CN117297563A - Physiological signal measurement method and device and electronic equipment - Google Patents

Abstract

The embodiment of the application provides a physiological signal measuring method, a physiological signal measuring device and electronic equipment, which relate to the technical field of intelligent terminals and are used for responding to a physiological signal measuring instruction to acquire contact impedance of at least one electrode; determining a first contact impedance threshold, and determining the wearing state of the wearing equipment according to the first contact impedance threshold and the contact impedance; based on the wearing state of the wearing equipment, physiological signals corresponding to the physiological signal measurement instructions are collected. In physiological signal measurement, the wearing state of the wearing equipment is determined through the contact impedance and the first contact impedance threshold value, and when physiological signal measurement is ensured through wearing state identification, the back of the wearing equipment main body is ensured to be well contacted with human skin, so that a good measuring environment is provided, and the accuracy of a measuring result is ensured.

Description

Physiological signal measurement method and device and electronic equipment

Technical Field

The application relates to the technical field of intelligent terminals, in particular to a physiological signal measurement method, a physiological signal measurement device and electronic equipment.

Background

At present, when the back of a main body of the intelligent wearing equipment is in contact with human skin, physiological signals such as electrocardio, pulse, heart rate, respiration, blood oxygen, body temperature and the like of a user are measured through an electrode or a light-emitting diode on the back of the main body of the wearing equipment.

In practical application, when wearing the equipment and wearing the pine, wearing equipment main part back and human skin contact failure, or wearing equipment appears the relative slip, can influence electrode signal or optical signal's quality, and then influence physiological signal measuring accuracy.

Disclosure of Invention

In view of the above problems, embodiments of the present application provide a physiological signal measurement method, device and electronic equipment, so as to solve the above technical problems.

In a first aspect, an embodiment of the present application provides a physiological signal measurement method applied to a wearable device, where the wearable device is provided with a plurality of electrodes, the method including: acquiring contact impedance of at least one of the electrodes in response to a physiological signal measurement instruction; determining a first contact impedance threshold, and determining the wearing state of the wearable device according to the first contact impedance threshold and the contact impedance; based on the wearing state of the wearing equipment, physiological signals corresponding to the physiological signal measurement instructions are collected. In physiological signal measurement, the wearing state of the wearing equipment is determined through the contact impedance and the first contact impedance threshold value, and when physiological signal measurement is ensured through wearing state identification, the back of the wearing equipment main body is ensured to be well contacted with human skin, so that a good measuring environment is provided, and the accuracy of a measuring result is ensured.

In a second aspect, the present application further provides a physiological signal measurement apparatus, including an impedance measurement module, a status detection module, and a signal acquisition module;

the impedance measurement module is used for acquiring the contact impedance of at least one electrode in the wearable device;

the state detection module is used for determining a first contact impedance threshold value and determining the wearing state of the wearing equipment according to the first contact impedance threshold value and the contact impedance;

the signal acquisition module is used for acquiring the physiological signals corresponding to the physiological signal measurement instructions based on the wearing state of the wearing equipment.

According to the physiological signal measurement method, the physiological signal measurement device and the electronic equipment, the problem of inaccurate physiological signal measurement caused by low wearing state detection accuracy of the wearing equipment can be solved, and in physiological signal measurement, the contact impedance of at least one electrode in the wearing equipment is obtained by responding to a physiological signal measurement instruction; determining a first contact impedance threshold, and determining the wearing state of the wearing equipment according to the first contact impedance threshold and the contact impedance; based on the wearing state of the wearing equipment, physiological signals corresponding to the physiological signal measurement instructions are collected, so that the back of the wearing equipment main body can be ensured to be well contacted with human skin, a good measurement environment is provided, and the accuracy of a measurement result is 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 a schematic diagram of an application scenario of physiological signal measurement provided in an embodiment of the present application.

Fig. 2 shows a flow chart of a physiological signal measurement method according to an embodiment of the present application.

Fig. 3 shows a schematic diagram of a wearable device provided in an embodiment of the present application.

Fig. 4 shows a schematic flow chart of a physiological signal measurement method based on feedback adjustment according to an embodiment of the present application.

Fig. 5 is a flowchart illustrating a method for updating a touch impedance threshold according to an embodiment of the present application.

Fig. 6 is a flow chart illustrating another method for measuring physiological signals according to an embodiment of the present application.

Fig. 7 shows a schematic structural diagram of a physiological signal measuring device 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 a process, method, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, 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.

As described in the background art, when the wearing device is worn too loose, the back of the wearing device main body is in poor contact with the skin of the human body, or the wearing device slides relatively, the quality of electrode signals or optical signals can be affected, and then the accuracy of physiological signals acquired by the wearing device is reduced, so that the wearing state detection is required before the physiological signals are acquired, and further the wearing device is ensured to be in good contact with the skin of the human body. At present, wearing state detection of the wearing equipment is mainly realized through capacitance or PPG (photoplethysmographic, chinese) signals, or a user is prompted through instructions and interface display that the wearing equipment cannot be worn too loose in the using process, but the wearing equipment is difficult to accurately judge the wearing state of the wearing equipment due to individual differences of the user and the impression of using environment, so that the accuracy of the acquired physiological signals is difficult to guarantee.

Based on this, in order to improve the accuracy of the wearing state detection result of the wearable device and further improve the accuracy of the acquired physiological signals, the embodiment of the application provides a physiological signal measurement method, device and electronic device.

The physiological signal measuring method, the physiological signal measuring device and the electronic equipment provided by the embodiment of the application are described in detail below based on specific embodiments.

The physiological signal measurement method provided by the embodiment of the application can be applied to a biological measurement device, such as a smart wearable device, wherein the smart wearable device comprises, but is not limited to, a smart watch, a smart bracelet, a head-mounted device, an oximeter and the like. For example, taking an intelligent wearable device as an intelligent watch for illustration, as shown in fig. 1, fig. 1 is a schematic diagram of an application scenario of physiological signal measurement provided in an embodiment of the present application, where the application scenario of physiological signal measurement includes the intelligent wearable device and a target object (i.e., a user), in the shown application scenario, the intelligent wearable device responds to a physiological signal measurement instruction, obtains contact impedance of at least one electrode in the wearable device, determines a first contact impedance threshold, determines a wearing state of the wearable device according to the first contact impedance threshold and the contact impedance, acquires physiological signals corresponding to the physiological signal measurement instruction based on the wearing state of the wearable device, and obtains biological information such as heart rate, pulse, blood oxygen saturation and the like of the target object. Wherein the target object includes, but is not limited to, humans and animals. The wearing state of the wearing equipment can be understood to comprise loose wearing and tight wearing, and the wearing equipment can be understood to acquire physiological signals corresponding to the physiological signal measurement instructions when the wearing state of the wearing equipment is tight wearing, and output prompt information to prompt the wearing state of a target object to be adjusted when the wearing state of the wearing equipment is loose wearing, and acquire physiological signals corresponding to the physiological signal measurement instructions when the wearing state of the wearing equipment is detected to be tight wearing.

In some embodiments, as shown in fig. 1, the smart wearable device includes a plurality of electrodes, a controller 101, an impedance measurement module 102, and a wearing state identification module 103, and a physiological signal acquisition module 104. The controller 101 may be a Chip, such as an SOC (System on Chip) Chip, a brain-like Chip, a bionic Chip, or the like; the physiological signal acquisition module 104 may be a sensor, such as a photoelectric sensor, blood oxygen sensor, or the like; the impedance measurement module 102 is disposed inside the wearable device and connected to the plurality of electrodes, and is configured to apply excitation current to the skin of the target object through any two electrodes, measure a voltage difference between the two electrodes, and obtain contact impedance of the electrodes according to the excitation current and the voltage difference.

In some embodiments, the electrode may be disposed on the back of the wearable device, or may be disposed on a side surface or a front surface of the wearable device, or may be disposed on both the back and the side surface of the wearable device, or may be disposed on both the back and the front surface of the wearable device, which is not specifically limited in this embodiment of the present application.

In some embodiments, the impedance measurement module 102, and the wearing state identification module 103 and the physiological signal acquisition module 104 are electrically connected to the controller 101, respectively.

In some embodiments, when the wearable device performs physiological signal measurement, the controller 101 applies excitation current to the skin of the target object through the electrodes in response to the physiological signal measurement instruction, and measures a voltage difference between the electrodes, obtains contact impedance of the electrodes according to the excitation current and the voltage difference, and transmits the contact impedance to the wearing state recognition module 103; the wearing state identifying module 103 determines a first contact impedance threshold, determines the wearing state of the wearing equipment according to the first contact impedance threshold and the contact impedance, and returns the wearing state to the control module; the control module is based on the wearing state of the wearing device, when the wearing state is tight wearing, the physiological signal acquisition module 104 is controlled to acquire physiological signals corresponding to the physiological signal measurement instructions, when the wearing state is loose wearing, the control module outputs prompt information to prompt the wearing state of the target object to be adjusted, and when the adjusted wearing state is detected to be tight wearing, the wearing device acquires physiological signals corresponding to the physiological signal measurement instructions.

Based on the application scenario provided in fig. 1, the embodiment of the present application provides a physiological signal measurement method, as shown in fig. 2, fig. 2 is a flow chart of the physiological signal measurement method provided in the embodiment of the present application, and the physiological signal measurement method shown in fig. 2 may be applied to the smart wearable device in fig. 1 or may be applied to an electronic device with data processing capability, which is not limited in this embodiment of the present application, and specifically, the physiological signal measurement method shown in fig. 1 at least includes steps S110 to S130, which is described in detail below:

step S110, in response to the physiological signal measurement instruction, acquiring a contact impedance of at least one electrode.

Optionally, the physiological signal measurement instruction may be user-triggered, e.g., the wearable device displays a physiological signal measurement interface view, and the user inputs a physiological signal measurement operation based on the physiological signal measurement interface view, generating the physiological signal measurement instruction. Alternatively, the physiological signal measurement instruction may be automatically triggered, for example, the wearable device periodically performs physiological signal acquisition, and triggers the physiological signal measurement instruction every predetermined time period.

In some embodiments, the plurality of electrodes may include a pressing electrode disposed on a first surface of the wearable device, the first surface being a surface of the wearable device that is not in contact with the skin of the user. Illustratively, taking a wrist-worn device as an example, the first surface may be any one of a side surface that does not directly conform to the skin of the user or a front surface that is remote from the wrist of the user;

In some embodiments, the plurality of electrodes may further protect a bottom electrode disposed on a second surface of the wearable device, the second surface being a surface of the wearable device that conforms to the skin of the user. Illustratively, taking a wrist-worn device as an example, the second surface may be a back surface that directly conforms to the skin of the user, i.e., a surface that is proximate to the wrist of the user;

as a specific embodiment, the second surface of the wearing device may be provided with at least one set of bottom electrodes, each bottom electrode set comprising two electrode pads, and the first surface of the wearing device may be provided with at least one set of pressing electrodes, each set of pressing electrodes comprising two electrode pads. Alternatively, the electrode pads in each set of pressing electrodes may be disposed on the same side or may be disposed on different sides. For example, a set of bottom electrodes are arranged on the back surface of the wearable device, a set of pressing electrodes are arranged on the side surface of the wearable device, and two electrode plates of the pressing electrode set are arranged on the same side, as shown in fig. 3, two electrode plates are arranged on the back surface of the wearable device, and two electrode plates are arranged on the side surface of the wearable device.

Optionally, the electronic device may obtain an average contact impedance of each electrode pad within a preset period of time, or may obtain an instantaneous contact impedance of each electrode pad. Exemplary embodiments. Taking the bottom electrode group as an example, the average contact impedance of each electrode plate in the bottom electrode group in a preset time period can be obtained, or the instantaneous contact impedance of each electrode plate in the bottom electrode group can be obtained.

Alternatively, the electronic device may obtain the contact resistance of at least one electrode set, wherein the electrode set may be a bottom electrode set or a pressing electrode set. By way of example, taking the bottom electrode group as an example, the contact impedance of each electrode sheet in the bottom electrode group may be obtained, and the average value, the maximum value, the median, or the sum of the contact impedances of each electrode sheet in the bottom electrode group is determined as the contact impedance of the bottom electrode group.

Alternatively, the electronic device may acquire the contact impedance of one electrode. For example, the contact impedance of any one electrode in the wearable device may be obtained, or the contact impedance of a target electrode in the wearable device may be obtained by determining the target electrode. Wherein the electrode at the preset mounting position may be determined as the target electrode, for example, any one electrode pad in the bottom electrode group may be determined as the target electrode.

In some embodiments, the contact impedance of the wearable device may be acquired with reference to an existing contact impedance measurement method, which is not specifically limited in this application, for example, the contact impedance of at least one electrode in the wearable device may be acquired with reference to a contact impedance measurement circuit provided in CN115363556 a.

Step S120, determining a first contact impedance threshold, and determining a wearing state of the wearable device according to the first contact impedance threshold and the contact impedance.

The first contact impedance threshold is used for determining the wearing state of the wearing equipment. Alternatively, the first contact impedance threshold may be a value or an impedance range.

In some embodiments, the first contact impedance threshold may be preset, and the first contact impedance threshold may be obtained from a preset database. Optionally, considering that the temperature and the roughness of the skin of the user are different due to different temperatures in different seasons, if the same first contact impedance threshold is adopted, the wearing state of the wearing device may be inaccurately identified, so that the wearing device may acquire the season information of the current time, and acquire the first contact impedance threshold corresponding to the season information from a preset database based on the season information. It can be understood that the preset database includes a plurality of kinds of season information and a first contact impedance threshold value corresponding to each kind of season information.

Optionally, considering that different climates in different areas cause different temperatures and roughness of the skin of the user, if the same first contact impedance threshold is adopted, the wearing state of the wearing device may be inaccurately identified, so that the wearing device may acquire current position information, and acquire the first contact impedance threshold corresponding to the position information from a preset database based on the current position information. It can be understood that the preset database includes a plurality of types of position information and a first contact impedance threshold value corresponding to each type of position information.

Optionally, to further improve accuracy of wearing state identification of the wearable device, reliability of the collected physiological signals is ensured, the wearable device may obtain current location information, season information where the current time is located, and a current environmental temperature, and determine the first contact impedance threshold based on the current location information, the season information where the current time is located, and the current environmental temperature. For example, a preset database can be queried based on current position information, season information of the current time and current environment temperature to obtain first contact impedance thresholds, wherein the preset database comprises a plurality of first contact impedance thresholds, and a temperature range, a position range and season information corresponding to each first contact impedance threshold; for example, the current location information, the season information in which the current time is located, and the current environmental temperature may be input to a preset threshold prediction model to obtain the first contact impedance threshold, where the preset threshold prediction model may be a prediction model based on a neural network, a prediction model based on machine learning, or a mathematical model.

In some embodiments, considering that the body surface temperature and the skin degree are different among different users, if only environmental factors are considered, the wearing state of the wearing equipment may be inaccurately identified without considering individual differences, so that historical contact impedance data of the users in the historical time period can be obtained, and the historical contact impedance data is subjected to data processing to obtain the first contact impedance threshold.

The historical time period may be one week in the past, one month in the past, three months in the past, etc. The historical contact impedance data includes a contact impedance corresponding to each historical sampling time within the historical time period.

Optionally, abnormal values of the historical contact impedance data in the historical duration may be removed, and an average value, a mode value or a median value in the historical contact impedance data after the abnormal values are removed is determined as the first contact impedance threshold value.

Optionally, abnormal values of the historical contact impedance data in the historical time period can be removed, regression processing is performed on the historical contact impedance data with the abnormal values removed, a distribution interval where the historical contact impedance data with the abnormal values removed is located is obtained, and an impedance range corresponding to the distribution interval is determined to be a first contact impedance threshold value.

In some embodiments, the contact impedance may be compared with a first contact impedance threshold, if the contact impedance matches the first contact impedance threshold, the wearing state of the wearable device is determined to be tight, and if the contact impedance does not match the first contact impedance threshold, the wearing state of the wearable device is determined to be loose.

Optionally, when the first contact impedance threshold is a value, if the contact impedance is greater than the first contact impedance threshold, determining that the contact impedance is not matched with the first contact impedance threshold, and if the contact impedance is less than or equal to the first contact impedance threshold, determining that the contact impedance is matched with the first contact impedance threshold.

Optionally, when the first contact impedance threshold is an impedance range, the contact impedance is determined to be matched with the first contact impedance threshold when the contact impedance is within the impedance range corresponding to the first contact impedance threshold, and the contact impedance is determined to be not matched with the first contact impedance threshold when the contact impedance is not within the impedance range corresponding to the first contact impedance threshold.

In some embodiments, when the contact impedance is a contact impedance obtained based on one electrode, the first contact impedance threshold is compared to the contact impedance.

In some embodiments, when the contact impedance is obtained based on each electrode, the average, median, or maximum value of the contact impedance of each electrode may be taken as the contact impedance, and the first contact impedance threshold may be compared with the contact impedance; the contact impedance of each electrode may be compared with the first contact impedance threshold value to obtain wearing states of each electrode, the occurrence number of each wearing state is counted, and the wearing state with the highest occurrence number is determined as the wearing state of the wearing device.

In some embodiments, when the contact impedance is a contact impedance obtained based on the electrode groups, the average, median, or maximum value of the contact impedance of each electrode group may be taken as the contact impedance, and the first contact impedance threshold may be compared with the contact impedance; the contact impedance of each electrode group may be compared with the first contact impedance threshold to obtain wearing states of each electrode group, the occurrence number of each wearing state is counted, and the wearing state with the highest occurrence number is determined as the wearing state of the wearing device.

Step S130, based on the wearing state of the wearing equipment, physiological signals corresponding to the physiological signal measurement instruction are collected.

In some embodiments, when the wearing state of the wearing device is tight wearing, the physiological signal corresponding to the physiological signal measurement instruction is collected, when the wearing state of the wearing device is loose wearing, the prompting information is output to prompt the user to adjust the wearing state of the wearing device, and when the adjusted wearing state is detected to be tight wearing, the physiological signal corresponding to the physiological signal measurement instruction is collected.

In the physiological signal measurement method provided by the embodiment of the application, the wearing state of the wearing equipment is determined through the contact impedance and the first contact impedance threshold value, and when the physiological signal measurement is ensured through the wearing state identification, the back of the wearing equipment main body is ensured to be well contacted with the skin of the human body, so that a good measurement environment is provided, and the accuracy of a measurement result is ensured.

In consideration of individual differences and seasonal variations, the accuracy of the identified wearing state is reduced, feedback adjustment can be increased to ensure the accuracy of the finally acquired physiological signals, namely after the wearing state of the wearing device is detected, when the wearing state of the wearing device is loose, prompt information is output, the first contact impedance threshold value is updated based on feedback operation of a user, wearing state identification is performed again based on the updated first contact impedance threshold value, and therefore accurate identification of wearing state identification can be achieved through dynamic adjustment of the contact impedance threshold value under the conditions of individual differences and seasonal variations, and the accuracy of physiological signal acquisition is further ensured.

As shown in fig. 4, fig. 4 is a flowchart of a physiological signal measurement method based on feedback adjustment according to an embodiment of the present application, where the physiological signal measurement method based on feedback adjustment includes steps S410 to S440:

in step S410, in response to the physiological signal measurement instruction, a contact impedance of at least one electrode is obtained.

In some embodiments, the contact impedance of at least one electrode in the wearable device may be obtained with reference to step S110, which is not described herein in detail.

Step S420, determining a first contact impedance threshold, and determining a wearing state of the wearable device according to the first contact impedance threshold and the contact impedance.

In some embodiments, the wearing state of the wearable device may be determined with reference to step S120, which is not described herein in detail.

Step S430, when the wearing state of the wearing equipment is tight wearing, the physiological signals corresponding to the physiological signal measurement instruction are collected.

In some embodiments, the physiological signal corresponding to the physiological signal measurement instruction may be acquired according to the above step 130, which is not described herein in detail.

Step S440, when the wearing state of the wearing device is loose wearing, a prompt message is output to prompt the user to adjust the wearing state of the wearing device.

In some embodiments, after the prompt information is output, acquiring a feedback operation of a user based on the prompt information, determining a new first contact impedance threshold based on the feedback operation, acquiring a new contact impedance of the wearable device, determining a new wearing state of the wearable device based on the new first contact impedance threshold and the new contact impedance, repeating the steps until the new wearing state is a tight wearing state, and acquiring a physiological signal corresponding to the physiological signal measurement instruction.

Considering that after user changes, seasonal changes and environmental temperature and humidity changes, the contact impedance of the skin of the user can be changed, if the first contact impedance threshold is not updated timely, misjudgment of the wearing state of the wearing equipment can occur, accuracy of finally acquired physiological signals is reduced, and meanwhile use experience of the user is affected. Therefore, the first contact impedance threshold needs to be updated in time to reduce misjudgment of the wearing state of the wearing device, in some embodiments, when the wearing state of the wearing device is loose, prompt information is output, feedback operation of a user based on the prompt information is determined, whether the wearing state is loose is caused by untimely updating of the first contact impedance threshold is determined based on the feedback operation, and accordingly whether the first contact impedance threshold is updated is determined.

The feedback operation is used for determining whether the wearing state of the wearing equipment is adjusted by a user.

Optionally, the wearing device outputs the prompt information, determines the feedback operation of the user based on the prompt information through the gravity sensor of the wearing device, and determines whether the wearing state of the wearing device is adjusted by the user.

Optionally, the wearing device outputs prompt information, a selection control is set in the prompt information page view to adjust and cancel the wearing state, and a user feedback operation based on the prompt information is determined in response to a selection operation input by the user based on the selection control in the prompt information page view, wherein the selection operation comprises adjustment of the wearing state and no adjustment of the wearing state. It can be understood that when the user clicks the selection control "cancel", the selection operation is determined not to adjust the wearing state, the feedback operation is determined not to adjust the wearing state of the wearing device, and when the user clicks the selection control "adjust the wearing state", the selection operation is determined to adjust the wearing state, and the feedback operation is determined to adjust the wearing state of the wearing device.

Optionally, the wearable device outputs the prompt information, after waiting for a preset waiting time, the current contact impedance of the wearable device is collected, when the current contact impedance of the wearable device is consistent with the contact impedance of the wearable device, the feedback operation of the user based on the prompt information is determined to not adjust the wearing state of the wearable device, and when the current contact impedance of the wearable device is inconsistent with the contact impedance of the wearable device, the feedback operation of the user based on the prompt information is determined to adjust the wearing state of the wearable device.

In some embodiments, when the user adjusts the wearing state of the wearing device, indicating that the wearing state is detected as being too loose, and the skin is in poor contact with the wearing device, the first contact impedance threshold is not adjusted; when the wearing state of the wearing device is not adjusted by the user, it is indicated that the wearing state detection is loose and may be due to misjudgment of the wearing state caused by user change, temperature change and humidity change, and in order to improve the accuracy of the wearing state detection, the first contact impedance threshold needs to be updated.

Specifically, the method for determining whether the first contact resistance threshold is updated includes steps a1 to a3:

step a1, determining whether to update the first contact impedance threshold based on the feedback operation.

Optionally, based on the feedback operation, determining whether the user adjusts the wearing state of the wearable device, and if the user adjusts the wearing state of the wearable device, determining that the first contact impedance threshold is not updated; and if the wearing state of the wearing equipment is not adjusted by the user, determining to update the first contact impedance threshold value.

And a step a2 of determining an updated first contact impedance threshold value if the first contact impedance threshold value is updated, and determining the updated first contact impedance threshold value as a new first contact impedance threshold value.

In some embodiments, when the first contact impedance threshold needs to be updated, historical contact impedance data and acquired contact impedance may be processed, and the contact impedance threshold may be updated based on the processing result, so as to obtain an updated contact impedance threshold. As shown in fig. 5, fig. 5 is a flowchart of a method for updating a first contact impedance threshold according to an embodiment of the present application, where the method for updating a first contact impedance threshold includes steps S441 to S442:

step S441, historical contact impedance data of the wearable device is acquired.

Step S442, updating the first contact impedance threshold according to the historical contact impedance data and the contact impedance, to obtain an updated first contact impedance threshold.

In some embodiments, the historical contact impedance data may be updated according to the contact impedance, so as to obtain updated historical contact impedance data, and according to the determination manner of the first contact impedance threshold in the step S120, a new first contact impedance threshold is obtained, and the contact impedance threshold is updated based on the new first contact impedance threshold, so as to obtain an updated first contact impedance threshold.

In some embodiments, data processing may be performed according to the contact impedance and the historical contact impedance data, a contact impedance variation trend and a contact impedance variation amount of the wearable device are determined, and the first contact impedance threshold value is updated based on the contact impedance variation trend and the contact impedance variation amount, so as to obtain an updated first contact impedance threshold value. Wherein the contact resistance variation trend includes at least one of rising, falling, and unchanged.

Optionally, the historical contact impedance data may be updated according to the contact impedance, so as to obtain updated historical contact impedance data, and the updated historical contact impedance data is subjected to differential processing, so as to obtain contact impedance change data, and a contact impedance change trend is obtained according to the contact impedance change data. For example, if there are values continuously greater than 0 in the contact impedance change data, the contact impedance change trend is determined to be ascending, if there are values continuously less than 0 in the contact impedance change data, the contact impedance change trend is determined to be descending, and if the values in the contact impedance change data are all equal to 0, the contact impedance change trend is determined to be unchanged.

Optionally, the historical contact impedance data may be updated according to the contact impedance to obtain updated historical contact impedance data, the updated historical contact impedance data and the first contact impedance threshold value are subjected to differential processing to obtain contact impedance difference value data, and a median, a mode or a mean value of differences in the contact impedance difference value data is determined as the contact impedance variation.

In some embodiments, after the contact impedance variation and the contact impedance variation trend are determined, an impedance threshold adjustment mode is determined according to the contact impedance variation trend, and the contact impedance threshold is updated according to the contact impedance variation according to the impedance threshold adjustment mode, so as to obtain an updated contact impedance threshold. The impedance threshold adjustment mode comprises at least one of lowering an impedance threshold and lifting the impedance threshold.

And a step a3, if the first contact impedance threshold is not updated, determining the first contact impedance threshold as a new contact impedance threshold.

According to the physiological signal measuring method based on feedback adjustment, the new first contact impedance threshold value is obtained through the wearing state and the feedback operation, the new wearing state detection is carried out on the basis of the new first contact impedance threshold value, misjudgment of the wearing state is avoided through the feedback adjustment of the first contact impedance threshold value, accuracy of the wearing state detection is improved, and accordingly reliability of the collected physiological signals is guaranteed.

As shown in fig. 3, the back of the wearable device is provided with a bottom electrode, the side of the wearable device is provided with a pressing electrode, in physiological signal acquisition, for acquiring corresponding physiological signals through ECG (full name: electrochemical image, chinese: electrocardiography), BIA (full name: bioelectric Impedance Analysis, chinese: bioelectrical impedance measurement), the pressing force of the user on the side pressing electrode of the wearable device needs to be detected to determine corresponding heart rate and impedance signals, and when the pressing force of the user on the side pressing electrode of the wearable device is loose, the accuracy of the acquired heart rate and impedance signals may be reduced.

Based on this, in order to further improve accuracy of physiological signal measurement based on the physiological signal measurement method provided in fig. 2, after responding to the physiological signal measurement instruction, a physiological signal type corresponding to the physiological signal measurement instruction is determined, whether to identify the pressing force of the side pressing electrode of the wearing device is determined based on the physiological signal type, and when the pressing force of the side pressing electrode of the wearing device is determined to identify, physiological signals corresponding to the physiological signal measurement instruction are acquired based on the pressing force of the side pressing electrode of the wearing device and the wearing state of the wearing device. The physiological signal types comprise a first preset type and a second preset type, wherein the first preset type represents physiological signals which are required to be collected by a sensor arranged at the bottom of the wearable device, such as PPG, ECG, BIA, and the second preset type represents physiological signals which are required to be collected by a user pressing a side pressing electrode of the wearable device, such as ECG (ECG) and BIA (bipolar alike).

Specifically, as shown in fig. 6, fig. 6 is a flowchart of another physiological signal measurement method according to an embodiment of the present application, where the physiological signal measurement method includes steps S610 to S650:

In step S610, in response to the physiological signal measurement instruction, a contact impedance of at least one electrode is obtained.

In some embodiments, the contact impedance of at least one electrode in the wearable device may be obtained according to step S110, which is not described herein in detail in this embodiment.

Step S620, determining a first contact impedance threshold, and determining a wearing state of the wearable device according to the first contact impedance threshold and the contact impedance.

In some embodiments, the wearing state of the wearable device may be determined according to the step S120, which is not described herein in detail.

In step S630, the physiological signal type corresponding to the physiological signal measurement instruction is determined.

In some embodiments, the physiological signal type corresponding to the physiological signal measurement instruction may be determined according to instruction information carried in the physiological signal measurement instruction. The instruction information includes, but is not limited to, a physiological signal corresponding to the physiological signal measurement instruction, and an identifier corresponding to the physiological signal.

Optionally, the identification corresponding to the physiological signal may be determined based on the instruction information carried in the physiological signal measurement instruction, mapping data between the preset identification and the type may be queried, and the physiological signal type corresponding to the physiological signal measurement instruction may be determined. The mapping data between the preset identifications and types comprises identifications corresponding to various physiological signals and physiological signal types where the identifications corresponding to each physiological signal are located.

Step S640, if the physiological signal type is the first preset type, acquiring a physiological signal corresponding to the physiological signal measurement instruction based on the wearing state of the wearable device.

In some embodiments, the physiological signals corresponding to the physiological signal measurement instruction may be collected according to the step S130 based on the wearing state of the wearable device, which is not described herein.

In some embodiments, in the feedback adjustment-based physiological signal measurement method provided in fig. 4, step S430 or step S440 may be based on the wearing state of the wearable device, and the physiological signal corresponding to the physiological signal measurement instruction is collected, which is not described herein.

Step S650, if the physiological signal type is the second preset type, acquiring the pressing force type of the wearable device, and acquiring the physiological signal corresponding to the physiological signal measurement instruction based on the wearing state and the pressing force type of the wearable device.

Wherein the pressing force type comprises loose pressing and tight pressing.

In some embodiments, the contact impedance of the pressing electrode may be obtained, the contact impedance of the pressing electrode is compared with a second contact impedance threshold, if the contact impedance of the pressing electrode is greater than the second contact impedance threshold, the pressing force type of the wearable device is determined to be loose pressing, and if the contact impedance of the pressing electrode is less than or equal to the second contact impedance threshold, the pressing force type of the wearable device is determined to be tight pressing.

In some embodiments, according to the wearing state and the pressing force type of the wearing device, determining whether the device state of the wearing device meets a preset physiological signal acquisition condition, if the device state of the wearing device meets the preset physiological signal acquisition condition, acquiring a physiological signal corresponding to the physiological signal measurement instruction, and if the device state of the wearing device does not meet the preset physiological signal acquisition condition, outputting prompt information to prompt a user to adjust the device state of the wearing device, and when the adjusted device state is detected to meet the preset physiological signal acquisition condition, acquiring the physiological signal corresponding to the physiological signal measurement instruction.

The device state comprises the wearing state of the wearing device and the pressing force type.

Optionally, when the wearing state is tight wearing and the pressing force type is tight pressing, determining that the equipment state of the wearing equipment meets a preset physiological signal acquisition condition; optionally, when the wearing state is loose wearing and/or the pressing force type is loose pressing, when the prompting information is output, it is determined that the equipment state of the wearing equipment does not meet the preset physiological signal acquisition condition.

Optionally, when the device state of the wearable device does not meet the preset physiological signal acquisition condition, if the wearing state is loose, outputting prompt information, determining feedback operation of a user based on the prompt information, determining whether to update the first contact impedance threshold according to the method for determining whether to update the first contact impedance threshold, and when the first contact impedance threshold is updated, updating according to the method for updating the first contact impedance threshold provided in fig. 5, to obtain a new first contact impedance threshold, acquiring new contact impedance of an electrode in the wearable device, and determining a new wearing state of the wearable device based on the new first contact impedance threshold and the new contact impedance; if the pressing force type is loose pressing, outputting prompt information to prompt a user to adjust the pressing force of the pressing electrode, and collecting a new pressing force type; when the new pressing force type is tight pressing and the new wearing state is tight wearing, physiological signals corresponding to the physiological signal measurement instructions are collected.

In some embodiments, to further ensure accuracy of the collected physiological signal, when the pressing force type is loose pressing, a prompt message is output to prompt the user to adjust the pressing force of the pressing electrode, and based on a feedback operation of the user based on the prompt message, whether to update the second contact impedance threshold is determined; if the second contact impedance threshold is to be updated, the second contact impedance threshold is updated by referring to the updating method of the first contact impedance threshold provided in fig. 5, so as to obtain a new second contact impedance threshold, a new contact impedance of the pressing electrode is obtained, the new contact impedance of the pressing electrode is compared with the new second contact impedance threshold, so as to obtain a new pressing force type, and when the new pressing force type is a tight pressing, physiological signals corresponding to physiological signal measurement instructions are collected.

In one embodiment, if the second contact impedance threshold is not updated, a new contact impedance of the pressing electrode is obtained, the new contact impedance of the pressing electrode is compared with the second contact impedance threshold to obtain a new pressing force type, and when the new pressing force type is a tight pressing, a physiological signal corresponding to the physiological signal measurement instruction is acquired.

In one embodiment, whether to update the second contact impedance threshold may be determined according to the method of determining whether to update the first contact impedance threshold described above.

In some embodiments, the first contact impedance threshold and the second contact impedance threshold may be the same.

Alternatively, when the first contact impedance threshold value and the second contact impedance threshold value are both values, the values of the first contact impedance threshold value and the second contact impedance threshold value may be the same; optionally, when the first contact impedance threshold value and the second contact impedance threshold value are both values, the values corresponding to the first contact impedance threshold value and the second contact impedance threshold value may be in the same value range; optionally, when the first contact impedance threshold and the second contact impedance threshold are both impedance ranges, the first contact impedance threshold and the second contact impedance threshold have the same impedance range.

In some embodiments, the first contact impedance threshold and the second contact impedance threshold may be different.

Considering that in practical use, the area of the bottom electrode is generally set to be larger than the area of the pressing electrode, while the first contact impedance threshold is used for determining the wearing state of the wearing device based on the contact impedance measured by the bottom electrode of the wearing device, and the second contact impedance threshold is used for determining the pressing force of the wearing device based on the contact impedance measured by the pressing electrode of the wearing device, since the contact area of the bottom electrode and the human skin is larger than the contact area of the pressing electrode and the human skin, and the contact impedance is inversely proportional to the contact area, that is, the smaller the contact area of the electrode and the human skin is, the larger the corresponding contact impedance is, therefore, in order to ensure the accuracy of the identification of the wearing state and the pressing force type of the wearing device, in some embodiments, the second contact impedance threshold may be set to be larger than the first contact impedance threshold.

According to the physiological signal measuring method, the wearing tightness degree of the wearing equipment and the pressing force of the pressing electrode plate are judged through the contact impedance of the bottom electrode plate, whether the wearing equipment is well attached to a user or not is determined according to the wearing tightness degree and the pressing force, and when the wearing equipment is well attached to the user, physiological signals are collected, and the accuracy of the collected physiological signals is determined.

Considering that when a user is in a motion state, due to the fact that the bottom electrode of the wearing device slides in the motion process, the bottom electrode of the wearing device is in poor contact with the skin of the user, the situation that loose wearing is detected may exist, in this scenario, if prompt information is still output, the first contact impedance threshold value is dynamically adjusted based on feedback operation of the user, the measurement time of the physiological signal measurement method is increased, based on this, in some embodiments, the first contact impedance threshold value is determined, the wearing state of the wearing device is determined according to the first contact impedance threshold value and the contact impedance, the motion state of the user is obtained, whether the user is in motion is determined, if the user is determined to be in motion, physiological signals corresponding to the physiological signal measurement instruction are collected, and if the user is determined to be in a static state, physiological signals corresponding to the physiological signal measurement instruction are collected based on the wearing state of the wearing device, so that the measurement time of the physiological signal measurement method is ensured to be reduced in the motion state.

In the physiological signal measurement method provided by the embodiment of the application, in physiological signal measurement, the contact impedance of at least one electrode in the wearable device is obtained by responding to a physiological signal measurement instruction; determining a first contact impedance threshold, and determining the wearing state of the wearing equipment according to the first contact impedance threshold and the contact impedance; based on the wearing state of the wearing equipment, physiological signals corresponding to the physiological signal measurement instructions are collected, so that the back of the wearing equipment main body can be ensured to be well contacted with human skin, a good measurement environment is provided, and the accuracy of a measurement result is ensured.

In order to better implement the physiological signal measurement method provided in the present application, on the basis of the physiological signal measurement method, as shown in fig. 7, fig. 7 is a schematic structural diagram of a physiological signal measurement device provided in an embodiment of the present application, where the physiological signal measurement device includes an impedance measurement module 102, a state detection module 702, and a signal acquisition module 703.

Wherein, the impedance measurement module 102 is configured to obtain a contact impedance of at least one electrode in response to a physiological signal measurement instruction;

the state detection module 702 is configured to determine a first contact impedance threshold, and determine a wearing state of the wearable device according to the first contact impedance threshold and the contact impedance;

The signal acquisition module 703 is configured to acquire a physiological signal corresponding to the physiological signal measurement instruction based on a wearing state of the wearable device.

In some implementations, the status detection module 702 is configured to:

comparing the contact impedance with a first contact impedance threshold;

if the contact impedance is matched with the first contact impedance threshold value, determining that the wearing state of the wearing equipment is tight wearing;

and if the contact impedance is not matched with the first contact impedance threshold value, determining that the wearing state of the wearing equipment is loose.

In some embodiments, the signal acquisition module 703 is configured to:

when the wearing state of the wearing equipment is tight wearing, acquiring a physiological signal corresponding to the physiological signal measurement instruction;

when the wearing state of the wearing equipment is loose wearing, a prompt message is output to prompt a user to adjust the wearing state of the wearing equipment.

In some embodiments, the signal acquisition module 703 is configured to:

acquiring feedback operation of a user based on prompt information, determining a new first contact impedance threshold based on the feedback operation, acquiring new contact impedance of the wearable device, determining a new wearing state of the wearable device based on the new first contact impedance threshold and the new contact impedance, repeating the steps until the new wearing state is tight wearing, and acquiring physiological signals corresponding to physiological signal measurement instructions.

In some embodiments, the signal acquisition module 703 is configured to:

determining whether to update the first contact impedance threshold based on the feedback operation;

if the first contact impedance threshold is updated, determining an updated first contact impedance threshold, and determining the updated first contact impedance threshold as a new first contact impedance threshold;

if the first contact impedance threshold is not updated, the first contact impedance threshold is determined to be a new first contact impedance threshold.

In some embodiments, the signal acquisition module 703 is configured to:

acquiring historical contact impedance data of the wearable device;

and updating the first contact impedance threshold according to the historical contact impedance data and the contact impedance to obtain an updated first contact impedance threshold.

In some embodiments, the signal acquisition module 703 is configured to:

according to the historical contact impedance data and the contact impedance, determining the contact impedance change trend and the contact impedance change amount of the wearable equipment; the contact resistance variation trend includes at least one of rising, falling, and unchanged;

updating the first contact impedance threshold based on the contact impedance change trend and the contact impedance change amount to obtain an updated first contact impedance threshold.

In some embodiments, the signal acquisition module 703 is configured to:

based on the feedback operation, determining whether the wearing state of the wearing equipment is adjusted by the user;

if the wearing state of the wearing equipment is adjusted by the user, the first contact impedance threshold value is determined not to be updated;

and if the wearing state of the wearing equipment is not adjusted by the user, determining to update the first contact impedance threshold value.

In some embodiments, the signal acquisition module 703 is configured to:

determining the physiological signal type corresponding to the physiological signal measurement instruction;

if the physiological signal type is a first preset type, acquiring a physiological signal corresponding to a physiological signal measurement instruction based on the wearing state of the wearing equipment;

if the physiological signal type is the second preset type, acquiring the pressing force type of the wearing equipment, and acquiring a physiological signal corresponding to the physiological signal measurement instruction based on the wearing state and the pressing force type of the wearing equipment.

In some embodiments, the plurality of electrodes includes a pressing electrode disposed on the first surface of the wearable device; the first surface is the surface that wearing equipment is not laminated with user's skin, and signal acquisition module 703 is used for:

Acquiring contact impedance of the pressing electrode;

comparing the contact impedance of the pressing electrode with a second contact impedance threshold;

if the contact impedance of the pressing electrode is larger than the second contact impedance threshold value, determining that the pressing force type of the wearable equipment is loose pressing;

and if the contact impedance of the pressing electrode is smaller than or equal to the second contact impedance threshold value, determining that the pressing force type of the wearable equipment is tight pressing.

In some embodiments, the signal acquisition module 703 is configured to:

determining whether the equipment state of the wearing equipment meets preset physiological signal acquisition conditions according to the wearing state and the pressing force type of the wearing equipment; the equipment state comprises the wearing state of the wearing equipment and the pressing force type;

if the equipment state of the wearable equipment meets the preset physiological signal acquisition condition, acquiring a physiological signal corresponding to a physiological signal measurement instruction;

if the equipment state of the wearable equipment does not meet the preset physiological signal acquisition conditions, outputting prompt information to prompt a user to adjust the equipment state of the wearable equipment, and acquiring a physiological signal corresponding to the physiological signal measurement instruction when the adjusted equipment state is detected to meet the preset physiological signal acquisition conditions.

In some embodiments, the second contact impedance threshold is greater than the first contact impedance threshold.

In some embodiments, the plurality of electrodes further comprises a bottom electrode disposed on the second surface of the wearable device; the second surface is a surface of the wearing device attached to the skin of the user, and the impedance measurement module 102 is configured to:

a contact resistance of the at least one bottom electrode is obtained.

In physiological signal measurement, the wearing state of the wearing equipment is determined through the contact impedance and the first contact impedance threshold value, and when physiological signal measurement is ensured through wearing state identification, the back of the wearing equipment main body is ensured to be in good contact with human skin so as to provide a good measurement environment, and further the accuracy of a measurement result is ensured.

The embodiment of the application also provides electronic equipment, which comprises an equipment main body and a physiological signal measuring device arranged in the equipment main body. The electronic device may be, but is not limited to, an infrared electronic thermometer, a pulse oximeter, an intelligent wearable device, a mobile terminal, an intelligent home device. The intelligent wearable device comprises, but is not limited to, an intelligent watch, an intelligent bracelet and a cervical vertebra massager. Mobile terminals include, but are not limited to, smartphones, notebook computers, tablet computers, POS (point of sales terminal, point of sale terminal) machines. The intelligent household equipment comprises, but is not limited to, an intelligent socket, an intelligent electric cooker, an intelligent sweeper and an intelligent lamp. According to the electronic device, the contact impedance of at least one electrode in the wearing device is obtained in response to the physiological signal measurement instruction, the first contact impedance threshold is determined, the wearing state of the wearing device is determined according to the first contact impedance threshold and the contact impedance, and based on the wearing state of the wearing device, the technical means of acquiring the physiological signal corresponding to the physiological signal measurement instruction can solve the technical problem of inaccurate physiological signal measurement caused by low wearing state detection accuracy of the wearing device.

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 (15)

1. A physiological signal measurement method applying a wearable device provided with a plurality of electrodes, the method comprising:

acquiring contact impedance of at least one of the electrodes in response to a physiological signal measurement instruction;

determining a first contact impedance threshold, and determining the wearing state of the wearable device according to the first contact impedance threshold and the contact impedance;

based on the wearing state of the wearing equipment, physiological signals corresponding to the physiological signal measurement instructions are collected.

2. The method of claim 1, wherein the determining the wearing state of the wearable device according to the first contact impedance threshold and the contact impedance comprises:

comparing the contact impedance with the first contact impedance threshold;

if the contact impedance is matched with the first contact impedance threshold value, determining that the wearing state of the wearing equipment is tight wearing;

and if the contact impedance is not matched with the first contact impedance threshold value, determining that the wearing state of the wearing equipment is loose.

3. The method of claim 1, wherein the acquiring the physiological signal corresponding to the physiological signal measurement instruction based on the wearing state of the wearable device comprises:

when the wearing state of the wearing equipment is tight wearing, acquiring a physiological signal corresponding to the physiological signal measurement instruction;

when the wearing state of the wearing equipment is loose, outputting prompt information to prompt a user to adjust the wearing state of the wearing equipment.

4. The method of claim 3, wherein after outputting the prompt message when the wearing state of the wearable device is loose, the method further comprises:

Acquiring feedback operation of a user based on the prompt information, determining a new first contact impedance threshold based on the feedback operation, acquiring new contact impedance of the electrode, determining a new wearing state of the wearing equipment based on the new first contact impedance threshold and the new contact impedance, repeating the steps until the new wearing state is tightly worn, and acquiring a physiological signal corresponding to the physiological signal measurement instruction.

5. A method as claimed in claim 3, wherein said determining a new contact impedance based on said feedback operation comprises:

determining whether to update the first contact impedance threshold based on the feedback operation;

if the first contact impedance threshold value is updated, determining an updated first contact impedance threshold value, and determining the updated first contact impedance threshold value as a new first contact impedance threshold value;

and if the first contact impedance threshold is not updated, determining the first contact impedance threshold as a new first contact impedance threshold.

6. The method of claim 5, wherein the determining the updated first contact impedance threshold comprises:

Acquiring historical contact impedance data of the wearable device;

and updating the first contact impedance threshold according to the historical contact impedance data and the contact impedance to obtain an updated first contact impedance threshold.

7. The method of claim 6, wherein updating the first contact impedance threshold based on the historical contact impedance data and the contact impedance to obtain an updated first contact impedance threshold comprises:

according to the historical contact impedance data and the contact impedance, determining a contact impedance change trend and a contact impedance change amount of the wearable equipment; the contact resistance variation trend includes at least one of rising, falling and unchanged;

and updating the first contact impedance threshold based on the contact impedance change trend and the contact impedance change amount to obtain an updated first contact impedance threshold.

8. The method of claim 5, wherein the determining whether to update the first contact impedance threshold based on the feedback operation comprises:

based on the feedback operation, determining whether the user adjusts the wearing state of the wearable device;

If the wearing state of the wearing equipment is adjusted by the user, determining that the first contact impedance threshold is not updated;

and if the wearing state of the wearing equipment is not adjusted by the user, determining to update the first contact impedance threshold value.

9. The method of claim 1, wherein the acquiring the physiological signal corresponding to the physiological signal measurement instruction based on the wearing state of the wearable device comprises:

determining the physiological signal type corresponding to the physiological signal measurement instruction;

if the physiological signal type is a first preset type, acquiring a physiological signal corresponding to the physiological signal measurement instruction based on the wearing state of the wearing equipment;

if the physiological signal type is a second preset type, acquiring the pressing force type of the wearable device, and acquiring a physiological signal corresponding to the physiological signal measurement instruction based on the wearing state of the wearable device and the pressing force type.

10. The method of claim 9, wherein the plurality of electrodes comprises a pressing electrode disposed on the first surface of the wearable device; the first surface is a surface of the wearable device which is not attached to the skin of the user;

The obtaining the pressing force type of the wearable device includes:

acquiring contact impedance of the pressing electrode;

comparing the contact impedance of the pressing electrode with a second contact impedance threshold;

if the contact impedance of the pressing electrode is larger than the second contact impedance threshold, determining that the pressing force type of the wearable equipment is loose pressing;

and if the contact impedance of the pressing electrode is smaller than or equal to the second contact impedance threshold, determining that the pressing force type of the wearable equipment is tight pressing.

11. The method of claim 9, wherein the acquiring the physiological signal corresponding to the physiological signal measurement instruction based on the wearing state of the wearable device and the compression force type comprises:

determining whether the equipment state of the wearable equipment meets preset physiological signal acquisition conditions according to the wearing state of the wearable equipment and the pressing force type; the equipment state comprises the wearing state of the wearing equipment and the pressing force type;

if the equipment state of the wearable equipment meets the preset physiological signal acquisition condition, acquiring a physiological signal corresponding to the physiological signal measurement instruction;

If the equipment state of the wearable equipment does not meet the preset physiological signal acquisition conditions, outputting prompt information to prompt a user to adjust the equipment state of the wearable equipment, and acquiring physiological signals corresponding to the physiological signal measurement instructions when the adjusted equipment state is detected to meet the preset physiological signal acquisition conditions.

12. The method of claim 9, wherein the second contact impedance threshold is greater than the first contact impedance threshold.

13. The method of claim 1, wherein the plurality of electrodes further comprises a bottom electrode disposed on the second surface of the wearable device; the second surface is a surface of the wearing equipment, which is attached to the skin of the user;

the obtaining the contact impedance of at least one electrode comprises:

a contact impedance of at least one of the bottom electrodes is obtained.

14. A physiological signal measuring device, the device comprising:

the impedance measurement module is used for acquiring the contact impedance of at least one electrode in the wearable device;

the state detection module is used for determining a first contact impedance threshold value and determining the wearing state of the wearing equipment according to the first contact impedance threshold value and the contact impedance;

The signal acquisition module is used for acquiring the physiological signals corresponding to the physiological signal measurement instructions based on the wearing state of the wearing equipment.

15. An electronic device comprising the physiological signal measuring apparatus according to claim 14 or the physiological signal measuring method according to any one of claims 1 to 13.