CN116115205A - Blood pressure measuring method, device, electronic equipment and storage medium - Google Patents
Blood pressure measuring method, device, electronic equipment and storage mediumDownload PDFInfo
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Abstract
Description
Translated fromChinese技术领域technical field
本申请涉及无创连续血压监测技术领域，尤其涉及一种血压测量方法、装置、电子设备及存储介质。The present application relates to the technical field of non-invasive continuous blood pressure monitoring, in particular to a blood pressure measurement method, device, electronic equipment and storage medium.
背景技术Background technique
血压是反映人体心血管功能的一项重要生理指标，血压水平与心脑血管病发病和死亡风险之间存在密切的因果关系。近年来，高血压发病率不断上升，并经常引发心脏病、中风等并发症，严重威胁人体健康。相比于单次血压测量，连续血压监测能够降低偶然因素对测量结果的影响，让人们了解血压变化规律，为医护人员提供患者长期血压信息，有助于提高心血管系统状态评估的准确性。Blood pressure is an important physiological indicator that reflects the cardiovascular function of the human body. There is a close causal relationship between blood pressure level and the risk of cardiovascular and cerebrovascular diseases and death. In recent years, the incidence of high blood pressure has been increasing, and often causes complications such as heart disease and stroke, which seriously threaten human health. Compared with a single blood pressure measurement, continuous blood pressure monitoring can reduce the influence of accidental factors on the measurement results, let people understand the blood pressure change pattern, provide long-term blood pressure information for medical staff, and help improve the accuracy of cardiovascular system status assessment.
发明内容Contents of the invention
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。This application aims to solve one of the technical problems in the related art at least to a certain extent.
为此，本申请第一方面提出了一种血压测量方法，包括：To this end, the first aspect of the application proposes a blood pressure measurement method, including:
获取目标对象的个性化最优接触压力区间；Obtain the personalized optimal contact pressure range of the target object;
控制光电容积描记法PPG传感器与所述目标对象皮肤之间的接触压力处于所述个性化最优接触压力区间内；Controlling the contact pressure between the photoplethysmography PPG sensor and the skin of the target object to be within the personalized optimal contact pressure interval;
获取所述PPG传感器采集的PPG信号，并根据所述PPG信号获取所述目标对象的血压值。acquiring the PPG signal collected by the PPG sensor, and acquiring the blood pressure value of the target subject according to the PPG signal.
本申请第二方面提出了一种血压测量装置，包括：The second aspect of the present application proposes a blood pressure measuring device, including:
负反馈控制单元，用于确定所述目标对象的个性化最优接触压力区间，并控制光电容积描记法PPG传感器与目标对象皮肤之间的接触压力处于所述个性化最优接触压力区间内；A negative feedback control unit, configured to determine the personalized optimal contact pressure interval of the target object, and control the contact pressure between the photoplethysmography PPG sensor and the skin of the target object to be within the personalized optimal contact pressure interval;
血压计算单元，用于获取所述PPG传感器采集的PPG信号，并根据所述PPG信号获取所述目标对象的血压值。A blood pressure calculation unit, configured to acquire the PPG signal collected by the PPG sensor, and acquire the blood pressure value of the target subject according to the PPG signal.
本申请第三方面提出了一种电子设备，包括：The third aspect of the present application proposes an electronic device, including:
光电容积描记法PPG传感器；Photoplethysmography PPG sensor;
压力传感器；Pressure Sensor;
存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时，实现前述第一方面所述的方法。A memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the method described in the aforementioned first aspect is realized.
本申请第四方面提出了一种计算机可读存储介质，当所述存储介质中的指令由电子设备的处理器执行时，使得所述电子设备能够执行前述第一方面所述的方法。The fourth aspect of the present application provides a computer-readable storage medium. When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the method described in the aforementioned first aspect.
根据本申请实施例的血压测量方法，根据预先确定的目标对象的个性化最优接触压力区间，在目标对象连续测量血压过程中，对PPG传感器与目标对象皮肤之间的接触压力进行控制，使得接触压力处于个性化最优接触压力区间内，可提高所采集的PPG信号质量，从而提高血压测量精度。According to the blood pressure measurement method of the embodiment of the present application, according to the predetermined optimal contact pressure interval of the target object, during the continuous blood pressure measurement of the target object, the contact pressure between the PPG sensor and the skin of the target object is controlled so that The contact pressure is within the personalized optimal contact pressure range, which can improve the quality of the collected PPG signal, thereby improving the accuracy of blood pressure measurement.
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
附图说明Description of drawings
本申请上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:
图1为本申请实施例所提供的一种血压测量方法的流程示意图；FIG. 1 is a schematic flow chart of a method for measuring blood pressure provided in an embodiment of the present application;
图2为本申请实施提供的一种确定个性化最优接触压力区间的方法的流程图；Fig. 2 is a flow chart of a method for determining the personalized optimal contact pressure interval provided by the implementation of the present application;
图3为本申请实施例所提供的一种血压测量装置的示意图；FIG. 3 is a schematic diagram of a blood pressure measuring device provided in an embodiment of the present application;
图4为本申请实施例所提供的另一种血压测量装置的示意图；Fig. 4 is a schematic diagram of another blood pressure measurement device provided by the embodiment of the present application;
图5为本申请实施例所提供的一种电子设备的结构框图。FIG. 5 is a structural block diagram of an electronic device provided by an embodiment of the present application.
具体实施方式Detailed ways
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.
目前，使用光学原理测量光电容积脉搏波(photoplethysmography,PPG)信号来估算血压成为了无袖带连续血压测量技术的主流，这种方案摈弃了袖带的干扰，无创的方式同时也避免了感染的发生。然而，在连续采集PPG信号时，很难保证PPG传感器与待测量者皮肤之间的接触压力始终保持不变。而PPG传感器与待测量者皮肤之间的接触压力对PPG信号波形存在较大影响，不仅影响波形幅值，还会影响特征点的时域位置，进而影响测量血压精度。At present, using optical principles to measure photoplethysmography (PPG) signals to estimate blood pressure has become the mainstream of cuffless continuous blood pressure measurement technology. occur. However, when continuously collecting PPG signals, it is difficult to ensure that the contact pressure between the PPG sensor and the skin of the person to be measured remains constant all the time. However, the contact pressure between the PPG sensor and the skin of the person to be measured has a great influence on the PPG signal waveform, which not only affects the waveform amplitude, but also affects the time domain position of the feature points, thereby affecting the accuracy of blood pressure measurement.
为此，本申请提出一种血压测量方法、装置、电子设备及存储介质，在连续血压测量中，对PPG传感器与待测量者皮肤之间的接触压力进行调整，提高PPG信号质量，从而提高血压测量精度。具体地，下面参考附图描述本申请实施例的血压测量方法、装置、电子设备及存储介质。For this reason, the application proposes a blood pressure measurement method, device, electronic equipment and storage medium. In continuous blood pressure measurement, the contact pressure between the PPG sensor and the skin of the person to be measured is adjusted to improve the quality of the PPG signal, thereby increasing the blood pressure. measurement accuracy. Specifically, the blood pressure measurement method, device, electronic device, and storage medium in the embodiments of the present application are described below with reference to the accompanying drawings.
图1为本申请实施例所提供的一种血压测量方法的流程示意图。如图1所示，该血压测量方法包括以下步骤：Fig. 1 is a schematic flowchart of a method for measuring blood pressure provided in an embodiment of the present application. As shown in Figure 1, the blood pressure measurement method includes the following steps:
步骤101，获取目标对象的个性化最优接触压力区间。
需要说明的是，接触压力为PPG传感器与目标对象皮肤之间的接触压力。其中，PPG传感器可配置于腕带、手表等可穿戴设备上。不同的目标对象具有不同的个性化最优接触压力区间，该个性化最优接触压力区间为预先确定的。在个性化最优接触压力区间内，PPG传感器采集的PPG信号质量最优，例如PPG信号幅值最大、信噪比最强等。关于本申请实施例中的目标对象的个性化最优接触压力区间的确定方法可参考本申请后续实施例中的描述，在此不再赘述。It should be noted that the contact pressure is the contact pressure between the PPG sensor and the skin of the target object. Among them, the PPG sensor can be configured on wearable devices such as wristbands and watches. Different target objects have different individualized optimal contact pressure intervals, and the individualized optimal contact pressure intervals are predetermined. In the personalized optimal contact pressure range, the quality of the PPG signal collected by the PPG sensor is optimal, such as the largest PPG signal amplitude and the strongest signal-to-noise ratio. Regarding the method for determining the personalized optimal contact pressure interval of the target object in the embodiment of the present application, reference may be made to the description in the subsequent embodiments of the present application, and details are not repeated here.
步骤102，控制光电容积描记法PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内。
可选地，在本申请一些实施例中，可根据压力传感器获取得PPG传感器与目标对象皮肤之间的接触压力与个性化最优接触压力区间，基于负反馈调节机制自适应地调节接触压力，以控制接触压力处于个性化最优接触压力区间内。Optionally, in some embodiments of the present application, the contact pressure between the PPG sensor and the skin of the target object obtained by the pressure sensor and the personalized optimal contact pressure range can be adaptively adjusted based on the negative feedback adjustment mechanism, To control the contact pressure within the personalized optimal contact pressure range.
作为一种示例，可获取压力传感器采集的PPG传感器与目标对象皮肤之间的接触压力，将该接触压力与个性化最优接触压力区间进行大小比较。如果接触压力大于个性化最优接触压力区间内的最大值，则通过致动器控制减小PPG传感器与目标对象皮肤之间的接触压力，直至PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内；如果接触压力小于个性化最优接触压力区间内的最小值，则通过致动器控制增大PPG传感器与目标对象皮肤之间的接触压力，直至PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内；如果压力传感器采集的接触压力处于个性化最优接触压力区间内，则无需对PPG传感器与目标对象皮肤之间的接触压力进行调整。其中，压力传感器、致动器与PPG传感器配置于同一可穿戴设备内。As an example, the contact pressure collected by the pressure sensor between the PPG sensor and the skin of the target object may be obtained, and the contact pressure may be compared with the personalized optimal contact pressure range. If the contact pressure is greater than the maximum value in the personalized optimal contact pressure interval, the contact pressure between the PPG sensor and the target object's skin is reduced by actuator control until the contact pressure between the PPG sensor and the target object's skin is at the individual value. within the optimized contact pressure interval; if the contact pressure is less than the minimum value within the personalized optimal contact pressure interval, the contact pressure between the PPG sensor and the skin of the target object is increased through actuator control until the PPG sensor and the target object The contact pressure between the skins is within the personalized optimal contact pressure interval; if the contact pressure collected by the pressure sensor is within the personalized optimal contact pressure interval, there is no need to adjust the contact pressure between the PPG sensor and the skin of the target subject. Wherein, the pressure sensor, the actuator and the PPG sensor are configured in the same wearable device.
作为另一种示例，还可根据压力传感器采集的PPG传感器与目标对象皮肤之间的接触压力，将该接触压力与个性化最优接触压力区间进行大小比较。如果接触压力大于个性化最优接触压力区间内的最大值，则生成第一提示信息，该第一提示信息用于提醒目标对象减小PPG传感器与目标对象皮肤之间的接触压力，直至PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内；如果接触压力小于个性化最优接触压力区间内的最小值，则生成第二提示信息，该第二提示信息用于提醒目标对象增大PPG传感器与目标对象皮肤之间的接触压力，直至PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内。As another example, according to the contact pressure collected by the pressure sensor between the PPG sensor and the skin of the target object, the contact pressure can be compared with the personalized optimal contact pressure range. If the contact pressure is greater than the maximum value in the personalized optimal contact pressure interval, then generate first prompt information, which is used to remind the target object to reduce the contact pressure between the PPG sensor and the target object's skin until the PPG sensor The contact pressure with the skin of the target object is within the personalized optimal contact pressure interval; if the contact pressure is less than the minimum value within the personalized optimal contact pressure interval, a second prompt message is generated, and the second prompt message is used to remind The target object increases the contact pressure between the PPG sensor and the target object's skin until the contact pressure between the PPG sensor and the target object's skin is within the personalized optimal contact pressure range.
步骤103，获取PPG传感器采集的PPG信号，并根据PPG信号获取目标对象的血压值。
可选地，在本申请一些实施例中，对PPG传感器采集的PPG信号进行预处理并计算特征值，通过预先训练的血压估计模型，获取对应的目标对象的血压值。或者，在本申请其他实施中，还可获取ECG(electrocardiogram，心电图)信号，结合PPG信号、ECG信号及相应血压估计模型，获取对应的目标对象的血压值。Optionally, in some embodiments of the present application, the PPG signal collected by the PPG sensor is preprocessed and the feature value is calculated, and the blood pressure value of the corresponding target object is obtained through a pre-trained blood pressure estimation model. Alternatively, in other implementations of the present application, an ECG (electrocardiogram, electrocardiogram) signal may also be obtained, and combined with the PPG signal, the ECG signal and the corresponding blood pressure estimation model, the blood pressure value of the corresponding target object may be obtained.
根据本申请实施例的血压测量方法，根据预先确定的目标对象的个性化最优接触压力区间，在目标对象连续测量血压过程中，对PPG传感器与目标对象皮肤之间的接触压力进行控制，使得接触压力处于个性化最优接触压力区间内，可提高所采集的PPG信号质量，从而提高血压测量精度。According to the blood pressure measurement method of the embodiment of the present application, according to the predetermined optimal contact pressure interval of the target object, during the continuous blood pressure measurement of the target object, the contact pressure between the PPG sensor and the skin of the target object is controlled so that The contact pressure is within the personalized optimal contact pressure range, which can improve the quality of the collected PPG signal, thereby improving the accuracy of blood pressure measurement.
图2为本申请实施提供的一种确定个性化最优接触压力区间的方法的流程图。如图2所示，该方法可以包括但不限于以下步骤。FIG. 2 is a flow chart of a method for determining an individualized optimal contact pressure interval provided by the implementation of the present application. As shown in Fig. 2, the method may include but not limited to the following steps.
步骤201，将预设接触压力区间划分成多个接触压力子区间。
作为一种示例，预设接触压力区间可设为0.2N-2N，按照固定区间间隔0.1将预设接触压力区间划分成多个接触压力子区间0.2N-0.3N,0.3N-0.4N，…，1.9N-2N。需要说明的是，本实施例中预设接触压力区间范围与固定区间间隔数值仅为示例性的说明，并不构成对本申请的限定。As an example, the preset contact pressure interval can be set to 0.2N-2N, and the preset contact pressure interval can be divided into a plurality of contact pressure sub-intervals 0.2N-0.3N, 0.3N-0.4N according to the fixed interval of 0.1,... , 1.9N-2N. It should be noted that, in this embodiment, the preset contact pressure interval range and the fixed interval interval value are only illustrative descriptions, and do not constitute a limitation to the present application.
步骤202，获取PPG传感器在每个接触压力子区间下采集的PPG信号。
在本申请一些实施例中，可控制致动器控制PPG传感器与目标对象皮肤之间的接触压力处于不同接触压力子区间下，并采集每个接触压力子区间下采集的PPG信号。In some embodiments of the present application, the actuator can be controlled to control the contact pressure between the PPG sensor and the skin of the target subject to be in different contact pressure subintervals, and the PPG signal collected in each contact pressure subinterval is collected.
步骤203，根据每个接触压力子区间下采集的PPG信号，确定每个PPG信号的信号质量因子。Step 203: Determine the signal quality factor of each PPG signal according to the PPG signals collected under each contact pressure subinterval.
在本申请一些实施例中，可根据每个接触压力子区间下采集的PPG信号，确定每个PPG信号中的模板PPG信号与多个测试PPG信号。例如，在某一接触压力子区间下采集的10秒PPG信号，其中前2秒PPG信号作为模板PPG信号，在后8秒PPG信号中，将每一秒的PPG信号作为一个测试PPG信号。In some embodiments of the present application, a template PPG signal and a plurality of test PPG signals in each PPG signal may be determined according to the PPG signals collected under each contact pressure subinterval. For example, for the 10-second PPG signal collected under a certain contact pressure subinterval, the first 2-second PPG signal is used as a template PPG signal, and in the last 8-second PPG signal, each second of the PPG signal is used as a test PPG signal.
对模板PPG信号进行归一化处理，如公式(1)所示。对多个测试PPG信号进行归一化处理，如公式(2)所示。Normalize the template PPG signal, as shown in formula (1). Perform normalization processing on multiple test PPG signals, as shown in formula (2).
XNoRM＝ (X-μX)/σX (1)XNoRM = (X-μX )/σX (1)
YNORM＝ (Y-μY)/σY (2)YNORM = (Y-μY )/σY (2)
其中，X为测试PPG信号(向量)，XNORM为归一化后的测试PPG信号，μX为测试PPG信号的平均值，σX为测试PPG信号的标准差，Y为模板PPG信号(向量)，YNORM为归一化后的模板PPG信号，μY为模板PPG信号的平均值，σY为模板PPG信号的标准差。Among them, X is the test PPG signal (vector), XNORM is the normalized test PPG signal, μX is the average value of the test PPG signal, σX is the standard deviation of the test PPG signal, and Y is the template PPG signal (vector ), YNORM is the normalized template PPG signal, μY is the average value of the template PPG signal, and σY is the standard deviation of the template PPG signal.
根据归一化处理后的模板PPG信号YNORM和多个测试PPG信号XNORM，获取模板PPG信号和测试PPG信号与时间延迟的互相关系数。如公式(3)和公式(4)所示。According to the normalized template PPG signal YNORM and multiple test PPG signals XNORM , a cross-correlation coefficient between the template PPG signal and the test PPG signal and the time delay is obtained. As shown in formula (3) and formula (4).
其中，m表示PPG信号中的采样点下标，n表示时间延迟，fs为采样频率，ρXY表示一个测试PPG信号XNORM、模板PPG信号YNORM与时间延迟的互相关系数，max(ρXY[n])表示n取不同值的最大互相关系数ρXY，ρYY表示模板PPG信号YNORM之间与时间延迟的自相关系数，max(ρYY[n])表示n取不同值的最大自相关系数ρYY。Among them, m represents the sampling point subscript in the PPG signal, n represents the time delay, fs is the sampling frequency, ρXY represents a test PPG signal XNORM , the template PPG signal YNORM and the time delay correlation coefficient, max (ρXY [n]) represents the maximum cross-correlation coefficient ρXY of n taking different values, ρYY represents the autocorrelation coefficient between the template PPG signal YNORM and the time delay, max(ρYY [n]) represents the maximum value of n taking different values Autocorrelation coefficient ρYY .
根据模板PPG信号和测试PPG信号与时间延迟的互相关系数、以及模板PPG信号，获取多个测试PPG信号与模板PPG信号之间的多个第一信号质量因子，如公式(5)所示。并将每个PPG信号的多个第一信号质量因子的平均值确定为每个PPG信号的信号质量因子。According to the cross-correlation coefficient between the template PPG signal and the test PPG signal and the time delay, and the template PPG signal, multiple first signal quality factors between the multiple test PPG signals and the template PPG signal are obtained, as shown in formula (5). And determining the average value of the multiple first signal quality factors of each PPG signal as the signal quality factor of each PPG signal.
作为一种示例，假设预设接触压力区间划分成3个接触压力子区间，分别是接触压力子区间A，接触压力子区间B和接触压力子区间C。在接触压力子区间A下采集7秒PPG信号a，将前2秒PPG信号确定为模板PPG信号(定义为Y向量)，将后5秒PPG信号中每秒信号确定为一个测试PPG信号(定义为X向量)，分别是测试PPG信号1,测试PPG信号2,测试PPG信号3,测试PPG信号4和测试PPG信号5。分别对模板PPG信号，测试PPG信号1,测试PPG信号2,测试PPG信号3,测试PPG信号4和测试PPG信号5进行归一化处理，并获取模板PPG信号分别与测试PPG信号1,测试PPG信号2,测试PPG信号3,测试PPG信号4和测试PPG信号5之间的多个第一信号质量因子，将接触压力子区间A下的PPG信号a对应的多个第一信号质量因子的平均值确定为接触压力子区间A下的PPG信号a的信号质量因子。需要说明的是，在接触压力子区间B和接触压力子区间C采集的PPG信号所对应的信号质量因子的获取方法与接触压力子区间A采集的PPG信号a的信号质量因子的获取方法相同，在此不再赘述。As an example, assume that the preset contact pressure interval is divided into three contact pressure sub-intervals, which are contact pressure sub-interval A, contact pressure sub-interval B, and contact pressure sub-interval C. Under the contact pressure sub-interval A, the PPG signal a is collected for 7 seconds, the PPG signal of the first 2 seconds is determined as the template PPG signal (defined as the Y vector), and the second signal of the PPG signal of the next 5 seconds is determined as a test PPG signal (defined as is X vector), which are test PPG signal 1, test PPG signal 2, test PPG signal 3, test PPG signal 4 and test PPG signal 5. The template PPG signal, the test PPG signal 1, the test PPG signal 2, the test PPG signal 3, the test PPG signal 4 and the test PPG signal 5 are respectively normalized, and the template PPG signal is respectively compared with the test PPG signal 1, the test PPG signal Multiple first signal quality factors among signal 2, test PPG signal 3, test PPG signal 4 and test PPG signal 5, the average of multiple first signal quality factors corresponding to PPG signal a under contact pressure subinterval A The value is determined as the signal quality factor of the PPG signal a under contact pressure subinterval A. It should be noted that the acquisition method of the signal quality factor corresponding to the PPG signal collected in the contact pressure subinterval B and the contact pressure subinterval C is the same as the acquisition method of the signal quality factor of the PPG signal a collected in the contact pressure subinterval A, I won't repeat them here.
步骤204，根据每个PPG信号的信号质量因子，从多个接触压力子区间中确定出个性化最优接触压力区间。
需要说明的是，PPG信号的信号质量因子数值越大，则该PPG信号质量越高。故在本申请一些实施例中，可将多个PPG信号的信号质量因子中数值最大的信号质量因子确定为目标信号质量因子。将该目标信号质量因子对应的接触压力子区间确定为个性化最优接触压力区间。例如，在多个PPG信号的信号质量因子中，接触压力子区间0.5N-0.6N内采集的PPG信号所对应的信号质量因子数值最大，则将接触压力子区间0.5N-0.6N作为目标对象的个性化最优接触压力区间。It should be noted that, the larger the value of the signal quality factor of the PPG signal is, the higher the quality of the PPG signal is. Therefore, in some embodiments of the present application, the signal quality factor with the largest value among the signal quality factors of the multiple PPG signals may be determined as the target signal quality factor. The contact pressure subinterval corresponding to the target signal quality factor is determined as the personalized optimal contact pressure interval. For example, among the signal quality factors of multiple PPG signals, the signal quality factor value corresponding to the PPG signal collected in the contact pressure subinterval 0.5N-0.6N is the largest, then the contact pressure subinterval 0.5N-0.6N is used as the target object The personalized optimal contact pressure range.
还需要说明的是，目标对象的个性化最优接触压力区间可以是每次连续测量血压时确定的，还可以是首次测量时确定并存储下来的，在后续测量时直接调用存储的个性化最优接触压力区间。或者，还可以每隔预定时间重新确定目标对象的个性化最优接触压力区间，以适应目标对象的身体情况，进一步提高血压测量精度。It should also be noted that the personalized optimal contact pressure range of the target object can be determined each time the blood pressure is continuously measured, or can be determined and stored during the first measurement, and the stored personalized optimal contact pressure interval can be directly called in the subsequent measurement. Optimal contact pressure range. Alternatively, the personalized optimal contact pressure interval of the target object can be re-determined every predetermined time to adapt to the physical condition of the target object and further improve the accuracy of blood pressure measurement.
通过实施本申请实施例，在目标对象连续测量血压之前，预先确定该目标对象的个性化最优接触压力区间，以适应不同目标对象的身体情况，可在一定程度上保证后续血压测量时PPG信号的采集质量。By implementing the embodiment of the present application, before the target object continuously measures the blood pressure, the personalized optimal contact pressure interval of the target object is determined in advance to adapt to the physical conditions of different target objects, and the PPG signal during the subsequent blood pressure measurement can be guaranteed to a certain extent. collection quality.
图3为本申请实施例所提供的一种血压测量装置的示意图。如图3所示，该血压测量装置包括：负反馈控制单元301和血压计算单元302。其中，Fig. 3 is a schematic diagram of a blood pressure measurement device provided by an embodiment of the present application. As shown in FIG. 3 , the blood pressure measurement device includes: a negative
负反馈控制单元301，用于确定目标对象的个性化最优接触压力区间，并控制光电容积描记法PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内。The negative
在本申请一些实施例中，负反馈控制单元301具体用于：获取压力传感器采集的PPG传感器与目标对象皮肤之间的接触压力；将接触压力与个性化最优接触压力区间进行大小比对；响应于接触压力未处于个性化最优接触压力区间内，调整PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内。In some embodiments of the present application, the negative
在本申请一些实施例中，负反馈控制单元301具体用于：响应于接触压力大于个性化最优接触压力区间内的最大值，减小PPG传感器与目标对象皮肤之间的接触压力，直至PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内；或者，响应于接触压力小于个性化最优接触压力区间内的最小值，增大PPG传感器与目标对象皮肤之间的接触压力，直至PPG传感器与目标对象皮肤之间的接触压力处于个性化最优接触压力区间内。In some embodiments of the present application, the negative
血压计算单元302，用于获取PPG传感器采集的PPG信号，并根据PPG信号获取目标对象的血压值。The blood
可选地，在本申请一些实施例中，如图4所示，该血压测量装置还可包括确定单元403。其中，确定单元403用于将预设接触压力区间划分成多个接触压力子区间；采集获取PPG传感器在每个接触压力子区间下采集的PPG信号；根据每个接触压力子区间下采集的PPG信号，确定每个PPG信号的信号质量因子；根据每个PPG信号的信号质量因子，从多个接触压力子区间中确定出个性化最优接触压力区间。其中，图4中401和402与图3中301和302具有相同功能和结构。Optionally, in some embodiments of the present application, as shown in FIG. 4 , the blood pressure measurement device may further include a
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.
根据本申请实施例的血压测量装置，根据预先确定的目标对象的个性化最优接触压力区间，在目标对象连续测量血压过程中，对PPG传感器与目标对象皮肤之间的接触压力进行控制，使得接触压力处于个性化最优接触压力区间内，可提高所采集的PPG信号质量，从而提高血压测量精度。According to the blood pressure measurement device of the embodiment of the present application, according to the predetermined personalized optimal contact pressure interval of the target object, during the process of continuous blood pressure measurement of the target object, the contact pressure between the PPG sensor and the skin of the target object is controlled so that The contact pressure is within the personalized optimal contact pressure range, which can improve the quality of the collected PPG signal, thereby improving the accuracy of blood pressure measurement.
为了实现上述实施例，本申请还提供了一种电子设备。图5为本申请实施例所提供的一种电子设备的结构框图。如图5所示，该电子设备500包括：光电容积描记法PPG传感器501、压力传感器502、存储器503、处理器504及存储在存储器503上并可在处理器504上运行的计算机程序505，当处理器504执行计算机程序505时，实现本申请上述任一实施例所述的血压测量方法。In order to realize the above embodiments, the present application further provides an electronic device. FIG. 5 is a structural block diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 5 , the
为了实现上述实施例，本申请还提出一种非临时性计算机可读存储介质，当存储介质中的指令由电子设备的处理器被执行时，使得电子设备能够执行本申请上述任一实施例所述的血压测量方法。In order to realize the above-mentioned embodiments, the present application also proposes a non-transitory computer-readable storage medium. When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is able to execute any of the above-mentioned embodiments of the present application. The blood pressure measurement method described above.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing custom logical functions or steps of a process , and the scope of preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in substantially simultaneous fashion or in reverse order depending on the functions involved, which shall It should be understood by those skilled in the art to which the embodiments of the present application belong.
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。The logic and/or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium, For use with instruction execution systems, devices, or devices (such as computer-based systems, systems including processors, or other systems that can fetch instructions from instruction execution systems, devices, or devices and execute instructions), or in conjunction with these instruction execution systems, devices or equipment used. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use in or in conjunction with an instruction execution system, device or device. More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connection with one or more wires (electronic device), portable computer disk case (magnetic device), random access memory (RAM), Read Only Memory (ROM), Erasable and Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program can be printed, as it may be possible, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or other suitable processing if necessary. The program is processed electronically and stored in computer memory.
应当理解，本申请的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。It should be understood that each part of the present application may be realized by hardware, software, firmware or a combination thereof. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented by any one or a combination of the following techniques known in the art: a discrete Logic circuits, ASICs with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. During execution, one or a combination of the steps of the method embodiments is included.
此外，在本申请各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, each unit may exist separately physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.
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| US6394959B1 (en)* | 2000-07-05 | 2002-05-28 | Colin Corporation | Continuous blood-pressure monitor apparatus |
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