CN117679003A - Biological parameter acquisition method and device and electronic equipment - Google Patents

Abstract

The embodiment of the application provides a biological parameter acquisition method, a device and electronic equipment, which relate to the technical field of wearable equipment, acquire the contact state of each electrode by responding to a biological parameter measurement instruction, determine the position information of a target electrode if the contact state is a falling target electrode, output prompt information according to the position information of the target electrode so as to prompt a user wearing intelligent wearable equipment to adjust the contact state of the target electrode, acquire the biological parameter corresponding to the biological parameter measurement instruction when the adjusted contact state of the target electrode is in place.

Description

Biological parameter acquisition method and device and electronic equipment

Technical Field

The application relates to the technical field of wearable equipment, in particular to a biological parameter acquisition method and device and electronic equipment.

Background

Currently, in the field of wearable devices, the application of bioelectrical impedance (BIA, bioelectrical Impedance Analysis) technology is mainly performed on wearable watches and bracelets, and human body impedance is measured by contacting hands of a human body with electrodes on the watch device, so that corresponding biological parameters are obtained for human body composition analysis.

In bioelectrical impedance human body composition analysis, human body impedance measurement must require that a human body be in contact with electrodes, and when any one electrode is separated from the human body, measurement of human body impedance cannot be realized. At present, a biological parameter acquisition method based on BIA technology mainly determines whether a user is measuring by judging the legitimacy of human body impedance, and only roughly judges whether the user is measuring human body impedance, so that the quality of the finally measured biological parameter cannot be ensured.

Disclosure of Invention

In view of the above problems, embodiments of the present application provide a method, an apparatus, a chip, and an electronic device for acquiring biological parameters, so as to solve the above technical problems.

In a first aspect, an embodiment of the present application provides a method for acquiring a biological parameter, where the method is applied to an intelligent wearable device, the intelligent wearable device is provided with at least one electrode, a contact state of each electrode is acquired by responding to a biological parameter acquiring instruction, if a target electrode whose contact state is falling off exists, position information of the target electrode is determined, prompt information is output according to the position information of the target electrode, so as to prompt a user wearing the intelligent wearable device to adjust the contact state of the target electrode, and when the adjusted contact states of the target electrodes are all in place, a biological parameter corresponding to the biological parameter measuring instruction is acquired; according to the embodiment of the application, the contact state of each electrode is determined by measuring the contact impedance of each electrode, when the falling target electrode exists, a user can be accurately prompted on which electrode is in poor contact with a human body according to the position information of the target electrode, the user is guided to correctly contact the electrode, further, the biological parameters are ensured to be acquired when all the electrodes are in good contact with the human body, and the quality of the acquired biological parameters can be ensured.

In a second aspect, embodiments of the present application provide a biological parameter acquisition device, the device including:

the state acquisition module is used for responding to the biological parameter acquisition instruction, acquiring the contact impedance of each electrode and determining the contact state of each electrode;

the position acquisition module is used for determining the position information of the target electrode if the target electrode with the falling contact state exists;

the output module is used for outputting prompt information according to the position information of the target electrode so as to prompt a user wearing the intelligent wearing equipment to adjust the contact state of the target electrode;

and the acquisition module is used for acquiring the biological parameter corresponding to the biological parameter measurement instruction when the adjusted contact state of the target electrode is in place.

In a third aspect, an embodiment of the present application further provides an electronic device, including the above-mentioned biological parameter obtaining apparatus, or the above-mentioned biological parameter obtaining method.

The biological parameter acquisition method, the device and the electronic equipment provided by the embodiment of the application can solve the quality problems that whether a user is performing human body impedance measurement or not can not be roughly judged in the prior art, and finally the acquired biological parameters can not be ensured.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows an application scenario schematic diagram of a biological parameter obtaining method provided in an embodiment of the present application.

Fig. 2 shows a schematic diagram of a measured body impedance model according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a biological parameter obtaining method according to an embodiment of the present application.

Fig. 4 shows a schematic diagram of an alarm view provided in an embodiment of the present application.

Fig. 5 shows a flowchart of a biological parameter acquisition method according to an embodiment of the present application.

Fig. 6 shows a flowchart of a method for obtaining human body impedance according to an embodiment of the present application.

Fig. 7 shows a schematic structural diagram of a biological parameter acquiring apparatus according to an embodiment of the present application.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In order to better understand the solution of the present application, the following description will make clear and complete descriptions of the technical solution of the embodiment of the present application with reference to the accompanying drawings in the embodiment of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the embodiments of the present application, it should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in an article or apparatus that comprises the element.

In the description of embodiments of the present application, words such as "example" or "such as" are used to indicate exemplary, illustrative, or descriptive matter. Any embodiment or design described herein as "example" or "such as" is not necessarily to be construed as preferred or advantageous over another embodiment or design. The use of words such as "example" or "such as" is intended to present relative concepts in a clear manner.

In addition, the term "plurality" in the embodiments of the present application means two or more, and in view of this, the term "plurality" may be understood as "at least two" in the embodiments of the present application. "at least one" may be understood as one or more, for example as one, two or more. For example, including at least one means including one, two or more, and not limiting what is included, e.g., including at least one of A, B and C, then A, B, C, A and B, A and C, B and C, or A and B and C, may be included.

It should be noted that, in the embodiment of the present application, "and/or" describe the association relationship of the association object, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship.

It should be noted that in the embodiments of the present application, "connected" is understood to mean electrically connected, and two electrical components may be connected directly or indirectly between two electrical components. For example, a may be directly connected to B, or indirectly connected to B via one or more other electrical components.

As described in the background art, bioimpedance measurement is a non-invasive detection technique that uses the electrical characteristics of biological tissues and organs and their change rules to extract biomedical information related to physiological, pathological and pathological conditions of the human body. It generally applies an excitation electric signal to an object to be measured by means of electrodes provided on an electronic device such as a body fat scale or a body composition analyzer, and measures impedance data of the object to be measured according to a change generated after the excitation electric signal passes through a conductive loop of the object to be measured. In the current bio-impedance measurement, a four-electrode or eight-electrode measurement method is commonly adopted, but in the measurement method, contact impedance is generated due to the contact of an electrode and an object to be measured, and the contact impedance can greatly influence the impedance measurement result of the object to be measured, so that the accuracy of the impedance measurement result is seriously influenced, and in the measurement process, the electrode needs to be ensured to be well contacted with the skin of a user, namely, the contact impedance of the electrode is ensured to be in a preset range, so that the accuracy of the finally measured human body impedance is ensured, and the reliability of the final bio-parameter measurement result is further ensured.

However, the existing biological parameter obtaining method based on the BIA technology mainly determines whether a human body is being measured by judging the validity of the impedance of the human body, only can roughly judge whether the user is performing the impedance measurement of the human body, can not accurately prompt the user which electrodes fall off, can not guarantee the quality of the finally measured biological parameter, and can not play an effective guiding role on the posture adjustment of the user.

Based on the above, in order to accurately prompt a user which electrodes fall off and ensure the quality of the finally measured biological parameters, the embodiment of the application provides a biological parameter acquisition method, a device, a chip and electronic equipment, wherein the contact state of each electrode is determined by measuring the contact impedance of each electrode, when the falling target electrode exists, the user can be accurately prompted according to the position information of the target electrode, which electrode is in poor contact with a human body, the user is guided to correctly contact with the electrode, and further the biological parameters are ensured to be acquired when all the electrodes are in good contact with the human body, so that the quality of the acquired biological parameters can be ensured.

The biological parameter obtaining method, the biological parameter obtaining device, the biological parameter obtaining chip and the biological parameter electronic equipment provided by the embodiment of the application are described in detail below based on specific embodiments.

The biological parameter obtaining method provided by the embodiment of the application can be applied to intelligent wearable equipment, and the intelligent wearable equipment is provided with at least one electrode, wherein the intelligent wearable equipment comprises, but is not limited to, an intelligent bracelet, an oximeter and the like.

For example, describing an example in which four electrodes are provided in an intelligent wearable device, as shown in fig. 1, fig. 1 is a schematic diagram of an application scenario of a biological parameter obtaining method provided in an embodiment of the present application, where the intelligent wearable device is provided with four electrodes in the application scenario, two electrodes are disposed at the bottom of a body of the intelligent wearable device and are in contact with wrist skin of one hand of a user, and the other two electrodes are disposed at two sides of the body of the intelligent wearable device and are in contact with finger skin of the other hand of the user. As shown in fig. 2, fig. 2 is a schematic diagram of a measured human body impedance model provided in an embodiment of the present application, where fig. 2 (a) is a schematic diagram of a measured human body impedance model, and fig. 2 (b) is an equivalent schematic diagram, where zb is a human body impedance represented by zb, and zcw1, zcw2, zcf1, and zcf2 are respectively used to represent contact impedances of electrodes.

As shown in fig. 2 (b), zcw, zcw, zcf1 and zcf2 represent contact impedances of the respective electrodes, and Zb represents a human body impedance, and since the upper body of the human body forms a loop through the electrodes during measurement, an excitation current output from the first excitation electrode (corresponding to the I0 port in fig. 2 (b)) may pass through the human body to the second excitation electrode (corresponding to the I1 port in fig. 2 (b)) and then a voltage difference between the first measurement electrode (corresponding to the V0 port in fig. 2 (b)) and the second measurement electrode (corresponding to the V1 port in fig. 2 (b)) may be measured, and the human body impedance Zb may be obtained based on the excitation current and the voltage difference.

As shown in fig. 2 (b), when there is an electrode in poor contact with the skin of the user in the smart wearable device, a loop may not be formed, or the accuracy of the obtained impedance of the human body may be reduced, so before determining the biological parameter by the impedance of the human body, the contact state of each electrode needs to be determined by detecting the contact impedance of each electrode, if there is a target electrode whose contact state is falling off, the position information of the target electrode is determined, and prompt information is output according to the position information of the target electrode, so as to prompt the user wearing the smart wearable device to adjust the contact state of the target electrode, and when the adjusted contact states of the target electrodes are all in place, the biological parameter corresponding to the biological parameter measurement instruction is obtained. By measuring the contact impedance of each electrode, the contact state of each electrode is determined, when the falling target electrode exists, a user can be accurately prompted on which electrode is in poor contact with a human body according to the position information of the target electrode, the user is guided to correctly contact the electrode, further, the biological parameters are ensured to be acquired when all the electrodes are in good contact with the human body, and the quality of the acquired biological parameters can be ensured.

As shown in fig. 3, fig. 3 is a schematic flow chart of a biological parameter obtaining method provided in the embodiment of the present application, where the biological parameter obtaining method may be executed by the smart wearable device provided in fig. 1 or may be executed by an electronic device having a data processing capability, and the embodiment of the present application is not limited to this specifically, and specifically, the biological parameter obtaining method shown in fig. 3 includes at least steps S210 to S240, and is described in detail below:

step S210, in response to the biological parameter acquisition instruction, the contact impedance of each electrode is acquired, and the contact state of each electrode is determined.

In some embodiments, the biometric parameter acquisition instructions may be user-triggered, illustratively, the user triggers the biometric parameter measurement instructions through an interface view of a voice or touch-sensitive smart wearable device; in some embodiments, the biometric instruction may be automatically triggered, illustratively, the smart wearable device triggers the biometric instruction at intervals of a preset duration; in some embodiments, the biometric parameter measurement instruction may also be a biometric parameter measurement instruction triggered when the smart wearable device detects that the user is in contact with an electrode in the smart wearable device, and illustratively, the smart wearable device is a smart bracelet, and the smart bracelet triggers a biometric parameter acquisition instruction when the smart bracelet detects that the user is in contact with an electrode on the smart bracelet.

In some embodiments, the contact impedance refers to the impedance formed between the electrode and the skin of the user, and the contact impedance of each electrode in the smart wearable device may be obtained by a contact impedance measurement circuit provided by the prior art, such as CN115363556a, for example.

In some embodiments, the contact state includes a drop off and an in-place, wherein the drop off characterizes the electrode as poorly contacting the user's skin and the in-place characterizes the electrode as well contacting the user's skin.

In view of the fact that the contact resistance is high when the contact between the electrode and the skin of the user is poor, and low when the contact between the electrode and the skin of the user is good, in some embodiments, the contact resistance of each electrode may be compared with a preset resistance threshold, and the contact state of the electrode may be determined based on the comparison result, where the preset resistance threshold may be a specific value or may be a resistance range. Specifically, the method for determining the contact state of the electrode includes steps a1 to a4:

step a1, the contact impedance of each electrode is obtained.

And a2, comparing the contact impedance of each electrode with a preset impedance threshold value.

In some embodiments, the preset impedance threshold data may be queried according to the identification information of the electrode, to obtain the preset impedance threshold corresponding to the electrode. The preset impedance threshold data comprise identification information of each electrode in the intelligent wearable device and a preset impedance threshold corresponding to each identification information. It is understood that the preset impedance threshold value for each electrode may be the same or different.

Optionally, the identification information of the electrode may be an installation label of the electrode, and the identification information of the electrode may be an interface label of the electrode and a control chip in the intelligent wearable device. Optionally, the identification information of the electrode may also be the identification information of the acquired contact impedance, such as zcw1, zcw2, zcf1 and zcf2 in fig. 2.

In some embodiments, a preset impedance threshold of the smart wearable device may be obtained, and the preset impedance threshold is determined to be a preset impedance threshold. It is understood that the preset impedance threshold value for each electrode may be the same.

In some embodiments, when the preset impedance threshold is a specific value, the contact impedance of the electrode is compared with the preset impedance threshold, if the contact impedance of the electrode is greater than the preset impedance threshold, the contact impedance of the electrode is determined to be not matched with the preset impedance threshold, and if the contact impedance of the electrode is less than or equal to the preset impedance threshold, the contact impedance of the electrode is determined to be matched with the preset impedance threshold.

In some embodiments, when the preset impedance threshold is an impedance range, the contact impedance of the electrode is compared with the preset impedance threshold, if the contact impedance of the electrode is within the impedance range corresponding to the preset impedance threshold, the contact impedance of the electrode is determined to be matched with the preset impedance threshold, and if the contact impedance of the electrode is not within the impedance range corresponding to the preset impedance threshold, the contact impedance of the electrode is determined to be not matched with the preset impedance threshold.

And a3, if the contact impedance of the electrode is matched with a preset impedance threshold value, determining that the contact state of the electrode is in place.

In some embodiments, if the contact impedance of the electrode matches a preset impedance threshold corresponding to the electrode, indicating that the electrode is in good contact with the skin of the user, the contact state of the electrode is determined to be in place.

And a4, if the contact impedance of the electrode is not matched with the preset impedance threshold value, determining that the contact state of the electrode is falling.

In some embodiments, if the contact impedance of the electrode does not match a preset impedance threshold, indicating that the electrode is in poor contact with the skin of the user, determining that the contact state of the electrode is falling off.

Considering that the contact resistance of the electrodes is relatively large when the contact resistance of the electrodes with the skin of the user is poor, the contact resistance of the electrodes can be compared, the maximum contact resistance of the contact resistances of the electrodes is determined, when the maximum contact resistance of the contact resistances of the electrodes is matched with a preset resistance threshold value, the contact state of the electrodes is determined to be in place, and specifically, the other method for determining the contact state of the electrodes comprises the steps of b 1-b 5:

and b1, acquiring contact impedance of each electrode.

And b2, determining the maximum contact impedance of the contact impedances of the electrodes.

And b3, comparing the maximum contact impedance with a preset impedance threshold.

And b4, if the maximum contact impedance is matched with the preset impedance threshold value, determining that the contact state of each electrode is in place.

And b5, if the maximum contact impedance is not matched with the preset impedance threshold value, determining the contact state of the electrode corresponding to the maximum contact impedance as falling off.

In some embodiments, in the case that the maximum contact impedance does not match the preset impedance threshold, there may be electrodes whose contact impedance does not match the preset impedance threshold among the contact impedances of the electrodes other than the electrode corresponding to the maximum contact impedance, in order to identify the electrodes, the accuracy of the subsequently acquired biological parameters is ensured, in the case that the maximum contact impedance does not match the preset impedance threshold, the contact state of the electrode corresponding to the maximum contact impedance is determined to be dropped, the contact state of the remaining electrode whose contact impedance does not match the preset impedance threshold is determined to be dropped, and the contact state of the remaining electrode whose contact impedance does not match the preset impedance threshold is determined to be in place. Wherein the remaining electrodes are contact impedances of the electrodes except for the electrode corresponding to the maximum contact impedance.

For example, taking the example that the intelligent wearable device comprises 4 electrodes, when all of the 4 electrodes are not contacted with the skin of a user or only one electrode is contacted, the electrodes in the intelligent wearable device cannot form a loop, and the measured contact impedance is the same as the contact impedance in no-load state at this time, namely, the contact impedance of the 4 electrodes is the same as the maximum contact impedance threshold value; when any two electrodes are in good contact with the skin of a user, for example, the intelligent wearing device is only worn on one hand to measure, then at the moment, the contact impedance of the two electrodes is matched with a preset contact impedance threshold value, and the remaining two contact impedances are the same and have larger values and are not matched with the preset contact impedance threshold value; when any three electrodes are in good contact with the skin of a user, one of the acquired contact impedances is at a maximum value and is not matched with a preset impedance threshold value; when the four electrodes are in good contact with the skin of the user, the acquired contact impedance is the same and is matched with a preset impedance threshold.

In step S220, if there is a target electrode whose contact state is falling, the position information of the target electrode is determined.

Considering that in the existing biological parameter acquisition, when the electrode with poor contact exists, only an alarm is sent, and a user is not prompted to which electrode is dropped, when the user receives the alarm, the contact mode and the contact position of each electrode need to be adjusted, so that the biological parameter acquisition time length is increased, and the operation complexity of the user is increased. In order to ensure that a user can accurately indicate which electrode has poor contact when the electrode has poor contact, the user is guided to adjust the contact position and the contact mode of the electrode with poor contact.

The position information is used for representing the installation position of the target electrode in the intelligent wearable device or measuring the position.

In some embodiments, the location information of the target electrode may be determined from the interface identification of the target electrode.

Optionally, if there is a target electrode with a falling contact state, which indicates that there is an electrode with poor contact with the skin of the user, the mapping relationship between the pre-stored interface identifier and the position may be queried according to the interface identifier of the target electrode, so as to obtain the position information of the target electrode. The mapping relation between the interface identifier and the position is used for representing the mapping relation between the interface identifier of the electrode and the corresponding position information. It can be understood that before the intelligent wearable device goes out of the field or when the electrodes are installed, the interface identifier between each electrode and the control chip and the position information of each electrode can be determined, the position information of each electrode is associated with the interface identifier between the electrode and the control chip, the mapping relation between the interface identifier and the position is generated, and the mapping relation between the interface identifier and the position is written into the intelligent wearable device.

In some embodiments, the location information of the target electrode may be determined from an electrode identification of the target electrode.

Optionally, if there is a target electrode with a falling contact state, which indicates that there is an electrode with poor contact with the skin of the user, the mapping relationship between the pre-stored electrode identifier and the position may be queried according to the electrode identifier of the target electrode, so as to obtain the position information of the target electrode. The mapping relation between the electrode identification and the position is used for representing the mapping relation between the electrode identification of the electrode and the corresponding position information. It can be understood that before the smart wearable device goes out of the field or when the electrodes are installed, the electrode identification of each electrode is set, the position information of each electrode is determined, the electrode identification of each electrode is associated with the position information of the electrode, the mapping relation between the electrode identification and the position is generated, and the mapping relation between the electrode identification and the position is written into the smart wearable device.

Step S230, according to the position information of the target electrode, a prompt message is output to prompt a user wearing the intelligent wearable device to adjust the contact state of the target electrode.

The prompt information can be voice prompt information, text prompt information or pattern prompt information. For example, taking the intelligent wearable device as an intelligent bracelet, when the electrode at the upper left position is in poor contact with the skin of the user, the prompting information of 'poor contact at the upper left position' can be output in a voice form, the prompting information of 'poor contact at the upper left position' can be displayed in the display interface of the intelligent wearable device, and the electrode at the upper left position can be highlighted in the display interface of the intelligent wearable device, for example, the electrode at the upper left position is displayed in red.

For example, taking pattern prompt information as an example for explanation, an alarm view can be drawn according to the position information of the target electrode; and taking the alarm view as prompt information, and displaying the prompt information in the current interface view of the intelligent wearable device.

Optionally, the drawing method of the alarm view includes:

(1) And acquiring an electrode distribution view of the intelligent wearable device.

The electrode distribution view comprises the position relation among the electrodes arranged by the intelligent wearable device.

(2) And determining a target icon corresponding to the position information of the target electrode in the electrode distribution view according to the position information of the target electrode.

(3) And adjusting the color of the target icon to obtain an adjusted target electrode distribution view.

(4) And determining the adjusted target electrode distribution view as an alarm view.

Alternatively, the color of the target icon may be adjusted to red, or the color of the target icon may be adjusted to gray.

For example, taking the example that the smart wearable device includes four electrodes, when the electrode at the upper left position is in poor contact with the skin of the user, as shown in fig. 4, fig. 4 is a schematic diagram of an alarm view provided in the embodiment of the present application, where fig. 4 (a) is an electrode distribution view of the smart wearable device, and fig. 4 (b) is an adjusted target electrode distribution view.

Step S240, when the adjusted contact state of the target electrode is in place, acquiring the biological parameter corresponding to the biological parameter measurement instruction.

In some embodiments, when the adjusted contact states of the target electrodes are in place, the human body impedance of the measurement electrodes is read, and the biological parameters are obtained according to the mapping relation between the human body impedance and the biological parameters.

In some embodiments, if the contact state of each electrode is in place, a biological parameter corresponding to the biological parameter measurement instruction is obtained.

According to the biological parameter acquisition method, the contact state of each electrode is determined by measuring the contact impedance of each electrode, when the falling target electrode exists, a user can be accurately prompted on which electrode is in poor contact with a human body according to the position information of the target electrode, the user is guided to correctly contact the electrode, further the biological parameter is ensured to be acquired when all the electrodes are in good contact with the human body, and the quality of the acquired biological parameter can be ensured.

In order to achieve accurate prompt of the falling electrode, in some embodiments, when the contact state is the falling target electrode, identification information corresponding to the target electrode is determined according to impedance acquisition data of the intelligent wearable device, and position information of the target electrode is determined according to the identification information corresponding to the target electrode. The impedance acquisition data comprise identification information of each electrode and contact impedance of each electrode, which are set by the intelligent wearable equipment.

Alternatively, the identification information may be an electrode identification, an interface identification, or contact impedance identification.

In some embodiments, the location information of the target electrode may be determined according to the above step S220 according to the identification information corresponding to the target electrode.

In some embodiments, after determining the position information of the target electrode, a prompt message may be generated according to the step S240, and the prompt message may be output to prompt the user to adjust the contact mode or the contact position of the target electrode, so as to adjust the contact mode of the target electrode.

In some embodiments, after the prompt information is output, the intelligent wearable device may obtain the current contact impedance of each electrode after a preset time interval, obtain the current contact state of each electrode, and obtain the biological parameter corresponding to the biological parameter measurement instruction when determining that the adjusted contact state of the target electrode is in place based on the current contact state of each electrode.

In some embodiments, a measuring electrode and an exciting electrode are arranged in the intelligent wearable device, as shown in fig. 2, the upper body of the human body forms a loop through the measuring electrode and the exciting electrode, the impedance of the human body is obtained by obtaining the current of the measuring electrode and the exciting electrode and the voltage between the measuring electrode and the exciting electrode, when the intelligent wearable device determines that each electrode (namely, the measuring electrode and the exciting electrode) is well contacted with the skin, the upper body of the human body forms a loop through the measuring electrode and the exciting electrode, the impedance of the human body of the measuring electrode can be obtained, and biological parameters are obtained. Specifically, as shown in fig. 5, fig. 5 is a schematic flow chart of a biological parameter obtaining method according to an embodiment of the present application, where the biological parameter obtaining method includes steps S241 to S242:

Step S241, a human body impedance measurement mode is started, and human body impedance at each sampling moment in a preset sampling time period is obtained.

Step S242, obtaining biological parameters according to the human body impedance corresponding to each sampling time.

Optionally, the sampling time in the preset sampling time period can be determined, the human body impedance at each sampling time in the preset sampling time period is obtained, the statistical characteristics of the human body impedance are obtained based on the human body impedance at each sampling time period, and the biological parameters are obtained based on the statistical characteristics of the human body impedance and the mapping relation between the preset impedance and the biological parameters. The statistical characteristics of the human body impedance may be the average value, the maximum value, etc. of the human body impedance at each sampling time.

Optionally, the sampling time in the preset sampling time period can be determined, the human body impedance of each sampling time in the preset sampling time period is obtained, the instantaneous biological parameters of each sampling time are obtained according to the human body impedance of each sampling time and the mapping relation between the preset impedance and the biological parameters, and the biological parameters are obtained based on the instantaneous biological parameters of each sampling time.

For example, the mean, maximum, median, or mode of the instantaneous biological parameter at each sampling instant may be determined as the biological parameter.

Considering that in the process of measuring the human body impedance, when the gesture of a user changes or the intelligent wearing equipment moves, the contact state between the electrode and the skin of the user in the intelligent wearing equipment changes, if the acquired human body impedance is still adopted to determine the biological parameter, the acquired biological parameter has errors, based on the errors, in order to ensure the accuracy of acquiring the biological parameter, in some embodiments, in the process of acquiring the human body impedance at each sampling moment within a preset sampling time period, the contact impedance of each electrode at each sampling moment is acquired simultaneously, based on the contact impedance of each electrode, the contact state of each electrode at each sampling moment is determined, when the contact state of each electrode is falling, the acquisition of the human body impedance is stopped, alarm information is output, the acquired human body impedance is discarded, the current contact state of each electrode is detected, and when the current contact state of each electrode is in place, the biological parameter corresponding to the biological parameter measurement instruction is reacquired. Therefore, when the gesture of the user changes or the intelligent wearing equipment moves, the contact state change condition between the electrode and the skin of the user in the intelligent wearing equipment can be identified, and when the electrode falls off in the wearing equipment, alarm information can be timely output, the acquisition of the impedance of the human body is stopped, and the reliability of finally acquired biological parameters is further ensured.

Optionally, considering that in the process of obtaining the human body impedance, if the intelligent wearing equipment shakes, or the user shakes, the posture of the user changes, or the intelligent wearing equipment moves, if the electrode in the wearing equipment is detected to fall off, the obtaining of the human body impedance is stopped, the obtaining time length of the biological parameter is increased, based on this, in order to prevent misjudgment of the contact state caused by shaking, in some embodiments, in the process of obtaining the human body impedance at each sampling time in the preset sampling time length, the contact impedance of each electrode at each sampling time is obtained at the same time, based on the contact impedance of each electrode, the contact state of each electrode at each sampling time is determined, the falling-off times of each electrode are recorded, when the falling-off times are greater than or equal to a threshold value of the preset times, the obtaining of the human body impedance is stopped, alarm information is output, the obtained human body impedance is discarded, the current contact state of each electrode is detected, and when the current contact state of each electrode is in place, the biological parameter corresponding to the biological parameter measurement instruction is reacquired.

Specifically, for each sampling time, the method for obtaining the human body impedance at each sampling time provided as shown in fig. 6 is repeatedly executed, and in the case that the sampling time length satisfies the preset sampling time length, the obtained human body impedance at the sampling time is obtained. When the human body impedance measurement mode is started, the intelligent wearable device counts time and counts sampling duration. The time intervals between the sampling moments are the same. The illustrated method for acquiring the impedance of each sample human body includes steps S2411 to S2415:

In step S2411, the human body impedance at the sampling time and the contact state of each electrode at the sampling time are acquired.

In some embodiments, the contact impedance of each electrode at the sampling time may be obtained, and the contact state of each electrode at the sampling time may be obtained according to the step S210 described above according to the contact impedance of each electrode at the sampling time.

In step S2412, if the contact state of each electrode at the sampling time is in place, the human body impedance at the sampling time is saved.

It can be understood that under the condition that the contact state of each electrode at the sampling time is in place, the acquisition of the human body impedance is continuously executed, whether the sampling time length meets the preset sampling time length or not is detected, when the sampling time length meets the preset sampling time length, the acquisition of the human body impedance is stopped, the human body impedance at each sampling time is obtained, and when the sampling time length does not meet the preset sampling time length, the acquisition of the human body impedance is continuously executed. And when the sampling time length is greater than or equal to the preset sampling time length, determining that the sampling time length meets the preset sampling time length, and correspondingly, when the sampling time length is less than the preset sampling time length, determining that the sampling market does not meet the preset sampling time length.

In some embodiments, if the contact state of each electrode at the sampling time is in place, which means that the electrode is in good contact with the skin of the user at the sampling time, the body impedance at the sampling time is saved.

Step S2413, if the contact state of at least one electrode is falling off at the sampling time, obtaining the falling-off times at the sampling time according to the pre-stored historical falling-off times.

In step S2414, if the number of falling times is smaller than the preset number of times threshold, the body impedance at the sampling time is saved.

Step S2415, if the falling frequency of the sampling time is greater than or equal to the preset frequency threshold, discarding the human body impedance of the sampling time, stopping acquiring the biological parameter, and outputting the alarm information.

The historical falling-off times are used for representing the times of the intelligent wearable device when detecting that the contact state of the electrode is falling off at the historical sampling time after the intelligent wearable device starts the human impedance measurement mode, and it is understood that the historical falling-off times are +1 if the contact state of at least one electrode in the electrode is detected to be falling off at each historical sampling time.

In some embodiments, the shedding times of the sampling time can be obtained through the pre-stored historical shedding times +1, the shedding times of the sampling time are compared with a preset time threshold, if the shedding times are smaller than the preset time threshold, the shedding times of the sampling time are determined to be new historical shedding times in order to reduce shaking and improve the efficiency of acquiring biological parameters, the human body impedance of the sampling time is saved, the human body impedance of the next sampling time is acquired, and the contact state of each electrode at the next sampling time is obtained.

In some embodiments, if the number of falling-off times is greater than or equal to a preset number of times threshold, to ensure accuracy of the acquired biological parameter, discarding the human body impedance at the sampling time, stopping acquiring the biological parameter, and outputting alarm information. The alarm information is used for prompting the user that the electrode falls off.

Alternatively, the alarm information may be generated according to the steps S220 to S230, and the alarm information may be output.

In some embodiments, after the alarm information is output, the intelligent wearable device obtains the current contact state of each electrode, if the current contact state of each electrode is in place, the biological parameter corresponding to the biological parameter measurement instruction is re-obtained, if the current contact state is a falling electrode, new prompt information is output according to the steps S220 to S230, so that the steps are repeated until the current contact state of each electrode is in place, and the biological parameter corresponding to the biological parameter measurement instruction is re-obtained.

In some embodiments, the contact state of each electrode at the next sampling time is processed according to the above step S2412 or step S2413, and when the sampling time period reaches the preset sampling time period, the biological parameter acquisition is stopped, and based on the human body impedance at each sampling time, the biological parameter is obtained according to the above step S242.

In some embodiments, for the contact state of each electrode at the next sampling time, if the contact state of at least one electrode at the next sampling time is falling, the falling frequency of the next sampling time is obtained according to the prestored historical falling frequency, if the falling frequency is greater than or equal to the preset frequency threshold, the human body impedance at the next sampling time is discarded to ensure the accuracy of the acquired biological parameter, the biological parameter acquisition is stopped, and the alarm information is output.

In some embodiments, in order to further reduce the jitter, in step S2415, when the electrode of the smart wearable device falls off continuously for a preset number of times within a preset sampling period, the human body impedance at the sampling time is discarded, the acquisition of the biological parameter is stopped, and the alarm information is output. Specifically, step S2415 includes steps c1 to c3:

step c1, determining that the historical contact state exists in each historical sampling time as a falling target historical sampling time according to the historical contact state of each electrode at each historical sampling time before the sampling time.

And c2, if the time of each target historical sampling moment is continuous and the falling-off times of the sampling moment is greater than or equal to a preset time threshold, discarding the human body impedance at the sampling moment, stopping acquiring biological parameters, and outputting alarm information.

In some embodiments, if the time of each target historical sampling time is continuous and the falling number of sampling times is greater than or equal to the preset number threshold, it is indicated that the electrode of the intelligent wearable device falls off continuously by the preset number threshold, and in order to ensure the reliability of the finally obtained biological parameter, the human body impedance at the sampling time is discarded, the biological parameter obtaining is stopped, and the alarm information is output.

Alternatively, the position information of the current target electrode at the sampling time when the contact state is falling may be determined according to the above step S220, the alarm information may be generated according to the above step S230 based on the position information of the current target electrode at the sampling time, and the alarm information may be output.

And c3, if the time of each target historical sampling moment is discontinuous and the falling-off times of the sampling moment is greater than or equal to a preset time threshold, saving the human body impedance of the sampling moment, and acquiring the human body impedance of the next sampling moment and the contact state of each electrode at the next sampling moment.

According to the biological parameter acquisition method, in the human body impedance acquisition process, the contact state of the electrode is detected simultaneously, the accuracy of human body impedance is ensured based on the contact state of the electrode, and the reliability of the acquired biological parameter is further ensured.

According to the biological parameter acquisition method, the contact state of each electrode is determined by measuring the contact impedance of each electrode, when the falling target electrode exists, a user can be accurately prompted on which electrode is in poor contact with a human body according to the position information of the target electrode, the user is guided to correctly contact the electrode, further the biological parameter is ensured to be acquired when all the electrodes are in good contact with the human body, and the quality of the acquired biological parameter can be ensured.

In order to better implement the biological parameter acquiring method provided in the embodiment of the present application, based on the embodiment of the biological parameter acquiring method, the embodiment of the present application provides a biological parameter acquiring device, as shown in fig. 7, fig. 7 is a schematic structural diagram of the biological parameter acquiring device provided in the embodiment of the present application, where the biological parameter acquiring device includes:

the state acquisition module is used for responding to the biological parameter measurement instruction, acquiring the contact impedance of each electrode and determining the contact state of each electrode;

the position acquisition module is used for determining the position information of the target electrode if the target electrode with the falling contact state exists;

the output module is used for outputting prompt information according to the position information of the target electrode so as to prompt a user wearing the intelligent wearable device to adjust the contact state of the target electrode;

And the acquisition module is used for acquiring the biological parameters corresponding to the biological parameter measurement instruction when the contact states of the adjusted target electrodes are in place.

In some embodiments, the status acquisition module is configured to:

acquiring contact impedance of each electrode;

for each electrode, comparing the contact impedance of the electrode with a preset impedance threshold;

if the contact impedance of the electrode is matched with a preset impedance threshold value, determining that the contact state of the electrode is in place;

if the contact impedance of the electrode is not matched with the preset impedance threshold, determining that the contact state of the electrode is falling.

In some embodiments, the status acquisition module is configured to:

acquiring contact impedance of each electrode;

determining the maximum contact impedance of the contact impedances of the electrodes;

if the maximum contact impedance is matched with the preset impedance threshold, determining that the contact state of each electrode is in place;

and if the maximum contact impedance is not matched with the preset impedance threshold, determining the contact state of the electrode corresponding to the maximum contact impedance as falling off.

In some embodiments, the location acquisition module is configured to:

if there is a target electrode whose contact state is falling off, then

And determining the position information of the target electrode according to the identification information corresponding to the target electrode.

In some embodiments, the output module is configured to:

drawing an alarm view according to the position information of the target electrode;

and taking the alarm view as prompt information, and displaying the prompt information in the current interface view of the intelligent wearable device.

In some embodiments, the output module is configured to:

acquiring an electrode distribution view of intelligent wearable equipment; the electrode distribution view comprises the position relation among the electrodes arranged by the intelligent wearable equipment;

determining a target icon corresponding to the position information of the target electrode in the electrode distribution view according to the position information of the target electrode;

adjusting the color of the target icon to obtain an adjusted target electrode distribution view;

and determining the adjusted target electrode distribution view as an alarm view.

In some embodiments, the obtaining module is configured to:

if the contact state of each electrode is in place, acquiring the biological parameter corresponding to the biological parameter measurement instruction.

In some embodiments, the obtaining module is configured to:

starting a human body impedance measurement mode, and acquiring human body impedance at each sampling moment in a preset sampling time period;

and obtaining biological parameters according to the human body impedance corresponding to each sampling moment.

In some embodiments, the obtaining module is configured to:

the following operations are repeatedly executed for each sampling time until the sampling time length meets the preset sampling time length, and the human body impedance of each sampling time is obtained:

acquiring the human body impedance at the sampling moment and the contact state of each electrode at the sampling moment;

if the contact state of each electrode at the sampling moment is in place, the human body impedance at the sampling moment is saved;

if the contact state of at least one electrode at the sampling moment is falling off, the falling off times at the sampling moment are obtained according to the prestored historical falling off times, and if the falling off times are smaller than a preset times threshold value, the human body impedance at the sampling moment is saved.

In some embodiments, the obtaining module is configured to:

if the contact state of at least one electrode is falling off at the sampling moment, obtaining the falling-off times at the sampling moment according to the prestored historical falling-off times;

according to the historical contact state of each electrode at each historical sampling time before the sampling time, determining that the historical contact state exists in each historical sampling time as a falling target historical sampling time;

if the time of each target historical sampling moment is continuous and the falling-off times of the sampling moment is greater than or equal to a preset time threshold, discarding the human body impedance of the sampling moment, stopping acquiring biological parameters, and outputting alarm information.

In some embodiments, the obtaining module is configured to:

acquiring the current contact state of each electrode;

and if the current contact state of each electrode is in place, re-acquiring the biological parameters corresponding to the biological parameter measurement instructions.

According to the biological parameter acquisition device, the contact state of each electrode is determined by measuring the contact impedance of each electrode, when the falling target electrode exists, a user can be accurately prompted on which electrode is in poor contact with a human body according to the position information of the target electrode, the user is guided to correctly contact the electrode, and further the biological parameter is ensured to be acquired when all the electrodes are in good contact with the human body, so that the quality of the acquired biological parameter can be ensured.

The embodiment of the application also provides electronic equipment, which comprises an equipment main body and a chip arranged in the equipment theme. The electronic device may be, but is not limited to, a weight scale, a body fat scale, a nutritional scale, a pulse oximeter, a body composition analyzer, a smart wearable device. Smart wearable devices include, but are not limited to, smart watches, smart bracelets. According to the electronic equipment, the contact state of each electrode is obtained by responding to the biological parameter measurement instruction, if the contact state is the falling target electrode, the position information of the target electrode is determined, prompt information is output according to the position information of the target electrode, so that a user wearing the intelligent wearing equipment is prompted to adjust the contact state of the target electrode, and when the adjusted contact states of the target electrode are all in place, the technical means of obtaining biological parameters corresponding to the biological parameter measurement instruction can be used for solving the technical problems that whether the user is performing human body impedance measurement or not and the quality of the finally measured biological parameters cannot be guaranteed in the prior art.

The foregoing description is not intended to limit the preferred embodiments of the present application, but is not intended to limit the scope of the present application, and any such modifications, equivalents and adaptations of the embodiments described above in accordance with the principles of the present application should and are intended to be within the scope of the present application, as long as they do not depart from the scope of the present application.

Claims (12)

1. A method of acquiring biological parameters, the method being applied to a smart wearable device provided with at least one electrode, the method comprising:

responding to a biological parameter measurement instruction, acquiring contact impedance of each electrode, and determining the contact state of each electrode;

if a target electrode with a falling contact state exists, determining the position information of the target electrode;

outputting prompt information according to the position information of the target electrode to prompt a user wearing the intelligent wearing equipment to adjust the contact state of the target electrode;

And when the adjusted contact state of the target electrode is in place, acquiring the biological parameter corresponding to the biological parameter measurement instruction.

2. The method of claim 1, wherein said obtaining contact impedance of each of said electrodes, determining contact status of each of said electrodes, comprises:

acquiring contact impedance of each electrode;

comparing the contact impedance of the electrodes with a preset impedance threshold for each electrode;

if the contact impedance of the electrode is matched with the preset impedance threshold, determining that the contact state of the electrode is in place;

and if the contact impedance of the electrode is not matched with the preset impedance threshold, determining that the contact state of the electrode is falling.

3. The method of claim 1, wherein said obtaining contact impedance of each of said electrodes, determining contact status of each of said electrodes, comprises:

acquiring contact impedance of each electrode;

determining a maximum contact impedance of the contact impedances of the electrodes;

if the maximum contact impedance is matched with a preset impedance threshold, determining that the contact state of each electrode is in place;

and if the maximum contact impedance is not matched with a preset impedance threshold, determining the contact state of the electrode corresponding to the maximum contact impedance as falling off.

4. The method according to claim 1, wherein determining the positional information of the target electrode if there is the target electrode whose contact state is falling off includes:

if the target electrode with the falling contact state exists, determining the position information of the target electrode according to the identification information corresponding to the target electrode.

5. The method according to claim 1, wherein the outputting of the hint information according to the position information of the target electrode includes:

drawing an alarm view according to the position information of the target electrode;

and taking the alarm view as prompt information, and displaying the prompt information in the current interface view of the intelligent wearable device.

6. The method of claim 5, wherein the drawing an alert view from the positional information of the target electrode comprises:

acquiring an electrode distribution view of the intelligent wearable device; the electrode distribution view comprises the position relation among the electrodes arranged by the intelligent wearable equipment;

determining a target icon corresponding to the position information of the target electrode in the electrode distribution view according to the position information of the target electrode;

Adjusting the color of the target icon to obtain an adjusted target electrode distribution view;

and determining the adjusted target electrode distribution view as an alarm view.

7. The method according to any one of claims 1 to 6, wherein the acquiring the biological parameter corresponding to the biological parameter measurement instruction includes:

starting a human body impedance measurement mode, and acquiring human body impedance at each sampling moment in a preset sampling time period;

and obtaining biological parameters according to the human body impedance corresponding to each sampling moment.

8. The method of claim 7, wherein the obtaining the body impedance for each sampling instant within the preset sampling period comprises:

repeatedly executing the following operations on each sampling time until the sampling time length meets the preset sampling time length, and obtaining the human body impedance of each sampling time:

acquiring the human body impedance at the sampling moment and the contact state of each electrode at the sampling moment;

if the contact state of each electrode at the sampling moment is in place, preserving the human body impedance at the sampling moment;

and if the contact state of at least one electrode at the sampling moment is falling off, obtaining the falling off times at the sampling moment according to the prestored historical falling off times, and if the falling off times are smaller than a preset time threshold, storing the human body impedance at the sampling moment.

9. The method of claim 8, wherein the acquiring the body impedance at the sampling time and the contact state of each of the electrodes after the sampling time further comprises:

if the contact state of at least one electrode at the sampling moment is falling off, obtaining the falling off times at the sampling moment according to the prestored historical falling off times;

according to the historical contact state of each electrode at each historical sampling time before the sampling time, determining a target historical sampling time in which the historical contact state is falling in each historical sampling time;

if the time of each target historical sampling moment is continuous and the falling-off times of the sampling moment is greater than or equal to a preset time threshold, discarding the human body impedance at the sampling moment, stopping acquiring biological parameters, and outputting alarm information.

10. The method of claim 9, wherein discarding the body impedance at the sampling time, stopping the biometric parameter acquisition, and outputting the alert information, the method further comprises:

acquiring the current contact state of each electrode;

and if the current contact state of each electrode is in place, re-acquiring the biological parameters corresponding to the biological parameter measurement instructions.

11. A biological parameter acquisition device, the device comprising:

the state acquisition module is used for responding to the biological parameter measurement instruction, acquiring the contact impedance of each electrode and determining the contact state of each electrode;

the position acquisition module is used for determining the position information of the target electrode if the target electrode with the falling contact state exists;

the output module is used for outputting prompt information according to the position information of the target electrode so as to prompt a user wearing the intelligent wearing equipment to adjust the contact state of the target electrode;

and the acquisition module is used for acquiring the biological parameter corresponding to the biological parameter measurement instruction when the adjusted contact state of the target electrode is in place.

12. An electronic device comprising the biological parameter acquiring method according to any one of claims 1 to 10, or comprising the biological parameter acquiring apparatus according to claim 11.