Automatic light intensity adjusting device

Abstract

The utility model relates to an automatic light intensity adjusting device, and belongs to the technical field of agricultural equipment. A slot for inserting an agricultural industrial camera is formed in a device box of the automatic light intensity adjusting device, a protective window plate is arranged right opposite to a lens of the industrial camera, a light sensor is electrically connected with a controller so as to obtain a light intensity signal through the light sensor, the controller is electrically connected with a driving part, and the driving part is connected with a rubber wheel. The rotation angle of the rubber wheel is controlled through the driving part according to the light intensity signal; the rubber wheel is configured to be capable of driving the dimming adjusting ring on the outer circle of the dimming mirror to rotate synchronously, and the dimming mirror is configured to adjust the intensity of light permitted to penetrate when the dimming adjusting ring rotates. According to the utility model, through the automatic light intensity adjusting device, the light intensity allowed to penetrate through the light reducing mirror can be adjusted as required, so that the camera can obtain better imaging light in high-light environment operation, the imaging effect is improved, the subsequent operation is facilitated, and the agricultural operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an automatic light intensity adjustment device, belonging to the field of agricultural equipment technology. Background Technology

[0002] In the application of intelligent agricultural machinery, industrial cameras are typically used as the core component of machine vision systems. However, high-light environments make it difficult for industrial cameras to see or even detect the surface features of objects, posing a challenge to target detection and automated production. Furthermore, to a certain extent, the acquired low-quality images can complicate subsequent processing, even leading to erroneous processing results from the intelligent agricultural machinery. In more serious cases, it can cause the machine to malfunction, reducing its effective operating time.

[0003] However, typical industrial cameras usually process the raw data received from the image sensor in an image signal processor (ESP) to create the final image. The ESP can only correct a limited range of lighting information. In excessively bright or strong light conditions, the RGB channels of the camera's sensor may become saturated, exceeding the device's saturation limit. This results in a completely white image that cannot be restored through post-processing. Consequently, this prevents agricultural machinery from continuing its operations, reducing agricultural efficiency. Utility Model Content

[0004] To overcome the problems existing in the background technology, this utility model creates an automatic light intensity adjustment device. In strong light environments, this device adjusts the light reduction amount through the light reduction adjustment ring of the neutral density filter, allowing suitable light to enter the industrial camera lens and thus achieving better imaging. Simultaneously, the industrial camera lens is directly inserted into the camera slot within the device box, without modifying the internal structure of the industrial camera or affecting its original imaging structure. This solves the problem of poor camera image quality caused by strong light and effectively improves image quality in strong light environments. The structure is simple and easy to use.

[0005] To achieve the above objectives, this utility model provides an automatic light intensity adjustment device.

[0006] The automatic light intensity adjustment device provided by this utility model includes a device box, a protective window plate, a neutral density filter, rubber wheels, a drive component, a light sensor, a mounting plate, and a controller;

[0007] The device box has a slot for inserting an industrial camera used in agriculture, and the protective window is positioned facing the lens of the industrial camera.

[0008] The rubber wheel and the neutral density filter are coplanar and are both located between the protective window plate and the lens slot of the industrial camera. Light passes through the protective window plate and then through the neutral density filter into the lens. The light sensor is located on the side of the neutral density filter away from the protective window plate and is located on the light transmission path.

[0009] The light sensor is electrically connected to the controller to acquire light intensity signals. The controller is electrically connected to the drive unit, and the drive unit is connected to the rubber wheel to control the rotation angle of the rubber wheel according to the light intensity signals.

[0010] The rubber wheel is configured to drive the light-reducing adjustment ring of the outer ring of the neutral density mirror to rotate synchronously, and the neutral density mirror is configured to adjust the intensity of light that can be transmitted when the light-reducing adjustment ring rotates.

[0011] Preferably, the neutral density filter is configured to have a plurality of sequentially distributed rotational positions, and when switching adjacent rotational positions along a first direction, the light intensity allowed to be transmitted by the neutral density filter decreases by half, and when switching adjacent rotational positions along a second direction, the light intensity allowed to be transmitted by the neutral density filter increases by half, wherein the second direction is opposite to the first direction.

[0012] Preferably, the rubber wheel is configured to be viscoelastic to abut against the dimming adjustment ring, and the dimming adjustment ring is driven to rotate synchronously by friction when the rubber wheel rotates.

[0013] Preferably, the device further includes a mounting plate disposed inside the device box. The mounting plate has a light-transmitting hole, the neutral density filter covers the light-transmitting hole, and the light sensor is disposed on the side of the mounting plate away from the neutral density filter.

[0014] Preferably, the number of light sensors is four, and the four light sensors are arranged at circumferential intervals along the light-transmitting hole, and the four light sensors are all distributed within the contour range of the neutral density mirror.

[0015] Preferably, the neutral density filter is detachably connected to the mounting plate.

[0016] Preferably, the protective viewing window is detachably connected to the device box.

[0017] Preferably, the protective window panel is a transparent glass panel.

[0018] Preferably, the neutral density filter is coaxially arranged with the industrial camera lens.

[0019] In the above technical solution, the automatic light intensity adjustment device provided by this utility model has the following beneficial effects: This utility model, by creating an automatic light intensity adjustment device, adjusts the light reduction amount through the light reduction adjustment ring of the neutral density filter in strong light environments, achieving adaptive automatic adjustment of light entering the camera. This ensures that suitable light enters the industrial camera lens, thereby achieving better imaging and avoiding the situation where excessively strong light enters the industrial camera, resulting in poor image quality in high-light environments. This effectively improves image quality in strong light environments. Furthermore, the industrial camera lens is directly inserted into the camera slot inside the device box without modifying the internal structure of the industrial camera or affecting its original imaging structure, achieving plug-and-play functionality for the industrial camera. The structure is simple and easy to use. Attached Figure Description

[0020] Figure 1 This is a right view of an automatic light intensity adjustment device according to an embodiment of the present invention;

[0021] Figure 2 This is a front view of an embodiment of the automatic light intensity adjustment device of this utility model;

[0022] Figure 3 This is a front view of the neutral density filter and related components fixed on the mounting plate according to an embodiment of the present invention;

[0023] Figure 4 This is a side view of the neutral density filter and related components fixed on the mounting plate according to an embodiment of the present invention;

[0024] Figure 5 This is a control flowchart of an embodiment of the present invention;

[0025] Figure 6 This is a right view of an inserted industrial camera according to an embodiment of the present invention.

[0026] The following components are labeled in the diagram: 1. Rubber wheel; 2. Mounting plate; 3. Neutral density filter; 4. Light sensor; 5. Drive unit; 6. Protective window frame; 7. First fastener; 8. Washer; 9. Second fastener; 10. Device box; 11. Wing nut; 12. Base; 13. Hex head bolt; 14. Protective window plate; 15. Controller. Detailed Implementation

[0027] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0028] In some embodiments, such as Figure 1 , 2As shown, the automatic light intensity adjustment device includes a rubber wheel 1, a mounting plate 2, a neutral density filter 3, a light sensor 4, a drive unit 5, a protective window frame 6, a first fastener 7, a washer 8, a second fastener 9, a device box 10, a wing nut 11, a base 12, a hexagonal head bolt 13, a protective window plate 14, and a controller 15. The controller 15 is connected and fixed inside the device box 10. A neutral density filter 3 is located in front of the device box 10, and a rubber wheel 1 is located on the upper left side of the neutral density filter 3. The rubber wheel 1 is driven by the drive unit 5, which can be a stepper motor. Four light sensors 4 are located between the neutral density filter 3 and the mounting plate 2. The mounting plate 2 is fixed inside the device box 10 by four second fasteners 9. The base 12 is fixed to the bottom of the device box 10 by the wing nut 11 and the hexagonal head bolt 13. The washer 8 and the protective window plate 14 are sequentially embedded in the protective window frame 6 and fixed to the front end of the device box 10 by four first fasteners 7.

[0029] In some embodiments, such as Figure 3 As shown, the rubber wheel 1 is positioned at 45° above the left of the neutral density mirror 3. The rubber wheel 1 is sleeved with the drive component 5 and clamped to the light reduction adjustment ring on the outer side of the light reduction mirror 3. The light sensors 4 between the neutral density mirror 3 and the mounting plate 2 are evenly distributed at 90°. The stepper motor is relatively small and fixed on the mounting plate 2. The stepper motor has angle control rotation and high-precision angle control capability.

[0030] The working process of this utility model is as follows: The light sensor 4 detects the intensity of light passing through the neutral density filter 3 and transmits the signal to the controller 15. The controller 15 then controls the drive component 5 to rotate coaxially with the rubber wheel 1. The strong friction between the rubber wheel 1 and the knurled surface of the neutral density filter 3 causes the adjustment ring of the neutral density filter 3 to rotate by the same angle, thus automatically adjusting the different levels of the neutral density filter 3. The control flow of this utility model is as follows: Figure 5 As shown.

[0031] This utility model's automatic light intensity adjustment device, after being inserted into a camera, is like... Figure 6 As shown, this automatic light intensity adjustment device automatically adjusts the amount of light entering the camera, reducing poor image quality in high-light environments. This allows intelligent agricultural machines to operate normally even in high-light conditions, extending their operating time. Compared to ordinary neutral density (ND) filters that require manual mounting on the camera lens and frequent manual adjustments based on image quality, this automatic light intensity adjustment device is plug-and-play for industrial cameras, offering automatic adjustment, a simple structure, and ease of use.

[0032] The above description is merely illustrative and not intended to limit the scope of the present invention. Undoubtedly, those skilled in the art can modify the details of the described examples in various ways without departing from the scope defined by the claims of the present invention.

Claims

1. An automatic light intensity adjustment device, characterized in that, Includes a device box, protective viewing window, neutral density filter, rubber wheels, drive components, light sensor, mounting plate, and controller; The device box has a slot for inserting an industrial camera used in agriculture, and the protective window is positioned facing the lens of the industrial camera. The rubber wheel and the neutral density filter are coplanar and both are located between the protective window plate and the slot. Light passes through the protective window plate and then through the neutral density filter into the lens. The light sensor is located on the side of the neutral density filter away from the protective window plate and is located on the light transmission path. The light sensor is electrically connected to the controller to acquire light intensity signals. The controller is electrically connected to the drive unit, and the drive unit is connected to the rubber wheel to control the rotation angle of the rubber wheel according to the light intensity signals. The rubber wheel is configured to drive the light-reducing adjustment ring of the outer ring of the neutral density mirror to rotate synchronously, and the neutral density mirror is configured to adjust the intensity of light that can be transmitted when the light-reducing adjustment ring rotates.

2. The automatic light intensity adjustment device according to claim 1, characterized in that, The neutral density filter is configured to have a plurality of sequentially distributed rotational positions. When switching adjacent rotational positions along a first direction, the light intensity allowed to be transmitted by the neutral density filter decreases by half. When switching adjacent rotational positions along a second direction, the light intensity allowed to be transmitted by the neutral density filter increases by half. The second direction is opposite to the first direction.

3. The automatic light intensity adjustment device according to claim 1, characterized in that, The rubber wheel is configured to be viscoelastic to abut against the dimming adjustment ring, and the dimming adjustment ring rotates synchronously through friction when the rubber wheel rotates.

4. The automatic light intensity adjustment device according to claim 1, characterized in that, It also includes a mounting plate, which is located inside the device box. The mounting plate has a light-transmitting hole, the light-reducing mirror covers the light-transmitting hole, and the light sensor is located on the side of the mounting plate away from the light-reducing mirror.

5. The automatic light intensity adjustment device according to claim 4, characterized in that, The number of light sensors is four, and the four light sensors are arranged at circumferential intervals along the light-transmitting hole, and the four light sensors are all distributed within the contour range of the neutral density mirror.

6. The automatic light intensity adjustment device according to claim 4, characterized in that, The neutral density filter is detachably connected to the mounting plate.

7. The automatic light intensity adjustment device according to claim 1, characterized in that, The protective viewing window is detachably connected to the device box.

8. The automatic light intensity adjustment device according to claim 1, characterized in that, The protective viewing window is a transparent glass panel.

9. The automatic light intensity adjustment device according to claim 1, characterized in that, The neutral density filter is coaxially mounted with the industrial camera lens.

Images