A system and method for storing calibration data of an anesthesia machine flow acquisition system, and an anesthesia machine.

Abstract

This invention relates to the field of medical device technology, and particularly to a storage system, method, and anesthesia machine for storing calibration data of an anesthesia machine flow acquisition system. The flow acquisition system includes: a flow probe (1), a first sampling line (2), a second sampling line (3), a differential pressure sensor (4), and a main control chip (5); the storage system is located between the main control board (A) and the circuit (B) of the anesthesia machine, including a first differential pressure conduction port (6) for connecting the first sampling line (2) and the differential pressure sensor (4); a second differential pressure conduction port (7) for connecting the second sampling line (3) and the differential pressure sensor (4); a storage chip (8), which is designed separately from the main control chip (5), for storing historical calibration data of the flow probe (1) and calibration data generated by the main control chip (5); and a data transmission component for transmitting calibration data from the main control chip (5) to the storage chip (8).

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a system and method for storing calibration data of an anesthesia machine flow acquisition system, as well as an anesthesia machine. Background Technology

[0002] In the monitoring system of anesthesia machines, the flow acquisition system plays a crucial role. It is primarily responsible for accurately monitoring gas flow to ensure that the gas flow is controlled within a predetermined range during anesthesia, thereby guaranteeing user safety. This system typically consists 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 pressure difference inside the probe as gas flows through it. The flow probe 1 is connected to the differential pressure sampling interface. When gas flows through, the interaction between the gas flow and the internal structure of the probe creates a pressure difference proportional to the flow rate. This pressure difference signal is transmitted to the differential pressure sensor 4 through the connected sampling pipeline. The differential pressure sensor 4 is responsible for converting the received pressure difference signal into a voltage signal. Typically, pressure sensor technology is used to convert a small pressure difference into a measurable voltage value. This voltage value has a certain linear relationship with the flow rate; therefore, the gas flow rate can be accurately calculated by establishing a flow rate-voltage curve.

[0004] In practical applications, the main control chip 5 calibrates the flow rate by recording the flow-voltage curve, ensuring that the flow acquisition system can accurately monitor the gas flow rate. During real-time gas flow monitoring, the main control chip 5 calculates the current flow rate in real time based on the data from the flow-voltage curve. The accuracy of this process directly affects the working status of the anesthesia machine. Therefore, the flow acquisition system is not merely a monitoring tool within the anesthesia machine, but a key technological component for ensuring anesthesia safety and optimizing anesthesia management. Through precise monitoring by the flow acquisition system, the anesthesia machine can adjust the gas flow rate in real time, avoiding risks caused by improper flow, such as abnormal anesthetic gas supply. This innovation and improvement of the system has promoted the intelligent and high-precision development of anesthesia equipment, providing more reliable and safer technical support for clinical anesthesia.

[0005] The applicant found that the existing calibration methods and systems for traffic collection have certain limitations, specifically in the following aspects:

[0006] Calibration data is tied to the main control board: Current flow acquisition systems typically store the calibration data of flow probe 1 in the storage chip 8 of the main control board. This means the calibration data is tightly bound to the main control board. If the main control board fails or needs to be replaced, the system must be recalibrated to ensure the new main control board matches the original flow probe 1. This reliance on calibration data stored on the main control board not only increases maintenance costs but also introduces additional operational complexity. The recalibration process is particularly cumbersome and time-consuming when frequent main control board replacements are required.

[0007] The calibration data acquisition process relies on calibration after the entire machine is assembled: current technology requires calibration using the main control board and flow acquisition system after the entire anesthesia machine is assembled to obtain calibration data. This requirement leads to inconvenience in the production process, as the acquisition of calibration data is closely related to the overall assembly progress. Any problems that occur during assembly may delay the acquisition of calibration data, thereby affecting production efficiency. Furthermore, this also means that the calibration process can only be carried out after the equipment is completed, and it is impossible to perform pre-calibration at the individual component level, limiting the flexibility of production and maintenance.

[0008] These drawbacks not only increase the production and maintenance costs of the equipment, but also reduce the flexibility and stability of calibration methods and systems. There is an urgent need for a more efficient, flexible calibration method and system that does not rely on the main control board to optimize existing technologies. Summary of the Invention

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

[0010] To solve the above technical problems, 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 is connected to circuit section B of the anesthesia machine;

[0012] The first sampling line 2 and the second sampling line 3 are respectively connected to the flow probe 1;

[0013] 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;

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

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

[0016] The first differential pressure transmission port 6 is used to connect the first sampling pipeline 2 and the differential pressure sensor 4;

[0017] The second differential pressure transmission port 7 is used to connect 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] A 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 to 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 to the above system, the storage system further includes: a flow probe interface board 11, which is fixedly connected to the first differential pressure transmission port 6, the second differential pressure transmission port 7 and the storage chip 8 respectively, and is used to assemble the first differential pressure transmission port 6, the second differential pressure transmission port 7 and the storage chip 8.

[0023] As an improvement to 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 a spring-loaded pressing method.

[0025] To achieve another objective of the present invention, the present invention also provides a method for storing calibration data of an anesthesia machine flow acquisition system, implemented based on the above-described storage system for calibration data of an anesthesia machine flow acquisition system, comprising:

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

[0027] Gas flow rates at different velocities are input into flow probe 1, and differential pressure sensor 4 collects the differential pressure corresponding to each gas flow rate. The obtained differential pressures are sent to main control chip 5. Main control chip 5 establishes a flow-voltage signal data curve, performs a monotonicity check on the data curve, generates calibration data, and sends the calibration data to storage chip 8 for storage through data transmission component. Alternatively, main control chip 5 retrieves historical calibration data from storage chip 8, performs a monotonicity check based on the historical calibration data, generates calibration data, and sends the calibration data to storage chip 8 for storage through data transmission component.

[0028] To achieve another objective of the present invention, the present invention also provides an anesthesia machine, and a method for storing calibration data of the anesthesia machine flow acquisition system described above.

[0029] Compared to existing technologies, the advantages of this invention lie in its ability to effectively address many shortcomings of existing technologies by introducing an independently stored calibration data management method, a flexible calibration data transmission mechanism, and intelligent checks and historical data retrieval during the calibration process. It exhibits significant innovative advantages, particularly in improving equipment maintenance efficiency, ensuring calibration accuracy, and enhancing system flexibility and reliability. These advantages enable this invention to provide a more efficient, accurate, and reliable solution for the calibration management of anesthesia machine flow acquisition systems. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the storage system for calibration data of the anesthesia machine flow acquisition system provided in Embodiment 1 of the present invention. Detailed Implementation

[0031] The technical solutions provided by the present invention will be further illustrated below with reference to the 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. The flow acquisition system includes:

[0034] Flow probe 1 is connected to circuit section B of the anesthesia machine;

[0035] The first sampling line 2 and the second sampling line 3 are respectively connected to the flow probe 1;

[0036] 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;

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

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

[0039] The first differential pressure transmission port 6 is used to connect the first sampling pipeline 2 and the differential pressure sensor 4;

[0040] The second differential pressure transmission port 7 is used to connect 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] A 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 differential pressure transmission port 6, the second differential pressure transmission port 7 and the storage chip 8 respectively, and is used to assemble the first differential pressure transmission port 6, the second differential pressure transmission 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 a spring-loaded pressing method.

[0048] Example 2

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

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

[0051] Gas flow rates at different velocities are input into flow probe 1, and differential pressure sensor 4 collects the differential pressure corresponding to each gas flow rate. The obtained differential pressures are sent to main control chip 5. Main control chip 5 establishes a flow-voltage signal data curve, performs a monotonicity check on the data curve, generates calibration data, and sends the calibration data to storage chip 8 for storage through data transmission component. Alternatively, main control chip 5 retrieves historical calibration data from storage chip 8, performs a monotonicity check based on the historical calibration data, generates calibration data, and sends the calibration data to storage chip 8 for storage through data transmission component.

[0052] Example 3

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

[0054] The technical solution proposed in this invention has significant advantages over existing technical solutions and can effectively solve some key defects in existing technologies, as detailed below:

[0055] 1. Decoupling calibration data from the main control board:

[0056] Limitations of existing technology: In existing technologies, the calibration data of flow probes is typically stored in the memory chip of the main control board, which results in the calibration data being tightly bound to the main control board. When the main control board fails or needs to be replaced, recalibration is required to ensure that the new main control board is compatible with the flow probe.

[0057] Advantages of this invention: In this invention, the calibration data of the flow probe is stored in a separate storage chip (i.e., 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 malfunctions, only the historical calibration data in the storage chip needs to be retrieved again, without the need for recalibration. This greatly improves the ease of equipment maintenance and reduces the complexity and cost of recalibration caused by replacing the main control chip.

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

[0059] Limitations of existing technology: In existing technologies, calibration data storage is closely related to the completion of the flow acquisition system assembly, and calibration can only be performed after the entire machine is assembled. This not only limits the calibration process to assembly time but also prevents calibration at the individual component level, impacting production and maintenance flexibility.

[0060] Advantages of this invention: This invention flexibly transmits calibration data to an independent storage chip 8 via data transmission components (such as communication pin probe 9 and data transmission line 10). Calibration data can be collected and stored during the initial integration phase of the flow probe and the main control chip. More importantly, the calibration data can be updated and adjusted based on historical calibration data, making the calibration process independent of the final assembly of the entire machine, thus providing greater flexibility and adaptability. This method not only improves calibration efficiency but also allows calibration to be completed independently in different production stages and maintenance processes.

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

[0062] Limitations of existing technology: Existing calibration methods usually rely on traditional calibration curves. This method 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 this invention: In this 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. This makes the calibration data generation process not only more intelligent but also effectively identifies and avoids potential measurement errors, thus improving the reliability of the calibration results. Furthermore, since the calibration curves of different flow probes 1 have certain differences, the storage chip 8 forms a one-to-one relationship with the flow probe 1, allowing it to store dedicated calibration data for each flow probe 1. Compared to the traditional main control chip 5 which uses the same calibration curve for different flow probes 1, this further improves calibration accuracy.

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

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

[0066] Advantages of this invention: This invention provides a storage chip-based solution that allows historical calibration data to be retrieved directly from the storage chip when needed. In the event of a malfunction in the flow probe or main control chip, users can directly access historical calibration data, avoiding the cumbersome steps of recalibration. This design not only optimizes the maintenance process but also enhances the system's fault tolerance.

[0067] 5. High efficiency and reliability of data transmission:

[0068] Existing technology limitations: Traditional calibration data storage methods generally require complex data transmission processes, which may lead to instability or low transmission efficiency, especially when the data volume is large.

[0069] Advantages of this invention: The data transmission component (including communication pin probe 9 and data transmission line 10) in this invention uses SPI (Serial Peripheral Interface) for data transmission, which is a high-speed and reliable data transmission method that ensures efficient transmission of calibration data between the main control chip and the memory chip. This not only improves the overall performance of the system but also reduces latency and errors during data transmission.

[0070] In summary, this invention effectively addresses many shortcomings of existing technologies by introducing an independently stored calibration data management method, a flexible calibration data transmission mechanism, and intelligent checks and historical data retrieval during the calibration process. It exhibits significant innovative advantages, particularly in improving equipment maintenance efficiency, ensuring calibration accuracy, and enhancing system flexibility and reliability. These advantages enable this invention to provide a more efficient, accurate, and reliable solution for the calibration management of anesthesia machine flow acquisition systems.

[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 it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A system for storing calibration data of an anesthesia machine flow acquisition system, the flow acquisition system comprising: A flow probe (1) is connected to the anesthesia machine circuit section (B); The first sampling line (2) and the second sampling line (3) are respectively connected to the flow probe (1); The 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 located on the main control board (A) of the anesthesia machine and is used to calibrate the flow probe (1) based on the differential pressure signal and generate calibration data; characterized in that, The storage system, located between the anesthesia machine main control board (A) and the anesthesia machine circuit (B), includes: The first differential pressure transmission port (6) is used to connect the first sampling pipeline (2) and the differential pressure sensor (4); The second differential pressure transmission port (7) is used to connect the second sampling pipeline (3) and the differential pressure sensor (4); 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); A data transmission component is used to transmit the calibration data of the main control chip (5) to the storage chip (8); The data transmission component includes: a communication pin probe (9) and a data transmission line (10); The data transmission component supports serial peripheral interface communication. The storage system further includes: a flow probe interface board (11), which is fixedly connected to the first differential pressure transmission port (6), the second differential pressure transmission port (7) and the storage chip (8) respectively, and is used to assemble the first differential pressure transmission port (6), the second differential pressure transmission port (7) and the storage chip (8); The flow probe interface board (11) is also fixedly connected to the communication pin probe (9); The data transmission line (10) and the communication pin probe (9) are connected by a spring-loaded pressing method.

2. 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 as described in claim 1, comprising: Connect the traffic acquisition system and the storage system; Initialize the calibration function of the flow probe (1); Gas flow rates of different velocities are input into the flow probe (1), and the differential pressure sensor (4) collects the differential pressure corresponding to each gas flow rate. The obtained differential pressure is sent to the main control chip (5). The main control chip (5) establishes a data curve of flow-voltage signal, performs a monotonicity check on the data curve, generates calibration data, and sends the calibration data to the storage chip (8) for storage through the data transmission component. Alternatively, the main control chip (5) retrieves historical calibration data from the storage chip (8), performs a monotonicity check based on the historical calibration data, generates calibration data, and sends the calibration data to the storage chip (8) for storage through the data transmission component.

3. An anesthesia machine, characterized in that, The method for storing calibration data of the anesthesia machine flow acquisition system as described in claim 2.

Images