Storage system and method for calibration data of flow acquisition system of anaesthesia machine and anaesthesia machine

Abstract

The invention relates to the technical field of medical instruments, in particular to a storage system and method for calibration data of a flow acquisition system of an anaesthesia machine and the anaesthesia machine. The flow acquisition system comprises a flow probe (1), a first sampling pipeline (2), a second sampling pipeline (3), a differential pressure sensor (4) and a main control chip (5), the storage system is positioned between the anesthesia machine main control board part (A) and the anesthesia machine loop part (B), comprises a first differential pressure conduction port (6) and is used for connecting the first sampling pipeline (2) and the differential pressure sensor (4); the second differential pressure conduction port (7) is used for connecting the second sampling pipeline (3) and the differential pressure sensor (4); the storage chip (8) and the main control chip (5) are separately designed, and the storage chip (8) is used for storing historical calibration data of the flow probe (1) and calibration data generated by the main control chip (5); and the data transmission component is used for transmitting the calibration data of the main control chip (5) to the storage chip (8).

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a storage system and method for calibration data of an anesthesia machine flow acquisition system, and an anesthesia machine. Background Art

[0002] In the monitoring system of the anesthesia machine, the flow acquisition system plays a vital role. It is mainly responsible for accurately monitoring the gas flow to ensure that the gas flow is controlled within a predetermined range during anesthesia, thereby ensuring the safety of the user. The system is usually composed of main components such as a flow probe 1, a differential pressure sampling pipeline, and a differential pressure sensor 4.

[0003] Specifically, the flow probe 1 is one of the core components of the flow acquisition system. Its main function is to generate a corresponding pressure difference inside the probe through the flowing gas when the gas flow passes through. The flow probe 1 is connected to the pressure differential sampling interface. When the gas flows through, the interaction between the gas flow and the internal structure of the probe forms a pressure differential proportional to the flow. The pressure differential signal is transmitted to the pressure differential sensor 4 through the connected sampling pipeline. The pressure differential sensor 4 is responsible for converting the received pressure differential signal into a voltage signal, and usually uses pressure sensor technology to convert the tiny pressure differential into a measurable voltage value. There is a certain linear relationship between this voltage value and the flow rate, so the gas flow value can be accurately calculated by establishing a corresponding relationship curve between the flow rate and the voltage (i.e., the flow-voltage curve).

[0004] In practical applications, the main control chip 5 performs flow calibration by recording the flow-voltage curve to ensure that the flow acquisition system can accurately monitor the gas flow. In the real-time monitoring of the gas flow, the main control chip 5 calculates the current flow in real time based on the data query of the flow-voltage curve. The accuracy of this process directly affects the working state of the anesthesia machine. Therefore, the flow acquisition system is not only a monitoring tool in the anesthesia machine, but also a key technical component to ensure anesthesia safety and optimize anesthesia management. Through the precise monitoring of the flow acquisition system, the anesthesia machine can adjust the gas flow in real time to avoid risks caused by improper flow, such as abnormal anesthetic gas supply and other problems. The innovation and improvement of this system has promoted the intelligent and high-precision development of anesthesia equipment and provided a more reliable and safe technical guarantee for clinical anesthesia.

[0005] The applicant found that the existing calibration method and system of flow collection system have certain limitations, which are specifically manifested in the following aspects:

[0006] Calibration data is bound to the main control board: Current flow acquisition systems usually store the calibration data of the flow probe 1 in the storage chip 8 of the main control board, which means that the calibration data is tightly bound to the main control board. Once the main control board fails or needs to be replaced, the system must be recalibrated to ensure that the newly replaced main control board matches the original flow probe 1. This method of relying on calibration data stored in the main control board not only increases maintenance costs, but also brings additional operational complexity. Especially when the main control board needs to be replaced frequently, the recalibration process is particularly cumbersome and time-consuming.

[0007] The calibration data acquisition process relies on calibration after the whole machine is assembled: the current technology requires that after the whole anesthesia machine is assembled, the main control board and flow acquisition system must be calibrated to obtain the calibration data. This requirement leads to inconvenience in the production process, because the acquisition of calibration data is closely related to the assembly progress of the whole machine. If any problems occur during the assembly process, it may delay the acquisition of calibration data, thereby affecting production efficiency. In addition, this also means that the calibration process can only be carried out after the equipment is completed, and it is impossible to calibrate in advance at the level of individual components, which limits the flexibility of production and maintenance.

[0008] These shortcomings not only increase the production and maintenance costs of the equipment, but also reduce the flexibility and stability of the calibration method and system. There is an urgent need for a more efficient, flexible and main control board-independent calibration method and system to optimize the existing technology. Summary of the invention

[0009] The object of the present invention is to overcome the above-mentioned defects of the prior art, thereby providing a storage system and method for calibration data of an anesthesia machine flow acquisition system and an anesthesia machine.

[0010] In order to solve the above technical problems, the technical solution of the present invention provides a storage system for calibration data of an anesthesia machine flow acquisition system, the flow acquisition system comprising:

[0011] Flow probe 1, connected to the anesthesia machine circuit part B;

[0012] A first sampling pipeline 2 and a second sampling pipeline 3 are respectively connected to the flow probe 1;

[0013] The pressure difference sensor 4 is used to convert the flow pressure difference between the first sampling pipeline 2 and the second sampling pipeline 3 into a pressure difference signal, and send it to the main control chip 5;

[0014] The main control chip 5 is arranged in the main control board part A of the anesthesia machine, and is used to calibrate the flow probe 1 based on the pressure difference signal and generate calibration data;

[0015] The storage system is located between the main control board part A of the anesthesia machine and the circuit part B of the anesthesia machine, and includes:

[0016] A first differential pressure conducting port 6, used for connecting the first sampling pipeline 2 and the differential pressure sensor 4;

[0017] A second differential pressure conducting port 7, used for connecting the second sampling pipeline 3 and the differential pressure sensor 4;

[0018] The storage chip 8 is designed separately from the main control chip 5 and is used to store the historical calibration data of the flow probe 1 and the calibration data generated by the main control chip 5;

[0019] The data transmission component is used to transmit the calibration data of the main control chip 5 to the storage chip 8.

[0020] As an improvement of the above system, the data transmission component includes: a communication pin probe 9 and a data transmission line 10.

[0021] As an improvement to the above system, the data transmission component supports SPI (Serial Peripheral Interface) communication.

[0022] As an improvement of the above system, the storage system also includes: a flow probe interface board 11, which is fixedly connected to the first pressure differential conduction port 6, the second pressure differential conduction port 7 and the storage chip 8 respectively, and is used to assemble the first pressure differential conduction port 6, the second pressure differential conduction port 7 and the storage chip 8.

[0023] As an improvement of the above system, the flow probe interface board 11 is also fixedly connected to the communication pin probe 9 .

[0024] As an improvement to the above system, the data transmission line 10 and the communication pin probe 9 are connected by elastic pressing.

[0025] To achieve another object of the present invention, the present invention further provides a method for storing calibration data of an anesthesia machine flow acquisition system, which is implemented based on the above-mentioned storage system for calibration data of the anesthesia machine flow acquisition system, and includes:

[0026] Connect the flow acquisition system and the storage system; initialize the calibration function of flow probe 1;

[0027] Gas flow rates of different flow rates are input into the flow probe 1, and the pressure differences corresponding to each gas flow rate are collected through the pressure difference sensor 4, and the obtained pressure differences are sent to the main control chip 5; a data curve of the flow-voltage signal is established through the main control chip 5, and a monotonicity check is completed on the data curve to generate calibration data, and the calibration data is sent to the storage chip 8 for storage through the data transmission component; or, the main control chip 5 retrieves the historical calibration data in the storage chip 8, and a monotonicity check is completed based on the historical calibration data, to generate calibration data, and the calibration data is sent to the storage chip 8 for storage through the data transmission component.

[0028] To achieve another object of the present invention, the present invention also provides an anesthesia machine, which executes the storage method of the calibration data of the flow acquisition system of the anesthesia machine

[0029] Compared with the prior art, the advantage of the present invention is that the present invention effectively solves many deficiencies in the prior art by introducing an independently stored calibration data management method, a flexible calibration data transmission mechanism, and intelligent inspection of the calibration process and retrieval of historical data. In particular, it has significant innovative advantages in improving equipment maintenance efficiency, ensuring calibration accuracy, and enhancing system flexibility and reliability. These advantages enable the present invention to provide a more efficient, accurate and reliable solution in the calibration management of the anesthesia machine flow acquisition system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a storage system for calibration data of an anesthesia machine flow acquisition system provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0031] The technical solution provided by the present invention is further illustrated below in conjunction with embodiments.

[0032] Example 1

[0033] like Figure 1 As shown, this embodiment provides a storage system for calibration data of an anesthesia machine flow acquisition system, and the flow acquisition system includes:

[0034] Flow probe 1, connected to the anesthesia machine circuit part B;

[0035] A first sampling pipeline 2 and a second sampling pipeline 3 are respectively connected to the flow probe 1;

[0036] The pressure difference sensor 4 is used to convert the flow pressure difference between the first sampling pipeline 2 and the second sampling pipeline 3 into a pressure difference signal, and send it to the main control chip 5;

[0037] The main control chip 5 is arranged in the main control board part A of the anesthesia machine, and is used to calibrate the flow probe 1 based on the pressure difference signal and generate calibration data;

[0038] The storage system is located between the main control board part A of the anesthesia machine and the circuit part B of the anesthesia machine, and includes:

[0039] A first differential pressure conducting port 6, used for connecting the first sampling pipeline 2 and the differential pressure sensor 4;

[0040] A second differential pressure conducting port 7, used for connecting the second sampling pipeline 3 and the differential pressure sensor 4;

[0041] The storage chip 8 is designed separately from the main control chip 5 and is used to store the historical calibration data of the flow probe 1 and the calibration data generated by the main control chip 5;

[0042] The data transmission component is used to transmit the calibration data of the main control chip 5 to the storage chip 8.

[0043] Specifically, the data transmission component includes: a communication pin probe 9 and a data transmission line 10 .

[0044] Specifically, the data transmission component supports SPI (Serial Peripheral Interface) communication.

[0045] Specifically, the storage system further includes: a flow probe interface board 11, which is fixedly connected to the first pressure difference conduction port 6, the second pressure difference conduction port 7 and the storage chip 8 respectively, and is used to assemble the first pressure difference conduction port 6, the second pressure difference conduction port 7 and the storage chip 8.

[0046] Specifically, the flow probe interface board 11 is also fixedly connected to the communication pin probe 9 .

[0047] Specifically, the data transmission line 10 and the communication pin probe 9 are connected by elastic pressing.

[0048] Example 2

[0049] This embodiment provides a method for storing calibration data of an anesthesia machine flow collection system, which is implemented based on the storage system for calibration data of an anesthesia machine flow collection system provided in Embodiment 1, and includes:

[0050] Connect the flow acquisition system and the storage system; initialize the calibration function of flow probe 1;

[0051] Gas flow rates of different flow rates are input into the flow probe 1, and the pressure differences corresponding to each gas flow rate are collected through the pressure difference sensor 4, and the obtained pressure differences are sent to the main control chip 5; a data curve of the flow-voltage signal is established through the main control chip 5, and a monotonicity check is completed on the data curve to generate calibration data, and the calibration data is sent to the storage chip 8 for storage through the data transmission component; or, the main control chip 5 retrieves the historical calibration data in the storage chip 8, and a monotonicity check is completed based on the historical calibration data, to generate calibration data, and the calibration data is sent to the storage chip 8 for storage through the data transmission component.

[0052] Example 3

[0053] This embodiment provides an anesthesia machine, which executes the method for storing calibration data of the flow acquisition system of the anesthesia machine provided in Embodiment 2.

[0054] The technical solution proposed in the present invention has significant advantages over the existing technical solutions and can effectively solve some key defects in the existing technology, as follows:

[0055] 1. Decoupling of calibration data and main control board:

[0056] Existing technology defects: In the existing technology, the calibration data of the flow probe is usually stored in the storage chip of the main control board, which causes the calibration data to be closely bound to the main control board. When the main control board fails or needs to be replaced, it is necessary to re-calibrate to ensure that the new main control board matches the flow probe.

[0057] Advantages of the present invention: In the present invention, the calibration data of the flow sensor is stored in an independent storage chip (i.e., the storage chip 8 in the storage system). This storage method decouples the calibration data from the main control chip. Even if the main control chip needs to be replaced or fails, it is only necessary to re-call the historical calibration data in the storage chip without re-calibration. This greatly improves the maintenance convenience of the equipment and reduces the complexity and cost of re-calibration caused by replacing the main control chip.

[0058] 2. Flexible calibration data storage and transmission mechanism:

[0059] Existing technical defects: The calibration data storage in the existing technology is closely related to the assembly of the flow collection system, and the calibration can only be performed after the whole machine is assembled. In this way, the calibration process is not only limited by the assembly time, but also cannot be calibrated at the level of a single component, which affects the flexibility of production and maintenance.

[0060] Advantages of the present invention: The present invention flexibly transmits calibration data to an independent storage chip 8 through a data transmission component (such as a communication pin probe 9 and a data transmission line 10). The calibration data can be collected and stored in the initial coordination stage of the flow probe and the main control chip. More importantly, the calibration data can be updated and adjusted based on historical calibration data, so that the calibration process no longer depends on the final assembly of the whole machine, and has greater flexibility and adaptability. This method not only improves the efficiency of calibration, but also allows calibration to be completed independently in different production links and maintenance processes.

[0061] 3. Improve the intelligence and accuracy of the calibration process:

[0062] Disadvantages of existing technology: Existing calibration methods usually rely on traditional calibration curves, which cannot flexibly handle accurate calibration under different flow conditions. Especially when there are errors or instabilities, the calibration process may not achieve the expected results.

[0063] Advantages of the present invention: In the present invention, the main control chip 5 processes the differential pressure signal collected by the differential pressure sensor 4 in real time, generates an accurate data curve of the flow-voltage signal and performs a monotonicity check on it, thereby ensuring the accuracy and consistency of the calibration data. In this way, the generation process of the calibration data is not only more intelligent, but also can effectively identify and avoid potential measurement errors, thereby improving the reliability of the calibration results. In addition, there are certain differences in the calibration curves of different flow probes 1. By forming a one-to-one relationship between the storage chip 8 and the flow probe 1, exclusive calibration data can be stored for the flow probe 1. Compared with the traditional main control chip 5 that uses the same calibration curve for different flow probes 1, the calibration accuracy is further improved.

[0064] 4. Support the retrieval and reuse of historical calibration data:

[0065] Deficiencies of existing technology: In existing technologies, once calibration data is lost or damaged, recalibration is not only complicated but also requires a lot of time and resources.

[0066] Advantages of the present invention: The present invention provides a solution based on a storage chip, which allows historical calibration data to be directly retrieved from the storage chip when needed. When a flow probe or a main control chip fails, the user can directly call the historical calibration data, avoiding the tedious steps of recalibration. This design not only optimizes the maintenance process, but also enhances the fault tolerance of the system.

[0067] 5. Efficiency and reliability of data transmission:

[0068] Deficiencies of existing technology: Traditional calibration data storage methods generally require a complex data transmission process, which may result in instability or low transmission efficiency, especially when the data volume is large.

[0069] Advantages of the present invention: The data transmission component (including the communication pin probe 9 and the data transmission line 10) in the present invention adopts the SPI (Serial Peripheral Interface) serial peripheral interface for data transmission, which is a high-speed and reliable data transmission method, and can ensure the efficient transmission of calibration data between the main control chip and the storage chip. This not only improves the overall performance of the system, but also reduces the delay and error in the data transmission process.

[0070] In summary, the present invention effectively solves many deficiencies in the prior art by introducing an independently stored calibration data management method, a flexible calibration data transmission mechanism, and intelligent inspection of the calibration process and retrieval of historical data. In particular, it has significant innovative advantages in improving equipment maintenance efficiency, ensuring calibration accuracy, and enhancing system flexibility and reliability. These advantages enable the present invention to provide a more efficient, accurate and reliable solution in the calibration management of the anesthesia machine flow acquisition system.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention and should be included in the scope of the claims of the present invention.

Claims

1. A storage system for calibration data of an anesthesia machine flow acquisition system, the flow acquisition system comprising: A flow sensor (1) connected to the anesthesia machine circuit part (B); The first sampling pipeline (2) and the second sampling pipeline (3) are respectively connected to the flow probe (1); A differential pressure sensor (4) is used to convert the flow pressure difference between the first sampling pipeline (2) and the second sampling pipeline (3) into a differential pressure signal, and send it to the main control chip (5); The main control chip (5) is arranged on the main control board part (A) of the anesthesia machine and is used to calibrate the flow probe (1) based on the pressure difference signal and generate calibration data; it is characterized in that: The storage system is located between the main control panel part (A) of the anesthesia machine and the circuit part (B) of the anesthesia machine, and includes: A first differential pressure transmission port (6) for connecting the first sampling pipeline (2) and the differential pressure sensor (4); A second differential pressure conducting port (7) for connecting the second sampling pipeline (3) and the differential pressure sensor (4); A storage chip (8) is designed separately from the main control chip (5) and is used to store historical calibration data of the flow sensor (1) and calibration data generated by the main control chip (5); A data transmission component is used to transmit the calibration data of the main control chip (5) to a storage chip (8).

2. The storage system for calibration data of the anesthesia machine flow acquisition system according to claim 1, characterized in that: The data transmission component comprises: a communication pin probe (9) and a data transmission line (10).

3. The storage system for calibration data of the anesthesia machine flow acquisition system according to claim 2, characterized in that: The data transmission component supports SPI communication.

4. The storage system for calibration data of the anesthesia machine flow acquisition system according to claim 2, characterized in that: The storage system further comprises: a flow probe interface board (11), which is fixedly connected to the first pressure difference conduction port (6), the second pressure difference conduction port (7) and the storage chip (8) respectively, and is used for assembling the first pressure difference conduction port (6), the second pressure difference conduction port (7) and the storage chip (8).

5. The storage system for calibration data of the anesthesia machine flow acquisition system according to claim 4, characterized in that: The flow probe interface board (11) is also fixedly connected to the communication pin probe (9).

6. The storage system for calibration data of the anesthesia machine flow acquisition system according to claim 2, characterized in that: The data transmission line (10) and the communication pin probe (9) are connected by elastic pressing.

7. A method for storing calibration data of an anesthesia machine flow acquisition system, implemented based on the calibration data storage system of the anesthesia machine flow acquisition system according to any one of claims 1 to 6, comprising: Connect the flow collection system and storage system; Initialize the calibration function of the flow probe (1); Gas flow rates of different flow rates are input into the flow probe (1), and the pressure differentials corresponding to the gas flow rates are collected through the pressure differential sensor (4), and the obtained pressure differentials are sent to the main control chip (5); a data curve of the flow-voltage signal is established through the main control chip (5), and a monotonicity check is performed on the data curve to generate calibration data, and the calibration data is sent to the storage chip (8) for storage through the data transmission component; or, the main control chip (5) retrieves historical calibration data from the storage chip (8), and a monotonicity check is performed based on the historical calibration data to generate calibration data, and the calibration data is sent to the storage chip (8) for storage through the data transmission component.

8. An anesthesia machine, characterized in that: Execute the method for storing calibration data of the anesthesia machine flow acquisition system as described in claim 7.

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