Wrist blood pressure measuring device and method and storage medium

Abstract

The invention discloses wrist blood pressure measuring equipment, a wrist blood pressure measuring method and a storage medium. The equipment comprises a pulse wave signal acquisition sensor, an air pressure sensor, a wrist strap and a processor, the pulse wave signal acquisition sensor is arranged on the wrist strap, and the pulse wave signal acquisition sensor is provided with a plurality of pulse wave signal acquisition channels; the air pressure sensor is arranged on the wrist strap; the processor is used for acquiring multiple pulse wave signals at different positions simultaneously acquired by the multiple pulse wave signal acquisition channels within a first time period; a first blood pressure measurement value is calculated based on the pulse wave signals, collected at the same time, of the multiple different positions; acquiring an air pressure signal acquired by an air pressure sensor in a first time period; calculating a second blood pressure measurement value based on the air pressure signal; and calculating the blood pressure measurement value of the measured object based on the first blood pressure measurement value and the second blood pressure measurement value. When the blood pressure is measured, the blood pressure measurement value of the measured object is calculated according to the first blood pressure measurement value and the second blood pressure measurement value, so that the blood pressure measurement precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood pressure measurement, and particularly to a wrist-type blood pressure measurement device, method and storage medium. Background Art

[0002] Electronic blood pressure measurement devices are mainly divided into two forms: arm-type and wrist-type. Among them, the arm-type blood pressure measurement device measures the upper arm blood pressure through the brachial artery, has high measurement accuracy, and is widely used in home and medical scenarios. However, its volume is large, which is not convenient for carrying around and outdoor measurement. The wrist-type blood pressure measurement device has attracted attention because of its small size and portability.

[0003] Current wrist-type blood pressure measurement devices are based on the traditional oscillometric method, or the electronic Korotkoff sound method, or the photoelectric pulse wave method. Among them, although the blood pressure measurement method based on the traditional oscillometric method has low cost and simple principle, its fixed threshold is difficult to adapt to individual physiological differences, resulting in large measurement errors. The electronic Korotkoff sound method cannot accurately measure patients with abnormal heart rate or severe cardiovascular diseases due to its measurement principle limitations. The photoelectric pulse wave method is easily affected by factors such as skin contact quality, movement, and environment, resulting in signal distortion or loss, affecting measurement accuracy. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is the problem of low measurement result accuracy of current wrist-type blood pressure measurement devices.

[0005] According to a first aspect, in some embodiments, a wrist-type blood pressure measurement device is provided, including: a pulse wave signal acquisition sensor, a pressure sensor, a wristband, and a processor; The pulse wave signal acquisition sensor is disposed on the wristband. The pulse wave signal acquisition sensor has a plurality of pulse wave signal acquisition channels, and each pulse wave signal acquisition channel correspondingly acquires a pulse wave signal at a position of the object to be measured. The pressure sensor is disposed on the wristband and is used to acquire the air pressure signal of the wristband; The processor is configured to: Acquire pulse wave signals at a plurality of different positions simultaneously acquired by the plurality of pulse wave signal acquisition channels within a first time period; Calculate a first blood pressure measurement value based on the pulse wave signals at the plurality of different positions acquired simultaneously; Acquire the air pressure signal acquired by the pressure sensor within the first time period; Calculate a second blood pressure measurement value based on the air pressure signal acquired by the pressure sensor; Calculate the blood pressure measurement value of the object to be measured based on the first blood pressure measurement value and the second blood pressure measurement value.

[0006] Optionally, multiple pulse wave signal acquisition channels are respectively used to acquire the pulse wave signals at the cun position, guan position, and chi position of the wrist of the object to be measured.

[0007] Optionally, calculating the first blood pressure measurement value based on the simultaneously acquired pulse wave signals at multiple different positions includes: Calculating the pulse wave propagation time between the pulse wave signals at multiple different positions simultaneously acquired within the first time period; Calculating the pulse wave velocity based on the pulse wave propagation time; Calculating the first blood pressure measurement value based on the pulse wave velocity.

[0008] Optionally, calculating the first blood pressure measurement value based on the simultaneously acquired pulse wave signals at multiple different positions includes: The pulse wave signals at multiple different positions simultaneously acquired within the first time period are divided into multiple signal groups, where each signal group has at least two pulse wave signals at different positions; Calculating the pulse wave propagation time between the pulse wave signals at different positions in each signal group; Calculating the pulse wave velocity between the pulse wave signals at different positions in each signal group based on the pulse wave propagation time calculated for each signal group; Calculating the final pulse wave velocity based on the pulse wave velocity corresponding to each signal group; Calculating the first blood pressure measurement value based on the final pulse wave velocity.

[0009] Optionally, each signal group has two pulse wave signals at different positions.

[0010] Optionally, the final pulse wave velocity is the average value of multiple pulse wave velocities.

[0011] Optionally, calculating the blood pressure measurement value of the object to be measured based on the first blood pressure measurement value and the second blood pressure measurement value includes: Calculating the average value of the first blood pressure measurement value and the second blood pressure measurement value in the same measurement, and using the average value as the blood pressure measurement value of the object to be measured.

[0012] According to a second aspect, in some embodiments, a blood pressure measurement method is provided for the wrist-type blood pressure measurement device as described above. The blood pressure measurement method includes: Obtaining the pulse wave signals at multiple different positions simultaneously acquired by multiple pulse wave signal acquisition channels within the first time period; Calculate a first blood pressure measurement value based on the pulse wave signals collected simultaneously at multiple different positions; Obtain the air pressure signal collected by the air pressure sensor within the first time period; Calculate a second blood pressure measurement value based on the air pressure signal collected by the air pressure sensor; Calculate the blood pressure measurement value of the subject based on the first blood pressure measurement value and the second blood pressure measurement value.

[0013] Optionally, the multiple pulse wave signals at least include the pulse wave signals at the cun position, guan position, and chi position of the subject.

[0014] According to a third aspect, in some embodiments, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program can be executed by a processor to implement the blood pressure measurement method as described above.

[0015] The present application discloses a wrist-type blood pressure measurement device, method, and storage medium. When measuring blood pressure, a first blood pressure measurement value is calculated based on multiple pulse wave signals at different positions within the obtained first time period. At the same time, a second blood pressure measurement value is calculated according to the obtained air pressure signal within the first time period. Finally, the blood pressure measurement value of the subject is calculated based on the first blood pressure measurement value and the second blood pressure measurement value, improving the accuracy of blood pressure measurement. Description of the Drawings

[0016] Figure 1 Is a block diagram of the principle of a wrist-type blood pressure measurement device; Figure 2 Is a structural diagram of a pulse wave signal acquisition sensor in an embodiment; Figure 3 Is a flowchart of the blood pressure measurement method; Figure 4 Is a flowchart of calculating the first blood pressure measurement value in an embodiment; Figure 5 Is a flowchart of calculating the first blood pressure measurement value in another embodiment; Figure 6 Is a pulse wave signal diagram at the cun position in an embodiment; Figure 7 Is a pulse wave signal diagram at the guan position in an embodiment; Figure 8 Is a pulse wave signal diagram at the chi position in an embodiment. Detailed Description of the Embodiments

[0017] The present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings. Similar elements in different embodiments are denoted by related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0018] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated otherwise that a certain sequence must be followed.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connected" and "coupled" used in the present application, unless otherwise specified, both include direct and indirect connections (couplings).

[0020] Electronic blood pressure measurement devices are mainly divided into two forms: arm-type and wrist-type; among them, the arm-type blood pressure measurement device measures the blood pressure of the upper arm through the brachial artery, has high measurement accuracy, and is widely used in home and medical scenarios. However, it is large in size and not convenient to carry around and measure outdoors. The wrist-type blood pressure measurement device has attracted attention because of its small size and portability.

[0021] Current wrist-type blood pressure measurement devices are based on the traditional oscillometric method, the electronic Korotkoff sound method, or the photoelectric pulse wave method. Among them, the principle of the blood pressure measurement method of the traditional oscillometric method is to utilize the oscillometric principle of the waveform of the pulse wave, and estimate the blood pressure according to the relationship between the pulse amplitude and the cuff pressure. The mean pressure corresponds to the maximum value of the pulse wave, and the systolic blood pressure and diastolic blood pressure are determined respectively according to the ratio of the corresponding maximum pulse wave amplitude. Although the traditional blood pressure measurement method based on the oscillometric method has low cost and simple principle, due to its fixed threshold being difficult to adapt to individual physiological differences, the measurement error is relatively large. The electronic Korotkoff sound method mainly blocks the blood flow after the cuff is inflated, and then slowly deflates it, and uses a sensor to capture the Korotkoff sound. The corresponding pressure when the sound first appears is the systolic blood pressure, and the diastolic blood pressure is when the sound disappears after continuing to deflate. The blood pressure measurement method based on the electronic Korotkoff sound method can measure the blood pressure of an individual after adding a sensor, but due to the limitation of its measurement principle, it is still unable to accurately measure patients with abnormal heart rates or severe cardiovascular diseases. The blood pressure estimation method based on the photoelectric pulse wave has received extensive attention in recent years. This blood pressure estimation method is easily affected by factors such as skin contact quality, movement, and ambient light, resulting in signal distortion or loss, which affects the accuracy of the measurement.

[0022] In some existing technologies, for example, in the Chinese invention patent application with the publication number 《CN119112131A》 and the invention name "An Intelligent Blood Pressure Measurement Method and System Based on the Pulse Wave Method", it includes obtaining the pulse wave signal in real time through a photoelectric sensor, and performing filtering and denoising, feature extraction, and then sending it into a neural network model for analysis to obtain the result. This method uses a photoelectric sensor to obtain the pulse signal, which is easily affected by ambient light and different skin colors, and cannot obtain high-quality pulse signals.

[0023] Another example is the Chinese invention patent application with the publication number 《CN116509354 A》 and the invention name "A Blood Pressure Calculation Method and Blood Pressure Measurement Device Based on the Blood Pressure Pulse Wave". Based on the original pressure pulse wave data of the blood pressure, an amplitude curve is fitted, and then the amplitude curve is resampled and normalized to extract all the key feature information required for calculating the blood pressure value. This method only uses a barometric pressure sensor to obtain the pressure pulse wave signal, and its sampling accuracy is insufficient, and it is unable to accurately collect and measure patients with weak or abnormal pulse signals.

[0024] To address the above technical problems, the present invention provides a wrist-type blood pressure measurement device. When measuring blood pressure, the blood pressure measurement value of the measured object is calculated based on the first blood pressure measurement value and the second blood pressure measurement value, improving the accuracy of blood pressure measurement.

[0025] Please refer to Figure 1 , which is the principle block diagram of the wrist-type blood pressure measurement device. The wrist-type blood pressure measurement device may include a pulse wave signal acquisition sensor, a barometric pressure sensor 101, a wristband, and a processor 100.

[0026] The pulse wave signal acquisition sensor 102 is disposed on the wristband. The pulse wave signal acquisition sensor 102 has a plurality of pulse wave signal acquisition channels, and each pulse wave signal acquisition channel correspondingly acquires a pulse wave signal at a position of the object to be measured. The air pressure sensor 101 is disposed on the wristband and is used to acquire the air pressure signal of the wristband.

[0027] Please refer to Figure 3 , the processor 100 is used to execute the following steps: S100. Obtain the pulse wave signals at multiple different positions simultaneously acquired by a plurality of pulse wave signal acquisition channels 1021 within a first time period; S200. Calculate a first blood pressure measurement value based on the pulse wave signals at multiple different positions simultaneously acquired; S300. Obtain the air pressure signal acquired by the air pressure sensor 101 within the first time period; S400. Calculate a second blood pressure measurement value based on the air pressure signal acquired by the air pressure sensor 101; S500. Calculate the blood pressure measurement value of the object to be measured based on the first blood pressure measurement value and the second blood pressure measurement value.

[0028] Specifically, the pulse wave signal acquisition sensor 102 is connected to the processor 100. When the pulse wave signal acquisition sensor 102 is disposed on the wristband, a pulse wave signal acquisition sensor 102 having a plurality of acquisition probes can be selected, and each acquisition probe is a pulse wave signal acquisition channel 1021. When measuring blood pressure, the wristband is sleeved on the wrist position of the object to be measured, and each acquisition probe is respectively in contact with different positions of the object to be measured, so that the pulse wave signal acquisition sensor 102 can acquire the pulse wave signals at multiple different positions of the object to be measured. Among them, please refer to Figure 2 , in the pulse wave signal acquisition sensor 102, two acquisition probes can be provided, or three acquisition probes, four acquisition probes, six acquisition probes, etc. can be provided. The multiple acquisition probes are arranged and distributed on the same straight line, that is, in a linear distribution, and the distance between two adjacent acquisition probes can be set according to the group to which the object to be measured belongs. For example, when the group to which the object to be measured belongs is an adult, the distance between adjacent acquisition probes can be determined according to the structure of the wrist joint of the adult, so that the pulse wave signals at the required positions can be acquired through the pulse wave signal acquisition sensor 102.

[0029] Furthermore, the material of the acquisition probe can be, but is not limited to, polyvinylidene fluoride, and the position in contact with the object to be measured is convex, so as to better contact with the object to be measured and improve the accuracy of blood pressure measurement.

[0030] The barometric pressure sensor 101 is connected to the processor 100. The barometric pressure sensor 101 can be connected to the airbag in the wristband through a pipeline, and the barometric pressure signal of the wristband can be collected when the airbag is inflated or deflated.

[0031] When measuring the blood pressure of the object to be measured, the wristband is put on the wrist position of the object to be measured. The pulse wave acquisition sensor arranged on the wristband acquires pulse wave signals at multiple different positions and transmits them to the processor 100. The processor 100 calculates the first blood pressure measurement value according to the acquired pulse wave signals at multiple different positions. Further, the barometric pressure sensor 101 acquires the barometric pressure signal of the wristband in the first time period and transmits it to the processor 100. The processor 100 calculates the second blood pressure measurement value according to the acquired barometric pressure signal. And finally, the blood pressure measurement value of the object to be measured is calculated according to the first blood pressure measurement value and the second blood pressure measurement value.

[0032] When the wrist-type blood pressure measurement device measures blood pressure, it does not merely calculate the blood pressure measurement value based on the pulse wave signal, nor does it merely calculate the blood pressure measurement value based on the barometric pressure signal. Instead, it calculates the first blood pressure measurement value according to multiple pulse wave signals, then calculates the second blood pressure measurement value according to the barometric pressure signal, and further calculates the blood pressure measurement value of the object to be measured according to the first blood pressure measurement value and the second blood pressure measurement value (which is equivalent to performing superposition analysis on multiple pulse wave signals and barometric pressure signals to determine the blood pressure measurement value of the object to be measured), improving the accuracy of blood pressure measurement.

[0033] In some embodiments, multiple pulse wave signal acquisition channels are respectively used to acquire the pulse wave signals at the Cun position, Guan position, and Chi position of the wrist of the object to be measured.

[0034] Specifically, three acquisition probes are arranged on the pulse wave signal acquisition sensor 102. The three acquisition probes respectively acquire the pulse wave signals at the Cun position, Guan position, and Chi position of the wrist of the object to be measured, and are linearly distributed. As Figure 2 shown, wherein, the length of the pulse wave signal acquisition sensor 102 can be, but is not limited to, 85.90 mm, the width can be, but is not limited to, 20.41 mm, and when connected to the processor 100, it can be connected through a flexible printed circuit board (FPC, Flexible Printed Circuit).

[0035] In a specific embodiment, the group to which the object to be measured belongs is adults. When distributing the three acquisition probes, the distances between the cun position, guan position, and chi position in the radial artery region at the same wrist position of adults are referred to, so that the pulse wave signal acquisition sensor 102 can acquire the pulse wave signals at the cun position, guan position, and chi position of the object to be measured. This also further illustrates that when the wrist-type blood pressure measurement device measures blood pressure, the obtained pulse wave signal refers to the waveform signal of the pulse condition of the object to be measured. For example, the pulse wave signal at the cun position refers to the waveform signal of the pulse condition at the cun position; the pulse wave signal at the guan position refers to the waveform signal of the pulse condition at the guan position; the pulse wave signal at the chi position refers to the waveform signal of the pulse condition at the chi position.

[0036] Similarly, when the group to which the object to be measured belongs is teenagers, when distributing the three acquisition probes, the distances between the cun position, guan position, and chi position in the radial artery region at the same wrist position of teenagers are referred to, so that the pulse wave signal acquisition sensor 102 can acquire the pulse wave signal at the cun position, the pulse wave signal at the guan position, and the pulse wave signal at the chi position of the object to be measured.

[0037] In this embodiment, among the pulse wave signals at multiple different positions, at least the pulse wave signals at the cun position, guan position, and chi position are included, which can not only improve the blood pressure measurement accuracy, but also effectively evaluate the vascular health of the object to be measured according to the pulse wave signals at the cun position, guan position, and chi position.

[0038] In some embodiments, please refer to Figure 4 , calculating a first blood pressure measurement value based on the pulse wave signals at multiple different positions collected simultaneously, including the following steps: S201. Calculate the pulse wave propagation time between the pulse wave signals at multiple different positions according to the pulse wave signals at multiple different positions collected simultaneously within the first time period; S202. Calculate the pulse wave velocity according to the pulse wave propagation time; S203. Calculate the first blood pressure measurement value according to the pulse wave velocity.

[0039] Specifically, when calculating the pulse wave time, a pulse wave propagation time (PWTT, Pulse Wave Transit Time) can be calculated according to the pulse wave signals at multiple different positions. After the pulse wave propagation time is determined, the pulse wave velocity corresponding to the pulse wave signals at multiple different positions collected simultaneously within the first time period is calculated according to the pulse wave propagation time, and then the first blood pressure measurement value is calculated according to the pulse wave velocity.

[0040] To more clearly understand the pulse wave propagation time between the pulse wave signals at multiple different positions calculated based on the pulse wave signals collected simultaneously within the first time period, the following takes the example where the pulse wave signal acquisition sensor 102 has three acquisition probes, and the three acquisition probes respectively collect the pulse wave signals at the cun position, guan position, and chi position for illustration.

[0041] Specifically, based on the pulse wave signals at the cun position, guan position, and chi position collected simultaneously within the first time period, the corresponding pulse wave propagation time is calculated, and the corresponding pulse wave velocity is calculated. After the pulse wave velocity is determined, the first blood pressure measurement value is calculated based on the pulse wave velocity.

[0042] In some embodiments, please refer to Figure 5 , calculating the first blood pressure measurement value based on the pulse wave signals at multiple different positions collected simultaneously includes the following steps: S210. The pulse wave signals at multiple different positions collected simultaneously within the first time period are divided into multiple signal groups, where each signal group has at least two pulse wave signals at different positions; S211. Calculate the pulse wave propagation time between the pulse wave signals at different positions in each signal group; S212. Calculate the pulse wave velocity between the pulse wave signals at different positions in each signal group based on the pulse wave propagation time calculated for each signal group; S213. Calculate the final pulse wave velocity based on the pulse wave velocity corresponding to each signal group; S214. Calculate the first blood pressure measurement value based on the final pulse wave velocity.

[0043] Specifically, when dividing the pulse wave signals at multiple different positions into groups, each signal group includes at least two pulse wave signals at different positions, and the pulse wave signals at the same position can be divided multiple times.

[0044] For example, the multiple pulse wave signals are the pulse wave signals at position A, position B, and position C. In one grouping, the pulse wave signal at position A and the pulse wave signal at position B can be grouped into one group, the pulse wave signal at position A and the pulse wave signal at position C can be grouped into one group, and the pulse wave signal at position B and the pulse wave signal at position C can be grouped into one group. It is also possible to group the pulse wave signal at position A and the pulse wave signal at position B into one group, group the pulse wave signals at position A, position B, and position C into one group, and group the pulse wave signal at position B and the pulse wave signal at position C into one group.

[0045] For another example, multiple pulse wave signals are the pulse wave signals at positions A, B, C, and D. In one grouping, the pulse wave signal at position A and the pulse wave signal at position B can be grouped into one group, the pulse wave signal at position A and the pulse wave signal at position C can be grouped into one group, the pulse wave signal at position A and the pulse wave signal at position D can be grouped into one group, the pulse wave signal at position B and the pulse wave signal at position C can be grouped into one group, the pulse wave signal at position B and the pulse wave signal at position D can be grouped into one group, and the pulse wave signal at position C and the pulse wave signal at position D can be grouped into one group. It is also possible to group the pulse wave signals at positions A, B, and C into one group, the pulse wave signals at positions A, B, and D into one group, the pulse wave signals at positions B, C, and D into one group, and the pulse wave signals at positions A, B, C, and D into one group.

[0046] When calculating the first blood pressure measurement value, first calculate the pulse wave propagation time between the pulse wave signals at different positions in each signal group, then calculate the pulse wave velocity corresponding to the pulse wave signals at different positions in each signal group based on the pulse wave propagation time, further calculate the final pulse wave velocity based on all the pulse wave velocities, and finally calculate the first blood pressure measurement value based on the final pulse wave velocity.

[0047] In this embodiment, when calculating the first blood pressure measurement value, multiple pulse wave signals at different positions are first grouped, multiple pulse wave velocities are calculated, then the final pulse wave velocity is calculated based on the multiple pulse wave velocities, and the first blood pressure measurement value is calculated based on the final pulse wave velocity, further improving the measurement accuracy of the first blood pressure measurement value.

[0048] Furthermore, the final pulse wave velocity can be the average value of multiple pulse wave velocities.

[0049] In a specific embodiment, each signal group has two pulse wave velocities at different positions.

[0050] Specifically, for example, multiple pulse wave signals are the pulse wave signals at positions A, B, and C. The three pulse wave signals (the pulse wave signals at positions A, B, and C) can be divided into three signal groups. The pulse wave signal at position A and the pulse wave signal at position B form one signal group, the pulse wave signal at position B and the pulse wave signal at position C form one signal group, and the pulse wave signal at position A and the pulse wave signal at position C form one signal group.

[0051] For another example, the multiple pulse wave signals are the pulse wave signal at position A, the pulse wave signal at position B, the pulse wave signal at position C and the pulse wave signal at position D. The four pulse wave signals (the pulse wave signal at position A, the pulse wave signal at position B, the pulse wave signal at position C and the pulse wave signal at position D) can be divided into six signal groups, with the pulse wave signal at position A and the pulse wave signal at position B being one signal group, the pulse wave signal at position A and the pulse wave signal at position C being one signal group, the pulse wave signal at position B and the pulse wave signal at position C being one signal group, the pulse wave signal at position B and the pulse wave signal at position D being one signal group, the pulse wave signal at position C being one signal group and the pulse wave signal at position D being one signal group.

[0052] In this embodiment, the method of dividing the signal groups by pulse wave signals having two different positions in each signal group can divide more signal groups, which can further improve the measurement accuracy of the first blood pressure measurement value.

[0053] Of course, one signal group may also include pulse wave signals from three different positions, pulse wave signals from four different positions, etc., and those skilled in the art may also make the division according to actual needs.

[0054] After the first blood pressure measurement value and the second blood pressure measurement value are determined, an average value of the first blood pressure measurement value and the second blood pressure measurement value in the same measurement may be calculated and used as the blood pressure measurement value of the measured object.

[0055] It is further explained that the blood pressure measurement value of the measured object is obtained by comprehensive calculation of the first blood pressure measurement value calculated according to the pulse wave signal and the second blood pressure measurement value calculated according to the air pressure signal, thereby improving the accuracy of blood pressure measurement.

[0056] In order to further understand the wrist blood pressure measuring device, a specific usage process is described below. In the following description, the pulse wave signal acquisition sensor 102 of the wrist blood pressure measuring device has three acquisition probes, and the three acquisition probes are distributed in a straight line and correspond to the inch position, the joint position and the foot position of the measured object respectively.

[0057] When the wrist-type blood pressure measuring device is used, the wristband is put on the wrist of the measured object, so that the three acquisition probes of the pulse wave signal acquisition sensor 102 correspond to the inch position, the joint position and the foot position of the measured object respectively. After the wristband is put on, press the button to control the air pump, and the air pump starts to pressurize. The air pressure sensor 101 in the wristband and the pulse wave signal acquisition sensor 102 synchronously collect signals, and release the pressure after the pressure reaches 200mmhg. Please refer to Figure 6 , Figure 7 and Figure 8, Figure 6 is the pulse wave signal at the Cun position, Figure 7 is the pulse wave signal at the Guan position, Figure 8 is the pulse wave signal at the Chi position. Since the pulse wave signal acquisition sensor 102 corresponds to different positions of the measured object respectively, therefore, under the same pressure, the three pulse wave signals are different, making up for the problem that the acquisition quality of the pulse wave signal collected through one position may be poor.

[0058] In some embodiments, please refer to Figure 3 , the present invention discloses a blood pressure measurement method for the wrist-type blood pressure measurement device as described above. The blood pressure measurement method includes the steps: S100. Obtain pulse wave signals at multiple different positions simultaneously collected by a plurality of pulse wave signal acquisition channels 1021 within a first time period; S200. Calculate a first blood pressure measurement value based on the pulse wave signals at multiple different positions simultaneously collected; S300. Obtain the air pressure signal collected by the air pressure sensor 101 within the first time period; S400. Calculate a second blood pressure measurement value based on the air pressure signal collected by the air pressure sensor 101; S500. Calculate the blood pressure measurement value of the measured object based on the first blood pressure measurement value and the second blood pressure measurement value. Specifically, as described in the specific embodiment of a wrist-type blood pressure measurement device, no further elaboration is provided here.

[0059] In some embodiments, the multiple pulse wave signals at least include the pulse wave signal at the Cun position, the pulse wave signal at the Guan position, and the pulse wave signal at the Chi position of the measured object. Specifically, as described in the specific embodiment of a wrist-type blood pressure measurement device, no further elaboration is provided here.

[0060] In some embodiments, the present invention also discloses a computer-readable storage medium, on which a computer program is stored. The computer program can be executed by the processor 100 to implement the blood pressure measurement method as described above. Specifically, as described in the specific embodiment of a wrist-type blood pressure measurement device, no further elaboration is provided here.

[0061] In summary, the present invention discloses a wrist-type blood pressure measurement device, method, and storage medium, having the following beneficial effects: When measuring blood pressure, it is not just calculating the blood pressure measurement value based on the pulse wave signal, nor just calculating the blood pressure measurement value based on the air pressure signal. Instead, the first blood pressure measurement value is calculated based on multiple pulse wave signals, and then the second blood pressure measurement value is calculated based on the air pressure signal. Further, the blood pressure measurement value of the object to be measured is calculated based on the first blood pressure measurement value and the second blood pressure measurement value (equivalent to superimposing and analyzing multiple pulse wave signals and air pressure signals to determine the blood pressure measurement value of the object to be measured), which improves the accuracy of blood pressure measurement.

[0062] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A wrist-type blood pressure measuring device, characterized in that, Including: A pulse wave signal acquisition sensor, a pressure sensor, a wristband, and a processor; The pulse wave signal acquisition sensor is disposed on the wristband. The pulse wave signal acquisition sensor has a plurality of pulse wave signal acquisition channels, and each of the pulse wave signal acquisition channels correspondingly acquires a pulse wave signal at a position of the object to be measured. The pressure sensor is disposed on the wristband and is used to acquire the air pressure signal of the wristband; The processor is used for: Obtaining pulse wave signals at a plurality of different positions simultaneously acquired by the plurality of pulse wave signal acquisition channels within a first time period; Calculating a first blood pressure measurement value based on the pulse wave signals at the plurality of different positions simultaneously acquired; Obtaining the air pressure signal acquired by the pressure sensor within the first time period; Calculating a second blood pressure measurement value based on the air pressure signal acquired by the pressure sensor; Calculating the blood pressure measurement value of the object to be measured based on the first blood pressure measurement value and the second blood pressure measurement value.

2. The wrist-type blood pressure measuring device according to claim 1, wherein, The plurality of pulse wave signal acquisition channels are respectively used to acquire the pulse wave signals at the cun position, guan position, and chi position of the wrist of the object to be measured.

3. The wrist-type blood pressure measuring device according to claim 2, characterized in that, The calculating the first blood pressure measurement value based on the pulse wave signals at the plurality of different positions simultaneously acquired includes: Calculating the pulse wave propagation time between the pulse wave signals at the plurality of different positions according to the pulse wave signals at the plurality of different positions simultaneously acquired within the first time period; Calculating the pulse wave velocity according to the pulse wave propagation time; Calculating the first blood pressure measurement value according to the pulse wave velocity.

4. The wrist-type blood pressure measuring device according to claim 2, characterized in that, The calculating the first blood pressure measurement value based on the pulse wave signals at the plurality of different positions simultaneously acquired includes: The pulse wave signals at the plurality of different positions simultaneously acquired within the first time period are divided into a plurality of signal groups, wherein each signal group has at least two pulse wave signals at different positions; Calculating the pulse wave propagation time between the pulse wave signals at different positions in each signal group; Calculating the pulse wave velocity between the pulse wave signals at different positions in each signal group according to the pulse wave propagation time calculated for each signal group; Calculating the final pulse wave velocity according to the pulse wave velocity corresponding to each signal group; Calculating the first blood pressure measurement value according to the final pulse wave velocity.

5. The wrist-type blood pressure measurement device according to claim 4, characterized in that, Each signal group has two pulse wave signals at different positions.

6. The wrist-type blood pressure measuring device according to claim 5, characterized in that, The final pulse wave velocity is the average value of the plurality of pulse wave velocities.

7. The wrist-type blood pressure measuring device according to any one of claims 1-6, characterized in that, The calculating the blood pressure measurement value of the object to be measured based on the first blood pressure measurement value and the second blood pressure measurement value includes: Calculating the average value of the first blood pressure measurement value and the second blood pressure measurement value in the same measurement, and taking the average value as the blood pressure measurement value of the object to be measured.

8. A blood pressure measurement method for a wrist-type blood pressure measurement device as described in any one of claims 1-7, characterized in that, The blood pressure measurement method includes: Obtaining pulse wave signals at a plurality of different positions simultaneously acquired by the plurality of pulse wave signal acquisition channels within a first time period; Calculating a first blood pressure measurement value based on the pulse wave signals at the plurality of different positions simultaneously acquired; Obtaining the air pressure signal acquired by the pressure sensor within the first time period; Calculate a second blood pressure measurement value based on the air pressure signal collected by the air pressure sensor; Calculate the blood pressure measurement value of the object to be measured based on the first blood pressure measurement value and the second blood pressure measurement value.

9. The blood pressure measurement method according to claim 8, wherein The multiple pulse wave signals at least include the pulse wave signals at the cun position, guan position, and chi position of the object to be measured.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the medium, and the computer program can be executed by a processor to implement the blood pressure measurement method according to any one of claims 8-9.

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