A method for monitoring the movement of test tubes and a test tube carrying device

Abstract

The present invention relates to the technical field of test tube racks, and particularly to a method for monitoring the movement of test tubes and a test tube carrying device. The method for monitoring the movement of test tubes includes selecting a clamping position and clamping a test tube through the test tube carrying device, obtaining the movement influence parameters of the test tube to determine whether there is a solid substance. If not, the test tube is moved at a first speed. If there is, it is further determined whether the distance between the solid substance and the liquid surface is greater than a preset distance. Otherwise, the risk characterization parameter is determined according to the distance between the solid substance and the liquid surface and the viscosity of the reagent. According to the risk characterization parameter, the corresponding movement speed within a preset speed range is selected as the movement speed of the test tube carrying device. If so, the second speed is selected as the movement speed of the test tube carrying device. Finally, the test tube carrying device is moved to the specified position at the determined movement speed; it can effectively overcome the problem that the solid substance in the reagent adheres to the test tube wall due to the liquid level fluctuation caused by too fast movement speed, affecting the quality of the reagent and increasing the difficulty of cleaning the test tube.

Description

Technical Field

[0001] The present invention relates to the technical field of test tube racks, and particularly to a method for monitoring the movement of test tubes and a test tube carrying device. Background Art

[0002] In laboratory automation and industrial production, test tubes, as common liquid storage and reaction containers, their safe and efficient movement and transportation are key links to ensure the accuracy of experiments and production efficiency. However, traditional test tube movement methods have significant technical limitations when dealing with complex reagent properties (such as containing solid suspensions and high-viscosity liquids), and there is an urgent need to be optimized through intelligent monitoring means.

[0003] For example, in the prior art, Chinese Patent Publication No. CN110605153A discloses a method for monitoring test tubes in a biological sample detection system, which includes: sequentially scanning the codes of the test tubes to be loaded into the test tube bracket, and storing the scanned code information in a processor; controlling the test tubes to enter the troughs of the test tube bracket, and marking the information of each test tube; for the test tubes to be removed from the test tube bracket, the scanned code information of the corresponding test tubes is removed from the processor, and the scanned code information is sent to the controller of the next process. By storing the scanned code information of the test tubes and marking the information of each test tube, when the test tubes are moved to the next station, the test tube information is automatically sent to the controller of the next process, realizing the sharing of scanned code information, eliminating the need for repeated scanning, and improving work efficiency.

[0004] However, during the movement of the test tubes, it is easy to occur that due to the too fast movement speed, the solid substances in the reagent adhere to the test tube wall due to the liquid level fluctuation, affecting the quality of the reagent and increasing the difficulty of cleaning the test tubes. Summary of the Invention

[0005] Therefore, the present invention provides a method for monitoring the movement of test tubes and a test tube carrying device to overcome the problem in the prior art that it is easy to occur that due to the too fast movement speed, the solid substances in the reagent adhere to the test tube wall due to the liquid level fluctuation, affecting the quality of the reagent and increasing the difficulty of cleaning the test tubes.

[0006] To achieve the above object, on the one hand, the present invention provides a method for monitoring the movement of test tubes, including:

[0007] Step S1, selecting a clamping position based on the liquid level height of the reagent in the test tube and clamping the test tube through the test tube carrying device at the corresponding clamping position;

[0008] Step S2, after all the test tubes on the test tube carrying device are placed, obtaining the movement influence parameters of each test tube and determining whether there are solid substances in the test tubes according to the movement influence parameters. If there are no solid substances in all the test tubes, selecting the first speed as the movement speed of the test tube carrying device. If there are solid substances in any one of the test tubes, performing Step S3;

[0009] Step S3: Determine whether there is a test tube in which the distance between the solid matter and the liquid surface is greater than the preset distance. If not, determine the risk characterization parameter according to the distance between the solid matter and the liquid surface and the viscosity of the reagent, and select the corresponding moving speed within the preset speed range as the moving speed of the test tube carrying device. If so, select the second speed as the moving speed of the test tube carrying device;

[0010] Step S4: Move the test tube carrying device to the designated position at the moving speed determined in Step S3;

[0011] Wherein, the moving influence parameters include the composition and viscosity of the reagent, and the position distribution of the solid matter in the presence of the solid matter. The first speed is greater than the second speed, and the interval values within the preset speed range are all less than the second speed.

[0012] As a preferred technical solution of the test tube movement monitoring method, in the Step S1, the process of selecting the clamping position based on the liquid level height of the reagent in the test tube includes:

[0013] Step S11: Obtain the liquid level height of the reagent in the test tube;

[0014] Step S12: Determine the clamping position according to the comparison relationship between the liquid level height and the preset height: When the liquid level height is higher than the preset height, select the upper part of the test tube for clamping; when the liquid level height is lower than the preset height, select the lower part of the test tube for clamping;

[0015] Step S13: Clamp the test tube at the corresponding clamping position through the test tube carrying device.

[0016] As a preferred technical solution of the test tube movement monitoring method, in the Step S3, the risk characterization parameter is negatively correlated with both the viscosity of the reagent and the distance between the solid matter and the liquid surface;

[0017] Wherein, the higher the value of the risk characterization parameter, the higher the probability that the solid matter adheres to the tube wall due to the movement of the test tube carrying device.

[0018] As a preferred technical solution of the test tube movement monitoring method, the determination of the distance between the solid matter and the liquid surface includes:

[0019] Determine the solid matter with the highest position according to the position distribution of the solid matter;

[0020] Determine the distance between the solid matter with the highest position and the liquid surface as the distance between the solid matter and the liquid surface.

[0021] As a preferred technical solution of the test tube movement monitoring method, Step S3 further includes establishing a mapping relationship between the risk characterization parameter and the interval values within the preset speed range;

[0022] The mapping relationship satisfies that the higher the risk characterization parameter, the lower the corresponding selected interval value.

[0023] As a preferred technical solution of the test tube movement monitoring method, in step S2, the process of acquiring the position distribution of the solid object includes:

[0024] Optical detection technology is used to scan the vertical section of the reagent in the test tube to obtain the position distribution of the solid matter.

[0025] As a preferred technical solution of the test tube movement monitoring method, in step S2, the composition and viscosity of the reagent are obtained by identifying the reagent label.

[0026] On the other hand, the present invention further provides a test tube carrying device, which is applied to the test tube movement monitoring method described in any of the above schemes, comprising:

[0027] The first carrier plate and the second carrier plate are arranged horizontally from top to bottom, and the first carrier plate and the second carrier plate are fixedly connected by a connecting member. A gripper for grasping and moving and a sliding protrusion for moving in a slide rail are respectively arranged on the side of the connecting member away from the first carrier plate and the second carrier plate.

[0028] As a preferred technical solution for the test tube carrying device, the first carrier plate and the second carrier plate are provided with a plurality of through holes matching the diameter of the test tube arranged in an array at the same position in the vertical direction, and clamps for fixing the test tube are provided under the through holes.

[0029] Compared with the prior art, the beneficial effect of the present invention lies in that different clamping positions can be selected to clamp the test tube through the structural setting of the test tube carrying device, and different mobile devices such as manipulators or slide rails can be matched to move the test tube carrying device. On the basis of the structural setting of the test tube carrying device, the test tube movement monitoring method of the present invention selects the moving speed of the test tube carrying device according to the presence or absence of solid matter and the distance between the solid matter and the liquid surface. In the case where the solid matter does not exist, there will be no solid matter adhesion, so it moves at the highest first speed. In the case where the solid matter exists, the distance between the solid matter and the liquid surface is determined to characterize the risk characterization parameter of the probability of the solid matter being attached to the tube wall due to the movement of the test tube carrying device. The principle of its determination is that the greater the distance between the solid matter in the reagent and the liquid surface, the smaller the risk of the solid matter being above the liquid surface through movement fluctuations. At the same time, for reagents with higher viscosity, the smaller the degree of liquid level fluctuation caused by the movement speed, and thus the risk of the solid matter being above the liquid surface through movement fluctuations is smaller. In this way, a comprehensive movement speed selection can be performed for different reagent states, and efficient and safe movement of multiple test tubes can be achieved at the same time.

[0030] In particular, the present invention significantly improves the safety and efficiency during the movement of test tubes by dynamically adjusting the clamping position, moving speed, and risk quantification mechanism. Traditional methods, due to fixed speed and clamping position, are prone to causing liquid level fluctuations, which in turn lead to the adhesion of solid substances to the inner wall of the test tube, affecting the quality of the reagent and increasing the cleaning difficulty. The present invention, through the dynamic clamping position selection and risk quantification mechanism, combines the distance between the solid substance and the liquid level, and the viscosity of the reagent to calculate the risk characterization parameter, and dynamically adjusts the moving speed to avoid the adhesion of solid substances caused by liquid level fluctuations. Experiments show that after adopting the method of the present invention, the adhesion rate of solid substances is reduced by more than 80%, significantly improving the quality of the reagent and the cleaning efficiency of the test tube.

[0031] In particular, the present invention achieves a balance between efficiency and safety through multi-parameter coupling decision-making and real-time monitoring. Traditional methods, due to the lack of solid substance detection and risk assessment mechanisms, usually adopt a conservative low-speed movement strategy, resulting in low efficiency. The present invention combines the reagent composition, viscosity, and solid substance distribution, dynamically selects the moving speed, and adopts a faster speed when there is no solid substance, significantly improving the transportation efficiency. At the same time, the real-time distribution of solid substances is obtained through an optical sensor or an ultrasonic detection device, and the movement trend is predicted by combining a three-dimensional distribution model to avoid risks in advance.

[0032] In particular, the present invention realizes the optimization of the precise clamping position. The position for clamping the test tube is determined according to the height of the reagent liquid level. When the liquid level is relatively high, the upper part is selected for clamping, and when the liquid level is relatively low, the lower part is selected for clamping, avoiding additional disturbance to the reagent during the clamping process.

[0033] In particular, the present invention effectively reduces the possibility of solid suspended matter adhering to the test tube wall by optimizing the moving speed and clamping strategy, improves the cleanliness of the experimental environment, and reduces the cleaning cost of the test tube. Automatically selects a suitable moving speed based on the risk characterization parameter and reagent characteristics, making the entire test tube movement process more intelligent and stable. Description of the Drawings

[0034] Figure 1 It is a flowchart of the test tube movement monitoring method according to an embodiment of the present invention;

[0035] Figure 2 It is a flowchart of selecting the clamping position according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic structural diagram of the test tube carrying device according to an embodiment of the present invention;

[0037] Figure 4 It is a schematic structural diagram of the first carrier plate or the second carrier plate according to an embodiment of the present invention.

[0038] In the figure: 1. First carrier plate; 2. Second carrier plate; 3. Connecting piece; 4. Gripper; 5. Sliding convex part; 6. Through hole; 7. Clamping piece. Detailed Embodiments

[0039] In order to make the objectives and advantages of the present invention more clearly understood, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0041] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0042] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0043] Please refer to Figure 3 and Figure 4 shown, which are respectively the structural schematic diagram of the test tube carrying device according to the embodiment of the present invention and the structural schematic diagram of the first carrier plate or the second carrier plate according to the embodiment of the present invention; this embodiment provides a test tube carrying device capable of simultaneously grasping and moving or moving multiple test tubes in a rail-guided manner. The test tube carrying device includes a first carrier plate 1 and a second carrier plate 2 horizontally arranged in sequence from top to bottom. The first carrier plate 1 and the second carrier plate 2 are fixedly connected by a connecting member 3. On the side of the connecting member 3 facing away from the first carrier plate 1 and the second carrier plate 2, a gripper 4 for grasping and moving and a sliding protrusion 5 for moving in the rail are respectively arranged. A plurality of through holes 6 matching the caliber of the test tubes are arranged in an array at the same position in the vertical direction of the first carrier plate 1 and the second carrier plate 2. Below the through holes 6, clamping members 7 for fixing the test tubes are provided (the clamping members 7 fix or release the fixation of the test tubes by locking or unlocking). Through the above configuration, different clamping positions can be selected to clamp the test tubes, and different moving devices such as manipulators or rails can be matched to move the test tube carrying device.

[0044] To ensure the stability of the reagent when the test tube carrier device moves while guaranteeing the transfer efficiency, and to avoid the attachment of solid substances to the tube wall due to the inertia of sudden stop after movement, which may affect subsequent cleaning and reagent quality, in combination with Figure 3 and Figure 4 Referring to Figure 1 as shown, this embodiment also provides a test tube movement monitoring method for the above-mentioned test tube carrier device, including the following steps:

[0045] Step S1, select a clamping position based on the liquid level height of the reagent in the test tube and clamp the test tube through the test tube carrier device at the corresponding clamping position;

[0046] Step S2, after all the test tubes on the test tube carrier device are placed, obtain the movement influence parameters of each test tube and determine whether there is solid matter in the test tube according to the movement influence parameters. If there is no solid matter in each test tube, select the first speed as the movement speed of the test tube carrier device. If there is solid matter in any test tube, execute Step S3;

[0047] Step S3, determine whether there is a test tube in which the distance between the solid matter and the liquid surface is greater than the preset distance (in this embodiment, the preset distance is 20% of the rated liquid level height, and it can be set to other values according to the actual working conditions). If not, determine the risk characterization parameter according to the distance between the solid matter and the liquid surface and the viscosity of the reagent, and select the corresponding movement speed within the preset speed range as the movement speed of the test tube carrier device according to the risk characterization parameter. If so, select the second speed as the movement speed of the test tube carrier device;

[0048] Step S4, move the test tube carrier device to the designated position at the movement speed determined in Step S3;

[0049] Among them, the movement influence parameters include the composition and viscosity of the reagent, and the position distribution of the solid matter in the case of the existence of the solid matter. The first speed is greater than the second speed, and the interval values within the preset speed range are all less than the second speed. Specifically, the first speed is the maximum movement speed set according to the production specifications, the second speed is 80% of the maximum movement speed, and the preset speed range is an open interval, whose endpoints are the second speed and the minimum movement speed obtained according to the production specifications. If there is no production specification constraint or the maximum movement speed and the minimum movement speed are not agreed upon, the maximum movement speed and the minimum movement speed can be determined according to the operating parameters of the corresponding moving device (such as a manipulator or an electric slide rail), as long as the speed monitoring principle of the test tube carrier device of the present invention is satisfied, which will not be elaborated here. In this embodiment, the first speed is 1 m / s, the second speed is 0.8 m / s, and the preset speed range is (0.2 m / s, 0.8 m / s).

[0050] In the above embodiments, through the structural arrangement of the test tube carrying device, different clamping positions can be selected to clamp the test tube, and different moving devices such as a manipulator or a slide rail can be matched to move the test tube carrying device. Based on the structural arrangement of the test tube carrying device, in the test tube movement monitoring method, the moving speed of the test tube carrying device is selected by determining the presence or absence of solid substances and the distance between the solid substances and the liquid level. In the case where there is no solid substance, there will be no situation of solid substance adhesion, so it moves at the highest first speed. In the case where there is a solid substance, a risk characterization parameter representing the probability of the solid substance adhering to the tube wall due to the movement of the test tube carrying device is determined by the distance between the solid substance and the liquid level. The principle of its determination is that the larger the distance between the solid substance and the liquid level, the smaller the risk of moving and fluctuating above the liquid level. At the same time, for reagents with higher viscosity, the degree of liquid level fluctuation caused by the moving speed is smaller, and thus the risk of the solid substance moving and fluctuating above the liquid level is smaller. In this way, the moving speed can be comprehensively selected for different reagent states, and the efficient and safe movement of multiple test tubes can be realized at the same time. It should be understood that the liquid level distance described in this application refers to the distance between the solid substance in the reagent and the liquid level.

[0051] Please refer to Figure 2 As shown, in step S1, the process of selecting the clamping position based on the liquid level height of the reagent in the test tube includes:

[0052] Step S11, obtaining the liquid level height of the reagent in the test tube;

[0053] Step S12, determining the clamping position according to the comparison relationship between the liquid level height and the preset height: when the liquid level height is higher than the preset height, select the upper part of the test tube for clamping; when the liquid level height is lower than the preset height (in this embodiment, the preset height is 50% of the rated liquid level height, and in practice, it can be adaptively calibrated and adjusted in combination with the test tube size, which will not be elaborated here), select the lower part of the test tube for clamping;

[0054] Step S13, clamping the test tube at the corresponding clamping position through the test tube carrying device.

[0055] The above process of determining the clamping position realizes the optimization of the precise clamping position. The clamping position of the test tube is determined according to the liquid level height of the reagent. When the liquid level is higher, select the upper part for clamping; when the liquid level is lower, select the lower part for clamping, avoiding additional disturbance to the reagent during the clamping process.

[0056] Specifically, in step S3, the risk characterization parameter is negatively correlated with both the viscosity of the reagent and the distance between the solid substance and the liquid level;

[0057] Among them, the higher the value of the risk characterization parameter, the higher the probability that the solid matter adheres to the tube wall due to the movement of the test tube carrying device. Exemplarily, the determination of the risk characterization parameter includes determining the ratio K1 of the average viscosity of all test tubes on the test tube rack to the reagent viscosity, and the ratio K2 of the rated liquid level height to the distance between the solid matter and the liquid surface. The risk characterization parameter is determined as the sum of K1 and K2. In practice, the risk characterization parameter can also be determined by other methods, as long as it satisfies the relevant relationship with the corresponding parameters.

[0058] Specifically, the determination of the distance between the solid matter and the liquid surface includes:

[0059] Determine the solid matter with the highest position according to the position distribution of the solid matter;

[0060] Determine the distance between the solid matter with the highest position and the liquid surface as the distance between the solid matter and the liquid surface. It should be understood that in the above embodiment, the test tube for determining the risk characterization parameter is the test tube where the solid matter with the highest position is located. If the stable movement of this test tube can be ensured, the movement stability of the remaining test tubes can also be ensured simultaneously.

[0061] Specifically, step S3 further includes establishing a mapping relationship between the risk characterization parameter and the interval values within the preset speed range;

[0062] Among them, the mapping relationship satisfies that the higher the risk characterization parameter, the lower the selected interval value. The setting of the mapping relationship can meet the above requirements. Exemplarily, the specific process of establishing the mapping relationship between the risk characterization parameter and the interval values within the preset speed range includes:

[0063] Establish the numerical distribution of the risk characterization parameter through a finite number of experiments, and establish the mapping relationship between the numerical distribution range of the risk characterization parameter and the preset speed range. The mapping relationship needs to satisfy that the range of the interval value corresponding to the risk characterization parameter covers at least 95% of the preset speed range, and a single risk characterization parameter corresponds to a single interval value.

[0064] Specifically, in step S2, the process of obtaining the position distribution of the solid matter includes:

[0065] Use optical detection technology to scan the vertical section of the reagent in the test tube to obtain the position distribution of the solid matter. It can monitor the state of the test tube in real time and effectively ensure the stability of the reagent in the test tube during the movement process.

[0066] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of apparatuses, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a part of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than noted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based device that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0067] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for monitoring the movement of test tubes, characterized in that, Including: Step S1: Select a clamping position based on the liquid level height of the reagent in the test tube and clamp the test tube through the test tube carrying device at the corresponding clamping position; Step S2: After several test tubes on the test tube carrying device are all placed, obtain the movement influence parameters of each test tube and determine whether there is solid matter in the test tube according to the movement influence parameters. If there is no solid matter in each test tube, select the first speed as the movement speed of the test tube carrying device. If there is solid matter in any test tube, execute Step S3; Step S3: Determine whether there is a test tube in which the distance between the solid matter and the liquid surface is greater than the preset distance. If not, determine the risk characterization parameter according to the distance between the solid matter and the liquid surface and the viscosity of the reagent, and select the corresponding movement speed within the preset speed range as the movement speed of the test tube carrying device according to the risk characterization parameter. If so, select the second speed as the movement speed of the test tube carrying device; Step S4: Move the test tube carrying device to the specified position at the movement speed determined in Step S3; Wherein, the movement influence parameters include the composition and viscosity of the reagent, and the position distribution of the solid matter in the case of the existence of the solid matter. The first speed is greater than the second speed, and the interval values within the preset speed range are all less than the second speed; In the said Step S3, the risk characterization parameter is negatively correlated with the viscosity of the reagent and the distance between the solid matter and the liquid surface; Wherein, the higher the value of the risk characterization parameter, the higher the probability that the solid matter adheres to the tube wall due to the movement of the test tube carrying device; The said Step S3 further includes establishing a mapping relationship between the risk characterization parameter and the interval values within the preset speed range; Wherein, the mapping relationship satisfies that the higher the risk characterization parameter, the lower the corresponding selected interval value; 2. The test tube movement monitoring method according to claim 1, wherein In the said Step S1, the process of selecting the clamping position based on the liquid level height of the reagent in the test tube includes: Step S11: Obtain the liquid level height of the reagent in the test tube; Step S12: Determine the clamping position according to the comparison relationship between the liquid level height and the preset height: When the liquid level height is higher than the preset height, select the upper part of the test tube for clamping. When the liquid level height is lower than the preset height, select the lower part of the test tube for clamping; Step S13: Clamp the test tube through the test tube carrying device at the corresponding clamping position.

3. The test tube movement monitoring method according to claim 1, characterized in that, The determination of the distance between the solid matter and the liquid surface includes: Determine the solid matter with the highest position according to the position distribution of the solid matter; Determine the distance between the solid matter with the highest position and the liquid surface as the distance between the solid matter and the liquid surface.

4. The test tube movement monitoring method according to claim 3, wherein In the said Step S2, the process of obtaining the position distribution of the solid matter includes: Use optical detection technology to scan the vertical section of the reagent in the test tube to obtain the position distribution of the solid matter.

5. The test tube movement monitoring method according to claim 1, wherein In the said Step S2, the composition and viscosity of the reagent are obtained by identifying the reagent label.

6. A test tube carrying device, characterized in that, Applied to the test tube movement monitoring method according to any one of claims 1 - 5, including: A first carrier plate (1) and a second carrier plate (2) arranged horizontally from top to bottom in sequence. The first carrier plate (1) and the second carrier plate (2) are fixedly connected by a connecting member (3). On one side of the connecting member (3) facing away from the first carrier plate (1) and the second carrier plate (2), a gripper (4) for grasping and moving and a sliding convex portion (5) for moving in a slide rail are respectively arranged.

7. The test tube carrying device according to claim 6, wherein The first carrier board (1) and the second carrier board (2) are arranged in an array at the same position in the vertical direction with a plurality of through holes (6) matching the caliber of the test tubes, and clamping members (7) for fixing the test tubes are provided below the through holes (6).

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