens 20, the other end of the narrow window is arranged towards the reflector 1, and the receiving sensor 7 is arranged right below the reflector 1;
the laser emission system emits the laser beam 40 towards the external target, the laser beam 40 returns to the receiving convex lens 2 through diffuse reflection of the external target after reaching the external target, the laser beam reaches the reflecting mirror 1 after being condensed by the receiving convex lens 2, and the laser beam is reflected to the receiving sensor 7 through the conversion light path, so that the photoelectric data conversion of the quality inspection of the rotary ranging module and the data processing center of the base 10 is canceled, devices are saved, and the error rate of measured data and the data loss risk are reduced.
The receiving sensor 7 is arranged right below the reflecting mirror 1, the laser beam 40 emitted by the laser emission system 4 is reflected back to the receiving convex lens 2 through the diffuse reflection of an external object, and is vertically emitted downwards through a conversion light path to directly reach the receiving sensor 7 after reaching the reflecting mirror 1 from the narrow window after being focused by the receiving convex lens 2, photoelectric conversion is not needed in the process, the error rate of measured data and the risk of data loss are reduced, and the reliability of the measured data is improved; and the device is saved, the volume is small, and the integration level is high.
In this embodiment, the laser emission system 4 is disposed in the optical protection cover 8, the laser emission system 4 includes a laser emission tube and a collimating lens, the laser emission tube is disposed at a central hole of the receiving convex lens 2, the laser emission tube is further provided with a parasitic light baffle 3, the laser beam 40 emitted by the laser emission tube passes through the collimating lens to be collimated and reaches an external target object after passing through the parasitic light baffle 3, and the laser beam 40 diffusely reflected by the external target object passes through the parasitic light baffle 3 again, so as to prevent the emitted laser from generating parasitic light to be received by the receiving convex lens 2 through diffuse reflection of the optical protection cover 8.
In this embodiment, the laser transmitter further includes a first circuit board 5, and the receiving convex lens 2 is horizontally disposed on the first circuit board 5, so that the receiving convex lens 2 receives the laser signal emitted back in the horizontal direction, and the laser transmitter is embedded in the central hole of the receiving convex lens 2, so that the coaxial horizontal laser transceiving optical paths and the non-coaxial vertical transceiving optical paths are realized, and the laser transmitter has high integration and small volume.
The laser emission system 4 comprises a laser emission light source circuit board which is connected with the first circuit board 5; the first circuit board 5 is provided with a through hole 6 for the laser beam 40 to pass through, in this embodiment, the mirror 1 is disposed directly above the first circuit board 5 and is disposed at the right center of the first circuit board 5, the through hole 6 is disposed directly below the mirror 1 and is located between the mirror 1 and the receiving sensor 7, the mirror 1 emits the focused laser signal vertically downward, and the laser signal passes through the through hole 6 to directly reach the receiving sensor 7.
In this embodiment, still include unable adjustment base, unable adjustment base includes base 10 and optical protection cover 8, optical protection cover 8 cover is established on base 10, make base 10 and optical protection cover 8 enclose and close and form airtight space, rotary platform, speculum 1, laser emission system 4, receive convex lens 2, receiving sensor 7 all locate airtight space in, optical protection cover 8 can protect the structure of locating in airtight space to can prevent the influence of visible light to the range finding signal.
The base 10 is provided with a second circuit board 9, the second circuit board 9 and the first circuit board 5 are arranged in parallel up and down, and the receiving sensor 7 is arranged on the second circuit board 9.
In this embodiment, the first circuit board 5 drives the circuit, controls the brushless motor to rotate, controls the power supply frequency, receives the emitted laser signal, the optical coupler angle detection unit, provides an external connection data transmission interface, and the like; the second circuit board 9 drives a circuit to control a laser emitting system, an optical coupler angle detection unit, a wireless power supply and power supply receiving circuit and the like.
In this embodiment, the laser beam laser device further comprises a rotating platform, wherein the rotating platform comprises a bracket, the first circuit board 5, the reflecting mirror 1, the laser emission system 4 and the receiving convex lens 2 are arranged on the bracket, and an optical transmission channel is arranged in the middle of the bracket, so that the laser beam 40 reflected by the reflecting mirror 1 can pass through to reach the receiving sensor 7 on the second circuit board 9; the base 10 is provided with stator and wireless transmitting coil, and rotary platform is provided with rotor box wireless receiving coil, and during operation provides rotary power through stator and rotor cooperation, makes whole rotary platform realize 360 full visual angle scans, provides electric power through wireless transmitting coil, wireless receiving coil cooperation, and speculum 1 sets up on rotary platform, has realized light path receiving and dispatching synchronization to do not need extra motor drive speculum 1 to rotate.
In this embodiment, in order to determine the angle of laser scanning, an angle checking unit (code wheel) is provided between the stationary base and the rotary table.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. The receiving system of the TOF narrow window non-coaxial laser scanner is characterized by comprising a laser emitting system, a receiving convex lens capable of focusing laser beams, a reflecting mirror and a receiving sensor; the laser emission system is arranged on the receiving convex lens, the receiving convex lens is provided with a narrow window for emitting converged laser beams, the narrow window faces the reflecting mirror, and the receiving sensor is arranged under the reflecting mirror;
the laser emission system emits a laser beam towards an external target object, the laser beam reaches the external target object and then is reflected to the receiving convex lens through diffuse reflection of the external target object, and the laser beam reaches the reflecting mirror after being condensed by the receiving convex lens and is reflected to the receiving sensor through light path conversion.
2. The receiving system of a TOF narrow window non-coaxial laser scanner according to claim 1, wherein said receiving convex lens is in a shape of a flat fan, one end of said receiving convex lens is provided with said narrow window, the other end of said receiving convex lens is provided with a circular arc convex lens for converging a laser beam, said narrow window is arranged toward said circular arc convex lens.
3. The receiving system of the TOF narrow window non-coaxial laser scanner according to claim 2, wherein the laser emission system comprises a laser emission tube and a collimating lens, a center hole is formed in the center of the circular arc-shaped convex lens, the laser emission tube is embedded in the center hole, and a laser beam emitted by the laser emission tube reaches the external target after being collimated by the collimating lens.
4. A TOF narrow window non-coaxial laser scanner receiving system according to claim 3, wherein said laser light emitting tube is provided with a veiling glare baffle.
5. The TOF narrow window non-coaxial laser scanner receiving system of claim 1, further comprising a first circuit board, said receiving convex lens being disposed flat on said first circuit board, said laser emitting system comprising a laser emitting light source circuit board, said laser emitting light source circuit board being connected to said first circuit board.
6. The TOF narrow window non-coaxial laser scanner receiving system of claim 5, wherein said first circuit board defines a through hole for said laser beam to pass through.
7. The TOF narrow window non-coaxial laser scanner receiving system of claim 5, further comprising a stationary base including a base and an optical protective cover, wherein the base and the optical protective cover enclose a closed space, and wherein the mirror, the laser emitting system, the receiving convex lens, and the receiving sensor are all disposed in the closed space.
8. The receiving system of claim 7, wherein the base is provided with a second circuit board, the first circuit board and the second circuit board are arranged in parallel, and the receiving sensor is arranged on the second circuit board.
9. The TOF narrow window non-coaxial laser scanner receiving system of claim 7, further comprising a rotating platform including a bracket, said first circuit board, said mirror, said receiving convex lens mounted on said bracket, a light transmission channel provided in a middle portion of said bracket.
10. The TOF narrow window non-coaxial laser scanner receiving system of claim 9, wherein said base is provided with a stator and a wireless transmit coil, and said rotating platform is provided with a rotor and a wireless receive coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321984994.6U CN220419566U (en) | 2023-07-26 | 2023-07-26 | Receiving system of TOF narrow window non-coaxial laser scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321984994.6U CN220419566U (en) | 2023-07-26 | 2023-07-26 | Receiving system of TOF narrow window non-coaxial laser scanner |
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| Publication Number | Publication Date |
|---|---|
| CN220419566U true CN220419566U (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321984994.6U Active CN220419566U (en) | 2023-07-26 | 2023-07-26 | Receiving system of TOF narrow window non-coaxial laser scanner |
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| Country | Link |
|---|---|
| CN (1) | CN220419566U (en) |
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- 2023-07-26 CN CN202321984994.6U patent/CN220419566U/en active Active
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