Solar azimuth measuring device based on image recognition

Abstract

The utility model relates to the technical field of monitoring, in particular to a sun azimuth measuring device based on image recognition, which comprises a sundial, the sundial comprises a sundial surface and a sundial needle, the edge of the sundial surface is provided with a support rod, the support rod is provided with a recognition component, the recognition component comprises a camera, the sundial surface is arranged on a base, and the camera is arranged on the base. The base is provided with a power supply and a signal transmitter, and the camera is connected with the power supply and the signal transmitter. According to the sun azimuth measuring device based on image recognition, the sun azimuth information is acquired through the sundial, the sundial surface picture containing the shadow of the sundial needle is acquired through the camera, and the picture is sent to the cloud platform through the signal transmitter, so that the sun azimuth information is acquired. The device is simple in structure, convenient to use and good in effect.

Description

Technical Field

[0001] This utility model relates to the field of monitoring technology, and in particular to a solar azimuth measurement device based on image recognition. Background Technology

[0002] Accurate measurement of the sun's azimuth angle helps in the rational planning of building orientation and layout, enabling buildings to make full use of solar energy in different seasons and reduce solar radiation heat in summer, thereby reducing air conditioning energy consumption. For example, in the Northern Hemisphere, placing the main rooms of a building on the south side allows for more sunlight in winter, raising indoor temperatures; in summer, shading facilities reduce direct sunlight, lowering indoor temperatures and thus reducing the frequency and duration of air conditioning use, achieving energy conservation.

[0003] In terms of bridge structures, because they are exposed to the natural environment, solar radiation causes changes in structural temperature, resulting in thermal stress. By measuring the solar azimuth and radiation intensity, the trend of structural temperature changes can be predicted. During the design and construction process, reasonable measures such as installing expansion joints and selecting appropriate materials and structural forms can be taken to reduce the impact of thermal stress on the bridge structure and avoid problems such as cracks and deformation.

[0004] Therefore, the impact of subsequent sunlight on the building structure needs to be considered during the design phase, and a more convenient and effective measuring device for monitoring the direction of solar incidence is required. Utility Model Content

[0005] The purpose of this invention is to address the problem that existing technologies require a more convenient and effective measuring device for monitoring the direction of solar incidence, as the design of building structures needs to consider the impact of subsequent sunlight on the building structure. This invention provides a solar orientation measuring device based on image recognition.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A solar azimuth measurement device based on image recognition includes a sundial, the sundial includes a dial face and a dial needle, the edge of the dial face is provided with a support rod, the support rod is provided with a recognition component, the recognition component includes a camera, the dial face is disposed on a base, the base is provided with a power supply and a signal transmitter, and the camera is connected to the power supply and the signal transmitter.

[0008] The solar azimuth measurement device based on image recognition described in this utility model obtains solar azimuth information through the sundial, acquires a photograph of the dial surface including the shadow of the gnomon through the camera, and sends the photograph to the cloud platform through the signal transmitter, thereby obtaining solar azimuth information. The device has a simple structure, is easy to use, and has good performance.

[0009] As a preferred embodiment of this invention, the identification component further includes a photosensitive sensor and / or a temperature sensor, wherein the photosensitive sensor and / or the temperature sensor are connected to the power supply.

[0010] With this structural configuration, the power supply is controlled to switch on and off by the photosensitive sensor and / or the temperature sensor; when the photosensitive sensor and / or the temperature sensor detects low light intensity and / or low temperature, the measurement of the identification component and the data transmission of the signal transmitter are stopped; when the photosensitive sensor and / or the temperature sensor detects high light intensity and / or high temperature, the measurement of the identification component and the data transmission of the signal transmitter are started.

[0011] As a preferred technical solution of this utility model, the dial surface is a white plate to facilitate the projection of the shadow of the gnomon.

[0012] As a preferred technical solution of this utility model, the shape of the sundial surface is circular or rectangular.

[0013] As a preferred technical solution of this utility model, the gnomon is a dark-colored column, which has good light absorption properties and is conducive to forming a shadow on the gnomon surface.

[0014] The color of the dark-colored column can be black, dark blue, dark green, dark purple, dark brown, etc.

[0015] As a preferred technical solution of this utility model, the support rod is a hollow tube, and the power supply line and data transmission line of the identification component are arranged inside the support rod tube; that is, the support rod serves as both a support frame for the identification component and a routing channel for the power supply line and data transmission line of the identification component.

[0016] When the sun moves to the same plane as the support rod and the gnomon, the shadow of the support rod coincides with the shadow of the gnomon, which will create a measurement blind zone. This problem needs to be solved.

[0017] As a preferred technical solution of this utility model, the edge of the sundial surface is provided with a bracket, the camera is provided on the bracket, and the bracket, the sundial needle and the support rod are not coplanar.

[0018] By adopting this structural arrangement, two support rods and two cameras are set on the sundial surface to perform complementary measurements, thereby solving the problem of measurement blind spots that exist with a single support rod and camera.

[0019] The problem of measurement blind spots between a single support rod and a single camera can also be solved by interpolation. Specifically, this is done by interpolating the solar azimuth angle values ​​obtained before and after the moment when the shadow of the support rod and the gnomon coincides.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] The solar azimuth measurement device based on image recognition described in this utility model obtains solar azimuth information through a sundial, acquires a photograph of the dial surface including the shadow of the gnomon through a camera, and sends the photograph to a cloud platform through a signal transmitter, thereby obtaining solar azimuth information. The device has a simple structure, is easy to use, and has good performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a solar azimuth measurement device based on image recognition.

[0023] Figure 2 This is an exploded view of the structure of an image recognition-based solar azimuth measurement device.

[0024] Markings in the diagram: 1-Dial face, 2-Dial needle, 3-Support rod, 4-Identification component, 5-Base. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0026] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0028] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0029] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0030] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0031] In related technologies, the impact of subsequent sunlight on the building structure needs to be considered during the design phase, requiring a more convenient and effective measuring device for monitoring the direction of solar incidence. Therefore, the technical solution of this application was developed, which is described below in conjunction with... Figures 1 to 2 To elaborate.

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, the solar azimuth measuring device based on image recognition of this utility model includes a sundial, a support rod 3, a recognition component 4, and a base 5.

[0034] The sundial includes a dial face 1 and a gnomon 2. In some optional embodiments, the dial face 1 is a white plate to facilitate the projection of the shadow of the gnomon 2. The shape of the dial face 1 can be circular or rectangular. The gnomon 2 is a dark-colored column with good light absorption, which is beneficial for forming a shadow on the dial face 1. The color of the dark-colored column can be black, dark blue, dark green, dark purple, dark brown, etc. Assuming that the height of the gnomon 2 is h and the radius or minimum side length of the dial face 1 is B, then the minimum measured solar azimuth tilt angle is arctan(h / B).

[0035] The support rod 3 is provided on the edge of the sundial 1. The support rod 3 is provided with an identification component 4. The identification component 4 includes a camera and also includes a photosensitive sensor and / or a temperature sensor.

[0036] The sundial 1 is mounted on the base 5, which is equipped with a power supply and a signal transmitter. The camera is connected to the power supply and the signal transmitter, and the photosensitive sensor and / or the temperature sensor is connected to the power supply. With this structure, the power supply is controlled to operate by the photosensitive sensor and / or the temperature sensor. When the photosensitive sensor and / or the temperature sensor detects low light intensity and / or low temperature, the measurement by the identification component 4 and the data transmission with the signal transmitter are stopped. When the photosensitive sensor and / or the temperature sensor detects high light intensity and / or high temperature, the measurement by the identification component 4 and the data transmission with the signal transmitter begin.

[0037] In some optional embodiments, the support rod 3 is a hollow tube, and the power supply line and data transmission line of the identification component 4 are arranged inside the tube of the support rod 3; that is, the support rod 3 serves as both a support frame for the identification component 4 and a routing channel for the power supply line and data transmission line of the identification component 4.

[0038] When the sun moves to the same plane as the support rod 3 and the gnomon 2, the shadow of the support rod 3 coincides with the shadow of the gnomon 2, which will create a measurement blind zone. This problem needs to be solved.

[0039] In one solution, a bracket is provided at the edge of the dial surface 1, and the camera is mounted on the bracket. The bracket, the gnomon 2, and the support rod 3 are not coplanar. With this structural arrangement, by setting the bracket and the camera, two support rods 3 and two cameras are formed on the dial surface 1 to perform complementary measurements, thereby solving the problem of measurement blind spots caused by a single support rod 3 and camera.

[0040] Another solution addresses the measurement blind spot issue between the single support rod 3 and the camera by interpolation. Specifically, this involves interpolating the solar azimuth angle values ​​obtained before and after the moment when the shadows of the support rod 3 and the gnomon 2 overlap.

[0041] The solar azimuth measurement device based on image recognition described in this embodiment obtains solar azimuth information through the sundial, acquires a photo of the dial surface 1 containing the shadow of the gnomon 2 through the camera, and sends the photo to the cloud platform through the signal transmitter to obtain solar azimuth information. The device has a simple structure, is easy to use, and has good performance.

[0042] Example 2

[0043] An algorithm for a solar azimuth measurement device based on image recognition, as described in Example 1, includes the following steps:

[0044] S1. Convert the received photo to grayscale;

[0045] S2. Perform binarization on the photo;

[0046] S3. By accumulating the results, distinguish the foreground and background, and identify the gnomon 2 and its shadow;

[0047] S4. Differentiate shadows;

[0048] S5. Skeletonize the gnomon 2 and the shadow image;

[0049] S6. Calculate the fitted straight line of the skeletal spine;

[0050] S7. Solve for the shadow length and plane angle;

[0051] S8. Solve for the sun's elevation angle;

[0052] S9. Display the results.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solar azimuth measurement device based on image recognition, comprising a sundial, said sundial including a dial face (1) and a dial needle (2), characterized in that, The dial (1) is provided with a support rod (3) on its edge. The support rod (3) is provided with an identification component (4). The identification component (4) includes a camera. The dial (1) is located on a base (5). The base (5) is provided with a power supply and a signal transmitter. The camera is connected to the power supply and the signal transmitter.

2. The solar azimuth measurement device based on image recognition according to claim 1, characterized in that, The identification component (4) further includes a photosensitive sensor and / or a temperature sensor, wherein the photosensitive sensor and / or the temperature sensor is connected to the power supply.

3. The solar azimuth measurement device based on image recognition according to claim 1, characterized in that, The sundial surface (1) is a white plate.

4. The solar azimuth measurement device based on image recognition according to claim 1, characterized in that, The shape of the sundial (1) is circular or rectangular.

5. The solar azimuth measurement device based on image recognition according to claim 1, characterized in that, The gnomon (2) is a dark-colored column.

6. The solar azimuth measurement device based on image recognition according to claim 1, characterized in that, The support rod (3) is a hollow tube, and the power supply line and data transmission line of the identification component (4) are arranged inside the tube of the support rod (3).

7. The solar azimuth measurement device based on image recognition according to any one of claims 1-6, characterized in that, The edge of the sundial (1) is provided with a bracket, and the camera is provided on the bracket. The bracket, the sundial needle (2) and the support rod (3) are not coplanar.

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