Detection device for detecting sample concentration based on image recognition method

Abstract

The utility model relates to the technical field of chemical detection, and provides a detection device for detecting sample concentration based on an image recognition method. The detection container for loading a test sample is detachably mounted on the machine body; a detection module for implementing concentration detection based on an image recognition method is arranged on the machine body; the detection module comprises a light source assembly for projecting a light source to the test sample and a camera module for acquiring an image, the shooting end of the camera module and the irradiation end of the light source assembly are oppositely arranged, and the test sample is arranged between the shooting end of the camera module and the irradiation end of the light source assembly; the light source assembly and the camera module are electrically connected with a main control board on the machine body. The detection module adopts an image recognition method, the light source assembly and the camera module are oppositely arranged, it is ensured that light evenly penetrates through a test sample, the camera module can accurately capture a sample image, and therefore the detection accuracy is improved. The main control board integrally controls the light source assembly and the camera module, is convenient to carry and is suitable for laboratory or on-site rapid detection.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical detection, specifically to a detection device for detecting sample concentration based on image recognition. Background Technology

[0002] Currently, portable formaldehyde detectors (such as electrochemical sensors or semiconductor detectors) generally suffer from insufficient accuracy, especially at low concentrations where they are easily affected by ambient temperature, humidity, and cross-gas interference, leading to low reliability of test results. Therefore, laboratories still rely on chemical reagent methods (such as phenol reagent image recognition and acetylacetone methods) for accurate determination. However, these methods typically require precise instruments like spectrophotometers for quantitative analysis and cannot be performed entirely outside the laboratory, making them unsuitable for rapid on-site testing. With increasing health awareness, consumers are demanding more testing for harmful components such as formaldehyde commonly encountered in indoor air and cosmetics (such as foundation), but existing testing methods cannot simultaneously achieve both portability and high accuracy.

[0003] Therefore, the applicant designed a portable testing instrument that can produce highly accurate test results even without conducting the tests in a laboratory. Utility Model Content

[0004] This invention proposes a detection device for detecting sample concentration based on image recognition. The detection module employs image recognition, and by aligning the light source component and the camera module, it ensures uniform light penetration into the test sample. The camera module accurately captures the sample image, thereby improving detection accuracy. The main control board integrates control of the light source component and the camera module, achieving automated detection. The overall structure is compact, easy to operate, and portable, making it suitable for rapid detection in laboratories or on-site.

[0005] A detection device for detecting sample concentration based on image recognition method, designed for this purpose, includes a main body; a detection container for loading test samples is detachably installed on the main body; the main body is provided with a detection module for concentration detection based on image recognition method; the detection module includes a light source component for projecting light onto the test sample, and a camera module for acquiring images, wherein the shooting end of the camera module and the irradiation end of the light source component are arranged opposite to each other, and the test sample is placed between the shooting end of the camera module and the irradiation end of the light source component; the light source component and the camera module are electrically connected to the main control board on the main body.

[0006] The detection module also includes a light-diffusing plate, which is placed between the test sample and the illumination end of the light source component. The light source generated by the light source component passes through the light-diffusing plate and is projected onto the test sample. The camera module, test sample, light-diffusing plate and light source component are arranged in a straight line in sequence.

[0007] The detection module also includes a fixed bracket fixed to the machine body, a light source assembly disposed at one end of the inner cavity of the fixed bracket, a camera module disposed at the other end of the inner cavity of the fixed bracket, and a light distribution plate disposed in the inner cavity of the fixed bracket.

[0008] The machine body is provided with a machine compartment, and the detection module is set inside the machine compartment. The machine body is provided with a positioning part for positioning and installing the detection container. The detection container extends at least partially into the machine compartment and is placed between the shooting end of the camera module and the illumination end of the light source component.

[0009] The positioning part is adapted to the outer surface of the detection container. The top of the positioning part is connected to the outside, and the bottom of the positioning part is connected to the machine compartment. The detection container is positioned and inserted into the positioning part. The machine body is provided with a cover for covering or opening the positioning part.

[0010] The machine body is equipped with a pump body, the suction end of the pump body is connected to the inner cavity of the detection container, and the pump body is electrically connected to the main control board; when the pump body is working, a negative pressure is formed in the inner cavity of the detection container, and the test sample enters the inner cavity of the detection container through the sample inlet of the detection container.

[0011] The main control board is equipped with a communication module, which wirelessly connects to the control terminal, allowing the control terminal to wirelessly control the main control board.

[0012] The machine body is equipped with a control module for inputting operation commands and a display module for broadcasting graphic and text information. The control module and the display module are electrically connected to the main control board.

[0013] The testing container is made of a transparent material.

[0014] The detection device is a formaldehyde detection device used to detect the formaldehyde concentration in the surrounding air.

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

[0016] By loading test samples and reaction reagents into a detection container and using a detection module to capture images of the mixed reaction, the traditional laboratory chemical testing process is miniaturized, resolving the conflict between portability and accuracy. The transparent design of the detection container ensures light transmission, while image analysis technology can quantify color changes in the reaction with accuracy approaching laboratory standards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first embodiment of the present invention, showing the detection device for detecting sample concentration based on image recognition in a ready-to-use state.

[0018] Figure 2 This is a schematic diagram of the detection device for detecting sample concentration based on image recognition method in the state of the container to be placed, according to the first embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the detection device for detecting sample concentration based on image recognition method in the detection and use state according to the first embodiment of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the fixed bracket according to the first embodiment of this utility model.

[0021] Figure 5 This is a schematic cross-sectional view of the detection device for detecting sample concentration based on image recognition method in the detection and use state, according to the second embodiment of this utility model.

[0022] Figure 6 This is a three-dimensional structural diagram of the built-in pump body of the detection device for detecting sample concentration based on image recognition method according to the second embodiment of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the detection device for detecting sample concentration based on image recognition method in the detection and use state, according to the second embodiment of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0025] First embodiment:

[0026] See Figures 1-4 A detection device for detecting sample concentration based on image recognition method includes a body 1; a detection container 2 for loading test samples is detachably installed on the body 1; the body 1 is provided with a detection module 3 for concentration detection based on image recognition method; the detection module 3 includes a light source component 4 for projecting light onto the test sample, and a camera module 5 for acquiring images, wherein the shooting end of the camera module 5 and the irradiation end of the light source component 4 are arranged opposite each other, and the test sample is placed between the shooting end of the camera module 5 and the irradiation end of the light source component 4; the light source component 4 and the camera module 5 are electrically connected to the main control board 7 on the body 1.

[0027] The detection module 3 employs image recognition, ensuring uniform light penetration into the test sample through the opposing arrangement of the light source component 4 and the camera module 5. The camera module 5 accurately captures the sample, thereby improving detection accuracy. The main control board 7 integrates control of the light source component 4 and the camera module 5 to achieve automated detection. The overall structure is compact, portable, and easy to operate, suitable for rapid testing in laboratories or on-site.

[0028] The detection module 3 also includes a light-diffusing plate 6, which is disposed between the test sample and the illumination end of the light source assembly 4. The light source generated by the light source assembly 4 passes through the light-diffusing plate 6 and is projected onto the test sample. The camera module 5, the test sample, the light-diffusing plate 6 and the light source assembly 4 are arranged in a straight line in sequence.

[0029] The placement of the light-diffusing plate 6 ensures uniform diffusion of the light emitted by the light source assembly 4, avoiding detection deviations caused by local light intensity differences and significantly improving the reliability of the detection results. The linear arrangement of the camera module 5, test sample, light-diffusing plate 6, and light source assembly 4 optimizes the optical path structure, reduces stray light interference, and ensures clear images and stable data acquired by the camera module 5.

[0030] The light-diffusing plate 6 is made of a light-transmitting material, and it has a transparent frosted surface for softening the light from the light source assembly 4. The transparent frosted surface of the light-diffusing plate 6 evenly scatters the light from the light source assembly 4, eliminating the hotspot effect and ensuring uniform illumination of the reaction area within the detection container 2, thus improving the consistency of image analysis.

[0031] In this embodiment, the frosted surface design of the light-diffusing plate 6 further optimizes the softness of the light, ensuring uniform illumination of the reaction area inside the detection container 2.

[0032] The detection module 3 also includes a fixed bracket 15 fixed on the body 1, a light source assembly 4 disposed at one end of the inner cavity of the fixed bracket 15, a camera module 5 disposed at the other end of the inner cavity of the fixed bracket 15, and a light distribution plate 6 disposed in the inner cavity of the fixed bracket 15.

[0033] In this embodiment, the fixing bracket 15 is provided with a first fixing groove for fixing the light source assembly 4 and a second fixing groove for fixing the light diffusion plate 6.

[0034] The fixed bracket 15 integrates the light source assembly 4, the camera module 5, and the light diffuser 6 into one unit, ensuring the relative positions of the optical components are fixed and preventing optical path misalignment due to vibration or movement, thereby guaranteeing the stability of long-term detection. The internal cavity design of the fixed bracket 15 can also shield external ambient light interference, further improving the signal-to-noise ratio. In addition, the modular structure facilitates assembly and maintenance, reduces production costs, and is suitable for large-scale application.

[0035] The machine body 1 is provided with a machine compartment 8, and the detection module 3 is set inside the machine compartment 8. The machine body 1 is provided with a positioning part 9 for positioning and installing the detection container 2. The detection container 2 extends at least partially into the machine compartment 8 and is placed between the shooting end of the camera module 5 and the irradiation end of the light source assembly 4.

[0036] The housing 8 provides a sealed space for the detection module 3, preventing dust or moisture from affecting the performance of optical components and extending the lifespan of the device. The positioning unit 9 ensures precise positioning of the detection container 2, keeping the sample always in the optimal detection area (between the camera module 5 and the light source assembly 4), avoiding detection errors caused by positional deviations. This design is particularly suitable for continuous batch testing; users only need to insert the detection container 2 for automatic alignment, greatly improving operational convenience.

[0037] The opposing arrangement of the light source assembly 4 and the camera module 5 forms a transmission light path, enabling the camera module 5 to clearly capture color changes inside the detection container 2 and avoid affecting image acquisition by the camera module 5 due to the dim internal environment of the machine body 1.

[0038] The detection module 3 also includes a light-diffusing plate 6, which is disposed between the detection container 2 and the light-emitting direction of the light source assembly 4; the camera module 5, the detection container 2, the light-diffusing plate 6 and the light source assembly 4 are disposed sequentially on the same axial direction of the body 1.

[0039] In this embodiment, the light source assembly 4 includes an LED light panel, light strip, or LED beads, etc.

[0040] The positioning part 9 is adapted to the outer surface of the detection container 2. The positioning part 9 is sleeve-shaped to adapt to the detection container 2 with a circular outer surface, or the positioning part 9 is square-shaped to adapt to the detection container 2 with a square outer surface. The top of the positioning part 9 is connected to the outside, and the bottom of the positioning part 9 is connected to the machine compartment 8. The detection container 2 is positioned and inserted into the positioning part 9. The machine body 1 is provided with a cover 10 for covering or opening the positioning part 9.

[0041] The sleeve-shaped positioning part 9 and the detection container 2 are designed to be inserted into each other for quick positioning and fixation, avoiding the tedious steps of manual adjustment. The cover 10 can cover the positioning part 9 and protect the inside of the machine compartment 8 from dirt. It also enhances the durability and portability of the product.

[0042] The main control board 7 is equipped with a communication module. The main control board 7 is wirelessly connected to the control terminal through the communication module. The control terminal wirelessly controls the main control board 7, for example, through remote operation via a mobile APP.

[0043] The combination of the control and display modules provides a human-machine interface, allowing users to directly input parameters or view test results, reducing reliance on professionals. The main control board 7 integrates data processing functions, displaying concentration values ​​or alarm information in real time, enhancing the equipment's practicality and versatility, making it suitable for various scenarios such as homes, industries, or laboratories.

[0044] In this embodiment, the control terminal and the main control board 7 communicate via a wireless communication module. Optional wireless communication modules include, but are not limited to, the following types:

[0045] Wi-Fi modules (such as ESP8266, ESP32, etc.) support the 2.4GHz / 5GHz frequency bands and are suitable for short-to-medium distance data transmission. They can realize real-time data interaction with smartphones, tablets or cloud servers, facilitating remote monitoring and analysis.

[0046] Bluetooth modules (such as BLE 4.0 / 5.0, Classic Bluetooth) are suitable for short-range connections of portable devices (such as direct connection to mobile apps) due to their Bluetooth Low Energy (BLE) technology, while Classic Bluetooth supports higher bandwidth and is suitable for large-capacity image transmission.

[0047] ZigBee modules (such as CC2530, CC2652, etc.) are suitable for low-power, self-organizing IoT scenarios, and are suitable for multi-device collaborative detection or distributed monitoring in industrial environments.

[0048] LoRa modules (such as SX1276, RA-02, etc.) offer long-distance, low-power communication, making them suitable for outdoor or large-scale environmental monitoring (such as formaldehyde distribution detection at construction sites).

[0049] NB-IoT modules (such as BC95, ME3616, etc.) are based on the wide-area coverage of cellular networks and are suitable for applications that require long-term network connection to report data (such as air quality monitoring by environmental protection departments).

[0050] RF modules (such as NRF24L01, SI4432, etc.) enable point-to-point communication in custom frequency bands, suitable for low-cost, proprietary protocol data transmission needs.

[0051] The diverse selection of wireless communication modules allows devices to be adapted to different scenarios, such as:

[0052] Bluetooth / Wi-Fi enables real-time data synchronization for consumer-grade portable devices (such as viewing results on a user's mobile app).

[0053] LoRa / NB-IoT supports remote monitoring and big data analysis in professional fields;

[0054] Modular design (such as compatibility with multiple communication protocols through the interface of the main control board 7) further enhances the expandability and adaptability of the device.

[0055] The control terminal is configured as a display integrated with the main control board 7 on the body 1; or, the control terminal is configured as a display terminal outside the body 1.

[0056] The flexible configuration of the control terminal (integrated or external) meets the needs of different scenarios. For example, an external tablet computer (display terminal) can expand data analysis functions and is suitable for professional users.

[0057] The display terminal is a mobile phone, laptop, desktop computer, or tablet computer.

[0058] The machine body 1 is equipped with a control module for inputting operation commands and a display module for broadcasting graphic and text information. The control module and the display module are electrically connected to the main control board 7.

[0059] The detection container 2 is made of a transparent material. The transparent material (such as glass or optical-grade plastic) of the detection container 2 ensures low-loss light transmission while avoiding interference from the material itself with the reaction reagents, thus ensuring the authenticity of the detection data.

[0060] In this embodiment, the cover 10 is rotated to open and close on the body 1. When the cover 10 is closed, it blocks the positioning part 9. When the detection device is in a standby state, it can prevent external dust and moisture from entering the body 1 along the positioning part 9.

[0061] In this embodiment, the body 1 is assembled from two shells, upper and lower. The top surface of the upper shell is provided with an opening forming a positioning part 9. The inner edge of the opening extends downward toward the inside of the upper shell to form a limiting ring for limiting the outer side of the detection container 2, so that the detection container 2 is positioned and installed on the body 1 to prevent the detection container 2 from moving.

[0062] The body 1 is equipped with a rechargeable battery or an external power supply port;

[0063] The body 1 is equipped with a start button.

[0064] In this embodiment, the detection container 2 is a disposable item, and it needs to be centrally recycled after each use.

[0065] Second embodiment:

[0066] See Figures 5-7The detection device for detecting sample concentration based on image recognition method differs from the first embodiment in that: the body 1 is provided with a pump body 11, the suction end of the pump body 11 is connected to the inner cavity of the detection container 2, and the pump body 11 is electrically connected to the main control board 7; when the pump body 11 is working, a negative pressure is formed in the inner cavity of the detection container 2, and the test sample enters the inner cavity of the detection container 2 through the sample inlet end of the detection container 2.

[0067] The detection container 2 automatically draws in the test sample using negative pressure, avoiding volume errors or contamination risks associated with manual sample introduction, making it particularly suitable for rapid collection of gas samples. The main control board 7 controls the start and stop of the pump 11, achieving automated linkage between sample introduction and detection, thus improving detection efficiency. This design offers significant advantages in environmental monitoring (such as formaldehyde detection), enabling real-time extraction and analysis of air samples, reducing manual operation time.

[0068] The detection device is a formaldehyde detection device used to detect the formaldehyde concentration in the surrounding air.

[0069] In this embodiment, the cover 13 of the detection container 2 is provided with an air inlet 12 and an air outlet 14 for connecting to a pipe. The air outlet 14 is connected to the suction end of the pump body 11 through a pipe. The machine body 1 is provided with a clearance at the connection between the suction end of the pump body 11 and the pipe. The pump body 11 is installed in the lower housing of the machine body 1, and the lower housing of the machine body 1 is provided with an opening corresponding to the output end of the pump body 11.

[0070] In this embodiment, the steps for detecting formaldehyde in the air are as follows:

[0071] First, add water and reagent A to the test container 2. After reagent A and water are mixed, place the container on the main body 1. Assemble the test container 2 with the cap 13. After the test container 2 has been standing on the main body 1 for a period of time, the pump 11 is started to extract the air from the test container 2. Outside air enters the test container 2 through the cap 13. The pump 11 stops after running for a period of time. After the test container 2 has been standing on the main body 1 for the corresponding time, the test container 2 is separated from the cap 13. Reagent B is added to the test container 2 to mix with the liquid in the test container 2. Then, the test container 2 is reinstalled with another cap. After the reagent B reacts chemically with the liquid in the test container 2 for the corresponding time, the detection module 3 is started and acquires the image of the reaction liquid in the corresponding test container 2. By comparing the image colors, accurate experimental test results are obtained.

[0072] In this embodiment, since this application mainly protects mechanical structures, the detailed composition of reagent A and reagent B does not need to be described in detail in this embodiment.

[0073] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A detection device for detecting sample concentration based on image recognition, comprising a body (1); characterized in that: The detection container (2) for loading the test sample is detachably installed on the body (1); the body (1) is provided with a detection module (3) for concentration detection based on image recognition method; the detection module (3) includes a light source component (4) for projecting light source onto the test sample and a camera module (5) for acquiring images. The shooting end of the camera module (5) and the irradiation end of the light source component (4) are arranged opposite to each other. The test sample is placed between the shooting end of the camera module (5) and the irradiation end of the light source component (4); the light source component (4) and the camera module (5) are electrically connected to the main control board (7) on the body (1).

2. The detection device for detecting concentration of a sample based on image recognition method according to claim 1, characterized in that: The detection module (3) also includes a light-diffusing plate (6), which is set between the test sample and the illumination end of the light source assembly (4). The light source generated by the light source assembly (4) passes through the light-diffusing plate (6) and is projected onto the test sample. The camera module (5), the test sample, the light-diffusing plate (6) and the light source assembly (4) are arranged in a straight line in sequence.

3. The detection device for detecting concentration of a sample based on image recognition method according to claim 2, characterized in that: The detection module (3) also includes a fixed bracket (15) fixed on the body (1), a light source assembly (4) disposed at one end of the inner cavity of the fixed bracket (15), a camera module (5) disposed at the other end of the inner cavity of the fixed bracket (15), and a light distribution plate (6) disposed in the inner cavity of the fixed bracket (15).

4. The detection device for detecting concentration of a sample based on image recognition method according to claim 1, characterized in that: The machine body (1) is provided with a machine compartment (8), and the detection module (3) is set inside the machine compartment (8). The machine body (1) is provided with a positioning part (9) for positioning and installing the detection container (2). The detection container (2) extends at least partially into the machine compartment (8) and is placed between the shooting end of the camera module (5) and the irradiation end of the light source assembly (4).

5. The detection device for detecting concentration of a sample based on image recognition method according to claim 4, characterized in that: The positioning part (9) is adapted to the outer surface of the detection container (2). The top of the positioning part (9) is connected to the outside, and the bottom of the positioning part (9) is connected to the machine compartment (8). The detection container (2) is positioned and inserted into the positioning part (9). The machine body (1) is provided with a cover (10) for covering or opening the positioning part (9).

6. The detection device for detecting concentration of a sample based on image recognition method according to claim 1, wherein: The machine body (1) is equipped with a pump body (11), the suction end of the pump body (11) is connected to the inner cavity of the detection container (2), and the pump body (11) is electrically connected to the main control board (7); when the pump body (11) is working, a negative pressure is formed in the inner cavity of the detection container (2), and the test sample enters the inner cavity of the detection container (2) through the sample inlet of the detection container (2).

7. The detection device for detecting concentration of a sample based on image recognition method according to claim 1, wherein: The main control board (7) is equipped with a communication module. The main control board (7) is wirelessly connected to the control terminal through the communication module, and the control terminal wirelessly controls the main control board (7).

8. The detection device for detecting concentration of a sample based on image recognition method according to claim 1, wherein: The machine body (1) is equipped with a control module for inputting operation instructions and a display module for broadcasting graphic information. The control module and the display module are electrically connected to the main control board (7).

9. The detection device for detecting sample concentration based on image recognition method according to claim 1, characterized in that: The detection container (2) is made of transparent material.

10. The detection device for detecting sample concentration based on image recognition method according to any one of claims 1-9, characterized in that: The detection device is a formaldehyde detection device used to detect the formaldehyde concentration in the surrounding air.

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