Image acquisition unit based on AI image flow measurement algorithm detection system

Abstract

The utility model discloses an image acquisition unit based on an AI image flow measurement algorithm detection system, which comprises a camera, the front end of the camera is connected with a composite filter wheel through a flange plate, the front end of the composite filter wheel is sequentially connected with a polarization lens and a telescopic light shield, the outer wall of the telescopic light shield is provided with a light supplement array, and the light supplement array is connected with the composite filter wheel through a flange plate. An illuminance sensor is embedded in the inner wall of the telescopic light shield, and a control box is further installed on a shell of the composite filter wheel. Through the collaborative design of the telescopic light shield, the polarization lens, the composite filter wheel and the light supplement array, the problems of strong light overexposure, specular reflection, low illumination noise and the like are effectively solved, adaptive adjustment can be carried out by combining the illumination sensor to sense ambient light, the image quality under the complex illumination condition is remarkably improved, and the image quality is improved. And a reliable data source is provided for an AI flow measurement algorithm.

Description

Technical Field

[0001] This utility model relates to the field of hydrological monitoring technology, and in particular to an image acquisition unit for an AI image flow measurement algorithm detection system. Background Technology

[0002] The AI-based image flow measurement system is an intelligent system that uses computer vision and deep learning technologies to measure water flow velocity, direction, and flow pattern in real time by analyzing water surface images or videos. It mainly consists of four core parts: hardware layer, data acquisition layer, algorithm processing layer, and decision output layer. It is commonly used for river flow velocity monitoring. By deploying cameras that acquire images on bridges, AI algorithms can calculate the flow velocity in real time, which can assist in flood control scheduling.

[0003] However, existing image acquisition equipment is susceptible to significant interference under complex operating conditions, such as strong light causing image overexposure, water / mirror reflections creating light spot noise, and insufficient illumination in cloudy or rainy weather, which affects the quality of the acquired images and consequently the accuracy of subsequent flow measurement calculations.

[0004] To address these issues, we propose an image acquisition unit based on an AI image flow measurement algorithm detection system. Utility Model Content

[0005] The purpose of this invention is to provide an image acquisition unit based on an AI image flow measurement algorithm detection system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An image acquisition unit based on an AI image flow measurement algorithm detection system includes a camera. The front end of the camera is connected to a composite filter wheel via a flange. A polarizing lens and a telescopic light shield are sequentially connected to the front end of the composite filter wheel. A supplementary light array is installed on the outer wall of the telescopic light shield, and an illuminance sensor is embedded on the inner wall of the telescopic light shield. A control box is also installed on the outer shell of the composite filter wheel.

[0008] In a further embodiment, the front and rear surfaces of the composite filter wheel are perforated with light-transmitting holes, the axis of which coincides with the axis of the camera. A composite filter disc is rotatably mounted inside the composite filter wheel, and the composite filter disc has six mounting positions along its circumference, five of which are used to mount ND filters. A miniature rotary motor is also connected to the rotating shaft of the composite filter disc.

[0009] In a further embodiment, a polarizing lens is installed inside the housing of the polarizing lens, and a turntable is fixed around the polarizing lens and is rotatably connected to the housing of the polarizing lens. A piezoelectric motor for driving the turntable to rotate is also installed inside the housing of the polarizing lens.

[0010] In a further embodiment, the telescopic light shield consists of three interlocking light shield cylinders, and telescopic components are installed between adjacent light shield cylinders to control the extension and retraction of adjacent light shield cylinders.

[0011] In a further embodiment, the telescopic member includes a screw, the end of which is connected to a micro stepper motor, and a slider is screwed onto the external thread of the screw.

[0012] In a further embodiment, the supplementary lighting array consists of a mounting ring and LED beads evenly distributed along the circumference of the mounting ring, with the angle between adjacent LED beads being 2°.

[0013] In a further embodiment, the light-emitting surface of the LED bead forms a 15° angle with the optical axis of the camera lens.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention effectively solves problems such as overexposure in strong light, specular reflection, and noise in low light by using a synergistic design of a telescopic light shield, a polarizing lens, a composite filter wheel, and a supplementary light array. Combined with an illuminance sensor to sense ambient light, it can adaptively adjust the image quality under complex lighting conditions, significantly improving the image quality and providing a reliable data source for AI flow measurement algorithms. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the composite filter wheel structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the composite filter wheel of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the polarizing lens of this utility model;

[0020] Figure 5 This is a side view cross-sectional diagram of the telescopic sunshade of this utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the telescopic component of this utility model;

[0022] Figure 7 This is a block diagram of the intelligent control system of this utility model.

[0023] In the diagram: 1. Camera; 2. Flange; 3. Composite filter wheel; 31. Light-transmitting hole; 32. Composite filter disc; 33. ND filter; 34. Miniature rotary motor; 4. Polarizing lens; 41. Polarizing lens; 42. Turntable; 43. Piezoelectric motor; 5. Telescopic light shield; 51. Light shield tube; 52. Telescopic component; 521. Screw; 522. Miniature stepper motor; 523. Slider; 6. Fill light array; 61. Mounting ring; 62. LED beads; 7. Illuminance sensor; 8. Control box. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-3An image acquisition unit based on an AI image flow measurement algorithm detection system includes a camera 1. The front end of the camera 1 is connected to a composite filter wheel 3 via a flange 2. Specifically, the front and rear surfaces of the composite filter wheel 3 have light-transmitting holes 31, the axis of which coincides with the axis of the camera 1. A composite filter disc 32 is rotatably mounted inside the composite filter wheel 3, and the composite filter disc 32 has six mounting positions along its circumference. Five of these mounting positions are equipped with ND filters 33, each with a different filtering density. A micro rotary motor 34 is also connected to the rotating shaft of the composite filter disc 32. The micro rotary motor 34 is fixed to the inner wall of the housing of the composite filter wheel 3 and is used to drive the composite filter disc 32 to rotate. Every 60° rotation of the composite filter disc 32 switches an ND filter 33 to the light-transmitting hole 31. When the disc rotates to an empty position that coincides with the light-transmitting hole 31, it no longer has a filtering effect.

[0028] Please see Figure 4 The front end of the composite filter wheel 3 is connected to a polarizing lens 4. A polarizing lens 41 is installed inside the housing of the polarizing lens 4. A turntable 42 is fixed around the polarizing lens 41, and the turntable 42 is rotatably connected to the housing of the polarizing lens 4. A piezoelectric motor 43 that drives the turntable 42 to rotate is also installed inside the housing of the polarizing lens 4. The piezoelectric motor 43 drives the polarizing lens 41 to rotate by the deformation of the piezoelectric ceramic, thereby adjusting the appropriate polarization angle.

[0029] Please see Figure 5-6 The front end of the polarizing lens 4 is connected to a telescopic light shield 5. The telescopic light shield 5 consists of three layers of interlocking light shield cylinders 51, and telescopic components 52 are installed between adjacent light shield cylinders 51. Specifically, the telescopic components 52 are mainly installed on the inner walls of the middle layer and the outermost light shield cylinder 51. The telescopic components 52 include a screw 521. The two ends of the screw 521 are rotatably connected to the inner walls of the front and rear edges of the light shield cylinder 51. One end of the screw 521 is also connected to a micro stepper motor 522, thereby controlling the rotation of the screw 521. A slider 523 is screwed onto the external thread of the screw 521. The slider 523 is fixedly connected to the inner light shield cylinder 51, so that when the screw 521 rotates, the outer light shield cylinder 51 can move telescopically relative to the inner light shield cylinder 51.

[0030] Please see Figure 1 and Figure 5 A supplementary light array 6 is installed on the outer wall of the telescopic light shield 5. Specifically, the supplementary light array 6 consists of a mounting ring 61 and LED beads 62 evenly distributed around the mounting ring 61. The angle between adjacent LED beads 62 is 2°. Furthermore, the light-emitting surface of the LED beads 62 forms a 15° angle with the optical axis of the camera lens 1 to avoid direct reflection.

[0031] Please see Figure 7To achieve intelligent control and adjustment, an illuminance sensor 7 is embedded in the inner wall of the telescopic light shield 5 to collect light data in real time. A control box 8 is also installed on the outer shell of the composite filter wheel 3. The control box 8 has a built-in central controller. After receiving the illuminance detection data, the central controller can calculate the required ND density and the optimal polarization angle, and then drive the actuator to work, so that the ND filter wheel rotates to the target slot and the polarizing mirror rotates to the set angle. When overexposed, the telescopic light shield 5 is driven to extend, and when the ambient light intensity is weak, the telescopic light shield 5 is controlled to fully retract, and the supplementary light array 6 is activated to supplement light.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An image acquisition unit of an AI image flow measurement algorithm detection system, comprising a camera (1), characterized in that: The front end of the camera (1) is connected to a composite filter wheel (3) via a flange (2), and the front end of the composite filter wheel (3) is connected in sequence to a polarizing lens (4) and a telescopic light shield (5). A supplementary light array (6) is installed on the outer wall of the telescopic light shield (5), and an illuminance sensor (7) is embedded on the inner wall of the telescopic light shield (5). A control box (8) is also installed on the outer shell of the composite filter wheel (3).

2. The image acquisition unit of the AI ​​image flow measurement algorithm detection system according to claim 1, characterized in that: The front and rear surfaces of the composite filter wheel (3) are perforated with light-transmitting holes (31), the axis of which coincides with the axis of the camera (1). A composite filter disc (32) is rotatably installed inside the composite filter wheel (3), and six mounting positions are provided on the composite filter disc (32) along the circumference. ND filters (33) are installed in five of the mounting positions. A miniature rotary motor (34) is also connected to the rotating shaft of the composite filter disc (32).

3. The image acquisition unit of the AI-based image flow measurement algorithm detection system according to claim 1, characterized in that: The polarizing lens (4) has a polarizing lens (41) installed inside its housing. A turntable (42) is fixed around the polarizing lens (41), and the turntable (42) is rotatably connected to the housing of the polarizing lens (4). A piezoelectric motor (43) that drives the turntable (42) to rotate is also installed inside the housing of the polarizing lens (4).

4. The image acquisition unit of the AI ​​image flow measurement algorithm detection system according to claim 1, characterized in that: The telescopic light shield (5) consists of three layers of interlocking light shield cylinders (51), and telescopic components (52) are installed between adjacent light shield cylinders (51) to control the telescopic movement of adjacent light shield cylinders (51).

5. The image acquisition unit of the AI ​​image flow measurement algorithm detection system according to claim 4, characterized in that: The telescopic component (52) includes a screw (521), the end of which is connected to a micro stepper motor (522), and a slider (523) is screwed onto the external thread of the screw (521).

6. The image acquisition unit of the AI-based image flow measurement algorithm detection system according to claim 1, characterized in that: The supplementary lighting array (6) consists of a mounting ring (61) and LED beads (62) evenly distributed around the mounting ring (61), with the angle between adjacent LED beads (62) being 2°.

7. The image acquisition unit of the AI ​​image flow measurement algorithm detection system according to claim 6, characterized in that: The light-emitting surface of the LED bead (62) forms a 15° angle with the optical axis of the camera lens (1).

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