CN107703779B - Method and device for controlling opening and closing of function by identifying whether wearable equipment is worn or not - Google Patents
Method and device for controlling opening and closing of function by identifying whether wearable equipment is worn or not Download PDFInfo
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- G05B19/00—Programme-control systems
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Abstract
The invention discloses a method and a device for controlling the on-off of related functions by identifying whether wearable equipment is worn or not and the wearable equipment comprising the device, wherein the method comprises the following steps: the method comprises the steps of collecting acceleration data at a first sampling frequency through a three-axis acceleration sensor in the wearable device; a posture judgment step of judging whether the equipment is in a specific posture indicating that the equipment is not worn or not according to the acquired acceleration data; and a control step, which is used for controlling the starting of the relevant functions of the equipment when the equipment is judged to be worn; and/or shutting down the related function of the device when the device is judged not to be worn. According to the method and the device for controlling the on-off of the related functions by identifying whether the wearable device is worn or not and the wearable device, the false triggering can be reduced, and the power consumption of the product can be reduced.
Description
Technical Field
The present invention relates to a method and an apparatus for controlling a wearable device, and more particularly, to a method and an apparatus for controlling the on/off of a function by identifying whether the wearable device is worn, and a wearable device including the apparatus.
Background
Wearable devices are generally small in size and cannot put down a large-capacity battery. To prolong the endurance time, the most effective method is to reduce the power consumption of the product. On the premise of ensuring the endurance time of the product, the power consumption of the product is reduced, and the volume of the product can be correspondingly reduced. For small and lightweight products, reducing power consumption is a major concern. There are various methods for reducing power consumption, and among them, according to the usage scenario, the on and off time of some functions is selected to reduce unnecessary energy consumption, which is an effective method for reducing power consumption.
For this reason, a method for detecting whether the wearable device is touched or moved using an acceleration sensor or a vibration dome is proposed. Once the wearable device is found to be touched or moved, other power-intensive functions, such as blood pressure measurement, temperature measurement, motion recognition, etc., are turned on. Although the method is fast in response, erroneous judgment is easy. For example, a PPG heart rate bracelet is placed on a desk or a bed, if a user accidentally bumps the bracelet, the bracelet can light up the LED immediately to measure the heart rate, on one hand, the power is consumed, and on the other hand, the bracelet disturbs others. For another example, if the user does not wear the PPG heart rate bracelet when sleeping, but places the bracelet around the pillow for the user to see the time when getting up, then when the user turns around during sleeping or turns over in bed at midnight, the bracelet around the pillow suddenly lights up, which is a very unfriendly experience.
Therefore, a new method for controlling whether the related function of the wearable device is turned on or off is needed, and the function with higher power consumption can be automatically turned off after being executed, so that the overall power consumption of the product is reduced. In addition, when a function with large power consumption is started, malfunction can be avoided.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method and a device for controlling the on-off of related functions by identifying whether a wearable device is worn or not and the wearable device comprising the device. In order to realize the purpose, the technical scheme adopted by the invention is as follows:
according to a first aspect of the embodiments of the present invention, there is provided a method for controlling on and off of related functions by identifying whether a wearable device is worn, including: the method comprises an acquisition step, a processing step and a processing step, wherein the acquisition step is used for acquiring acceleration data at a first sampling frequency through a three-axis acceleration sensor in the wearable equipment; a posture judgment step of judging whether the equipment is in a specific posture indicating that the equipment is not worn or not according to the acquired acceleration data; and a control step, which is used for controlling the starting of the relevant functions of the equipment when the equipment is judged to be worn; and/or shutting down the related function of the device when the device is judged not to be worn.
According to one embodiment, the method for controlling the on-off of the related function by identifying whether the wearable device is worn further comprises a posture confirmation step, wherein the posture confirmation step is used for collecting acceleration at a second sampling frequency which is higher than the first sampling frequency in a preset first time window period under the condition that collected acceleration data do not meet the requirement that the wearable device is in a specific posture, counting each sampling point in the first time window period, and determining that the wearable device is worn or is ready to be worn when the proportion which does not meet the requirement of the specific posture is larger than or equal to a first threshold; and when the proportion meeting the specific posture requirement in the first time window period is greater than or equal to a second threshold value, determining that the equipment is touched by mistake, and returning the first sampling frequency by the triaxial acceleration sensor.
According to still another embodiment, the method for controlling the on/off of the related function by identifying whether the wearable device is worn or not further comprises a fluctuating signal detection step for detecting a periodically fluctuating optical signal through a PPG heart rate sensor in the wearable device; when the periodically fluctuating optical signal meeting the requirement is detected, the equipment is confirmed to be worn, and the related function of the equipment is started.
According to another embodiment, the method for controlling the on-off of the related function by identifying whether the wearable device is worn further comprises a posture reconfirmation step, wherein the posture reconfirmation step is used for collecting the acceleration in a preset second time window period under the condition that the light signal which fluctuates periodically cannot be detected, counting each sampling point in the second time window period, and when the proportion meeting the specific posture requirement is greater than or equal to a third threshold value, determining that the device is detached, and returning the three-axis acceleration sensor to the first sampling frequency; otherwise, a prompt is made that the measurement cannot be performed.
According to a second aspect of the embodiments of the present invention, there is also provided a method for controlling on and off of a related function by identifying whether a wearable device is worn, including: a fluctuating signal detection step, which is used for detecting a periodically fluctuating optical signal through a PPG heart rate sensor in the wearable equipment; and a control step, which is used for confirming that the equipment is worn and controlling the related functions of the equipment to start when the periodically fluctuating optical signal meeting the requirement is detected; and/or shutting down the associated function of the device upon confirming that the device is not being worn.
According to another embodiment, the method for controlling the on-off of the related function by identifying whether the wearable device is worn further comprises a posture reconfirmation step, wherein the posture reconfirmation step is used for collecting the acceleration in a preset second time window period under the condition that the light signal which fluctuates periodically cannot be detected, counting each sampling point in the second time window period, and when the proportion meeting the specific posture requirement is greater than or equal to a third threshold value, determining that the device is detached, and returning the three-axis acceleration sensor to the first sampling frequency; otherwise, a prompt is made that the measurement cannot be performed.
According to a third aspect of the embodiments of the present invention, there is provided an apparatus for controlling on/off of a related function by identifying whether a wearable device is worn, including: the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring acceleration data at a first sampling frequency through a three-axis acceleration sensor in the wearable equipment; the posture judging module is used for judging whether the equipment is in a specific posture indicating that the equipment is not worn or not according to the acquired acceleration data; the control module is used for controlling the starting of the related functions of the equipment when the equipment is judged to be worn; and/or shutting down the related function of the device when the device is judged not to be worn.
According to one embodiment, the device for controlling the on-off of the related function by identifying whether the wearable device is worn further comprises a posture confirmation module, wherein the posture confirmation module is used for collecting acceleration at a second sampling frequency greater than the first sampling frequency in a preset first time window period under the condition that collected acceleration data do not meet the requirement that the device is in a specific posture, counting each sampling point in the first time window period, and when the proportion which does not meet the requirement of the specific posture is greater than or equal to a first threshold value, the device is worn or is ready to be worn; and when the proportion meeting the specific posture requirement in the first time window period is greater than or equal to a second threshold value, determining that the equipment is touched by mistake, and returning the first sampling frequency by the triaxial acceleration sensor.
According to still another embodiment, the device for controlling the on/off of the related function by identifying whether the wearable device is worn or not further comprises a fluctuating signal detection module, which is used for detecting a periodically fluctuating optical signal through a PPG heart rate sensor in the wearable device; when the periodically fluctuating optical signal meeting the requirement is detected, the equipment is confirmed to be worn, and the related function of the equipment is started.
According to another embodiment, the device for controlling the on-off of the related functions by identifying whether the wearable device is worn further comprises a posture reconfirmation module, which is used for collecting the acceleration in a preset second time window period under the condition that the light signal which fluctuates periodically cannot be detected, counting each sampling point in the second time window period, determining that the device is detached when the proportion which meets the requirement of a specific posture is greater than or equal to a third threshold value, and returning the first sampling frequency to the triaxial acceleration sensor; otherwise, a prompt is made that the measurement cannot be performed.
According to a fourth aspect of the embodiments of the present invention, there is also provided an apparatus for controlling on and off of related functions by identifying whether a wearable device is worn, including: the device comprises a fluctuation signal detection module, a data processing module and a control module, wherein the fluctuation signal detection module is used for detecting a periodically fluctuating optical signal through a PPG heart rate sensor in the wearable device; the control module is used for confirming that the equipment is worn and controlling the related functions of the equipment to start when the periodically fluctuating optical signal meeting the requirement is detected; and/or shutting down the related function of the device when the device is judged not to be worn.
According to another embodiment, the device for controlling the on-off of the related functions by identifying whether the wearable device is worn further comprises a posture reconfirmation module, which is used for collecting the acceleration in a preset second time window period under the condition that the light signal which fluctuates periodically cannot be detected, counting each sampling point in the second time window period, determining that the device is detached when the proportion which meets the requirement of a specific posture is greater than or equal to a third threshold value, and returning the first sampling frequency to the triaxial acceleration sensor; otherwise, a prompt is made that the measurement cannot be performed.
According to a fifth aspect of embodiments of the present invention, there is provided a wearable device comprising the apparatus according to the third or fourth aspect of embodiments of the present invention.
According to the method and the device for controlling the on-off of the related functions by identifying whether the wearable device is worn or not and the wearable device, the false triggering can be reduced, and the power consumption of the product can be reduced.
The present invention will now be described more fully hereinafter by way of example with reference to the accompanying drawings, in which like reference numerals refer to like or substantially like parts.
Drawings
Fig. 1 is a schematic flow chart of a method for controlling on/off of related functions by identifying whether a wearable device is worn according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram of a method for controlling the on/off of related functions by identifying whether a wearable device is worn according to another embodiment of the invention;
FIG. 3 illustrates a particular pose of a wearable device according to an embodiment of the invention;
FIG. 4 shows a time domain waveform diagram of an optical signal with periodic fluctuation detected by a PPG sensor when a bracelet is worn on a hand
FIG. 5 is a corresponding frequency domain waveform diagram of FIG. 4;
fig. 6 shows a time domain waveform diagram detected by the PPG sensor without obstacles when the bracelet is placed on a table top;
FIG. 7 is a corresponding frequency domain waveform diagram of FIG. 6;
fig. 8 shows a time domain waveform diagram of PPG sensor detection against an obstacle when the bracelet is wrapped around an object without blood flow;
FIG. 9 is a corresponding frequency domain waveform diagram of FIG. 8;
FIG. 10 is a schematic flow chart of a process for controlling the opening and closing of related functions by identifying whether a wearable device is worn according to an example of the present invention;
fig. 11 is a schematic structural block diagram of an apparatus for controlling on/off of related functions by identifying whether a wearable device is worn according to an embodiment of the present invention; and
fig. 12 is a schematic structural block diagram of an apparatus for controlling on/off of related functions by identifying whether a wearable device is worn according to another embodiment of the invention.
Detailed Description
As shown in fig. 1, the schematic flowchart of a method for controlling on/off of related functions by identifying whether a wearable device is worn according to an embodiment of the present invention mainly includes: an acquisition step 100, a posture judgment step 102, and a control step 110; in other embodiments, it further optionally comprises: a pose confirmation step 104, a wave signal detection step 106, and/or a pose reconfirmation step 108.
As shown in fig. 2, the schematic flowchart of a method for controlling on/off of related functions by identifying whether a wearable device is worn according to another embodiment of the present invention mainly includes: a fluctuation signal detection step 106, and a control step 110; in other embodiments, a gesture reconfirmation step 108 is also optionally included.
The wearable device related to the embodiment of the present invention may be a bracelet, a watch, an earphone, glasses, and the like, and the above steps are described in detail below by taking a PPG heart rate bracelet as an example.
The bracelet is equipped with a triaxial acceleration sensor, and in an acquisition step 100, acceleration data is acquired at a first sampling frequency by the triaxial acceleration sensor in the wearable device.
In a posture determination step 102, it is determined from the collected acceleration data whether the device is in a particular posture indicating not being worn. Wherein can judge what kind of gesture the bracelet is in through the numerical value of triaxial acceleration, and then judge whether the bracelet is static to place in somewhere to whether discernment user has worn the bracelet. Due to the special design of the bracelet, when the bracelet is placed on a table top, certain postures always occur easily, and the posture is defined as a specific posture. As shown in fig. 3, the most easily appeared state is that the front 301 of the display screen forms a fixed angle with the desktop, and the edge 303 of the wristband contacts the desktop, assuming that the values output by the three-axis acceleration sensor are X1, Y1, and Z1, respectively, then when the data X, Y, and Z acquired by the three-axis acceleration sensor satisfy | X-X1| < XTHD, | Y-Y1| < YTHD, | Z-Z1| < ZTHD, the wristband can be determined to be in the "specific posture"; similarly, the handle ring is rotated 180 degrees, so that the edge of the wrist strap not originally contacting the desktop contacts the desktop, and the above situation is also true, and at this time, another group of values satisfying the "specific posture" can be recorded as X2, Y2 and Z2. When the data X, Y and Z collected by the triaxial acceleration sensor respectively satisfy | X-X2| < XTHD, | Y-Y2| < YTHD, | Z-Z2| < ZTHD, it is determined that the bracelet is in the "specific posture". The above is only an example, if there are other "specific postures" indicating that the bracelet is not worn, the improvement can be continued, and the invention is not limited to two postures, and only two most typical postures are taken for the description here. Wherein XTHD, YTHD, ZTHD is the error detection range of specific gesture, generally speaking, its value should guarantee that the gesture that measures deviates not more than 15 degrees with the gesture of setting for, and the desktop that uses when mainly wanting compatible parameter design and the plane that the user actually placed the bracelet can not be in same horizontal plane completely to improve the fault-tolerant range of "specific gesture" detection.
If the bracelet is placed on the desktop in a static mode and the acquired three-axis acceleration data meet the requirement of a specific gesture, the three-axis acceleration sensor acquires acceleration at a lower sampling rate (namely, a first sampling rate). According to one embodiment, where the first sampling rate may be set at or around 0.5Hz, a low sampling rate may reduce power consumption.
In the gesture confirming step 104, when the acquired acceleration data does not meet the requirement of the "specific gesture", the triaxial acceleration sensor is switched to a higher sampling rate (i.e. the second sampling rate), and the gesture of the bracelet is determined at a faster frequency. Moreover, a first time window period T1 for gesture confirmation can be set, each sampling point is counted in the first time window period, and when the ratio that does not meet the requirement of the specific gesture is greater than or equal to a first threshold, the user is considered to wear the bracelet or is ready to wear the bracelet, and a heart rate sensor and the like can be started to perform the next judgment, or some related functions such as call reminding and alarm clock can be directly started. When the proportion meeting the requirement of the specific gesture in the first time window period is larger than or equal to the second threshold value, the bracelet is considered to be only touched by mistake, a user does not intend to wear the bracelet, and the triaxial acceleration sensor returns a low sampling rate, namely the first sampling rate. According to an embodiment, wherein the second sampling rate can be set to 10Hz or about, a high sampling rate can improve the accuracy of the posture judgment; additionally, the first time window period T1 is an empirical value, and may be selected to be 5 consecutive seconds or thereabouts; the first threshold is also an empirical value, and is preferably 80% or more appropriately calculated through experimental statistics; the second threshold is also an empirical value, and is preferably 90% or more by experimental statistics.
In a fluctuating signal detection step 106, a periodically fluctuating light signal is detected by a PPG heart rate sensor in the wearable device. The PPG heart rate sensor is mainly composed of two parts, an LED and a PD (photo sensor), the LED emits light of a specific wavelength, and the light is attenuated to a certain extent when the light is transmitted through skin tissue and then reflected to the PD. The absorption of light by the muscles, bones, veins and other connective tissue, etc. is substantially constant without large movements of the measurement site. However, unlike blood, the volume of a blood vessel at a certain position changes due to the flow of blood in the blood vessel, and accordingly the absorption of light changes. When converting light into an electrical signal, it is because the absorption of light by blood vessels varies and the absorption of light by other tissues remains substantially constant, and the resulting signal can be divided into a direct current DC signal (which can be considered as the intensity of the reflected signal) and an alternating current AC signal (which can be considered as the variation of the reflected signal). The AC signal is extracted to reflect the characteristics of blood flow. If the user wears the bracelet, the PD detects the periodically fluctuating optical signal meeting the requirement, and other related functions such as body temperature measurement, blood pressure measurement and the like can be further started at the moment; if the PD can not detect the periodically fluctuating optical signal meeting the requirement, the user can be further judged to be wearing the bracelet but can not detect the heart rate; or the bracelet has been taken off.
In the posture reconfirming step 108, in the case that the periodically fluctuating optical signal cannot be detected, the acceleration is collected in a predetermined second time window period, and each sampling point in the second time window period is counted. When the proportion meeting the specific attitude requirement is larger than or equal to a third threshold value, determining that the equipment is taken off, and returning the first sampling frequency by the triaxial acceleration sensor; otherwise, a prompt is made that the measurement cannot be performed. Specifically, when the PD cannot detect a periodically fluctuating optical signal that meets the requirement, a determination window T2 (i.e., a predetermined second time window period) is set, and when the ratio of sampling points acquired by the three-axis acceleration sensor in T2 that meet the "specific posture" is greater than or equal to a third threshold value, the user is considered to have taken off the bracelet. Otherwise, the heart rate sensor is kept turned on, whether the PD can collect the periodically fluctuating optical signals meeting the requirements is continuously monitored, if yes, the frequency of the periodically fluctuating optical signals is calculated, so that the heart rate value is calculated and displayed on the bracelet interface, and if not, a prompt that the measurement cannot be carried out is made on the bracelet interface, so that the user is reminded to wear the wrist watch again. Where T2 is an empirical value, which in one embodiment may be set at or about 60 seconds; the third threshold is also an empirical value and, in one embodiment, may be set at 100%.
The process of identifying a periodically fluctuating optical signal is as follows. Fig. 4 is a time-domain waveform diagram of an optical signal with periodic fluctuation measured by a PPG sensor when the bracelet is worn on a hand, and fig. 5 is a frequency-domain waveform diagram corresponding to fig. 4. Fig. 6 is a time domain waveform diagram acquired by the PPG sensor when the bracelet is placed on a table and there is no obstacle in front of the PPG sensor, and fig. 7 is a frequency domain waveform diagram corresponding to fig. 6. Fig. 8 is a time domain waveform diagram acquired by the PPG sensor against an obstacle when the bracelet is wrapped around an object without blood flow, and fig. 9 is a frequency domain waveform diagram corresponding to fig. 8. The horizontal axis of the time domain waveform graph is time, the interval of each point in the graph is 1/25s (namely, the sensor performs data acquisition at a sampling rate of 25 Hz), and the vertical axis is amplitude. The horizontal axis of the frequency domain oscillogram is a Bin value, the interval between two adjacent Bin values corresponds to the interval of frequency, and the Bin value corresponds to the frequency value. The frequency spacing or resolution of the frequency axis depends on the sampling frequency fs (the frequency at which the original signal is sampled) and the number of data records Nr (the number of samples in fourier transforming the time domain).
The conversion relation between the frequency f and the Bin value is as follows: f = Bin x (fs/Nr);
converting into a heart rate value according to a certain frequency value: HR = f × 60;
in this example, Nr is 512 and fs is 25 Hz.
As can be seen from the time domain waveform, when the bracelet is worn on the hand, the amplitude of each wave is high, the amplitude is relatively stable, and the intervals have certain periodicity. For convenience of judgment, the time domain waveform is subjected to fourier transform, and if the time domain waveform has periodic fluctuation in the time domain and the amplitude is relatively large, a peak with a large amplitude appears at a corresponding frequency in the frequency domain waveform. It can be seen more clearly that the peak of the frequency domain maximum peak is higher when worn on the hand than in the other two cases. Whether the bracelet is worn on the hand or not can be identified by limiting the maximum peak amplitude. In one embodiment, when the maximum peak in the frequency domain is greater than 1200, it can be determined that the periodically fluctuating optical signal meeting the requirement is collected. Where 1200 is an empirical value that takes into account the best possible distinction between wearing on the hand and other situations.
In the control step 110, when the device is judged to be worn, the relevant functions of the control device are started. The related functions include, but are not limited to, for example, body temperature measurement, blood pressure measurement, call reminder, alarm clock, and the like. In another embodiment, the controlling step 110 may further include turning off the heart rate sensor, changing the tri-axial accelerometer sampling rate to the first sampling rate, and also turning off other related functions that are turned on during wearing of the bracelet, when it is determined that the bracelet is not worn.
Although the steps in the above embodiments are described in a certain order, this is not a limitation, and is only for convenience of description. For example, in one embodiment, the order of the wobble signal detection step 106 and the control step 110 may be reversed.
Fig. 10 is a schematic flow chart of a process for controlling on/off of related functions by identifying whether a wearable device is worn according to an example of the present invention. At block 1001, acceleration is acquired at a first sampling frequency (i.e., step 100); then, the process proceeds to block 1003, and determines whether the device is in a specific posture (i.e., step 102), and if the device is determined to be in the specific posture, the process returns to block 1001; otherwise, go to block 1005, acquire acceleration data at the second sampling frequency, then go to block 1007, count the acceleration sample value distribution within the first time window period T1, and determine whether the ratio not in the specific posture is greater than or equal to threshold 1 (i.e. the first threshold) at block 1009; if not, go to block 1011 to determine whether the ratio at the specific gesture is greater than or equal to the threshold 2 (i.e., the second threshold) (i.e., step 104); if no, block 1005 is returned, if yes, block 1001 is returned. If it is determined at block 1009 that the proportion not in the particular pose is greater than or equal to the first threshold, then block 1013 is entered where some relevant function of the device is turned on (i.e., step 110).
Then, block 1015 is entered to detect the periodic fluctuation signal (i.e., step 106). At a block 1017, judging whether the periodic fluctuation signal meets the requirement, if not, entering a block 1019, prompting abnormal wearing and counting the acceleration sampling value distribution within the time of a second time window period T2; at block 1021, it is determined whether the ratio at the particular pose is greater than or equal to threshold 3 (i.e., the third threshold) (i.e., step 108); if so, block 1023 is entered, the heart rate sensor is turned off and the associated function is turned off, and then block 1001 is returned to; if not, at return block 1015, the periodically fluctuating signal is again detected. If at block 1017, the periodically fluctuating signal is determined to meet the requirements, block 1025 is entered, where the heart rate is calculated and other related functions may be enabled (i.e., step 110).
As shown in fig. 11, the schematic block diagram of an apparatus 1100 for controlling on/off of related functions by identifying whether a wearable device is worn according to an embodiment of the present invention mainly includes: an acquisition module 1101, a posture judgment module 1103, and a control module 1111; in other embodiments, it further optionally comprises: a pose confirmation module 1105, a wave signal detection module 1107, and/or a pose re-confirmation module 1109. Wherein the content of the first and second substances,
-an acquisition module 1101 for performing step 100, which module may be implemented by a processor in the wearable device, and a three-axis acceleration sensor under control of the processor, etc., for acquiring acceleration data at a first sampling frequency;
-an attitude determination module 1103 for performing step 102, which may be implemented by a processor, a memory, etc. in the wearable device, for determining from the acquired acceleration data whether the device is in a particular attitude indicating not being worn;
-an attitude determination module 1105 for executing step 104, which may be implemented by a processor, a timer, a memory, a three-axis acceleration sensor, etc. in the wearable device, for collecting acceleration at a second sampling frequency greater than the first sampling frequency during a predetermined first time window if the collected acceleration data does not satisfy that the device is in a specific attitude, and counting each sampling point during the first time window, and determining that the device is worn or is ready to be worn when the ratio that does not satisfy the specific attitude requirement is greater than or equal to a first threshold; when the proportion meeting the specific posture requirement in the first time window period is larger than or equal to a second threshold value, determining that the equipment is touched by mistake, and returning the first sampling frequency by the triaxial acceleration sensor;
-a fluctuating signal detection module 1107 for performing step 106, which module may be implemented by a processor in the wearable device, a PPG sensor, etc., for detecting periodically fluctuating light signals;
-an attitude re-confirmation module 1109 is used to execute step 108, which can be implemented by a processor, a timer, a memory, a triaxial acceleration sensor, etc. in the wearable device, and is used to collect acceleration in a predetermined second time window period under the condition that the periodically fluctuating optical signal cannot be detected, and count each sampling point in the second time window period, and when the proportion meeting the specific attitude requirement is greater than or equal to a third threshold value, it is determined that the device is detached, and the triaxial acceleration sensor returns to the first sampling frequency; otherwise, making a prompt that the measurement cannot be carried out; and
-a control module 1111 for performing step 110, which module may be implemented by a processor or the like in the wearable device, for controlling the activation of the relevant functions of the device when it is determined that the device is worn; and/or shutting down the related function of the device when the device is judged not to be worn.
As shown in fig. 12, the schematic block diagram of an apparatus 1200 for controlling on/off of related functions by identifying whether a wearable device is worn according to another embodiment of the present invention mainly includes: a ripple signal detection module 1107, and a control module 1111; in other embodiments, a pose reconfirmation module 1109 is also optionally included. Wherein the content of the first and second substances,
-a fluctuating signal detection module 1107 for performing step 106, which module may be implemented by a processor in the wearable device, a PPG sensor, etc., for detecting periodically fluctuating light signals;
-an attitude re-confirmation module 1109 is used to execute step 108, which can be implemented by a processor, a timer, a memory, a triaxial acceleration sensor, etc. in the wearable device, and is used to collect acceleration in a predetermined second time window period under the condition that the periodically fluctuating optical signal cannot be detected, and count each sampling point in the second time window period, and when the proportion meeting the specific attitude requirement is greater than or equal to a third threshold value, it is determined that the device is detached, and the triaxial acceleration sensor returns to the first sampling frequency; otherwise, making a prompt that the measurement cannot be carried out; and
-a control module 1111 for performing step 110, which module may be implemented by a processor or the like in the wearable device, for controlling the activation of the relevant functions of the device when it is determined that the device is worn; and/or shutting down the related function of the device when the device is judged not to be worn.
The apparatus for controlling on/off of related functions by identifying whether a wearable device is worn according to the above embodiments may be implemented in various wearable devices, such as a bracelet, a watch, an earphone, glasses, etc., through software, hardware, firmware, or a combination thereof, which will be readily understood by those skilled in the art and will not be described in detail herein.
The present invention has been described above with reference to specific examples, but the present invention is not limited to these specific examples. It should be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention, for example, one step or module in the above-described embodiments is divided into two or more steps or modules to realize, or conversely, the functions of two or more steps or modules in the above-described embodiments are put into one step or module to realize. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application, such as "first," "second," and the like, are not limiting and are used for descriptive purposes only. Furthermore, the various references above to "one embodiment," "another embodiment," and so forth, refer to different embodiments, which may, of course, be combined in whole or in part in a single embodiment.
Claims (7)
1. A method for controlling on and off of related functions by identifying whether a wearable device is worn or not is characterized by comprising the following steps:
the method comprises an acquisition step, a processing step and a processing step, wherein the acquisition step is used for acquiring acceleration data at a first sampling frequency through a three-axis acceleration sensor in the wearable equipment;
a posture judgment step of judging whether the equipment is in a specific posture indicating that the equipment is not worn or not according to the acquired acceleration data; wherein the particular pose is a pose of the wearable device when the desktop is placed stationary;
a control step, which is used for controlling the starting of the relevant functions of the equipment when the equipment is judged to be worn; and/or when the device is judged not to be worn, closing the related functions of the device; and
a posture confirmation step, which is used for collecting acceleration at a second sampling frequency which is higher than the first sampling frequency in a preset first time window period under the condition that the collected acceleration data does not meet the requirement that the equipment is in a specific posture, counting each sampling point in the first time window period, and determining that the equipment is worn or is ready to be worn when the proportion which does not meet the requirement of the specific posture is larger than or equal to a first threshold value; and when the proportion meeting the specific posture requirement in the first time window period is greater than or equal to a second threshold value, determining that the equipment is touched by mistake, and returning the first sampling frequency by the triaxial acceleration sensor.
2. The method for controlling on and off of related functions by identifying whether a wearable device is worn according to claim 1, further comprising:
a fluctuating signal detection step, which is used for detecting a periodically fluctuating optical signal through a PPG heart rate sensor in the wearable equipment;
when the periodically fluctuating optical signal meeting the requirement is detected, the equipment is confirmed to be worn, and the related function of the equipment is started.
3. The method for controlling on and off of related functions by identifying whether a wearable device is worn according to claim 2, further comprising:
the attitude reconfirming step is used for acquiring acceleration in a preset second time window period under the condition that the periodically fluctuating optical signal cannot be detected, counting each sampling point in the second time window period, determining that the equipment is taken off when the proportion meeting the specific attitude requirement is greater than or equal to a third threshold value, and returning the first sampling frequency by the triaxial acceleration sensor; otherwise, a prompt is made that the measurement cannot be performed.
4. A device for controlling on and off of related functions by identifying whether wearable equipment is worn or not is characterized by comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring acceleration data at a first sampling frequency through a three-axis acceleration sensor in the wearable equipment;
the posture judging module is used for judging whether the equipment is in a specific posture indicating that the equipment is not worn or not according to the acquired acceleration data; wherein the particular pose is a pose of the wearable device when the desktop is placed stationary;
the control module is used for controlling the starting of the related functions of the equipment when the equipment is judged to be worn; and/or when the device is judged not to be worn, closing the related functions of the device; and
the attitude confirmation module is used for collecting acceleration at a second sampling frequency which is higher than the first sampling frequency in a preset first time window period under the condition that the collected acceleration data do not meet the requirement that the equipment is in a specific attitude, counting each sampling point in the first time window period, and when the proportion which does not meet the requirement of the specific attitude is larger than or equal to a first threshold value, the equipment is worn or is ready to be worn; and when the proportion meeting the specific posture requirement in the first time window period is greater than or equal to a second threshold value, determining that the equipment is touched by mistake, and returning the first sampling frequency by the triaxial acceleration sensor.
5. The apparatus for controlling on/off of related functions by identifying whether a wearable device is worn according to claim 4, further comprising:
the device comprises a fluctuation signal detection module, a data processing module and a control module, wherein the fluctuation signal detection module is used for detecting a periodically fluctuating optical signal through a PPG heart rate sensor in the wearable device;
when the periodically fluctuating optical signal meeting the requirement is detected, the equipment is confirmed to be worn, and the related function of the equipment is started.
6. The apparatus for controlling on/off of related functions by identifying whether a wearable device is worn according to claim 5, further comprising:
the attitude reconfirmation module is used for acquiring acceleration in a preset second time window period under the condition that the periodically fluctuating optical signal cannot be detected, counting each sampling point in the second time window period, determining that the equipment is taken off when the proportion meeting the specific attitude requirement is greater than or equal to a third threshold value, and returning the first sampling frequency by the triaxial acceleration sensor; otherwise, a prompt is made that the measurement cannot be performed.
7. A wearable device, characterized by: comprising a device according to any of claims 4 to 6.
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| CN108416388B (en) * | 2018-03-13 | 2022-03-11 | 武汉久乐科技有限公司 | State correction method and device and wearable equipment |
| EP4276522A3 (en) * | 2018-05-29 | 2024-01-31 | Apple Inc. | Optical system for head-mounted display |
| CN109036541B (en) * | 2018-07-12 | 2021-06-25 | 广东小天才科技有限公司 | Wearable device use reminding method and wearable device |
| CN108873379A (en) * | 2018-08-01 | 2018-11-23 | 北京睿世力科技有限公司 | A kind of intelligence Zoom glasses and its Zooming method |
| CN112964175A (en) * | 2021-01-28 | 2021-06-15 | 歌尔科技有限公司 | Wearing detection module, wearing detection method and wearable device |
| JP2022156159A (en) * | 2021-03-31 | 2022-10-14 | セイコーエプソン株式会社 | Head-mounted device, and control method and control program for head-mounted device |
| CN113965953B (en) * | 2021-11-19 | 2023-12-08 | 恒玄科技(上海)股份有限公司 | Control method of wearable device and wearable device |
| CN114947788A (en) * | 2022-07-28 | 2022-08-30 | 深圳市奋达智能技术有限公司 | Blood pressure measurement abnormity detection method and device |
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