CN210185569U - Wearable device - Google Patents
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- CN210185569U CN210185569U CN201920312720.XU CN201920312720U CN210185569U CN 210185569 U CN210185569 U CN 210185569U CN 201920312720 U CN201920312720 U CN 201920312720U CN 210185569 U CN210185569 U CN 210185569U
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Abstract
The application discloses wearable equipment, which comprises a wearable equipment body, a fixing band detachably connected with the wearable equipment body, a light receiver, a microprocessor and a light-emitting component, wherein the light-emitting component is arranged on one side surface of the fixing band, which is in contact with the skin of a human body, in a designated manner and is used for generating one or more light signals; the optical receiver is arranged at the bottom of the wearable device body and used for receiving one or more optical signals transmitted through the skin of a human body and outputting an electric signal to the microprocessor. The wearable device can realize transmission type optical detection.
Description
Technical Field
The application relates to the technical field of wearable equipment, in particular to wearable equipment.
Background
Due to the position layout relationship between the light emitting device and the light receiving device, most wearable devices (such as smart bracelets) on the market at present adopt a reflection-type photoelectric method (i.e. reflection-type optical detection) to monitor physiological information (such as heart rate) of a human body, while transmission-type optical detection (such as blood oxygen detection) is difficult to realize on the wearable devices.
Therefore, how to implement transmissive optical detection on a wearable device is a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
It is a primary object of the present application to provide a wearable device that can implement transmissive optical detection.
The application provides a wearable device, which comprises a wearable device body, a fixing belt detachably connected with the wearable device body, a light receiver, a microprocessor and a light-emitting component, wherein,
the light-emitting component is arranged on one side surface of the fixing band, which is contacted with the skin of a human body, in a designated mode and is used for generating one or more light signals;
the optical receiver is arranged at the bottom of the wearable device body and used for receiving one or more optical signals transmitted through the skin of a human body and outputting an electric signal to the microprocessor.
Further, the light emitting assembly includes at least two light emitters having different fixed light emitting angles, the light emitters being sequentially arranged along a length direction of the fixing tape with a designated interval therebetween.
Further, the light emitting angle of the light emitter includes 5 ° to 20 °.
Further, the wearable device further comprises a controller, wherein the controller is connected with the light-emitting assembly and is used for controlling the light-emitting operation of the light-emitting assembly.
Further, the light emitting assembly includes at least one first light emitter having a variable light emitting angle.
Further, the light emitting assembly comprises at least one first light emitter and at least one second light emitter with a fixed light emitting angle, the first light emitter and the second light emitter are sequentially arranged along the length direction of the fixing strip, and a designated interval exists between the first light emitter and the second light emitter.
Further, the first light emitter comprises a light source and an angle adjuster, and the controller is respectively connected with the light source and the angle adjuster; the angle adjuster is arranged opposite to the light source and used for adjusting the light-emitting angle of the light source.
Further, the angle adjuster includes one of a liquid lens and a variable focal length microlens.
Further, the fixed band includes first fixed band and second fixed band, and the wearable equipment body can be dismantled with the one end of first fixed band and the one end of second fixed band respectively and be connected, and the light receiver is close to the junction setting of wearable equipment body and first fixed band, and light-emitting component sets up on one side surface of first fixed band and human skin contact.
Further, wearable equipment is intelligent wrist-watch or intelligent bracelet, and wearable equipment body is the dial plate, and the fixed band is the watchband.
Further, the wearable device further comprises a pressure sensor, and the pressure sensor is connected with the controller and used for detecting the pressure between the wearable device and the skin of the human body.
Further, the wearable device further comprises an operational amplifier, an analog-to-digital converter and a display, the optical receiver is connected with the operational amplifier through the controller, the operational amplifier is connected with the microprocessor through the analog-to-digital converter, and the display is connected with the microprocessor.
The beneficial effect of this application is: the wearable equipment that this application provided is through the light emitting component overall arrangement that will send one or more light signal on the fixed band, with the light receiver overall arrangement on the bottom of wearable equipment body simultaneously for the adaptable different users of light emitting component and light receiver's position overall arrangement, the light signal that has guaranteed that light emitting component launches can reach the light receiver through hand muscle, and then can carry out optical detection according to the light signal that receives, thereby realized transmissive optical detection on wearable equipment.
Drawings
FIG. 1 is a schematic diagram of a wearable device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of the structure of a wearable device in another embodiment of the present application;
FIG. 3 is a schematic view of a wearable device in an embodiment of the present application when the wrist is large or the wearing is loose;
FIG. 4 is a schematic diagram of a wearable device in another embodiment of the present application, when the wrist is small or worn tightly;
FIG. 5 is a schematic view of a wearable device in an embodiment of the present application after deployment;
fig. 6 is a flowchart illustrating a method for detecting physiological information of a human body by using a wearable device in an implementation of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, the embodiment of the present application provides a wearable device, including a wearable device body 1, a fixing band 2 detachably connected to the wearable device body 1, a light receiver 4, a microprocessor 5, and a light emitting component 3, wherein the light emitting component 3 is disposed on a side surface of the fixing band 2 contacting with the skin of a human body in a designated manner, and is configured to generate one or more light signals; the optical receiver 4 is disposed at the bottom of the wearable device body 1, and is configured to receive one or more optical signals transmitted through the skin of the human body and output an electrical signal to the microprocessor 5.
In this embodiment, the wearable device is a smart watch or a smart bracelet, the wearable device body is a watch face, the fixing band is a watchband, the optical signal generated by the light emitting component 3 is one or more of a red light signal, a green light signal and an infrared light signal, and the type of the optical signal depends on the actual use requirement, for example, for heart rate detection, the green light signal needs to be used, and for blood oxygen saturation detection, the red light signal and the infrared light signal need to be used, so generally, in order to meet different use requirements and obtain more physiological information, the light emitting component 3 may integrate light emitting diodes of multiple color types, such as a green light LED, a red light LED, an infrared light LED, and the like; the optical receiver 4 is an electronic device capable of converting an optical signal into an electrical signal, such as a photodiode or a phototransistor; the specific position of the light-emitting component 3 on the fixing band 2 and the specific position of the light receiver 4 on the bottom of the wearable device body 1 are not particularly limited, as long as at least one of the light signals generated by the light-emitting component 3 can reach the light receiver 4; specifically, the working principle of the wearable device is as follows:
after the light emitting component 3 is started, the light emitting component 3 generates one or more optical signals, the optical signals are transmitted through the skin of the human body and then scattered to the light receiver 4, wherein, because the wrist size and the wearing tightness of each user are different, the intensity and the number of the optical signals received by the light receiver 4 are different, for example, some optical signals cannot reach the light receiver 4 or only partially reach the light receiver 4 due to the obstruction of the arm bone 12, after the light receiver 4 receives the optical signals from the light emitting component 3, the light receiver 4 converts the optical signals into electrical signals and transmits the electrical signals to the microprocessor 5 for processing, thereby realizing the transmission type optical detection, and obtaining the human body physiological information such as heart rate, blood pressure, blood oxygen saturation, blood red blood cell amount and blood flow rate, and the like, it should be noted here that, for the microprocessor 5, the mature products on the market can be adopted, the data processing process of the mature products is realized by using the common programs carried by the mature products, and the data processing process can be realized without depending on a new program, for example, when the microprocessor 5 receives a plurality of electric signals, in order to improve the accuracy and reliability of detection, the microprocessor 5 can select the electric signal with the highest signal-to-noise ratio from the plurality of electric signals, and select the electric signal with the highest signal-to-noise ratio to extract and analyze the physiological information of the human body; in specific implementation, the microprocessor 5 of STM32 series, MTK series and the like can be adopted.
In this embodiment, the wearable device arranges the light emitting component 3 capable of emitting one or more light signals on the fixing band 2, and arranges the light receiver 4 on the bottom of the wearable device body 1, so that the position arrangement of the light emitting component 3 and the light receiver 4 can adapt to different users, the light signals emitted by the light emitting component 3 can reach the light receiver 4 through the hand muscles 11, and then the optical detection can be performed according to the received light signals, thereby realizing the transmission-type optical detection on the wearable device.
Referring to fig. 2 to 4, in an alternative embodiment, the light emitting assembly 3 includes at least two light emitters having different fixed light emitting angles, the light emitters being sequentially arranged along the length direction of the fixing strip 2 with a designated interval therebetween.
In the present embodiment, a general light emitting diode may be adopted as the light emitter, wherein the light emitting angle of the light emitter includes 5 ° to 20 °, for example, the light emitting angle of some light emitters may be 5 °, the light emitting angle of some light emitters may be 10 °, the light emitting angle of some light emitters may be 15 °, and so on; since the fixing band 2 is bent when the wearable device is worn, it is ensured that the optical signal can be scattered to the optical receiver 4 to adapt to the wearing conditions of wrists with different sizes and tightness, therefore, the light emitters having different light emitting angles may be sequentially arranged along the length direction of the fixing band 2, and thus, when the size of the wrist changes or the tightness of wearing changes, which causes that some light signals originally received by the light receiver 4 can not reach the light receiver 4, the light signals generated by other light emitters can be used as 'compensation', thereby ensuring that transmissive optical detection is not rendered impractical by the unavailability of part of the light signal generated by the light emitter, in addition, designated intervals exist among the light emitters, so that the influence of large interference among optical signals on the accuracy and reliability of detection can be avoided.
Referring to fig. 2, in a preferred embodiment, the wearable device further includes a controller 6, the controller 6 is connected to the light emitting component 3 for controlling the light emitting operation of the light emitting component 3, wherein the controller 6 and the light emitting component 3 can be in communication connection through a wired or wireless manner (such as bluetooth), so that the light emitting operation of the light emitting component 3 can be intelligently controlled by adding the controller 6, for example, after the wearable device is worn on the wrist, a user can select physiological information to be measured by performing a relevant touch operation on the wearable device, when the controller 6 receives a relevant instruction generated by the user through the touch operation, the controller 6 controls the light emitting component 3 to be activated, so that the user can perform a transmissive optical detection by activating the light emitting component 3 at any time according to the actual use requirement, the physiological information of the wearable device is obtained, so that the flexibility of the wearable device in use is improved, wherein the controller 6 may adopt a microcontroller of a model number STM32L series (a specific model number is STM32L496AG I6, etc.), and of course, microcontrollers of other models may also be adopted as the controller 6, as long as the use requirement can be met, and no specific limitation is made on the use requirement.
Referring to fig. 2 to 4, in another alternative embodiment, the light emitting assembly 3 includes at least one first light emitter with a variable light emitting angle, the light receiver 4 is connected to the microprocessor 5 through the controller 6, and the controller 6 is specifically configured to control the light emitting angle of the first light emitter when detecting that one or more electrical signals output by the light receiver 4 do not meet the detection requirement (e.g., the electrical signal is too weak, or the signal-to-noise ratio of the electrical signal is too low), so that when the light signal initially emitted by the first light emitter cannot reach the light receiver 4 due to the obstruction of the arm bone 12 or only partially reaches the light receiver 4, the improvement can be performed by changing the light emitting angle of the first light emitter, so that one first light emitter with a variable light emitting angle can function as multiple light emitters with fixed light emitting angles, thereby facilitating the reduction of hardware investment, the processing cost of the fixing band 2 is reduced, and here, as long as the position of the optical receiver 4 on the wearable device body 1 and the position layout of the first light emitter are sufficiently suitable, the first light emitter only needs to be provided with one, and the generated optical signal can be ensured to reach the optical receiver 4 by changing the light emitting angle.
Referring to fig. 2 to 4, in another alternative embodiment, the light emitting assembly 3 includes at least one first light emitter and at least one second light emitter having a fixed light emitting angle, the first light emitter and the second light emitter are sequentially arranged along the length direction of the fixing tape 2, and a designated interval exists between the first light emitter and the second light emitter.
In this embodiment, a general light emitting diode can be used as the second light emitter, wherein the light emitting angle of the second light emitter includes 5 ° to 20 °, and since the fastening band 2 is bent when the wearable device is worn, it is ensured that the optical signal can be scattered to the optical receiver 4 in order to adapt to the wearing conditions of wrists of different sizes and tightness, and therefore the first light emitter and the second light emitter can be sequentially arranged along the length direction of the fastening band 2, so that when the optical signal generated by the first light emitter or the second light emitter cannot reach the optical receiver 4 due to the change of the size of the wrist or the tightness of the wearing, the first light emitter and the second light emitter can perform optical "compensation" mutually, thereby ensuring that the transmissive optical detection cannot be realized due to the unavailability of the optical signal generated by the first light emitter or the second light emitter, in addition, since the hardware cost of the first illuminator is generally higher than that of the second illuminator, in this embodiment, the transmissive optical detection is realized by the first illuminator and the second illuminator in a matching manner, and the input cost of hardware and the processing cost of the fixing band 2 are considered at the same time.
In an alternative embodiment, the first light emitter comprises a light source (not shown) and an angle adjuster (not shown), and the controller 6 is connected to the light source and the angle adjuster; the angle adjuster is arranged opposite to the light source and used for adjusting the light-emitting angle of the light source; among them, the angle adjuster includes one of a liquid lens using an electrowetting cell, and a variable focal length microlens of a liquid crystal, and a detailed description thereof is omitted since the structures of the liquid lens and the variable focal length microlens are well known.
In the present embodiment, specifically, when one or more electrical signals output by the optical receiver 4 do not meet the requirement of detection (e.g. the intensity of the electrical signal is too weak, or the signal-to-noise ratio of the electrical signal is too low), the controller 6 controls the angle adjuster to adjust the light-emitting angle of the light source, so that the light-emitting angle of the first light emitter is variable.
Referring to fig. 1 and 5, in an alternative embodiment, the fixing band 2 includes a first fixing band 212 and a second fixing band 222, the wearable device body 1 is detachably connected to one end of the first fixing band 212 and one end of the second fixing band 222, the light receiver 4 is disposed near a connection between the wearable device body 1 and the first fixing band 212, and the light emitting component 3 is disposed on a side surface of the first fixing band 212 contacting with the skin of the human body.
In this implementation, because the wrist of each user is of different size, the elasticity condition of wearing is also different, therefore if the position of light emitting component 3 on fixed band 2 is too middle, the light signal that light emitting component 3 produced may meet arm bone 12 and can't penetrate, consequently can be close to wearable equipment body 1 with the junction setting of first fixed band 212 with light receiver 4, light emitting component 3 sets up on one side surface that first fixed band 212 and human skin contact, so, can make one or more light signals that light emitting component 3 produced can avoid arm bone 12 to the greatest extent and reach light receiver 4, thereby be favorable to reducing the quantity of the last illuminator of light emitting component 3, practice thrift the input cost of hardware.
Referring to fig. 2, in an alternative embodiment, the wearable device further comprises a pressure sensor 7, and the pressure sensor 7 is connected to the controller 6 for detecting the pressure between the wearable device and the skin of the human body.
In this embodiment, preferably, pressure sensor 7 sets up on the bottom of wearable equipment body 1, is favorable to detecting the pressure between wearable equipment and the human skin like this, specifically, when the pressure value that pressure sensor 7 detected reached preset pressure threshold, then indicates that wearable equipment is in the wearing state, and at this moment, accessible controller 6 control light emitting component 3 starts, and then carries out transmissive optical detection, obtains human physiological information to avoid manual operation's trouble, improve user experience.
Referring to fig. 2, in an alternative embodiment, the wearable device further includes an operational amplifier 8, an analog-to-digital converter 9, and a display 10, the light receiver 4 is connected to the operational amplifier 8 through the controller 6, the operational amplifier 8 is connected to the microprocessor 5 through the analog-to-digital converter 9, the display 10 is connected to the microprocessor 5, the operational amplifier 8 is connected to the analog-to-digital converter 9, the light receiver 4 is connected to the analog-to-digital converter 9, the display 10 is connected to the microprocessor 5, and the microprocessor 5 is connected to the analog-to-.
In this embodiment, specifically, the optical transceiver converts the optical signal from the light emitting module 3 into an electrical signal and transmits the electrical signal to the controller 6, the controller 6 transmits the electrical signal meeting the detection requirement to the operational amplifier 8 for amplification, and the analog-to-digital converter 9 converts the amplified electrical signal into a digital signal, so that the microprocessor 5 processes the digital signal and transmits the processed digital signal to the display 10 for display, thereby enabling the user to obtain the physiological information of the user.
With reference to fig. 2 and fig. 6, an embodiment of the present application further provides a method for detecting physiological information of a human body, which is applied to the wearable device, and the method includes:
s1, activating the light emitting assembly 3 by the controller 6 in a predetermined manner to illuminate the human skin with one or more light signals emitted by the light emitting assembly 3;
s2, receiving one or more optical signals transmitted through the skin of the human body by the optical receiver 4, and converting the optical signals into electrical signals;
s3, the microprocessor 5 processes the electrical signal to obtain physiological information of the human body.
In the above S1, in use, the controller 6 may activate the light emitting assembly 3, and then control the light emitting assembly 3 to emit one or more light signals according to a predetermined manner.
In the above S2, specifically, after the controller 6 activates the light emitting device 3, one or more optical signals transmitted through the skin of the human body can be received by the optical receiver 4, wherein the wrist size and wearing tightness of each user are different, so the intensity and quantity of the optical signals received by the optical receiver 4 are different, for example, some optical signals are blocked by the arm bone 12 and cannot reach the optical receiver 4 or only partially reach the optical receiver 4, and when the optical receiver 4 receives the optical signals from the light emitting device 3, the optical receiver 4 converts the optical signals into electrical signals and transmits the electrical signals to the microprocessor 5.
In S3, the physiological information includes one or more of heart rate, blood pressure, blood oxygen saturation, blood red blood cell amount and blood flow rate, wherein the process of obtaining the physiological information of the human body by processing the electrical signal through the microprocessor 5 is well known in the art and will not be described herein.
In this embodiment, the method for detecting human physiological information controls the light emitting component 3 arranged on the fixing band 2 to generate one or more light signals to irradiate human skin through the controller 6, and then receives the one or more light signals transmitted through the human skin through the light receiver 4 arranged on the bottom of the wearable device body 1, converts the light signals into electric signals, and processes the electric signals through the microprocessor 5 to obtain human physiological information, so that the wearable device detects the human physiological information in a transmission mode.
In an alternative embodiment, when the light emitting assembly 3 comprises at least two light emitters having different fixed light emitting angles, the step of activating the light emitting assembly 3 by the controller 6 in a predetermined manner comprises:
s11, the respective light emitters are sequentially turned on by the controller 6 at predetermined intervals.
In this embodiment, the predetermined time may be 0.5 second, 1 second, 1.5 second, etc., and the predetermined time is not specifically limited to this, and each light emitter is sequentially turned on in a manner of interval predetermined time, so that the time for each light signal to reach the light receiver 4 is different, and thus the influence on the accuracy of optical detection due to mutual interference between the light signals can be avoided, and the accuracy of human physiological information detection can be improved.
Referring to fig. 2 and 6, in an alternative embodiment, when the light emitting assembly 3 includes at least two light emitters with different fixed light emitting angles, the step of receiving one or more light signals transmitted through the skin of the human body by the light receiver 4 and converting the light signals into electrical signals further includes:
s201, receiving a plurality of electric signals output by the optical receiver 4 through the controller 6, and selecting the electric signal optical receiver 4 with the highest signal intensity from the plurality of electric signals;
s202, the electrical signal with the highest signal intensity is transmitted to the microprocessor 5.
In this embodiment, since the light emitters are relatively close to each other, the signal noise factor can be ignored, and therefore, the electrical signal with the highest signal intensity is selected from the plurality of electrical signals, which does not affect the accuracy of the optical detection, and the process of calculating the signal-to-noise ratio in the prior art can be omitted, thereby being beneficial to improving the efficiency of the optical detection of the optical receiver 4.
Referring to fig. 2, 3, 4 and 6, in another alternative embodiment, when the light emitting assembly 3 includes at least two light emitters with different fixed light emitting angles, after the steps of receiving one or more light signals transmitted through the skin of the human body by the light receiver 4 and converting the light signals into electrical signals, the method further includes:
s211, receiving an electrical signal output by the optical receiver 4 through the controller 6, and determining whether the signal intensity of the current electrical signal reaches a preset threshold of the optical receiver 4;
if the signal intensity of the current electrical signal reaches the preset threshold, S212 is executed, the current electrical signal is transmitted to the microprocessor 5, and the controller 6 stops turning on the rest of the light emitter controllers 6.
If the signal intensity of the current electrical signal does not reach the preset threshold, S213 is executed to turn off the light emitter currently in the on state through the controller 6, and turn on the remaining light emitters in sequence until the signal intensity of the electrical signal corresponding to one of the light emitters reaches the preset threshold.
In the above S211, specifically, the controller 6 of the optical receiver 4 controls the light emitters to be sequentially turned on at predetermined intervals, when the controller 6 receives an electrical signal corresponding to a certain light emitter (that is, an optical signal emitted by a certain light emitter is received by the optical receiver 4 and converted into an electrical signal, and then transmitted to the controller 6 by the optical receiver 4), it is first determined whether the signal intensity of the electrical signal reaches a preset threshold value by the controller 6, and if the signal intensity of the electrical signal reaches the preset threshold value, it indicates that the electrical signal meets the requirement of detection, and the electrical signal can be transmitted to the microprocessor 5 for processing.
In the above S212, when the signal intensity of the electrical signal corresponding to a certain light emitter reaches the preset threshold, the electrical signal may be directly transmitted to the microprocessor 5 for processing, and other light emitters do not need to be turned on again, for example, if three light emitters are provided on the fixing band 2, when the second light emitter is turned on, the signal intensity of the electrical signal corresponding to the second light emitter reaches the preset threshold, and then the third light emitter does not need to be turned on again, so that the accuracy of the optical detection can be ensured, and the purpose of saving power can be achieved.
In the above S213, if the signal intensity of the electrical signal corresponding to a certain light emitter does not reach the preset threshold, it indicates that the electrical signal does not meet the detection requirement, the light emitter currently in the on state is turned off by the controller 6, and the other light emitters are sequentially turned on until the signal intensity of the electrical signal corresponding to one of the light emitters reaches the preset threshold, for example, if three light emitters are provided on the fixing band 2, the three light emitters are sequentially turned on at predetermined time intervals, when the first light emitter is turned on, the signal intensity of the electrical signal corresponding to the first light emitter does not reach the preset threshold, the first light emitter is turned off while the second light emitter is continuously turned on, and if the signal intensity of the electrical signal corresponding to the second light emitter does not reach the preset threshold, the second light emitter is turned off while the third light emitter is continuously turned on, assuming that the signal intensity of the electrical signal corresponding to the third light emitter reaches the preset threshold, the controller 6 keeps the third light emitter turned on, and transmits the electrical signal corresponding to the third light emitter to the microprocessor 5 for processing, so that the accuracy of optical detection can be ensured, and the purpose of saving power can be achieved.
Referring to fig. 2, 3 and 6, in another alternative embodiment, when the light emitting assembly 3 includes at least one first light emitter with a variable light emitting angle, after the steps of receiving one or more light signals transmitted through the skin of the human body by the light receiver 4 and converting the light signals into electrical signals, the method further includes:
s221, receiving an electrical signal output by the optical receiver 4 through the controller 6, and determining whether the signal intensity of the electrical signal reaches a preset threshold, where the electrical signal corresponds to the first light emitter optical receiver 4 that is turned on earliest;
if the signal intensity of the electrical signal does not reach the preset threshold, S222 is executed, and the controller 6 controls the light emitting angle of the first light emitter until the signal intensity of the electrical signal reaches the preset threshold.
If the signal intensity of the electrical signal reaches the preset threshold, S223 is executed to transmit the electrical signal to the microprocessor 5.
In this embodiment, specifically, it is assumed that three first light emitters are disposed on the fixing band 2, the three first light emitters are sequentially turned on at predetermined time intervals, when the first light emitter is turned on (i.e. the first light emitter turned on earliest), if the signal intensity of the electrical signal corresponding to the first light emitter reaches the preset threshold at the beginning, the electrical signal can be directly transmitted to the microprocessor 5 for processing, without turning on the other first light emitters, and if the signal intensity of the electrical signal corresponding to the first light emitter does not reach the preset threshold at the beginning, the light emitting angle of the first light emitter can be controlled by the controller 6 until the signal intensity of the electrical signal corresponding to the first light emitter reaches the preset threshold, so that the other first light emitters do not need to be turned on again, and the purpose of saving power is achieved, thus, when the light signal initially emitted by the first light emitter which is turned on earliest is blocked by the arm bone 12 and cannot reach the light receiver 4 or only partially reaches the light receiver 4, the improvement can be performed by changing the light emitting angle of the first light emitter, so that one first light emitter with a variable light emitting angle can play the same role as a plurality of light emitters with fixed light emitting angles, thereby being beneficial to reducing the investment of hardware and reducing the processing cost of the fixing band 2.
Referring to fig. 2, 3, 4 and 6, in another alternative embodiment, when the light emitting assembly 3 includes at least one first light emitter and at least one second light emitter having a fixed light emitting angle, the step of controlling the light emitting angle of the first light emitter by the controller 6 until the signal intensity of the electrical signal reaches the preset threshold further includes:
s224, judging whether the signal intensity of the electric signal in the preset time period reaches a preset threshold value through the controller 6;
if the signal intensity of the electrical signal in the preset time period does not reach the preset threshold, S225 is executed, the first light emitter which is turned on earliest is turned off through the controller 6, and the second light emitter or the other first light emitters are sequentially turned on until the signal intensity of the electrical signal corresponding to one of the first light emitters or the second light emitter reaches the preset threshold.
In this embodiment, specifically, it is assumed that the fixing band 2 is provided with a first light emitter and two second light emitters, an interval exists between the first light emitter and the second light emitter, and an interval exists between the two second light emitters, the first light emitter and the second light emitter are sequentially turned on at a predetermined time (assuming that the predetermined time is 1 second), when the first light emitter is turned on, if the signal intensity of the electrical signal corresponding to the first light emitter at the initial time reaches a preset threshold, the electrical signal can be directly transmitted to the microprocessor 5 for processing without turning on the remaining second light emitters, and if the signal intensity of the electrical signal corresponding to the first light emitter at the initial time does not reach the preset threshold, the light emitting angle of the first light emitter can be controlled by the controller 6 until the signal intensity of the electrical signal corresponding to the first light emitter reaches the preset threshold, therefore, the remaining second light emitters do not need to be turned on again to achieve the purpose of saving power, and if the first light emitter cannot make the signal intensity of the corresponding electrical signal reach the preset threshold value by changing the light emitting angle within a preset time period (e.g., within 1 second), the first light emitter can be turned off by the controller 6 at this time, and the other two second light emitters are sequentially turned on until the signal intensity of the electrical signal corresponding to one of the second light emitters reaches the preset threshold value, so that the first light emitter and the second light emitter can perform "compensation" of light mutually, and it is ensured that the transmissive optical detection cannot be realized because the optical signal generated by the second light emitter is unavailable, and in addition, since the hardware cost of the first light emitter is generally higher than that of the second light emitter, in the present embodiment, the transmissive optical detection is realized by the first light emitter and the second light emitter in a matching manner, meanwhile, the input cost of hardware and the processing cost of the fixing belt 2 are considered.
In an optional embodiment, the method for detecting physiological information of a human body further includes:
s101, receiving a starting instruction input by a user through the controller 6, and executing the step of starting the light-emitting component 3 according to a preset mode according to the starting instruction.
In this embodiment, after the wearable device is worn on the wrist, the user can select physiological information to be measured by performing a related touch operation on the wearable device, and when the controller 6 receives a start instruction generated by the user through the touch operation, the controller 6 controls the light emitting assembly 3 to start, so that the user can perform transmission-type optical detection by starting the light emitting assembly 3 at any time according to actual use needs to obtain physiological information of the user, thereby improving the flexibility of the wearable device in use.
Referring to fig. 2 and 6, in another alternative embodiment, the method for detecting physiological information of a human body further includes:
s111, acquiring a pressure value detected by the pressure sensor 7 through the controller 6, and judging whether the pressure value exceeds a preset pressure threshold value;
if the pressure value exceeds the preset pressure threshold, the step S1 is executed to activate the light emitting assembly 3 according to the predetermined manner.
In this embodiment, preferably, pressure sensor 7 sets up on the bottom of wearable equipment body 1, is favorable to detecting the pressure between wearable equipment and the human skin like this, specifically, when the pressure value that pressure sensor 7 detected reached preset pressure threshold, then indicates that wearable equipment is in the wearing state, and at this moment, accessible controller 6 control light emitting component 3 starts, and then carries out transmissive optical detection, obtains human physiological information to avoid manual operation's trouble, improve user experience.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A wearable device is characterized by comprising a wearable device body, a fixing belt detachably connected with the wearable device body, a light receiver, a microprocessor and a light-emitting component, wherein,
the light-emitting component is arranged on one side surface of the fixing band, which is in contact with the skin of a human body, in a designated mode and is used for generating one or more light signals;
the optical receiver is arranged at the bottom of the wearable device body and used for receiving one or more optical signals transmitted through the human skin and outputting electric signals to the microprocessor.
2. The wearable device according to claim 1, wherein the light emitting assembly comprises at least two light emitters having different fixed light emitting angles, each light emitter being arranged in sequence along a length direction of the fixing band with a designated interval therebetween.
3. The wearable device of claim 2, wherein the light emitting angle of the light emitter comprises 5 ° to 20 °.
4. The wearable device of claim 1, further comprising a controller coupled to the light emitting assembly for controlling the light emitting operation of the light emitting assembly.
5. The wearable device of claim 4, wherein the light emitting assembly comprises at least one first light emitter having a variable light emitting angle.
6. The wearable device according to claim 5, wherein the light emitting assembly comprises at least one first light emitter and at least one second light emitter with a fixed light emitting angle, the first light emitter and the second light emitter are arranged in sequence along the length direction of the fixing band, and a specified interval exists between the first light emitter and the second light emitter.
7. The wearable device according to claim 5, wherein the first light emitter comprises a light source and an angle adjuster, and the controller is connected with the light source and the angle adjuster respectively; the angle adjuster is arranged opposite to the light source and used for adjusting the light-emitting angle of the light source.
8. The wearable device of claim 7, wherein the angle adjuster comprises one of a liquid lens, a variable focus microlens.
9. The wearable device according to any one of claims 1 to 8, wherein the fixing band comprises a first fixing band and a second fixing band, the wearable device body is detachably connected to one end of the first fixing band and one end of the second fixing band, the light receiver is disposed near a connection between the wearable device body and the first fixing band, and the light emitting component is disposed on a side surface of the first fixing band contacting with the skin of the human body.
10. The wearable device according to any one of claims 1 to 8, wherein the wearable device is a smart watch or a smart bracelet, the wearable device body is a watch face, and the securing strap is a watch band.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920312720.XU CN210185569U (en) | 2019-03-12 | 2019-03-12 | Wearable device |
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| CN201920312720.XU CN210185569U (en) | 2019-03-12 | 2019-03-12 | Wearable device |
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| CN210185569U true CN210185569U (en) | 2020-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305331A (en) * | 2021-12-01 | 2022-04-12 | 安徽华米信息科技有限公司 | Method, device and equipment for collecting physiological parameters |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305331A (en) * | 2021-12-01 | 2022-04-12 | 安徽华米信息科技有限公司 | Method, device and equipment for collecting physiological parameters |
| CN114305331B (en) * | 2021-12-01 | 2024-03-19 | 安徽华米信息科技有限公司 | Method, device and equipment for collecting physiological parameters |
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