All-sky imager based on DVS identification

Abstract

The utility model provides an all-sky imager based on DVS identification. The all-sky imager comprises a telecentric fisheye lens, an inter-lens shutter, a filter lens, a 50% light splitting lens, an RGB imaging assembly and a DVS imaging assembly. The telecentric fisheye lens is installed at the foremost end of the imager, the inter-lens shutter is installed behind the telecentric fisheye lens, the filter lens is installed behind the inter-lens shutter, the 50% light splitting lens is installed behind the filter lens and used for splitting light, one part of the light after light splitting enters the RGB imaging assembly, and the other part of the light after light splitting enters the DVS imaging assembly. The all-sky imager can solve the problem that the existing all-sky imager cannot meet the data requirement of finer scale.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the imaging instrument related technical field, specifically a kind of all-sky imager based on DVS identification. BACKGROUND

[0002] All-sky imager is based on computer vision and machine learning technology, through all-sky visible light and infrared dual-band data cloud height, cloud amount and cloud shape observation intelligent measuring instrument. With the development of technology and the change of business needs, the original all-sky imager sampling frequency 1 / 10 minute cannot meet the more fine scale data demand, increase acquisition frequency also cannot realize the tracking of cloud cluster movement trajectory.

[0003] DVS sensor (camera) has no frame rate concept, and the capture of moving object is completely caused by the current change of light intensity. There is change, and the output signal, and the frequency of output signal can be as high as ten thousand times per second. Therefore, any subtle object movement light intensity change can be recorded and output by DVS. Therefore, the combination of DVS camera and traditional optical camera can better identify the cloud motion vector information, so as to solve the problem that the existing all-sky imager cannot meet the more fine scale data demand. UTILITY MODEL CONTENT

[0004] In order to solve the shortage of the prior art, the utility model combines the prior art, and provides an all-sky imager based on DVS identification, which can solve the problem that the existing all-sky imager cannot meet the more fine scale data demand.

[0005] The technical scheme of the utility model is as follows:

[0006] An all-sky imager based on DVS identification, comprising: a telecentric fisheye lens, an inter-lens shutter, a filter, a 50% beam splitter, an RGB imaging assembly and a DVS imaging assembly.

[0007] The telecentric fisheye lens is installed at the front end of the imager, the inter-lens shutter is installed behind the telecentric fisheye lens, the filter is installed behind the inter-lens shutter, and the 50% beam splitter is installed behind the filter. The 50% beam splitter is used for splitting light, and the split light enters the RGB imaging assembly and the DVS imaging assembly.

[0008] Further, the optical axes of the telecentric fisheye lens, the inter-lens shutter, the filter and the RGB imaging assembly coincide with the central axis of the imager.

[0009] Further, the RGB imaging assembly is an RGB camera, and the DVS imaging assembly is a DVS motion camera.

[0010] Furthermore, the telecentric fisheye lens is connected to the housing of the imager via a lens mount and is secured with screws.

[0011] Furthermore, the in-lens shutter has blades that can be opened and closed.

[0012] Furthermore, the filter is removable and replaceable.

[0013] Furthermore, the RGB imaging component is installed behind the 50% beam splitter lens, and the DVS imaging component is installed on one side of the 50% beam splitter lens.

[0014] Furthermore, the imager also includes an acquisition and processing unit, and the RGB imaging component and DVS imaging component are both connected to the acquisition and processing unit via electrical signals.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this utility model, through the cooperation of optical elements and imaging components, the RGB imaging component can acquire visible light red, green and blue three-band images of the entire sky, and record information such as the shape, color and distribution of clouds in the sky by taking timed shots. The DVS imaging component can acquire motion information of objects in the sky, such as the moving speed and direction of cloud layers, as well as dynamic change data such as airflow movement within clouds. This enables the imager to collect data at a more refined scale, improve the recognition rate of data across the entire sky, and provide real-time and richer data for accurate prediction.

[0017] 2. The imaging device provided by this utility model has a simple and reasonable overall structure design and adopts a coaxial lens beam splitting design concept, which makes the light propagation more stable. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the overall structure of the imaging device of this utility model.

[0019] Appendix Figure 2 This is a circuit block diagram of the imaging device of this utility model.

[0020] The following are the labels in the attached diagram: 1. Telecentric fisheye lens; 2. Leaf shutter; 3. Filter; 4. 50% beam splitter lens; 5. RGB camera; 6. DVS action camera. Detailed Implementation

[0021] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0022] This embodiment provides an all-sky imager based on DVS recognition. Its specific structure is shown in the following reference. Figure 1 as well as Figure 2 As shown.

[0023] The all-sky imager in this embodiment mainly includes the following structure.

[0024] The telecentric fisheye lens 1 is mounted at the very front of the all-sky imager, serving as the first optical element to receive light. Its wide field of view allows it to cover as much of the sky as possible at once, creating a broad "window" for the entire imaging system, maximizing the amount of light entering the instrument. Its mounting position ensures that the optical axis is perfectly aligned with the central axis of the imager, guaranteeing accurate centering and minimal distortion in the acquired image. The telecentric fisheye lens 1 is secured using a high-precision lens mount, which is tightly connected to the imager's housing and fastened with screws to prevent lens displacement during use.

[0025] The leaf shutter 2 is located at the rear of the telecentric fisheye lens 1, in the middle of the lens's optical system. It is positioned after light has passed through a portion of the lens elements of the telecentric fisheye lens 1, but before it has completely passed through the entire lens and reached the image plane. The advantage of this position is that it allows for precise control of the amount of light passing through the lens, and it prevents external temperature from interfering with image formation during shutter operation. From the perspective of light propagation path, the light first passes through the front lens group of the telecentric fisheye lens, then reaches the leaf shutter, which controls the continued rearward propagation of the light through the opening and closing of its blades.

[0026] Filter 3 is positioned behind the in-lens shutter 2, indicating the position of the light after it has passed through the shutter 2. It works closely with the lens's optical system to ensure that the filtered light is accurately projected onto the image plane. Filter 3 is mounted on an adjustable device, allowing for easy replacement with different types of filters to meet varying observation needs. Specifically, the mounting bracket for filter 3 can be detachable for easy replacement.

[0027] The 50% beam splitter 4, also known as the 50:50 beam splitter, is mounted behind the filter 3. Light is first collected and initially converged by the telecentric fisheye lens 1, then passes through the filter 3 and enters the 50% beam splitter 4. This lens is connected and fixed to the imager's optical path system via a lens barrel bracket, ensuring its stable position and high alignment with the optical path axis to guarantee the accuracy and stability of beam splitting. After beam splitting, part of the light continues along the original optical path to be imaged on the RGB camera 5, while the other part is guided to the DVS optical path to be imaged on the DVS action camera 6.

[0028] The RGB camera 5 primarily acquires visible light images in the red, green, and blue bands of the entire sky, recording information such as the shape, color, and distribution of clouds in the sky through timed shooting.

[0029] The DVS Action Camera 6 primarily acquires motion information of objects in the sky, such as the speed and direction of cloud movement, and dynamic changes in airflow within clouds. It detects changes in light intensity; when light intensity changes, the DVS records the corresponding event, including the time and location of the event, thereby enabling the tracking and monitoring of moving objects and recording key data on atmospheric motion and change.

[0030] In this embodiment, the RGB camera 5 and the DVS action camera 6 serve as acquisition units to transmit the acquired data to the acquisition processing unit. The acquisition processing unit completes the acquisition of digital signals from the acquisition units, processes the acquired data and status information, stores the processed data, and realizes on-site wireless or wired networking and data transmission according to the specified communication protocol.

Claims

1. An all-sky imager based on DVS recognition, characterized in that, include: Telecentric fisheye lens, in-lens shutter, filter, 50% beam splitter lens, RGB imaging module and DVS imaging module; The telecentric fisheye lens is installed at the front of the imager, the in-lens shutter is installed behind the telecentric fisheye lens, the filter is installed behind the in-lens shutter, and the 50% beam splitter is installed behind the filter. The 50% beam splitter is used to split the light, and part of the split light enters the RGB imaging component, while the other part enters the DVS imaging component.

2. The all-sky imager based on DVS recognition according to claim 1, characterized in that, The optical axes of the telecentric fisheye lens, in-lens shutter, filter, and RGB imaging assembly all coincide with the central axis of the imager.

3. The all-sky imager based on DVS recognition according to claim 1, characterized in that, The RGB imaging component is an RGB camera, and the DVS imaging component is a DVS action camera.

4. The all-sky imager based on DVS recognition according to claim 1, characterized in that, The telecentric fisheye lens is connected to the housing of the imager via a lens mount and is secured with screws.

5. The all-sky imager based on DVS recognition according to claim 1, characterized in that, The in-lens shutter has blades that can be opened and closed.

6. The all-sky imager based on DVS recognition according to claim 1, characterized in that, The filter is removable and replaceable.

7. The all-sky imager based on DVS recognition according to claim 1, characterized in that, The RGB imaging component is mounted behind the 50% beam splitter lens, and the DVS imaging component is mounted on one side of the 50% beam splitter lens.

8. The all-sky imager based on DVS recognition according to any one of claims 1-7, characterized in that, The imager also includes an acquisition and processing unit, and the RGB imaging component and DVS imaging component are both connected to the acquisition and processing unit via electrical signals.

Images