Lung function test device and method, electronic device and storage medium

Abstract

The embodiment of the invention provides lung function testing equipment and method, electronic equipment and a storage medium, and relates to the technical field of medical testing, the equipment comprises an air inlet channel, a testing channel, a plurality of differential pressure sensors and a signal processing device, the air inlet channel is connected with the testing channel, the testing channel is connected with the differential pressure sensors, and the signal processing device is connected with the electronic equipment. All the differential pressure sensors are connected with the signal processing device, and the measuring ranges of all the differential pressure sensors are different; the air inlet channel is used for acquiring respiratory airflow of a subject and inputting the respiratory airflow into the test channel; the plurality of pressure difference sensors are used for detecting breathing airflow in the test channel to obtain a plurality of breathing pressure differences; the signal processing device is used for generating a test result according to the breathing pressure differences. According to the method, the breathing pressure differences of multiple different ranges are obtained at the same time, then the corresponding detection results are generated according to the breathing pressure differences, accurate measurement of the high flow speed and the low flow speed can be achieved at the same time, and the accuracy of the test results is improved.

Description

Technical Field

[0001] This invention relates to the field of medical testing technology, and more specifically, to a lung function testing device, method, electronic device, and storage medium. Background Technology

[0002] Lung function testing is an important means of assessing respiratory health. Traditional lung function testing instruments mostly use single differential pressure sensors or turbine sensors. However, the breathing intensity of different subjects is different, and single differential pressure sensors cannot meet the accurate measurement of both high and low flow rates at the same time. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a lung function testing device, method, electronic device and storage medium to solve the problem that existing lung function testing instruments cannot simultaneously meet the requirements for accurate measurement of high flow rate and low flow rate.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows: In a first aspect, embodiments of the present invention provide a lung function testing device, comprising: The system includes an air intake channel, a test channel, multiple differential pressure sensors, and a signal processing device. The air intake channel is connected to the test channel, and the test channel is connected to the differential pressure sensors. Each differential pressure sensor is connected to the signal processing device, and each differential pressure sensor has a different measurement range. The air intake channel is used to acquire the subject's breathing airflow and input the breathing airflow into the test channel; Multiple differential pressure sensors are used to detect the respiratory airflow in the test channel to obtain multiple respiratory pressure differences; the number of differential pressure sensors is at least two, one sensor is used to measure the respiratory pressure difference under low flow rate conditions, and the other sensor is used to measure the respiratory pressure difference under high flow rate conditions; The signal processing device is used to generate test results based on multiple respiratory pressure differences.

[0005] In an optional implementation, every two differential pressure sensors constitute a group of sensors, and two air pressure detection ports are provided on the test channel. The two differential pressure sensors in the same group of sensors are respectively connected to different air pressure detection ports.

[0006] In an optional embodiment, the lung function testing device further includes: a test channel switching device, wherein the test channels include a plurality of test channels, the test channel switching device is connected to each of the test channels, and each of the test channels has a different aperture; The test channel switching device is used to switch the test channel connected to the air intake channel.

[0007] In an optional embodiment, the lung function testing device further includes a differential pressure sensor switching device, which is connected to each of the differential pressure sensors, and each of the differential pressure sensors has a different measurement range; The differential pressure sensor switching device is used to switch the differential pressure sensor connected to the air pressure detection port.

[0008] In an optional embodiment, the differential pressure sensor switching device includes a first switching device and a second switching device, and the differential pressure sensor includes a first sensor group and a second sensor group, both of which include multiple groups of sensors. The first switching device is used to switch the first sensor group connected to the air pressure detection port, and the second switching device is used to switch the second sensor group connected to the air pressure detection port.

[0009] In an optional embodiment, the lung function testing device further includes a flow rate detection device, which is connected to the air intake channel and the signal processing device respectively, and the signal processing device is connected to the test channel switching device and the differential pressure sensor switching device respectively. The flow rate detection device is used to detect the gas flow rate in the air intake channel and send the gas flow rate to the signal processing device. The signal processing device is used to control the test channel switching device and the differential pressure sensor switching device according to the gas flow rate.

[0010] In a second aspect, embodiments of the present invention provide a lung function testing method, applied to the lung function testing device described in the first aspect, the method comprising: Obtain the subject's respiratory airflow; The respiratory airflow was detected to obtain multiple respiratory pressure differences; Test results are generated based on multiple respiratory pressure differences.

[0011] In an optional implementation, the step of detecting the respiratory airflow to obtain multiple respiratory pressure differentials includes: Obtain the flow rate corresponding to the respiratory airflow, and select the corresponding target sensor from the differential pressure sensor based on the flow rate; The respiratory pressure difference is obtained by detecting the respiratory airflow using the target sensor.

[0012] Thirdly, embodiments of the present invention provide an electronic device, including a processor and a memory, wherein the memory stores machine-executable instructions that can be executed by the processor, and the processor can execute the machine-executable instructions to implement the lung function testing method described in the second aspect.

[0013] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the lung function testing method described in the second aspect.

[0014] The present invention provides a lung function testing device, method, electronic device, and storage medium that simultaneously detects the respiratory airflow of a subject by configuring multiple differential pressure sensors with different ranges, obtains multiple respiratory pressure differences, and then generates corresponding test results based on the respiratory pressure differences. The present invention can simultaneously achieve accurate measurement of high flow rates and low flow rates, thereby improving the accuracy of test results.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A block diagram of an electronic device provided by an embodiment of the present invention is shown; Figure 2 A schematic diagram of the structure of a lung function testing device provided in an embodiment of the present invention is shown; Figure 3 This diagram illustrates the structure of a test channel switching device according to an embodiment of the present invention. Figure 4 A schematic flowchart of a lung function testing method provided by an embodiment of the present invention is shown.

[0018] Icons: 100 - Electronic device; 110 - Memory; 120 - Processor; 130 - Communication module; 210 - Air intake channel; 220 - Test channel; 221 - First test channel; 222 - Second test channel; 223 - Third test channel; 224 - Fourth test channel; 230 - Screen; 240 - First air pressure detection port; 250 - Second air pressure detection port; 260 - Signal processing device; 270 - First differential pressure sensor; 280 - Second differential pressure sensor; 290 - Switch. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Please refer to Figure 1 , Figure 1 This is a block diagram of an electronic device 100 provided in this embodiment. The electronic device 100 includes a memory 110, a processor 120, and a communication module 130. The memory 110, processor 120, and communication module 130 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines.

[0023] The memory 110 is used to store programs or data. The memory 110 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc.

[0024] The processor 120 is used to read / write data or programs stored in the memory 110 and to perform corresponding functions.

[0025] The communication module 130 is used to establish a communication connection between the electronic device 100 and other communication terminals through the network, and to send and receive data through the network.

[0026] It should be understood that, Figure 1 The structure shown is only a schematic diagram of the electronic device 100. The electronic device 100 may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown. Figure 1 The components shown can be implemented using hardware, software, or a combination thereof.

[0027] Please refer to Figure 2 , Figure 2 This embodiment provides a schematic diagram of the structure of a lung function testing device, including: The system includes an intake channel 210, a test channel 220, multiple differential pressure sensors, and a signal processing device 260. The intake channel 210 is connected to the test channel 220, and the test channel 220 is connected to the differential pressure sensors. Each differential pressure sensor is connected to the signal processing device 260, and each differential pressure sensor has a different measurement range. Figure 2 As shown, the differential pressure sensor includes a first differential pressure sensor 270 and a second differential pressure sensor 280.

[0028] During pulmonary function testing, the subject breathes through an air intake channel 210, which acquires the subject's respiratory airflow and inputs it into the test channel 220. A screen 230 is provided in the test channel 220, with a pressure detection port on each side of the screen 230, designated as a first pressure detection port 240 and a second pressure detection port 250. One end of a differential pressure sensor is connected to the first pressure detection port 240 to detect the pressure of the respiratory airflow before it passes through the screen 230, and the other end is connected to the second pressure detection port 250 to detect the pressure of the respiratory airflow after it passes through the screen 230, thus obtaining the respiratory pressure difference. In this embodiment, at least two differential pressure sensors are used: one sensor to measure the respiratory pressure difference under low flow rate conditions, and the other sensor to measure the respiratory pressure difference under high flow rate conditions. The respiratory pressure differences are then sent to a signal processing device 260, which generates test results based on the multiple respiratory pressure differences.

[0029] This embodiment simultaneously detects the respiratory airflow of the subject by configuring multiple differential pressure sensors with different ranges, obtaining multiple respiratory pressure differences, and then generating corresponding detection results based on the respiratory pressure differences. This embodiment of the invention can simultaneously achieve accurate measurement of high flow rates and low flow rates, improving the accuracy of test results.

[0030] Please refer to Figure 3 , Figure 3 This is a schematic diagram of a test channel switching device provided in this embodiment.

[0031] In an optional embodiment, the lung function testing device further includes a test channel switching device, wherein the test channels 220 include a plurality of test channels, the test channel switching device is connected to each of the test channels 220, each of the test channels 220 having a different aperture, and the test channel switching device is used to switch the test channel 220 connected to the air intake channel 210.

[0032] The test channel switching device includes a circular test channel mounting device and a switching switch 290. Multiple test channels 220 are mounted on the test channel mounting device, such as... Figure 3As shown, the test channel mounting device is equipped with a first test channel 221, a second test channel 222, a third test channel 223, and a fourth test channel 224. The number of test channels can be increased or decreased according to actual needs. A switch 290 is used to control the rotation of the circular test channel mounting device. Each test channel 220 has a different aperture. By rotating the switch 290, the test channel 220 connected to the air intake channel 210 can be switched. Alternatively, before conducting the lung function test, the signal processing device 260 automatically switches to the corresponding test channel 220 based on the respiratory airflow of the subject's previous breaths, thereby matching the test channel 220 with the subject's breathing and improving test accuracy.

[0033] This embodiment uses a test channel switching device to switch test channels at any time, so that the test channel matches the subject's breathing condition, thereby improving the accuracy and scientific validity of the test results.

[0034] In one embodiment, the lung function testing device further includes a differential pressure sensor switching device, which is connected to each of the differential pressure sensors, and each of the differential pressure sensors has a different measurement range; the differential pressure sensor switching device is used to switch the differential pressure sensor connected to the air pressure detection port.

[0035] The structure of the differential pressure sensor switching device can be the same as that of the test channel switching device. Since two differential pressure sensors with different ranges need to be used simultaneously for each test, the two differential pressure sensors with different ranges can be used as a group of sensors, and a corresponding gear can be set for each group of sensors. The differential pressure sensor switching device can be switched to the corresponding gear to perform differential pressure detection through that group of sensors.

[0036] Alternatively, the differential pressure sensor switching device can be set between every two sensors. When switching to the corresponding setting, the sensors on both sides of the setting can be used simultaneously for differential pressure detection. In order to meet the detection requirements of both high and low flow rates during testing, the differential pressure sensors can be set in an interval manner, that is, a low flow rate differential pressure sensor is set between every two high flow rate differential pressure sensors.

[0037] Similarly, the differential pressure sensor switching device can be automatically controlled by the signal processing device 260, that is, it can automatically select the corresponding differential pressure sensor according to the subject's breathing airflow so that the range of the differential pressure sensor matches the subject's breathing airflow.

[0038] This embodiment uses a differential pressure sensor switching device to enable the differential pressure sensor to adaptively switch according to the subject's breathing conditions, thereby matching the differential pressure sensor with the subject's respiratory airflow and improving the accuracy of lung function testing.

[0039] In one embodiment, the differential pressure sensor switching device includes a first switching device and a second switching device, and the differential pressure sensor includes a first sensor group and a second sensor group, both of which include multiple groups of sensors. The first switching device is used to switch the first sensor group connected to the air pressure detection port, and the second switching device is used to switch the second sensor group connected to the air pressure detection port.

[0040] For example, multiple differential pressure sensors used to test low-flow-rate respiratory airflow can be used as a first sensor group, and multiple differential pressure sensors used to test high-flow-rate respiratory airflow can be used as a second sensor group. By using the first switching device and the second switching device in combination, differential pressure sensors with different ranges can be combined for testing at any time during the test, which greatly improves the flexibility of the test and the accuracy of the test results.

[0041] In one embodiment, the lung function testing device further includes a flow rate detection device, which is connected to the air intake channel 210 and the signal processing device 260 respectively, and the signal processing device 260 is connected to the test channel switching device and the differential pressure sensor switching device respectively. The flow rate detection device is used to detect the gas flow rate in the air intake channel 210 and send the gas flow rate to the signal processing device 260; The signal processing device 260 is used to control the test channel switching device and the differential pressure sensor switching device according to the gas flow rate.

[0042] A signal processing device 260 can be installed at the airflow channel, which can communicate with the test channel switching device and the differential pressure sensor switching device respectively. The signal processing device 260 calculates the gas flow rate based on the data from the differential pressure sensor, and then controls the test channel switching device and the differential pressure sensor to switch the test channel 220 and the differential pressure sensor simultaneously according to the flow rate, thereby greatly improving the test efficiency and test accuracy.

[0043] In one implementation, lung function testing can also be performed using a single differential pressure sensor.

[0044] When using a single differential pressure sensor for testing, sensor switching may occur.

[0045] For example, when the respiratory flow rate is low, a low-range differential pressure sensor is used for testing. However, as the flow rate gradually increases and approaches the upper limit of the low-range sensor, a high-range differential pressure sensor needs to be turned on. However, the data collected when the high-range differential pressure sensor is first turned on may have transient errors. At this time, it is necessary to perform error verification based on the low-range differential pressure sensor.

[0046] It can simultaneously acquire low-range differential pressure sensor data (D_low) and high-range differential pressure sensor data (D_high), perform CRC encoding on D_low, and generate a checksum CRC_low.

[0047] For example, if D_low = [1, 0, 1, 1] (binary), then the remainder is calculated by modulo 2 division and appended to the end of the data to form CRC_low = [1, 0, 1, 1, 0, 1].

[0048] Compare D_high with CRC_low: If the CRC check result of D_high is consistent with that of CRC_low, the switch is considered successful.

[0049] If there is a discrepancy, it is considered that there is a transient error, and the weighted average compensation mechanism needs to be triggered.

[0050] The weighted average formula is: Where Q is the actual flow rate, Q1 is the set high flow rate, Q2 is the set low flow rate, and α is the weighting coefficient.

[0051] To perform the corresponding steps in the above embodiments and various possible methods, an implementation of a lung function testing method is given below. Please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is a flowchart illustrating a lung function testing method provided in an embodiment of the present invention. It should be noted that the basic principle and technical effects of the lung function testing method provided in this embodiment are the same as those in the above embodiments. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiments. The lung function testing method includes: S401. Obtain the subject's respiratory airflow; S402. Detect the respiratory airflow to obtain multiple respiratory pressure differences; S403. Generate test results based on the multiple described respiratory pressure differences.

[0052] In one embodiment, the step of detecting the respiratory airflow to obtain multiple respiratory pressure differentials includes: Obtain the flow rate corresponding to the respiratory airflow, and select the corresponding target sensor from the differential pressure sensor based on the flow rate; The respiratory pressure difference is obtained by detecting the respiratory airflow using the target sensor.

[0053] Optionally, the above method can be stored in the form of software or firmware. Figure 1 The memory shown is either stored in or embedded in the operating system (OS) of the pulmonary function testing device, and can be used by... Figure 1 The processor executes the commands. Meanwhile, the data and program code required to execute these modules can be stored in memory.

[0054] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0055] In addition, the functional modules in the various embodiments of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0056] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lung function test device, characterized in that, The device comprises: an air inlet channel, a test channel, a plurality of differential pressure sensors and a signal processing device, the air inlet channel is connected with the test channel, the test channel is connected with the differential pressure sensors, each of the differential pressure sensors is connected with the signal processing device, and the range of each of the differential pressure sensors is different; the air inlet channel is used to obtain the respiratory airflow of a subject and input the respiratory airflow into the test channel; a plurality of the differential pressure sensors are used to detect the respiratory airflow in the test channel to obtain a plurality of respiratory pressure differences; the number of the differential pressure sensors is at least two, one sensor is used to measure the respiratory pressure difference under low flow rate condition, and the other sensor is used to measure the respiratory pressure difference under high flow rate condition; the signal processing device is used to generate a test result according to the plurality of respiratory pressure differences.

2. A lung function test device according to claim 1, characterised in that, Each two of the differential pressure sensors constitute a group of sensors, two air pressure detection holes are arranged on the test channel, and the two differential pressure sensors of the same group of sensors are connected with different air pressure detection holes respectively.

3. A lung function test device according to claim 2, characterised in that, The lung function test device further comprises a test channel switching device, the test channel comprises a plurality of test channels, and the test channel switching device is connected with each of the test channels; the pore diameter of each of the test channels is different; the test channel switching device is used to switch the test channel connected with the air inlet channel.

4. A lung function test device according to claim 3, characterised in that, The lung function test device further comprises a differential pressure sensor switching device, the differential pressure sensor switching device is connected with each of the differential pressure sensors, and the range of each of the differential pressure sensors is different; the differential pressure sensor switching device is used to switch the differential pressure sensor connected with the air pressure detection hole.

5. A lung function test device according to claim 4, characterised in that, The differential pressure sensor switching device comprises a first switching device and a second switching device, the differential pressure sensors comprise a first sensor group and a second sensor group, and the first sensor group and the second sensor group each comprise a plurality of groups of sensors; the first switching device is used to switch the first sensor group connected with the air pressure detection hole, and the second switching device is used to switch the second sensor group connected with the air pressure detection hole.

6. A lung function test device according to claim 5, wherein, The lung function test device further comprises a flow rate detection device, the flow rate detection device is connected with the air inlet channel and the signal processing device respectively, and the signal processing device is connected with the test channel switching device and the differential pressure sensor switching device respectively; the flow rate detection device is used to detect the gas flow rate in the air inlet channel and send the gas flow rate to the signal processing device; the signal processing device is used to control the test channel switching device and the differential pressure sensor switching device according to the gas flow rate.

7. A method of lung function testing, characterized by, The method is applied to the lung function test device according to any one of claims 1-6, and the method comprises: obtaining the respiratory airflow of a subject; detecting the respiratory airflow to obtain a plurality of respiratory pressure differences; generating a test result according to the plurality of respiratory pressure differences.

8. The lung function test method of claim 7, wherein, The step of detecting the respiratory airflow to obtain a plurality of respiratory pressure differences comprises: obtaining the flow rate corresponding to the respiratory airflow, and selecting a corresponding target sensor from the differential pressure sensors according to the flow rate; The respiratory pressure difference is obtained by detecting the respiratory airflow by the target sensor.

9. An electronic device, comprising: The processor and a memory are included, the memory stores machine executable instructions capable of being executed by the processor, and the processor can execute the machine executable instructions to implement the lung function test method in claim 7 or 8.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the lung function test method in claim 7 or 8.

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