WO2019148670A1

WO2019148670A1 - Power control method and system and wearable device

Info

Publication number: WO2019148670A1
Application number: PCT/CN2018/084105
Authority: WO
Inventors: 贺超; 宋雨; 胡少娴
Original assignee: 深圳创达云睿智能科技有限公司
Priority date: 2018-01-30
Filing date: 2018-04-23
Publication date: 2019-08-08
Also published as: CN110090024A

Abstract

Provided in the present application are a power control method and system and a wearable device, comprising: acquiring the current detection power set for a target item by a detection device; on the basis of the current detection power, collecting a sampling signal when the detection device detects the target item; on the basis of a preset rule, implementing quality evaluation of the sampling signal to obtain an evaluation value of the sampling signal at the current detection power; and, on the basis of the relationship between the evaluation value of the sampling signal and a standard evaluation value, adjusting the current detection power. In the present process, the detection device adjusts the current detection power on the basis of the relationship between the standard evaluation value and the evaluation value of the sampling signal acquired at the current detection power, and thereby enables the detection device to acquire a sampling signal that meets requirements at a relatively low power, ensuring the credibility of the detection results and saving resources.

Description

Power control method, system and wearable device

Technical field

The present application belongs to the field of intelligent control technologies, and in particular, to a power control method, system, and wearable device.

Background technique

Blood oxygen refers to oxygen in the blood, and the normal oxygen content of the human body is about 90%. The higher the oxygen content in the blood within a certain range, the better the human metabolism. Photo-Plethysmography (PPG) is usually used for blood oxygenation. PPG detection of blood oxygen requires smoother data on human fingers. Factors such as the skin condition of different people during the test and the ambient light of the person being tested may affect the results of the test. In order to obtain good detection results, it is necessary to set a large detection power (ie, a large sampling frequency) when detecting the user. However, due to differences in skin quality and detection environment, good detection results can be obtained at low power when testing some users. If the unified power set to the detector is used at this time (the default detection power is generally large) to detect such a user, some power consumption will undoubtedly be wasted.

technical problem

In view of this, the embodiment of the present application provides a power control method, system, and wearable device, so as to solve the problem that the detector cannot automatically adjust the detection power according to the specific detection condition in the prior art, and obtain the required detection result with minimum power consumption. The problem.

Technical solution

A first aspect of the embodiments of the present application provides a power control method, where the power control method includes:

Obtaining a current detection power set by the detecting device for the target item;

Collecting, according to the current detection power, a sampling signal when the detecting device detects the target item;

Performing quality assessment on the sampling signal according to a preset rule to obtain an evaluation value of the current detection power downsampled signal;

Obtaining a standard evaluation value corresponding to the sampling signal of the target item;

The current detected power is adjusted according to a relationship between an evaluation value of the sampling signal and the standard evaluation value.

A second aspect of the embodiments of the present application provides a power control system, where the power control system includes:

An acquiring unit, configured to acquire a current detection power set by the detecting device for the target item; and configured to acquire a standard evaluation value corresponding to the sampling signal of the target item;

a collecting unit, configured to collect, according to the current detection power, a sampling signal when the detecting device detects the target item;

An evaluation unit, configured to perform quality assessment on the sampling signal according to a preset rule, to obtain an evaluation value of the current detection power downsampled signal;

And an adjusting unit, configured to adjust the current detection power according to the relationship between the evaluation value of the sampling signal and the standard evaluation value.

A third aspect of an embodiment of the present application provides a wearable device including a memory, a processor, and a computer program stored in the memory and operable on the processor, the processor executing the computer program The steps of the method of any of the power control methods are implemented.

A fourth aspect of the embodiments of the present application provides a computer readable storage medium storing a computer program, the computer program being executed by a processor to implement any one of the power control methods The steps of the method.

Beneficial effect

In the embodiment provided by the present application, when detecting the blood oxygen or other target items of the human body, the detecting device first acquires the current detection power set by the detecting device for the target item to be detected; and obtains the current detection power. Sampling the signal, performing quality assessment on the sampling signal according to a preset rule, obtaining an evaluation value of the sampling signal, and then obtaining a standard evaluation value corresponding to the sampling signal of the target item, and adjusting the current detection power to an appropriate one according to the difference between the two. power. In this process, the detecting device adjusts the current detection power according to the relationship between the evaluation value of the sampling signal acquired under the current detection power and the standard evaluation value, thereby ensuring that the detecting device can acquire the power with less power. Satisfying the required sampling signal not only ensures the reliability of the test results but also saves resources.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only the present application. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.

1 is a schematic flow chart of a power control method according to Embodiment 1 of the present application;

2 is a schematic flowchart of a power control method according to Embodiment 2 of the present application;

3 is a schematic diagram of a power control system according to Embodiment 3 of the present application;

4 is a schematic diagram of a wearable device provided in Embodiment 4 of the present application.

Embodiments of the invention

In the following description, for purposes of illustration and description However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the application.

In the embodiment provided by the present application, when detecting the blood oxygen or other target items of the human body, the detecting device first acquires the current detection power set by the detecting device for the target item to be detected; and obtains the current detection power. Sampling the signal, performing quality assessment on the sampling signal according to a preset rule, obtaining an evaluation value of the sampling signal, and then obtaining a standard evaluation value corresponding to the sampling signal of the target item, and adjusting the current detection power to an appropriate one according to the difference between the two. power.

In order to explain the technical solutions described in the present application, the following description will be made by way of specific embodiments.

Example 1

FIG. 1 is a schematic flowchart diagram of a power control method provided in an embodiment of the present application, which is described in detail as follows:

Step S11, acquiring current detection power set by the detecting device for the target item;

In the embodiment provided by the present application, when the detecting device performs PPG oximetry on the human body, firstly, the current detection power set by the detecting device for the target item is acquired. Wherein the detection power is less than the rated power. Optionally, the target item may include a plurality of detection indicators, such as blood oxygen, blood pressure, and the like.

Optionally, when acquiring the current detection power set by the detection device for the target item, detecting a sleep period currently in which the user is located (eg, the user is in an awake period or a deep sleep period, etc.), determining the sleep period of the user. After that, the current detection power set by the detecting device for the sleep period is acquired. If the detection device does not set the current detection power, the current detection power may be preset according to the operating environment of the inspection device and the actual situation of the detected user.

Step S12, collecting, according to the current detection power, a sampling signal when the detecting device detects the target item;

In this step, the detecting device starts to perform the detecting task with the acquired current detecting power, and acquires a sampling signal when detecting the target item, for example, acquiring a sampling signal when the detecting device detects the user's blood oxygen. Optionally, when acquiring the sampling signal, a sampling signal of a preset duration may be acquired each time, for example, sampling signals of 5 seconds or 10 seconds or other durations are collected each time. The sampling signal includes related data such as a reflected light intensity signal received by a photoelectric sensor of the PPG. The PPG illumination interval is the pulse width. The length of the pulse width has an influence on the power. The longer the pulse width length, the larger the power consumption, and the proper adjustment of the pulse width can ensure the quality of the signal. But the longer the illumination time, the greater the power.

Step S13, performing quality assessment on the sampling signal according to a preset rule, to obtain an evaluation value of the current detection power downsampling signal;

In the embodiment provided by the present application, the obtained sampling signal is subjected to quality evaluation according to a preset rule to determine whether the current detection power can meet the detection requirement.

Specifically, when the quality of the sampled signal is evaluated, the characteristic value of the parameter related to the sampled signal may be obtained, for example, the reflected light intensity signal received by the photoelectric sensor of the PPG, and the characteristic value may be a peak value, a waveform offset, and a light source. Correlation coefficient, etc. The feature value is evaluated to determine whether it reaches the corresponding minimum detection value set by the user. If it is reached, it is determined that the characteristic value of the sampling signal item is qualified, and then the qualified characteristic value and the unqualified characteristic value are counted, and the sampling signal is calculated. Evaluation value.

Step S14, acquiring a standard evaluation value corresponding to the sampling signal of the target item;

In the embodiment provided by the present application, the detecting device acquires a standard evaluation value of the sampling signal set by the user when detecting each target item.

Optionally, in another embodiment provided by the present application, before the acquiring the standard evaluation value corresponding to the sampling signal of the target item, the method includes:

The sampling signal quality evaluation result of the target device of the preset number of users under the rated power is counted, and the standard evaluation value is set and stored according to the quality evaluation result.

Specifically, a preset number of users are detected before the standard evaluation value is set. The size of each feature value when the sampled signal obtained meets the detection requirement during the process of statistically detecting each user's target item. The eligibility criteria required to sample the signal are determined based on statistical results.

Step S15, adjusting the current detection power according to the relationship between the evaluation value and the standard evaluation value.

In this step, the current detection power is adjusted according to the relationship between the evaluation value of the current sampling signal and the standard evaluation value. Specifically, when the evaluation value is greater than the standard evaluation value, the current detection power is decreased. Further, after analyzing and adjusting the detection power, the relationship between the obtained evaluation value of the acquired signal and the standard evaluation value is such that the difference between the evaluation value of the sampled signal obtained under the adjusted detection power and the standard evaluation value is at the first preset value. Between the second preset value and the second preset value. The first preset value may be 0, the second preset value is greater than 0, and the smaller number (if the evaluation value is expressed as a percentage, the second preset value may be 5%, or smaller) The specific value can be set by the user according to the condition of the inspection device and the detected user's own situation. If the evaluation value is less than the standard evaluation value, the current detection power is increased to a suitable power value.

Optionally, if the difference between the currently detected evaluation value and the standard evaluation value is between the first preset value and the second preset value, no power adjustment is performed; and the current detection power is used for the user. After a period of detection (eg, 1 minute, 5 minutes, or other length of time), the evaluation value is again compared to the standard evaluation value to determine whether power adjustment is made.

Example 2

2 is a schematic flow chart of a power control method according to another embodiment of the present application, which is described in detail as follows:

Step S21: Acquire a current detection power set by the detection device for the target item, and collect, according to the current detection power, a sampling signal when the detection device detects the target item;

For the implementation process of the step, refer to the implementation process of step S11 and step S12 in the first embodiment, and details are not described herein again.

Step S22, acquiring feature values of at least two of the sampled signals; determining a score value of the feature value according to a relationship between each feature value of the sampled signal and a corresponding preset value; The relationship between the score value and the preset score determines the evaluation value of the sampled signal.

In this step, acquiring characteristic values of at least two items of the sampling signal, for example, for a reflected light intensity signal received by the photoelectric sensor of the PPG, acquiring a waveform pattern during sampling of the reflected light intensity signal, and then acquiring a waveform skewness of the waveform image. (skewness), kurtosis, and perfusion. The skewness is used to measure the degree of skew of the data; the peak kurtosis is used to measure the sharpness of the peak of the data; the blood perfusion value is used to describe the intensity of the detected blood signal.

The feature value is calculated according to the following formula:

Skewness=sum((I-mean(I)/std(I))^3)

Kurtosis=sum((I-mean(I)/std(I))^4)

Perfusion=mean(I_max-I_min)/mean(I)

Where: I is the intensity of the illumination, Mean (I) is the mean of the intensity of the reflected light, and Std (I) is the variance of the intensity of the reflected light.

Or use the following formula to calculate the above parameters:

Calculating a score value of each feature value according to the weight of each parameter (the weight can be set by the user, or mathematically obtaining an optimal segmentation plane vector capable of segmenting signals of different quality, that is, as a weight): The above formula calculates the score value of each parameter characteristic value, and judges whether each score value reaches its preset score. If it is reached, it determines that it is qualified, and then determines the evaluation value of the current sampling signal.

For example, the score of the characteristic value of the waveform skewness is calculated as T1, and the preset score is T2. If T1>T2, the feature value is judged to be qualified, and the current qualified feature value and the number of unqualified feature values are calculated according to the final qualified feature value and the number of the unqualified feature value. The estimated value of the sampled signal.

Step S23, acquiring a standard evaluation value corresponding to the sampling signal of the target item;

For the implementation process of this step, refer to step S14 in the first embodiment.

Step S24: If the evaluation value is greater than the standard evaluation value, the current detection power is gradually decreased according to a preset gradient until the difference between the evaluation value and the standard evaluation value is within a preset range.

In this step, if the estimated value of each characteristic value of the calculated sampling signal is greater than the standard evaluation value, the current detection power is gradually decreased according to the adjustment gradient set by the user until the evaluation value of the sampling signal and the standard evaluation value are The difference is within the preset range.

Step S25: If the evaluation value is not greater than the standard evaluation value, the current detection power is gradually increased according to a preset gradient until the difference between the evaluation value and the standard evaluation value is within a preset range.

In this step, if the estimated value of each characteristic value of the calculated sampling signal is smaller than the standard evaluation value, the current detection power is gradually increased according to the adjustment gradient set by the user until the evaluation value of the sampling signal and the standard evaluation value are The difference is within the preset range.

In the embodiment provided by the present application, the score of the feature value of the current sampled signal is calculated according to the weight of each feature value of the sampled signal, and then the score of the feature value is determined according to the preset value of the feature value. Thereby, the evaluation value of the current sampling signal is determined. When the evaluation value is greater than the standard evaluation value, the current detection power is gradually decreased; otherwise, the detection power is increased step by step, so that the difference between the evaluation value of the sampling signal and the standard evaluation value is within a preset range. It ensures that the detection device can collect the test results that meet the requirements with less power consumption.

Example 3

Referring to FIG. 3, the power control system includes: an acquisition unit 31, an acquisition unit 32, an evaluation unit 33, and an adjustment unit 34, wherein:

The obtaining unit 31 is configured to acquire a current detection power set by the detection device for the target item, and is further configured to acquire a standard evaluation value corresponding to the sampling signal of the target item;

The collecting unit 32 is configured to collect, according to the current detection power, a sampling signal when the detecting device detects the target item;

An evaluation unit 33, configured to perform quality assessment on the sampling signal according to a preset rule, to obtain an evaluation value of the current detection power downsampled signal;

The adjusting unit 34 is configured to adjust the current detection power according to the relationship between the evaluation value of the sampling signal and the standard evaluation value.

Further, the evaluation unit 33 includes:

An eigenvalue obtaining module, configured to acquire feature values of at least two of the sampling signals;

a score value determining module, configured to determine a score value of the feature value according to a relationship between each feature value of the sampled signal and a corresponding preset value;

The evaluation value determining module is configured to determine an evaluation value of the sampling signal according to a relationship between a score value of each feature value and a preset score.

Further, the adjustment sheet 34 includes:

a power reduction module, configured to gradually decrease the current detection power according to a preset gradient until an evaluation value of the sampling signal is greater than the standard evaluation value, until an evaluation value of the sampling signal and the standard evaluation value The difference is within the preset range.

Further, the adjustment sheet 34 further includes:

a power increasing module, configured to gradually increase the current detection power according to a preset gradient when an evaluation value of the sampling signal is not greater than the standard evaluation value, until an evaluation value of the sampling signal and the standard The difference between the evaluation values is within the preset range.

Further, the power control system further includes:

And a statistical unit, configured to calculate a sampling signal quality evaluation result of the detection device for the target item of the preset number of users under the rated power, and set and store the standard evaluation value according to the quality evaluation result.

It should be understood that the size of the sequence of the steps in the above embodiments does not mean that the order of execution is performed. The order of execution of each process should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present application.

Example 4

4 is a schematic diagram of a wearable device provided by an embodiment of the present application. As shown in FIG. 4, the wearable device 4 of this embodiment includes a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and operable on the processor 40. When the processor 40 executes the computer program 42, the steps in the above embodiments of the respective power control methods are implemented, such as steps S11 to S15 shown in FIG. Alternatively, when the processor 40 executes the computer program 42, the functions of the modules/units in the above various device embodiments are implemented, such as the functions of the modules 31 to 34 shown in FIG.

Illustratively, the computer program 42 can be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to complete This application. The one or more modules/units may be a series of computer program instruction segments capable of performing a particular function, the instruction segments being used to describe the execution of the computer program 42 in the wearable device 4. For example, the computer program 42 can be divided into: an acquisition unit, an acquisition unit, an evaluation unit, and an adjustment unit, wherein:

Further, the evaluation unit includes:

Further, the adjustment unit includes:

Further, the adjusting unit further includes:

Further, the power control system further includes:

The wearable device may include, but is not limited to, a processor 40, a memory 41. It will be understood by those skilled in the art that FIG. 4 is merely an example of the wearing device 4, does not constitute a limitation of the wearing device 4, may include more or less components than those illustrated, or combine some components, or different components. For example, the wearable device may further include an input/output device, a network access device, a bus, and the like.

The processor 40 may be a central processing unit (CPU), or may be other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 41 may be an internal storage unit of the wearable device 4, such as a hard disk or a memory of the wearable device 4. The memory 41 may also be an external storage device of the wearable device 4, such as a plug-in hard disk equipped on the wearable device 4, a smart memory card (SMC), and a secure digital (SD). Card, flash card, etc. Further, the memory 41 may also include both an internal storage unit of the wearable device 4 and an external storage device. The memory 41 is used to store the computer program and other programs and data required by the wearable device. The memory 41 can also be used to temporarily store data that has been output or is about to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the division of each functional unit and module described above is exemplified. In practical applications, the above functions may be assigned to different functional units as needed. The module is completed by dividing the internal structure of the device into different functional units or modules to perform all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit, and the integrated unit may be hardware. Formal implementation can also be implemented in the form of software functional units. In addition, the specific names of the respective functional units and modules are only for the purpose of facilitating mutual differentiation, and are not intended to limit the scope of protection of the present application. For the specific working process of the unit and the module in the foregoing system, reference may be made to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed or described in a certain embodiment can be referred to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

In the embodiments provided by the present application, it should be understood that the disclosed device/dressing device and method may be implemented in other manners. For example, the device/dressing device embodiment described above is merely illustrative. For example, the division of the module or unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units. Or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the present application implements all or part of the processes in the foregoing embodiments, and may also be completed by a computer program to instruct related hardware. The computer program may be stored in a computer readable storage medium. The steps of the various method embodiments described above may be implemented when the program is executed by the processor. . Wherein, the computer program comprises computer program code, which may be in the form of source code, object code form, executable file or some intermediate form. The computer readable medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM). , random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunications signals, and software distribution media. It should be noted that the content contained in the computer readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in a jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, computer readable media It does not include electrical carrier signals and telecommunication signals.

The above-mentioned embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still implement the foregoing embodiments. The technical solutions described in the examples are modified or equivalently replaced with some of the technical features; and the modifications or substitutions do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in Within the scope of protection of this application.

Claims

A power control method, characterized in that the power control method includes:

Obtaining a current detection power set by the detecting device for the target item;

And sampling, according to the current detection power, a sampling signal when the detecting device detects the target item;

Performing quality assessment on the sampling signal according to a preset rule to obtain an evaluation value of the current detection power downsampled signal;

Obtaining a standard evaluation value corresponding to the sampling signal of the target item;

The current detected power is adjusted according to a relationship between an evaluation value of the sampling signal and the standard evaluation value.
The power control method according to claim 1, wherein the quality evaluation of the sampling signal according to a preset rule is performed to obtain an evaluation value of the current detection power downsampling signal, including:

Obtaining characteristic values of at least two of the sampling signals;

Determining a score value of the feature value according to a relationship between each feature value of the sampled signal and a corresponding preset value;

The evaluation value of the sampling signal is determined according to the relationship between the score value of each feature value and the preset score.
The power control method according to claim 1, wherein the adjusting the current detection power according to the relationship between the evaluation value of the sampling signal and the standard evaluation value comprises:

If the evaluation value of the sampling signal is greater than the standard evaluation value, the current detection power is gradually decreased according to a preset gradient until the difference between the evaluation value and the standard evaluation value is within a preset range.
The power control method according to claim 1, wherein the adjusting the current detection power according to the relationship between the evaluation value of the sampling signal and the standard evaluation value further includes:

If the evaluation value of the sampling signal is not greater than the standard evaluation value, the current detection power is stepwisely increased according to a preset gradient until the difference between the evaluation value of the sampling signal and the standard evaluation value is preset Within the scope.
The power control method according to claim 1 or 3, wherein before the obtaining the standard evaluation value corresponding to the sampling signal of the target item, the method comprises:

The sampling signal quality evaluation result of the target device of the preset number of users under the rated power is counted, and the standard evaluation value is set and stored according to the quality evaluation result.
A power control system, characterized in that the power control system comprises:

An acquiring unit, configured to acquire a current detection power set by the detecting device for the target item; and configured to acquire a standard evaluation value corresponding to the sampling signal of the target item;

a collecting unit, configured to collect, according to the current detection power, a sampling signal when the detecting device detects the target item;

An evaluation unit, configured to perform quality assessment on the sampling signal according to a preset rule, to obtain an evaluation value of the current detection power downsampled signal;

And an adjusting unit, configured to adjust the current detection power according to the relationship between the evaluation value of the sampling signal and the standard evaluation value.
The power control system according to claim 6, wherein the evaluation unit comprises:

An eigenvalue obtaining module, configured to acquire feature values of at least two of the sampling signals;

a score value determining module, configured to determine a score value of the feature value according to a relationship between each feature value of the sampled signal and a corresponding preset value;

The evaluation value determining module is configured to determine an evaluation value of the sampling signal according to a relationship between a score value of each feature value and a preset score.
The power control system according to claim 6, wherein the adjustment unit comprises:

a power reduction module, configured to gradually decrease the current detection power according to a preset gradient until an evaluation value of the sampling signal is greater than the standard evaluation value, until an evaluation value of the sampling signal and the standard evaluation value The difference is within the preset range.
The power control system according to claim 6, wherein the adjustment sheet further comprises:

a power increasing module, configured to gradually increase the current detection power according to a preset gradient when an evaluation value of the sampling signal is not greater than the standard evaluation value, until an evaluation value of the sampling signal and the standard The difference between the evaluation values is within the preset range.
The power control system of claim 6 wherein said power control system further comprises:

And a statistical unit, configured to calculate a sampling signal quality evaluation result of the detection device for the target item of the preset number of users under the rated power, and set and store the standard evaluation value according to the quality evaluation result.
A wearable device comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program as claimed in claim 1 5 The steps of any of the methods described.
A computer readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method of any one of claims 1 to 5.