Household device for conveniently detecting aflatoxin and use method

Abstract

The invention relates to the technical field of food detection devices and methods, in particular to a household device for conveniently detecting aflatoxin and a use method.The household device comprises a handheld outer barrel, a smell detection assembly, an optical detection assembly, an airflow flowing mechanism and a signal processing and control assembly; the smell detection assembly comprises a taste sensor array installed at the lower end of the air gathering barrel and a smell sensor array located at the upper end of the taste sensor array, and the optical detection assembly comprises a color sensor, an irradiation lamp and an AI image recognition sensor which are located on the taste sensor array. According to the food color and image feature detection device, food is detected from multiple dimensions through cooperation of the taste sensor array and the smell sensor array, the accuracy of the detection result is improved, and the food color and image feature detection device is convenient to carry to different scenes for use and is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of food detection devices and methods, and in particular to a household convenient device for detecting aflatoxin and a usage method thereof. Background Technique

[0002] Aflatoxin is a toxic metabolite produced by fungi such as Aspergillus flavus and Aspergillus parasiticus, and has extremely high toxicity. Aflatoxin B1 has been listed as a class I carcinogen by the International Agency for Research on Cancer. Aflatoxin is usually easily generated in warm and humid places, and will multiply in large numbers in the temperature range of 28°C to 38°C, and grows fastest at about 33°C. Aflatoxin is commonly found in foods, especially those rich in starch and oil, such as peanuts, corn, rice, beans, nuts, etc., and household kitchen utensils such as chopsticks and cutting boards.

[0003] Currently, the detection methods for aflatoxin include enzyme-linked immunosorbent assay, fluorescence photometry, capillary electrophoresis, thin-layer chromatography, immunoaffinity column combined with fluorescence photometry, and rapid detection instruments, etc. Among them, enzyme-linked immunosorbent assay and rapid detection instruments are suitable for rapid detection, but enzyme-linked immunosorbent assay may have false positives, the kits need to be stored at low temperature, and the repeatability is poor. The equipment cost of rapid detection instruments is relatively high. Other methods are suitable for laboratory detection. There is currently no device that is generally applicable to non-professional testers such as families or general business operators and can relatively conveniently detect aflatoxin.

[0004] Based on the above situation, we propose a household convenient device for detecting aflatoxin to solve the above problems. Summary of the Invention

[0005] The present invention provides a household convenient device for detecting aflatoxin and a usage method thereof to solve the problem in the prior art that it is not convenient for non-professional testers such as families or general business operators to conveniently and rapidly detect aflatoxin.

[0006] The technical problems solved by the present invention are realized by adopting the following technical solutions: A household device for conveniently detecting aflatoxin, comprising a handheld outer cylinder, a taste and smell detection component, an optical detection component, an air flow mechanism, and a signal processing and control component. A wind collecting cylinder is coaxially connected inside the outer cylinder. The taste and smell detection component includes a taste sensor array installed at the lower end of the wind collecting cylinder and an olfactory sensor array located above the taste sensor array. The optical detection component includes a color sensor, an irradiation lamp, and an AI image recognition sensor located at the taste sensor array, which work together to obtain the color and image features of food. The air flow mechanism includes an air flow driving component connected to the upper end of the wind collecting cylinder and an air outlet pipe provided on the wind collecting cylinder. The output end of the air outlet pipe extends to the outside of the outer cylinder to drive air to be discharged from the air outlet pipe. The signal processing and control component includes a signal acquisition and pattern recognition module electrically connected to the taste sensor array, a signal processing and pattern recognition module electrically connected to the olfactory sensor array, and a PLC display controller electrically connected to the taste and smell detection component and the optical detection component. The PLC display controller also stores typical feature photos of aflatoxin, olfactory and taste feature curves, and is used to compare and analyze the received aflatoxin information data with the stored information data.

[0007] Preferably, the signal acquisition and pattern recognition module amplifies, screens, and recognizes the taste signal and transmits the characteristic taste curve to the PLC display controller. The signal processing and pattern recognition module amplifies, screens, processes, and recognizes the odor signal and transmits the characteristic odor curve to the PLC display controller.

[0008] Preferably, the wind collecting cylinder includes a conical part located at the lower end of the outer cylinder and a straight cylinder part integrally formed and connected to the conical part. The olfactory sensor array is connected to the straight cylinder part through a first bracket, and ventilation channels for ventilation are uniformly provided between the olfactory sensor array and the inner wall of the straight cylinder part.

[0009] Preferably, the taste sensor array is connected to the conical part through a second bracket, and the lower end surface of the taste sensor array is higher than the lower end surface of the outer cylinder for contacting food to detect taste information.

[0010] Preferably, the air flow driving component includes a servo motor and wind wings connected to the output shaft of the servo motor. The servo motor is connected to the inner wall of the straight cylinder part through a third bracket, and the wind wings are located directly above the olfactory sensor array.

[0011] Preferably, a plurality of air inlet arcs are provided at the lower end of the outer cylinder, legs are provided between adjacent two of the air inlet arcs, and air inlet holes are provided at the part between the legs on the outer cylinder and the wind collecting cylinder.

[0012] Preferably, the irradiation lamp can emit at least two different colors of light to cooperate with the color sensor and the AI image recognition sensor to collect information required for different detections.

[0013] Preferably, it further includes a warning device electrically connected to the PLC display controller. The warning device is used to emit sound and light warnings when the detected aflatoxin exceeds the set threshold.

[0014] A usage method of a household convenient device for detecting aflatoxin, based on the above-mentioned household convenient device for detecting aflatoxin, includes the following steps: S1: Place the outer cylinder on the food to be detected and ensure that the position of the food is not higher than the air inlet; S2: When the PLC display controller controls the lighting lamp to emit different colors of light, the color sensor and the AI image recognition sensor send the fluorescence characteristic colors that may appear of aflatoxin and the properties of the food seen, including the fluorescence part and shape, to the PLC display controller in real time; S3: The taste sensor array contacts the food and transmits the food taste information to the signal acquisition and pattern recognition module. After amplification, screening, and recognition, the characteristic taste curve of aflatoxin is transmitted to the PLC display controller. After the air flow driving component transmits the food odor to the olfactory sensor array, the odor information is transmitted to the signal processing and pattern recognition module. After amplification, screening, processing, and recognition, the characteristic musty smell intensity curve of Aspergillus flavus is transmitted to the PLC display controller; S4: The PLC display controller compares, analyzes, and calculates the received information with the stored data to determine whether aflatoxin is detected and makes corresponding prompts.

[0015] The beneficial effects of the present invention are as follows: Through the portable outer cylinder, it is convenient to carry to different scenarios for use, which is more convenient. And through the taste sensor array, the characteristic bitter taste brought by aflatoxin can be captured. The olfactory sensor array can identify the characteristic musty smell of Aspergillus flavus. The color sensor and the AI image recognition sensor can detect the color change of the food, the colony morphology, and the possible red fluorescence of aflatoxin. Multiple detection means confirm each other, detect the food from multiple dimensions, improve the accuracy of the detection result. The signal acquisition and pattern recognition module and the signal processing and pattern recognition module can quickly process and analyze the signals, and quickly complete data comparison and calculation through the PLC display controller, and the detection result can be obtained in a short time, saving the user's waiting time and improving the detection efficiency. Description of the Drawings

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Isometric structure schematic diagram provided by the present invention; Figure 2 Cross-sectional structure schematic provided by the present invention Figure 1 ; Figure 3 Cross-sectional structure schematic provided by the present invention Figure 2 ; Figure 4 Bottom view structure schematic diagram provided in the present invention; Figure 5 Electrical control principle provided in the present invention Figure 1 ; Figure 6 Electrical control principle provided in the present invention Figure 2 。

[0018] In the figure, 1. Outer cylinder; 2. Air collecting cylinder; 3. Taste sensor array; 4. Olfactory sensor array; 5. Color sensor; 6. Irradiation lamp; 7. AI image recognition sensor; 8. Air outlet pipe; 9. Signal acquisition and pattern recognition module; 10. Signal processing and pattern recognition module; 11. PLC display controller; 12. Conical part; 13. Straight cylinder part; 14. First bracket; 15. Ventilation channel; 16. Second bracket; 17. Servo motor; 18. Wind wing; 19. Third bracket; 20. Air inlet arc; 21. Leg; 22. Air inlet hole; 23. Warning device. Detailed implementation manners

[0019] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific drawings.

[0020] Refer to Figures 1-6As shown in the figure, a household device for conveniently detecting aflatoxin includes an outer cylinder 1. The outer cylinder 1 can be cylindrical for easy single-handed holding. Inside the outer cylinder 1, a wind-gathering cylinder 2 is coaxially arranged. An olfactory and gustatory detection component is installed in the wind-gathering cylinder 2. The olfactory and gustatory detection component includes a gustatory sensor array 3 installed at the lower end of the wind-gathering cylinder 2 and an olfactory sensor array 4 located above the gustatory sensor array 3. And it also includes an optical detection component and a signal processing and control component. The optical detection component includes a color sensor 5, an irradiation lamp 6, and an AI image recognition sensor 7 located at the gustatory sensor array 3, which are used to work together to obtain the color and image characteristics of food. The signal processing and control component includes a signal acquisition and pattern recognition module 9 electrically connected to the gustatory sensor array 3, a signal processing and pattern recognition module 10 electrically connected to the olfactory sensor array 4, and a PLC display controller 11 electrically connected to the olfactory and gustatory detection component and the optical detection component. The PLC display controller 11 also stores typical characteristic photos of aflatoxin, olfactory and gustatory characteristic curves, and is used to compare and analyze the received aflatoxin information data with the stored information data; Specifically, when in use, the outer cylinder 1 is placed on the food to be detected. The gustatory sensor array 3 and the olfactory sensor array 4 respectively transmit the perceived food taste and smell to the signal acquisition and pattern recognition module 9 and the signal processing and pattern recognition module 10. Since aflatoxin itself has no color and it is a colorless chemical substance. However, the Aspergillus flavus that produces aflatoxin is a light yellow mold. Under white light irradiation, light yellow mold spots can be seen on the surface of the contaminated food. Its initial colonies are white, medium-term are gray, mature colonies are black, and finally turn light yellow, which is the color of Aspergillus flavus. In particular, aflatoxin will show red fluorescence under ultraviolet light irradiation. Therefore, the PLC display controller 11 preferably can control the irradiation lamp 6 to emit at least two different colors of light, such as white light or ultraviolet light, to cooperate with the color sensor 5 and the AI image recognition sensor 7 to collect information required for different detections. For example, when the irradiation lamp 6 emits white light, the color sensor 5 transmits the colors on the food, including the characteristic colors of Aspergillus flavus such as possible colony white, gray, black, light yellow, etc., to the PLC display controller 11 in real time. At the same time, the AI image recognition sensor 7 transmits information such as the food type seen, including the position and shape of different color parts, to the PLC display controller 11 in real time. When the irradiation lamp 6 emits ultraviolet light, the color sensor 5 transmits the colors on the food, including the characteristic color of the red fluorescence emitted by possible aflatoxin, to the PLC display controller 11 in real time. At the same time, the AI image recognition sensor 7 transmits information such as the food properties seen, including the position and shape of the red fluorescence part, to the PLC display controller 11 in real time. After the PLC display controller 11 compares, analyzes, and calculates the received information data with the stored information data according to the program, it judges whether the conclusion of detecting aflatoxin is obtained.

[0021] Further, referring to Figures 2-3 As shown, in order to facilitate the full detection of the smell of food by the olfactory sensor array 4, an air flow mechanism is further included. The air flow mechanism includes an air flow driving component connected to the upper end of the air collecting cylinder 2 and an air outlet pipe 8 provided on the air collecting cylinder 2. The output end of the air outlet pipe 8 extends to the outside of the outer cylinder 1 and is used to drive air to be discharged from the air outlet pipe 8. The air flow driving component includes a servo motor 17 and a wind wing 18 connected to the output shaft of the servo motor 17. The servo motor 17 is connected to the inner wall of the air collecting cylinder 2 through a third bracket 19. The wind wing 18 is located directly above the olfactory sensor array 4. By driving the wind wing 18 to rotate through the servo motor 17, a negative pressure is generated inside the air collecting cylinder 2, and the air flow is sucked in from the bottom of the outer cylinder 1 and then discharged from the air outlet pipe 8. The smell of food carried in the air flow comes into contact with the olfactory sensor array 4 for detection; And the air collecting cylinder 2 includes a conical portion 12 located at the lower end of the outer cylinder 1 and a straight cylinder portion 13 integrally formed and connected to the conical portion 12. The olfactory sensor array 4 is connected to the straight cylinder portion 13 through a first bracket 14, and ventilation channels 15 for ventilation are uniformly provided between the olfactory sensor array 4 and the inner wall of the straight cylinder portion 13, ensuring that the air flow carrying the smell of food can fully and evenly come into contact with the olfactory sensor array 4, thereby improving the accuracy and sensitivity of olfactory detection. A plurality of air inlet arcs 20 are provided at the lower end of the outer cylinder 1, legs 21 are provided between adjacent two air inlet arcs 20, and air inlet holes 22 are provided at the part between the legs 21 on the outer cylinder 1 and the air collecting cylinder 2. When the servo motor 17 works and the wind wing 18 rotates, air can enter the air collecting cylinder 2 through the air inlet arcs 20 and the air inlet holes 22, pass through the lower surface and the circumference of the olfactory sensor array 4, and then pass through the wind wing 18 and enter the air outlet pipe 8 and be discharged, ensuring that the smell of food can quickly and fully come into contact with the olfactory sensor array 4 and improving the detection efficiency.

[0022] Referring to Figure 3 As shown, further, the taste sensor array 3 is connected to the conical portion 12 through a second bracket 16, and the lower end surface of the taste sensor array 3 is higher than the lower end surface of the outer cylinder 1 and is used to contact the food for taste information detection, so that during the detection process, the taste sensor array 3 can directly contact the food and accurately obtain taste information.

[0023] Further, the signal acquisition and pattern recognition module 9 amplifies, screens, and recognizes the taste signals and transmits the characteristic taste curve to the PLC display controller 11. The signal processing and pattern recognition module 10 amplifies, screens, processes, and recognizes the odor signals and transmits the characteristic odor curve to the PLC display controller 11. After the taste sensor array 3 transmits the collected taste signals to the signal acquisition and pattern recognition module 9, the signals first enter the signal amplifier section. The signal amplifier selects a low-noise and high-gain operational amplifier, which can automatically adjust the amplification factor according to the characteristics of the taste signals. Then, the amplified taste signals enter the screening and denoising unit and finally enter the pattern recognition stage. In the pattern recognition unit, a large number of taste feature template libraries related to aflatoxin are pre-stored. The currently processed taste signals are compared and matched with the feature templates in the template library. By calculating the similarity between the signals and each template, the most matching template is found, and the corresponding aflatoxin characteristic bitter intensity taste curve is extracted from it and finally transmitted to the PLC display controller 11. The odor signals transmitted from the olfactory sensor array 4 first undergo preprocessing through the sensor signal conditioning circuit and then enter the digital signal processor for feature extraction and analysis. On the basis of feature extraction and analysis, the signal processing and pattern recognition module 10 uses a pre-trained odor recognition model to screen and recognize the odor signals. When the characteristic odor of Aspergillus flavus is recognized, the module further calculates and generates the characteristic musty smell intensity curve of Aspergillus flavus and finally transmits it to the PLC display controller 11. Then, based on the programming, the received information data is compared, analyzed, and calculated with the stored information data to display the conclusion of whether aflatoxin is detected.

[0024] And it further includes a warning device 23 electrically connected to the PLC display controller 11. The warning device 23 is used to emit sound and light warnings when the detected aflatoxin exceeds the set threshold. When the aflatoxin in the food is detected to be lower than the national standard allowable limit, it can display green. When it exceeds the national standard allowable limit, in order to attract special attention from personnel, the warning device 23 can also emit a prominent color and warning sound.

[0025] The present invention also provides a usage method for a household device for conveniently detecting aflatoxin. This method is implemented based on the above-mentioned household device for conveniently detecting aflatoxin, and the method includes the following steps: S1: Place the outer cylinder 1 on the food to be detected and ensure that the position of the food is not higher than the air inlet to avoid the food blocking the air inlet and preventing external air from entering the air collecting cylinder 2, which affects the air circulation effect; S2: When the PLC display controller 11 controls the lighting lamp to emit lights of different colors, the fluorescence characteristic colors emitted by aflatoxin that may appear, as well as the food properties seen, including the fluorescence part and shape, are sent to the PLC display controller 11 in real time through the color sensor 5 and the AI image recognition sensor 7; S3: The taste sensor array 3 contacts the food to transmit the food taste information to the signal acquisition and pattern recognition module 9. After amplification, screening, and recognition, the characteristic taste curve of aflatoxin is transmitted to the PLC display controller 11. After the air flow driving component transmits the food odor to the olfactory sensor array 4, the odor information is transmitted to the signal processing and pattern recognition module 10. After amplification, screening, processing, and recognition, the characteristic musty smell intensity curve of Aspergillus flavus is transmitted to the PLC display controller 11; S4: The PLC display controller 11 compares, analyzes, and calculates the received information with the stored data to determine whether aflatoxin is detected and makes corresponding prompts.

[0026] It should be noted that a lithium battery for providing power can also be installed in the outer cylinder 1, and a charging port for charging the lithium battery is provided, etc., so that it has an independent power system to ensure the independence and portability of the detection device. At the same time, olfactory and taste characteristic data can be collected through the electronic nose and electronic tongue devices and transmitted to the PLC display controller 11. The curve data is associated and stored with the corresponding food sample information, aflatoxin concentration information, etc., so as to be matched and compared in subsequent detection and analysis. An adaptive self-learning software can also be built into the PLC display controller 11. As the number of detections increases and the detection data accumulates, the detection model and algorithm are continuously optimized, and the data processing parameters, pattern recognition rules, etc. are automatically adjusted to better adapt to different types of foods, complex detection environments, and changes in aflatoxin characteristics, continuously improving the detection accuracy and reliability.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A household device for conveniently detecting aflatoxin, characterized in that, Comprising; A handheld outer cylinder (1), inside which a wind-gathering cylinder (2) is coaxially connected; A taste and smell detection component, which includes a taste sensor array (3) installed at the lower end of the wind-gathering cylinder (2) and an olfactory sensor array (4) located above the taste sensor array (3); An optical detection component, which includes a color sensor (5), an irradiation lamp (6) and an AI image recognition sensor (7) located at the taste sensor array (3), for working together to obtain food color and image features; An air flow mechanism, which includes an air flow driving component connected to the upper end of the wind-gathering cylinder (2) and an air outlet pipe (8) provided on the wind-gathering cylinder (2), and the output end of the air outlet pipe (8) extends to the outside of the outer cylinder (1), for driving air to be discharged from the air outlet pipe (8); A signal processing and control component, which includes a signal acquisition and pattern recognition module (9) electrically connected to the taste sensor array (3), a signal processing and pattern recognition module (10) electrically connected to the olfactory sensor array (4), and a PLC display controller (11) electrically connected to the taste and smell detection component and the optical detection component. The PLC display controller (11) also stores typical feature photos of aflatoxin, olfactory and taste feature curves, for comparing and analyzing the received aflatoxin information data with the stored information data.

2. The device for conveniently detecting aflatoxin at home according to claim 1, characterized in that, The signal acquisition and pattern recognition module (9) amplifies, screens and recognizes the taste signal and transmits the characteristic taste curve to the PLC display controller (11), and the signal processing and pattern recognition module (10) amplifies, screens and processes the odor signal and transmits the characteristic odor curve to the PLC display controller (11).

3. The device for conveniently detecting aflatoxin for household use according to claim 1, wherein The wind-gathering cylinder (2) includes a conical part (12) located at the lower end of the outer cylinder (1) and a straight cylinder part (13) integrally formed and connected to the conical part (12). The olfactory sensor array (4) is connected to the straight cylinder part (13) through a first bracket (14), and ventilation channels (15) for ventilation are evenly arranged between the olfactory sensor array (4) and the inner wall of the straight cylinder part (13).

4. The device for conveniently detecting aflatoxin for household use according to claim 3, wherein, The taste sensor array (3) is connected to the conical part (12) through a second bracket (16), and the lower end surface of the taste sensor array (3) is higher than the lower end surface of the outer cylinder (1), for contacting food to detect taste information.

5. The device for conveniently detecting aflatoxin at home according to claim 3, wherein, The air flow driving component includes a servo motor (17) and a wind wing (18) connected to the output shaft of the servo motor (17). The servo motor (17) is connected to the inner wall of the straight cylinder part (13) through a third bracket (19), and the wind wing (18) is located directly above the olfactory sensor array (4).

6. The device for conveniently detecting aflatoxin for household use according to claim 1, characterized in that, A plurality of air inlet arcs (20) are provided at the lower end of the outer cylinder (1), legs (21) are provided between adjacent two of the air inlet arcs (20), and air inlet holes (22) are provided at the part between the legs (21) on the outer cylinder (1) and the wind-gathering cylinder (2).

7. The device for conveniently detecting aflatoxin for household use according to claim 1, characterized in that, The irradiation lamp (6) can emit at least two different colors of light to cooperate with the color sensor (5) and the AI image recognition sensor (7) to collect information required for different detections.

8. The device for conveniently detecting aflatoxin for household use according to claim 1, characterized in that, It further includes a warning device (23) electrically connected to the PLC display controller (11), and the warning device (23) is used to emit sound and light warnings when the detected aflatoxin exceeds the set threshold.

9. A method for using a device for conveniently detecting aflatoxin at home, based on the device for conveniently detecting aflatoxin described in claims 1-8, characterized in that, It includes the following steps: S1: Place the outer cylinder (1) on the food to be detected and ensure that the position of the food is not higher than the air inlet; S2: When the PLC display controller (11) controls the illumination lamp to emit different colors of light, the color sensor (5) and the AI image recognition sensor (7) transmit the fluorescence characteristic colors emitted by the possible aflatoxins and the properties of the food seen, including the fluorescence part and shape, to the PLC display controller (11) in real time; S3: The taste sensor array (3) contacts the food and transmits the food taste information to the signal acquisition and pattern recognition module (9). After amplification, screening, and recognition, the characteristic taste curve of aflatoxin is transmitted to the PLC display controller (11). After the air flow driving component transmits the food odor to the olfactory sensor array (4), the odor information is transmitted to the signal processing and pattern recognition module (10). After amplification, screening, processing, and recognition, the characteristic musty smell intensity curve of Aspergillus flavus is transmitted to the PLC display controller (11); S4: The PLC display controller (11) compares, analyzes, and calculates the received information with the stored data to determine whether aflatoxin is detected and makes corresponding prompts.

Images