WO2020228737A1 - 一种智能穿戴设备 - Google Patents

一种智能穿戴设备 Download PDF

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Publication number
WO2020228737A1
WO2020228737A1 PCT/CN2020/090019 CN2020090019W WO2020228737A1 WO 2020228737 A1 WO2020228737 A1 WO 2020228737A1 CN 2020090019 W CN2020090019 W CN 2020090019W WO 2020228737 A1 WO2020228737 A1 WO 2020228737A1
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WO
WIPO (PCT)
Prior art keywords
light
generator
packaging structure
wearable device
transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/090019
Other languages
English (en)
French (fr)
Inventor
姚雨良
郭智
王乐
鹿楠
杨荣广
席毅
孙士友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP20806592.0A priority Critical patent/EP3949849A4/en
Priority to US17/610,964 priority patent/US20220218219A1/en
Priority to JP2021567927A priority patent/JP2022532603A/ja
Publication of WO2020228737A1 publication Critical patent/WO2020228737A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02416—Measuring pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A61B5/02427—Details of sensor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02438—Measuring pulse rate or heart rate with portable devices, e.g. worn by the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient; User input means
    • A61B5/742—Details of notification to user or communication with user or patient; User input means using visual displays
    • A61B5/7445—Display arrangements, e.g. multiple display units
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/18—Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
    • A61B2562/185—Optical shielding, e.g. baffles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/681—Wristwatch-type devices

Definitions

  • This application relates to the technical field of communication devices, and in particular to a smart wearable device.
  • Heart rate monitoring components are the most important detection components in wearable devices. There are more and more application scenarios that require 24-hour real-time monitoring.
  • PPG photoplethysmography
  • This method of monitoring heart rate is based on the principle of light absorption by substances, that is, the light-emitting diode (LED) of the smart wearable device is combined with the photodiode (PD) to irradiate the blood vessel for a period of time, according to the absorbance of the blood.
  • Measure heart rate Specifically, when the light beam of a certain wavelength emitted by the LED irradiates the skin surface, the light beam will be transmitted to the PD through transmission or reflection.
  • the PD monitors the light intensity Will weaken.
  • the human skin, bones, meat, fat, etc. reflect light to a fixed value, while the capillaries and arteries and veins are constantly increasing and decreasing with the pulse volume under the action of the heart.
  • the peripheral blood volume is the largest, the light absorption is the largest, and the light intensity detected by the PD is the smallest.
  • the light intensity detected by the PD is the largest, which makes the light intensity received by the PD appear accordingly. Pulsating changes.
  • the reflection type photoelectric method is the most commonly used method for detecting heart rate.
  • the reflection type photoelectric method is that the light-emitting diode and the photodiode are located on the same side of the measured part, and the reflected light is mainly measured.
  • the advantage of this method of measuring heart rate is that it is very simple and has low requirements on the measurement site. As long as the tissue is relatively smooth and there is less subcutaneous fat, it can almost be measured, such as the forehead and wrist. Therefore, most smart wearable devices such as smart bracelets and smart watches use this method to measure heart rate.
  • the smart wearable device capable of detecting heart rate.
  • the smart wearable device includes a display screen and a rear case arranged oppositely. Referring to FIG. 1, it also includes light-emitting diodes 001, A photodiode 003 arranged in parallel with the light emitting diode 001 and both mounted on the same circuit board 006.
  • a shielding structure 005 for blocking the light emitted by the light emitting diode 001 from directly irradiating the photodiode 003 is arranged between the light emitting diode 001 and the photodiode 003
  • the side of the light emitting diode 001 and the photodiode 003 opposite to the measured part is provided with corresponding LED lens 002 and PD lens 004.
  • the LED lens 002 is generally embedded in the opening of the rear case. Due to the assembly process requirements, the light emitting diode 001 and There is a gap between the LED lenses 002.
  • the light emitted by the light-emitting diode 001 enters the dermis D and the subcutaneous tissue layer H through the epidermal layer E through the LED lens 002, and the light passes through the surface capillary s and subcutaneous tissue layer H in the dermis D After reflection from the inner deep capillary p, it is received by the photodiode 003 through the PD lens 004.
  • the thickness of the LED lens 002 is usually about 0.8mm, and the distance between the LED 001 and the LED lens 002 is about 0.3mm, which causes the light emitted by the LED 001 to penetrate the thicker LED lens 002.
  • the embodiments of the present application provide a smart wearable device, the main purpose of which is to provide a device that can increase the transmittance of the light emitted by the light generator and reduce the energy consumption of the light emitted by the light generator when it is transmitted to the measured part. Improve the battery life of smart wearable devices.
  • the present application provides a smart wearable device, including a display screen and a rear case that is fastened to the display screen, and further includes: a light generator and a light receiver, the light generator and the light receiver
  • the device is arranged in the mounting cavity formed by the engagement of the display screen and the rear case, the light generator is used to emit light toward the outside of the rear case, and the light receiver is used to receive light transmitted from the outside of the rear case.
  • the light generator is arranged on a first control board, the light receiver is arranged on a second control board, and the light generator is arranged close to the rear housing relative to the light receiver.
  • the light generator is arranged on the first control board, the light receiver is arranged on the second control board, and the light generator is arranged close to the rear shell relative to the light receiver, so that the light
  • the path of the light is shortened compared with the path of the light in the prior art, which improves the transmittance of the light emitted by the light generator, thereby reducing the light
  • the light loss consumed during the irradiation process improves the battery life of the entire smart wearable device, and ultimately improves the performance of the entire smart wearable device.
  • the first aspect further includes a packaging structure for packaging the light generator, a placement cavity is formed in the packaging structure, the light generator is disposed in the placement cavity, and the packaging
  • the surface of the structure opposite to the light-emitting surface of the light generator is a light-transmitting surface, and the light-transmitting surface of the packaging structure is installed at an opening opened on the rear shell.
  • the light-emitting surface of the light generator is attached to the light-transmitting surface.
  • the light-emitting surface of the light generator By attaching the light-emitting surface of the light generator to the light-transmitting surface, that is, there is no gap between the light-emitting surface of the light generator and the light-transmitting surface, so that the light emitted by the light generator can be avoided when the light is irradiated on the light-transmitting surface. Reflection phenomenon to further improve light transmittance.
  • a material of the packaging structure is a light-transmitting material
  • a light-shielding structure is provided on a surface of the packaging structure opposite to the light receiver.
  • the light shielding structure can effectively prevent the light emitted by the light generator from being scattered to the light receiver through the encapsulation structure, so that the light receiver directly receives the light emitted by the light generator to form an interference signal and flood the phenomenon of useless signals.
  • the side surface of the packaging structure is a stepped structure.
  • the waterproof path is increased, and the waterproof performance of the entire smart wearable device is improved.
  • the packaging structure for packaging the light generator
  • the packaging structure is made of a light-transmitting material
  • the light emitting surface of the light generator faces the packaging structure
  • the packaging structure is connected to the packaging structure through a light-transmitting adhesive layer, and the packaging structure is installed at an opening opened on the rear shell.
  • the light-transmitting adhesive layer is used to bond the packaging structure to the packaging structure, which ensures that the light generator is close to the rear shell, and thus the light generator is close to the measured part, the connection structure is simple and convenient to implement.
  • the light-transmitting adhesive layer is arranged along the edge of the light-emitting surface of the light generator, and a side wall of the light-transmitting adhesive layer opposite to the light receiver is provided with Shading structure.
  • the light-transmitting adhesive layer is connected to the packaging structure and the light generator, the light-transmitting adhesive layer is laid along the edge of the light-emitting surface of the light generator, and then a light-shielding layer is provided on the sidewall of the light-transmitting adhesive layer opposite to the light receiver Structure, the light-shielding structure effectively prevents the light emitted by the light generator from being scattered to the light receiver through the light-transmitting adhesive layer, so that the light receiver directly receives the light and forms an interference signal, which floods the phenomenon of useless signals.
  • the light shielding structure is a light shielding film layer.
  • the use of the light-shielding film layer as the light-shielding structure not only has a simple structure, is convenient to implement, and has low manufacturing cost.
  • a side of the packaging structure that faces away from the light-emitting surface of the light generator is provided with a unidirectional light transmission structure, and the unidirectional light transmission structure is used to connect the light generator
  • the emitted light passes through the packaging structure and is used to prevent light outside the packaging structure from passing through the packaging structure.
  • the unidirectional light transmission structure ensures that the light emitted by the light generator can be transmitted out, and the internal structure is invisible from the outside, which improves the appearance and aesthetics of the entire smart wearable device.
  • the one-way light-transmitting structure is a one-way light-transmitting film layer disposed on a side of the packaging structure away from the light-emitting surface of the light generator.
  • the one-way light-transmitting film layer is used as the one-way light-transmitting structure, and under the premise that the internal structure cannot be seen from the outside, the structure of the one-way light-transmitting structure is simple and easy to implement.
  • the side of the packaging structure facing away from the light emitting surface of the light generator is a curved surface that curves away from the rear shell.
  • the side of the package structure facing away from the light-emitting surface of the light generator is a curved surface that is curved away from the rear shell, so that the package structure can be more easily attached to the tested part, which will further bring the light generator closer to the tested part to prevent The light irradiated to the measured part is directly reflected, so as to prevent the directly emitted light from interfering with the light absorbed from the measured part, or even flood the useless signal.
  • the packaging structure material is selected from a transparent material such as transparent ceramics, transparent glass, transparent plastics, and transparent gems.
  • the light receiver has a plurality of light receivers, and the plurality of light receivers are arranged in a regular shape, and the light generator is arranged at a position of the light receivers in a regular shape.
  • the center position; or, the light generator has multiple, and the multiple light generators are arranged in a regular shape, and the light receiver is arranged at the center position of the multiple light generators in a regular shape.
  • Figure 1 is a cross-sectional view of a partial structure of a smart wearable device in the prior art
  • Figure 2 is a light path diagram of the light emitted by the smart wearable device at the measured part
  • Figure 3 is a perspective view of a smart wearable device according to an embodiment of the application.
  • Figure 4 is a schematic diagram of the internal structure of Figure 3;
  • FIG. 5 is a perspective view of a package structure according to an embodiment of the application.
  • Figure 6 is another view of Figure 5;
  • FIG. 7 is another perspective view of FIG. 5;
  • Figure 8 is a schematic diagram of the internal structure of Figure 5;
  • FIG. 9 is a schematic diagram of the internal structure of a smart wearable device according to an embodiment of the application.
  • PCB Printed Circuit Board
  • LED Light-Emitting Diode
  • an embodiment of the present application provides a smart wearable device, which includes a display screen 1 and a back shell 2 that is fastened to the display screen 1, and also includes a light generator 3 and a light receiver 5.
  • the light generator 3 and the light receiver 5 are arranged in the mounting cavity formed by the interlocking of the display screen 1 and the rear casing 2.
  • the light generator 3 is used to emit light toward the outside of the rear casing 2
  • the light receiver 5 is used to receive light from the rear casing. 2
  • the light generator 3 is arranged on the first control board (not shown in the figure)
  • the light receiver 5 is arranged on the second control board 7, and the light generator 3 is close to the rear shell relative to the light receiver 5 2 settings.
  • the light generator 3 and the light receiver 5 are respectively arranged on the corresponding first control board and the second control board 7, the light generator 3 is arranged close to the rear housing 2 relative to the light receiver 5, so that the light generator 3 and The distance between the back shell 2 is reduced compared with the prior art, and the distance between the light generator 3 and the measured part is also reduced.
  • the path that the light travels is shorter than the path that the light travels in the prior art, which reduces the light loss consumed by the light during the irradiation process, thereby increasing the transmittance of the light emitted by the light generator 3 and improving the overall smart wearable device Endurance, and the light generator 3 and the light receiver 5 are not located on the same plane, the mutual influence of light beaming is also greatly reduced, and the phenomenon that interferes with and affects the normal reflected signal reception of the light receiver 5 is also reduced. If the smart wearable device With the function of monitoring heart rate, the accuracy of heart rate monitoring can be significantly improved, and ultimately the performance of the entire smart wearable device is improved, and the user experience is improved.
  • the present application also includes a packaging structure 4 for packaging the light generator 3, and the packaging structure 4 is formed with In the placement cavity, the light generator 3 is arranged in the placement cavity, the surface of the packaging structure 4 opposite to the light-emitting surface of the light generator 3 is a light-transmitting surface 401, and the light-transmitting surface 401 of the packaging structure 4 is installed in the opening of the rear housing 2.
  • it further includes a packaging structure 4 for packaging the light generator 3.
  • the material of the packaging structure is a light-transmitting material, and the light-emitting surface of the light generator 3 faces the packaging structure 4 and passes through the light-transmitting material.
  • the glue layer 10 is connected to the packaging structure 4, and the packaging structure 4 is installed at the opening of the rear case 2.
  • this application also includes other packaging structures of the light generator 3.
  • the light emitted by the light generator 3 passes through the light-transmitting surface 401 of the packaging structure 4, and then passes through the rear housing 2 to illuminate the measured part.
  • the packaging structure shown in Figures 3, 4, and 8 since a placement cavity is formed in the packaging structure 4, the light generator 3 is directly arranged in the placement cavity, that is, the light generator 3 is packaged by the packaging structure 4
  • the light generator 3 can be installed in the packaging structure 4 and the latter two become an independent module, and then the module can be installed in the opening of the rear shell 2.
  • This type of packaging Under the premise of ensuring that the light path of the light emitted from the light generator 3 to the measured part is shortened, the packaging structure 4 and the light generator 3 can be integrated together. Compared with the prior art, this eliminates the light generator. 3 and the assembly avoidance gap between the light generator lens.
  • the smart wearable device When the smart wearable device is used as a heart rate detection device, it is necessary that the light emitted by the light generator 3 is irradiated to the measured part so that the light should not be reflected as much as possible (refer to Figure 2, the mark ⁇ in Figure 2 It is a phenomenon of light reflection), because when light is reflected, not only the transmittance is reduced, the reflected light will also become an interference signal, which will affect the reception of useful signals by the light receiver 5. Therefore, in order to improve the accuracy of the smart wearable device to measure the heart rate , The light emitted by the light generator 3 should not be reflected as far as possible during the process of irradiating the measured part.
  • the light emitted by the light generator 3 will have two light reflections during the process of irradiating the measured part.
  • the light emitting surface of the light generator 3 is attached to the light transmitting surface 401, so that when the light emitting surface of the light generator 3 emits The light will directly penetrate the light-transmitting surface 401 without reflection on the light-transmitting surface 401, which not only improves the light transmittance, but also ensures the accuracy of the measurement data.
  • the package structure 4 exposed on the back shell 2
  • the side facing away from the light emitting surface of the light generator 3 is a curved surface that curves away from the rear case 2. Through the curved surface, the package structure 4 can be tightly attached to the measured part, and no reflection phenomenon will occur on the measured part, which not only improves the light transmittance of the light, and prevents the reflected light from interfering with the light entering the light receiver.
  • the surface of the package structure 4 opposite to the light emitting surface of the light generator 3 is a light-transmitting surface to ensure that the light emitted by the light generator 3 is irradiated to the measured part.
  • it is usually directly used as a transparent surface.
  • the light encapsulation structure 4 makes it convenient to obtain materials and correspondingly reduces the cost.
  • the material of the packaging structure 4 can be selected from light-transmitting materials, and the packaging structure 4 can be selected from including but not limited to transparent ceramics, transparent glass, transparent plastic, and transparent sapphire.
  • Fig. 3 When the package structure shown in Fig. 3, Fig. 4, and Fig. 8 is used, although the light generator 3 and the light receiver 5 are not located on the same plane, the influence of light crossover between each other will be greatly reduced, but in order to further prevent the light generator 3 The emitted light escapes to the light receiver 5 and affects the light reception of the light receiver 5.
  • a light-shielding structure is provided on the surface of the overall light-transmitting packaging structure 4 opposite to the light receiver 5.
  • a light-shielding structure By providing a light-shielding structure, the light emitted by the light receiver 5 is prevented from passing through the packaging structure 4 and scattered to the light receiver 5; in addition, a light-shielding structure can also be provided on the surface of the light receiver 5 opposite to the light generator 3, or A light shielding structure is provided between the light generator 3 and the light receiver 5. In short, the light shielding structure that can prevent the light beaming between the light generator 3 and the light receiver 5 is within the protection scope of the present application.
  • the light-shielding structure has multiple implementation modes. For the sake of simple structure and convenient implementation, referring to FIG. 7, the light-shielding structure is a light-shielding film layer 9. In specific implementation, only a light-shielding film layer 9 needs to be coated on the side of the package structure 4 close to the light receiver 5. However, in order to simplify the coating process, a light-shielding film layer can be coated on the entire side of the package structure 4 9.
  • the light-shielding film layer 9 may be a black film layer or other dark film layer.
  • light-shielding structures of other structures can be selected, but the light-shielding film layer 9 is a preferable solution to other light-shielding structures.
  • Smart wearable devices are smart watches, smart bracelets, etc., which are easily exposed to water during use. Therefore, the waterproof performance of smart wearable devices is also a key factor in the performance of smart wearable devices. In order to make smart wearable devices waterproof, The water inlet path is increased to improve the waterproof effect.
  • the side surface of the packaging structure 4 is a stepped structure.
  • the side of the packaging structure is set as a step surface to increase the water inlet path from the outside of the back shell 2 to the inside of the back shell, and the light generator 3 is arranged on the packaging structure 4 It is placed in the cavity and the light generator 3 also plays a protective role. Therefore, the combination of the step structure and the placement cavity effectively improves the waterproof performance of the entire smart wearable device.
  • the light-transmitting surface of the packaging structure 4 is directly embedded on the rear case 2, that is, directly exposed.
  • the side of the packaging structure 4 facing away from the light-emitting surface of the light generator 3 is provided with a unidirectional light transmission structure.
  • the unidirectional light transmission structure is used to transmit the light emitted by the light generator 3 out of the packaging structure 4, and is used to prevent the packaging structure 4External light passes through the package structure 4. This can only ensure that the light generator 3 passes through the packaging structure 4 to irradiate the measured part, but the light generator 3 inside the smart wearable device is not visible from the outside, thereby improving the appearance of the smart wearable device.
  • the unidirectional light-transmitting structure has a variety of structures.
  • the unidirectional light-transmitting structure is a unidirectional light-transmitting film provided on the side of the packaging structure 4 facing away from the light-emitting surface of the light generator 3 Layer 8.
  • the unidirectional light-transmitting film layer 8 is used as a unidirectional light-transmitting structure. In specific operations, it is only necessary to coat a unidirectional light-transmitting film on the side of the packaging structure 4 that faces away from the light-emitting surface of the light generator 3 to form a unidirectional light-transmitting structure. ⁇ 8 ⁇ Film layer 8.
  • other unidirectional light-transmitting structures can be selected, but the unidirectional light-transmitting film layer 8 is a preferred solution relative to other unidirectional light-transmitting structures.
  • the packaging structure 4 has a variety of shapes. In some embodiments, referring to FIG. 5 to FIG. 6, the packaging structure 4 is a revolving body structure; in other embodiments, the packaging structure 4 is a rectangular parallelepiped structure. Of course, it can also be other structures.
  • the application does not limit the specific shape of the package structure, and any shape falls within the protection scope of the application.
  • the packaging structure 4 In order to prevent the light emitted by the light generator 3 from penetrating the packaging structure 4, the packaging structure 4 should be as small as possible under the premise of ensuring its compressive strength.
  • the thickness of the packaging surface of the packaging structure 4 is 0.3mm ⁇ 0.4mm.
  • the thickness of the packaging surface of the packaging structure 4 The thickness is less than 0.3mm, which significantly reduces the thickness compared to the existing 0.8mm package structure, which significantly reduces power consumption.
  • the package structure 4 in this solution is a plate structure, and the light generator 3 is connected to the package structure 4 through the light-transmitting adhesive layer 10.
  • the structure is simple, and the package can be The side of the structure 4 facing the light generator 3 is coated with light-transmitting glue to form a light-transmitting glue layer 10, and then the light generator 3 is adhered to the light-transmitting glue, in order to prevent the light-emitting surface of the light generator 3 and the packaging structure 4 There is a gap between them to cause light reflection.
  • the light generator 3 can be as close as possible to the packaging structure 4, and the gap between the light generator 3 and the packaging structure 4 can be avoided as much as possible to improve The light transmittance will also ensure the accuracy of the measurement data.
  • the material of the packaging structure 4 can be selected from light-transmitting materials
  • the package structure 4 can be selected from the group including but not limited to transparent ceramics, transparent glass, transparent plastic, and transparent sapphire.
  • the side surface of the packaging structure 4 is also designed as a step structure.
  • the side surface of the packaging structure is provided with a step surface to increase the water inlet path from the outside of the rear case 2 to the inside of the rear case.
  • the packaging structure 4 forms part of the structure of the back shell 2 and is also directly exposed. Similarly, in order to improve the appearance of the entire smart wearable device, the packaging structure 4 is away from the light emitting surface of the light generator 3 A one-way light-transmitting structure is provided on the side, and the one-way light-transmitting structure is used to transmit the light emitted by the light generator 3 out of the packaging structure 4 and to prevent light outside the packaging structure 4 from passing through the packaging structure 4.
  • the unidirectional light-transmitting structure is a unidirectional light-transmitting film layer 8 provided on the side of the packaging structure 4 facing away from the light-emitting surface of the light generator 3. In the embodiment shown in FIG.
  • the packaging structure 4 in order to prevent the gap between the package structure 4 and the tested part from causing light reflection, one of the package structure 4 exposed on the rear housing 2 away from the light emitting surface of the light generator 3
  • the side is a curved surface that curves away from the rear shell 2 direction.
  • the packaging structure 4 can be tightly attached to the tested part, and no reflection phenomenon will occur on the tested part, which not only improves the light transmittance of the light, but also prevents the reflected light from interfering with the light entering the light receiver.
  • the light-transmitting adhesive layer 10 is used to connect the light generator 3 and the encapsulation structure 4, although the light generator 3 is arranged close to the rear case 2, the light generator 3 and the light receiver 5 are not located on the same plane, which affects the mutual light exchange It is also greatly reduced, but in order to further prevent the light emitted by the light generator 3 from escaping to the light receiver 5 and affecting the light reception of the light receiver 5, the light-transmitting adhesive layer 10 is arranged along the edge of the light-emitting surface of the light generator 3. In addition, a light-shielding structure is provided on the sidewall of the transparent adhesive layer 10 opposite to the light receiver 5.
  • the light shielding structure is provided to prevent the light emitted by the light generator 3 from passing through the light-transmitting adhesive layer 10 and irradiating onto the light receiver 5.
  • the light-shielding ink is coated on the inner wall of the hole opened in the rear shell 2 to form a light-shielding structure.
  • the light-shielding structure is that a light-shielding film layer is provided on the sidewall of the light-transmitting adhesive layer 10 opposite to the light receiver 5.
  • the light-shielding film layer provided in the embodiment of the present application is used as a light-shielding structure, compared with the existing light-shielding structure
  • the barrier ribs or light-shielding foam not only has a simple structure, a small footprint, and a simple preparation process, which will reduce the manufacturing cost of the entire smart wearable device.
  • the smart wearable device further includes an optical receiver packaging structure 6 for encapsulating the optical receiver 5. Due to the large size of the optical receiver 5, the optical receiver 5 is embedded in the optical receiver. The manufacturing process is relatively complicated in the way inside the package structure of the receiver. Therefore, it is preferable to open a hole on the rear shell 2 and install the light receiver package structure 6 on the hole.
  • the rear case 2 has an integral light-transmitting structure, and the rear case 2 is first plated with a light-shielding film, and then the position of the rear case 2 opposite to the light receiving surface of the light receiver 5 is hollowed out to form the light receiver packaging structure 6.
  • the multiple light receivers 5 are arranged in a regular shape, and the light generator 3 is arranged on the multiple light receivers in a regular shape.
  • the light generator 3 has multiple, and the multiple light generators 3 are arranged in a regular shape, and the light receiver 3 is arranged at the center of the multiple light generators 5 in a regular shape; of course, the light Other arrangements of the generator 3 and the optical receiver 5 are also within the protection scope of this application.
  • the light generator 3 provided in the embodiment of the present application may be an LED lamp, the light receiver 5 may be a PD, and the first control board and the second control board are PCB boards.
  • the smart wearable device provided by the embodiments of the present application may be a smart watch, a smart bracelet, or other wearable devices.
  • the specific structure is not limited here.

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Abstract

一种智能穿戴设备，涉及通信设备技术领域，智能穿戴设备包括显示屏（1）和与显示屏（1）相扣合的后壳（2），还包括：光发生器（3）和光接收器（5），光发生器（3）和光接收器（5）设置在显示屏（1）和后壳（2）相扣合形成的安装腔内，光发生器（3）用于朝后壳（2）外部发射光，光接收器（5）用于接收从后壳（2）外部透进的光，光发生器（3）设置在第一控制板上，光接收器（5）设置在第二控制板（7）上，光发生器（3）相对光接收器（5）靠近后壳（2）设置。

Description

一种智能穿戴设备
本申请要求在2019年5月14日提交中国国家知识产权局、申请号为201910402154.6的中国专利申请的优先权，发明名称为“一种智能穿戴设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信设备技术领域，尤其涉及一种智能穿戴设备。
背景技术
随着信息化水平的快速提高以及人们对身心健康的重视度提高，可以实时监测身体健康状况的智能穿戴设备的需求和应用逐渐增多，心率监测元件作为可穿戴设备中的最重要的检测元件，需要24小时实时监测的应用场景越来越多。
目前智能穿戴设备在心率监测方面主要采用了光电容积脉搏波描记法(Photo Plethysmography，PPG)，简称光电法。这种监测心率的方法是基于物质对光的吸收原理，即通过智能穿戴设备的发光二极管(Light-Emitting Diode，LED)配合光电二极管(Photo Diode，PD)照射血管一段时间，根据血液的吸光度来测量心率。具体而言，当LED发射的一定波长的光束照射到皮肤表面时，光束将通过透射或反射方式传送到PD，在此过程中由于受到皮肤肌肉和血液吸收的衰减作用，PD监测到光的强度将减弱。其中人体的皮肤、骨骼、肉、脂肪等对光的反射是固定值，而毛细血管和动静脉则在心脏的作用下随着脉搏容积不停变大变小。当心脏收缩时，外周血容量最多、光吸收量也最大，PD检测到的光强度最小；而在心脏舒张时反之，PD检测到的光强度最大，进而使PD接收到的光强度随之呈脉动性变化。
目前利用反射式光电法是检测心率最常用的方法，反射式光电法是发光二极管和光电二极管位于被测部位的同一侧，主要测量反射回来的光。这种方法测量心率的优点是非常简便，对测量部位的要求也很低，只要组织比较平滑且皮下脂肪少的的地方几乎都可以测量，比如额头、手腕。因此，大部分智能手环、智能手表等智能穿戴设备都采用了这种方法测量心率。
现有一种具有检测心率的智能穿戴设备，智能穿戴设备包括相对设置的显示屏和后壳，参照图1，还包括设置在显示屏和后壳相扣合形成的安装腔内的发光二极管001、与发光二极管001并列设置且均安装在同一个电路板006上的光电二极管003，发光二极管001和光电二极管003之间设置有用于阻挡发光二极管001发出的光直接照射到光电二极管003的遮挡结构005，发光二极管001和光电二极管003的相对被测部位的一侧设置有相对应的LED透镜002和PD透镜004，LED透镜002一般镶嵌在后壳的开口上，由于装配工艺需求，发光二极管001与LED透镜002之间具有间距。具体工作时，参照图2，发光二极管001所发出的光透过LED透镜002经表皮层E进入真皮层D和皮下组织层H，光经真皮层D内的表层毛细血管s和皮下组织层H内的深层毛细血管p反射后，再通过PD透镜004由光电二极管003接收。
现有技术中通常LED透镜002的厚度为0.8mm左右，且发光二极管001与LED透镜002之间的间距为0.3mm左右，导致发光二极管001发出的光线在穿透较厚的LED透镜002过程中产生较大的能耗，影响发光二极管001发射光的透过率，但是为了保障检测效果，需要加大发光二极管001的照射功率，以使发光二极管001的功耗较大，无法支撑24小时进行实时监测，最终影响产品续航。
发明内容
本申请的实施例提供一种智能穿戴设备，主要目的是提供一种能够提高光发生器发出的光线的透过率，降低光发生器所发出的光线在透射至被测部位的能耗，进而提高智能穿戴设备的续航。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，本申请提供了一种智能穿戴设备，包括显示屏和与所述显示屏相扣合的后壳，还包括：光发生器和光接收器，所述光发生器和所述光接收器设置在所述显示屏和所述后壳相扣合形成的安装腔内，所述光发生器用于朝所述后壳外部发射光，所述光接收器用于接收从所述后壳外部透进的光，所述光发生器设置在第一控制板上，所述光接收器设置在第二控制板上，所述光发生器相对所述光接收器靠近所述后壳设置。
本申请实施例提供的智能穿戴设备，通过将光发生器设置在第一控制板上，光接收器设置在第二控制板上，且光发生器相对光接收器靠近后壳设置，这样使光发生器所发出的光线在穿过后壳照射至被测部位时，光线所经过的路径相对现有技术中光线所经过的路径缩短，提高光发生器发出的光线的透过率，进而降低光线在照射过程中所消耗的光照损耗，提升了整个智能穿戴设备的续航，最终提高了整个智能穿戴设备的使用性能。
在第一方面可能的实现方式中，还包括用于封装所述光发生器的封装结构，所述封装结构内形成有放置腔，所述光发生器设置在所述放置腔内，所述封装结构相对所述光发生器发光面的面为透光面，所述封装结构的所述透光面安装在所述后壳上开设的开口处。通过将光发生器设置在封装结构的放置腔内，再将封装结构安装在后壳的开口处，在保障光发生器距离后壳较近，进而保障光发生器距离被测部位较近的情况下，光发生器和封装结构集成在一起成为一个模组，方便安装。
在第一方面可能的实现方式中，所述光发生器的发光面贴合在所述透光面上。通过将光发生器的发光面贴合在透光面上，即光发生器的发光面与透光面之间无间隙，这样可避免光发生器所发出的光线照射到透光面上时发生反射现象，以进一步提高光线的透过率。
在第一方面可能的实现方式中，所述封装结构的材质为透光材质，所述封装结构的相对所述光接收器的面上设置有遮光结构。通过遮光结构可有效防止光发生器所发出的光穿过封装结构散射到光接收器上，以使光接收器直接接收光发生器所发出的光线而形成干扰信号，淹没有用信号的现象。
在第一方面可能的实现方式中，所述封装结构的侧面为台阶结构。通过将封装结构的侧面设置为台阶面，以增加防水路径，提高整个智能穿戴设备的防水性能。
在第一方面可能的实现方式中，还包括用于封装所述光发生器的封装结构，所述封装结构的材质为透光材质，所述光发生器的发光面朝向所述封装结构，且通过透光胶层与所述封装结构连接，所述封装结构安装在所述后壳上开设的开口处。采用透光胶层将封装结构粘结在封装结构上，在保障光发生器距离后壳较近，进而保障光发生器距离被测部位较近的情况下，连接结构简便，实施方便。
在第一方面可能的实现方式中，所述透光胶层沿着所述光发生器的发光面的边缘布设，且所述透光胶层的相对所述光接收器的侧壁上设置有遮光结构。在保障透光胶层连接封装结构和光发生器的情况下，将透光胶层沿着光发生器的发光面的边缘布设，再在透光胶层的相对光接收器的侧壁上设置遮光结构，通过遮光结构有效避免光发生器所发出的光穿过透光胶层散射到光接收器上，以使光接收器直接接收光线而形成干扰信号，淹没有用信号的现象。
在第一方面可能的实现方式中，所述遮光结构为遮光膜层。采用遮光膜层作为遮光结构， 不仅结构简单，实施方便，制造成本也较低。
在第一方面可能的实现方式中，所述封装结构的背离所述光发生器的发光面的一侧设置有单向透光结构，所述单向透光结构用于将所述光发生器发射的光透出所述封装结构，且用于阻止所述封装结构外部的光透过所述封装结构。通过单向透光结构保障光发生器发射的光线可以透射出去，且从外部不可见内部结构，提高了整个智能穿戴设备的外观美观度。
在第一方面可能的实现方式中，所述单向透光结构为设置在所述封装结构的背离所述光发生器的发光面的一侧的单向透光膜层。利用单向透光膜层作为单向透光结构，在保障从外部看不见内部结构的前提下，该单向透光结构的结构简单，实施方便。
在第一方面可能的实现方式中，所述封装结构的背离所述光发生器的发光面的一侧为朝远离所述后壳方向弯曲的曲面。将封装结构的背离光发生器的发光面的一侧为朝远离后壳方向弯曲的曲面，以使封装结构更容易与被测部位紧贴，会更进一步使光发生器靠近被测部位，防止照射到被测部位的光线直接发生反射现象，避免直接发射的光干扰从被测部位吸收后的光线，甚至淹没有用信号。
在第一方面可能的实现方式中，所述封装结构材质选自透明陶瓷、透明玻璃、透明塑料和透明宝石等透光材质的一种。
在第一方面可能的实现方式中，所述光接收器具有多个，且多个所述光接收器呈规则形状布设，且所述光发生器设置在呈规则形状的多个光接收器的中心位置；或，所述光发生器具有多个，且多个所述光发生器呈规则形状布设，且所述光接收器设置在呈规则形状的多个光发生器的中心位置。
附图说明
图1为现有技术中一种智能穿戴设备的部分结构的剖视图；
图2为智能穿戴设备所发出的光在被测部位的光路图；
图3为本申请实施例智能穿戴设备的立体图；
图4为图3的内部结构示意图；
图5为本申请实施例封装结构的立体图；
图6为图5的另外一个视角图；
图7为图5的另外一个视角图；
图8为图5的内部结构示意图；
图9为本申请实施例智能穿戴设备的内部结构示意图。
具体实施方式
本申请实施例涉及智能穿戴设备，以下对上述实施例涉及到的概念进行简单说明：
电路板(Printed Circuit Board，PCB)。
发光二极管(Light-Emitting Diode，LED)。
光电二极管(Photo Diode，PD)。
参照图3、图4和图9，本申请实施例提供一种智能穿戴设备，包括显示屏1和与显示屏1相扣合的后壳2，还包括：光发生器3和光接收器5，光发生器3和光接收器5设置在显示屏1和后壳2相扣合形成的安装腔内，光发生器3用于朝后壳2外部发射光，光接收器5用于接收从后壳2外部透进的光，光发生器3设置在第一控制板(图中未显示)上，光接收器5设置在第二控制板7上，光发生器3相对光接收器5靠近后壳2设置。
由于光发生器3和光接收器5分别设置在相对应的第一控制板和第二控制板7上，再将光发生器3相对光接收器5靠近后壳2设置，这样光发生器3与后壳2之间的距离相比现有 技术减小了，进而光发生器3与被测部位之间的距离也减小了，当光发生器3所发出的光线照射至被测部位时，光线所经过的路径相对现有技术中光线所经过的路径缩短，降低光线在照射过程中所消耗的光照损耗，从而提高光发生器3发出的光线的透过率，提升了整个智能穿戴设备的续航，且光发生器3和光接收器5不位于同一平面上，相互之间的窜光影响也大幅减弱，干扰和影响光接收器5的正常反射信号接收的现象也减弱，若该智能穿戴设备具有监测心率功能，就可明显提高心率监测准确度，最终提高了整个智能穿戴设备的使用性能，提高用户的体验度。
光发生器3的封装方式具有多种情况，在一些实施方式中，参照图3、图4和图8，本申请还包括用于封装光发生器3的封装结构4，封装结构4内形成有放置腔，光发生器3设置在放置腔内，封装结构4相对光发生器3发光面的面为透光面401，封装结构4的透光面401安装在后壳2上开设的开口处。在另外一些实施方式中，参照图9，还包括用于封装光发生器3的封装结构4，封装结构的材质为透光材质，光发生器3的发光面朝向封装结构4，且通过透光胶层10与封装结构4连接，封装结构4安装在后壳2上开设的开口处。当然本申请还包括其他光发生器3的封装结构。
当采用图3、图4和图8所示的封装结构时，光发生器3发出的光线穿过封装结构4的透光面401，进而穿过后壳2照射在被测部位上。
图3、图4和图8所示的封装结构，由于在封装结构4内形成放置腔，光发生器3直接设置在放置腔内，即采用封装结构4将光发生器3包裹的方式封装光发生器3，在具体实施时，可以先将光发生器3安装在封装结构4内后两者成为一个独立的模组，再将该模组安装在后壳2开设的开口处，此种封装方式在保障从光发生器3所发出的光照射到被测部位的光路径缩短的前提下，该封装结构4和光发生器3可以集成在一起，相比现有技术，这样去掉了光发生器3和光发生器透镜之间的组装避让间隙。
当该智能穿戴设备用作心率检测设备时，需要光发生器3所发出的光在照射至被测部位的过程中，光线尽可能不能发生光反射现象(参照图2，图2中标记×的为光反射现象)，因为当光发生反射时，不仅降低透光率，反射的光也会成为干扰信号，进而影响光接收器5对有用信号的接收，所以，为了提高智能穿戴设备准确测量心率，光发生器3所发出的光在照射至被测部位的过程中尽可能不能发生反射现象。通常，光发生器3所发出的光在照射至被测部位的过程中会存在两处光反射情况，一处是光发生器3与封装结构4之间存有间隙会造成光反射，另一处个是封装结构4与被测部位之间存有间隙会造成光反射。
为了防止光发生器3与封装结构4之间存有间隙而造成光反射，参照图8，光发生器3的发光面贴合在透光面401上，这样当光发生器3的发光面发出的光会直射透光面401，不会在透光面401上出现反射现象，这样不仅提高了光线的透光率，也会保证测量数据的准确度。
同样，为了防止封装结构4与被测部位之间存有间隙而造成光反射，参照图8(图2中标记√的为光不发生反射现象)，外露在后壳2上的封装结构4的背离光发生器3的发光面的一侧为朝远离后壳2方向弯曲的曲面。通过曲面可使封装结构4紧贴在被测部位上，不会在被测部位上出现反射现象，这样不仅提高了光线的透光率，避免反射的光干扰进入光接收器的光线。
上述实施例指出的是封装结构4相对光发生器3发光面的面为透光面，以保证光发生器3发出的光照射至被测部位，但是具体实施时，通常为直接采用整体为透光的封装结构4，这样取材方便，也相对应的会降低成本。例如，封装结构4的材质可以选自透光材质，封装结 构4可选自包括但不限于透明陶瓷、透明玻璃、透明塑料和透明蓝宝石等。
采用图3、图4和图8所示的封装结构时，虽然光发生器3和光接收器5不位于同一平面上，相互之间的窜光影响会大幅减弱，但是为了进一步防止光发生器3发出的光窜至光接收器5，影响光接收器5对光线的接收，在整体透光的封装结构4的相对光接收器5的面上设置有遮光结构。通过设置遮光结构，阻止光接收器5发出的光线穿过封装结构4散射至光接收器5上；另外，也可以在光接收器5的相对光发生器3的面上设置遮光结构，也可以在光发生器3与光接收器5之间设置遮光结构。总之，能够防止光发生器3和光接收器5之间窜光的遮光结构均在本申请的保护范围之内。
遮光结构具有多种实现方式，为了结构简单，且实施方便，参照图7，遮光结构为遮光膜层9。具体实施时，只需在封装结构4的靠近光接收器5的一侧涂覆一层遮光膜层9，但是为了简化涂装工艺，可以在封装结构4的整个侧面涂覆一层遮光膜层9，例如，遮光膜层9可以是黑色膜层，也可以是其他深色膜层。当然，可以选用其他结构的遮光结构，但是，遮光膜层9相对其他遮光结构是优选方案。
通过智能穿戴设备为智能手表、智能手环等，在使用时是容易接触水的，所以，智能穿戴设备的防水性能也是智能穿戴设备性能的关键因素，本申请为了使智能穿戴设备具有防水功能，通过增加进水路径以提高防水作用，参照图8，封装结构4的侧面为台阶结构。将封装结构4安装镶嵌在后壳2上时，通过封装结构的侧面设置为台阶面，以增加从后壳2外部到后壳内部的进水路径，且光发生器3设置在封装结构4的放置腔内，且光发生器3也起到保护作用，所以，通过台阶结构和放置腔的相结合有效提高了整个智能穿戴设备的防水性能。
本申请的实施例中封装结构4的透光面直接镶嵌在后壳2上，也就是直接外露，当封装结构4采用整体为透光的材质时，为了提高整个智能穿戴设备的外观美观度，封装结构4的背离光发生器3的发光面的一侧设置有单向透光结构，单向透光结构用于将光发生器3发射的光透出封装结构4，且用于阻止封装结构4外部的光透过封装结构4。这样仅能保障光发生器3穿过封装结构4照射至被测部位上，但是从外部是不可见智能穿戴设备内部的光发生器3的，进而提高智能穿戴设备的外观美观度。
单向透光结构具有多种结构，为了结构简单，实施方便，参照图6，单向透光结构为设置在封装结构4的背离光发生器3的发光面的一侧的单向透光膜层8。利用单向透光膜层8作为单向透光结构，具体操作时，只需在封装结构4的背离光发生器3的发光面的一侧涂覆单向透过膜以形成单向透光膜层8。当然，可以选用其他结构的单向透光结构，但是，单向透光膜层8相对其他单向透光结构是优选方案。
封装结构4具有多种形状，在一些实施方式中，参照图5至图6，封装结构4为回转体结构；在另外一些实施方式中，封装结构4为长方体结构，当然，也可以为其他结构，本申请对封装结构的具体形状不做限定，任何形状均在本申请的保护范围之内。
为了防止光发生器3所发出的光线在穿透封装结构4时，产生较大的功耗，封装结构4在保障抗压强度的前提下，厚度越小越好，例如，当封装结构4的材质为透明陶瓷、透明玻璃或透明塑料其中的一种时，封装结构4的封装面的厚度为0.3mm～0.4mm，当封装结构4的材质为透明宝石时，封装结构4的封装面的厚度为0.3mm以下，相比现有的0.8mm的封装结构明显减小了厚度，即明显会降低功耗。
当采用图9所示的封装结构4时，该方案中封装结构4为板状结构，将光发生器3通过透光胶层10与封装结构4连接，结构简单，具体实施时，可在封装结构4的朝向光发生器3的一侧涂覆透光胶形成透光胶层10，再将光发生器3粘附在透光胶上，为了防止光发生器3 的发光面与封装结构4之间具有间隙，以发生光反射现象，在具体粘结时，可尽量使光发生器3靠近封装结构4，尽可能避免光发生器3与封装结构4之间出现间隙的现象，以提高了光线的透光率，也会保证测量数据的准确度。
因为光发生器3是通过透光胶层10粘结在封装结构4上，所以，为了选材方便，直接选择整体为透光的封装结构4，例如，封装结构4的材质可以选自透光材质，封装结构4可选自包括但不限于透明陶瓷、透明玻璃、透明塑料和透明蓝宝石等。
在一些实施方式中，为了保证智能穿戴设备具有防水功能，封装结构4的侧面也设计为台阶结构。通过封装结构的侧面设置台阶面，以增加从后壳2外部到后壳内部的进水路径。
图9所示的实施例中封装结构4形成后壳2的部分结构，也是直接外露，同样，为了提高整个智能穿戴设备的外观美观度，封装结构4的背离光发生器3的发光面的一侧设置有单向透光结构，单向透光结构用于将光发生器3发射的光透出封装结构4，且用于阻止封装结构4外部的光透过封装结构4。示例的，单向透光结构为设置在封装结构4的背离光发生器3的发光面的一侧的单向透光膜层8。如图9所示的实施例中，为了防止封装结构4与被测部位之间存有间隙会造成光反射，外露在后壳2上的封装结构4的背离光发生器3的发光面的一侧为朝远离后壳2方向弯曲的曲面。通过曲面设计可使封装结构4紧贴在被测部位上，不会在被测部位上出现反射现象，这样不仅提高了光线的透光率，避免反射的光干扰进入光接收器的光线。
当采用透光胶层10连接光发生器3和封装结构4时，虽然光发生器3靠近后壳2设置，光发生器3和光接收器5不位于同一平面上，相互之间的窜光影响也大幅减弱，但是为了进一步防止光发生器3发出的光窜至光接收器5，影响光接收器5对光线的接收，透光胶层10沿着光发生器3的发光面的边缘布设，且透光胶层10的相对光接收器5的侧壁上设置有遮光结构。这样在保证光发生器3与封装结构4通过透光胶层10连接的基础上，通过设置遮光结构阻止光发生器3发出的光线穿过透光胶层10照射至光接收器5上。具体实施时，在后壳2的开设的孔的内壁上涂覆遮光油墨，遮光油墨形成遮光结构。
示例的，遮光结构为设置在透光胶层10的相对光接收器5的侧壁上设置有遮光膜层，本申请实施例提供的遮光膜层作为遮光结构，相比现有的作为遮光结构的挡筋或遮光泡棉，不仅结构简单，占用空间小，制备工艺也简便，进而会降低整个智能穿戴设备的制造成本。
在一些实施方式中，参照图3，智能穿戴设备还包括用于封装光接收器5的光接收器封装结构6，由于光接收器5的尺寸较大，采用将光接收器5镶嵌在光接收器封装结构内的方式时制备工艺比较复杂，所以，优选在后壳2上开孔，并将光接收器封装结构6安装在开孔上。或者，后壳2为整体透光结构，先在后壳2上镀遮光膜，再在后壳2的相对光接收器5的接光面的位置进行镂空处理以形成光接收器封装结构6。
为了提高保障智能穿戴设备的监测效率，参照图3，光接收器5具有多个，且多个光接收器5呈规则形状布设，且光发生器3设置在呈规则形状的多个光接收器的中心位置；另外，光发生器3具有多个，且多个光发生器3呈规则形状布设，且光接收器3设置在呈规则形状的多个光发生器5的中心位置；当然，光发生器3和光接收器5的其他布设方式也在本申请的保护范围之内。
本申请实施例提供的光发生器3可以是LED灯，光接收器5可以为PD，第一控制板和第二控制板为PCB板。
本申请实施例提供的智能穿戴设备可以是智能手表，也可以是智能手环，也可以是其他穿戴设备。在此对具体的结构不做限定。
在本说明书的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (11)

  1. 一种智能穿戴设备，包括显示屏和与所述显示屏相扣合的后壳，其特征在于，还包括：光发生器和光接收器，所述光发生器和所述光接收器设置在所述显示屏和所述后壳相扣合形成的安装腔内，所述光发生器用于朝所述后壳外部发射光，所述光接收器用于接收从所述后壳外部透进的光，所述光发生器设置在第一控制板上，所述光接收器设置在第二控制板上，所述光发生器相对所述光接收器靠近所述后壳设置。
  2. 根据权利要求1所述的智能穿戴设备，其特征在于，还包括用于封装所述光发生器的封装结构，所述封装结构内形成有放置腔，所述光发生器设置在所述放置腔内，所述封装结构相对所述光发生器发光面的面为透光面，所述封装结构的所述透光面安装在所述后壳上开设的开口处。
  3. 根据权利要求2所述的智能穿戴设备，其特征在于，所述光发生器的发光面贴合在所述透光面上。
  4. 根据权利要求2或3所述的智能穿戴设备，其特征在于，所述封装结构的材质为透光材质，所述封装结构的相对所述光接收器的面上设置有遮光结构。
  5. 根据权利要求2-4中任一项所述的智能穿戴设备，其特征在于，所述封装结构的侧面为台阶结构。
  6. 根据权利要求1所述的智能穿戴设备，其特征在于，还包括用于封装所述光发生器的封装结构，所述封装结构的材质为透光材质，所述光发生器的发光面朝向所述封装结构，且通过透光胶层与所述封装结构连接，所述封装结构安装在所述后壳上开设的开口处。
  7. 根据权利要求6所述的智能穿戴设备，其特征在于，所述透光胶层沿着所述光发生器的发光面的边缘布设，且所述透光胶层的相对所述光接收器的侧壁上设置有遮光结构。
  8. 根据权利要求4或7所述的智能穿戴设备，其特征在于，所述遮光结构为遮光膜层。
  9. 根据权利要求2-8中任一项所述的智能穿戴设备，其特征在于，所述封装结构的背离所述光发生器的发光面的一侧设置有单向透光结构，所述单向透光结构用于将所述光发生器发射的光透出所述封装结构，且用于阻止所述封装结构外部的光透过所述封装结构。
  10. 根据权利要求9所述的智能穿戴设备，其特征在于，所述单向透光结构为设置在所述封装结构的背离所述光发生器的发光面的一侧的单向透光膜层。
  11. 根据权利要求2-10中任一项所述的智能穿戴设备，其特征在于，所述封装结构的背离所述光发生器的发光面的一侧为朝远离所述后壳的方向弯曲的曲面。
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US20220218219A1 (en) 2022-07-14

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