Blood pressure measurement device pressure measurement control method, device and electronic device

Abstract

The application discloses a blood pressure measuring device pressure measuring control method and device, and belongs to the technical field of electronic devices. The method comprises the following steps: in the process of measuring the blood pressure of a user by using a blood pressure measuring device, collecting the pressure signal and the piezoelectric signal generated by the brachial artery pulsation of the current measured user in real time; filtering the pressure signal and the piezoelectric signal respectively to obtain the oscillation wave signal and the piezoelectric band communication signal; determining the target signal position of the piezoelectric band communication signal corresponding to each brachial artery pulsation according to the oscillation wave signal, and obtaining the signal intensity of the piezoelectric band communication signal at the target signal position; and controlling the pressure stop of the blood pressure measuring device according to the signal intensity. The method combines the real-time measured pressure signal and the piezoelectric signal of the measured user, so that the blood pressure measuring device can determine the pressure stop for the individual measured user, which helps to stop the pressure in time and effectively improves the blood pressure measuring experience of the measured user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to a pressure measurement control method and device of a blood pressure measurement device, an electronic device, and a computer readable storage medium. BACKGROUND

[0002] The blood pressure measurement device adopting the pressure reduction measurement method has two stages of blood pressure measurement: a pressure increasing stage and a pressure reduction stage. In the pressure increasing stage, the air pump of the sphygmomanometer inflates the air bag of the cuff to press the brachial artery of the user to be measured to a certain pressure value to block the blood flow of the brachial artery of the user to be measured. Then, the pressure increasing is stopped, and the pressure reduction stage is entered, and the air valve slowly deflates, and in this process, the pulsatile signal of the brachial artery of the user to be measured is detected, and the systolic and diastolic blood pressure values of the user to be measured are measured according to the signal. The pressure reduction rate in the pressure reduction stage has a clear standard of medical devices, and if the pressure in the pressure increasing stage is too high, not only the whole blood pressure measurement process will be lengthened, but also the user will have a long time of cuff compression on the brachial artery, resulting in a mark on the user's arm, and the user will have obvious discomfort. It can be seen that the stop pressure value in the pressure increasing stage has an important influence on the user experience of the blood pressure measurement process.

[0003] The oscillographic method in the prior art calculates the stop pressure value in the pressure increasing stage according to the statistical relationship between the envelope of the oscillation wave and the systolic and diastolic pressures, and does not have individual accuracy.

[0004] It can be seen that the pressure measurement control method of the blood pressure measurement device in the prior art still needs to be improved. SUMMARY

[0005] Embodiments of the present application provide a pressure measurement control method and device of a blood pressure measurement device, which are used to solve the problem that the stop pressure of the pressure increasing stage of the blood pressure measurement device does not have individual accuracy, resulting in discomfort of some users in the process of measuring blood pressure by the blood pressure measurement device.

[0006] In a first aspect, the embodiments of the present application provide a pressure measurement control method of a blood pressure measurement device, comprising:

[0007] In the process of measuring the blood pressure of a user by the blood pressure measurement device, a pressure signal generated by the brachial artery pulsation of the current user to be measured and a piezoelectric signal are collected in real time, wherein the pressure signal is the pressure signal in the air bag of the cuff of the blood pressure measurement device, and the piezoelectric signal is collected by a piezoelectric device arranged on the side of the cuff abutting the brachial artery of the current user to be measured;

[0008] The pressure signal is filtered to obtain an oscillation wave signal, and the piezoelectric signal is filtered to obtain a piezoelectric bandpass signal;

[0009] According to the oscillation wave signal, a target signal position of the piezoelectric belt communication signal corresponding to each brachial artery pulse is determined;

[0010] The signal intensity of the piezoelectric belt communication signal at the target signal position is obtained;

[0011] According to the signal intensity, the pressure stop of the blood pressure measuring device is controlled.

[0012] Optionally, the controlling of the pressure stop of the blood pressure measuring device according to the signal intensity comprises:

[0013] The change trend of the signal intensity at the target signal position and a plurality of target signal positions before the target signal position is obtained;

[0014] In response to the signal intensity at the target signal position being less than a preset signal intensity threshold and the change trend being a decreasing trend, the target signal position is determined as a pressure stop time point;

[0015] According to the signal value of the pressure signal at the pressure stop time point, a pressure stop pressure is determined.

[0016] Optionally, the determining of the target signal position of the piezoelectric belt communication signal corresponding to each brachial artery pulse according to the oscillation wave signal comprises:

[0017] The pressure signal acquisition time point corresponding to the peak position of the pressure oscillation wave signal is taken as the target signal position of the piezoelectric belt communication signal corresponding to each brachial artery pulse.

[0018] Optionally, the obtaining of the signal intensity of the piezoelectric belt communication signal at the target signal position comprises:

[0019] The piezoelectric belt communication signal within a preset time range before and after the target signal position is determined as a de-noised piezoelectric belt communication signal;

[0020] The root mean square of the de-noised piezoelectric belt communication signal is obtained as the signal intensity of the piezoelectric belt communication signal at the target signal position.

[0021] Optionally, the filtering processing of the pressure signal to obtain an oscillation wave signal comprises:

[0022] The pressure signal is subjected to a band-pass filtering processing of a first preset frequency range to obtain an oscillation wave signal.

[0023] Optionally, the filtering processing of the piezoelectric signal to obtain a piezoelectric belt communication signal comprises:

[0024] The piezoelectric signal is subjected to a band-pass filtering processing of a second preset frequency range to obtain a first piezoelectric belt communication signal.

[0025] performing band-pass filtering processing on the piezoelectric signal in a third preset frequency range to obtain a second piezoelectric band-pass signal; and

[0026] performing band-pass filtering processing on the piezoelectric signal in a fourth preset frequency range to obtain a third piezoelectric band-pass signal, wherein the second preset frequency range is greater than or equal to a first frequency and less than or equal to a second frequency, the third preset frequency range is greater than the first frequency and less than or equal to the second frequency, and the fourth preset frequency range is greater than or equal to the first frequency and less than the second frequency;

[0027] subtracting the second piezoelectric band-pass signal from the first piezoelectric band-pass signal to obtain a first frequency band piezoelectric signal;

[0028] subtracting the third piezoelectric band-pass signal from the first piezoelectric band-pass signal to obtain a second frequency band piezoelectric signal;

[0029] superimposing the first frequency band piezoelectric signal and the second frequency band piezoelectric signal to obtain a piezoelectric band-pass signal.

[0030] In a second aspect, an embodiment of the present application provides a pressure measurement control device of a blood pressure measuring device, comprising:

[0031] a pressure signal and piezoelectric signal acquisition module, configured to acquire, in real time, a pressure signal and a piezoelectric signal generated by brachial artery pulsation of a current user being measured in a process of measuring blood pressure of the user by using a blood pressure measuring device, wherein the pressure signal is an internal pressure signal of a gas bag of a cuff of the blood pressure measuring device, and the piezoelectric signal is acquired by a piezoelectric device arranged on a side of the cuff adhering to the brachial artery of the current user being measured;

[0032] a filtering module, configured to perform filtering processing on the pressure signal to obtain an oscillation wave signal, and perform filtering processing on the piezoelectric signal to obtain a piezoelectric band-pass signal;

[0033] a target signal position determination module, configured to determine a target signal position of the piezoelectric band-pass signal corresponding to each brachial artery pulsation according to the oscillation wave signal;

[0034] a signal intensity acquisition module, configured to acquire a signal intensity of the piezoelectric band-pass signal at the target signal position;

[0035] a pressurization stop pressure control module, configured to control a pressurization stop pressure of the blood pressure measuring device according to the signal intensity.

[0036] Optionally, the pressurization stop pressure control module is further configured to acquire a change trend of signal intensity at the target signal position and a plurality of target signal positions before the target signal position.

[0037] determining the target signal position as a pressurization stop time point in response to the signal intensity at the target signal position being less than a preset signal intensity threshold and the change trend being a decreasing trend;

[0038] determining a pressurization stop pressure according to a signal value of the pressure signal at the pressurization stop time point.

[0039] Optionally, the target signal position determining module is further used for:

[0040] taking a pressure signal acquisition time point corresponding to a peak value position of the pressure oscillation wave signal as the target signal position of each brachial artery pulse corresponding to the piezoelectric bandpass signal.

[0041] Optionally, the signal intensity obtaining module is further used for:

[0042] determining the piezoelectric bandpass signal in a preset time range before and after the target signal position as a de-noised piezoelectric bandpass signal.

[0043] obtaining a root mean square of the de-noised piezoelectric bandpass signal as the signal intensity of the piezoelectric bandpass signal at the target signal position.

[0044] Optionally, the filtering processing of the pressure signal to obtain an oscillation wave signal comprises:

[0045] performing a bandpass filtering processing of a first preset frequency range on the pressure signal to obtain an oscillation wave signal.

[0046] Optionally, the filtering processing of the piezoelectric signal to obtain a piezoelectric bandpass signal comprises:

[0047] performing a bandpass filtering processing of a second preset frequency range on the piezoelectric signal to obtain a first piezoelectric bandpass signal;

[0048] performing a bandpass filtering processing of a third preset frequency range on the piezoelectric signal to obtain a second piezoelectric bandpass signal; and

[0049] performing a bandpass filtering processing of a fourth preset frequency range on the piezoelectric signal to obtain a third piezoelectric bandpass signal, wherein the second preset frequency range is greater than or equal to a first frequency and less than or equal to a second frequency, the third preset frequency range is greater than the first frequency and less than or equal to the second frequency, and the fourth preset frequency range is greater than or equal to the first frequency and less than the second frequency.

[0050] subtracting the second piezoelectric bandpass signal from the first piezoelectric bandpass signal to obtain a first frequency band piezoelectric signal;

[0051] Subtracting the third piezoelectric band communication signal from the first piezoelectric band communication signal, a second frequency band piezoelectric signal is obtained.

[0052] Superimposing the first frequency band piezoelectric signal and the second frequency band piezoelectric signal, a piezoelectric band communication signal is obtained.

[0053] In a third aspect, the embodiments of the present application further disclose an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to realize the pressure measurement control method of the blood pressure measuring device.

[0054] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the steps of the pressure measurement control method of the blood pressure measuring device disclosed by the embodiments of the present application.

[0055] The pressure measurement control method of the blood pressure measuring device disclosed by the embodiments of the present application realizes the individual accuracy of the stop pressure value calculation in the pressure increasing stage by combining the pressure signal of the measured user and the piezoelectric signal measured in real time, and calculating the pressure stop pressure for the current measured user according to the change trend of the piezoelectric signal, so that the blood pressure measuring device can determine the pressure stop pressure suitable for the measured user, which helps to stop the pressure in time and effectively improves the blood pressure measurement experience of the measured user.

[0056] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the embodiments can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0058] Figure 1 is a pressure measurement control method flow chart of the blood pressure measuring device of the embodiments of the present application;

[0059] Figure 2 is a structural schematic diagram of the blood pressure measuring device disclosed in the embodiments of the present application;

[0060] Figure 3is another structural schematic diagram of a blood pressure measuring device disclosed in the embodiments of the present application;

[0061] Figure 4 is a pressure signal waveform schematic diagram collected in the embodiments of the present application;

[0062] Figure 5 is a piezoelectric signal waveform schematic diagram collected in the embodiments of the present application;

[0063] Figure 6 is a waveform schematic diagram of the oscillation wave signal and the piezoelectric band communication signal obtained after filtering in the embodiments of the present application;

[0064] Figure 7 is a pressure measuring control device structural schematic diagram of a blood pressure measuring device in an embodiment of the present application;

[0065] Figure 8 a block diagram of an electronic device for performing the method according to the present application is schematically shown; and

[0066] Figure 9 a storage unit for holding or carrying program code implementing the method according to the present application is schematically shown. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0068] The blood pressure measuring device pressure measuring control method disclosed in the embodiments of the present application is as shown in Figure 1 The method comprises steps 110 to 150.

[0069] Step 110, in the process of measuring the blood pressure of a user by using a blood pressure measuring device, real-time collection of a pressure signal and a piezoelectric signal generated by the brachial artery pulsation of the current user being measured.

[0070] The pressure signal is the pressure signal in the air bag of the cuff of the blood pressure measuring device, and the piezoelectric signal is collected by a piezoelectric device arranged on the side of the cuff adhering to the brachial artery of the current user being measured.

[0071] The blood pressure measuring device pressure measuring control method disclosed in the embodiments of the present application is applied to the process of measuring the blood pressure of a user by using a blood pressure measuring device for taking a pressure measurement.

[0072] The blood pressure measuring device comprises a cuff with an inflatable air bag, and the cuff is provided with a pressure detection device and a piezoelectric device. The specific embodiments of real-time acquisition of the pressure signals and piezoelectric signals generated by the brachial artery pulsation of the current user in the process of measuring the blood pressure of the user by using the blood pressure measuring device are described below in combination with the structural schematic diagrams of the blood pressure measuring device shown in Figure 2 and Figure 3

[0073] As shown in Figure 2 The blood pressure measuring device comprises a cuff 200 and a signal output device 210, wherein the cuff 200 further comprises an air bag 201, a pressure detection device 202 and a piezoelectric device 203. The pressure detection device 202 and the piezoelectric device 203 are respectively in communication connection with the signal output device.

[0074] The pressure detection device 202 is configured to acquire the pressure signals in the air bag. The pressure detection device 202 is arranged in the air bag 201. In some embodiments of the present application, the pressure detection device 202 can be realized based on a pressure sensor. In the process of measuring the blood pressure, first, the air pump inflates the air bag 201, and the cuff applies pressure to the upper arm of the current user to block the blood flow of the brachial artery. Then, the air pump stops inflating and slowly releases the gas in the air bag 201 until the blood pressure measurement is completed. In the process of inflating and releasing the gas in the air bag 201, the pressure detection device 202 detects the pressure signals generated by the brachial artery pulsation. Moreover, in the process of measuring the blood pressure, as the amount of inflation in the air bag changes, the pressure applied to the upper arm by the cuff gradually increases and then gradually decreases.

[0075] The piezoelectric device 203 is arranged on the side of the cuff 200 that is in contact with the user's arm and is configured to acquire the piezoelectric signals generated by the brachial artery pulsation. In some embodiments of the present application, the piezoelectric device 203 can be realized based on a piezoelectric sensor. As described above, in the process of measuring the blood pressure, first, the air pump inflates the air bag 201, and the cuff applies pressure to the upper arm of the current user, and the cuff blocks the blood flow of the brachial artery. Then, the air pump stops inflating and slowly releases the gas in the air bag 201 until the blood pressure measurement is completed. In the process of inflating and releasing the gas in the air bag 201, the piezoelectric device 203 detects the piezoelectric signals generated by the pressure applied to the upper arm by the cuff 200. Moreover, in the process of measuring the blood pressure, as the amount of inflation in the air bag changes, the pressure applied to the upper arm by the cuff gradually increases and then gradually decreases. Correspondingly, the piezoelectric signals detected by the piezoelectric device 203 also change in a certain trend.

[0076] The signal output device 210 is used to output the pressure signals and the piezoelectric signals. ​

[0077] In some embodiments of the present application, the signal output device 210 can be implemented as a Bluetooth module or other short-range communication module to output the pressure signals detected by the pressure detection device 202 and the piezoelectric signals detected by the piezoelectric device 203 to a matched signal processing device through a non-contact communication connection.

[0078] In some other embodiments of the present application, the signal output device 210 can also be a signal output interface to output the pressure signals detected by the pressure detection device 202 and the piezoelectric signals detected by the piezoelectric device 203 to a signal processing device connected to a blood pressure measuring device for subsequent signal processing, such as calculating the pressure stop pressure or calculating the current blood pressure value of the measured user. The signal processing device can be a smart terminal with signal processing capability.

[0079] In some other embodiments of the present application, as shown in Figure 3 The blood pressure measuring device includes a cuff 300 and a signal processing device 310, and a gas bag 301, a pressure detection device 302, and a piezoelectric device 303 arranged on the cuff 300. The pressure detection device 302 and the piezoelectric device 303 are in communication connection with the signal processing device.

[0080] The pressure detection device 302 is configured to collect pressure signals in the gas bag 301; the piezoelectric device 303 is arranged on the side of the cuff 300 that is in contact with the user's arm and is configured to collect piezoelectric signals generated by the brachial artery pulsation; the signal processing device 310 is used to obtain the pressure signals and piezoelectric signals generated by the brachial artery pulsation collected by the cuff 300 worn on the user's arm, filter the pressure signals to obtain oscillation wave signals, and filter the piezoelectric signals to obtain piezoelectric band communication signals; then, the signal processing device 310 determines the target signal position corresponding to each brachial artery pulsation of the piezoelectric band communication signals according to the oscillation wave signals, and obtains the signal intensity of the piezoelectric band communication signals at the target signal position; finally, the signal processing device 310 controls the pressure stop pressure of the blood pressure measuring device according to the signal intensity.

[0081] The specific implementation of the subsequent processing of the pressure signals and piezoelectric signals is described below and will not be repeated here.

[0082] The structure of the gas bag 301 is the same as that of the gas bag 201 in Figure 2 and the working principle, which will not be repeated here.

[0083] The location, specific implementation method, and principle of pressure signal acquisition of the pressure detection device 302 are the same as those of the aforementioned pressure detection device 202, and will not be repeated here.

[0084] The location, specific implementation method, and principle of acquiring piezoelectric signals of the piezoelectric device 303 are the same as those of the aforementioned piezoelectric device 203, and will not be repeated here.

[0085] Figure 3 The blood pressure measuring device described in the text and Figure 2 The difference between the blood pressure measuring devices shown is that... Figure 3 The blood pressure measuring device shown is equipped with a signal processing device 310, which can process the pressure signal detected by the pressure detection device 302 and the piezoelectric signal detected by the piezoelectric device 303 to obtain the pressure stop pressure of the current user being tested.

[0086] exist Figure 2 and Figure 3 In the illustrated blood pressure measuring device, the piezoelectric device 203 includes a piezoelectric sensor element integrally formed with the cuff and disposed on the inner side of the cuff. When measuring a user's blood pressure, the piezoelectric sensor element is placed in close contact with the user's brachial artery. The inner side of the cuff refers to the side closest to the user's arm skin when measuring blood pressure. The piezoelectric sensor element can be a piezoelectric pad. The piezoelectric sensor element can be fixed to the cuff by adhesive or sewing.

[0087] The piezoelectric device 203 includes at least two piezoelectric sensor elements, and the piezoelectric signal is the superimposed piezoelectric signal of the at least two piezoelectric sensor elements. For example, the piezoelectric signal can be the sum of the amplitudes of the piezoelectric signals collected by the two piezoelectric sensor elements at the same time.

[0088] During blood pressure measurement, the brachial artery constricts as blood returns to the heart, narrowing to its narrowest point as blood volume increases. Conversely, it expands to its widest point as blood volume increases when the heart pumps blood out. The pressure values ​​at the widest and narrowest points are the diastolic and systolic blood pressure values. In measuring blood pressure using the blood pressure measuring device disclosed in this application, a cuff is strapped to the outside of the brachial artery. When the air bladder inflates to a pressure exceeding a certain high-pressure value, the brachial artery closes due to pressure. When the air bladder pressure is slightly below a certain high-pressure value, the brachial artery opens, allowing blood to flow through the brachial artery at the cuff's strap location, exerting pressure on the air bladder and cuff. The blood pressure measuring device disclosed in this application detects changes in air bladder pressure using a pressure detection device located within the cuff, obtaining a pressure signal. It also detects the pressure exerted by the cuff on the upper arm using a piezoelectric device, obtaining a piezoelectric signal.

[0089] In the process of measuring the blood pressure of the user by the blood pressure measuring device disclosed in the embodiments of the present application, the pressure signal of the pressurization stage detected by the pressure detection device of the blood pressure measuring device is as shown in FIG. 6. Figure 4 The curve in FIG. 6 reflects the change of the pressure value. Figure 4 The curve in FIG. 6 reflects the change of the pressure value.

[0090] In the process of measuring the blood pressure of the user by the blood pressure measuring device disclosed in the embodiments of the present application, the piezoelectric signal of the pressurization stage detected by the piezoelectric device of the blood pressure measuring device is as shown in FIG. 7. Figure 5 As can be seen from FIG. 7, the piezoelectric signal is a pulse signal with peak value change, the occurrence period of the pulse corresponds to the pulse cycle of the brachial artery, and the peak value of the pulse changes with the measurement time. Figure 5

[0091] In step 120, the pressure signal is filtered to obtain an oscillation wave signal, and the piezoelectric signal is filtered to obtain a piezoelectric bandpass signal.

[0092] After obtaining the pressure signal and the piezoelectric signal collected by the blood pressure measuring device, further, the pressure signal and the piezoelectric signal need to be filtered respectively to filter out the interference signal, so as to extract the signal with more accurate expression ability for the blood pressure value.

[0093] In some embodiments of the present application, the filtering of the pressure signal to obtain the oscillation wave signal includes bandpass filtering of the pressure signal in a first preset frequency range to obtain the oscillation wave signal. The first preset frequency range is a low frequency range. For example, the first preset frequency range can be greater than or equal to 0.8 Hz and less than or equal to 3.5 Hz. The pressure signal obtained after filtering is as shown in the upper signal waveform of FIG. 8. Figure 6 The curve in FIG. 8 reflects the change of the pressure value.

[0094] In some embodiments of the present application, a one-way 0.8-3.5 HZ first-order bandpass Butterworth filter can be used to perform bandpass filtering on the pressure signal to obtain the oscillation wave signal.

[0095] ​In some embodiments of the present application, the filtering of the piezoelectric signal to obtain a piezoelectric bandpass signal includes: performing a second pre-set frequency range bandpass filtering on the piezoelectric signal to obtain a first piezoelectric bandpass signal; performing a third pre-set frequency range bandpass filtering on the piezoelectric signal to obtain a second piezoelectric bandpass signal; and performing a fourth pre-set frequency range bandpass filtering on the piezoelectric signal to obtain a third piezoelectric bandpass signal, wherein the second pre-set frequency range is greater than or equal to a first frequency and less than or equal to a second frequency, the third pre-set frequency range is greater than the first frequency and less than or equal to the second frequency, and the fourth pre-set frequency range is greater than or equal to the first frequency and less than the second frequency; subtracting the second piezoelectric bandpass signal from the first piezoelectric bandpass signal to obtain a first frequency range piezoelectric signal; subtracting the third piezoelectric bandpass signal from the first piezoelectric bandpass signal to obtain a second frequency range piezoelectric signal; and superimposing the first frequency range piezoelectric signal and the second frequency range piezoelectric signal to obtain a piezoelectric bandpass signal.

[0096] The piezoelectric device (such as a piezoelectric sensor) in the pressurization stage is easily affected by the air pump motor, causing great interference to the collected piezoelectric signal. Through experiments, it is found that the signal obtained by superimposing two signals in the frequency range of 20 to 20.1 Hz and 39.9 to 40 Hz can obtain effective pulse signals while removing the interference of the air pump motor. In some embodiments of the present application, for example, the first frequency can be set to 20 Hz, the second frequency can be set to 40 Hz, and correspondingly, the second pre-set frequency range can be set to [20, 40] Hz, the third pre-set frequency range can be set to [20.1, 40] Hz, and the fourth pre-set frequency range can be set to [20, 39.9] Hz. Then, the piezoelectric signal is filtered using the above three pre-set frequency ranges, and then the signals obtained after filtering are operated to obtain a piezoelectric signal containing only signals in the frequency range of 20 to 20.1 Hz and 39.9 to 40 Hz.

[0097] For example, the piezoelectric signal is subjected to a band-pass filtering process of a second preset frequency range to obtain a first piezoelectric band-pass signal with a frequency range of [20, 40] Hz; the piezoelectric signal is subjected to a band-pass filtering process of a third preset frequency range to obtain a second piezoelectric band-pass signal with a frequency range of [20.1, 40] Hz; and the piezoelectric signal is subjected to a band-pass filtering process of a fourth preset frequency range to obtain a third piezoelectric band-pass signal with a frequency range of [20, 39.9] Hz. Then, the first piezoelectric band-pass signal is subtracted from the second piezoelectric band-pass signal to obtain a piezoelectric signal with a frequency range of [20, 20.1) Hz; and the first piezoelectric band-pass signal is subtracted from the third piezoelectric band-pass signal to obtain a piezoelectric signal with a frequency range of (39.9, 40] Hz. Finally, the piezoelectric signals in the two frequency ranges obtained by the subtraction are superimposed to obtain a piezoelectric band-pass signal with a frequency range of [20, 20.1) and (39.9, 40] Hz.

[0098] In an embodiment of the present application, the frequency value in the first preset frequency range is smaller than the frequency values in the second, third, and fourth preset frequency ranges.

[0099] In an embodiment of the present application, the filtering of the piezoelectric signal can be performed by using a second-order band-pass Butterworth filter. The piezoelectric signal obtained after the filtering process is shown in the following signal waveform. Figure 6

[0100] In step 130, the target signal position of the piezoelectric band-pass signal corresponding to each brachial artery pulsation is determined according to the oscillation wave signal.

[0101] After the foregoing filtering process, the pulsation signal generated by each brachial artery pulsation can be more intuitively displayed by the processed signal. However, the processed piezoelectric signal still has signal interference caused by the operation of the air pump. In an embodiment of the present application, the piezoelectric signal is further denoised according to the pressure signal.

[0102] In some embodiments of the present application, the determination of the target signal position of the piezoelectric band-pass signal corresponding to each brachial artery pulsation according to the oscillation wave signal includes: taking the sampling time point of the pressure oscillation wave signal at the peak position as the target signal position of the piezoelectric band-pass signal corresponding to each brachial artery pulsation. The sampling time point corresponding to each peak position of the pressure oscillation wave signal corresponds to one brachial artery pulsation. Therefore, the piezoelectric signal collected at the sampling time point corresponding to each peak position of the pressure oscillation wave signal can more accurately reflect the state of the brachial artery pulsation.

[0103] In step 140, the signal intensity of the piezoelectric band-pass signal at the target signal position is obtained.

[0104] ​After determining the target signal position of the piezoelectric belt communication signal corresponding to each brachial artery pulse, the signal strength of the piezoelectric signal at each target signal position is further calculated for pressure stop pressure judgment.

[0105] In some embodiments of the present application, the signal strength of the piezoelectric belt communication signal at the target signal position is obtained by determining the piezoelectric belt communication signal in a preset time range before and after the target signal position as a de-noised piezoelectric belt communication signal, and obtaining the root mean square of the de-noised piezoelectric belt communication signal as the signal strength of the piezoelectric belt communication signal at the target signal position.

[0106] The target signal position is a collection time point of the piezoelectric signal, and the preset time range may be, for example, 50 milliseconds. Taking the target signal position as t milliseconds as an example, the preset time range may be a time period of t-50 to t+50 milliseconds. In embodiments of the present application, the piezoelectric belt communication signal obtained by filtering the piezoelectric signal collected in each time period determined according to the target signal position is taken as the de-noised piezoelectric belt communication signal. Then, the root mean square of the de-noised piezoelectric belt communication signal is calculated, and the obtained root mean square is taken as the signal strength of the piezoelectric belt communication signal at the target signal position.

[0107] The specific implementation of calculating the root mean square of the signal data is described in the prior art, and will not be repeated in embodiments of the present application.

[0108] In step 150, the signal strength is used to control the pressure stop pressure of the blood pressure measuring device.

[0109] During blood pressure measurement, as the air bag is pressurized, the blood flow through the brachial artery decreases, and the signal strength of the piezoelectric signal detected by the piezoelectric sensor gradually decreases. When the signal strength of the piezoelectric signal changes from strong to weak and weak to a certain value, it indicates that the pressure at this time has blocked the blood flow in the blood vessel, that is, the air bag is pressurized to the brachial artery closed, and at this time, the pressure value detected by the pressure detection device is the stop pressure value in the pressurization stage.

[0110] In embodiments of the present application, the signal strength is used to control the pressure stop pressure of the blood pressure measuring device, including: obtaining the change trend of the signal strength at the target signal position and a plurality of target signal positions before the target signal position; in response to the signal strength at the target signal position being less than a preset signal strength threshold and the change trend being a decreasing trend, determining the target signal position as a pressure stop time point; and determining the pressure stop pressure according to the signal value of the pressure signal at the pressure stop time point.

[0111] The multiple signal target signal positions before the target signal position can be a specified number of target signal positions. Optionally, the preset signal intensity threshold can be determined according to a statistical result of the measured blood pressure data, for example, the preset signal intensity threshold can be set to 0.0004.

[0112] In some embodiments of the present application, during the process of collecting the piezoelectric signal in real time, after determining the signal intensity of the target signal position according to each collected piezoelectric signal, it is determined whether the calculated signal intensity is less than a preset judgment threshold, and in the case that the currently calculated signal intensity is less than or equal to the preset judgment threshold, the signal intensity at each target signal position after the current target signal position is recorded for determining the change trend of the signal intensity. Optionally, the preset judgment threshold is a signal intensity value greater than the preset signal intensity threshold. For example, the preset judgment threshold is 0.001.

[0113] Further, after determining that the currently calculated signal intensity is less than the preset judgment threshold, it is further determined whether the currently calculated signal intensity is less than the preset signal intensity threshold. And in the case that the currently calculated signal intensity is determined to be less than the preset signal intensity threshold, it is further determined whether the signal intensity from the signal intensity less than the preset judgment threshold to the currently calculated target signal position gradually decreases. If yes, it can be considered that the currently calculated target signal position is the pressure stopping time point, and if not, it can be considered that the currently calculated target signal position has not reached the pressure stopping time point, and the pressure needs to be continued.

[0114] After determining the pressure stopping time point, the pressure value represented by the pressure signal corresponding to the pressure stopping time point can be used as the pressure stopping pressure. The pressure is stopped at the pressure stopping time point corresponding to the pressure stopping pressure.

[0115] The blood pressure measurement device measurement control method disclosed by the embodiments of the present application can effectively avoid the discomfort of the brachial artery of some users caused by the overlong closing of the cuff due to the inflation pressure of the cuff when the statistical method is used to determine the pressure stop.

[0116] The blood pressure measurement device measurement control method disclosed by the embodiments of the present application can effectively avoid the discomfort of the brachial artery of some users caused by the overlong closing of the cuff due to the inflation pressure of the cuff when the statistical method is used to determine the pressure stop.

[0117] Further, by performing band-pass filtering on the piezoelectric signal at a specified frequency to obtain a piezoelectric signal of a specified frequency band, and further performing denoising processing on the piezoelectric signal of the specified frequency band obtained after filtering based on the pressure signal, the interference of the air pump of the blood pressure measurement device on the piezoelectric signal can be reduced, so as to improve the accuracy of calculating the pressure stop based on the signal strength of the piezoelectric signal.

[0118] The embodiments of the present application also disclose a blood pressure measurement device measurement control device, as shown in Figure 7 The device comprises:

[0119] The pressure signal and piezoelectric signal acquisition module 710 is configured to, in the process of measuring the blood pressure of a user by using a blood pressure measurement device, acquire a pressure signal and a piezoelectric signal generated by the brachial artery pulsation of a current user being measured in real time, wherein the pressure signal is an internal pressure signal of an air bag of a cuff of the blood pressure measurement device, and the piezoelectric signal is acquired by a piezoelectric device arranged on the side of the cuff that is attached to the brachial artery of the current user being measured;

[0120] The filtering module 720 is configured to perform filtering processing on the pressure signal to obtain an oscillation wave signal, and perform filtering processing on the piezoelectric signal to obtain a piezoelectric band communication signal.

[0121] determine a target signal position of the piezoelectric belt communication signal corresponding to each brachial artery pulse according to the oscillation wave signal;

[0122] acquire a signal strength of the piezoelectric belt communication signal at the target signal position;

[0123] control a press-off pressure of the blood pressure measuring device according to the signal strength.

[0124] In some embodiments of the present application, the press-off pressure control module 750 is further configured to: acquire a change trend of the signal strength at the target signal position and a plurality of target signal positions before the target signal position;

[0125] determine the target signal position as a press-off time point in response to the signal strength at the target signal position being less than a preset signal strength threshold and the change trend being a decreasing trend.

[0126] determine a press-off pressure according to a signal value of the pressure signal at the press-off time point.

[0127] In some embodiments of the present application, the target signal position determination module 730 is further configured to:

[0128] determine a pressure signal acquisition time point corresponding to a peak position of the pressure oscillation wave signal as the target signal position of the piezoelectric belt communication signal corresponding to each brachial artery pulse.

[0129] In some embodiments of the present application, the signal strength acquisition module 740 is further configured to:

[0130] determine the piezoelectric belt communication signal in a preset time range before and after the target signal position as a de-noised piezoelectric belt communication signal.

[0131] acquire a root mean square of the de-noised piezoelectric belt communication signal as the signal strength of the piezoelectric belt communication signal at the target signal position.

[0132] In some embodiments of the present application, the filtering processing on the pressure signal to obtain an oscillation wave signal comprises:

[0133] performing a band-pass filtering processing on the pressure signal in a first preset frequency range to obtain an oscillation wave signal.

[0134] In some embodiments of the present application, the filtering processing on the piezoelectric signal to obtain a piezoelectric belt communication signal comprises:

[0135] performing band-pass filtering processing on the piezoelectric signal in a second preset frequency range to obtain a first piezoelectric band-pass signal;

[0136] performing band-pass filtering processing on the piezoelectric signal in a third preset frequency range to obtain a second piezoelectric band-pass signal; and

[0137] performing band-pass filtering processing on the piezoelectric signal in a fourth preset frequency range to obtain a third piezoelectric band-pass signal, wherein the second preset frequency range is greater than or equal to a first frequency and less than or equal to a second frequency, the third preset frequency range is greater than the first frequency and less than or equal to the second frequency, and the fourth preset frequency range is greater than or equal to the first frequency and less than the second frequency;

[0138] subtracting the second piezoelectric band-pass signal from the first piezoelectric band-pass signal to obtain a first frequency band piezoelectric signal;

[0139] subtracting the third piezoelectric band-pass signal from the first piezoelectric band-pass signal to obtain a second frequency band piezoelectric signal;

[0140] superimposing the first frequency band piezoelectric signal and the second frequency band piezoelectric signal to obtain a piezoelectric band-pass signal.

[0141] The pressure measurement control device of the blood pressure measurement device disclosed in the embodiments of the present application is used to implement the pressure measurement control method of the blood pressure measurement device described in the embodiments of the present application, and the specific implementation of each module of the device will not be described again, and can be referred to the specific implementation of the corresponding steps of the method embodiments.

[0142] The pressure measurement control device of the blood pressure measurement device disclosed in the embodiments of the present application is used to implement the pressure measurement control method of the blood pressure measurement device described in the embodiments of the present application, and the specific implementation of each module of the device will not be described again, and can be referred to the specific implementation of the corresponding steps of the method embodiments.

[0143] The pressure measurement control device of the blood pressure measurement device disclosed in the embodiments of the present application realizes the individual accuracy of the stop pressure value calculation in the pressurization stage by combining the pressure signals of the measured user measured in real time and the piezoelectric signals and calculating the pressurization stop pressure for the current measured user according to the change trend of the piezoelectric signals, so that the blood pressure measurement device can determine the pressurization stop pressure suitable for the current measured user, which helps to stop pressurization in time and effectively improves the blood pressure measurement experience of the measured user.

[0144] Further, by performing band-pass filtering on the piezoelectric signals at a specified frequency to obtain piezoelectric signals of a specified frequency band, and further performing denoising processing on the piezoelectric signals of the specified frequency band obtained after filtering based on the pressure signals, the interference of the air pump of the blood pressure measurement device on the piezoelectric signals can be reduced, so as to improve the accuracy of calculating the pressurization stop pressure based on the signal strength of the piezoelectric signals.

[0145] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. For the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts are described in the part of the method embodiments.

[0146] The pressure measurement control method and device of the blood pressure measurement device provided in the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description should not be understood as limiting the present application.

[0147] The device embodiments described above are only schematic, and the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, that is, they can be located in one place or distributed on multiple network units. According to actual needs, part or all of the modules can be selected to achieve the purpose of the present embodiment. Those skilled in the art can understand and implement it without creative labor.

[0148] The various component embodiments of the present application can be implemented in hardware, or as software modules running in one or more processors, or combinations thereof. Those skilled in the art will appreciate that some or all of the components in the electronic device according to the embodiments of the present application can be implemented using a microprocessor or a digital signal processor (DSP) to implement some or all of the functions of some or all of the components in the electronic device according to the embodiments of the present application in practice. The present application can also be implemented as a device or apparatus program (for example, a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present application can be stored in a computer readable medium, or can be in the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0149] For example, Figure 8 An electronic device in which the methods according to the present application can be implemented is shown. The electronic device can be a PC, a mobile terminal, a personal digital assistant, a tablet computer, etc. The electronic device traditionally comprises a processor 810 and a memory 820 and program code 830 stored on the memory 820 and executable on the processor 810, which when executed by the processor 810 implements the methods described in the above embodiments. The memory 820 can be a computer program product or a computer readable medium. The memory 820 can be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk, or a ROM. The memory 820 has a storage space 8201 for the program code 830 of the computer program for performing any of the method steps in the above methods. For example, the storage space 8201 for the program code 830 can comprise individual computer programs for implementing the various steps in the above methods, respectively. The program code 830 is computer readable code. The computer programs can be read out from or written into one or more computer program products. The computer program products comprise program code carriers such as hard disks, compact discs (CDs), memory cards, or floppy disks. The computer programs comprise computer readable code which, when executed on the electronic device, causes the electronic device to perform the methods according to the above embodiments.

[0150] The embodiments of the present application also disclose a computer readable storage medium, which has stored thereon a computer program, and the computer program, when executed by a processor, implements the steps of the pressure measurement control method of the blood pressure measurement device according to the embodiments of the present application.

[0151] Such a computer program product can be a computer readable storage medium, which can have the same structure as Figure 8The memory 820 in the electronic device shown is arranged similarly to a memory segment, a memory space, etc. The program code can be stored in the computer-readable storage medium, for example, in a compressed form. The computer-readable storage medium is typically a portable or stationary storage unit as described above. Typically, the storage unit comprises computer-readable code 830' which is code that is read by the processor, which, when executed by the processor, implements the individual steps of the method described above. Figure 9 The computer-readable storage medium described above is typically a portable or stationary storage unit. Typically, the storage unit comprises computer-readable code 830' which is code that is read by the processor, which, when executed by the processor, implements the individual steps of the method described above.

[0152] The term "one embodiment", "an embodiment", or "one or more embodiments" as used herein, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0153] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been described in detail in order not to obscure the understanding of this description.

[0154] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and any combination thereof. In a unitary claim, several devices or sub-claims can be listed, comprising at least one element each. These several devices or sub-claims can be combined, and if so, the combination forms itself one device or one additional claim. The word "first", "second", "third", etc. do not imply any order. The terms "first", "second", "third", etc. are to be interpreted according to their meaning in the context of the specific embodiment and are not to be interpreted as a numbering of elements.

[0155] Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the application, since the scope of the application is determined by the appended claims.

Claims

1. A pressure measurement control method of a blood pressure measurement apparatus, characterized by, The method comprises the following steps: In the process of measuring the blood pressure of a user by using a blood pressure measuring device, a pressure signal generated by the brachial artery pulsation of the current user being measured and a piezoelectric signal are collected in real time, wherein the pressure signal is the pressure signal in the air bag of the cuff of the blood pressure measuring device, and the piezoelectric signal is collected by a piezoelectric device arranged on the side of the cuff that is attached to the brachial artery of the current user being measured; The pressure signal is filtered to obtain an oscillation wave signal, and the piezoelectric signal is filtered to obtain a piezoelectric band communication signal; According to the oscillation wave signal, the target signal position of the piezoelectric band communication signal corresponding to each brachial artery pulsation is determined; The signal intensity of the piezoelectric band communication signal at the target signal position is obtained; According to the signal intensity, the pressure stopping pressure of the blood pressure measuring device is controlled; According to the oscillation wave signal, the target signal position of the piezoelectric band communication signal corresponding to each brachial artery pulsation is determined, which comprises: The peak position of the oscillation wave signal is used as the target signal position of the piezoelectric band communication signal corresponding to each brachial artery pulsation.

2. The method of claim 1, wherein, According to the signal intensity, the pressure stopping pressure of the blood pressure measuring device is controlled, which comprises: The signal intensity at the target signal position and the change trend of the signal intensity at multiple target signal positions are obtained; In response to the signal intensity at the target signal position being less than a preset signal intensity threshold and the change trend being a decreasing trend, the target signal position is determined as a pressure stopping time point; According to the signal value of the pressure signal at the pressure stopping time point, the pressure stopping pressure is determined.

3. The method according to claim 1 or 2, characterized in that, The signal intensity of the piezoelectric band communication signal at the target signal position is obtained, which comprises: The piezoelectric band communication signal within a preset time range before and after the target signal position is determined as a de-noised piezoelectric band communication signal; The root mean square of the de-noised piezoelectric band communication signal is obtained as the signal intensity of the piezoelectric band communication signal at the target signal position.

4. The method according to claim 1 or 2, characterized in that, The pressure signal is filtered to obtain an oscillation wave signal, which comprises: The pressure signal is subjected to band-pass filtering processing in a first preset frequency range to obtain an oscillation wave signal.

5. The method according to claim 1 or 2, characterized in that, The piezoelectric signal is filtered to obtain a piezoelectric band communication signal, which comprises: The piezoelectric signal is subjected to band-pass filtering processing in a second preset frequency range to obtain a first piezoelectric band communication signal; The piezoelectric signal is subjected to band-pass filtering processing in a third preset frequency range to obtain a second piezoelectric band communication signal; and The piezoelectric signal is subjected to band-pass filtering processing in a fourth preset frequency range to obtain a third piezoelectric band communication signal, wherein the second preset frequency range is greater than or equal to a first frequency and less than or equal to a second frequency, the third preset frequency range is greater than the first frequency and less than or equal to the second frequency, and the fourth preset frequency range is greater than or equal to the first frequency and less than the second frequency; The first frequency band piezoelectric signal is obtained by subtracting the second piezoelectric band communication signal from the first piezoelectric band communication signal; The second frequency band piezoelectric signal is obtained by subtracting the third piezoelectric band communication signal from the first piezoelectric band communication signal; The first frequency band piezoelectric signal and the second frequency band piezoelectric signal are superimposed to obtain a piezoelectric band communication signal.

6. A tonometric control device for a blood pressure measuring apparatus, characterized by Comprise: The pressure signal and the piezoelectric signal acquisition module is used for acquiring the pressure signal and the piezoelectric signal generated by the brachial artery pulsation of the current user to be measured in real time in the process of measuring the blood pressure of the user by using the blood pressure measuring device, wherein the pressure signal is the pressure signal in the air bag of the cuff of the blood pressure measuring device, and the piezoelectric signal is acquired by the piezoelectric device arranged on the side of the cuff adhering to the brachial artery of the current user to be measured; The filtering module is used for filtering the pressure signal to obtain a shock wave signal, and filtering the piezoelectric signal to obtain a piezoelectric band communication signal; The target signal position determination module is used for determining the target signal position of the piezoelectric band communication signal corresponding to each brachial artery pulsation according to the shock wave signal; specifically, the pressure signal acquisition time point corresponding to the peak position of the shock wave signal is taken as the target signal position of the piezoelectric band communication signal corresponding to each brachial artery pulsation; The signal intensity acquisition module is used for acquiring the signal intensity of the piezoelectric band communication signal at the target signal position; The pressurization stop pressure control module is used for controlling the pressurization stop pressure of the blood pressure measuring device according to the signal intensity.

7. The apparatus of claim 6, wherein, The pressurization stop pressure control module is further used for: Acquiring the signal intensity of the target signal position and the change trend of the signal intensity at multiple target signal positions; In response to the signal intensity at the target signal position being less than a preset signal intensity threshold and the change trend being a decreasing trend, determining that the target signal position is a pressurization stop time point; Determining the pressurization stop pressure according to the signal value of the pressure signal at the pressurization stop time point.

8. An electronic device comprising a memory, a processor, and program code stored on the memory and executable on the processor, wherein, The processor executes the program code to realize the pressurization control method of the blood pressure measuring device in any one of claims 1 to 5. 9.A computer readable storage medium having stored thereon a program code, characterized in that, The program code is executed by the processor to realize the steps of the pressurization control method of the blood pressure measuring device in any one of claims 1 to 5.

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