Food safety comprehensive detector based on Internet of Things and detection method thereof
By combining an independent compartment with a sealed cap and through automated operation, the problem of mixed reagents in multi-sample testing is solved, achieving efficient and highly accurate food safety testing.
Patent Information
- Application Number
- CN202511781391.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-29
- Publication Date
- 2026-02-13
AI Technical Summary
In traditional food safety testing instruments, the volatile reagents from multiple samples mix, leading to inaccurate test results and poor stability of the testing environment.
The design incorporates a combination of independent compartments and a sealed cap, with each sample placed in a separate compartment. Automated operation is achieved through drive and flipping components, while clamping components ensure sample stability and prevent reagent contamination and interference.
Ensuring an independent and pristine testing environment for each sample improves testing accuracy and efficiency, reduces operational complexity, and enhances the versatility of testing instruments.
Smart Images
Figure CN121522112A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a food safety detector, in particular to a food safety comprehensive detector based on Internet of Things and a detection method thereof, and belongs to the technical field of food safety detection equipment. BACKGROUND
[0002] The food safety detector based on Internet of Things is an intelligent detection device integrating Internet of Things technology and rapid detection technology. The detector is based on traditional food safety detection technology and integrates sensing, transmission and interconnection core Internet of Things functions. The detector can accurately obtain detection indexes in food and realize real-time uploading of detection data to the cloud. The detection process is traceable and data resources are shareable. The detection module of the device covers multiple key safety indexes such as pesticide, veterinary drug and heavy metal residues, microorganisms and the like. Detection data is directly synchronized to the management platform through the network without manual input. The device can be widely applied to rapid screening of harmful substances in the food field and realizes real-time interconnection and sharing of data. Moreover, the device can be flexibly adapted to multiple use scenarios such as fields, farmers' markets and catering enterprises.
[0003] The core structure of the detector is mainly composed of a detection module, an Internet of Things transmission module, a main control module, a man-machine interaction module, a power supply module and an auxiliary structure around the two core logics of detection and interconnection. The detection module usually includes or integrates an optical detection unit, an electrochemical detection unit and a biological sensing unit. Each unit corresponds to a different detection principle, forming a multi-dimensional detection capability. The auxiliary structure is equipped with a sample storage device in the form of a placing disc. The disc body is provided with matching placing grooves for placing test tubes, culture dishes and the like containing samples. During detection, the test tube or culture dish containing the sample is placed in the placing groove, the instrument cover is closed, the sample is placed in a sealed detection cavity, and the detection module is started to realize detection and analysis of the sample.
[0004] It should be noted that food samples usually need to be pretreated by crushing, grinding and the like before entering the detector, and specific reagents need to be added during the process. Since some reagents have strong volatility, when multiple test tubes or culture dishes are placed in the placing disc at the same time, double interference problems may occur. On the one hand, the volatilized reagents will directly contaminate the surrounding samples in parallel test, causing the composition of the samples to change. On the other hand, after multiple volatile reagents or the same reagent with different concentrations are mixed, the detection module will be interfered, the stability of the detection environment will be destroyed, and finally the accuracy of the detection result will be affected. SUMMARY
[0005] In view of the deficiencies of the prior art, the application provides a food safety comprehensive detector based on Internet of Things and a detection method thereof, which can realize efficient and high-accuracy detection.
[0006] The technical scheme adopted by the application to solve the above technical problems is that: A food safety comprehensive detector based on Internet of Things, which comprises a device main body, a detection groove is arranged on the device main body, one side of the detection groove is connected with a cover that can be opened and closed, further comprising: a placing disc located in the detection groove, a plurality of installation grooves are equidistantly arranged on the outer periphery of the placing disc; a separate bin having an opening at one end and connected in the installation groove, a sealing cover is connected to one side of the opening end of the separate bin, the number of the separate bin is consistent with the number of the installation groove, and a detection module is integrally arranged on the separate bin; a tray for carrying a culture dish or a test tube and located in the separate bin, the tray and the separate bin are not in contact; a driving assembly arranged in the separate bin for driving the tray to slide axially along the separate bin; a turnover assembly, the driving assembly drives the sealing cover to rotate by driving the turnover assembly; a clamping assembly, the clamping assembly is used for clamping and restraining the culture dish or the test tube placed on the tray, and the clamping assembly is driven to operate by the driving assembly.
[0007] Further, a controller is mounted on the separate bin, the driving assembly comprises a telescopic rod mounted on the bottom of the separate bin, a top driving frame connected with the movable end of the telescopic rod, and a guide rod connected with the bottom of the tray; wherein the telescopic rod is mounted on the outside of the separate bin, the movable end of the telescopic rod extends to the inside of the separate bin, and the movable end of the separate bin is slidingly connected with the separate bin, the guide rod is provided in plurality, the plurality of guide rods are equidistantly arranged around the circumference of the tray, and the guide rod is fixedly connected with the top driving frame.
[0008] Further, a guide groove is radially arranged on the tray, and the guide groove is provided in plurality, the guide groove penetrates the tray along the axial direction of the tray; a placing groove and a placing hole are arranged on the upper end surface of the tray along the axial direction thereof, wherein the placing hole penetrates the tray, an extension pipe is connected to the bottom of the tray along the axial direction thereof, and the diameter of the extension pipe is not less than the diameter of the placing hole.
[0009] Further, the clamping assembly comprises a clamping block slidingly connected in the guide groove, a retractable rod connected to the clamping block, and a guide plate connected to the inner side wall of the separate bin; wherein the clamping block and the retractable rod extend along the axial direction of the tray, a roller is rotatably connected to the end of the retractable rod away from the clamping block, the roller is in contact with the side surface of the guide plate close to the separate bin, an elastic pad one is connected to the side of the clamping block close to the axial line of the tray; a sliding rod is arranged on the outer side wall of the extension pipe along the radial direction thereof, the end of the sliding rod away from the extension pipe penetrates the clamping block and is slidingly connected with the clamping block, a telescopic spring is connected between the clamping block and the outer side wall of the extension pipe, and the telescopic spring is sleeved on the outside of the sliding rod.
[0010] Further, the guide plate is composed of an inclined part and a vertical part, the inclined part is located below the vertical part, one end of the inclined part is inclined from the vertical plane where the vertical part is located to the position of the independent bin axis; a through groove suitable for the through rod is formed on the guide plate along the independent bin axis.
[0011] Further, the clamping assembly further comprises a sleeve connected to the through rod, a movable rod slidingly connected to the sleeve, a compression spring connected between the sleeve and the movable rod, and an arc-shaped clamp plate connected to the end of the movable rod; wherein the side of the arc-shaped clamp plate close to the movable rod is connected with a radial rod, one end of the radial rod away from the arc-shaped clamp plate penetrates the through rod and is slidingly connected with the through rod, and the side of the arc-shaped clamp plate close to the tray axis is connected with the second elastic pad.
[0012] Further, a limiting plate is connected between the two adjacent guide plates, a limiting protrusion is connected to the limiting plate, the number of the limiting protrusions is consistent with the number of the guide rods, the guide rods penetrate the limiting protrusions and are slidingly connected with the limiting protrusions.
[0013] Further, the turnover assembly comprises a telescopic bin connected to the side wall of the independent bin, a top driving rod extending along the independent bin axis, a connecting rod rotationally connected to the end of the top driving rod, a hinged base connected to the outer wall of the independent bin, a rotating plate hinged to the hinged base, and a support plate connected to the rotating plate; wherein one end of the top driving rod penetrates the telescopic bin and extends to the outside, and the top driving rod is slidingly connected with the telescopic bin, the connecting rod away from the end of the top driving rod is rotationally connected with the end of the support plate away from the rotating plate, the rotating plate is connected with the sealing cover, the inside of the telescopic bin is connected with the inside of the independent bin, the movable end of the telescopic rod is connected with a driving rod, and one end of the driving rod away from the telescopic rod is connected with the top driving rod; a sliding groove is formed on the top driving rod along the extension direction thereof, a sliding block is connected in the telescopic bin, and the sliding block is slidingly connected with the sliding groove.
[0014] Further, the side wall of the independent bin is provided with a heat-conducting bin, a heating wire and a temperature sensor are arranged in the heat-conducting bin, and the sensing end of the temperature sensor extends into the independent bin.
[0015] A detection method of a food safety comprehensive detector based on the Internet of Things, comprising the following steps: S1: First, open the cover plate to expose the detection groove and the placement disc in the detection groove, select the independent bin to be used, and use the controller to start the telescopic rod, the movable end of the telescopic rod drives the tray to move from the inside of the independent bin to the port of the independent bin through the top driving frame and the guide rod; S2: Then the tray moves along the independent bin axis, the clamping block, the retractable rod and the roller move synchronously with the tray, when the roller moves from the inclined part of the guide plate to the vertical part, under the elastic force of the extension spring, the clamping block slides on the sliding rod to a position away from the tray axis; S3: In the process of moving the movable end of the telescopic rod, the movable end of the telescopic rod drives the ejector rod upward synchronously through the driving rod, the ejector rod drives the support plate through the connecting rod, and then drives one end of the rotating plate to perform circular motion with the hinge base as the center, the rotating plate drives the sealing cover to overturn, and gradually moves away from the port position of the independent bin, so that the port of the independent bin is opened, when the movement stroke of the movable end of the telescopic rod ends, the tray is located at the opening position of the independent bin, and the port of the independent bin is in an open state; S4: Place the petri dish or test tube containing food samples on the tray, start the telescopic rod through the controller, the movable end of the telescopic rod reverses to the initial position, and in the process, the telescopic rod movable end drives the tray to re-enter the independent bin, in the process of downward movement of the tray, the sealing cover reverses and covers the port of the independent bin again, and when the roller moves from the vertical part to the inclined part of the guide plate, the roller drives the clamping block to move to the tray axis position through the retractable rod, when the clamping blocks move synchronously, the petri dish or test tube on the tray is clamped and constrained, so that the petri dish or test tube does not shake, and the stability of the petri dish or test tube during detection is ensured; S5: Finally, start the detection module on the independent bin through the controller to detect the food samples on the tray in the independent bin, and the detection module processes the detected data information for the operator to observe and analyze.
[0016] Compared with the prior art, the present application has the following advantages: 1. By arranging the combination structure of the independent bin and the sealing cover, each sample is placed in a separate independent bin, and the sealing cover can tightly cover the port of the independent bin, which fundamentally solves the problem of mutual mixing, pollution of surrounding samples and interference of the detection module of volatile reagents in multiple samples in the traditional detection instrument, ensures that the detection environment of each sample is independent and pure, and avoids changes in sample composition and destruction of the detection environment; 2. The driving assembly synchronously drives the tray to move through the telescopic rod, the opening and closing of the sealing cover is driven by the overturning assembly, and the sample is fixed by the clamping assembly, without the need for additional power structure, the structure is simple; the whole process of tray extension, sealing cover opening, sample placement, tray resetting, sealing cover closing and sample clamping is automatically completed, which reduces the operation complexity and improves the detection efficiency; 3. The clamping assembly is equipped with clamping blocks, arc-shaped clamping plates, elastic pads, and multiple spring structures, enabling adaptive clamping of petri dishes or test tubes through mechanical linkage. The elastic pads prevent slippage or damage to the containers during clamping, while the telescopic and compression springs automatically adjust the clamping force according to the container size. This prevents samples from shaking during testing and adapts to different sizes of petri dishes and test tubes, improving the versatility of the testing instrument. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the middle section; Figure 4 For the present invention Figure 3 Cross-sectional structural diagram; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the flip component structure of the present invention; Figure 7 For the present invention Figure 3 Schematic diagram of the middle section; Figure 8 This is a schematic diagram of the drive component structure of the present invention; Figure 9 This is a schematic diagram of the clamping component structure of the present invention.
[0018] In the diagram: 1. Main body of the equipment; 2. Detection slot; 3. Cover plate; 4. Placement tray; 5. Mounting slot; 6. Independent compartment; 7. Sealing cover; 8. Tray; 9. Drive assembly; 10. Tilting assembly; 11. Clamping assembly; 12. Telescopic rod; 13. Guide rod; 14. Pushing frame; 15. Guide slot; 16. Placement slot; 17. Placement hole; 18. Extension tube; 19. Clamping block; 20. Retracting rod; 21. Guide plate; 22. Inclined part; 23. Vertical part; 24. Roller; 25. Elastic pad 1; 26. Sliding rod 27. Telescopic spring; 28. Through groove; 29. Sleeve; 30. Movable rod; 31. Compression spring; 32. Arc-shaped clamp; 33. Radial rod; 34. Elastic pad II; 35. Limiting plate; 36. Limiting protrusion; 37. Telescopic chamber; 38. Pushing rod; 39. Connecting rod; 40. Hinge base; 41. Rotating plate; 42. Support plate; 43. Driving rod; 44. Sliding groove; 45. Sliding block; 46. Heat conduction chamber; 47. Temperature sensor; 48. Heating wire; 49. Controller; 50. Drive motor. Detailed Implementation
[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0020] like Figures 1-9 As shown, the IoT-based comprehensive food safety testing instrument provided in this embodiment includes a main body 1, a testing slot 2 on the main body 1, a cover plate 3 hinged to one side of the testing slot 2, a placement tray 4, an independent compartment 6, a pallet 8, a drive assembly 9, a flipping assembly 10, and a clamping assembly 11. Specifically, the placement tray 4 is located inside the detection slot 2. Several mounting slots 5 are equidistantly spaced on the outer periphery of the placement tray 4. A drive motor 50 for rotating the placement tray 4 is located at the bottom of the placement tray 4. An independent compartment 6 has an opening at one end and is connected to the mounting slot 5. A sealing cap 7 is hinged to one side of the opening end of the independent compartment 6. The number of independent compartments 6 is the same as the number of mounting slots 5. A detection module is integrated into each independent compartment 6. A tray 8 is used to hold petri dishes or test tubes. When a test tube is placed on the tray 8, rotating the placement tray 4 centrifuges the sample inside the test tube. The tray 8 is located inside the independent compartment 6 and does not contact the independent compartment 6. The drive component 9 is located inside the independent compartment 6 and is used to drive the tray 8 to slide along the axial direction of the independent compartment 6. The flipping component 10 drives the sealing cover 7 to rotate. The clamping component 11 is used to clamp and constrain the petri dishes or test tubes placed on the tray 8. The clamping component 11 is driven by the drive component 9. When the drive component 9 is running, it can drive the flipping component 10 and the clamping component 11 to run synchronously, avoiding the need for an unnecessary power structure.
[0021] Furthermore, it also includes a controller 49 installed on the independent compartment 6, and the drive assembly 9 includes a telescopic rod 12 installed on the bottom of the independent compartment 6, a top-moving frame 14 connected to the movable end of the telescopic rod 12, and a guide rod 13 connected to the bottom of the tray 8; wherein, the telescopic rod 12 is installed on the outside of the independent compartment 6, the telescopic rod 12 is electrically connected to the controller 49, the controller 49 can control the operation of the telescopic rod 12, the movable end of the telescopic rod 12 extends into the interior of the independent compartment 6, and the movable end of the independent compartment 6 is slidably connected to the independent compartment 6, and a plurality of guide rods 13 are provided, the plurality of guide rods 13 are equidistantly arranged around the tray 8, and the guide rods 13 are fixedly connected to the top-moving frame 14.
[0022] The guiding groove 15 is radially arranged on the tray 8, and a plurality of guiding grooves 15 are arranged, and the guiding grooves 15 axially penetrate the tray 8; the placing groove 16 and the placing hole 17 are axially arranged on the upper end surface of the tray 8, and the placing hole 17 penetrates the tray 8, and the bottom of the tray 8 is axially connected with the extension pipe 18, the diameter of the extension pipe 18 is not less than the diameter of the placing hole 17, the placing hole 17 is used for placing the test tube, when the test tube is placed in the placing hole 17, the bottom of the test tube penetrates the placing hole and extends to the bottom of the tray 8, and the placing groove 16 is used for placing the culture dish.
[0023] The clamping assembly 11 comprises the clamping block 19 slidingly connected in the guiding groove 15, the retractable rod 20 connected on the clamping block 19, and the guide plate 21 connected on the inner side wall of the independent bin 6; wherein the clamping block 19 and the retractable rod 20 both axially extend along the tray 8, the one end of the retractable rod 20 away from the clamping block 19 is rotatably connected with the roller 24, the roller 24 is in contact with the side surface of the guide plate 21 close to the independent bin 6, and the side of the clamping block 19 close to the axis of the tray 8 is provided with the elastic pad 25, so as to avoid the sliding phenomenon between the clamping block 19 and the side wall of the culture dish.
[0024] The outer side wall of the extension pipe 18 is provided with the sliding rod 26 radially, the one end of the sliding rod 26 away from the extension pipe 18 penetrates the clamping block 19 and is slidingly connected with the clamping block 19, the clamping block 19 and the outer side wall of the extension pipe 18 are connected with the extension spring 27, the extension spring 27 is sleeved on the outside of the sliding rod 26, the clamping block 19 is integrated with the tray 8 through the sliding rod 26, the clamping block 19 is synchronously moved when the tray 8 is driven to move by the driving assembly 9, and under the action of the extension spring 27, the clamping block 19 is in the initial state when it is not subjected to external force.
[0025] Further, the guide plate 21 is composed of the inclined part 22 and the vertical part 23, the inclined part 22 is below the vertical part 23, and the one end of the inclined part 22 is inclined from the vertical surface where the vertical part 23 is located to the axis position of the independent bin 6; the through groove 28 suitable for the retractable rod 20 to pass through is axially arranged on the guide plate 21, and it is necessary to note that the inclined part 22 and the vertical part 23 can be designed according to actual use requirements.
[0026] The clamping assembly 11 further comprises a sleeve 29 connected to the telescopic rod 20, a movable rod 30 slidingly connected to the sleeve 29, a compression spring 31 connected between the sleeve 29 and the movable rod 30, and an arc-shaped clamping plate 32 connected to the end of the movable rod 30; wherein the side of the arc-shaped clamping plate 32 close to the movable rod 30 is connected with a radial rod 33, the end of the radial rod 33 away from the arc-shaped clamping plate 32 penetrates through the telescopic rod 20 and is slidingly connected with the telescopic rod 20, the side surface of the side of the arc-shaped clamping plate 32 close to the axis of the tray 8 is connected with a second elastic pad 34, and the sleeve 29, the movable rod 30, the compression spring 31 and the arc-shaped clamping plate 32 can be used for clamping test tubes, and the clamping assembly 11 can clamp test tubes while clamping culture dishes.
[0027] The limiting plate 35 is connected between the two adjacent guide plates 21, the limiting plate 35 is connected with a limiting protrusion 36, the number of the limiting protrusions 36 is consistent with the number of the guide rods 13, the guide rods 13 penetrate through the limiting protrusions 36 and are slidingly connected with the limiting protrusions 36.
[0028] The turnover assembly 10 comprises a telescopic bin 37 connected to the side wall of the independent bin 6, a top driving rod 38 extending along the axis of the independent bin 6, a connecting rod 39 rotationally connected to the end of the top driving rod 38, a hinged base 40 connected to the outer wall of the independent bin 6, a rotating plate 41 hinged to the hinged base 40, and a support plate 42 connected to the rotating plate 41; wherein the end of the top driving rod 38 extends to the outside through the telescopic bin 37 and is slidingly connected with the telescopic bin 37, the end of the connecting rod 39 away from the top driving rod 38 is rotationally connected with the end of the support plate 42 away from the rotating plate 41, the rotating plate 41 is connected with the sealing cover 7, the inside of the telescopic bin 37 is connected with the inside of the independent bin 6, and the movable end of the telescopic rod 12 is connected with a driving rod 43, the end of the driving rod 43 away from the telescopic rod 12 is connected with the top driving rod 38. The top driving rod 38 is provided with a sliding groove 44 along the extending direction thereof, and the telescopic bin 37 is connected with a sliding block 45, the sliding block 45 is slidingly connected with the sliding groove 44.
[0029] In order to ensure the temperature inside the independent bin 6, a heat conduction bin 46 is arranged on the side wall of the independent bin 6, a heating wire 48 and a temperature sensor 47 are arranged in the heat conduction bin 46, the sensing end of the temperature sensor 47 extends into the independent bin 6, when the temperature inside the independent bin 6 needs to be raised, the heating wire 48 is started by the controller 49, the heat generated by the heating wire 48 enters the independent bin 6 through the heat conduction bin 46, the temperature inside the independent bin 6 is raised, the temperature sensor 47 can detect the temperature value inside the independent bin 6 in real time, and the data is transmitted to the controller 49 in real time, the controller 49 adjusts the output power of the heating wire 48 according to the temperature threshold set in advance, and accurately controls the temperature value inside the independent bin 6. The temperature environment of the independent bin 6 and the independent bin 6 is independent and does not interfere with each other, when the required detection temperatures of different food samples are different, the independent bin 6 can meet the requirements of the food sample detection temperature inside it.
[0030] The device is used, first open the cover 3 to expose the detection groove 2 and the placement tray 4 in the detection groove 2, select the independent bin 6 to be used, use the controller 49 to start the telescopic rod 12, the movable end of the telescopic rod 12 drives the tray 8 from the inside of the independent bin 6 to the port of the independent bin 6 through the jacking frame 14 and the guide rod 13; when the tray 8 moves along the axis of the independent bin 6, the clamping block 19, the retractable rod 20 and the roller 24 move synchronously with the tray 8, when the roller 24 moves from the inclined part 22 of the guide plate 21 to the vertical part 23, under the elastic pushing of the telescopic spring 27, the clamping block 19 slides on the sliding rod 26 to a position away from the axis of the tray 8; in the process of movement of the movable end of the telescopic rod 12, the movable end of the telescopic rod 12 drives the jacking rod 38 to move upwards synchronously through the driving rod 43, the jacking rod 38 pushes the branch plate 42 through the link rod 39, and then pushes one end of the rotating plate 41 to move in a circle with the hinged base 40 as the center, the rotating plate 41 drives the sealing cover 7 to overturn and gradually move away from the port position of the independent bin 6, so that the port of the independent bin 6 is opened; when the movement stroke of the movable end of the telescopic rod 12 ends, at this time, the tray 8 is located at the opening position of the independent bin 6, and the port of the independent bin 6 is in an open state; place the petri dish or test tube containing food samples on the tray 8, start the telescopic rod 12 through the controller 49, and the movable end of the telescopic rod 12 moves reversely to return to the initial position, while in the process, the movable end of the telescopic rod 12 drives the tray 8 to re-enter the inside of the independent bin 6, in the process of downward movement of the tray 8, the sealing cover 7 rotates reversely and re-covers the port of the independent bin 6, while the roller 24 moves from the vertical part 23 to the inclined part 22 of the guide plate 21, the roller 24 drives the clamping block 19 to move to the axis position of the tray 8 through the retractable rod 20, when the plurality of clamping blocks 19 move synchronously, the petri dish or test tube on the tray 8 is clamped and constrained, avoiding shaking of the petri dish or test tube, and ensuring the stability of the petri dish or test tube during detection; finally, start the detection module on the independent bin 6 through the controller 49 to detect the food samples on the tray 8 in the independent bin 6, and the detection module processes the detected data information for the operator to observe and analyze.
[0031] The above description shows and describes the preferred embodiments of the present application, but it should be understood that the present application is not limited to the forms disclosed herein, and modifications and changes made by those skilled in the art without departing from the spirit and scope of the present application should be within the protection scope of the appended claims of the present application.
Claims
1. A comprehensive food safety testing instrument based on the Internet of Things, comprising a main body (1), wherein the main body (1) is provided with a testing slot (2), and one side of the testing slot (2) is connected to an openable and closable cover plate (3), characterized in that, Also includes: The placement plate (4) is located inside the detection groove (2), and a plurality of installation grooves (5) are equally spaced on the outer periphery of the placement plate (4); An independent compartment (6) has an opening at one end and is connected to the mounting slot (5). A sealing cap (7) is connected to one side of the opening end of the independent compartment (6). The number of independent compartments (6) is the same as the number of mounting slots (5). A detection module is integrated on the independent compartment (6). A tray (8) is used to hold petri dishes or test tubes and is located inside the independent compartment (6). The tray (8) and the independent compartment (6) are not in contact. A drive assembly (9) is disposed within the independent compartment (6) and is used to drive the pallet (8) to slide along the axial direction of the independent compartment (6); The flipping assembly (10) drives the sealing cover (7) to rotate by driving the flipping assembly (10); Clamping assembly (11) is used to clamp and constrain a petri dish or test tube placed on a tray (8), and the clamping assembly (11) is driven by a driving assembly (9).
2. The detector according to claim 1, characterized in that: It also includes a controller (49) installed on the independent compartment (6), the drive assembly (9) including a telescopic rod (12) installed on the bottom of the independent compartment (6), a top-moving frame (14) connected to the movable end of the telescopic rod (12), and a guide rod (13) connected to the bottom of the tray (8); wherein, the telescopic rod (12) is installed on the outside of the independent compartment (6), the movable end of the telescopic rod (12) extends into the interior of the independent compartment (6), and the movable end of the independent compartment (6) is slidably connected to the independent compartment (6), the guide rod (13) is set in a plurality of them, the plurality of guide rods (13) are equidistantly arranged around the tray (8), and the guide rod (13) is fixedly connected to the top-moving frame (14).
3. The detector according to claim 2, characterized in that: The tray (8) has a plurality of guide grooves (15) radially provided, and the guide grooves (15) are provided through the tray (8) axially; the upper end surface of the tray (8) has a placement groove (16) and a placement hole (17) along its axial direction; wherein, the placement hole (17) penetrates the tray (8), and the bottom of the tray (8) is connected to an extension tube (18) along its axial direction, and the diameter of the extension tube (18) is not less than the diameter of the placement hole (17).
4. The detector according to claim 3, characterized in that: The clamping assembly (11) includes a clamping block (19) slidably connected in a guide groove (15), a retractable rod (20) connected to the clamping block (19), and a guide plate (21) connected to the inner side wall of the independent compartment (6); wherein the clamping block (19) and the retractable rod (20) both extend along the axial direction of the pallet (8), and a roller (24) is rotatably connected to the end of the retractable rod (20) away from the clamping block (19), the roller (24) is in contact with the side of the guide plate (21) near the independent compartment (6), and an elastic pad (25) is connected to the side of the clamping block (19) near the axis of the pallet (8). A sliding rod (26) is provided radially on the outer side wall of the extension tube (18). The end of the sliding rod (26) away from the extension tube (18) passes through the clamping block (19) and is slidably connected to the clamping block (19). A telescopic spring (27) is connected between the clamping block (19) and the outer side wall of the extension tube (18). The telescopic spring (27) is sleeved on the outside of the sliding rod (26).
5. The detector according to claim 4, characterized in that: The guide plate (21) is composed of an inclined part (22) and a vertical part (23). The inclined part (22) is located below the vertical part (23). One end of the inclined part (22) is inclined from the vertical surface where the vertical part (23) is located to the axis of the independent compartment (6). A passage groove (28) suitable for the retractable rod (20) to pass through is provided on the guide plate (21) along the axial direction of the independent compartment (6).
6. The detector according to claim 4, characterized in that: The clamping assembly (11) further includes a sleeve (29) connected to the take-up rod (20), a movable rod (30) slidably connected to the sleeve (29), a compression spring (31) connected between the sleeve (29) and the movable rod (30), and an arc-shaped clamping plate (32) connected to the end of the movable rod (30); wherein, a radial rod (33) is connected to the side of the arc-shaped clamping plate (32) near the movable rod (30), the end of the radial rod (33) away from the arc-shaped clamping plate (32) passes through the take-up rod (20) and is slidably connected to the take-up rod (20), and an elastic pad (34) is connected to the side of the arc-shaped clamping plate (32) near the axis of the tray (8).
7. The detector according to claim 4, characterized in that: A limiting plate (35) is connected between two adjacent guide plates (21). A limiting protrusion (36) is connected on the limiting plate (35). The number of the limiting protrusions (36) is the same as the number of the guide rods (13). The guide rods (13) pass through the limiting protrusions (36) and are slidably connected to the limiting protrusions (36).
8. The detector according to claim 2, characterized in that: The flipping assembly (10) includes a telescopic compartment (37) connected to the side wall of the independent compartment (6), a jacking rod (38) extending axially along the independent compartment (6), a connecting rod (39) rotatably connected to the end of the jacking rod (38), a hinged base (40) connected to the outer wall of the independent compartment (6), a rotating plate (41) hinged to the hinged base (40), and a support plate (42) connected to the rotating plate (41); wherein, one end of the jacking rod (38) extends through the telescopic compartment (37) to the outside, and the The jacking rod (38) is slidably connected to the telescopic chamber (37). The end of the connecting rod (39) away from the jacking rod (38) is rotatably connected to the end of the support plate (42) away from the rotating plate (41). The rotating plate (41) is connected to the sealing cover (7). The interior of the telescopic chamber (37) is connected to the interior of the independent chamber (6). The movable end of the telescopic rod (12) is connected to the driving rod (43). The end of the driving rod (43) away from the telescopic rod (12) is connected to the jacking rod (38). The jacking rod (38) has a sliding groove (44) along its extension direction, and a sliding block (45) is connected inside the telescopic chamber (37). The sliding block (45) and the sliding groove (44) are slidably connected.
9. The detector according to claim 1, characterized in that: The independent compartment (6) has a heat-conducting compartment (46) on its side wall. The heat-conducting compartment (46) is equipped with a heating wire (48) and a temperature sensor (47). The sensing end of the temperature sensor (47) extends into the independent compartment (6).
10. The detection method of the IoT-based comprehensive food safety testing instrument as described in claims 1-9, characterized in that, Includes the following steps: S1: Open the cover plate (3) to expose the detection slot (2) and the placement tray (4) located in the detection slot (2). Select the independent compartment (6) to be used. Use the controller (49) to start the telescopic rod (12). The movable end of the telescopic rod (12) drives the tray (8) to move from the inside of the independent compartment (6) to the port of the independent compartment (6) through the top moving frame (14) and the guide rod (13). S2: When the pallet (8) moves along the axis of the independent compartment (6), the clamping block (19), the retracting rod (20) and the roller (24) move synchronously with the pallet (8). When the roller (24) moves from the inclined part (22) of the guide plate (21) to the vertical part (23), under the push of the elastic force of the telescopic spring (27), the clamping block (19) slides on the sliding rod (26) to a position away from the axis of the pallet (8). S3: During the movement of the movable end of the telescopic rod (12), the movable end of the telescopic rod (12) drives the push rod (38) to move upward synchronously through the drive rod (43). The push rod (38) pushes the support plate (42) through the connecting rod (39), which in turn pushes one end of the rotating plate (41) to move in a circle around the hinged base (40). The rotating plate (41) drives the sealing cover (7) to flip and gradually move away from the port position of the independent compartment (6), so that the port of the independent compartment (6) opens. When the movement of the movable end of the telescopic rod (12) ends, the tray (8) is located at the opening position of the independent compartment (6), and the port of the independent compartment (6) is in the open state. S4: Place the petri dish or test tube containing the food sample onto the tray (8), and start the telescopic rod (12) through the controller (49). The movable end of the telescopic rod (12) moves in the opposite direction to return to the initial position. During this process, the movable end of the telescopic rod (12) will drive the tray (8) to re-enter the independent compartment (6). During the downward movement of the tray (8), the sealing cover (7) rotates in the opposite direction and covers the port of the independent compartment (6) again. When the roller (24) moves from the vertical part (23) of the guide plate (21) to the inclined part (22), the roller (24) drives the clamping block (19) to move towards the axis of the tray (8) through the retracting rod (20). When several clamping blocks (19) move synchronously, they clamp and constrain the petri dish or test tube located on the tray (8). S5: The detection module on the independent compartment (6) is started by the controller (49) to detect the food samples on the tray (8) inside the independent compartment (6). The detection module will process the detected data.