Holographic fogdrop spectrometer
By designing the optical path of the holographic droplet spectrometer and protecting it with a heating ring, the problems of accuracy and distribution in droplet spectrum measurement in existing technologies have been solved, enabling high-precision droplet spectrum observation that can be conducted unattended around the clock.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-04-10
AI Technical Summary
Existing technologies cannot accurately obtain the true distribution and concentration of fog droplets, the measurement accuracy needs to be verified, and the particles are easily broken, making it impossible to obtain the three-dimensional fog particle distribution.
A holographic droplet spectrometer, including a pulsed laser and a holographic camera, combined with an Nx lens and a reflector, is used to achieve particle imaging through optical path design. A heating ring is used to prevent particle breakage, thereby enhancing measurement accuracy and environmental adaptability.
It enables unattended, all-weather fog droplet spectrum observation, improves measurement accuracy and the acquisition of three-dimensional fog particle distribution, and enhances the instrument's rain and snow protection capabilities.
Smart Images
Figure CN224109287U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to cloud microphysics parameter observation technology field in cloud precipitation theory, specifically relates to a holographic fog droplet spectrometer. BACKGROUND
[0002] Due to the uncertainty of fog microphysics parameters in the fog theory understanding and parameterization scheme, for a long time, only fog droplet condensation and gravity coalescence growth are considered in the microphysical process of fog formation, and it is difficult to form a perfect theoretical system for the rapid growth of fog droplets in nature. At present, for the measurement of fog microphysics parameters, various active remote sensing detection and observation technologies have been developed at home and abroad. In these ground-based and space-based remote sensing detections, the power spectrum data obtained by detection is used to obtain the fog microphysics parameters by inversion, and the inversion process needs to assume the fog droplet spectrum and particle characteristics, which is usually assumed to be gamma distribution. Further, the real distribution and concentration of the fog droplet spectrum cannot be obtained, and the measurement accuracy needs to be verified. In the collision sampling type measurement method, particles larger than 100 μm will be broken when they hit the film, and the impact process will damage the particle characteristics, so this method has high accuracy in measuring particles with particle size of 10 μm to 100 μm, and it is difficult to measure smaller or larger particles. In the direct imaging and shadow projection type measurement method, photographic technology is used to obtain fog particle images on the image plane or particle gray distribution on the light array probe, and then image detection and processing technology is used to obtain particle morphology, diameter, particle spectrum and other fog microphysics parameters. However, this method can only obtain the two-dimensional integral effect of particle images in the measurement path, and cannot obtain the three-dimensional distribution of fog particles, and further cannot obtain the concentration information. In the gun type sampling measurement method, cloud droplet samples are obtained by using oil-coated or magnesium oxide glass sheets, and the preparation and post-processing work is tedious, and the three-dimensional spatial distribution of the fog droplet spectrum cannot be obtained. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at overcoming the problems of the prior art described in the background art, such as the inability to obtain the real distribution and concentration of the fog droplet spectrum, the need to verify the measurement accuracy, and the phenomenon of particle breakage.
[0004] To achieve the above purpose, the utility model provides a holographic fog droplet spectrometer, which comprises a pulse laser and a holographic photograph camera, and further comprises an N times lens.
[0005] The N times lens is arranged between the pulse laser and the holographic photograph camera.
[0006] The N times lens is coaxially arranged opposite to the pulse laser.
[0007] Further, the axis of the holographic photograph camera is perpendicular to the axis of the N times lens.
[0008] A first mirror is arranged between the holographic camera and the N times lens, and is used to change the direction of the light transmitted by the N times lens and transmit the light to the holographic camera.
[0009] Further, the pulse laser and the N times lens are respectively arranged in a first sleeve and a second sleeve arranged in a horizontal direction.
[0010] The first sleeve and the second sleeve are respectively fixed to the inner side of the top of the first vertical support arm and the second vertical support arm.
[0011] The first mirror is arranged on a 45° bracket of the light exit end of the second sleeve and the outer side of the top of the second vertical support arm, so that the reflecting surface of the first mirror forms a 45° angle with the horizontal line.
[0012] The holographic camera is fixed in the second vertical support arm and receives the reflected light from the first mirror.
[0013] Further, the lower ends of the first vertical support arm and the second vertical support arm are respectively fixed to the upper end of a connecting pipe through an inwardly bent connecting sleeve, and the lower end of the connecting pipe is fixed to a support base.
[0014] Further, the support base is composed of a base, a bottom cover fixed to the base, a barrel fixed to the bottom cover, and an upper cover fixed to the top of the barrel.
[0015] The lower end of the connecting pipe is fixed to the upper cover.
[0016] Further, the upper cover is a dome.
[0017] Further, the barrel is provided with a control circuit board, a power module below the control circuit board, and an optical transceiver.
[0018] Further, the inner end of the first sleeve is sequentially provided with a first protective glass and a first heating ring from outside to inside, and the first heating ring is located between the first protective glass and the light exit end of the pulse laser.
[0019] The inner end of the second sleeve is sequentially provided with a second protective glass and a second heating ring from outside to inside, and the second heating ring is located between the second protective glass and the light exit end of the N times lens.
[0020] The advantages of the utility model are: rain and snow prevention, unattended function. The light path is transversely arranged and the rain and snow prevention structure is used, so that the instrument has all-weather observation capability. The waterproof material of the light window and the new coating process, and the application of long-distance data transmission technology make the instrument have unattended observation function. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a cross-sectional view of a holographic droplet spectrometer.
[0022] Figure 2 is an enlarged view of the top of a holographic droplet spectrometer.
[0023] Figure 3 is a perspective view of a holographic droplet spectrometer.
[0024] Figure 4 is a bottom view of a holographic droplet spectrometer.
[0025] BRIEF DESCRIPTION OF DRAWINGS
[0026] 1, pulse laser; 2, hologram photograph camera; 3, N times lens; 4, first mirror; 5, first sleeve; 6, second sleeve; 7, first vertical support arm; 8, second vertical support arm; 9, 45° bracket; 10, connecting sleeve; 11, connecting pipe; 12, base; 13, bottom cover; 14, barrel body; 15, upper cover; 16, control circuit board; 17, power module; 18, optical transceiver; 19, first protective glass; 20, first heating ring; 21, second protective glass; 22, second heating ring; 23, optical fiber power combination socket; 24, waterproof power socket; 25, circuit board transition plate; 26, power indicator light; 27, working switch. DETAILED DESCRIPTION
[0027] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined purpose, the specific implementation, structural features and effects of the utility model will be described in detail below in combination with the drawings and examples.
[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0029] In the description of the utility model, it should be understood that the orientations or position relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "alignment", "overlap", "bottom", "inner", "outer" and the like are the orientations or position relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.
[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0031] Figure 1 The image shows a holographic droplet spectrometer, which includes a pulsed laser 1 and a holographic camera 2, as well as an N-magnification lens 3, such as a 5x lens, a 10x lens, etc. The appropriate magnification lens can be selected according to the application environment to meet the set accuracy or clarity requirements.
[0032] In this embodiment, a 10x lens 3 is selected and is positioned between the pulsed laser 1 and the holographic camera 2; the 10x lens 3 is coaxially and opposite to the pulsed laser 1, specifically as follows: Figure 1 As shown, the two are located on the same horizontal line and are coaxially arranged, which is consistent with the existing imaging methods. Here, the 10x lens 3 is mainly used to magnify the particles before imaging, so that the holographic camera 2 can obtain a clearer particle image. Furthermore, in this embodiment, to reduce the adverse effects on environmental particles, specifically to reduce wind resistance and particle breakage, the overall shape of the droplet spectrometer provided in this embodiment is streamlined. Based on this, the axis of the holographic camera 2 provided in this embodiment is perpendicular to the axis of the 10x lens 3. Thus, a first reflector 4 is provided between the holographic camera 2 and the 10x lens 3. This first reflector 4 is used to change the direction of the light transmitted from the 10x lens 3 before transmitting it to the holographic camera 2. Figure 1 As shown, the light emitted from the horizontally transmitted 10x lens 3 is reflected at 45° and then incident vertically downwards onto the holographic camera 2.
[0033] Combination Figure 3 As can be seen, the pulsed laser 1 and the 10x lens 3 provided in this embodiment are respectively assembled in the first sleeve 5 and the second sleeve 6 which are arranged horizontally opposite each other; and the first sleeve 5 and the second sleeve 6 are respectively fixed to the top inner side of the first vertical support arm 7 and the second vertical support arm 8; while the first reflector 4 is arranged on the top outer side of the second vertical support arm 8 and the 45° bracket 9 at the light emission end of the second sleeve 6, so that the reflective surface of the first reflector 4 forms a 45° angle with the horizontal line; the first reflector 4 is fixed on the bracket 9 by a reflector retaining ring.
[0034] The holographic camera 2 is fixed inside the second vertical support arm 8 and receives reflected light from the first reflector 4.
[0035] The lower ends of the first vertical support arm 7 and the second vertical support arm 8 are fixedly connected with the upper end of a connecting pipe 11 through an inwardly bent connecting sleeve 10, and the lower end of the connecting pipe 11 is fixed on a support base.
[0036] The support base is composed of a base 12, a bottom cover 13 fixed on the base 12, a barrel 14 fixed on the bottom cover 13, and an upper cover 15 fixed on the top of the barrel 14. Figure 1 , 3 The lower end of the connecting pipe 11 is fixed on the upper cover 15, and the upper cover 15 is designed as a dome in order to meet the streamline design of the overall shape.
[0037] The barrel 14 is provided with a control circuit board 16, a power module 17 and an optical transceiver 18 below the control circuit board 16, wherein the control circuit board 16 is installed above the power module 17 through a circuit board transition plate 25, and specifically, the power module 17 and the optical transceiver are fixed on the bottom of the barrel 14. The circuit board transition plate 25 is fixed on the bottom of the barrel 14 through a support.
[0038] As shown in Figure 2 , the inner end of the first sleeve 5 is sequentially provided with a first protective glass 19 and a first heating ring 20 from outside to inside, and the first heating ring 20 is located between the first protective glass 19 and the light emitting end of the pulse laser 1. The inner end of the second sleeve 6 is sequentially provided with a second protective glass 21 and a second heating ring 22 from outside to inside, and the second heating ring 22 is located between the second protective glass 21 and the light emitting end of the 10X lens 3. The heating ring can heat the air particles or water mist particles, so that they have a relatively ideal temperature, ensuring that accurate measurement parameters are obtained, and the application environment of the holographic mist droplet spectrometer provided in the embodiment can be appropriately expanded.
[0039] As shown in Figure 3 and Figure 4 , the power indicator 26 and the working switch 27 of the holographic mist droplet spectrometer provided in the embodiment are arranged on the barrel 14, and the optical fiber power combination socket 23 and the waterproof power socket 24 are arranged on the bottom of the base 12, which is convenient for connecting the barrel from the bottom of the base 12 upwards, and connecting with the optical transceiver and the power module.
[0040] Finally, it should be noted that the first sleeve 5 and the second sleeve 6 have the function of preventing rain and snow, and the setting of each heating ring also has the function of preventing low temperature.
Claims
1. A holographic droplet spectrometer comprising a pulsed laser (1) and a hologram taking camera (2), characterized in that: Also comprising an N times lens (3); The N times lens (3) is arranged between the pulse laser (1) and the hologram photographing camera (2); The N times lens (3) is coaxially arranged opposite to the pulse laser (1).
2. The holographic droplet spectrometer according to claim 1, characterized in that: The axis of the hologram photographing camera (2) is perpendicular to the axis of the N times lens (3); A first reflector (4) is arranged between the hologram photographing camera (2) and the N times lens (3), which is used for changing the direction of the transmission light of the N times lens (3) and transmitting it to the hologram photographing camera (2).
3. The holographic droplet spectrometer according to claim 2, characterized in that: The pulse laser (1) and the N times lens (3) are respectively arranged in a first sleeve (5) and a second sleeve (6) arranged horizontally opposite to each other; The first sleeve (5) and the second sleeve (6) are respectively fixed on the top inner side of a first vertical support arm (7) and a second vertical support arm (8); The first reflector (4) is arranged on a 45° bracket (9) on the top outer side of the second vertical support arm (8) and the light exit end of the second sleeve (6), so that the reflecting surface of the first reflector (4) forms a 45° angle with the horizontal line; The hologram photographing camera (2) is fixed in the second vertical support arm (8) and receives the reflected light from the first reflector (4).
4. The holographic droplet spectrometer according to claim 3, characterized in that: The lower ends of the first vertical support arm (7) and the second vertical support arm (8) are respectively fixedly connected with the upper end of a connecting pipe (11) through an inwardly bent connecting sleeve (10), and the lower end of the connecting pipe (11) is fixed on a support base.
5. The holographic droplet spectrometer according to claim 4, characterized in that: The support base is composed of a base (12), a bottom cover (13) fixed on the base (12), a barrel body (14) fixed on the bottom cover (13), and an upper cover (15) fixed on the top of the barrel body (14). The lower end of the connecting pipe (11) is fixed on the upper cover (15).
6. The holographic droplet spectrometer according to claim 5, characterized in that: The upper cover (15) is a dome.
7. The holographic droplet spectrometer according to claim 5 or 6, characterized in that: The barrel body (14) is provided with a control circuit board (16), a power module (17) and an optical transceiver (18) below the control circuit board (16).
8. The holographic droplet spectrometer according to any one of claims 3 to 5, characterized in that: The inner end of the first sleeve (5) is sequentially provided with a first protective glass (19) and a first heating ring (20) from outside to inside, and the first heating ring (20) is located between the first protective glass (19) and the light exit end of the pulse laser (1); The inner end of the second sleeve (6) is sequentially provided with a second protective glass (21) and a second heating ring (22) from outside to inside, and the second heating ring (22) is located between the second protective glass (21) and the light exit end of the N times lens (3).