CN113759439A - Wearable device, wearing detection method, wearing detection device and storage medium - Google Patents
Wearable device, wearing detection method, wearing detection device and storage medium Download PDFInfo
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Abstract
The invention relates to wearable equipment, a wearing detection method, a wearing detection device and a storage medium, wherein the wearable equipment comprises a shell, a first polar plate, a second polar plate and a detection processing module, the first polar plate is arranged at a first wearing part of the shell, the second polar plate is arranged at a second wearing part of the shell and is arranged at a distance from the first polar plate, when the wearable equipment is in a wearing state, the distances between the first wearing part and the second wearing part and a wearer are simultaneously smaller than a distance threshold value, the detection processing module is respectively connected with the first polar plate and the second polar plate and is used for detecting a first mutual capacitance value between the first polar plate and the second polar plate, as the first polar plate and the second polar plate are respectively arranged at different wearing parts and are arranged at intervals, the two polar plates can be covered only in the wearing state, and the mutual capacitance between the two polar plates is related to the condition of the covered polar plates, therefore, the detection processing module detects the first mutual capacitance value between the first polar plate and the second polar plate, it may be determined whether the wearable device is in a worn state.
Description
Technical Field
The invention relates to the technical field of human body proximity sensing, in particular to wearable equipment, a wearing detection method, a wearing detection device and a storage medium.
Background
In some wearable devices, for example, headphones, glasses, etc., proximity detection is often provided to identify whether the device is in a worn state. The traditional approach detection adopts a detection electrode, the detection electrode has a self-capacitance to the ground, when the human body approaches, because the human body is used as a good conductor, the interference can be generated on the electrostatic field between the detection electrode and the ground end, so that the size of the self-capacitance is specially changed, when the self-capacitance is detected to meet the specific change, the wearable equipment is considered to be in a wearing state, otherwise, the wearable equipment is in a non-wearing state.
However, the specific change of the self-capacitance may be caused by the wearable device being placed on the hand of the wearer or on a grounding conductor (e.g., a metal object connected to the ground), so that the wearing state is easily determined to be misjudged according to the specific change of the self-capacitance.
Disclosure of Invention
In view of the above, it is desirable to provide a wearable device, a wearing detection method, an apparatus, and a storage medium capable of accurately determining a wearing state.
A wearable device, comprising:
a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
a first electrode plate provided at a first wearing portion of the case;
a second polar plate arranged at a second wearing part of the shell and spaced from the first polar plate, wherein when the wearable device is in a wearing state, the distances between the first wearing part and the second wearing part and a wearer are simultaneously smaller than a distance threshold;
and the detection processing module is respectively connected with the first polar plate and the second polar plate, and is used for detecting a first mutual capacitance value between the first polar plate and the second polar plate and judging the wearing state of the wearable equipment according to the first mutual capacitance value.
In one embodiment, the detection processing module is further configured to:
acquiring the variation trend of the first mutual capacitance value in a first preset time length;
and if the variation trend in the first preset time length is an attenuation trend and the attenuation rate in the first preset time length is greater than a preset attenuation rate, determining that the wearable equipment is in a wearing state.
In one embodiment, the detection processing module is further configured to:
acquiring the variation trend of the first mutual capacitance value in a second preset time length;
and if the variation trend in the second preset time length is an attenuation trend, the attenuation rate in the second preset time length is smaller than a preset attenuation rate, or the variation trend in the second preset time length is a growth trend, determining that the wearable device is in a non-wearing state.
In one embodiment, if the trend of change within the second preset time period is a growing trend, the detection processing module is further configured to:
calculating the growth rate of the first mutual capacitance value in a third preset time length;
and if the growth rate in the third preset time period is greater than a first preset growth rate, determining that the first wearing part and/or the second wearing part is/are covered with a conductive covering.
In one embodiment, the first predetermined growth rate is greater than 10% and less than 200%.
In one embodiment, after determining that the wearable device is in a wearing state, the detection processing module is further configured to:
detecting a second mutual capacitance value between the first polar plate and the second polar plate;
acquiring the variation trend of the second mutual capacitance value within a fourth preset time length;
and if the variation trend in the fourth preset time length is a growth trend and the growth rate in the fourth preset time length is greater than a second preset growth rate, determining that the wearable device is in a non-wearing state.
In one embodiment, if it is determined that the wearable device is in a non-wearing state, the detection processing module is further configured to:
comparing the growth rate of the second mutual capacitance value in a fourth preset time length with a third preset growth rate;
if the growth rate within a fourth preset time period is greater than the third preset growth rate, it is determined that the first wearing portion and/or the second wearing portion is covered with a conductive cover, wherein the third preset growth rate is greater than the second preset growth rate.
In one embodiment, the wearable device further comprises:
a temperature sensing module for sensing an ambient temperature inside the wearable device;
a humidity sensing module for sensing an ambient humidity inside the wearable device;
the detection processing module is respectively connected with the temperature sensing module and the humidity sensing module and is used for correcting the first mutual capacitance value and/or the second mutual capacitance value according to the environment temperature and the environment humidity.
In one embodiment, the detection processing module is further configured to:
judging whether the first mutual capacitance value is in a change state within a fifth preset time length;
if the first mutual capacitance value is in a change state, acquiring a first change rate of the first mutual capacitance value within a fifth preset time length;
and if the first change rate is smaller than a first change threshold value, correcting the first mutual capacitance value.
In one embodiment, the detection processing module is further configured to:
judging whether the second mutual capacitance value is in a change state within a sixth preset time length;
if the second mutual capacitance value is in a changing state, acquiring a second changing rate of the second mutual capacitance value within a sixth preset time length;
and if the second change rate is smaller than a second change threshold value, correcting the second mutual capacitance value.
In one embodiment, the wearable device is a headset or glasses.
In one embodiment, the first plate and the second plate are disposed on the same plane, or a projection of the first plate on the second plate at least partially overlaps the second plate.
A wearing detection method is applied to a wearable device, the wearable device comprises a shell, a first polar plate and a second polar plate, the first polar plate is arranged at a first wearing part of the shell, the second polar plate is arranged at a second wearing part of the shell and is arranged at a distance from the first polar plate, when the wearable device is in a wearing state, the distances between the first wearing part and the second wearing part and a wearer are simultaneously smaller than a distance threshold value, and the wearing detection method comprises the following steps:
acquiring a first mutual capacitance value between the first polar plate and the second polar plate;
acquiring the variation trend of the first mutual capacitance value in a first preset time length;
and if the variation trend in the first preset time length is an attenuation trend and the attenuation rate in the first preset time length is greater than a preset attenuation rate, determining that the wearable equipment is in a wearing state.
A wearing detection device is applied to wearable equipment, the wearable equipment comprises a shell, a first polar plate and a second polar plate, the first polar plate is arranged at a first wearing part of the shell, the second polar plate is arranged at a second wearing part of the shell and is arranged at a distance from the first polar plate, when the wearable equipment is in a wearing state, the distances between the first wearing part and the wearer and the distances between the second wearing part and the wearer are smaller than a distance threshold value simultaneously;
the wear detection device includes:
the mutual capacitance value acquisition module is used for acquiring a first mutual capacitance value between the first polar plate and the second polar plate;
the variation trend determining module is used for determining the variation trend of the first mutual capacitance value in a first preset time length;
and the wearing state judging module is used for judging that the wearable equipment is in a wearing state if the variation trend in the first preset time is an attenuation trend and the attenuation rate in the first preset time is greater than a preset attenuation rate.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned wear detection method.
The wearable device comprises a shell, a first polar plate, a second polar plate and a detection processing module, wherein the first polar plate is arranged at a first wearing part of the shell, the second polar plate is arranged at a second wearing part of the shell and is arranged at a distance from the first polar plate, when the wearable device is in a wearing state, the distances between the first wearing part and the second wearing part and a wearer are simultaneously smaller than a distance threshold value, the detection processing module is respectively connected with the first polar plate and the second polar plate and is used for detecting a first mutual capacitance value between the first polar plate and the second polar plate, as the first polar plate and the second polar plate are respectively arranged at different wearing parts and are arranged at intervals, the two polar plates can be covered only in the wearing state, and the mutual capacitance between the two polar plates is related to the condition that the two polar plates are covered, the detection processing module detects the first mutual capacitance value between the first polar plate and the second polar plate, whether the wearable equipment is in a wearing state can be accurately judged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an electric field distribution of a pole plate in a wearable device without a target object approaching according to an embodiment;
fig. 2 is a schematic diagram illustrating an electric field distribution of a polar plate in the wearable device in a wearing state according to an embodiment;
fig. 3 is a schematic diagram illustrating the distribution positions of the first plate and the second plate in the earphone according to an embodiment;
fig. 4 is a schematic diagram illustrating the distribution positions of the first pole plate and the second pole plate in the frame according to an embodiment;
FIG. 5 is a schematic diagram illustrating the relative positions of the first plate and the second plate according to an embodiment;
FIG. 6 is a schematic diagram illustrating the relative positions of the first plate and the second plate according to another embodiment;
fig. 7 is a flowchart of a wear detection method according to an embodiment.
Element number description:
a first polar plate: 101, a first electrode and a second electrode; a second pole plate: 102, and (b); a detection processing module: 103; sound outlet hole: 104; a housing: 100, respectively; the wearer: 200
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first plate may be referred to as a second plate, and similarly, a second plate may be referred to as a first plate, without departing from the scope of the present application. The first and second plates are both plates, but they are not the same plate.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
Fig. 1 is a block diagram of a wearable device according to an embodiment, the wearable device includes a housing 100, a first pole plate 101, a second pole plate 102, and a detection processing module 103, the first pole plate 101 is disposed in a first wearing portion of the housing 100, the second pole plate 102 is disposed in a second wearing portion of the housing 100 and spaced apart from the first pole plate 101, wherein the first wearing portion and the second wearing portion are configured to contact with a wearer when the wearable device is in a wearing state; the detection processing module 103 is connected to the first polar plate 101 and the second polar plate 102, and is configured to detect a first mutual capacitance value between the first polar plate 101 and the second polar plate 102, and determine a wearing state of the wearable device according to the first mutual capacitance value.
In particular, the wearable device may be, for example, a headset, glasses, or a bracelet, etc. The first wearable portion and the second wearable portion are different locations on the wearable device housing 100, such as shown by the dashed box in fig. 1. The distances between the first wearing portion and the second wearing portion and the wearer 200 in the wearing state are simultaneously smaller than a distance threshold, the distance threshold may be a distance value with a larger value among the distance values between the first wearing portion and the second wearing portion and the wearer when the wearable device is converted from the non-wearing state to the wearing state, as shown in fig. 2, and the distances between the first wearing portion and the target object in the non-wearing state may not be simultaneously smaller than the distance threshold, wherein the target object may be a human body or other grounding conductor. Since the first plate 101 and the second plate 102 are disposed inside the wearable device, and when the distances between the first wearable part and the wearer 200 are both smaller than the distance threshold, it can be determined that the wearable device is in a wearable state, and at this time, the first plate 101 and the second plate 102 are both covered by the wearer 200, and the wearer 200 can be regarded as a ground conductor, so that the electric field lines between the first plate 101 and the second plate 102 can be cut off by the wearer 200, thereby shortening the equivalent inter-plate distance between the first plate 101 and the second plate 102, changing the mutual capacitance between the first plate 101 and the second plate 102, and the electric field lines are distributed as shown by the dashed lines in fig. 1 and fig. 2 when the first plate 101 and the second plate 102 are uncovered and covered at the same time. The non-worn state may include a placed state or a state where at least one of the worn portions is covered with a floating conductor, wherein the floating conductor is different from the ground conductor. In the placing state, the distance between only one of the first wearing part and the second wearing part and the target object is smaller than the distance threshold value, or the distance between both the first wearing part and the second wearing part and the target object is not smaller than the distance threshold value, the three situations that the two polar plates are not covered, one of the polar plates is covered and both the two polar plates are covered correspond to different first mutual capacitance values respectively, therefore, the situation that the polar plates are covered can be judged according to the first mutual capacitance values, the distance situations between the first wearing part and the target object and the distance situations between the second wearing part and the target object are reflected, and the wearing state of the wearing equipment is further judged.
In the wearable device according to the embodiment of the invention, the first plate 101 and the second plate 102 are respectively arranged at different wearing parts and are arranged at intervals, so that the two plates are covered only in a wearing state, and the mutual capacitance between the two plates is related to the condition that the two plates are covered, therefore, the detection processing module 103 can determine whether the wearable device is in a wearing state by detecting the first mutual capacitance value between the first plate 101 and the second plate 102.
In one embodiment, the detection processing module 103 is further configured to obtain a variation trend of the first mutual capacitance value within a first preset time period, and determine that the wearable device is in a wearing state if the variation trend is an attenuation trend and an attenuation rate within the first preset time period is greater than a preset attenuation rate.
The first preset duration can be set manually according to an empirical value, and a specific value of the first preset duration can be determined according to a duration that a mutual capacitance value between the first polar plate 101 and the second polar plate 102 decreases from the beginning to a time period between the first polar plate 101 and the second polar plate 102 and the time period tending to be stable when the wearable device is switched from a reference state to a wearing state, wherein the reference state is a state that both the first polar plate 101 and the second polar plate 102 are not covered.
The variation trend of the first mutual capacitance value may include a decay trend, and it may be determined whether the first mutual capacitance value at the plurality of time points is a decay trend, for example, by performing linear fitting on the first mutual capacitance value at the plurality of time points to obtain a fitted straight line, and then calculating a slope of the fitted straight line, and if the slope is a negative number, the slope is a decay trend.
The preset attenuation rate can be artificially set according to an empirical value, and a specific value of the preset attenuation rate can be determined according to a change rate of mutual capacitance between the first polar plate 101 and the second polar plate 102 when the wearable device is switched from a reference state to a wearing state.
It can be understood that when the wearable device changes from the reference state to the wearing state, the first plate 101 and the second plate 102 are covered by the wearer 200 at the same time, and the mutual capacitance between the first plate 101 and the second plate 102 is sharply decreased, so that a variation trend of the first mutual capacitance value within a first preset time period can be obtained, and if the variation trend is an attenuation trend and the attenuation rate is greater than the preset attenuation rate, the wearing state can be determined. The wearing state of the wearable device is determined based on the characteristic that mutual capacitance between two polar plates changes rapidly when the wearable device enters the wearing state, the method is simple, and the judgment accuracy is high.
In one embodiment, the detection processing module 103 is further configured to obtain a variation trend of the first mutual capacitance value within a second preset time period, and determine that the wearable device is in a non-wearing state if the variation trend is an attenuation trend, and an attenuation rate within the second preset time period is smaller than a preset attenuation rate, or the variation trend is a growth trend.
The second preset duration can be set manually according to an empirical value, and a specific value of the second preset duration can be determined according to a duration that a mutual capacitance value between the first polar plate 101 and the second polar plate 102 is reduced from the beginning to a duration that tends to be stable when the wearable device is switched from the reference state to a state in which one of the first polar plate 101 and the second polar plate 102 is covered by the target object.
It can be understood that in the reference state, when one of the first plate 101 and the second plate 102 is approached and covered, the mutual capacitance between the first plate 101 and the second plate 102 is sharply reduced, but the change rate of the mutual capacitance is smaller than that in the case where both the first plate 101 and the second plate 102 are approached and covered, so that the change trend of the first mutual capacitance value in the second preset time period can be obtained, and the wearable device is determined to be in the non-wearing state when the change trend is the attenuation trend and the attenuation rate in the second preset time period is smaller than the preset attenuation rate.
The change trend of the first mutual capacitance value may further include a growth trend, and may be determined according to the first mutual capacitance value at a plurality of time points. For example, a linear fitting is performed on the first mutual capacitance values of a plurality of time points to obtain a fitting straight line, then the slope of the fitting straight line is calculated, and if the slope is a positive number, the trend is an increasing trend.
It is understood that when the trend of the change is a growing trend, it indicates that the ground conductor, which is not similar to a human body, covers the first plate 101 and/or the second plate 102, and thus it may be determined that the wearable device is in a non-wearing state at this time.
In one embodiment, if the variation trend in the second preset time period is a growth trend, the detection processing module 103 is further configured to calculate a growth rate of the first mutual capacitance value in a third preset time period, and if the growth rate is greater than the first preset growth rate, it is determined that the first wearing portion and/or the second wearing portion is/are covered with the conductive cover.
The conductive coating may be, for example, a conductive liquid such as human sweat or water containing impurities. The third preset time period may be set manually according to an empirical value, and a specific value thereof may be determined according to a time period from when the mutual capacitance value between the first plate 101 and the second plate 102 increases from the beginning to when the wearable device is switched from the reference state to the state where the first plate 101 and/or the second plate 102 is covered by the conductive cover to the time period when the wearable device tends to be stable.
It is understood that the conductive cover may be equivalent to a floating conductor, and when the first wearing part and/or the second wearing part is covered with the conductive cover, the corresponding first plate 101 and/or the second plate 102 is also covered by the conductive cover, and the conductive cover shortens the inter-plate distance between the first plate 101 and the second plate 102, so that the mutual capacitance value between the first plate 101 and the second plate 102 is sharply increased. Therefore, when it is determined that the trend of change is a growth trend, the detection processing module 103 may further calculate a growth rate of the first mutual capacitance value within a third preset time period, and determine that the first wearing portion and/or the second wearing portion is covered with the conductive cover if the growth rate is greater than the first preset growth rate.
When the first wearing part is covered with the conductive covering, the first electrode plate 101 is covered by the conductive covering; when the second wearing portion is covered with the conductive cover, the second pole plate 102 is covered by the conductive cover; when the first wearing part and the second wearing part are simultaneously covered with the conductive cover, the first electrode plate 101 and the second electrode plate 102 may be simultaneously covered with the conductive cover. Wherein, aiming at the condition that the first wearing part and the second wearing part are simultaneously covered with the conductive covers, the first wearing part and the second wearing part can be covered by the conductive covers in the same area, namely, the condition that only one conductive cover is arranged is corresponded; the first wearing part and the second wearing part can also be respectively covered by conductive covers in different areas, namely two conductive covers are correspondingly arranged, and the two wearing parts are respectively covered by conductor liquid in different positions.
In one embodiment, the first predetermined growth rate is greater than 10% and less than 200%.
In an embodiment, after determining that the wearable device is in the wearing state, the detection processing module 103 is further configured to detect a second mutual capacitance value between the first polar plate 101 and the second polar plate 102 and obtain a variation trend of the second mutual capacitance value within a fourth preset time period, and if the variation trend within the fourth preset time period is a growth trend and a growth rate within the fourth preset time period is greater than the second preset growth rate, determine that the wearable device is in the non-wearing state.
The fourth preset duration can be set manually according to an empirical value, and a specific value of the fourth preset duration can be determined according to a duration from the beginning of the increase of the mutual capacitance value between the first polar plate 101 and the second polar plate 102 to the trend of stability when the wearable device is switched from the wearing state to the reference state or the non-wearing state.
It is understood that when the wearable device is switched from the wearing state to the reference state or only one of the plates is covered by the grounding conductor, the equivalent inter-plate distance between the first plate 101 and the second plate 102 is elongated, the mutual capacitance value between the first plate 101 and the second plate 102 is sharply increased, and further, when the first wearing part and/or the second wearing part of the wearable device is covered by the conductive covering, the mutual capacitance value between the first plate 101 and the second plate 102 is sharply increased, so that a variation trend of the second mutual capacitance value within a fourth preset time period is obtained by detecting the second mutual capacitance value between the first plate 101 and the second plate 102, and if the variation trend within the fourth preset time period is a growth trend and the growth rate within the fourth preset time period is greater than the second preset growth rate, the wearable device is determined to be in the non-wearing state.
In one embodiment, if the wearable device is determined to be in the non-wearing state, the detection processing module is further configured to compare an increase rate of the second mutual capacitance value within a fourth preset time period with a third preset increase rate, and if the increase rate within the fourth preset time period is greater than the third preset increase rate, determine that the first wearing portion and/or the second wearing portion is/are covered with the conductive cover, where the third preset increase rate is greater than the second preset increase rate.
It can be understood that after the wearable device is changed to the non-wearing state, the first wearing part, the second wearing part, or both the first wearing part and the second wearing part may be covered with the conductive cover, so that the increase rate of the second mutual capacitance value in the fourth preset time period is greater than not only the second preset increase rate but also the third preset increase rate, and therefore, after the wearable device is determined to be in the non-wearing state, whether the first wearing part and/or the second wearing part are covered with the conductive cover can be determined according to the relationship between the increase rate of the second mutual capacitance value in the fourth preset time period and the third preset increase rate.
In one embodiment, the wearable device further comprises a temperature sensing module and a humidity sensing module, both of which are connected to the detection processing module 103. The temperature sensing module is used for sensing the ambient temperature inside the wearable device, and the humidity sensing module is used for sensing the ambient humidity inside the wearable device; the detection processing module 103 is configured to correct the first mutual capacitance value and/or the second mutual capacitance value according to the ambient temperature and the ambient humidity.
It can be understood that the ambient temperature and the ambient humidity affect the mutual capacitance between the first plate 101 and the second plate 102, so that the first mutual capacitance value, the second mutual capacitance value, or both the first mutual capacitance value and the second mutual capacitance value detected by the detection processing module 103 can be corrected according to the ambient temperature and the ambient humidity.
In one embodiment, the detection processing module is further configured to determine whether the first mutual capacitance value is in a change state within a fifth preset time period; and if the first mutual capacitance value is in a change state, acquiring a first change rate of the first mutual capacitance value in a fifth preset time length, and if the first change rate is smaller than a first change threshold, correcting the first mutual capacitance value.
The fifth preset time can be set manually according to an empirical value, and the specific value of the fifth preset time can be determined according to the time for which the first mutual capacitance value changes when the first polar plate and the second polar plate are subjected to the change of the environmental factors. The first change threshold value can be set manually according to an empirical value, and the specific value can be determined according to the change rate of the first mutual capacitance value within a fifth preset time length when the first polar plate and the second polar plate are subjected to the change of the environmental factors. The environmental factor may be, for example, a temperature factor or a humidity factor.
The change state of the first mutual capacitance value in the fifth preset time period may be determined according to a plurality of time points in the fifth preset time period, for example, the first mutual capacitance values of the plurality of time points in the fifth preset time period may be linearly fitted to obtain a fitting curve, and then the slope of the fitting straight line is calculated, and if the slope is not 0, it indicates that the change state is present.
It can be understood that, when it is determined that the first mutual capacitance value is in a change state, a first change rate of the first mutual capacitance value within a fifth preset time period may be obtained and compared with the first change threshold, a change of the first mutual capacitance value due to an environmental factor is slow, and when the first change rate is smaller than the first change threshold, it indicates that the change of the first mutual capacitance value is caused by the influence of the environmental factor, and at this time, the first mutual capacitance value may be corrected.
In one embodiment, the first mutual capacitance value may be corrected according to a first rate of change, and the first rate of change may have a mapping relationship with a correction value of the first mutual capacitance value, so that the correction value of the first mutual capacitance value may be determined according to the first rate of change, and the first mutual capacitance value may be corrected.
In one embodiment, the detection processing module is further configured to determine whether the second mutual capacitance value is in a change state within a sixth preset time period; and if the second mutual capacitance value is in a change state, acquiring a second change rate of the second mutual capacitance value in a sixth preset time length, and if the second change rate is smaller than a second change threshold, correcting the second mutual capacitance value.
The sixth preset time can be set manually according to an empirical value, and the specific value of the sixth preset time can be determined according to the time for which the second mutual capacitance value changes when the first polar plate and the second polar plate are subjected to the change of the environmental factors. The second change threshold may be set manually according to an empirical value, and a specific value thereof may be determined according to a change rate of the second mutual capacitance value within a sixth preset time period when the first and second polar plates are subjected to the change of the environmental factor. The environmental factor may be, for example, a temperature factor or a humidity factor.
The change state of the second mutual capacitance value in the fifth preset time period may be determined according to a plurality of time points in the sixth preset time period, for example, the second mutual capacitance values of the plurality of time points in the sixth preset time period may be linearly fitted to obtain a fitting curve, and then the slope of the fitting straight line is calculated, and if the slope is not 0, it indicates that the change state is present.
It can be understood that, when it is determined that the second mutual capacitance value is in a change state, a second change rate of the second mutual capacitance value in a sixth preset time period may be obtained and compared with a second change threshold, a change of the second mutual capacitance value due to an environmental factor is slow, and when the second change rate is smaller than the second change threshold, it indicates that the change of the second mutual capacitance value is caused by the influence of the environmental factor, and at this time, the second mutual capacitance value may be corrected.
In one embodiment, the second mutual capacitance value can be corrected according to a second change rate, and the second change rate can have a mapping relation with the correction value of the second mutual capacitance value, so that the correction value of the second mutual capacitance value can be determined according to the second change rate, and the second mutual capacitance value can be corrected.
In one embodiment, the wearable device may be a headset or glasses.
When the wearable device is a headset, the headset comprises at least a housing 100, a microphone (not shown) and a speaker (not shown), wherein the microphone and the speaker are arranged within an enclosed space formed by the housing.
In one embodiment, as shown in fig. 3, a sound outlet hole 104 is formed on a housing 100 of the earphone, the sound outlet hole is located in an arc region of the housing, and the first plate 101 and the second plate 102 can be respectively located at two sides of the sound outlet hole 104.
As shown in fig. 3, on one hand, in a wearing state, the sound outlet hole 104 of the earphone is right opposite to the ear hole of the wearer 200, so that the portion of the casing 100 around the sound outlet hole 104 is close to the ear of the wearer 200, and the first wearing portion and the second wearing portion can be respectively located at two sides of the sound outlet hole 104, so that the first pole plate 101 and the second pole plate 102 are arranged at two sides of the sound outlet hole 104, and can be covered by the ear of the wearer 200; on the other hand, because the side of the sound outlet hole 104 of the earphone is a cambered surface, the casing 100 on the side does not provide support for the earphone in any placing state, so that the earphone is in contact with a target object, and when the other sides of the casing 100 except the sound outlet hole 104 provide support for the earphone, the distance between at most one wearing part of the two wearing parts and a wearer is smaller than the distance threshold value at the same time, so that at most one polar plate of the two polar plates can be covered by the target object, and therefore the first polar plate 101 and the second polar plate 102 can realize that the earphone can be covered only by the two polar plates in the wearing state. It is understood that the first plate 101 and the second plate 102 are both internal to the wearable device.
In addition, the arrangement mode of the first polar plate 101 and the second polar plate 102 as shown in fig. 3 can make the earphone in the placement state in the drawing, and when the first polar plate 101 and the second polar plate 102 are covered at the same time, the conductive covering the first polar plate 101 and the second polar plate 102 is not easy to converge to one place, thereby avoiding the failure of the model which is equivalent to the conductive covering as a suspended conductor when the coverage area of the conductive covering is too large, and at this time, the judgment rule for obtaining the conductive covering according to the growth rate is not applicable.
When the wearable device is glasses, the glasses at least comprise two lenses, a frame and two frames, as shown in fig. 4.
In one embodiment, the housing 100 is a housing of a frame portion, and the first wearing portion and the second wearing portion may be respectively located on a first side 01 of a tail portion of the glasses frame, such that the first pole plate and the second pole plate are respectively located on the first side 01 of the tail portion of the glasses frame, and the first side 01 is a side of the glasses frame facing a face of a human body in a wearing state.
Specifically, the spectacle frame is a strip, the cross section of the spectacle frame is approximately square, the first side 01 of the spectacle frame is opposite to the face of a human body and is close to or in contact with the face of the human body in a wearing state, the second side 02 of the spectacle frame is opposite to a target object and is close to or in contact with the target object in an inverted state of the spectacles, and the third side (not shown) opposite to the second side 02 is opposite to the target object and is close to or in contact with the target object in an upright state of the spectacles. On one hand, when the glasses are worn, the first side 01 of the glasses frame is close to or in contact with the face of a human body, and the distance between the first wearing part and the wearer 200 and the distance between the second wearing part and the wearer 200 are smaller than the distance threshold value at the same time, so that the first pole plate 101 and the second pole plate 102 can be covered by the ears of the wearer 200; on the other hand, when the glasses are in the upright state or the inverted state, the distance between at most one wearing part of the two wearing parts and the wearer is smaller than the distance threshold value, so that at most one polar plate is close to the target object, and therefore, the first polar plate 101 and the second polar plate 102 can realize that the glasses are covered only in the wearing state.
In one embodiment, the first plate 101 and the second plate 102 may be disposed on the same plane, or the projection of the first plate 101 on the second plate 102 at least partially overlaps the second plate 102.
As shown in fig. 2 and 3, when the first polar plate 101 and the second polar plate 102 are disposed on the same plane, an electric field between the first polar plate 101 and the second polar plate 102 is expanded to the outside of the casing 100, and when the target object approaches and covers the two polar plates at the same time, the original electric field lines between the two polar plates can be cut off, so as to change the mutual capacitance between the two polar plates; the projection of the first plate 101 on the second plate 102 and the at least partial overlap of the second plate 102 may include that the two plates are parallel, as shown in fig. 5, at this time, the electric field between the two plates can also be expanded to the outside of the casing 100, so that the target object can cut off the original electric field lines between the two plates; the relative position of the first polar plate 101 to the second polar plate 102 can also be as shown in fig. 6, and the two polar plates form a deflection angle α 1 and α 2 with respect to the horizontal direction, respectively, and the value of the deflection angles α 1 and α 2 ranges from 0 ° to 90 °.
The embodiment of the present invention further provides a wearing detection method, which is applied to a wearable device, and referring to fig. 1 to 6, the wearable device includes a housing 100, a first polar plate 101, and a second polar plate 102, the first polar plate 101 is disposed in a first wearing portion of the housing 100, the second polar plate 102 is disposed in a second wearing portion of the housing 100, and is spaced from the first polar plate 101, wherein when the wearable device is in a wearing state, distances between the first wearing portion and the wearer 200 and between the second wearing portion and the wearer are simultaneously smaller than a distance threshold. Referring to fig. 7, the wear detection method may include steps S110 to S130.
In step S110, a first mutual capacitance value between the first plate 101 and the second plate 102 is obtained.
Step S120, a variation trend of the first mutual capacitance value within a first preset time duration is obtained.
In step S130, if the variation trend is an attenuation trend and the attenuation rate within the first preset time period is greater than a preset attenuation rate, it is determined that the wearable device is in a wearing state.
In one embodiment, the step S130 further includes obtaining a variation trend of the first mutual capacitance value within a first preset time period, and if the variation trend within the first preset time period is an attenuation trend and an attenuation rate within the first preset time period is greater than a preset attenuation rate, determining that the wearable device is in a wearing state.
In one embodiment, the step S130 further includes obtaining a variation trend of the first mutual capacitance value within a second preset time period, and if the variation trend within the second preset time period is an attenuation trend and an attenuation rate within the second preset time period is less than a preset attenuation rate, or the variation trend within the second preset time period is a growth trend, determining that the wearable device is in a non-wearing state.
In one embodiment, if the trend of change in the second preset time period is a growth trend, the wearing detection method further includes calculating a growth rate of the first mutual capacitance value in a third preset time period, and if the growth rate in the third preset time period is greater than the first preset growth rate, determining that the first wearing portion and/or the second wearing portion is/are covered with the conductive cover.
In an embodiment, after determining that the wearable device is in the wearing state, the wearing detection method further includes detecting a second mutual capacitance value between the first polar plate 101 and the second polar plate 102, acquiring a variation trend of the second mutual capacitance value within a fourth preset time period, and if the variation trend within the fourth preset time period is a growth trend and a growth rate within the fourth preset time period is greater than a second preset growth rate, determining that the wearable device is in the non-wearing state.
In one embodiment, if the wearable device is determined to be in the non-wearing state, the wearing detection method further includes comparing a growth rate of the second mutual capacitance value within a fourth preset time period with a third preset growth rate, and if the growth rate within the fourth preset time period is greater than the third preset growth rate, determining that the first wearing portion and/or the second wearing portion is/are covered with the conductive covering, wherein the third preset growth rate is greater than the second preset growth rate.
In one embodiment, after the step of detecting the first mutual capacitance value between the first plate 101 and the second plate 102, the wearing detection method further includes sensing an ambient temperature and an ambient humidity inside the wearable device, and correcting the first mutual capacitance value and/or the second mutual capacitance value according to the ambient temperature and the ambient humidity.
In one embodiment, the wearing detection method further includes determining whether the first mutual capacitance value is in a change state within a fifth preset time period; and if the first mutual capacitance value is in a change state, acquiring a first change rate of the first mutual capacitance value in a fifth preset time length, and if the first change rate is smaller than a first change threshold, correcting the first mutual capacitance value.
In one embodiment, the first mutual capacitance value may be corrected according to the first rate of change.
In one embodiment, the wearing detection method further includes determining whether the second mutual capacitance value is in a change state within a sixth preset time period; and if the second mutual capacitance value is in a change state, acquiring a second change rate of the second mutual capacitance value in a sixth preset time length, and if the second change rate is smaller than a second change threshold, correcting the second mutual capacitance value.
In one embodiment, the second mutual capacitance value may be corrected according to a second rate of change.
The principle and the beneficial effects of the wearing detection method of any of the above embodiments can refer to the specific description in the embodiment of the wearable device, and are not repeated herein.
The embodiment of the invention also provides a wearing detection device which is applied to wearable equipment, wherein the wearable equipment comprises a shell 100, a first polar plate 101 and a second polar plate 102, the first polar plate 101 is arranged at a first wearing part of the shell 100, the second polar plate 102 is arranged at a second wearing part of the shell 100 and is arranged at a distance from the first polar plate 101, and when the wearable equipment is in a wearing state, the distances between the first wearing part and the wearer 200 and the distances between the second wearing part and the wearer are smaller than a distance threshold value simultaneously. The wearing detection device comprises a mutual capacitance value acquisition module, a variation trend determination module and a wearing state judgment module. The mutual capacitance value obtaining module is used for obtaining a first mutual capacitance value between the first polar plate 101 and the second polar plate 102; the variation trend determining module is used for determining the variation trend of the first mutual capacitance value in a first preset time length; the wearing state judging module is used for judging that the wearable equipment is in a wearing state if the variation trend is an attenuation trend and the attenuation rate in the first preset time is greater than a preset attenuation rate.
In one embodiment, the wearing state determination module is further configured to determine that the wearable device is in a non-wearing state if the trend of change within the second preset time period is an attenuation trend, and the attenuation rate within the second preset time period is smaller than the preset attenuation rate, or the trend of change within the second preset time period is a growth trend.
In one embodiment, if the change trend in the second preset time period is a growth trend, the wearing state determination module is further configured to calculate a growth rate of the first mutual capacitance value in a third preset time period, and if the growth rate in the third preset time period is greater than the first preset growth rate, it is determined that the first wearing portion and/or the second wearing portion is/are covered with the conductive cover.
In one embodiment, after determining that the wearable device is in the wearing state, the wearing state determination module is further configured to obtain a second mutual capacitance value between the first polar plate 101 and the second polar plate 102; acquiring the variation trend of the second mutual capacitance value in a fourth preset time length; and if the variation trend in the fourth preset time length is a growth trend and the growth rate in the fourth preset time length is greater than the second preset growth rate, determining that the wearable device is in a non-wearing state.
In one embodiment, if the wearable device is determined to be in the non-wearing state, the wearing state determination module is further configured to compare an increase rate of the second mutual capacitance value within a fourth preset time period with a third preset increase rate, and if the increase rate within the fourth preset time period is greater than the third preset increase rate, determine that the first wearing portion and/or the second wearing portion is/are covered with the conductive cover, where the third preset increase rate is greater than the second preset increase rate.
In one embodiment, the wearable device may further include a temperature sensing module and a humidity sensing module, the temperature sensing module is configured to sense an ambient temperature inside the wearable device, the humidity sensing module is configured to sense an ambient humidity inside the wearable device, the wearing detection apparatus further includes a temperature acquisition module, a humidity acquisition module, and a correction module, the temperature acquisition module is configured to acquire the ambient temperature; the humidity acquisition module is used for acquiring the environment humidity; the correction module is used for correcting the first mutual capacitance value and/or the second mutual capacitance value according to the ambient temperature and the ambient humidity.
In one embodiment, the wearable device may further include a change determination module and a change rate acquisition module. The change determining module is used for determining whether the first mutual capacitance value is in a change state within a fifth preset time length, the change rate obtaining module is used for obtaining a first change rate of the first mutual capacitance value within the fifth preset time length if the first mutual capacitance value is in the change state, and the correcting module is further used for correcting the first mutual capacitance value if the first change rate is smaller than a first change threshold.
In one embodiment, the correction module may correct the first mutual capacitance value according to a first rate of change.
In an embodiment, the change determining module is further configured to determine whether the second mutual capacitance value is in a change state within a sixth preset time duration, the change rate obtaining module is further configured to obtain a second change rate of the second mutual capacitance value within the sixth preset time duration if the second mutual capacitance value is in the change state, and the correcting module is further configured to correct the second mutual capacitance value if the second change rate is smaller than a second change threshold.
In one embodiment, the correction module may correct the second mutual capacitance value according to a second rate of change.
The specific principle and beneficial effects of the wear detection device of the above embodiment can refer to the above wear detection method embodiment, and are not described herein again.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the wear detection method according to any one of the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. A wearable device, comprising:
a shell body, a plurality of first connecting rods and a plurality of second connecting rods,
a first electrode plate provided at a first wearing portion of the case;
a second polar plate arranged at a second wearing part of the shell and spaced from the first polar plate, wherein when the wearable device is in a wearing state, the distances between the first wearing part and the second wearing part and a wearer are simultaneously smaller than a distance threshold;
and the detection processing module is respectively connected with the first polar plate and the second polar plate, and is used for detecting a first mutual capacitance value between the first polar plate and the second polar plate and judging the wearing state of the wearable equipment according to the first mutual capacitance value.
2. The wearable device of claim 1, wherein the detection processing module is further configured to:
acquiring the variation trend of the first mutual capacitance value in a first preset time length;
and if the variation trend in the first preset time length is an attenuation trend and the attenuation rate in the first preset time length is greater than a preset attenuation rate, determining that the wearable equipment is in a wearing state.
3. The wearable device of claim 1, wherein the detection processing module is further configured to:
acquiring the variation trend of the first mutual capacitance value in a second preset time length;
and if the variation trend in the second preset time length is an attenuation trend, the attenuation rate in the second preset time length is smaller than a preset attenuation rate, or the variation trend in the second preset time length is a growth trend, determining that the wearable device is in a non-wearing state.
4. The wearable device according to claim 3, wherein if the trend of change within the second preset time period is a growing trend, the detection processing module is further configured to:
calculating the growth rate of the first mutual capacitance value in a third preset time length;
and if the growth rate in the third preset time period is greater than a first preset growth rate, determining that the first wearing part and/or the second wearing part is/are covered with a conductive covering.
5. The wearable device of claim 4, wherein the first preset growth rate is greater than 10% and less than 200%.
6. The wearable device of claim 2, wherein after determining that the wearable device is in a wearing state, the detection processing module is further configured to:
detecting a second mutual capacitance value between the first polar plate and the second polar plate;
acquiring the variation trend of the second mutual capacitance value within a fourth preset time length;
and if the variation trend in the fourth preset time length is a growth trend and the growth rate in the fourth preset time length is greater than a second preset growth rate, determining that the wearable device is in a non-wearing state.
7. The wearable device of claim 6, wherein if the wearable device is determined to be in a non-wearing state, the detection processing module is further configured to:
comparing the growth rate of the second mutual capacitance value in a fourth preset time length with a third preset growth rate;
if the growth rate within a fourth preset time period is greater than the third preset growth rate, it is determined that the first wearing portion and/or the second wearing portion is covered with a conductive cover, wherein the third preset growth rate is greater than the second preset growth rate.
8. The wearable device according to any of claims 1-7, further comprising:
a temperature sensing module for sensing an ambient temperature inside the wearable device;
a humidity sensing module for sensing an ambient humidity inside the wearable device;
the detection processing module is respectively connected with the temperature sensing module and the humidity sensing module and is used for correcting the first mutual capacitance value and/or the second mutual capacitance value according to the environment temperature and the environment humidity.
9. The wearable device according to any of claims 1-5, wherein the detection processing module is further configured to:
judging whether the first mutual capacitance value is in a change state within a fifth preset time length;
if the first mutual capacitance value is in a change state, acquiring a first change rate of the first mutual capacitance value within a fifth preset time length;
and if the first change rate is smaller than a first change threshold value, correcting the first mutual capacitance value.
10. The wearable device of claim 6, wherein the detection processing module is further to:
judging whether the second mutual capacitance value is in a change state within a sixth preset time length;
if the second mutual capacitance value is in a changing state, acquiring a second changing rate of the second mutual capacitance value within a sixth preset time length;
and if the second change rate is smaller than a second change threshold value, correcting the second mutual capacitance value.
11. The wearable device of claim 1, wherein the wearable device is an earpiece or glasses.
12. The wearable device of claim 1, wherein the first plate and the second plate are disposed in a same plane, or a projection of the first plate on the second plate at least partially overlaps the second plate.
13. A wearing detection method is applied to a wearable device, the wearable device comprises a shell, a first polar plate and a second polar plate, the first polar plate is arranged at a first wearing part of the shell, the second polar plate is arranged at a second wearing part of the shell and is arranged at a distance from the first polar plate, when the wearable device is in a wearing state, the distances between the first wearing part and the second wearing part and a wearer are simultaneously smaller than a distance threshold value, and the wearing detection method comprises the following steps:
acquiring a first mutual capacitance value between the first polar plate and the second polar plate;
acquiring the variation trend of the first mutual capacitance value in a first preset time length;
and if the variation trend in the first preset time length is an attenuation trend and the attenuation rate in the first preset time length is greater than a preset attenuation rate, determining that the wearable equipment is in a wearing state.
14. The wearing detection device is applied to wearable equipment, the wearable equipment comprises a shell, a first polar plate and a second polar plate, the first polar plate is arranged at a first wearing part of the shell, the second polar plate is arranged at a second wearing part of the shell and is spaced from the first polar plate, and when the wearable equipment is in a wearing state, the distances between the first wearing part and the wearer and the distances between the second wearing part and the wearer are smaller than a distance threshold value simultaneously; the wear detection device includes:
the mutual capacitance value acquisition module is used for acquiring a first mutual capacitance value between the first polar plate and the second polar plate;
the variation trend determining module is used for determining the variation trend of the first mutual capacitance value in a first preset time length;
and the wearing state judging module is used for judging that the wearable equipment is in a wearing state if the variation trend in the first preset time is an attenuation trend and the attenuation rate in the first preset time is greater than a preset attenuation rate.
15. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method as claimed in claim 13.
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