Shadowless lighting device for light supplement of camera shooting direct-reading remote water meter

Abstract

The utility model provides a shadowless lighting device for light supplementation of a camera shooting direct-reading remote water meter, which relates to the technical field of light supplementation of water meters and comprises a lampshade, a light source, a polygon prism reflector and a camera, and a reflector for reflecting light is arranged on the inner surface of the lampshade. Through the design of the polygon prism and the parabolic reflector, an LED point light source is effectively converted into a uniform surface illumination light source, the problem that light spots and shadows are likely to be generated in an existing light supplementing mode is solved, the clear and appropriate light supplementing effect is provided, the image quality is obviously improved, and the light supplementing device has the advantages of being simple in structure and easy to achieve.

Description

Technical Field

[0001] The utility model relates to the technical field of supplementary lighting for water meters, in particular to a shadowless lighting device for supplementary lighting of remote water meters directly read by videography. Background Art

[0002] The camera direct-reading remote water meter improves the accuracy and efficiency of water meter readings through automation and remote monitoring technology, providing strong support for water resource management and energy conservation and emission reduction.

[0003] In the prior art, camera-based direct-reading remote water meter is a technical solution that uses image acquisition and processing technology to realize remote and automatic reading of water meter readings. This technology is being widely used in water metering and charging in various places. However, in actual applications, due to the limitations of ambient light conditions, it is often difficult to obtain clear and usable water meter reading information by directly acquiring images of the water meter.

[0004] To solve the problem of insufficient lighting, two main fill-in lighting methods are used in the prior art: one is to use a fill-in light in front of the water meter to improve image quality by front fill-in lighting; the other is to use a backlight source behind the camera. However, front fill-in lighting is prone to occlusion, while back fill-in lighting has the problem of uneven light source shadows. Both of these fill-in lighting methods will have a negative impact on image quality, increase the difficulty of subsequent image processing, and reduce reading accuracy. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a shadowless lighting device for fill lighting of a water meter directly read by camera and remotely transmitted. Through the design of a multi-prism and a parabolic reflector, the LED point light source is effectively converted into a uniform surface light source, solving the problems of light spots and shadows easily produced by the existing fill lighting methods, providing a clear and appropriate fill lighting effect, significantly improving the image quality, and having a simple structure and easy implementation.

[0006] In order to solve the above technical problems, the utility model solves the problem that the existing fill light methods have a negative impact on image quality, increase the difficulty of subsequent image processing, and reduce the accuracy of readings through the following technical solutions.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The invention discloses a shadowless lighting device for supplementary lighting of a remote water meter for direct reading by video recording, comprising a lampshade, a light source, a multi-prism reflector and a camera. The inner surface of the lampshade is provided with a reflector for reflecting light. A support column is arranged inside the lampshade. The light source, the multi-prism reflector and the camera are sequentially mounted on the support column along the opening direction of the lampshade. The light emitted by the light source is distributed in a spherical shape and is reflected by the multi-prism reflector and the reflector.

[0009] Preferably, the axis of the support column is arranged to be consistent with the opening direction of the lampshade.

[0010] Preferably, the mirror surface of the reflector is in a parabolic shape, the polygonal reflector is a high-reflectivity cone with a polygonal structure, and the geometric center of the polygonal reflector coincides with the focus of the reflector.

[0011] Preferably, it also includes a PCB board for power supply and signal transmission, the PCB board is fixedly connected to the lampshade and located at the geometric center of the reflector, and the support column passes through the PCB board and is connected to the lampshade.

[0012] Preferably, the support column is a hollow structure, and the PCB board has wires connected to the light source and the camera, and the wires are passed through the support column to supply power to the light source and the camera.

[0013] Preferably, a connecting sleeve is provided on the back of the camera, the polygonal reflector is sleeved on the end of the connecting sleeve opposite to the camera, and the supporting column sequentially penetrates the polygonal reflector and the connecting sleeve and is then installed on the back of the camera.

[0014] Preferably, it also includes a protection plate, which is installed at the opening of the lampshade and is made of a highly light-transmitting material.

[0015] Preferably, a mounting groove matched with the outer diameter of the camera is provided at the center of the protective plate, and the camera is embedded in the protective plate through the mounting groove.

[0016] Preferably, side panels with openings are installed on both sides of the camera, card plug-ins are provided on both sides of the installation slot, and the other end of the card plug-in is inserted into the opening.

[0017] Preferably, a water meter body is provided below the lampshade, and the water meter body and the lampshade are connected via a bracket.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The shadowless lighting device for video-based direct-reading remote water meter fill lighting provided in the present application effectively converts the LED point light source into a uniform surface light source through the design of a multi-prism and a parabolic reflector, thereby solving the problems of light spots and shadows that are easily generated by existing fill lighting methods, providing a clear and appropriate fill lighting effect, significantly improving the image quality, and having a simple structure and easy implementation.

[0020] The present application realizes the functions of power supply, control and signal processing by setting up a PCB board. The PCB board is located at the center point of the reflector, which not only does not affect the transmission and reflection of light, but also ensures that the transmission path of light remains intact and will not be obstructed.

[0021] The present application achieves a stable assembly by providing a connecting sleeve, which is installed on the back of the camera, and by putting a polygonal mirror reflector on the connecting sleeve, while ensuring that the relative position between the polygonal mirror reflector and the camera does not change.

[0022] The present application provides a protective plate and installs the protective plate at the opening of the lampshade, which can effectively protect the lampshade such as the reflector, the multi-prism reflector and the light source, avoid being affected by the external environment, and reduce potential safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the split overall structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the partial structure of the front cross section of the utility model;

[0027] Figure 4 It is a schematic diagram of the partial structure of the front cross section of the utility model;

[0028] Figure 5 This is a schematic diagram of the partial structure of the utility model at the protection plate and the camera when viewed from above;

[0029] Figure 6 It is a schematic diagram of the partial structure of the protective plate of the utility model when viewed from above;

[0030] Figure 7 It is a schematic diagram of light propagation when a point light source is converted into a plane light source in the utility model.

[0031] Explanation of the figure numbers: 1. Lampshade; 101. Water meter body; 102. Bracket; 2. Light source; 3. Polygonal reflector; 4. Camera; 401. Side panel; 402. Opening; 5. Reflector; 6. Support column; 7. PCB board; 8. Connecting sleeve; 9. Protective plate; 901. Mounting slot; 902. Card plug-in. DETAILED DESCRIPTION

[0032] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0033] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0034] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0035] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0036] See also Figure 1-Figure 7 The invention discloses a shadowless lighting device for supplementary lighting of a remote water meter for direct reading by video, comprising a lampshade 1, a light source 2, a multi-prism reflector 3 and a camera 4. The inner surface of the lampshade 1 is provided with a reflector 5 for reflecting light. A support column 6 is provided inside the lampshade 1. The light source 2, the multi-prism reflector 3 and the camera 4 are sequentially installed on the support column 6 along the opening direction of the lampshade 1. The light emitted by the light source 2 is distributed in a spherical shape and is reflected by the multi-prism reflector 3 and the reflector 5.

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7The shadowless lighting device for video direct reading remote water meter supplementary lighting of the present application is mainly composed of a lampshade 1, a light source 2, a multi-prism reflector 3 and a camera 4. When in use, the light source 2 is first started, and the spherically distributed light emitted by the light source 2 is directed to the reflector 5 and the multi-prism reflector 3, and is output as a shadowless surface light source after reflection. Among them, the light directly directed to the reflector 5 is reflected once and directly emitted from the opening of the lampshade 1; and the light directed to the multi-prism reflector 3 can use its high reflection function to reflect the light to the surroundings, and is reflected twice by the reflector 5. Finally, the light is still concentrated and output from the opening of the lampshade 1, so that the overall irradiation light is more uniform. Uniform; the light source 2, the polygonal reflector 3 and the camera 4 are sequentially mounted on the support column 6 along the opening direction of the lampshade 1, so as to ensure that they are firmly supported during use without affecting the fill light effect; in this way, the point light from the light source 2 is converted into a uniform surface light source output after being reflected by the polygonal reflector 3 and / or the reflector 5, so as to perform fill light, thereby achieving a uniform and shadowless fill light effect for the object within the collection range of the camera 4, such as the surface of the water surface, thereby effectively improving the quality of the image collected by the camera 4, enhancing the accuracy of subsequent image processing, and avoiding the influence of direct irradiation of the light source.

[0038] It should be specially noted that the coaxial design of the camera 4 and the light source 2, and the location of the camera 4 between the light source 2 and the illuminated object, can effectively utilize the camera 4 itself to block direct light from the light source 2, thereby eliminating the phenomenon of direct light spots that may appear within the shooting range of the camera 4; in addition, in this embodiment, the light source 2 can be composed of two back-to-back pasted chip LEDs to achieve the effect of a point light source, thereby increasing the illumination brightness and improving the light utilization rate, thereby improving the fill light effect. This design is simple, practical, and easy to implement, and does not require complex optical design.

[0039] In some embodiments, in order to focus and evenly reflect the light, the mirror surface of the reflector 5 is designed to be a parabolic shape, the polygonal reflector 3 is a high-reflectivity cone with a polygonal structure, and the geometric center of the polygonal reflector 3 coincides with the focus of the reflector 5. With this structural design, after the light source 2 emits a spherically distributed light, the polygonal reflector 3 can reflect a large amount of light emitted from the light source 2 to the reflector 5, which is then reflected a second time by the parabolic reflector 5 and evenly output, thereby improving the reflection efficiency, achieving the purpose of surface light source conversion, and improving the fill light performance. At the same time, the surface of the object to be filled in can obtain more uniform fill light illumination, and also avoids the light spot problem that may be caused by direct light source.

[0040] In some embodiments, Figure 4As shown, in order to integrate power supply and signal transmission, a PCB board 7 for power supply and signal transmission is also included. The PCB board 7 is fixedly connected to the lampshade 1 and is located at the geometric center of the reflector 5. The support column 6 passes through the PCB board 7 and is connected to the lampshade 1; in this embodiment, the PCB board 7 realizes the functions of power supply, control and signal processing. The PCB board 7 is located at the center point of the reflector 5, which not only does not affect the transmission and reflection of light, but also ensures that the transmission path of the light remains intact and will not be hindered. The characteristic that the PCB board 7 cannot reflect light also avoids the phenomenon of a reflected light spot that may appear in the shooting range of the camera 4 due to the reflected light passing through the center of the parabola of the reflector 5.

[0041] In some embodiments, Figure 4 As shown, in order to simplify the structural design, the support column 6 is a hollow structure, and the PCB board 7 has wires connected to the light source 2 and the camera 4, wherein the wires can be passed through the support column 6 to supply power to the light source 2 and the camera 4. The hollow design can hide the wires in subsequent applications (not shown), effectively reducing the volume of the entire product, while also avoiding the possibility of exposed wires interfering with the light reflection path, and the appearance is more beautiful and simple.

[0042] In some embodiments, Figure 2 and Figure 3 As shown, by setting a connecting sleeve 8 on the back of the camera 4 and then putting the polygonal reflector 3 on the connecting sleeve 8, a stable assembly is achieved, while ensuring that the relative position between the polygonal reflector 3 and the camera 4 does not change, which is very important for maintaining the stability of the optical path to ensure that the light is always transmitted correctly without offset or distortion.

[0043] In some embodiments, Figure 2 , Figure 3 and Figure 5 As shown, it also includes a protective plate 9 installed at the opening of the lampshade 1, wherein the protective plate 9 is made of a highly light-transmitting material. By installing the protective plate 9 at the opening of the lampshade 1, the interior of the lampshade 1 such as the reflector 5, the multi-prism reflector 3 and the light source 2 can be effectively protected, and can avoid being affected by the external environment and reduce potential safety risks. The protective plate 9 is made of a highly light-transmitting material. In this embodiment, the protective plate 9 is made of a transparent glass plate, which means that it allows most of the light to pass through and will not hinder the propagation of light. Therefore, it will not reduce the intensity or uniformity of the light, and the fill light effect is maintained.

[0044] In some embodiments, Figure 3 , Figure 5 and Figure 6As shown, the present application provides a mounting groove 901 matched with the outer diameter of the camera 4 in the center of the protective plate 9, and embeds the camera 4 on the protective plate 9 through the mounting groove 901. The protective plate 9 cooperates with the support column 6 to reduce the impact of external vibration or shaking on the camera 4.

[0045] It should also be noted that the present application installs card plug-ins 902 in the grooves on both sides of the installation groove 901, and installs side panels 401 on both sides of the camera 4. The side panels 401 are provided with openings 402 that are compatible with the card plug-in 902. The card plug-in 902 is designed to be elastic and larger than the size of the opening 402. When the camera 4 is embedded in the protective plate 9 through the installation groove 901, the side panels 401 can be driven to be correspondingly connected to the grooves on both sides of the installation groove 901. After the card plug-in 902 and the inner wall of the opening 402 are squeezed against each other, the card plug-in 902 is correspondingly inserted into the inside of the opening 402. The connecting surfaces of the two have a large friction force, so that when the camera 4 is installed, the two sides can be positioned to prevent misalignment during installation, and the stability of the connection can also be improved.

[0046] In some embodiments, Figure 1 and Figure 2 As shown, the present application is provided with a water meter body 101 and a bracket 102, wherein the water meter body 101 is located directly below the lampshade 1, for achieving fill light for the lampshade 1, etc., wherein the lampshade 1 and the water meter body 101 are connected together by the bracket 102, which can ensure the stability of the lampshade 1 during the overall application process.

[0047] The reflective shadowless light source for video direct-reading remote water meter fill lighting provided in this embodiment effectively converts the LED point light source into a uniform surface light source through the design of the multi-prism reflector 3 and the parabolic reflector 5, thereby solving the problems of light spots and shadows that are easily generated by existing fill lighting methods, providing a clear and appropriate fill lighting effect, significantly improving the image quality, and having a simple structure and easy implementation.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A shadowless lighting device for supplementary lighting of a remote water meter for direct reading by video, comprising a lampshade (1), a light source (2), a multi-prism reflector (3) and a camera (4). Features: The inner surface of the lampshade (1) is provided with a reflector (5) for reflecting light, and a support column (6) is provided inside the lampshade (1). The light source (2), the multi-prism reflector (3) and the camera (4) are sequentially mounted on the support column (6) along the opening direction of the lampshade (1). The light emitted by the light source (2) is distributed in a spherical shape and is reflected by the multi-prism reflector (3) and the reflector (5).

2. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording according to claim 1, Features: The axis of the support column (6) is arranged to be consistent with the opening direction of the lampshade (1).

3. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording according to claim 2, Features: The mirror surface of the reflector (5) is in a parabolic shape, the polygonal reflector (3) is a high-reflectivity cone with a polygonal structure, and the geometric center of the polygonal reflector (3) coincides with the focus of the reflector (5).

4. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording according to claim 3, Features: It also comprises a PCB board (7) for supplying power and transmitting signals, the PCB board (7) being fixedly connected to the lampshade (1) and located at the geometric center of the reflector (5), and the support column (6) passing through the PCB board (7) and being connected to the lampshade (1).

5. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording and remote transmission according to claim 4, Features: The support column (6) is a hollow structure, and the PCB board (7) has a wire connected to the light source (2) and the camera (4); the wire is passed through the support column (6) and is used to supply power to the light source (2) and the camera (4).

6. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording and remote transmission according to claim 5, Features: The back of the camera (4) is provided with a connecting sleeve (8), the polygonal reflector (3) is sleeved on an end of the connecting sleeve (8) opposite to the camera (4), and the supporting column (6) passes through the polygonal reflector (3) and the connecting sleeve (8) in sequence and is then installed on the back of the camera (4).

7. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording and remote transmission according to claim 1, Features: It also comprises a protection plate (9), the protection plate (9) being mounted at the opening of the lampshade (1), and the protection plate (9) being made of a highly light-transmitting material.

8. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording and remote transmission according to claim 7, Features: A mounting groove (901) adapted to the outer diameter of the camera (4) is provided at the centre of the protective plate (9), and the camera (4) is embedded in the protective plate (9) via the mounting groove (901).

9. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording according to claim 8, Features: Side panels (401) with openings (402) are installed on both sides of the camera (4), and card plug-ins (902) are provided on both sides of the installation slot (901), and the other end of the card plug-in (902) is inserted into the opening (402).

10. The shadowless lighting device for supplementary lighting of a water meter for direct reading by video recording and remote transmission according to claim 1, Features: A water meter body (101) is provided below the lampshade (1), and the water meter body (101) and the lampshade (1) are connected via a bracket (102).

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