A static pressure detection method, apparatus, device, and blood pressure simulator

Abstract

This invention provides a static pressure detection method, apparatus, device, and blood pressure simulator. The apparatus includes: a gas source, a gas container, and a pressure detection device; a first gas flow control device is disposed between the gas source and the gas container; a gas outlet is provided on the gas container, which is used to connect to the gas inlet of a blood pressure monitor; the pressure detection device is used to detect the pressure inside the gas container; the first gas flow control device is used to adjust the gas flow rate from the gas source to the gas container based on the pressure value detected by the pressure detection device. The apparatus provided by this invention ensures that the pressure inside the gas container is always maintained within a preset pressure value error range, while simultaneously ensuring that the pressure value detected by the blood pressure monitor is always maintained within this preset pressure value error range, thereby improving the testing accuracy of the blood pressure monitor in static pressure calibration mode.

Description

Technical Field

[0001] This invention relates to the field of medical technology, specifically to a static pressure detection method, device, equipment, and blood pressure simulator. Background Technology

[0002] Static pressure testing is one of the important indicators for evaluating the performance of a blood pressure monitor. In static pressure testing, a blood pressure simulator provides a stable pressure value to the blood pressure monitor, and then observes whether the blood pressure monitor can accurately read and display this pressure value.

[0003] However, while blood pressure simulators can provide a stable pressure value to blood pressure monitors, most blood pressure monitors use a micro-leakage valve system (which is typically a mechanical valve and not controlled by circuitry). This means that during static pressure measurement, the blood pressure monitor cannot stabilize at a specific pressure value, resulting in inaccurate readings from the simulator. In existing technology, to ensure accurate pressure readings, the blood pressure simulator is usually connected directly to a sensor mounted on the PCB within the blood pressure monitor. However, directly connecting the simulator to the PCB sensor requires disassembling the blood pressure monitor. Disassembling the monitor can lead to issues such as PCB deformation and the intrusion of sweat from hands, resulting in inaccurate pressure readings and errors in static pressure measurement.

[0004] Therefore, improving the accuracy of blood pressure monitor testing by blood pressure simulators in static pressure calibration mode has become a problem that needs to be solved. Summary of the Invention

[0005] This invention provides a static pressure detection method, apparatus, device, and blood pressure simulator to address the shortcomings of low accuracy in static pressure detection in existing technologies.

[0006] The present invention provides a static pressure detection device, including a gas source, a gas container, a pressure detection device, and a dehumidification device; a first gas flow control device is provided between the gas source and the gas container;

[0007] A gas outlet is provided on the gas container, and the gas outlet is used to communicate with the gas inlet of the sphygmomanometer;

[0008] The pressure detection device is used to detect the pressure inside the gas container; the first gas flow control device is used to adjust the gas flow rate from the gas source to the gas container according to the pressure value detected by the pressure detection device.

[0009] The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K;

[0010] The outlet of the gas source is connected to the inlet of the dehumidification device; the outlet of the dehumidification device is connected to one end of the first gas flow control device, and the other end of the first gas flow control device is connected to the inlet of the gas container.

[0011] Furthermore, in the static pressure detection device described above, a second gas flow control device is provided in the gas path between the outlet of the gas container and the pressure detection device.

[0012] Furthermore, in the static pressure detection device described above, the dehumidification device includes: an oil-water separation mechanism, a water container, and a heating device;

[0013] The water container is located below the oil-water separation mechanism and is used to collect the liquid separated by the oil-water separation mechanism; the heating device is located on the water container and is used to heat the liquid inside the water container.

[0014] Furthermore, the static pressure detection device described above also includes a liquid drying device; the liquid drying device is used to disperse the steam heated inside the water container.

[0015] Furthermore, in the static pressure detection device described above, the gas container includes: a gas inlet channel, a gas outlet channel, and a gas containment cavity; the cross-sectional area of ​​the gas containment cavity is at least three times the cross-sectional area of ​​the gas inlet channel and at least three times the cross-sectional area of ​​the gas outlet channel.

[0016] The angles at the connections between the gas inlet channel, the gas outlet channel, and the gas accommodating cavity are all greater than 75°.

[0017] The present invention also provides a blood pressure simulator, including any of the static pressure detection devices described above.

[0018] The present invention also provides a static pressure detection method, comprising:

[0019] Connect the gas inlet of the sphygmomanometer to the gas outlet of the blood pressure simulator;

[0020] Set a preset static pressure value on the blood pressure simulator;

[0021] Turn on the air source so that the gas in the air source passes through the dehumidification device and enters the gas container;

[0022] The pressure inside the gas container is detected by a pressure detection device to obtain the first pressure value;

[0023] The first pressure value is compared with a preset static pressure value. Based on the comparison result, the first gas flow control device or the second gas flow control device is controlled so that the absolute difference between the first pressure value and the static pressure value is within a first preset value range; the first preset value range is the range corresponding to the blood pressure simulator in a stable state.

[0024] The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K.

[0025] Furthermore, in the static pressure detection method described above, the step of controlling the first gas flow control device or the second gas flow control device according to the comparison result, so that the absolute difference between the first pressure value and the static pressure value is within a first preset value range, includes:

[0026] The absolute value of the first difference between the first pressure value and the preset static pressure value is repeatedly monitored. When the absolute value of the first difference is greater than or equal to the second preset value, the control value of the second gas flow control device or the control value of the electro-proportional valve is gradually increased from the first control value until the absolute value of the first difference is less than the second preset value.

[0027] The absolute value of the second difference between the first pressure value and the preset static pressure value is repeatedly monitored. If the absolute value of the second difference is greater than or equal to the third preset value and less than the second preset value, the second gas flow control device or the electro-proportional valve is controlled at the second control value until the absolute value of the second difference is less than the third preset value; wherein the second control value is less than the first control value.

[0028] Repeatedly monitor the absolute value of the third difference between the first pressure value and the preset static pressure value. If the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value, control the second gas flow control device or control the electro-proportional valve at the third control value until the absolute value of the third difference is less than the first preset value.

[0029] The third control value is determined based on multiple pressure values ​​collected in real time by the pressure detection device; and the third control value is less than the second control value.

[0030] Repeatedly monitor the absolute value of the fourth difference between the first pressure value and the preset static pressure value. If the absolute value of the fourth difference is less than the first preset value, enter the pressure stabilization state and stop the adjustment.

[0031] Furthermore, in the static pressure detection method described above, if the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value at the first moment, and using the first moment as a reference, during the period until the end of this static pressure detection, if the absolute value of the third difference is greater than the third preset value and less than or equal to the fourth preset value, the second gas flow control device or the electro-proportional valve is controlled at a third control value to make the absolute value of the third difference less than the first preset value.

[0032] Furthermore, in the static pressure detection method described above, the third control value is determined based on multiple pressure values ​​collected in real time by the pressure detection device, including:

[0033] Determine whether the multiple pressure values ​​detected by the pressure detection device are the multiple pressure values ​​corresponding to the current detection state; if the multiple pressure values ​​are the multiple pressure values ​​corresponding to the current detection state, determine the third control value based on the multiple pressure values;

[0034] If the multiple pressure values ​​are not the multiple pressure values ​​corresponding to the current detection state, clear the multiple pressure values ​​collected in the cache, and determine the third control value by re-collecting multiple pressure data.

[0035] Furthermore, in the static pressure detection method described above, the step of controlling the first gas flow control device based on the comparison result, such that the difference between the first pressure value and the static pressure value falls within a first preset value range, includes:

[0036] The difference between the first pressure value and the preset static pressure value is repeatedly monitored, and the difference between the first pressure value and the static pressure value is kept within the first preset value range by controlling the solenoid valve K.

[0037] The present invention also provides a static pressure detection device, comprising:

[0038] A connecting unit is used to connect the gas inlet of the sphygmomanometer to the gas outlet of the blood pressure simulator.

[0039] The setting unit is used to set a preset static pressure value on the blood pressure simulator.

[0040] The inflation unit is used to start the inflation source, so that the gas in the gas source passes through the dehumidification device and enters the gas container;

[0041] The detection unit is used to detect the pressure inside the gas container through a pressure detection device to obtain a first pressure value;

[0042] The comparison unit is used to compare the first pressure value with a preset static pressure value;

[0043] The control unit is used to control the first gas flow control device or the second gas flow control device according to the comparison result, so that the difference between the first pressure value and the static pressure value is within a first preset value range; the first preset value range is the range corresponding to the blood pressure simulator in a stable state.

[0044] The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K.

[0045] Furthermore, in the static pressure detection device described above, the control unit further includes:

[0046] The first monitoring unit is used to repeatedly monitor the absolute value of the first difference between the first pressure value and the preset static pressure value;

[0047] The first control unit is configured to, when the absolute value of the first difference is greater than or equal to the second preset value, gradually increase the control value of the second gas flow control device or the control value of the electro-proportional valve from the first control value until the absolute value of the first difference is less than the second preset value.

[0048] The second monitoring unit is used to repeatedly monitor the absolute value of the second difference between the first pressure value and the preset static pressure value;

[0049] The second control unit is configured to, when the absolute value of the second difference is greater than or equal to a third preset value and less than the second preset value, control the second gas flow control device or control the electro-proportional valve at a second control value until the absolute value of the second difference is less than the third preset value; wherein the second control value is less than the first control value.

[0050] The third monitoring unit repeatedly monitors the absolute value of the third difference between the first pressure value and the preset static pressure value;

[0051] The third control unit is used to control the second gas flow control device or the electro-proportional valve at a third control value when the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value, until the absolute value of the third difference is less than the first preset value.

[0052] The third control value is determined based on multiple pressure values ​​collected in real time by the pressure detection device; and the third control value is less than the second control value.

[0053] The fourth monitoring unit is used to repeatedly monitor the absolute value of the fourth difference between the first pressure value and the preset static pressure value;

[0054] The fourth control unit is used to enter a voltage stabilization state and stop adjustment when the absolute value of the fourth difference is less than the first preset value.

[0055] Furthermore, in the static pressure detection device described above, the third control unit includes:

[0056] The judgment unit is used to determine whether the multiple pressure values ​​detected by the pressure detection device are the multiple pressure values ​​corresponding to the current detection state;

[0057] The first determining unit is configured to determine the third control value based on the plurality of pressure values ​​when the plurality of pressure values ​​are the plurality of pressure values ​​corresponding to the current detection state.

[0058] The clearing unit is used to clear the multiple pressure values ​​collected in the buffer when the multiple pressure values ​​are not the multiple pressure values ​​corresponding to the current detection state;

[0059] The second determining unit is used to re-acquire multiple pressure data and determine the third control value based on the re-acquired multiple pressure data.

[0060] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the static pressure detection method as described in any of the preceding claims.

[0061] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the static pressure detection method as described above.

[0062] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the static pressure detection method as described above.

[0063] The present invention provides a static pressure detection method, apparatus, device, and blood pressure simulator. By using a first gas flow control device to adjust the pressure inside the gas container, the pressure inside the gas container can always be kept within the error range of a preset pressure value. This ensures that the pressure value detected by the blood pressure monitor is always kept within the error range of the preset pressure value, thereby improving the testing accuracy of the blood pressure monitor in the static pressure calibration mode. Attached Figure Description

[0064] Figure 1 A schematic diagram of the static pressure detection device provided by the present invention;

[0065] Figure 2 This is one of the flowcharts of the static pressure detection method provided by the present invention;

[0066] Figure 3 This is a second static pressure detection method provided by the present invention;

[0067] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0069] As a high-precision device, the blood pressure simulator plays a crucial role in the calibration and verification of blood pressure monitors. It simulates real-world blood pressure fluctuations, including key parameters such as systolic and diastolic pressure, ensuring accurate measurements in actual use. Testing the static pressure of a blood pressure monitor using a simulator primarily ensures accuracy under static conditions. Static pressure measurement is a vital indicator of a blood pressure monitor's performance, helping to identify potential deviations or malfunctions during measurement and ensuring reliable results in real-world use. The testing principle is as follows: in static pressure testing, the simulator provides a stable pressure value to the monitor and observes whether it accurately reads and displays this value. This process is similar to the calibration process when using a mercury sphygmomanometer. The simulator sets multiple reading points (e.g., 100 mmHg, 200 mmHg, 300 mmHg), which typically cover the blood pressure range encountered in actual measurements. At each reading, the blood pressure simulator provides a stable pressure value and records the blood pressure monitor's reading. By comparing the standard value provided by the simulator with the monitor's reading, the blood pressure monitor's error range can be determined. If the monitor's reading is within the error range, the monitor is considered accurate in static pressure testing. If the error exceeds the acceptable range, the monitor needs to be calibrated or repaired.

[0070] However, although blood pressure simulators can provide a stable pressure value to blood pressure monitors, most blood pressure monitors use a micro-leakage valve system (which is usually a mechanical valve and not controlled by circuitry). This means that during static pressure measurement, the blood pressure monitor cannot stabilize at a specific value set by the simulator, resulting in inaccurate pressure readings. In existing technology, to ensure accurate pressure readings, the blood pressure simulator is typically connected directly to a sensor mounted on the PCB within the blood pressure monitor. However, directly connecting the simulator to the PCB sensor requires disassembling the blood pressure monitor. Disassembling the monitor can lead to inaccurate pressure readings due to interference from factors such as PCB deformation and the intrusion of sweat from the user's hands.

[0071] A blood pressure simulator mainly consists of a high-precision sensor, an air pump, a pressure control system, a display screen, and a user interface. The high-precision sensor detects pressure changes during the blood pressure simulation process, ensuring accurate and reliable simulated blood pressure values. The air pump provides a stable pressure source to simulate the rise in blood pressure. Adjusting the inflation speed and pressure allows for different testing needs. The pressure control system precisely controls pressure changes during the simulation, ensuring the simulated blood pressure waveform matches real-world conditions, thus enabling various testing modes such as static pressure testing, dynamic pressure testing, leakage testing, and overpressure testing. The display screen shows various parameters and waveforms during the blood pressure simulation, facilitating user observation and recording. The user interface provides an interface for interaction with the blood pressure simulator, including buttons and a touchscreen. Users can set test parameters, start tests, and view test results through the user interface. The user interface also supports connection to external devices (such as computers) for data analysis and processing.

[0072] Figure 1 This is a schematic diagram of the static pressure detection device provided by the present invention, as shown below. Figure 1 As shown, the device includes: a gas source 1, a gas container 5, and a pressure detection device 6; a first gas flow control device is provided between the gas source 1 and the gas container 5; a gas outlet 7 is provided on the gas container 5, which is used to connect to the gas inlet of a sphygmomanometer; the pressure detection device 6 is used to detect the pressure inside the gas container 5; and the first gas flow control device is used to adjust the gas flow rate from the gas source 1 to the gas container 5 according to the pressure value detected by the pressure detection device 6.

[0073] Specifically, in use, the gas outlet 7 of the gas container 5 is sealed and connected to the gas inlet of the sphygmomanometer. Then, a certain standard pressure value is preset for the sphygmomanometer, and the gas supply is activated, allowing the gas in the gas source 1 to be delivered to the gas container 5 through the gas path. The gas container 5 acts as a gas buffer chamber, which can buffer and stabilize the gas pressure. When the pressure in the gas container 5 stabilizes and reaches the preset standard pressure value, the valve on the gas outlet 7 is opened, and the gas with stable pressure is delivered to the air chamber (cuff) of the sphygmomanometer through the gas outlet 7. Thus, the pressure sensor of the sphygmomanometer can read the stable pressure value.

[0074] The function of the first gas flow control device is to adjust the gas flow rate so that the actual pressure value detected by the pressure detection device 6 inside the gas container 5 is always consistent with the standard pressure value, or always within a preset error range. Specifically, the adjustment method can be as follows: when the pressure detection device 6 detects that the actual pressure inside the gas container 5 is much lower than the standard pressure value, the gas flow rate adjustment level of the first gas flow control device is increased, allowing the gas in the gas container 5 to be quickly delivered to the gas container 5, thus enabling the actual pressure detected by the pressure detection device 6 to approach the standard pressure value more quickly, improving the detection efficiency of the blood pressure simulator; conversely, when the actual pressure detected by the pressure detection device 6 is lower than the standard pressure value, but the error range is not large, the gas flow rate adjustment level is lowered to prevent the gas pressure inside the gas container 5 from exceeding the limit, allowing the actual pressure detected by the pressure detection device 6 to also approach the standard pressure value more quickly. In this embodiment of the invention, the pressure detection device 6 can be a gas pressure sensor.

[0075] The static pressure detection device provided by the present invention adjusts the pressure inside the gas container through a first gas flow control device, so that the pressure inside the gas container can always be kept within the error range of a preset pressure value, thereby ensuring that the pressure value detected by the blood pressure monitor is always kept within the error range of the preset pressure value, thereby improving the testing accuracy of the blood pressure monitor by the blood pressure simulator in static pressure calibration mode.

[0076] Furthermore, the first gas flow control device includes: an electro-proportional valve 31 and / or a solenoid valve K32.

[0077] Specifically, the electro-proportional valve precisely controls the position and opening of the valve core through electromagnetic force, enabling high-precision regulation of gas flow. This high-precision control allows the blood pressure simulator to more accurately meet preset pressures, improving its stability and reliability in static pressure calibration mode. Furthermore, the electro-proportional valve has a fast response speed, reacting to control signals in a very short time to quickly adjust the gas flow. This rapid response allows the blood pressure simulator to adapt to changes in flow requirements more promptly, improving its dynamic performance in static pressure calibration mode. Moreover, since the electro-proportional valve provided by this invention is equipped with a programmable control module, users can preset different flow regulation schemes according to different application needs and achieve automated control through programming. This flexibility allows the electro-proportional valve to adapt to various complex application scenarios, improving the adaptability and flexibility of the blood pressure simulator in static pressure calibration mode. In addition, the electro-proportional valve has continuous adjustment capabilities, enabling smooth regulation of gas flow. This continuous adjustment capability allows the blood pressure simulator to transition more smoothly between different flow states, avoiding pressure fluctuations and instability caused by sudden changes in flow.

[0078] As another device for regulating gas flow, solenoid valve K32 can regulate gas flow faster. Therefore, when the pressure in gas container 5 is much lower than the preset pressure standard value, gas from the gas source can be quickly delivered to gas container 5 by opening solenoid valve K. This allows the actual pressure detected by pressure detection device 6 to quickly approach the preset pressure standard value, thereby improving the testing efficiency of blood pressure monitor in static pressure calibration mode.

[0079] Furthermore, the device provided by the present invention further includes: a dehumidification device; the outlet of the gas source 1 is connected to the inlet of the dehumidification device; the outlet of the dehumidification device is connected to one end of the first gas flow control device, and the other end of the first gas flow control device is connected to the inlet of the gas container 5.

[0080] Specifically, during gas compression, moisture in the air is often compressed and precipitated, forming water mist or droplets that can enter the circuit system, such as electric proportional valves and sensors, potentially causing damage to the entire system. In the device of this invention, since water cannot be manually drained from the device, nor can it be left inside, a dehumidification device is used to treat the moisture in the gas, thereby improving the overall lifespan of the device. Furthermore, since the gas delivered to the gas container 5 may contain moisture, when this moisture-laden gas is finally delivered to the blood pressure cuff, it can cause errors in the blood pressure monitor's sensor readings. To avoid this error, this application uses a dehumidification device between the gas source and the gas container to dry the gas in the gas source 1, and then inputs the dried gas into the blood pressure monitor, ensuring more accurate readings from the blood pressure monitor's pressure sensor, and further improving the accuracy of the blood pressure simulator's test of the blood pressure monitor in static pressure calibration mode.

[0081] Furthermore, a second gas flow control device 8 is installed in the gas path between the outlet of the gas container 5 and the pressure detection device 6.

[0082] Specifically, the second gas flow control device 8 is used to regulate the pressure inside the gas container 5. That is, when the pressure inside the gas container 5 exceeds a preset standard pressure value, the second gas flow control device 8 can release pressure from the gas container 5, so that the actual pressure detected by the pressure detection device 6 is equal to or within the error range of the standard pressure value. In this embodiment of the invention, the second gas flow control device 8 can be a solenoid valve. The solenoid valve ensures that the pressure in the gas container is maintained within a preset value range. When the pressure exceeds the set value, the solenoid valve automatically opens to release excess gas, thereby reducing the pressure; when the pressure is lower than the set value, gas can be replenished through the gas source 1 to restore the pressure. This precise pressure regulation capability allows the device to operate more stably. Furthermore, during the filling process through the gas source 1, excessive gas or temperature rise may cause the pressure inside the gas container 5 to become too high, potentially leading to a safety accident. The solenoid valve in this invention effectively prevents this from happening, ensuring the safe use of the entire device.

[0083] Furthermore, this embodiment of the invention provides a specific structure for a dehumidification device, including: an oil-water separation mechanism 21, a water container 22, and a heating device 23; the water container 22 is disposed below the oil-water separation mechanism 21 and is used to collect the liquid separated by the oil-water separation mechanism 21; the heating device 23 is disposed on the water container 21 and is used to heat the liquid in the water container 21, thereby causing it to evaporate.

[0084] Furthermore, the dehumidification device provided in this embodiment of the invention also includes a liquid drying device 24; the liquid drying device 24 is used to dissipate the steam heated inside the water container 22. In this embodiment of the invention, the liquid drying device 24 can specifically be a fan.

[0085] The static pressure detection device provided by the present invention improves the evaporation rate of liquid in the water container 22 by adding a fan to the dehumidification device, thereby further improving the testing efficiency of the blood pressure simulator for the blood pressure monitor in the static pressure calibration mode.

[0086] Furthermore, the static pressure detection device provided by the present invention includes a gas container 5 comprising: a gas inlet channel 51, a gas outlet channel 52, and a gas containment cavity; the cross-sectional area of ​​the gas containment cavity is at least three times the cross-sectional area of ​​the gas inlet channel 51 and at least three times the cross-sectional area of ​​the gas outlet channel 52; and the corners at the connections between the gas inlet channel 51, the gas outlet channel 52, and the gas containment cavity are all greater than 75°.

[0087] Specifically, such as Figure 1 As shown, the cross-sectional area of ​​the gas container cavity is significantly larger than that of the gas inlet channel 51 and the gas outlet channel 52, and the corners where they connect are all greater than 75°. In this way, the gas pressure entering the gas container 5 from the gas source 1 can be effectively buffered to prevent the occurrence of "turbulence" and thus make the pressure inside the gas container more stable.

[0088] The static pressure detection device provided by this invention, through the gas container with a structure design that is small at both ends and large in the middle, effectively improves the stability of the pressure inside the gas container, thereby also improving the stability of the blood pressure simulator's testing process for the blood pressure monitor in static pressure calibration mode.

[0089] The present invention also provides a blood pressure simulator including any of the static pressure detection devices described above.

[0090] Figure 2 This is one of the flowcharts of the static pressure detection method provided by the present invention, such as... Figure 2 As shown, the method includes the following steps:

[0091] Step 21: Connect the gas inlet of the sphygmomanometer to the gas outlet of the blood pressure simulator;

[0092] Step 22: Set a preset static pressure value on the blood pressure simulator;

[0093] Step 23: Start the air source so that the gas in the air source passes through the dehumidification device and enters the gas container;

[0094] Step 24: Detect the pressure inside the gas container using a pressure detection device to obtain the first pressure value;

[0095] Step 25: Compare the first pressure value with the preset static pressure value. Based on the comparison result, control the first gas flow control device or the second gas flow control device so that the difference between the first pressure value and the static pressure value is within the range of the first preset value. The first preset value range is the range corresponding to the stable pressure state of the blood pressure simulator. The first gas flow control device includes: an electric proportional valve and / or a solenoid valve K.

[0096] Specifically, when the first pressure value Difference from preset static pressure value If the reading is within the first preset value range, it indicates that the blood pressure simulator has reached a stable pressure state. In this embodiment of the invention, the first preset value range is ±0.5 mmHg. Since the industry error standard for blood pressure monitors is 3 mmHg, the detection method provided by this invention has a detection accuracy far exceeding the industry standard.

[0097] The static pressure detection method provided by this invention detects a first pressure value inside a gas container using a pressure detection device, compares the first pressure value with a preset static pressure value, and controls a first gas flow control device or a second gas flow control device based on the comparison result to ensure that the difference between the first pressure value and the static pressure value is within a first preset value range. This ensures that the pressure inside the gas container is always kept within the error range of the preset pressure value, thereby simultaneously ensuring that the pressure value detected by the blood pressure monitor is always kept within the error range of the preset pressure value, and thus improving the testing accuracy of the blood pressure monitor by the blood pressure simulator in static pressure calibration mode.

[0098] Furthermore, the following section elaborates on how to control the first gas flow control device or the second gas flow control device based on the comparison results, so that the difference between the first pressure value and the static pressure value is within a first preset value range. Figure 3 As shown, Figure 3 The second static pressure detection method provided by the present invention, such as Figure 3 As shown, the method includes the following steps:

[0099] Step 31: Repeatedly monitor the absolute value of the first difference between the first pressure value and the preset static pressure value. If the absolute value of the first difference is greater than or equal to the second preset value, control the second gas flow control device or control the control value of the electro-proportional valve to gradually increase from the first control value until the absolute value of the first difference is less than the second preset value.

[0100] Specifically, the pressure sensor continuously samples the gas pressure inside the gas container 5 at a sampling frequency of Fs. The most recent n sampling data are as follows: (earliest) , ... (Recently). The first pressure value is the pressure data most recently collected by the barometric pressure sensor. Simultaneously, it can read the pre-stored values ​​controlled by the electro-proportional valve (which can be voltage-controlled or current-controlled), corresponding to the pre-stored values ​​at pressures of 0 mmHg, 100 mmHg, 200 mmHg, 300 mmHg, 400 mmHg, and 450 mmHg, respectively, denoted as S0, S100, S200, S300, S400, and S500.

[0101] In this embodiment of the invention, the second preset value can be 50 mmHg, when the absolute value of the first difference is greater than or equal to 50 mmHg, that is: When the pressure is ≥50 mmHg, it is in large step mode, indicating the first pressure value. Compared with the preset static pressure value The difference between the first pressure value and the static pressure value is relatively large. This can be achieved by rapidly inflating or deflating the air to make the difference less than the second preset value. More specifically, when... - When the pressure is ≤-50 mmHg, it indicates that the pressure inside gas container 5 exceeds the preset static pressure value. The specific adjustment method can be as follows: Gas container 5 is vented by controlling the second gas flow control device (solenoid valve). The venting method is as follows: first, open the second gas flow control device (solenoid valve) tb1, then immediately close tb2 for a certain period of time, and then detect and repeat the judgment, thereby... - The error is within -50 mmHg. When there is no solenoid valve, the rapid venting stage is not considered; venting is done slowly via the micro-leakage valve until... - The error is within the range of -50 mmHg.

[0102] when - When the pressure is ≥50 mmHg, it indicates that the pressure inside gas container 5 is less than the preset static pressure value. The specific adjustment method is as follows: set the initial control value of the electro-proportional valve to a first control value X + a * tb0, and then gradually increase this first control value until the control value of the electro-proportional valve is Smax. Where X is the pre-stored value for the electro-proportional valve control, a is a coefficient obtained experimentally, tb0 is the dwell time in this stage (the dwell time in large-step mode), and Smax is the full power of the electro-proportional valve. In this embodiment of the invention, the pre-stored value is the pre-stored value corresponding to 450 mmHg, i.e., S500.

[0103] Since the first pressure value is the pressure data value most recently collected by the pressure sensor. Therefore, It is in a constant state of change. Therefore, the control value of the electric proportional valve will change according to... The value will be adjusted accordingly. When the updated value... Compared with the preset static pressure value If the absolute value is still greater than or equal to 50 mmHg, the control value of the electric proportional valve can be continuously adjusted to further increase it, thereby increasing the intake speed of the gas container 5 until... - If the blood pressure is less than 50 mmHg, the large step mode cycle will end.

[0104] Furthermore, the setting of the first control value S500+a*tb0 must adhere to the following requirements: the electro-proportional valve control value should not be too large. If it is too large, the pressure inside the gas container 5 will rise and exceed the limit within an extreme time, causing the blood pressure monitor reading to exceed the sensor's limit value and damaging the sensor. Conversely, if the electro-proportional valve control value is too small, the inflation speed of the gas container 5 will be slow, reducing the testing efficiency of the blood pressure simulator in static pressure calibration mode. Therefore, the pre-stored value X, the coefficient a, and the dwell time tb0 in this stage need to be adjusted according to the actual situation.

[0105] The static pressure detection method provided by the present invention, by gradually increasing the first control value to the control value corresponding to the full power of the electric proportional valve in the large step mode, allows for more precise control of the inflation speed and pressure of the gas container 5, avoiding damage to the blood pressure sensor caused by instantaneous high pressure or high-speed inflation.

[0106] Step 32: Repeatedly monitor the absolute value of the second difference between the first pressure value and the preset static pressure value. If the absolute value of the second difference is greater than or equal to the third preset value and less than the second preset value, control the second gas flow control device or control the electro-proportional valve at the second control value until the absolute value of the second difference is less than the third preset value; wherein the second control value is less than the first control value.

[0107] Specifically, in this embodiment of the invention, the third preset value can be 10 mmHg, that is, when the absolute value of the second difference is greater than or equal to 50 mmHg. - When the blood pressure is ≥10 mmHg, it is in medium-speed mode.

[0108] if - If the pressure is ≤-10 mmHg, the second gas flow control device is activated. The solenoid valve is opened for time tm1 and immediately closed for time tm2, then the process is repeated. Here, tm1 is approximately tb1 / 5, and tb2 is approximately tb2 / 3. The second gas flow control device is deactivated when the difference between the first pressure value and the static pressure value exceeds -15 mmHg.

[0109] like - When the pressure is ≥10 mmHg, the control value of the electro-proportional valve is set to the second control value. The electro-proportional valve is controlled at the second control value until the difference between the first pressure value and the static pressure value is less than 10 mmHg. The second control value is: The preset value corresponding to +100 mmHg (obtained by linear interpolation from existing storage if not stored) and this second control value is less than the first control value. Since the difference between the first pressure value and the static pressure value is relatively close in the intermediate step mode, using the first control value to inflate or deflate the gas container may damage the blood pressure monitor sensor.

[0110] The method provided by this invention, in the intermediate mode, adjusts the pressure inside the gas container by means of a second control value, which can accurately match the required pressure difference, thereby achieving high-precision control of the pressure and further improving the testing accuracy of the blood pressure simulator for the blood pressure monitor in the static pressure calibration mode.

[0111] Step 33: Repeatedly monitor the absolute value of the third difference between the first pressure value and the preset static pressure value. If the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value, control the second gas flow control device or control the electro-proportional valve at a third control value to make the absolute value of the third difference less than the first preset value. The third control value is determined based on multiple pressure values ​​collected in real time by the pressure detection device, and the third control value is less than the second control value.

[0112] Specifically, when the absolute value of the third difference is greater than 10 mmHg, - When the blood pressure is greater than 0.5 mmHg, the mode is small step mode.

[0113] if - If the pressure is 0.5 mmHg, the second gas flow control device will be activated until the difference between the first pressure value and the static pressure value is greater than -0.5 mmHg, at which point the second gas flow control device will be deactivated.

[0114] if - If the g pressure is greater than 0.5 mmHg, then the control value of the electro-proportional valve will be set to the third control value, that is: the third control value is... The corresponding preset value (if not stored, obtained by linear interpolation from existing storage). The third control value is calculated according to the following formula:

[0115] .

[0116] in, This is the control value of the proportional valve corresponding to the next sampling point. The current sampling point's proportional valve control value, i.e. The corresponding preset value; r, s, and t are correction parameters obtained experimentally. It can be seen that this third control value is continuously updated based on the pressure data collected in real time by the pressure detection device.

[0117] The method provided by this invention determines a third control value by collecting multiple pressure values ​​in real time through a pressure detection device, and controls the opening of an electro-proportional valve based on the continuously updated third control value. This allows for more precise and stable adjustment of the pressure inside the gas container, thereby minimizing measurement errors caused by pressure fluctuations or instability. This further improves the testing accuracy and efficiency of the blood pressure simulator for blood pressure monitors in static pressure calibration mode.

[0118] Step 34: Repeatedly monitor the absolute value of the fourth difference between the first pressure value and the preset static pressure value. If the absolute value of the fourth difference is less than the first preset value, enter the pressure stabilization state and stop the adjustment.

[0119] Specifically, | - When | < 0.5 mmHg, it is in static mode. In this mode, no further pressure adjustment is needed inside gas container 5, unless | - If the absolute difference is greater than 0.5 mmHg, repeat steps 31-34 until | - | <0.5 mmHg.

[0120] The static pressure detection method provided by this invention sets the difference range between the first pressure value and the static pressure value into multiple intervals, and sets different control modes (large step mode, medium step mode, small step mode, and static mode) for the control value of the electro-proportional valve according to these multiple intervals. This enables different adjustment methods to be used for different pressure states in the gas container 5, so that the target pressure state can be reached quickly and stably, thereby improving the testing efficiency and accuracy of the blood pressure simulator for the blood pressure monitor in the static pressure calibration mode.

[0121] Furthermore, the first moment when the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value is determined. Based on the first moment, during the period until the end of this static pressure test, if the absolute value of the third difference is greater than the third preset value and less than or equal to the fourth preset value, the second gas flow control device or the electro-proportional valve is controlled at the third control value to make the absolute value of the third difference less than the first preset value.

[0122] Specifically, in this embodiment of the invention, the fourth preset value is 15 mmHg. The condition where the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value corresponds to a small-step mode. In this small-step mode, if unexpected situations occur (e.g., electro-proportional valve vibration or air pipe bending), causing 10 mmHg > | - If the pressure is greater than 15 mmHg, the absolute difference between the first pressure value and the static pressure value will still be less than the first preset value by controlling the second gas flow control device or controlling the electro-proportional valve at the third control value. This is because if these unexpected situations occur and the system returns to the medium-step mode or large-step mode for readjustment, the following problems will occur:

[0123] On the one hand, excessively large adjustments may damage the blood pressure monitor's sensor or other mechanical or electronic components, thus reducing detection efficiency. On the other hand, it may require a longer time to adjust and calibrate the blood pressure monitor, thereby reducing detection efficiency.

[0124] Therefore, to improve detection efficiency, it is necessary to record the moment of first entry into small-step mode, and using this first moment as a baseline, during the period until the end of this static pressure test, if 10 mmHg > | - If the value is greater than 15 mmHg, the gas container will be filled or depressurized according to the small step control method until the absolute value of the third difference is less than the first preset value (0.5 mmHg).

[0125] The static pressure detection method provided by this invention, by statistically analyzing the moment of first entering the small-step mode and using that moment as a benchmark, if, during the period until the end of this static pressure detection, the absolute value of the third difference is greater than the third preset value and less than or equal to the fourth preset value, the gas container is still filled or depressurized according to the small-step mode control method, thereby effectively improving the efficiency of static pressure detection.

[0126] Furthermore, the following section elaborates on how to determine the implementation scheme for the third control value:

[0127] Determine whether the multiple pressure values ​​detected by the pressure detection device are the multiple pressure values ​​corresponding to the current detection state; if the multiple pressure values ​​are the multiple pressure values ​​corresponding to the current detection state, determine the third control value based on the multiple pressure values; if the multiple pressure values ​​are not the multiple pressure values ​​corresponding to the current detection state, clear the multiple pressure values ​​collected in the buffer, re-collect multiple pressure data, and determine the third control value based on the re-collected multiple pressure data.

[0128] Specifically, the so-called current detection state can have several different scenarios. One is the transition from one static pressure detection state to another, such as switching from a static pressure detection of 60 mmHg to one of 120 mmHg. Another is a situation where, although the current static pressure detection state is in progress, an unexpected event such as pipe detachment could lead to severe gas leakage from the gas container. In these cases, it is necessary to clear the pressure sampling values ​​in the buffer and re-collect pressure values ​​to calculate the third control value. This is because some of the pressure sampling values ​​in the buffer still correspond to the sampling values ​​from the previous detection state. If the sampling values ​​from the previous detection state are used to calculate the third control value, the calculation accuracy of the third control value will be low, resulting in insufficient precision in the gas pressure regulation of the gas container. This leads to a decrease in both the testing accuracy and efficiency of the blood pressure simulator in static pressure calibration mode.

[0129] The static pressure detection provided by this invention improves the testing accuracy and efficiency of blood pressure monitors in static pressure calibration mode by determining whether the multiple pressure values ​​detected by the pressure detection device are the multiple pressure values ​​corresponding to the current detection state and calculating the third control value according to different situations.

[0130] Furthermore, the present invention also includes: repeatedly monitoring the difference between the first pressure value and the preset static pressure value, and controlling the solenoid valve K to ensure that the difference between the first pressure value and the static pressure value is within the range of the first preset value.

[0131] Specifically, because the solenoid valve K is charged and discharged quickly, this invention can control the solenoid valve K to make the difference between the first pressure value and the static pressure value within the first preset value range (0.5 mmHg) more quickly, thereby improving the efficiency of static pressure detection.

[0132] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4As shown, the electronic device may include: a processor 410, a communication interface 820, a memory 430, and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 communicate with each other through the communication bus 440. The processor 410 can call logical instructions in the memory 430 to execute a static pressure detection method, which includes:

[0133] Connect the gas inlet of the sphygmomanometer to the gas outlet of the blood pressure simulator;

[0134] Set a preset static pressure value on the blood pressure simulator;

[0135] Turn on the air source so that the gas in the air source passes through the dehumidification device and enters the gas container;

[0136] The pressure inside the gas container is detected by a pressure detection device to obtain the first pressure value;

[0137] The first pressure value is compared with a preset static pressure value. Based on the comparison result, the first gas flow control device or the second gas flow control device is controlled so that the difference between the first pressure value and the static pressure value is within a first preset value range; the first preset value range is the range corresponding to the blood pressure simulator in a stable pressure state.

[0138] The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K.

[0139] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part 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 the present 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.

[0140] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being able to be stored on a non-transitory computer-readable storage medium, the computer program being executed by a processor, the computer being able to execute the static pressure detection method provided by the above methods, the method including: connecting the gas inlet of the sphygmomanometer to the gas outlet of the blood pressure simulator;

[0141] Set a preset static pressure value on the blood pressure simulator;

[0142] Turn on the air source so that the gas in the air source passes through the dehumidification device and enters the gas container;

[0143] The pressure inside the gas container is detected by a pressure detection device to obtain the first pressure value;

[0144] The first pressure value is compared with a preset static pressure value. Based on the comparison result, the first gas flow control device or the second gas flow control device is controlled so that the difference between the first pressure value and the static pressure value is within a first preset value range; the first preset value range is the range corresponding to the blood pressure simulator in a stable pressure state.

[0145] The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K.

[0146] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the static pressure detection method provided by the methods described above, the method comprising: connecting the gas inlet of a sphygmomanometer to the gas outlet of a blood pressure simulator;

[0147] Set a preset static pressure value on the blood pressure simulator;

[0148] Turn on the air source so that the gas in the air source passes through the dehumidification device and enters the gas container;

[0149] The pressure inside the gas container is detected by a pressure detection device to obtain the first pressure value;

[0150] The first pressure value is compared with a preset static pressure value. Based on the comparison result, the first gas flow control device or the second gas flow control device is controlled so that the difference between the first pressure value and the static pressure value is within a first preset value range; the first preset value range is the range corresponding to the blood pressure simulator in a stable pressure state.

[0151] The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K.

[0152] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0153] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which can be a personal computer or a server).

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A static pressure detection device, characterized in that, It includes a gas source, a gas container, a pressure detection device, and a dehumidification device; a first gas flow control device is provided between the gas source and the gas container; A gas outlet is provided on the gas container, and the gas outlet is used to communicate with the gas inlet of the sphygmomanometer; The pressure detection device is used to detect the pressure inside the gas container; the first gas flow control device is used to adjust the gas flow rate from the gas source to the gas container according to the pressure value detected by the pressure detection device, so that the pressure inside the gas container reaches the target pressure value; the first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K; The outlet of the gas source is connected to the inlet of the dehumidification device; the outlet of the dehumidification device is connected to one end of the first gas flow control device, and the other end of the first gas flow control device is connected to the inlet of the gas container; A second gas flow control device is installed in the gas path between the outlet of the gas container and the pressure detection device; The dehumidification device includes: an oil-water separator, a water container, and a heating device; The water container is located below the oil-water separation mechanism and is used to collect the liquid separated by the oil-water separation mechanism; the heating device is located on the water container and is used to heat the liquid inside the water container. It also includes a liquid drying device; the liquid drying device is used to disperse the steam heated inside the water container; The gas container includes: a gas inlet channel, a gas outlet channel, and a gas containing cavity; the cross-sectional area of ​​the gas containing cavity is at least three times the cross-sectional area of ​​the gas inlet channel and at least three times the cross-sectional area of ​​the gas outlet channel; The angles at the connections between the gas inlet channel, the gas outlet channel, and the gas accommodating cavity are all greater than 75°.

2. A blood pressure simulator, characterized in that, Includes the static pressure detection device as described in claim 1.

3. A method for static pressure detection using the blood pressure simulator of claim 2, characterized in that, include: Connect the gas inlet of the sphygmomanometer to the gas outlet of the blood pressure simulator; Set a preset static pressure value on the blood pressure simulator; Turn on the air source so that the gas in the air source passes through the dehumidification device and enters the gas container; The pressure inside the gas container is detected by a pressure detection device to obtain the first pressure value; The first pressure value is compared with a preset static pressure value. Based on the comparison result, the first gas flow control device or the second gas flow control device is controlled so that the absolute difference between the first pressure value and the static pressure value is within a first preset value range; the first preset value range is the range corresponding to the blood pressure simulator in a stable state. The first gas flow control device includes: an electro-proportional valve and / or a solenoid valve K.

4. The static pressure detection method according to claim 3, characterized in that, Based on the comparison result, controlling the first gas flow control device or the second gas flow control device so that the absolute difference between the first pressure value and the static pressure value falls within a first preset value range includes: The absolute value of the first difference between the first pressure value and the preset static pressure value is repeatedly monitored. When the absolute value of the first difference is greater than or equal to the second preset value, the control value of the second gas flow control device or the control value of the electro-proportional valve is gradually increased from the first control value until the absolute value of the first difference is less than the second preset value. The absolute value of the second difference between the first pressure value and the preset static pressure value is repeatedly monitored. If the absolute value of the second difference is greater than or equal to the third preset value and less than the second preset value, the second gas flow control device or the electro-proportional valve is controlled at the second control value until the absolute value of the second difference is less than the third preset value; wherein the second control value is less than the first control value. Repeatedly monitor the absolute value of the third difference between the first pressure value and the preset static pressure value. If the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value, control the second gas flow control device or control the electro-proportional valve at the third control value until the absolute value of the third difference is less than the first preset value. The third control value is determined based on multiple pressure values ​​collected in real time by the pressure detection device; and the third control value is less than the second control value. Repeatedly monitor the absolute value of the fourth difference between the first pressure value and the preset static pressure value. If the absolute value of the fourth difference is less than the first preset value, enter the pressure stabilization state and stop the adjustment.

5. The static pressure detection method according to claim 4, characterized in that, The first moment when the absolute value of the third difference is greater than or equal to the first preset value and less than the third preset value is determined. Based on the first moment, during the period until the end of this static pressure test, if the absolute value of the third difference is greater than the third preset value and less than or equal to the fourth preset value, the second gas flow control device or the electro-proportional valve is controlled at a third control value to make the absolute value of the third difference less than the first preset value.

6. The static pressure detection method according to claim 4, characterized in that, The third control value is determined based on multiple pressure values ​​collected in real time by the pressure detection device, including: Determine whether the multiple pressure values ​​detected by the pressure detection device are the multiple pressure values ​​corresponding to the current detection state; if the multiple pressure values ​​are the multiple pressure values ​​corresponding to the current detection state, determine the third control value based on the multiple pressure values; If the multiple pressure values ​​are not the multiple pressure values ​​corresponding to the current detection state, clear the multiple pressure values ​​collected in the cache, and determine the third control value by re-collecting multiple pressure data.

7. The static pressure detection method according to claim 3, characterized in that, Based on the comparison result, the first gas flow control device is controlled such that the difference between the first pressure value and the static pressure value falls within a first preset value range, including: The difference between the first pressure value and the preset static pressure value is repeatedly monitored, and the difference between the first pressure value and the static pressure value is kept within the first preset value range by controlling the solenoid valve K.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the static pressure detection method as described in any one of claims 3 to 7.

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