Tobacco transmittance detection equipment
By combining white light source and image processing algorithm, the automatic detection of tobacco leaf transmittance has been realized, which solves the problems of instability and inefficiency of manual detection and improves the accuracy and efficiency of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-03-10
AI Technical Summary
Current methods for detecting the transmittance of tobacco leaves rely on manual assessment, which is easily affected by personal experience and environmental factors, resulting in unstable test results and low efficiency.
An automated inspection device consisting of a white light source, a camera, and a light-emitting tobacco leaf platform, combined with image processing algorithms, enables accurate detection of the light transmittance of tobacco leaves.
This improved the accuracy and efficiency of tobacco leaf transmittance testing, reduced human error, and ensured the stability and consistency of test results.
Smart Images
Figure CN223986039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to tobacco testing equipment, specifically to a tobacco leaf transmittance testing device. Background Technology
[0002] Transmittance of tobacco leaves, as an important appearance characteristic for assessing their quality, typically relies on manual inspection, where workers evaluate it using light sources and intuition. However, this method is susceptible to influences from personal experience, subjective feelings, environmental conditions, and emotional fluctuations, leading to inconsistent accuracy and inefficiency. Incorrect transmittance assessments can result in deviations in product quality control. Therefore, establishing automated and precise inspection methods is urgently needed.
[0003] This utility model is proposed for this purpose. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model proposes a tobacco leaf transmittance detection device that uses white light as a light source.
[0005] The technical solution of this utility model is as follows:
[0006] A tobacco leaf transmittance detection device includes: a camera 1, a white light source 2, a light-emitting tobacco leaf stage 3, a control terminal 6, and a frame structure 7.
[0007] The structural frame 7 is cubic in shape, with a white shell on its periphery; a light-emitting tobacco leaf carrier 3 is arranged in the lower part of the cube, a camera 1 is arranged on the upper inner wall of the cube, and multiple white light sources 2 are arranged on the upper part of the side inner wall of the cube.
[0008] Preferably, the main body of the frame structure 7 consists of four metal rods, which are metal round tubes or metal square tubes; the outer perimeter consists of six white panels, and the frame structure 7 is a cube formed by the six white panels and the four metal rods, with a door on the front of the frame structure 7.
[0009] Preferably, the luminous tobacco leaf carrier 3 is arranged on the slider 51 via the carrier motor 4, and the two ends of the slider 51 are arranged on the movable slide rail 5; the movable slide rail 5 is fixedly arranged on the inner walls of both sides of the cube of the structural frame 7.
[0010] Preferably, there are four white light sources 2, which are respectively arranged on the upper part of the four inner walls of the cube of the structural frame 7.
[0011] Preferably, the camera 1 and the luminous tobacco leaf carrier 3 are on the same vertical line.
[0012] Preferably, the control terminal 6 is wirelessly connected to the camera 1, the white light source 2, the luminous tobacco leaf carrier 3, and the carrier motor 4.
[0013] The operation procedure of the tobacco leaf transmittance testing device of this utility model is as follows:
[0014] A piece of tobacco leaf to be tested is placed safely and without damage on the luminescent tobacco leaf stage 3. During placement, it is crucial to ensure the leaf is spread out as much as possible to fully expose its surface. This prevents wrinkles from reducing the penetration of white light into the leaf, which could lead to misjudgments of the leaf's light transmittance by the terminal algorithm. The flatness of the tobacco leaf surface is essential for obtaining accurate light transmittance information, as any wrinkles or uneven surfaces can cause deviations in the detection data. Therefore, careful attention must be paid when placing the leaf to ensure it lies flat on the luminescent tobacco leaf stage 3 of the device, facilitating comprehensive and uniform illumination by the white light source.
[0015] After confirming that the tobacco leaves are placed on the luminescent tobacco leaf carrier 3, the process is initiated by pressing a button on the control terminal 6. The terminal's program drives the carrier motor 4 to start, smoothly pushing the luminescent tobacco leaf carrier 3 into the frame structure 7. Then, the control terminal 6 precisely adjusts the illumination, alternating between the white light source 2 above and the luminescent tobacco leaf carrier 3, while simultaneously activating the camera 1 to capture and record the translucent and surface images of the tobacco leaves. Subsequently, the control terminal 6 connects to the computer and uses a pre-set algorithm to finely process the acquired translucent and surface images of the tobacco leaves, generating a detailed tobacco leaf translucentness detection report. The entire process is meticulously designed to enhance the coordination and consistency between each step, significantly improving the efficiency and accuracy of the detection results.
[0016] The beneficial effects of this utility model are:
[0017] 1. The structural frame of the tobacco leaf transmittance detection device of this utility model is self-made, and the outer white shell layer is made of white metal plate. The structure of this utility model is simple, practical and easy to use; the camera, white light source, stage motor and luminous tobacco leaf stage are purchased from the market, and different models are purchased as needed, so that the detection conditions of this utility model have a wide range.
[0018] 2. The tobacco leaf transmittance detection device of this utility model includes a camera, a white light source, a light-emitting tobacco leaf platform and a platform motor, which are connected to a control terminal. The control terminal has a built-in RS485 communication part to transmit data with a computer and uses advanced image processing algorithms for analysis to obtain accurate transmittance analysis results of the tobacco leaves. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the tobacco leaf transmittance testing device of this utility model.
[0020] The attached diagram is labeled as follows: 1. Camera; 2. White light source; 3. Illuminated tobacco leaf carrier; 4. Carrier motor; 5. Moving slide rail; 51. Slider; 6. Control terminal; 7. Frame structure. Detailed Implementation
[0021] 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.
[0022] like Figure 1 The tobacco leaf transmittance detection device shown includes: a camera 1, a white light source 2, a light-emitting tobacco leaf stage 3, a control terminal 6, and a frame structure 7.
[0023] The structural frame 7 is cubic in shape, with a white shell on its periphery; a light-emitting tobacco leaf carrier 3 is arranged in the lower part of the cube, a camera 1 is arranged on the upper inner wall of the cube, and multiple white light sources 2 are arranged on the upper part of the side inner wall of the cube.
[0024] The frame structure 7 consists primarily of four metal rods, which are either round or square metal tubes. The perimeter is composed of six white panels, forming a cube. A door is located on the front of the frame structure 7. The main body of the frame structure 7 is constructed of durable metal rods, and its design aims to ensure stability and long-term operational reliability.
[0025] The luminous tobacco leaf carrier 3 is mounted on a slider 51 via a carrier motor 4, and the slider 51 is mounted on movable slide rails 5 at both ends. The movable slide rails 5 are fixedly arranged on the inner walls of both sides of the cubic structural frame 7. The luminous tobacco leaf carrier 3, controlled by an external control terminal 6 via the carrier motor 4, can move precisely inside and outside the cubic structural frame 7, achieving flexible operation and management.
[0026] The four white light sources 2 are strip-shaped and are respectively arranged on the upper part of the four inner walls of the cubic structural frame 7. Each white light source 2 illuminates vertically and focuses on the luminescent tobacco leaf stage 3. This design aims to ensure that the tobacco leaf surface receives uniform illumination, thereby avoiding data acquisition errors caused by uneven light distribution and improving measurement accuracy. The use of four strip-shaped white light sources ensures that the upper surface of the tobacco leaf is fully covered by white light, which not only effectively illuminates the shooting area but also maximizes the image quality, allowing for the capture of light and shadow variations on the tobacco leaf surface. The camera 1 is positioned appropriately on the upper inner wall of the cube, located at the center of the white light sources 2, enabling it to receive illumination from the four strip-shaped white light sources and capture every light and shadow variation on the surface of the luminescent tobacco leaf stage. These high-definition images are transmitted to the processing terminal and analyzed using advanced image processing algorithms to obtain accurate transmittance analysis results.
[0027] The camera 1 and the luminous tobacco leaf carrier 3 are on the same vertical line; this allows for better reception of light from four strip-shaped white light sources.
[0028] The control terminal 6 is wirelessly connected to the camera 1, the white light source 2, the luminous tobacco leaf carrier 3, and the carrier motor 4. The control terminal 6 can be composed of a microcontroller with a pre-programmed sequence for detecting the light transmittance of tobacco leaves. It also has a built-in RS485 communication unit for data transmission with a computer. The control terminal 6 is located on the lower inner wall of the cubic structural frame 7, but it can also be placed in other locations.
[0029] The procedure for detecting the light transmittance of tobacco leaves using the equipment of this invention is as follows:
[0030] A piece of tobacco leaf to be tested is placed safely and without damage on the luminescent tobacco leaf stage 3. During placement, it is crucial to ensure the leaf is spread out as much as possible to fully expose its surface. This prevents wrinkles from reducing the penetration of white light into the leaf, which could lead to misjudgments of the leaf's light transmittance by the terminal algorithm. The flatness of the tobacco leaf surface is essential for obtaining accurate light transmittance information, as any wrinkles or uneven surfaces can cause deviations in the detection data. Therefore, careful attention must be paid when placing the leaf to ensure it lies flat on the luminescent tobacco leaf stage 3 of the device, facilitating comprehensive and uniform illumination by the white light source.
[0031] After confirming that the tobacco leaves are placed on the luminescent tobacco leaf carrier 3, the process is initiated by pressing a button on the control terminal 6. The terminal's program drives the carrier motor 4 to start, smoothly pushing the luminescent tobacco leaf carrier 3 into the frame structure 7. Then, the control terminal 6 precisely adjusts the illumination, alternating between the white light source 2 above and the luminescent tobacco leaf carrier 3, while simultaneously activating the camera 1 to capture and record the translucent and surface images of the tobacco leaves. Subsequently, the control terminal 6 connects to the computer and uses a pre-set algorithm to finely process the acquired translucent and surface images of the tobacco leaves, generating a detailed tobacco leaf translucentness detection report. The entire process is meticulously designed to enhance the coordination and consistency between each step, significantly improving the efficiency and accuracy of the detection results.
[0032] The above description is only used to detail the specific embodiments of this utility model, but the technical solution proposed by this utility model is not limited to the above methods. All equivalent modifications and variations made by those skilled in the art to the technology proposed by this utility model without departing from the basic principles of this technology should be covered within the scope of the claims of this utility model.
Claims
1. A tobacco leaf transmittance detection apparatus, characterized by, It includes: camera (1), white light source (2), light-emitting tobacco platform (3), control terminal (6) and frame structure (7); The frame structure (7) is a cube, and the periphery is a white shell; the light-emitting tobacco platform (3) is arranged in the lower part of the cube, the camera (1) is arranged on the upper inner wall of the cube, and the plurality of white light sources (2) are arranged on the upper part of the side inner wall of the cube.
2. The tobacco leaf transmittance detection apparatus according to claim 1, wherein The main body of the frame structure (7) is four metal rods, and the metal rods are metal round pipes or metal square pipes; the periphery is six white plates, and the frame structure (7) is a cube surrounded by six white plates and four metal rods, and a door is opened on the front face of the frame structure (7).
3. The tobacco leaf transmittance detection apparatus according to claim 1, wherein The light-emitting tobacco platform (3) is arranged on the sliding block (51) through the platform motor (4), and the sliding block (51) is arranged at both ends of the moving slide rail (5); the moving slide rail (5) is fixedly arranged on the inner wall of the two sides in the cube of the frame structure (7).
4. The tobacco leaf transmittance detection apparatus according to claim 1, wherein The white light source (2) is four, which are arranged on the upper part of the four side inner walls in the cube of the frame structure (7).
5. The tobacco leaf transmittance detection apparatus according to claim 1, wherein The camera (1) and the light-emitting tobacco platform (3) are on the same vertical line.
6. The tobacco leaf transmittance detection apparatus according to claim 1 or 3, wherein The control terminal (6) is wirelessly connected with the camera (1), the white light source (2), the light-emitting tobacco platform (3) and the platform motor (4).