An apparatus and method for automatically identifying test tube types

Abstract

The application relates to a device and a method for automatically identifying the type of a test tube, the device comprising an emergency warehouse, a fixed light emitting coupling; the emergency warehouse is sequentially provided with a peripheral blood placing groove, a whole blood placing groove and a bullet head placing groove from front to back, and the peripheral blood placing groove, the whole blood placing groove and the bullet head placing groove are respectively used for placing corresponding test tubes; a vibration motor is arranged at a position corresponding to the bottom of the peripheral blood placing groove in the emergency warehouse, and an induction mechanism for triggering emergency stop and error reporting when the whole blood placing groove is placed with a peripheral blood test tube is arranged at a position corresponding to the whole blood placing groove in the emergency warehouse; the fixed light emitting coupling is arranged on one side in front of the emergency warehouse, and whether test tubes are placed in the peripheral blood placing groove, the whole blood placing groove and the bullet head placing groove is detected in the process that a mechanical arm carries the emergency warehouse to move forward. The application has the beneficial effects that: 1. the degree of intelligence is high, and the operation efficiency is obviously improved; 2. human errors are avoided, and the reliability of the detection result is high; 3. the man-machine interaction is simplified, and the learning and using costs are extremely low.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and specifically to a device and method for automatically identifying test tube types. Background Technology

[0002] Currently, when performing single-sample blood testing with a blood cell analyzer, doctors need to confirm the corresponding mode settings each time, such as the commonly used capillary blood mode and whole blood mode. Incorrect settings will result in errors or empty sample processing, wasting doctors' time and increasing their learning costs. The current solution is to manually set the mode, and the specific operation method is as follows:

[0003] 1. Manually place the test tube (capillary blood / whole blood / bullet-shaped) into the emergency room;

[0004] 2. Tap the corresponding mode in the screen settings to confirm;

[0005] 3. Use the on-screen button or physical button on the motor for emergency sampling.

[0006] Testing each sample requires observing whether the settings on the screen are correct, and the following problems are prone to occur:

[0007] 1. Doctors need to check and confirm the current mode each time to ensure it is correct.

[0008] 2. Incorrect mode settings may lead to errors, wasted time, or invalid sample data.

[0009] 3. The frequent screen taps required to switch between peripheral blood, whole blood, and bullet heads increase the workload. Summary of the Invention

[0010] In summary, to overcome the aforementioned problems in testing samples under emergency mode, while improving automation and reducing labor costs, the technical problem to be solved by this invention is to provide a device and method for automatically identifying test tube types. This solves the problem of needing to view the screen configuration information to confirm each sample, preventing sampling due to mismatch between the placement position and the screen information; it also solves the problem of needing to manually configure and switch modes in conventional mode, preventing errors in manual configuration that lead to inaccurate sample data or errors, resulting in wasted time and costs due to re-placement.

[0011] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A device for automatically identifying test tube types includes an emergency chamber and a fixed transmitting optocoupler; the emergency chamber is provided with a peripheral blood placement slot, a whole blood placement slot and a bullet-shaped placement slot in sequence, the peripheral blood placement slot, the whole blood placement slot and the bullet-shaped placement slot are respectively used to place peripheral blood test tubes, whole blood test tubes and bullet-shaped test tubes; a vibration motor for mixing peripheral blood is provided in the emergency chamber at the position corresponding to the bottom of the peripheral blood placement slot, and a sensing mechanism for triggering an emergency stop and reporting an error when a peripheral blood test tube is placed in the whole blood placement slot is provided in the emergency chamber at the position corresponding to the whole blood placement slot;

[0012] The fixed photocoupler is located on one side in front of the emergency chamber and detects whether test tubes are placed in the peripheral blood placement slot, the whole blood placement slot, and the bullet placement slot during the forward movement of the emergency chamber carried by the robotic arm.

[0013] Based on the above technical solution, the present invention can be further improved as follows:

[0014] Furthermore, the sensing mechanism includes a spring, a baffle, a connecting block, and a detection optocoupler; the spring is vertically disposed inside the emergency compartment and at the position corresponding to the bottom of the whole blood placement slot; a vertical groove is provided on the side wall of the emergency compartment corresponding to the position of the spring; the baffle is disposed outside the emergency compartment and at the position corresponding to the groove; one end of the connecting block is fixedly connected to the top of the spring, and the other end of the connecting block is fixedly connected to the baffle; the detection optocoupler is disposed on one side below the baffle.

[0015] Furthermore, a soft lever is provided at the end of the fixed transmitting optocoupler near the emergency compartment.

[0016] Furthermore, it also includes a microcontroller, which is electrically connected to the fixed transmitting optocoupler and the detection optocoupler respectively.

[0017] The present invention also provides a method for automatically identifying test tube types, for use with the aforementioned device for automatically identifying test tube types, the method comprising the following steps:

[0018] Step 1, Receive Automatic Recognition and Counting Command: After system initialization, the microcontroller receives the automatic recognition and counting start command issued by the user via the touch screen or physical button;

[0019] Step 2, dispatching the emergency chamber to the predetermined work station: After receiving the instruction, the microcontroller drives the robotic arm to move the emergency chamber with the sampling needle forward and accurately position it to the preset initial detection work station sequence.

[0020] Step 3, positioning to the capillary blood placement tank: After the emergency chamber enters the predetermined workstation sequence, it is transported to the first preset testing workstation, namely the capillary blood placement tank, and precisely aligned.

[0021] Step 4, determine if there are test tubes in the peripheral blood placement tank: After the emergency room arrives at the peripheral blood placement tank detection station, the microcontroller collects and filters the level signal of the fixed transmitting optocoupler. A high level indicates that there are no test tubes in the peripheral blood placement tank, and a low level indicates that there are test tubes in the peripheral blood placement tank.

[0022] Step 5, move to the whole blood placement tank: If there are test tubes in the capillary blood placement tank, proceed with the step; if there are no test tubes in the capillary blood placement tank, the microcontroller will dispatch the emergency chamber to leave the station and move forward to the next preset testing station, which is the whole blood placement tank.

[0023] Step 6, determine if there are test tubes in the whole blood placement tank: After the emergency room arrives at the whole blood placement tank detection station, the microcontroller collects the fixed transmitting optocoupler level signal to determine whether there are test tubes in the whole blood placement tank;

[0024] Step 7, start needle sampling and check the status of the baffle: If there is a test tube in the whole blood placement tank, the microcontroller controls the sampling needle to go down and sample, and at the same time monitors in real time whether the baffle is blocking the detection optocoupler to determine whether the needle is blocked;

[0025] Step 8, determine if the baffle is blocking the descent: the microcontroller determines whether the needle is obstructed based on whether the baffle is blocking the optical coupler;

[0026] Step 9, Emergency Stop and Needle Retraction Error Report: If it is determined that the needle insertion is obstructed, the system will immediately interrupt the operation, stop the machine, retract the needle, trigger an audible and visual alarm, and display an error message;

[0027] Step 10, move to the bullet placement slot: If there are no test tubes in the whole blood placement slot, the microcontroller will schedule the emergency chamber to continue moving forward until it reaches the last preset testing station, namely the bullet placement slot.

[0028] Step 11, Needle counting: The microcontroller controls the sampling needle to count samples.

[0029] Step 12, counting ends, needle retraction and emergency chamber pop-out: After the counting is completed, the microcontroller controls the sampling needle to retract and simultaneously pops out the emergency chamber to facilitate sample retrieval and preparation for the next process.

[0030] The beneficial effects of this invention are: 1. High level of intelligence, significantly improved operating efficiency; 2. Avoidance of human error, high reliability of detection results; 3. Simplified human-computer interaction, extremely low learning and usage costs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the device described in this invention (excluding components such as the detection optocoupler).

[0032] Figure 2 This is a schematic diagram of the device described in this invention after being cut open in the peripheral blood placement tank and the whole blood placement tank;

[0033] Figure 3 This is a schematic diagram of the device described in this invention after being cut open in the whole blood placement tank;

[0034] Figure 4 This is a schematic diagram of the structure of a peripheral blood test tube;

[0035] Figure 5 This is a schematic diagram of the structure of a whole blood test tube;

[0036] Figure 6 This is a schematic diagram of the structure of a bullet-shaped test tube;

[0037] Figure 7 This is a flowchart illustrating the method described in this invention.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1. Emergency chamber; 2. Fixed transmitting optocoupler; 3. Peripheral blood placement tank; 4. Whole blood placement tank; 5. Bullet-shaped placement tank; 6. Peripheral blood test tube; 7. Whole blood test tube; 8. Bullet-shaped test tube; 9. Vibration motor; 10. Spring; 11. Baffle; 12. Connecting block; 13. Detection optocoupler; 14. Slide groove; 15. Soft lever. Detailed Implementation

[0040] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0041] like Figure 1 As shown, an automatic test tube type identification device includes an emergency chamber 1 and a fixed transmitting optical coupler 2. The emergency chamber 1 has a peripheral blood placement slot 3, a whole blood placement slot 4, and a bullet-shaped tube placement slot 5 arranged sequentially front to back. The peripheral blood placement slot 3, the whole blood placement slot 4, and the bullet-shaped tube placement slot 5 are respectively matched to the structures of peripheral blood test tubes 6, whole blood test tubes 7, and bullet-shaped test tubes 8, and are used to place these tubes respectively. Figure 2 As shown, a vibration motor 9 for mixing capillary blood is provided inside the emergency chamber 1 at the position corresponding to the bottom of the capillary blood placement tank 3. A sensing mechanism is provided inside the emergency chamber 1 at the position corresponding to the whole blood placement tank 4 to trigger an emergency stop and report an error when a capillary blood test tube 6 is placed in the whole blood placement tank 4.

[0042] The device also includes a microcontroller, which is electrically connected to the fixed transmitting optocoupler 2 and the detection optocoupler 13, respectively.

[0043] like Figure 3 As shown, the sensing mechanism includes a spring 10, a baffle 11, a connecting block 12, and a detection optocoupler 13. The spring 10 is vertically positioned inside the emergency chamber 1, corresponding to the bottom of the whole blood placement slot 4. A vertical groove 14 is provided on the side wall of the emergency chamber 1 corresponding to the position of the spring 10. The baffle 11 is positioned outside the emergency chamber 1, corresponding to the groove 14. One end of the connecting block 12 is fixedly connected to the top of the spring 10, and the other end of the connecting block 12 is fixedly connected to the baffle 11. The detection optocoupler 13 is located on the side below the baffle 11.

[0044] The fixed transmitting optocoupler 2 is positioned on the front side of the emergency chamber 1 and detects whether test tubes are placed in the peripheral blood placement slot 3, the whole blood placement slot 4, and the bullet-shaped placement slot 5 during the forward movement of the emergency chamber 1 carried by the robotic arm. A soft lever 15 is provided at the end of the fixed transmitting optocoupler 2 closest to the emergency chamber 1. The fixed transmitting optocoupler 2 is fixed to the front side of the emergency chamber 1 and does not move with the emergency chamber 1. When the emergency chamber 1 moves forward, if there is a test tube in the placement slot, the test tube will move forward with the emergency chamber 1 and push the soft lever 15 forward. After being pushed forward, the soft lever 15 will curl forward and block the sensing end of the fixed transmitting optocoupler 2. After being blocked, the fixed transmitting optocoupler 2 will send an electrical signal to the microcontroller. The microcontroller can determine whether there is a test tube in the corresponding test tube slot based on the electrical signal. When it is determined that there is a test tube in the corresponding test tube slot, the INC will perform a needle sampling calculation.

[0045] like Figure 4-6 As shown, the bullet-shaped test tube 8 is lower and smaller in height and size compared to the capillary blood test tube 6 and the whole blood test tube 7, and it is made of plastic. The capillary blood test tube 6 and the whole blood test tube 7 have the same height, but the whole blood test tube 7 is made of glass with a rounded bottom, while the capillary blood test tube 6 is made of plastic with a through-hole bottom. Therefore, the capillary blood test tube 6 allows the vibrating motor 9 to penetrate deeper for mixing, and its needle insertion height is also different from that of the whole blood test tube 7, which facilitates subsequent logical judgment.

[0046] The doctor can place the capillary blood tube 6, whole blood tube 7, and bullet-shaped tube 8 into the capillary blood placement slot 3, whole blood placement slot 4, and bullet-shaped tube placement slot 5, respectively. Because the shapes of these tubes are inconsistent, whole blood tube 7 cannot be placed in capillary blood placement slot 3. This is because capillary blood placement slot 3 has a protruding vibrating motor 9 at its bottom, and the bottom of whole blood tube 7 is not a through-hole structure, so it cannot be placed in capillary blood placement slot 3. Capillary blood tube 6 can be placed in whole blood placement slot 4, but because the bottom of capillary blood tube 6 is a through-hole structure, the height at which capillary blood tube 6 touches the bottom is higher than that of whole blood tube 7. Therefore, if the capillary blood tube 6 is placed into the whole blood placement slot 4, since the needle height at the detection station in the whole blood placement slot 4 is by default the needle height of the whole blood tube 7, the needle will press down into the capillary blood tube 6. After the capillary blood tube 6 is pressed down, it will compress the spring 10 at the bottom of the whole blood placement slot 4. After the spring 10 is compressed, it will drive the baffle 11 to move downward through the connecting block. After the baffle 11 moves down, it will block the detection optocoupler 13 on the lower side. After the detection optocoupler 13 is blocked, it will also send an electrical signal to the microcontroller, which will then control an emergency stop and report an error. The bullet-shaped placement slot 5 is smaller than the capillary blood placement slot 3 and the whole blood placement slot 4, making it easy for doctors to identify. That is, if the bullet-shaped tube 8 is mistakenly placed in another slot or another tube is mistakenly placed in the bullet-shaped placement slot 5, it will be easy to detect.

[0047] The bullet-shaped test tube 8 is easily placed into the bullet-shaped placement slot 5. The whole blood test tube 7 cannot be placed into the capillary blood placement slot 3 and is also not easily placed into the bullet-shaped placement slot 5; that is, the whole blood test tube 7 is also easily placed into the whole blood placement slot 4. The capillary blood test tube 6 is also not easily placed into the bullet-shaped placement slot 5. Therefore, the only possible error is if the capillary blood test tube 6 is mistakenly placed into the whole blood placement slot 4. If the capillary blood test tube 6 is mistakenly placed into the whole blood placement slot 4, the microcontroller will receive an abnormal signal during needle sampling, triggering an emergency stop and an error message, thus ensuring the final accuracy of sample identification.

[0048] like Figure 7 As shown, an automatic test tube type identification method is implemented in a microprocessor (MCU). The core of this method involves a robotic arm carrying an emergency chamber 1 that sequentially traverses multiple pre-set sample placement slots (capillary blood placement slot 3, whole blood placement slot 4, and bullet-shaped placement slot 5), while simultaneously detecting the occlusion status of the soft lever 15 of the fixed photocoupler 2. This dynamically determines whether a valid test tube is present in the sample placement slot, thus intelligently deciding whether to perform a needle sampling operation. The method includes the following steps:

[0049] Step 1, Receive Automatic Identification and Counting Command (201): After system initialization, the microcontroller receives the automatic identification and counting start command issued by the user through the touch screen or physical button. This is the process trigger signal.

[0050] Step 2, dispatching the emergency chamber 1 to the predetermined work station (202): After receiving the instruction, the microcontroller drives the robotic arm to move the emergency chamber 1 with the sampling needle forward and accurately position it to the preset initial detection work station sequence.

[0051] Step 3, positioning to peripheral blood placement tank 3 (203): After the emergency chamber 1 enters the predetermined work station sequence, it is transported to the first preset testing work station, namely peripheral blood placement tank 3, and precisely aligned.

[0052] Step 4, determine if there are test tubes in the peripheral blood placement tank 3 (204): After the emergency chamber 1 arrives at the detection station of the peripheral blood placement tank 3, the microcontroller collects and filters the level signal of the fixed transmitting optocoupler 2. A high level indicates that there are no test tubes in the peripheral blood placement tank 3, and a low level indicates that there are test tubes in the peripheral blood placement tank 3. This is the first decision node.

[0053] Step 5, move to whole blood placement tank 4 (205): If there are test tubes in peripheral blood placement tank 3, proceed to step 11; if there are no test tubes in peripheral blood placement tank 3, the microcontroller schedules the emergency chamber 1 to leave the station and move forward to the next preset testing station, namely whole blood placement tank 4.

[0054] Step 6, determine if there are test tubes in the whole blood placement tank 4 (206): After the emergency chamber 1 arrives at the whole blood placement tank 4 detection station, the microcontroller collects the level signal of the fixed transmitting optocoupler 2 to determine whether there are test tubes in the whole blood placement tank 4. This serves as a secondary confirmation node to prevent misjudgment due to momentary interference.

[0055] Step 7, start needle sampling and check the status of the baffle 11 (207): If there is a test tube in the whole blood placement tank 4, the microcontroller controls the sampling needle to sample, and at the same time monitors in real time whether the baffle 11 blocks the detection optocoupler 13 to determine whether the needle is blocked.

[0056] Step 8, determine whether the baffle is descending and blocking (208): The microcontroller determines whether the needle is blocked based on whether the baffle 11 is blocking the optical coupler 13. This is the core interlock judgment node to ensure the safety of the equipment and the sample.

[0057] Step 9, Emergency Stop and Needle Retraction Error Report (209): If it is determined that the needle insertion is obstructed, the system will immediately interrupt the operation and stop the needle retraction, triggering an audible and visual alarm and displaying an error message.

[0058] Step 10, move to bullet placement slot 5 (210): If there are no test tubes in whole blood placement slot 4, the microcontroller schedules the emergency chamber 1 to continue moving forward to the last preset testing station, namely bullet placement slot 5.

[0059] Step 11, Needle Counting (211): This step is triggered in two situations: one is that there is a test tube in the peripheral blood placement slot 3, and the other is that after the emergency chamber 1 is moved to the bullet placement slot 5 detection station, the microcontroller controls the sampling needle to be inserted to count the samples.

[0060] Step 12, counting ends, needle retraction and emergency chamber 1 pops out (212): After the needle counting is completed, the microcontroller controls the sampling needle to retract and at the same time pops out the emergency chamber 1 to facilitate the retrieval and placement of samples, in preparation for the next process.

[0061] In summary, compared with the prior art, the device and method for automatically identifying test tube types provided by the present invention have the following significant advantages:

[0062] 1. High degree of intelligence, significantly improved operational efficiency.

[0063] Existing technologies typically require operators to manually select the test tube type on the instrument interface before each test, which is cumbersome. This invention introduces a fully automated test tube identification and scheduling mechanism. Operators only need to configure and activate the automatic identification mode initially; subsequent uses simply require placing the test tubes in the emergency compartment and clicking the start button. The system automatically completes the entire process of test tube type identification, positioning, and sampling, freeing operators from repetitive configuration tasks, significantly reducing sample pretreatment time, and increasing testing throughput.

[0064] 2. Avoids human error, ensuring high reliability of test results.

[0065] Existing technologies heavily rely on operator experience and attention, making them prone to human error such as "incorrect test tube type selection," which can lead to abnormal test results or instrument malfunctions and shutdowns. This invention, by combining real-time hardware sensor sensing with automatic software logic, completely avoids data reliability issues caused by subjective human selection errors. It ensures a high degree of matching between the "sample-test tube-detection mode" from the source, significantly improving the accuracy and reliability of the test data.

[0066] 3. Simplified human-computer interaction, with extremely low learning and usage costs.

[0067] Existing technologies involve complex operating procedures and require extensive operator training. This invention, through an innovative combination of physical structure design and intelligent logic judgment, greatly simplifies human-computer interaction.

[0068] Physical error prevention design: Physical error prevention is achieved through differentiated slot structures (such as the physical dimensions of the capillary blood placement slot 3, whole blood placement slot 4, and bullet-shaped placement slot 5), which allows operators to easily identify the correct slots by intuition when placing test tubes, thus physically avoiding the possibility of whole blood test tubes being mistakenly placed into the designated slots.

[0069] Intelligent fault-tolerant processing: For test tubes with similar shapes (such as capillary blood test tube 6 which can be placed in whole blood placement slot 4), the system does not simply reject them, but performs soft verification through real-time sampling monitoring downstream (such as the emission photocoupler status of the baffle 11 and the detection photocoupler 13 fixed on the lower side). Once an abnormal needle insertion is detected (such as test tube height mismatch), the system immediately triggers a safety interlock to stop the machine and report an error, thereby simplifying the operation while ensuring the final correctness of sample identification.

[0070] This design allows operators to focus on simple placement actions without having to memorize complex rules, significantly reducing training costs and the barrier to entry.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for automatically identifying test tube types, characterized in that, The device includes an emergency chamber (1) and a fixed photocoupler (2). The emergency chamber (1) is provided with a peripheral blood placement slot (3), a whole blood placement slot (4) and a bullet placement slot (5) in sequence. The peripheral blood placement slot (3), the whole blood placement slot (4) and the bullet placement slot (5) are used to place peripheral blood test tubes (6), whole blood test tubes (7) and bullet test tubes (8) respectively. A vibration motor (9) for mixing peripheral blood is provided in the emergency chamber (1) at the bottom of the peripheral blood placement slot (3). A sensing mechanism that triggers an emergency stop and reports an error when a peripheral blood test tube (6) is placed in the whole blood placement slot (4) is provided in the emergency chamber (1) at the position corresponding to the whole blood placement slot (4). The fixed photocoupler (2) is located on the front side of the emergency chamber (1) and detects whether test tubes are placed in the peripheral blood placement slot (3), the whole blood placement slot (4) and the bullet placement slot (5) during the process of the robotic arm carrying the emergency chamber (1) forward.

2. The device for automatically identifying test tube types according to claim 1, characterized in that, The sensing mechanism includes a spring (10), a baffle (11), a connecting block (12), and a detection optocoupler (13); the spring (10) is vertically arranged inside the emergency chamber (1) and at the position corresponding to the bottom of the whole blood placement slot (4); a sliding groove (14) is vertically provided on the side wall of the emergency chamber (1) at the position corresponding to the spring (10); the baffle (11) is arranged outside the emergency chamber (1) and at the position corresponding to the sliding groove (14); one end of the connecting block (12) is fixedly connected to the top of the spring (10), and the other end of the connecting block (12) is fixedly connected to the baffle (11); the detection optocoupler (13) is arranged on one side below the baffle (11).

3. The device for automatically identifying test tube types according to claim 1, characterized in that, The fixed transmitting optocoupler (2) has a soft lever (15) at one end near the emergency compartment (1).

4. The device for automatically identifying test tube types according to claim 1, characterized in that, It also includes a microcontroller, which is electrically connected to the fixed transmitting optocoupler (2) and the detection optocoupler (13), respectively.

5. A method for automatically identifying test tube types, characterized in that, For an apparatus for automatically identifying test tube types as described in any one of claims 1-4, the method comprises the following steps: Step 1, Receive Automatic Recognition and Counting Command: After system initialization, the microcontroller receives the automatic recognition and counting start command issued by the user via the touch screen or physical button; Step 2, dispatch the emergency chamber (1) to the predetermined work station: after receiving the instruction, the microcontroller drives the robotic arm to move the emergency chamber (1) with the sampling needle forward and accurately position it to the preset initial detection work station sequence; Step 3, positioning to the peripheral blood placement tank (3): After the emergency room (1) enters the predetermined work station sequence, it is transported to the first preset detection work station, namely the peripheral blood placement tank 3, and precisely aligned; Step 4, determine whether there are test tubes in the peripheral blood placement tank (3): After the emergency room (1) arrives at the peripheral blood placement tank (3) detection station, the microcontroller collects the level signal of the fixed transmitting optocoupler (2) and filters it. A high level indicates that there are no test tubes in the peripheral blood placement tank (3), and a low level indicates that there are test tubes in the peripheral blood placement tank (3). Step 5, move to whole blood placement tank (4): If there is a test tube in the peripheral blood placement tank (3), then proceed to step 11; if there is no test tube in the peripheral blood placement tank (3), the microcontroller schedules the emergency chamber (1) to leave the station and move forward to the next preset testing station, namely the whole blood placement tank (4). Step 6, determine whether there are test tubes in the whole blood placement tank (4): After the emergency room (1) arrives at the whole blood placement tank (4) detection station, the microcontroller collects the level signal of the fixed transmitting optocoupler (2) to determine whether there are test tubes in the whole blood placement tank (4); Step 7, start needle sampling and check the status of the baffle (11): If there is a test tube in the whole blood placement tank (4), the microcontroller controls the sampling needle to sample, and at the same time monitors whether the baffle (11) blocks the detection optocoupler 13 in real time to determine whether the needle is blocked; Step 8, determine whether the baffle (11) is blocking: the microcontroller determines whether the needle is blocked by the detection optocoupler (13) based on whether the baffle (11) is blocking; Step 9, Emergency Stop and Needle Retraction Error Report: If it is determined that the needle insertion is obstructed, the system will immediately interrupt the operation, stop the machine, retract the needle, trigger an audible and visual alarm, and display an error message; Step 10, move to bullet placement slot (5): If there are no test tubes in the whole blood placement slot (4), the microcontroller schedules the emergency chamber (1) to continue moving forward to the last preset testing station, namely the bullet placement slot (5). Step 11, Needle counting: The microcontroller controls the sampling needle to count samples. Step 12, counting ends, needle retraction and emergency chamber pop-out (1): After the needle counting is completed, the microcontroller controls the sampling needle to retract and at the same time pops out the emergency chamber (1) to facilitate sample retrieval and preparation for the next process.

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