A sampling device and method for virus detection

Abstract

The present invention discloses a sampling device for virus detection, specifically relates to the technical field of virus sampling, including a vehicle seat, the top of which is respectively provided with a central processing unit and a first cylinder, the output shaft of the first cylinder is connected to a first telescopic rod in a transmission manner, the top of the first telescopic rod is fixedly connected with a load-bearing plate, the top of the load-bearing plate is respectively provided with a box and a marking mechanism, the marking mechanism includes a clamping arm and an electromagnet plate, the interior of the box is provided with a paper changing mechanism, the paper changing mechanism is used to replace the sampling test paper, the outer wall of the box is provided with a closing mechanism, the closing mechanism is used to isolate the sampling influence of the external air on the sampling test paper, the marking mechanism is used to mark the sampling test paper; and also includes a relative distance acquisition module and a motion speed acquisition module. The present invention can easily realize the collection of virus content in different areas of the air, and improves the efficiency, accuracy and convenience of air virus content detection.

Description

Technical Field

[0001] The present invention relates to the technical field of virus sampling, and more specifically, to a sampling device and method for virus detection. Background Art

[0002] Viruses are a type of microorganism that can cause a variety of diseases. The importance of sampling in virus detection cannot be ignored, especially the collection of virus content in the air. Sampling is the process of obtaining samples for laboratory analysis. In virus detection, sampling directly affects the accuracy and reliability of the test results. The collection of virus content in the air can help researchers understand the distribution and spread of viruses in the environment, and provide an important basis for formulating effective prevention and control strategies. In addition, early collection of air samples helps monitor potential virus transmission risks. Therefore, accurate and effective sampling plays a key role in virus detection and is of great significance for timely detection, control and blocking of virus transmission. Existing sampling devices for virus detection still have some shortcomings in use.

[0003] The existing technology has the following deficiencies: when the existing sampling device for virus detection collects the virus content in different areas of the air, it is often necessary to manually raise and lower the sampling part to facilitate manual replacement of the sampling test paper. This method is not only time-consuming and labor-intensive, but also has poor sampling efficiency. At the same time, it cannot guarantee that the sampling results will not be affected when the sampling test paper is replaced. In addition, during the lifting and lowering process, the sampling part may move to other detection areas. The virus content or other components in the air in other areas may interfere with the sampling results, seriously reducing the accuracy of the sampling results.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a sampling device and method for virus detection to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A sampling device for virus detection, comprising a seat, a central processing unit and a first cylinder are respectively arranged on the top of the seat, an output shaft of the first cylinder is drivingly connected to a first telescopic rod, a load-bearing plate is fixedly connected to the top of the first telescopic rod, a box and a marking mechanism are respectively arranged on the top of the load-bearing plate, the marking mechanism comprises a clamping arm and an electromagnet plate, a paper changing mechanism is arranged inside the box, the paper changing mechanism is used to replace a sampling test paper, a closing mechanism is arranged on the outer wall of the box, the closing mechanism is used to isolate the sampling influence of the sampling test paper from the outside air, and the marking mechanism is used to mark the sampling test paper;

[0008] Also includes:

[0009] The relative distance acquisition module is arranged on the inner top wall of the clamp arm, and is used to obtain the actual relative distance between the electromagnet plate and the inner wall of the clamp arm in real time, and generate a relative distance mutation coefficient through the central processing unit;

[0010] The motion speed acquisition module is arranged on the inner wall of the box body, and is used to obtain the actual motion speed of the sampling test paper when the paper changing mechanism changes the sampling test paper in real time, and generate a motion speed stability index through the central processor;

[0011] The central processing unit performs a comprehensive analysis on the generated relative distance mutation coefficient and movement speed stability index to generate an evaluation coefficient. The evaluation coefficient is compared with a preset evaluation coefficient reference threshold to determine whether the marking work of the marking mechanism on the sampling test paper is completed, and the working state of the marking mechanism is controlled according to the comparison result.

[0012] Preferably, the paper changing mechanism includes a first motor fixing frame, a first motor, a rotating shaft, a fixed shaft, a collecting roller, a test paper placing roller and a diaphragm placing roller. The inner wall of the first motor fixing frame is fixedly connected to the outer wall of the first motor, the output shaft of the first motor is transmission connected to one end of the rotating shaft, the outer wall of the rotating shaft is transmission connected to the inner wall of the collecting roller, the outer wall of the fixed shaft and the inner wall of the test paper placing roller and the inner wall of the diaphragm placing roller are movably connected through bearings, and the bottom of the fixed shaft is fixedly connected to the top of the load-bearing plate.

[0013] Preferably, the closing mechanism includes a second cylinder support frame, a second cylinder, a second telescopic rod, a sealing plate, a sealing plate slide rail and a top plate, one side of the second cylinder support frame is fixedly connected to the outer wall of the box body, the top of the second cylinder support frame is fixedly connected to the bottom of the second cylinder, the output shaft of the second cylinder is transmission-connected to one end of the second telescopic rod, the other end of the second telescopic rod is fixedly connected to one side of the sealing plate, the outer wall of the sealing plate is slidingly connected to the inner wall of the sealing plate slide rail, one side of the sealing plate slide rail is fixedly connected to the bottom of the top plate and the top of the load-bearing plate, and the side wall of the top plate is fixedly connected to the outer wall of the box body.

[0014] Preferably, the marking mechanism also includes a second motor fixing frame, a second motor, a double-threaded screw, a slider, a slide rail, a third cylinder support frame, a third cylinder, a third telescopic rod, a spring, a telescopic rod and a printing plate, the inner wall of the second motor fixing frame is fixedly connected to the outer wall of the second motor, the output shaft of the second motor is transmission-connected to one end of the double-threaded screw, the outer wall of the double-threaded screw is transmission-connected to the inner side wall of the slider, the outer wall of the slider is slidably connected to the inner side wall of the slide rail, one side of the slider is fixedly connected to one side of the third cylinder support frame, the top of the third cylinder support frame is fixedly connected to the bottom of the third cylinder, the output shaft of the third cylinder is transmission-connected to one end of the third telescopic rod, the other end of the third telescopic rod is fixedly connected to one side of the clamp arm, the inner side wall of the clamp arm is respectively fixedly connected to one end of the spring and one end of the telescopic rod, the other end of the spring and the other end of the telescopic rod are both fixedly connected to one side of the electromagnet plate, and the other side of the electromagnet plate is fixedly connected to one side of the printing plate.

[0015] Preferably, the output end of the central processing unit is electrically connected to the input end of the first cylinder, the input end of the first motor, the input end of the second cylinder, the input end of the second motor, the input end of the third cylinder and the input end of the electromagnet plate, respectively, and the output end and input end of the relative distance acquisition module and the output end and input end of the motion speed acquisition module are electrically connected to the input end and output end of the central processing unit, respectively.

[0016] Preferably, the logic for obtaining the relative distance mutation coefficient is:

[0017] S1. The actual relative distance between the electromagnetic plate and the inner wall of the clamp arm at different times within the time T is obtained through the relative distance acquisition module, and the preset relative distance between the electromagnetic plate and the inner wall of the clamp arm at different times within the time T is obtained through the central processor, and the preset relative distance between the electromagnetic plate and the inner wall of the clamp arm at different times within the time T and the actual relative distance between the electromagnetic plate and the inner wall of the clamp arm are calibrated as and , Indicates the actual relative distance and the preset relative distance between the electromagnet plate and the inner wall of the clamp arm at different times within the time T. , is a positive integer;

[0018] S2. Calculate the relative distance mutation coefficient. The calculation expression is:

[0019] , where is the relative distance mutation coefficient.

[0020] Preferably, the acquisition logic of the motion speed stability index is:

[0021] S1. The actual movement speed of the sampling test paper when the paper changing mechanism changes the sampling test paper at different times within the time T is obtained through the movement speed acquisition module, and the actual movement speed of the sampling test paper when the paper changing mechanism changes the sampling test paper at different times within the time T is calibrated as , The number indicating the actual movement speed of the sampling test paper when the paper changing mechanism changes the sampling test paper at different times within the time T. , is a positive integer;

[0022] S2. Calculate the motion speed stability index. The calculation expression is:

[0023] , where It is the movement speed stability index.

[0024] Preferably, the evaluation coefficient is expressed as:

[0025] Formula analysis is performed through the central processing unit according to the formula:

[0026]

[0027] In the formula, is the evaluation coefficient, and are the preset proportional coefficients of the relative distance mutation coefficient and the motion speed stability index, respectively, and and Both are greater than 0.

[0028] Preferably, the preset evaluation coefficient reference threshold is set to ,in , the central processor calculates the evaluation coefficient and the pre-set reference threshold of the evaluation coefficient Compare and judge whether the marking work of the marking mechanism on the sampling test paper is completed, and control the working state of the marking mechanism according to the comparison result. The specific judgment is as follows:

[0029] when When the marking mechanism has not completed the marking work of the sampling test paper, a hidden danger signal is generated. After receiving the hidden danger signal, the central processing unit generates a holding signal and transmits the holding signal to the second motor, the third cylinder and the electromagnetic plate respectively. After receiving the holding signal, the second motor, the third cylinder and the electromagnetic plate control the marking mechanism to perform the holding work;

[0030] when When the marking mechanism completes the marking work on the sampling test paper and generates an end signal, the central processing unit generates a reset signal after receiving the end signal, and transmits the reset signal to the second motor, the third cylinder and the electromagnet plate respectively. After the second motor, the third cylinder and the electromagnet plate receive the reset signal, they control the marking mechanism to perform the reset work.

[0031] A method for a virus detection sampling device, comprising the following steps:

[0032] Step 1, the central processing unit receives the input command signal, analyzes the received command signal, generates a working signal and a collection signal, and transmits the working signal to the first cylinder, the first motor, the second cylinder, the second motor, the third cylinder and the electromagnet plate respectively. After receiving the working signal, the first cylinder, the first motor, the second cylinder, the second motor, the third cylinder and the electromagnet plate respectively control the paper changing mechanism, the sealing mechanism and the marking mechanism to work, and transmit the collection signal to the relative distance collection module and the motion speed collection module respectively. After receiving the collection signal, the relative distance collection module and the motion speed collection module respectively collect information on the actual relative distance between the electromagnet plate and the inner wall of the clamping arm and the actual movement speed of the sampling test paper when the paper changing mechanism replaces the sampling test paper, and transmit the collected information to the central processing unit;

[0033] Step 2: After receiving the information collected by the relative distance acquisition module and the motion speed acquisition module, the central processing unit analyzes them respectively and generates a relative distance mutation coefficient and a motion speed stability index. The central processing unit performs a comprehensive analysis on the generated relative distance mutation coefficient and the motion speed stability index to generate an evaluation coefficient. By comparing the evaluation coefficient with a preset evaluation coefficient reference threshold, it is determined whether the marking work of the marking mechanism on the sampling test paper is completed, and the working state of the marking mechanism is controlled according to the comparison result;

[0034] Step three, if the evaluation coefficient is less than the preset evaluation coefficient threshold, the marking mechanism has not completed the marking work of the sampling test paper, and a hidden danger signal is generated. After the central processing unit receives the hidden danger signal, it generates a hold signal, and transmits the hold signal to the second motor, the third cylinder and the electromagnet plate respectively. After the second motor, the third cylinder and the electromagnet plate receive the hold signal, they control the marking mechanism to perform the hold work; if the evaluation coefficient is not less than the preset evaluation coefficient threshold, the marking mechanism has completed the marking work of the sampling test paper, and an end signal is generated. After the central processing unit receives the end signal, it generates a reset signal, and transmits the reset signal to the second motor, the third cylinder and the electromagnet plate respectively. After the second motor, the third cylinder and the electromagnet plate receive the reset signal, they control the marking mechanism to reset.

[0035] Technical effects and advantages of the present invention:

[0036] 1. The present invention controls the replacement of the sampling test paper through the first cylinder and paper changing mechanism, and controls the replacement of the sampling test paper through the first motor in the paper changing mechanism, and the diaphragm placement roller is set, which not only avoids frequent lifting operations and greatly improves the sampling efficiency, but also does not require manual intervention by the staff, saving time and operating costs, and preventing the sampling test papers from contacting each other and causing inaccurate sampling results, thereby improving the accuracy of sampling. Through the provided closing mechanism, when it is necessary to sample the virus content in the air of different areas, the device can be closed during the movement process to ensure that the virus content or other components in the air of other areas cause minimal interference to the sampling results, and to ensure that the influence of the external environment during the sampling process is minimized, which helps to improve the accuracy and consistency of the sampling results. Through the provided marking mechanism, not only can the time period of the test paper rotation controlled by the motor be clearly marked, so that the staff can easily distinguish each sampling time period, which is convenient for subsequent data analysis and result interpretation, but also it is convenient for the staff to distinguish the sampling results of different areas in the sampling test paper, thereby improving the use value of the device.

[0037] 2. The present invention can obtain in real time the actual relative distance between the electromagnet plate and the inner wall of the clamp arm and the actual movement speed of the sampling test paper when the paper changing mechanism replaces the sampling test paper through the relative distance acquisition module and the movement speed acquisition module, and can determine whether the marking work of the sampling test paper by the marking mechanism is completed through the central processing unit through comprehensive analysis, and control the working state of the marking mechanism according to the comparison result, so as to ensure the accuracy of the sampling result and the normal collection of the sampling test paper, thereby improving the intelligence of the device and further improving the use value of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0039] Figure 1 This is a schematic diagram of the three-dimensional structure of a sampling device for virus detection proposed by the present invention;

[0040] Figure 2 This is a schematic diagram of the front structure of a sampling device for virus detection proposed by the present invention;

[0041] Figure 3 This is a schematic diagram of the top structure of a sampling device for virus detection proposed by the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of a sealing mechanism of a sampling device for virus detection proposed by the present invention;

[0043] Figure 5 This is a schematic diagram of the installation structure of a load-bearing plate, a box body, a paper changing mechanism and a marking mechanism of a sampling device for virus detection proposed by the present invention;

[0044] Figure 6 This is a schematic diagram of the structure of a paper changing mechanism of a sampling device for virus detection proposed by the present invention;

[0045] Figure 7 This is a schematic diagram of the structure of a marking mechanism of a sampling device for virus detection proposed by the present invention;

[0046] Figure 8 A schematic diagram of the internal structure of a clamp arm of a sampling device for virus detection proposed by the present invention;

[0047] Fig. 9 This is a module schematic diagram of a sampling device and method for virus detection proposed by the present invention.

[0048] In the figure: 1, vehicle seat; 2, central processing unit; 3, first cylinder; 4, first telescopic rod; 5, load-bearing plate; 6, box; 7, paper changing mechanism; 7001, first motor fixing frame; 7002, first motor; 7003, transfer shaft; 7004, fixing shaft; 7005, collecting roller; 7006, test paper placement roller; 7007, diaphragm placement roller; 8, closing mechanism; 8001, second cylinder support frame; 8002, second cylinder; 8003, second telescopic rod; 8004, sealing plate; 800 5. Sealing plate slide rail; 8006. Top plate; 9. Marking mechanism; 9001. Second motor fixing bracket; 9002. Second motor; 9003. Double-threaded screw rod; 9004. Sliding block; 9005. Slide rail; 9006. Third cylinder support bracket; 9007. Third cylinder; 9008. Third telescopic rod; 9009. Clamp arm; 9010. Spring; 9011. Telescopic rod; 9012. Electromagnetic plate; 9013. Printing plate; 10. Relative distance acquisition module; 11. Movement speed acquisition module. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example

[0051] like Figure 1-9As shown, a sampling device for virus detection includes a seat 1, a central processing unit 2 and a first cylinder 3 are respectively arranged on the top of the seat 1, the output shaft of the first cylinder 3 is drivingly connected to a first telescopic rod 4, the top of the first telescopic rod 4 is fixedly connected to a load-bearing plate 5, a box 6 and a marking mechanism 9 are respectively arranged on the top of the load-bearing plate 5, the marking mechanism 9 includes a clamping arm 9009 and an electromagnet plate 9012, a paper changing mechanism 7 is arranged inside the box 6, the paper changing mechanism 7 is used to replace the sampling test paper, the outer wall of the box 6 is provided with a closing mechanism 8, the closing mechanism 8 is used to isolate the sampling influence of the external air on the sampling test paper, and the marking mechanism 9 is used to mark the sampling test paper;

[0052] Also includes:

[0053] The relative distance acquisition module 10 is arranged on the inner top wall of the clamp arm 9009, and is used to obtain the actual relative distance between the electromagnet plate 9012 and the inner wall of the clamp arm 9009 in real time, and generate a relative distance mutation coefficient through the central processor 2;

[0054] It should be noted that the relative distance acquisition module 10 may be a displacement sensor or other device capable of acquiring the actual relative distance between the electromagnet plate 9012 and the inner wall of the clamp arm 9009 in real time. The relative distance acquisition module 10 is not specifically limited here and may be selected according to actual needs.

[0055] The motion speed acquisition module 11 is arranged on the inner wall of the box body 6, and is used to obtain the actual motion speed of the sampling test paper when the paper changing mechanism 7 changes the sampling test paper in real time, and generate a motion speed stability index through the central processor 2;

[0056] It should be noted that the motion speed acquisition module 11 may be a photoelectric sensor or other device capable of obtaining in real time the actual motion speed of the sampling test paper when the paper changing mechanism 7 replaces the sampling test paper. The motion speed acquisition module 11 is not specifically limited here and may be selected according to actual needs.

[0057] The central processing unit 2 performs a comprehensive analysis on the generated relative distance mutation coefficient and movement speed stability index to generate an evaluation coefficient. The evaluation coefficient is compared with a preset evaluation coefficient reference threshold to determine whether the marking work of the marking mechanism 9 on the sampling test paper is completed, and the working state of the marking mechanism 9 is controlled according to the comparison result.

[0058] In this embodiment, the paper changing mechanism 7 includes a first motor fixing frame 7001, a first motor 7002, a rotating shaft 7003, a fixed shaft 7004, a collecting roller 7005, a test paper placement roller 7006 and a diaphragm placement roller 7007. The inner wall of the first motor fixing frame 7001 is fixedly connected to the outer wall of the first motor 7002, the output shaft of the first motor 7002 is transmission-connected to one end of the rotating shaft 7003, the outer wall of the rotating shaft 7003 is transmission-connected to the inner wall of the collecting roller 7005, the outer wall of the fixed shaft 7004 is movably connected to the inner wall of the test paper placement roller 7006 and the inner wall of the diaphragm placement roller 7007 through bearings, and the bottom of the fixed shaft 7004 is fixedly connected to the top of the load-bearing plate 5;

[0059] It should be noted that the test paper placement roller 7006 is mainly used to place the sampling test paper, the diaphragm placement roller 7007 is mainly used to place the diaphragm, and the collection roller 7005 is mainly used to collect the sampling test paper and the diaphragm. In the present invention, the diaphragm is mainly used to isolate the sampling test paper to prevent the sampling test paper from contacting with each other and causing inaccurate sampling results, thereby improving the accuracy of sampling;

[0060] In the paper changing mechanism 7, the first motor 7002 controls the rotation of the rotating shaft 7003, and then controls the collection roller 7005 to rotate. Since the outer wall of the fixed shaft 7004 and the inner wall of the test paper placement roller 7006 and the inner wall of the diaphragm placement roller 7007 are all movably connected through bearings, the bottom of the fixed shaft 7004 is fixedly connected to the top of the load-bearing plate 5, which can drive the test paper placement roller 7006 and the diaphragm placement roller 7007 to rotate, thereby realizing the paper changing of the sampling test paper. This method not only avoids frequent lifting operations, greatly improves the sampling efficiency, and the staff does not need to manually intervene, saving time and operating costs, but also prevents the sampling test papers from contacting each other and causing inaccurate sampling results, thereby improving the accuracy of sampling.

[0061] In this embodiment, the closing mechanism 8 includes a second cylinder support frame 8001, a second cylinder 8002, a second telescopic rod 8003, a sealing plate 8004, a sealing plate slide rail 8005 and a top plate 8006, one side of the second cylinder support frame 8001 is fixedly connected to the outer wall of the box body 6, the top of the second cylinder support frame 8001 is fixedly connected to the bottom of the second cylinder 8002, the output shaft of the second cylinder 8002 is transmission-connected to one end of the second telescopic rod 8003, the other end of the second telescopic rod 8003 is fixedly connected to one side of the sealing plate 8004, the outer wall of the sealing plate 8004 is slidingly connected to the inner wall of the sealing plate slide rail 8005, one side of the sealing plate slide rail 8005 is fixedly connected to the bottom of the top plate 8006 and the top of the load-bearing plate 5, and the side wall of the top plate 8006 is fixedly connected to the outer wall of the box body 6;

[0062] It should be noted that the number of the second cylinder 8002, the second telescopic rod 8003, the sealing plate 8004 and the sealing plate slide rail 8005 is set to four, and every two second cylinders 8002, every two second telescopic rods 8003, every two sealing plates 8004 and every two sealing plate slide rails 8005 form a group, and every two groups of second cylinders 8002, second telescopic rods 8003, sealing plates 8004 and sealing plate slide rails 8005 are symmetrically arranged with the mid-vertical line of the box body 6 as the symmetry axis, and the top plate 8006 is arranged on the outer wall of the box body 6. This method can fully isolate the sampling influence of the sampling test paper from the external air;

[0063] In the sealing mechanism 8, the second telescopic rod 8003 is controlled to be extended and retracted by the second cylinder 8002, and then the sealing plate 8004 can be controlled to slide on the sealing plate slide rail 8005, so as to isolate the sampling influence of the sampling test paper from the outside air. In this way, when it is necessary to sample the virus content in the air of different areas, the device can be sealed during the movement to ensure that the virus content or other components in the air of other areas will cause minimal interference to the sampling results, and ensure that the influence of the external environment during the sampling process is minimized, which helps to improve the accuracy and consistency of the sampling results.

[0064] In this embodiment, the marking mechanism 9 also includes a second motor fixing frame 9001, a second motor 9002, a double-threaded screw 9003, a slider 9004, a slide rail 9005, a third cylinder support frame 9006, a third cylinder 9007, a third telescopic rod 9008, a spring 9010, a telescopic rod 9011 and a printing plate 9013. The inner wall of the second motor fixing frame 9001 is fixedly connected to the outer wall of the second motor 9002, the output shaft of the second motor 9002 is transmission-connected to one end of the double-threaded screw 9003, the outer wall of the double-threaded screw 9003 is transmission-connected to the inner wall of the slider 9004, and the outer wall of the slider 9004 is slidingly connected to the inner wall of the slide rail 9005. Then, one side of the slider 9004 is fixedly connected to one side of the third cylinder support frame 9006, the top of the third cylinder support frame 9006 is fixedly connected to the bottom of the third cylinder 9007, the output shaft of the third cylinder 9007 is transmission-connected to one end of the third telescopic rod 9008, the other end of the third telescopic rod 9008 is fixedly connected to one side of the clamping arm 9009, the inner side wall of the clamping arm 9009 is fixedly connected to one end of the spring 9010 and one end of the telescopic rod 9011 respectively, the other end of the spring 9010 and the other end of the telescopic rod 9011 are both fixedly connected to one side of the electromagnet plate 9012, and the other side of the electromagnet plate 9012 is fixedly connected to one side of the printing plate 9013;

[0065] It should be noted that the number of sliders 9004, slide rails 9005, third cylinder support frames 9006, third cylinders 9007, third telescopic rods 9008 and clamping arms 9009 is set to two, the number of springs 9010 and telescopic rods 9011 is set to eight, the number of electromagnet plates 9012 and printing plates 9013 is set to four, and each slider 9004, each slide rail 9005, each third cylinder support frame 9006, each third cylinder 9007, each third telescopic rod 9008, each clamping arm 9009, every four springs 9010, every four telescopic rods 9011, every two electromagnet plates 9012 and every two printing plates 9013 form a group, and two groups of sliders 9004, slide rails 9005, third cylinder support frames 9006, third cylinders 9007, third telescopic rods 9008, clamping arms .... The support frame 9006, the third cylinder 9007, the third telescopic rod 9008, the clamp arm 9009, the spring 9010, the telescopic rod 9011, the electromagnet plate 9012 and the printing plate 9013 are symmetrically arranged with the midline of the double-threaded screw 9003 as the symmetry axis. At the same time, inside each clamp arm 9009, every two springs 9010, every two telescopic rods 9011, each electromagnet plate 9012 and each printing plate 9013 are a group, and every two groups of springs 9010, telescopic rods 9011, electromagnet plates 9012 and printing plates 9013 are symmetrically arranged with the midline of the clamp arm 9009 as the symmetry axis. This method can achieve a good marking effect, which is convenient for the staff to distinguish the sampling area of ​​the sampling test paper, and improves the practicality of the device;

[0066] In the marking mechanism 9, the double-threaded screw 9003 is controlled to rotate by the second motor 9002, thereby controlling the slider 9004 to slide on the inner wall of the slide rail 9005, thereby controlling the third cylinder 9007 to rise and fall, and the third telescopic rod 9008 is controlled to be telescoped by the third cylinder 9007, thereby controlling the clamp arm 9009 to move to the position where the sampling test paper is located, that is, the mid-vertical line of the clamp arm 9009 is in the vertical plane where the sampling test paper is located, and then the clamp arm 9009 is controlled by the second motor 9002 to move to the marking position, that is, the position where the printing plate 9013 can mark the sampling test paper, and then the electromagnet plate 90 12 is powered on, and the electromagnet plates 9012 in the same group are attracted to each other, thereby controlling the printing plate 9013 to mark the sampling test paper. After the marking work is completed, the electromagnet plate 9012 is powered off. The spring 9010 and the telescopic rod 9011 can control the electromagnet plate 9012 and the printing plate 9013 to reset to the initial position. This method can not only clearly mark the time period of the test paper rotation controlled by the motor, so that the staff can easily distinguish each sampling time period, which is convenient for subsequent data analysis and result interpretation, but also makes it easy for the staff to distinguish the sampling results of different areas in the sampling test paper, thereby improving the use value of the device.

[0067] In this embodiment, the output end of the central processing unit 2 is electrically connected to the input end of the first cylinder 3, the input end of the first motor 7002, the input end of the second cylinder 8002, the input end of the second motor 9002, the input end of the third cylinder 9007 and the input end of the electromagnet plate 9012, respectively, and the output end and input end of the relative distance acquisition module 10 and the output end and input end of the motion speed acquisition module 11 are electrically connected to the input end and output end of the central processing unit 2 respectively;

[0068] It should be noted that electrical connection refers to the process of transmitting electric current from one part of an electronic device or circuit to another part through conductive materials or conductive elements. This connection is a key component of the operation of electronic devices and circuits. It ensures the effective transmission and connection of electron flow in electronic devices. Electrical connection can be made using wires. The electrical connection method between the central processing unit 2 and the first cylinder 3, the first motor 7002, the second cylinder 8002, the second motor 9002, the third cylinder 9007, the electromagnet plate 9012, the relative distance acquisition module 10 and the motion speed acquisition module 11 is not specifically limited and can be selected according to actual needs.

[0069] When it is necessary to sample the virus content in different areas of the air, taking into account the working time of the first cylinder 3 and the sealing mechanism 8, that is, the time when the sampling test paper has not been isolated from the air in other areas, the air in different areas will still affect the sampling results of the sampling test paper and reduce the accuracy of the sampling. At the same time, when the paper changing mechanism 7 replaces the sampling test paper, if the electromagnet plate 9012 in the marking mechanism 9 is always energized, that is, if the marking mechanism 9 keeps marking the sampling test paper, it will cause certain damage to the sampling test paper, which is not only inconvenient for the paper changing mechanism 7 to replace the sampling test paper, but also the damaged sampling test papers may overlap, which will still have a certain impact on the sampling results. Therefore, in order to ensure the accuracy of the sampling results and the normal collection of the sampling test paper, during the working time of the first cylinder 3, the paper changing mechanism 7 and the sealing mechanism 8, it is necessary to perform real-time detection of whether the marking mechanism 9 has completed the marking work, and make timely adjustments based on the detection results.

[0070] In this embodiment, the relative distance mutation coefficient refers to the difference between the preset relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T and the actual relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009. If the difference is small, the relative distance mutation coefficient is smaller, indicating that the marking mechanism 9 has not completed the marking work. If the difference is large, the relative distance mutation coefficient is larger, indicating that the marking mechanism 9 has completed the marking work.

[0071] The logic for obtaining the relative distance mutation coefficient is:

[0072] S1. The actual relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T is obtained through the relative distance acquisition module 10, and the preset relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T is obtained through the central processor 2. The preset relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T and the actual relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 are calibrated as and , Indicates the actual relative distance and the preset relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T, , is a positive integer;

[0073] It should be noted that the preset relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T can be obtained by obtaining relevant experimental data through a large number of experiments during the design stage of the device, and the method of obtaining the preset relative distance between the electromagnetic plate 9012 and the inner wall of the clamp arm 9009 at different times within the time T is not specifically limited here, and can be selected according to actual needs;

[0074] S2. Calculate the relative distance mutation coefficient. The calculation expression is:

[0075] , where is the relative distance mutation coefficient.

[0076] In this embodiment, the movement speed stability index refers to the stability between the actual movement speeds of the sampling test paper when the paper changing mechanism 7 changes the sampling test paper at different times within the time T. If the stability is good, that is, the smaller the movement speed stability index is, it indicates that the sampling test paper has not been marked by the marking mechanism 9. If the stability is poor, that is, the larger the movement speed stability index is, it indicates that the sampling test paper has been marked by the marking mechanism 9.

[0077] The logic for obtaining the motion speed stability index is:

[0078] S1. The actual movement speed of the sampling test paper when the paper changing mechanism 7 changes the sampling test paper at different times within T is obtained through the movement speed acquisition module 11, and the actual movement speed of the sampling test paper when the paper changing mechanism 7 changes the sampling test paper at different times within T is calibrated as , The number representing the actual movement speed of the sampling test paper when the paper changing mechanism 7 changes the sampling test paper at different times within the time T, , is a positive integer;

[0079] S2. Calculate the motion speed stability index. The calculation expression is:

[0080] , where It is the movement speed stability index.

[0081] In this embodiment, the expression formula of the evaluation coefficient is:

[0082] Will and After dimensionless processing, the central processing unit 2 performs a formula analysis according to the formula:

[0083]

[0084] In the formula, is the evaluation coefficient, and are the preset proportional coefficients of the relative distance mutation coefficient and the motion speed stability index, respectively, and and All are greater than 0;

[0085] From the calculated expression, we can see that the relative distance mutation coefficient and motion speed stability index The smaller the evaluation coefficient The smaller it is;

[0086] It should be noted that dimensionless is a process of expressing physical quantities in dimensionless form. This method can eliminate the influence of units on physical problems, making the problems more concise and universal. The preset proportional coefficients of the relative distance mutation coefficient and the motion speed stability index are and In order to more flexibly adapt to different working conditions and environmental changes in actual monitoring, these deviation coefficients can be adjusted according to specific circumstances to improve the performance and applicability of the monitoring system.

[0087] In this embodiment, the preset evaluation coefficient reference threshold is set to ,in , the central processor 2 calculates the evaluation coefficient and the pre-set reference threshold of the evaluation coefficient Compare and judge whether the marking work of the marking mechanism 9 on the sampling test paper is completed, and control the working state of the marking mechanism 9 according to the comparison result. The specific judgment is as follows:

[0088] when When the marking mechanism 9 has not completed the marking work on the sampling test paper, a hidden danger signal will be generated. After receiving the hidden danger signal, the central processing unit 2 generates a holding signal and transmits the holding signal to the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 respectively. After receiving the holding signal, the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 control the marking mechanism 9 to perform the holding work;

[0089] The holding work specifically refers to: after the second motor 9002 receives the holding signal, it continues to control the double-threaded screw 9003 to rotate, thereby controlling the slider 9004 to slide on the inner wall of the slide rail 9005, thereby controlling the third cylinder 9007 to lift and lower, and lift to a position where the third cylinder 9007 controls the clamp arm 9009 to move without causing damage to the sampling test paper. Then, after the third cylinder 9007 receives the holding signal, it controls the third telescopic rod 9008 to continue to extend and retract, thereby controlling the clamp arm 9009 to move to the position where the sampling test paper is located, that is, the mid-vertical line of the clamp arm 9009 is in the vertical plane where the sampling test paper is located, and then the clamp arm 9009 is controlled by the second motor 9002 to lift and lower to the marking position, that is, the position where the printing plate 9013 can mark the sampling test paper. Then, after the electromagnet plate 9012 receives the holding signal, it is energized, and the electromagnet plates 9012 of the same group are mutually adsorbed, thereby controlling the printing plate 9013 to mark the sampling test paper;

[0090] It should be noted that, considering that within the time T, the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 in the marking mechanism 9 have a sequential working order, the specific definition has been explained in the previous paragraph, and without affecting the specific definition, the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 control the marking mechanism 9 to perform the marking work;

[0091] when When , it indicates that the marking work of the marking mechanism 9 on the sampling test paper is completed, and an end signal will be generated at this time. After receiving the end signal, the central processing unit 2 generates a reset signal and transmits the reset signal to the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 respectively. After the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 receive the reset signal, they control the marking mechanism 9 to perform the reset work;

[0092] The reset work specifically refers to: after the electromagnet plate 9012 receives the reset signal, the power is cut off. Since the spring 9010 and the telescopic rod 9011 can control the electromagnet plate 9012 and the printing plate 9013 to reset to the initial position, the second motor 9002 receives the reset signal and controls the double-threaded screw 9003 to rotate, thereby controlling the third cylinder 9007 to move up and down, and lifts to a position where the third cylinder 9007 controls the clamping arm 9009 to move without causing damage to the sampling test paper. After the third cylinder 9007 receives the reset signal, it controls the third telescopic rod 9008 to contract, thereby controlling the clamping arm 9009 to move to the initial position, that is, the marking mechanism 9 is restored to the state where no marking work is performed.

[0093] A method for a virus detection sampling device, comprising the following steps:

[0094] Step 1, the central processing unit 2 receives the input command signal, analyzes the received command signal, generates a working signal and a collection signal, and transmits the working signal to the first cylinder 3, the first motor 7002, the second cylinder 8002, the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 respectively. After receiving the working signal, the first cylinder 3, the first motor 7002, the second cylinder 8002, the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 respectively control the paper changing mechanism 7, the sealing mechanism 8 and the marking mechanism 9 to work, and transmit the collection signal to the relative distance collection module 10 and the movement speed collection module 11 respectively. After receiving the collection signal, the relative distance collection module 10 and the movement speed collection module 11 respectively collect information on the actual relative distance between the electromagnet plate 9012 and the inner wall of the clamp arm 9009 and the actual movement speed of the sampling test paper when the paper changing mechanism 7 replaces the sampling test paper, and transmit the collected information to the central processing unit 2;

[0095] Step 2, after receiving the information collected by the relative distance acquisition module 10 and the motion speed acquisition module 11, the central processing unit 2 analyzes them respectively and generates a relative distance mutation coefficient and a motion speed stability index. The central processing unit 2 performs a comprehensive analysis on the generated relative distance mutation coefficient and the motion speed stability index to generate an evaluation coefficient. By comparing the evaluation coefficient with a preset evaluation coefficient reference threshold, it is determined whether the marking work of the marking mechanism 9 on the sampling test paper is completed, and the working state of the marking mechanism 9 is controlled according to the comparison result;

[0096] Step three, if the evaluation coefficient is less than the preset evaluation coefficient threshold, the marking work of the marking mechanism 9 on the sampling test paper is not completed, and a hidden danger signal is generated. After the central processing unit 2 receives the hidden danger signal, it generates a holding signal and transmits the holding signal to the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 respectively. After the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 receive the holding signal, they control the marking mechanism 9 to perform the holding work; if the evaluation coefficient is not less than the preset evaluation coefficient threshold, the marking work of the marking mechanism 9 on the sampling test paper is completed and an end signal is generated. After the central processing unit 2 receives the end signal, it generates a reset signal and transmits the reset signal to the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 respectively. After the second motor 9002, the third cylinder 9007 and the electromagnet plate 9012 receive the reset signal, they control the marking mechanism 9 to reset.

[0097] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0098] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0099] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0100] In the several embodiments provided in the present application, it should be understood that the disclosed overall system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another overall system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0101] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0102] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0103] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A sampling device for virus detection, comprising a vehicle seat (1), characterized in that: The top of the vehicle seat (1) is provided with a central processing unit (2) and a first cylinder (3), the output shaft of the first cylinder (3) is drivingly connected to a first telescopic rod (4), the top of the first telescopic rod (4) is fixedly connected to a load-bearing plate (5), the top of the load-bearing plate (5) is provided with a box (6) and a marking mechanism (9), the marking mechanism (9) comprises a clamping arm (9009) and an electromagnet plate (9012), the inside of the box (6) is provided with a paper changing mechanism (7), the paper changing mechanism (7) is used to change the sampling test paper, the outer wall of the box (6) is provided with a sealing mechanism (8), the sealing mechanism (8) is used to isolate the sampling influence of the external air on the sampling test paper, and the marking mechanism (9) is used to mark the sampling test paper; Also includes: A relative distance acquisition module (10) is arranged on the inner top wall of the clamp arm (9009) and is used to obtain the actual relative distance between the electromagnet plate (9012) and the inner wall of the clamp arm (9009) in real time, and to generate a relative distance mutation coefficient through a central processor (2); A motion speed acquisition module (11) is arranged on the inner wall of the box body (6) and is used to obtain in real time the actual motion speed of the sampling test paper when the paper changing mechanism (7) changes the sampling test paper, and to generate a motion speed stability index through the central processor (2); The central processor (2) performs a comprehensive analysis on the generated relative distance mutation coefficient and the movement speed stability index to generate an evaluation coefficient, compares the evaluation coefficient with a preset evaluation coefficient reference threshold, determines whether the marking work of the marking mechanism (9) on the sample test paper is completed, and controls the working state of the marking mechanism (9) according to the comparison result; The acquisition logic of the relative distance mutation coefficient is: S1. The actual relative distance between the electromagnetic plate (9012) and the inner wall of the clamp arm (9009) at different times within a time T is obtained through the relative distance acquisition module (10), and the preset relative distance between the electromagnetic plate (9012) and the inner wall of the clamp arm (9009) at different times within a time T is obtained through the central processor (2), and the preset relative distance between the electromagnetic plate (9012) and the inner wall of the clamp arm (9009) at different times within a time T and the actual relative distance between the electromagnetic plate (9012) and the inner wall of the clamp arm (9009) are calibrated as and , Indicates the actual relative distance and the preset relative distance between the electromagnet plate (9012) and the inner wall of the clamp arm (9009) at different times within the time T, , is a positive integer; S2. Calculate the relative distance mutation coefficient. The calculation expression is: , where is the relative distance mutation coefficient; The acquisition logic of the motion speed stability index is: S1. The actual movement speed of the sampling test paper when the paper changing mechanism (7) changes the sampling test paper at different times within the time T is obtained through the movement speed acquisition module (11), and the actual movement speed of the sampling test paper when the paper changing mechanism (7) changes the sampling test paper at different times within the time T is calibrated as , The number representing the actual movement speed of the sampling test paper when the paper changing mechanism (7) changes the sampling test paper at different times within the time T, , is a positive integer; S2. Calculate the motion speed stability index. The calculation expression is: , where is the movement speed stability index; The expression formula of the evaluation coefficient is: The central processing unit (2) performs a formula analysis according to the formula: In the formula, is the evaluation coefficient, and are the preset proportional coefficients of the relative distance mutation coefficient and the motion speed stability index, respectively, and and Both are greater than 0.

2. A sampling device for virus detection according to claim 1, characterized in that: The paper changing mechanism (7) comprises a first motor fixing frame (7001), a first motor (7002), a rotating shaft (7003), a fixed shaft (7004), a collecting roller (7005), a test paper placement roller (7006) and a diaphragm placement roller (7007); the inner wall of the first motor fixing frame (7001) is fixedly connected to the outer wall of the first motor (7002); the output shaft of the first motor (7002) is transmission-connected to one end of the rotating shaft (7003); the outer wall of the rotating shaft (7003) is transmission-connected to the inner wall of the collecting roller (7005); the outer wall of the fixed shaft (7004) is movably connected to the inner wall of the test paper placement roller (7006) and the inner wall of the diaphragm placement roller (7007) via bearings; and the bottom of the fixed shaft (7004) is fixedly connected to the top of the load-bearing plate (5).

3. A sampling device for virus detection according to claim 2, characterized in that: The sealing mechanism (8) comprises a second cylinder support frame (8001), a second cylinder (8002), a second telescopic rod (8003), a sealing plate (8004), a sealing plate slide rail (8005) and a top plate (8006); one side of the second cylinder support frame (8001) is fixedly connected to the outer wall of the box body (6); the top of the second cylinder support frame (8001) is fixedly connected to the bottom of the second cylinder (8002); the transmission end of the second cylinder (8002) is fixedly connected to the bottom of the second cylinder (8002); The output shaft is drivingly connected to one end of the second telescopic rod (8003); the other end of the second telescopic rod (8003) is fixedly connected to one side of the sealing plate (8004); the outer wall of the sealing plate (8004) is slidably connected to the inner wall of the sealing plate slide rail (8005); one side of the sealing plate slide rail (8005) is fixedly connected to the bottom of the top plate (8006) and the top of the load-bearing plate (5); and the side wall of the top plate (8006) is fixedly connected to the outer wall of the box body (6).

4. A sampling device for virus detection according to claim 3, characterized in that: The marking mechanism (9) further comprises a second motor fixing frame (9001), a second motor (9002), a double-threaded screw (9003), a slider (9004), a slide rail (9005), a third cylinder support frame (9006), a third cylinder (9007), a third telescopic rod (9008), a spring (9010), a telescopic rod (9011) and a printing plate (9013); the inner wall of the second motor fixing frame (9001) is fixedly connected to the outer wall of the second motor (9002); the output shaft of the second motor (9002) is transmission-connected to one end of the double-threaded screw (9003); the outer wall of the double-threaded screw (9003) is transmission-connected to the inner wall of the slider (9004); the outer wall of the slider (9004) is slidably connected to the inner wall of the slide rail (9005); One side of the slider (9004) is fixedly connected to one side of the third cylinder support frame (9006), the top of the third cylinder support frame (9006) is fixedly connected to the bottom of the third cylinder (9007), the output shaft of the third cylinder (9007) is transmission-connected to one end of the third telescopic rod (9008), the other end of the third telescopic rod (9008) is fixedly connected to one side of the clamping arm (9009), the inner side wall of the clamping arm (9009) is respectively fixedly connected to one end of the spring (9010) and one end of the telescopic rod (9011), the other end of the spring (9010) and the other end of the telescopic rod (9011) are both fixedly connected to one side of the electromagnet plate (9012), and the other side of the electromagnet plate (9012) is fixedly connected to one side of the printing plate (9013).

5. A sampling device for virus detection according to claim 4, characterized in that: The output end of the central processing unit (2) is electrically connected to the input end of the first cylinder (3), the input end of the first motor (7002), the input end of the second cylinder (8002), the input end of the second motor (9002), the input end of the third cylinder (9007) and the input end of the electromagnet plate (9012), respectively; the output end and input end of the relative distance acquisition module (10) and the output end and input end of the motion speed acquisition module (11) are electrically connected to the input end and output end of the central processing unit (2), respectively.

6. A sampling device for virus detection according to claim 1, characterized in that: The pre-set evaluation coefficient reference threshold is set to ,in , the evaluation coefficient calculated by the central processing unit (2) and the pre-set reference threshold of the evaluation coefficient A comparison is performed to determine whether the marking work of the marking mechanism (9) on the sample test paper is completed, and the working state of the marking mechanism (9) is controlled according to the comparison result. The specific determination is as follows: when When the marking mechanism (9) has not completed the marking work on the sampling test paper, a hidden danger signal is generated. After receiving the hidden danger signal, the central processing unit (2) generates a holding signal and transmits the holding signal to the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) respectively. After receiving the holding signal, the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) control the marking mechanism (9) to perform the holding work; when When the marking mechanism (9) completes the marking work on the sampling test paper and generates an end signal, the central processing unit (2) generates a reset signal after receiving the end signal, and transmits the reset signal to the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) respectively. After receiving the reset signal, the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) control the marking mechanism (9) to perform the reset work.

7. A method based on a sampling device for virus detection as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1, the central processing unit (2) receives the input command signal, analyzes the received command signal, generates a working signal and a collection signal, and transmits the working signal to the first cylinder (3), the first motor (7002), the second cylinder (8002), the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) respectively; the first cylinder (3), the first motor (7002), the second cylinder (8002), the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) receive the working signal After receiving the signal, the paper changing mechanism (7), the sealing mechanism (8) and the marking mechanism (9) are controlled to work respectively, and the collected signal is transmitted to the relative distance collection module (10) and the movement speed collection module (11) respectively. After receiving the collected signal, the relative distance collection module (10) and the movement speed collection module (11) respectively collect information on the actual relative distance between the electromagnet plate (9012) and the inner wall of the clamping arm (9009) and the actual movement speed of the sampling test paper when the paper changing mechanism (7) replaces the sampling test paper, and transmit the collected information to the central processing unit (2); Step 2: After receiving the information collected by the relative distance acquisition module (10) and the motion speed acquisition module (11), the central processing unit (2) analyzes the information respectively and generates a relative distance mutation coefficient and a motion speed stability index. The central processing unit (2) performs a comprehensive analysis on the generated relative distance mutation coefficient and the motion speed stability index to generate an evaluation coefficient. By comparing the evaluation coefficient with a preset evaluation coefficient reference threshold, it is determined whether the marking work of the marking mechanism (9) on the sampling test paper is completed, and the working state of the marking mechanism (9) is controlled according to the comparison result. Step 3: If the evaluation coefficient is less than the preset evaluation coefficient threshold, the marking work of the marking mechanism (9) on the sample test paper is not completed, and a hidden danger signal is generated. After receiving the hidden danger signal, the central processing unit (2) generates a holding signal, and transmits the holding signal to the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) respectively. After receiving the holding signal, the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) control the marking mechanism (9) to perform the holding work; if the evaluation coefficient is not less than the preset evaluation coefficient threshold, the marking work of the marking mechanism (9) on the sample test paper is completed, and an end signal is generated. After receiving the end signal, the central processing unit (2) generates a reset signal, and transmits the reset signal to the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) respectively. After receiving the reset signal, the second motor (9002), the third cylinder (9007) and the electromagnet plate (9012) control the marking mechanism (9) to perform the reset work.

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