An intelligent ring

Abstract

The utility model discloses a kind of intelligent rings, belong to wearable equipment technical field, solve the problem that existing intelligent ring wearing angle dependency is strong, wearing direction poor adaptability. A kind of intelligent ring, including annular shell, the inner periphery of annular shell is contacted with finger skin when intelligent ring is worn, the inner periphery of annular shell is equipped with first optical area and second optical area, and first optical area and second optical area are symmetrical along the central axis of intelligent ring, first optical area is equipped with first optoelectronic plethysmogram sensor, second optical area is equipped with second optoelectronic plethysmogram sensor;Wherein, the arc angle α of the arc between the center point of first optical area and the center point of second optical area corresponds to satisfy 120°≤α<180°. The intelligent ring of the utility model can obtain effective monitoring result in any wearing state without needing to pay attention to the wearing orientation of ring, without needing to carry out any manual calibration operation.

Description

Technical Field

[0001] This utility model belongs to the field of wearable device technology, specifically relating to a smart ring. Background Technology

[0002] Smart rings, as miniaturized wearable physiological monitoring devices, typically collect physiological parameters such as heart rate and blood oxygenation using photoplethysmography (PPG) technology. However, to ensure better light output and reception by the PPG sensor, existing smart rings separate the light emitting and receiving units within the PPG sensor. When the ring is rotated to a certain angle, the light emitted by the emitting unit may be blocked by finger bones, preventing the receiving unit from receiving the light emitted by the emitting unit and thus affecting the detection of the user's physiological parameters. Therefore, existing smart rings are highly dependent on the wearing angle and have poor adaptability to different wearing directions, requiring users to manually adjust the ring's position to restore effective detection, severely impacting the reliability of continuous monitoring and the user experience. Utility Model Content

[0003] In view of the above problems, the purpose of this utility model is to provide a smart ring that solves the problems of strong dependence on wearing angle and poor adaptability of wearing direction of existing smart rings.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A smart ring includes an annular shell. The inner circumference of the annular shell contacts the skin of the finger when the smart ring is worn. The inner circumference of the annular shell is provided with a first optical region and a second optical region, and the first optical region and the second optical region are symmetrical about the central axis of the smart ring. A first photoplethysmography (PPG) sensor is provided in the first optical region, and a second PPG sensor is provided in the second optical region. The arc angle α corresponding to the arc between the center point of the first optical region and the center point of the second optical region satisfies 120°≤α<180°.

[0005] In some embodiments, the first photoplethysmography sensor includes a first light emitting component and a first light receiving component arranged adjacent to each other, and the second photoplethysmography sensor includes a second light emitting component and a second light receiving component arranged adjacent to each other. The first light-emitting component is used to output the first light energy toward the side of the finger; The second light-emitting component is used to output a second light energy toward the other side of the finger; The first light receiving component is used to receive first reflected light formed by the reflection of first light energy through the finger, and to receive first transmitted light that transmits second light energy through the finger; The second light receiving component is used to receive second reflected light formed by the reflection of the second light energy through the finger, and to receive second transmitted light formed by the second light energy passing through the finger.

[0006] In some embodiments, the first optical region and the second optical region further include light-shielding components, which are respectively disposed in the circumferential direction of the first photoplethysmography sensor and the circumferential direction of the second photoplethysmography sensor. The light-shielding components are used to prevent light leakage inside the first photoplethysmography sensor and to prevent light leakage inside the second photoplethysmography sensor.

[0007] In some embodiments, the light-shielding component includes a first light-shielding component and a second light-shielding component; The first light-shielding component is disposed around the first light emitting component and / or around the first light receiving component.

[0008] The second light-shielding component is disposed circumferentially to the second light-emitting component and / or circumferentially to the second light-receiving component.

[0009] In some embodiments, the first photoplethysmography sensor and / or the second photoplethysmography sensor are one-piece sensors, and the light-shielding assembly includes a third light-shielding assembly; the third light-shielding assembly is configured as a dual-through-hole structure adapted to the one-piece sensor.

[0010] In some embodiments, the annular housing includes an outer shell and an inner ring body, wherein the inner ring body is a molded body cast and solidified on the inner peripheral surface of the outer shell, and the first photoplethysmography sensor and the second photoplethysmography sensor are encapsulated within the molded body.

[0011] In some embodiments, the annular housing includes an outer shell and an inner shell, the inner shell being disposed along the inner periphery of the outer shell, and the two together forming a receiving cavity, wherein the first photoplethysmography sensor and the second photoplethysmography sensor are disposed within the receiving cavity.

[0012] In some embodiments, the first optical region includes a first light-transmitting protrusion protruding from the inner circumferential surface of the inner ring body, the first light-transmitting protrusion being used to concentrate light. And / or the second optical region includes a second light-transmitting protrusion protruding from the inner circumferential surface of the inner ring body, the second light-transmitting protrusion being used to focus light.

[0013] In some embodiments, the first optical region includes a first light-transmitting window disposed on the inner housing, and the first light-transmitting window is correspondingly disposed with the first photoplethysmography sensor. And / or the second optical region includes a second light-transmitting window disposed on the inner housing, the second light-transmitting window being disposed corresponding to the second photoplethysmography sensor.

[0014] In some embodiments, the first light-transmitting window is filled with a light-transmitting medium, which is flush with the inner peripheral surface of the inner shell, or the light-transmitting medium protrudes from the inner peripheral surface of the inner shell. And / or the second light-transmitting window is filled with a light-transmitting medium, which is flush with the inner circumferential surface of the inner shell, or the light-transmitting medium protrudes from the inner circumferential surface of the inner shell.

[0015] The above solution provides a smart ring, including a ring-shaped shell. Since the inner circumference of the ring-shaped shell contacts the skin of the finger when the smart ring is worn, and a first optical region and a second optical region are circumferentially arranged on the inner circumference of the ring-shaped shell, a first photoplethysmography (PPG) sensor can be placed in the first optical region, and a second PPG sensor can be placed in the second optical region. Furthermore, the first and second PPG sensors can output light to the finger and receive corresponding reflected and / or transmitted light to achieve the detection of physiological parameters. Because the first and second optical regions are symmetrical along the central axis of the smart ring, and the arc angle α between the center points of the first and second optical regions satisfies 120° ≤ α < 180°, regardless of the circumferential wearing angle of the smart ring, at least one optical region can be aligned with the effective detection area of ​​the finger (an area rich in soft tissue and densely distributed blood vessels). Even if the first photoplethysmography (PPG) sensor fails due to rotational displacement into a bone-occluded area, the second PPG sensor can still maintain effective light energy output and reception. This eliminates the strong dependence on the wearing angle of the smart ring, enabling continuous and reliable physiological parameter acquisition across a 360° circumferential range. Users do not need to pay attention to the ring's orientation or perform any manual calibration; they can obtain effective monitoring results in any wearing position. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional schematic diagram of an existing smart ring; Figure 2 This is a schematic diagram of the structure of the smart ring of this utility model; Figure 3 This is a cross-sectional view of the smart ring of this utility model. Figure 1 ; Figure 4 This is a cross-sectional view of the smart ring of this utility model. Figure 2 ; Figure 5 This is a cross-sectional view of the smart ring of this utility model. Figure 3 ; Figure 6 This is a cross-sectional view of the smart ring of this utility model. Figure 4 ; Figure 7 This is a cross-sectional view of the smart ring of this utility model. Figure 5 ; Figure 8a This is a schematic diagram of the structure of the light-shielding component of this utility model; Figure 8b This is another structural schematic diagram of the light-shielding component of this utility model; Figure 9 This is a schematic diagram of the transmission and reflection light paths of the smart ring of this utility model; It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0018] In the diagram, 1-1 is the inner ring; 1-11 is the first light-transmitting protrusion; 1-12 is the second light-transmitting protrusion; 1-13 is the light emitting unit; 1-14 is the light receiving unit; 1-15 is the PPG sensor; and 1-2 is the outer ring. 100. Smart ring; 110. Ring-shaped shell; 111. Inner ring section; 111a. Inner ring body; 111b. Inner shell; 112. Outer shell; 113. Receiving cavity; 120. Hole; 200a, First optical region; 210a, First light-shielding component; 211, Third light-shielding component; 220a, First light-transmitting protrusion; 230a, First light-transmitting window; 231a, Third light-transmitting window; 200b, Second optical region; 210b, Second light-shielding component; 220b, Second light-transmitting protrusion; 230b, Second light-transmitting window; 231b, Fourth light-transmitting window; 300. First photoplethysmography (PPG) sensor; 310. First optical transmitting component; 320. First optical receiving component; 400. Second photoplethysmography (PPG) sensor; 410. Second optical transmitting component; 420. Second optical receiving component. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0024] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] Smart rings can be worn on a user's finger to monitor vital signs. Biosensors can collect or detect human biological information through contact with the user's skin or by outputting energy to the finger. Examples include resting heart rate measurement, dynamic heart rate measurement, heart rate variability detection, and blood oxygenation measurement. The detected physiological parameters are then transmitted to the user's terminal via near-field communication using a communication unit. A photoplethysmography (PPG) sensor positioned within the smart ring directly opposite the finger can also monitor physiological parameters by outputting light energy to the finger and receiving reflected and transmitted light.

[0027] Figure 1 This is a cross-sectional diagram of an existing smart ring. (For example...) Figure 1 As shown, the smart ring includes an inner ring 1-1 and an outer ring 1-2. The inner ring 1-1 has a first light-transmitting protrusion 1-11 and a second light-transmitting protrusion 1-12. Here, the first light-transmitting protrusion 1-11 and the second light-transmitting protrusion 1-12 can be formed simultaneously with the inner ring 1-1 during casting. Existing smart rings have two sets of PPG sensors. The first light-transmitting protrusion 1-11 and the second light-transmitting protrusion 1-12 correspond to the light emitting unit 1-13 and the light receiving unit 1-14 in one set of PPG sensors, respectively. For example, the first light-transmitting protrusion 1-11 corresponds to the light emitting unit 1-13, and the second light-transmitting protrusion 1-12 corresponds to the light receiving unit 1-14. In actual wear, the first light-transmitting protrusion 1-11 and the second light-transmitting protrusion 1-12 are located on both sides of the finger. However, when the PPG sensors are placed separately on both sides of the finger, the finger bones can easily obstruct the light when the smart ring is rotated to a certain angle, resulting in poor transmitted light signals between the light emitting unit 1-13 and the light receiving unit 1-14, affecting the accuracy of physiological parameter detection. Therefore, to ensure physiological parameter detection, another set of PPG sensors 1-15 is placed in the smart ring directly opposite the finger. Since the light emitting unit 1-13 and the light receiving unit 1-14 use transmitted light for physiological parameter detection, while the other set of PPG sensors 1-15 uses reflected light, this increases the complexity of the internal circuitry of the smart ring and raises production and implementation costs.

[0028] Figure 2 A schematic diagram of a smart ring 100 according to an embodiment of this application is shown. The smart ring 100 can be worn on a user's finger to monitor vital signs. Exemplarily, in... Figure 2The smart ring 100 includes an annular housing 110, which comprises an inner ring portion 111 and an outer shell 112. It is understood that the inner ring portion 111 can be either an inner ring body 111a or an inner shell 111b. If the inner ring body 111a is integrally cast, it can also be considered the ring body of the smart ring 100. As one possible implementation, the annular housing 110 of the smart ring 100 includes an inner shell 111b and an outer shell 112, with the inner shell 111b cooperating with the outer shell 112 to form a receiving cavity 113 between them. This receiving cavity 113 is used to house functional modules that implement the functions of the smart ring 100, such as circuit boards, sensors, and batteries.

[0029] In practice, the inner shell 111b can be a pre-formed shell, such as a pre-formed transparent shell, which is fixed to the outer shell 112 by mortise and tenon joints and / or adhesive bonding.

[0030] As another possible implementation, the inner ring body 111a can be cast using a mold. Here, when the inner ring body 111a is cast as a single piece, it can also be considered the ring body of the smart ring 100. The outer shell 112 and various functional modules of the smart ring 100 are configured in a pre-set casting mold, and the inner ring body 111a is cast using a transparent medium such as transparent resin. It is easy to understand that the functional modules of the smart ring 100 can include components such as a circuit board, processor, communication unit, memory, sensors, and battery, used to realize various functions of the smart ring 100. For example, sensors can include motion sensors and biosensors. Motion sensors can include gyroscopes, accelerometers, magnetometers, etc., used to detect the user's motion information when wearing the smart ring 100. Biosensors can include photoplethysmography (PPG) sensors, electrocardiogram (ECG) sensors, temperature sensors, etc., used to acquire human biological information such as heart rate, blood oxygen, blood pressure, and oxygen uptake. It is understood that all of the above sensors are mounted on the circuit board. When the outer shell 112 and the inner ring portion 111 mate, they can form a hole 120, which serves as a wearing hole for the user's finger to pass through. When the smart ring 100 is worn on the user's finger, the inner ring portion 111 will be in complete contact with the finger's skin. Based on this, the biosensor can collect or detect human biological information by contacting the user's skin or by outputting corresponding energy to the user's finger through the inner ring portion 111. For example, it can perform static heart rate measurement, dynamic heart rate measurement, heart rate variability detection, or blood oxygen measurement, and then use a communication unit to send the detected human physiological parameter data to the user terminal via near-field communication.

[0031] like Figure 3 As shown, Figure 3 Cross-section of smart ring 100 Figure 1 This application provides a smart ring 100, including an annular shell 110. The inner circumference of the annular shell 110 contacts the skin of the finger when the smart ring 100 is worn. The inner circumference of the annular shell 110 is provided with a first optical region 200a and a second optical region 200b, and the first optical region 200a and the second optical region 200b are symmetrical about the central axis of the smart ring 100. A first photoplethysmography (PPG) sensor 300 is provided in the first optical region 200a, and a second PPG sensor 400 is provided in the second optical region 200b. The arc angle α corresponding to the arc between the center point of the first optical region 200a and the center point of the second optical region 200b satisfies 120°≤α<180°.

[0032] Specifically, a first photoplethysmography (PPG) sensor 300 is housed in the first optical region 200a, and a second PPG sensor 400 is housed in the second optical region 200b. In actual use, the light emitted by the first PPG sensor 300 can pass through the first optical region 200a and act on the user's finger. The reflected light from the finger is then reflected back to the first PPG sensor 300 through the first optical region 200a. Similarly, the light emitted by the second PPG sensor 400 can pass through the second optical region 200b and act on the user's finger. The reflected light from the finger is then reflected back to the second PPG sensor 400 through the second optical region 200b.

[0033] Here, when the first photoplethysmography (PPG) sensor 300 outputs light with the first light energy, this light can also penetrate the finger. Correspondingly, the transmitted light corresponding to the first light energy can be transmitted to the second PPG sensor 400 through the second optical region 200b. Similarly, when the second PPG sensor 400 outputs light with the second light energy, this light can also penetrate the finger. Correspondingly, the transmitted light corresponding to the second light energy can be transmitted to the first PPG sensor 300 through the first optical region 200a. In this way, when both the first PPG sensor 300 and the second PPG sensor 400 output light energy, a transmitted light path and a reflected light path can be simultaneously formed within the inner ring of the smart ring 100.

[0034] It is understandable that the first optical region 200a and the second optical region 200b can be implemented using existing light-transmitting materials. For example, light-transmitting resin, light-transmitting glass, light-transmitting film, or other components with light-transmitting materials.

[0035] For example, such as Figure 3 As shown, with the extension line of the radius R1 of the inner ring body 111a of the smart ring 100 as the central axis, the first optical region 200a and the second optical region 200b are symmetrical along the central axis of the smart ring 100. Here, the central axis of the smart ring 100 is the central axis of the circumferential cross section of the smart ring 100.

[0036] It's easy to understand that, to accommodate users with different finger sizes, the smart ring 100 can be available in different sizes or bands. Since the inner diameters of the smart rings 100 differ between sizes, the circumference of each ring also varies. To ensure good monitoring results for users with different finger sizes, the arc angle α is limited to 120° ≤ α < 180°. This ensures that regardless of the ring's circumferential wearing angle, at least one optical area can be aligned with the effective detection area of ​​the finger (an area rich in soft tissue and densely populated with blood vessels). Even if the first photoplethysmography (PPG) sensor 300 fails due to rotational displacement into a bone-obstructed area, the second PPG sensor 400 can still maintain effective light energy output and reception, thus eliminating strong dependence on the ring's wearing angle and achieving continuous and reliable physiological parameter acquisition across the entire 360° circumferential range. Users do not need to pay attention to the ring's orientation or perform any manual calibration; they can obtain effective monitoring results in any wearing state. For smart rings 100 of different sizes, the actual distance between the first optical region 200a and the second optical region 200b may also be different. The arc angle α can define the arc length and distance between the first optical region 200a and the second optical region 200b in the circumferential direction.

[0037] like Figure 3 As shown, in this embodiment, when determining the specific positions of the first optical region 200a and the second optical region 200b, the selection is based on the fact that the arc angle α1 corresponding to the first arc between the center point of the first optical region 200a and the center point of the second optical region 200b satisfies 120°≤α1<180°, and the arc angle β corresponding to the second arc is greater than 180°. After determining the angles corresponding to the first and second arcs between the first optical region 200a and the second optical region 200b, their specific positions can be determined. Therefore, there is no need to consider the differences in inner diameter and circumference between smart rings 100 of different sizes or ring openings. That is, in practical implementation, the arc angle between the first optical region 200a and the second optical region 200b does not change with the change of the inner ring body 111a of the smart ring 100.

[0038] like Figure 3As shown, in this embodiment, the arc corresponding to the arc angle α1 is the first arc. The first arc and the second arc together form the inner circumference of the smart ring 100. The angle β1 corresponding to the second arc is greater than 180°. In specific implementation, the ring space corresponding to the first arc can be used to accommodate the first photoplethysmography sensor 300, the second photoplethysmography sensor 400, and the battery. The space corresponding to the second arc can be used to accommodate the circuit board or other electronic components.

[0039] In one embodiment, the positions of the first optical region 200a and the second optical region 200b can be determined based on the radius of the inner ring body 111a of the smart ring 100. Figure 4 A schematic cross-sectional view of a smart ring 100 provided in one embodiment of this application is shown. Figure 2 Combining Figure 3 and Figure 4 , Figure 3 The inner ring body 111a of the smart ring 100 shown has a radius R1 greater than that of the inner ring body 111a. Figure 4 The inner body 111a of the smart ring 100 shown has a radius R2. Correspondingly, in Figure 4 The angle α2 corresponding to the first arc between the first optical region 200a and the second optical region 200b in the smart ring 100 shown is less than Figure 3 The angle α1 corresponding to the first arc between the first optical region 200a and the second optical region 200b in the smart ring 100 shown.

[0040] With the above scheme, a composite hole 120 is formed around the inner periphery of the annular shell 110. This hole 120 serves as a wearing hole for the user's finger to pass through. The inner periphery of the annular shell 110 contacts the skin of the finger when the smart ring 100 is worn. By setting a first optical region 200a and a second optical region 200b circumferentially on the inner periphery of the annular shell 110, and symmetrically distributing them along the central axis of the smart ring 100, the arc angle α corresponding to the arc between the center point of the first optical region 200a and the center point of the second optical region 200b satisfies 120°≤α<180°. This ensures that regardless of the circumferential wearing angle of the ring, at least one optical region can be aligned with the effective detection area of ​​the finger (an area rich in soft tissue and densely distributed blood vessels). Even if the first photoplethysmography sensor 300 fails due to rotational displacement into the bone-obstructed area, the second photoplethysmography sensor 400 can still maintain effective light energy output and reception, thereby eliminating the strong dependence on the wearing angle of the ring and realizing continuous and reliable physiological parameter acquisition within a 360° circumferential range. Users do not need to pay attention to the direction the ring is worn, nor do they need to perform any manual calibration operations, and can obtain effective monitoring results in any wearing state.

[0041] In the embodiments of this application, the light emitting component and the light receiving component in the photoplethysmography (PPG) sensor can be a single-piece sensor or a split sensor.

[0042] like Figure 3 As shown in the figure, as an embodiment, the first photoplethysmography (PPG) sensor 300 includes a first light emitting component 310 and a first light receiving component 320 arranged adjacent to each other, and the second PPG sensor 400 includes a second light emitting component 410 and a second light receiving component 420 arranged adjacent to each other.

[0043] In this embodiment, the first light emitting component 310 is used to output first light energy toward one side of the finger. The second light emitting component 410 is used to output second light energy toward the other side of the finger. The first light receiving component 320 is used to receive first reflected light formed by the reflection of the first light energy through the finger, and to receive first transmitted light of the second light energy through the finger. The second light receiving component 420 is used to receive second reflected light formed by the reflection of the second light energy through the finger, and to receive second transmitted light of the second light energy through the finger.

[0044] Specifically, the first light emitting component 310 outputs first light energy towards one side of the finger. This first light energy acts on one side of the finger, allowing the finger to reflect part of the light to the first light receiving component 320. Simultaneously, some of the light can also pass through the finger tissue and act on the second light receiving component 420, thus forming a first reflected light path and a first transmitted light path. The second light emitting component 410 outputs second light energy towards the other side of the finger. This second light energy acts on the other side of the finger, allowing the finger to reflect part of the light to the second light receiving component 420. Simultaneously, some of the light can also pass through the finger tissue and act on the first light receiving component 320, thus forming a second reflected light path and a second transmitted light path.

[0045] Figure 9 This is a schematic diagram of the transmission and reflection light paths of the smart ring 100 in this embodiment, as shown below. Figure 9As shown, a first reflected light path is formed between the first light emitting component 310 and the first light receiving component 320, and a first transmitted light path is formed between the first light emitting component 310 and the second light receiving component 420; a second reflected light path is formed between the second light emitting component 410 and the second light receiving component 420, and a second transmitted light path is formed between the second light emitting component 410 and the first light receiving component 320. The first photoplethysmography (PPG) sensor 300 and the second PPG sensor 400 cooperate to form a transmitted light path, and each can also form a reflected light path. When the user wears the device, and both the first PPG sensor 300 and the second PPG sensor 400 are located in the effective monitoring area, the first transmitted light path, the first reflected light path, the second transmitted light path, and the second reflected light path are all in the optimal state of light signal. At this time, the first light receiving component 320 can receive the first reflected light when the first light emitting component 310 is working, and receive the first transmitted light when the second light emitting component 410 is working. Similarly, the second light receiving component 420 can receive the second reflected light when the second light emitting component 410 is working, and receive the second transmitted light when the first light emitting component 310 is working.

[0046] It is readily understood that, in this embodiment, when the first photoplethysmography (PPG) sensor 300 is disposed in the first optical region 200a, the light emission direction of the first PPG sensor 300 is a first direction; when the second PPG sensor 400 is disposed in the second optical region 200b, the light emission direction of the second PPG sensor 400 is a second direction, wherein the first direction and the second direction are opposite. Based on this, when the first PPG sensor 300 and the second PPG sensor 400 work together, when the first light emitting component 310 outputs first light energy to one side of the finger, not only can the first light receiving component 320 receive the first reflected light formed by the reflection of the first light energy by the finger, but the second light receiving component 420 can also receive the first transmitted light of the second light energy passing through the finger. When the second light emitting component 410 outputs second light energy to the other side of the finger, not only can the second light receiving component 420 receive the second reflected light formed by the reflection of the second light energy by the finger, but the first light receiving component 320 can also receive the second transmitted light of the second light energy passing through the finger.

[0047] exist Figure 3In the illustrated embodiment, the first light emitting component 310 and the second light receiving component 420 are opposite each other. That is, the straight-line distance between the first light emitting component 310 and the second light receiving component 420 is less than the straight-line distance between the first light emitting component 310 and the second light receiving component 420, and vice versa. In this way, when the second light receiving component 420 and / or the first light receiving component 320 receive transmitted light, the transmitted light can be received at the shortest possible distance.

[0048] exist Figure 3 In the embodiment shown, the first optical emitting component 310 is opposite to the second optical emitting component 410, and the first optical receiving component 320 is opposite to the second optical receiving component 420.

[0049] by Figure 3 The extension line of radius R1 of the inner ring body 111a of the smart ring 100 shown serves as the axis of symmetry. In other embodiments, the first photoplethysmography (PPG) sensor 300 and the second PPG sensor 400 can be arranged symmetrically along this axis of symmetry (not shown in the figure). For example, the first light emitting component is opposite to the first light receiving component, and the first light receiving component is opposite to the second light receiving component.

[0050] exist Figure 4 In one embodiment shown, the first optical emitting component 310 is opposite to the second optical emitting component 410, and the first optical receiving component 320 is opposite to the second optical receiving component 420. For example... Figure 4 The radius R2 of the inner ring body 111a of the smart ring 100 shown is taken as the axis of symmetry with the extension line of the radius R2 of the inner ring body 111a of the smart ring 100. The first photoplethysmography sensor 300 and the second photoplethysmography sensor 400 are asymmetrically arranged along this axis of symmetry.

[0051] It is understandable that when a user wears the smart ring 100, they rotate the wearing angle of the ring 100 during exercise or sleep. The setting of the arc angle α ensures that at least one optical area can be aligned with the effective detection area of ​​the finger regardless of the wearing position. In this way, physiological data can be detected using at least one of the first transmitted light path, the first reflected light path, the second transmitted light path, and the second reflected light path. This enables the detection of human physiological data via the photoplethysmography (PPG) sensor, regardless of the wearing direction or angle, when the user wears the smart ring 100.

[0052] As one embodiment, the first optical region 200a and the second optical region 200b further include light-shielding components, which are respectively disposed circumferentially in the first photoplethysmography (PPG) sensor 300 and the second PPG sensor 400. The light-shielding components are used to prevent light leakage inside the first PPG sensor 300 and the second PPG sensor 400. It should be noted that preventing light leakage inside the first PPG sensor 300 and the second PPG sensor 400 specifically means preventing light leakage between the first light emitting component 310 and the first light receiving component 320 in the first PPG sensor 300, and preventing light leakage between the second light emitting component 410 and the second light receiving component 420 in the second PPG sensor 400. That is, to prevent the first light energy output by the first light emitting component 310 in the first photoplethysmography (PPG) sensor 300 from directly acting on the first light receiving component 320 without being reflected by a finger, and to prevent the second light energy output by the second light emitting component 410 in the second PPG sensor 400 from directly acting on the second light receiving component 420 without being reflected by a finger, light-shielding components need to be provided in the circumference of the first PPG sensor 300 and the circumference of the second PPG sensor 400. In actual implementation, the PPG sensor can be a one-piece sensor or a split sensor. Correspondingly, if the PPG sensor is a one-piece sensor, the light-shielding component is located in the circumference of the PPG sensor, or in the circumference of the light emitting component or the light receiving component inside it. If the PPG sensor is a split sensor, the light-shielding component is located in the circumference of the light emitting component and / or the circumference of the light receiving component.

[0053] It is easy to understand that in this embodiment, the light-shielding components are respectively disposed in the circumferential direction of the first photoplethysmography sensor 300 and the circumferential direction of the second photoplethysmography sensor 400, specifically disposed in the circumferential direction of the first light emitting component 310 and / or the first light receiving component 320, and disposed in the circumferential direction of the second light emitting component 410 and / or the second light receiving component 420.

[0054] As one possible implementation, the light-shielding component can also be a light-shielding layer disposed between the first light emitting component 310 and the first light receiving component 320, or a light-shielding layer disposed between the second light emitting component 410 and the second light receiving component 420.

[0055] like Figure 4 and Figure 5 As shown in the figure, as an embodiment, the light-shielding component includes a first light-shielding component 210a and a second light-shielding component 210b.

[0056] The first light-shielding component 210a is disposed in the circumference of the first light emitting component 310 and / or the circumference of the first light receiving component 320.

[0057] The second light-shielding component 210b is disposed in the circumference of the second light emitting component 410 and / or the circumference of the second light receiving component 420.

[0058] Specifically, Figure 4 and Figure 5 The photoplethysmography (PPG) sensor in the smart ring 100 shown is a split-type sensor. In this case, the light-shielding assembly includes a first light-shielding assembly 210a and a second light-shielding assembly 210b. The first light-shielding assembly 210a is located circumferentially to the first light emitting assembly 310 or circumferentially to the first light receiving assembly 320, and the second light-shielding assembly 210b is located circumferentially to the second light emitting assembly 410 or circumferentially to the second light receiving assembly 420. The first light-shielding assembly 210a is located circumferentially to both the first light emitting assembly 310 and the first light receiving assembly 320, and the second light-shielding assembly 210b is located circumferentially to both the second light emitting assembly 410 and the second light receiving assembly 420 (not shown in the figure). To prevent the first light energy output by the first light emitting component 310 in the first photoplethysmography sensor 300 from directly acting on the first light receiving component 320 without being reflected by a finger, a first light-shielding component 210a needs to be provided in the circumference of the first light emitting component 310 and / or the circumference of the first light receiving component 320. At the same time, to prevent the second light energy output by the second light emitting component 410 in the second photoplethysmography sensor 400 from directly acting on the second light receiving component 420 without being reflected by a finger, a second light-shielding component 210b needs to be provided in the circumference of the second light emitting component 410 and / or the circumference of the second light receiving component 420.

[0059] For example, in a specific implementation, the first light-shielding component 210a and the second light-shielding component 210b can be light-shielding foam, light-shielding cotton sheet, light-shielding partition, light-shielding tape, light-shielding silicone ring, or other components capable of providing light-shielding. Figure 8a As shown, when the first light-shielding component 210a is disposed in the circumferential direction of the first light-emitting component 310 and / or the circumferential direction of the first light-receiving component 320, and the second light-shielding component 210b is disposed in the circumferential direction of the second light-emitting component 410 and / or the circumferential direction of the second light-receiving component 420, the first light-shielding component 210a and the second light-shielding component 210b can be single-hole light-shielding rings.

[0060] like Figure 8b As shown, in one embodiment, the first photoplethysmography sensor 300 and / or the second photoplethysmography sensor 400 are one-piece sensors, and the light-shielding assembly includes a third light-shielding assembly 211; the third light-shielding assembly 211 is configured as a dual-through-hole structure adapted to the one-piece sensor.

[0061] Specifically, when the first photoplethysmography (PPG) sensor 300 and / or the second PPG sensor 400 are one-piece sensors, the light-shielding assembly includes a third light-shielding assembly 211; the third light-shielding assembly 211 is configured as a dual-through-hole structure adapted to the one-piece sensor, such as... Figure 8b As shown, the third light-shielding component 211 can be disposed in the circumference of the first photoplethysmography sensor 300, or it can be disposed in the circumference of both the first photoplethysmography sensor 300 and the second photoplethysmography sensor 400.

[0062] Furthermore, the third light-shielding component 211 can be a light-shielding ring made of light-shielding foam, light-shielding cotton sheet, light-shielding partition, light-shielding tape, or light-shielding silicone, or other components capable of providing light-shielding. The third light-shielding component 211 can be a double-hole light-shielding ring, where the two holes are respectively used to accommodate the light-emitting component and the light-receiving component, while preventing light leakage. In the embodiments of this application, such as... Figure 3 As shown, the annular shell 110 includes an outer shell 112 and an inner ring body 111a. The inner ring body 111a is a molded body cast and solidified on the inner circumferential surface of the outer shell 112. The first photoplethysmography (PPG) sensor 300 and the second PPG sensor 400 are enclosed in the molded body.

[0063] In one embodiment, Figure 4 The inner ring body 111a of the smart ring 100 shown is also a molded body cast and solidified on the inner circumferential surface of the outer shell 112. Figure 3 and Figure 4 A schematic diagram of the cross-section of a smart ring 100 with different radii.

[0064] Specifically, such as Figure 3 and Figure 4As shown, the annular shell 110 includes an outer shell 112 and an inner ring body 111a, which can be cast using a mold. When the inner ring body 111a is integrally cast, it can also be considered the ring body of the smart ring 100. For example, the outer shell 112 and various functional modules of the smart ring 100 can be configured in a pre-set casting mold, and the inner ring body 111a can be cast using a transparent medium such as transparent resin. The transparent medium not only improves the light emission and reception of the first photoplethysmography sensor 300 and the second photoplethysmography sensor 400, but also gives the smart ring 100 good waterproof functionality. It is easy to understand that the functional modules of the smart ring 100 can include components such as a circuit board, processor, communication unit, memory, sensor, and battery, used to realize various functions of the smart ring 100. For example, the sensors can include motion sensors and biosensors. Motion sensors can include gyroscopes, accelerometers, magnetometers, etc., used to detect the user's movement information when wearing the smart ring 100. Biosensors can include photoplethysmography (PPG) sensors, electrocardiogram (ECG) sensors, temperature sensors, etc., used to acquire human biological information, such as heart rate, blood oxygen, blood pressure, oxygen uptake, etc. Understandably, all of the above sensors are mounted on the circuit board.

[0065] Furthermore, the outer shell 112 is preferably a metal shell, which has high strength and can be made very thin and not easily deformed, thereby ensuring the safety of the internal components while making the ring as thin and light as possible.

[0066] In another embodiment of this application, such as Figure 5 As shown, Figure 5 A smart ring 100 forms a cavity 113 for an inner shell 111b and an outer shell 112. The annular shell 110 includes an outer shell 112 and an inner shell 111b. The inner shell 111b is disposed along the inner periphery of the outer shell 112, and the two cooperate to form a cavity 113. A first photoplethysmography (PPG) sensor 300 and a second PPG sensor 400 are disposed in the cavity 113.

[0067] In another embodiment of this application, such as Figure 6 As shown, Figure 6 The smart ring 100 forms a cavity 113 for the inner shell 111b and the outer shell 112. Figure 6 and Figure 5 The specific structures of their optical regions differ.

[0068] Specifically, the annular housing 110 includes an outer shell 112 and an inner shell 111b. The inner shell 111b cooperates with the outer shell 112 to form a receiving cavity 113 between them. This receiving cavity 113 is used to house functional modules that enable the smart ring 100 to perform its functions, such as circuit boards, sensors, and batteries.

[0069] Furthermore, the inner shell 111b can be a pre-formed shell, such as a pre-formed transparent shell, which is fixed to the outer shell 112 by mortise and tenon joints and / or adhesive bonding. It can also be connected by snap-fit, slots, or other methods. The inner shell 111b can also be made of metal. The inner shell 111b and the outer shell 112 form a receiving cavity 113, and the inner shell 111b and the outer shell 112 are connected by mortise and tenon joints, adhesive bonding, snap-fit, slots, or other methods.

[0070] like Figure 3 and Figure 4 As shown, in one embodiment, the first optical region 200a includes a first light-transmitting protrusion 220a protruding from the inner circumferential surface of the inner ring body 111a. The first light-transmitting protrusion 220a is used to converge light. As one embodiment, in... Figure 3 and Figure 4 In the middle, the second optical region 200b includes a second light-transmitting protrusion 220b protruding from the inner circumferential surface of the inner ring body 111a, the second light-transmitting protrusion 220b being used to concentrate light.

[0071] Specifically, when the inner ring body 111a is a molded body cast and solidified on the inner circumferential surface of the outer shell 112, the inner ring body 111a has a first light-transmitting protrusion 220a near the finger on its inner circumference. The first light-transmitting protrusion 220a is used to concentrate light, and the protrusion direction of the first light-transmitting protrusion 220a corresponds to the outer circumference on the side of the finger. The first light-transmitting protrusion 220a corresponds to the first photoplethysmography (PPG) sensor 300 and the first light-transmitting protrusion 220a corresponds to the first light emitting component 310. The first light energy emitted is focused; or the second optical region 200b includes a second light-transmitting protrusion 220b protruding from the inner circumferential surface of the inner ring body 111a. The second light-transmitting protrusion 220b is used to focus the light, and the protrusion direction of the second light-transmitting protrusion 220b corresponds to the outer circumference of the other side of the finger. The second light-transmitting protrusion 220b corresponds to the second photoplethysmography sensor 400, and the second light-transmitting protrusion 220b focuses the second light energy emitted by the second light emitting component 410. In some embodiments, the first light-transmitting protrusion 220a and the second light-transmitting protrusion 220b are also disposed on the inner circumference of the inner ring body 111a.

[0072] Furthermore, when the inner ring body 111a is integrally cast, the first light-transmitting protrusion 220a and the second light-transmitting protrusion 220b are generated simultaneously with the casting of the inner ring body 111a by casting a transparent medium such as transparent resin. For example, various functional modules in the smart ring 100 of the outer shell 112 are configured in a preset casting mold, and the inner ring body 111a is cast by casting a transparent medium such as transparent resin, while the first light-transmitting protrusion 220a and / or the second light-transmitting protrusion 220b are formed.

[0073] In other embodiments, such as Figure 5 As shown, the inner housing 111b can be a pre-formed housing, such as a pre-formed transparent housing, on which a first light-transmitting protrusion 220a and / or a second light-transmitting protrusion 220b are pre-set. The fact that the inner housing 111b is made of transparent material facilitates the emission of light energy by the first light-emitting component 310 and the second light-emitting component 410, ensuring that any light-transmitting protrusion within any optical region can satisfy both light emission and reception.

[0074] As one possible approach, the structure of the first light-transmitting protrusion 220a and the second light-transmitting protrusion 220b can be such that the central raised edge transitions gently and fits into the structure of the inner ring body 111a. This would avoid the sharpness of the first light-transmitting protrusion 220a and the second light-transmitting protrusion 220b, thus improving wearing comfort.

[0075] like Figure 5 As shown, in one embodiment, the first optical region 200a includes a first light-transmitting window 230a disposed on the inner housing 111b, and the first light-transmitting window 230a is correspondingly disposed with the first photoplethysmography (PPG) sensor 300. As one embodiment, in... Figure 5 In the second optical region 200b, a second light-transmitting window 230b is provided on the inner housing 111b, and the second light-transmitting window 230b is correspondingly provided with the second photoplethysmography sensor 400.

[0076] Specifically, the inner housing 111b is disposed along the inner periphery of the outer housing 112, and the two cooperate to form a receiving cavity 113. When the material of the inner housing 111b is opaque, a first light-transmitting window 230a is provided on the inner housing 111b. The first light-transmitting window 230a is correspondingly disposed with the first photoplethysmography sensor 300. At this time, the first light emitting component 310 and the first light receiving component 320 in the first photoplethysmography sensor 300 share the first light-transmitting window 230a; or a second light-transmitting window 23 is provided on the inner housing 111b. 0b, the second light-transmitting window 230b is set correspondingly to the second photoplethysmography (PPG) sensor 400. In this case, the second light emitting component 410 and the second light receiving component 420 in the second PPG sensor 400 share the second light-transmitting window 230b; or the inner housing 111b is provided with a first light-transmitting window 230a and a second light-transmitting window 230b, the first light-transmitting window 230a is set correspondingly to the first PPG sensor 300, and the second light-transmitting window 230b is set correspondingly to the second PPG sensor 400.

[0077] In one embodiment of this application, such as Figure 6 As shown, the first optical region 200a also includes a third light-transmitting window 231a disposed on the inner shell 111b. The third light-transmitting window 231a is spaced apart from the first light-transmitting window 230a. The first light-transmitting window 230a is correspondingly disposed with the first light emitting component 310, and the third light-transmitting window 231a is correspondingly disposed with the first light receiving component 320. Along the circumference of the smart ring 100, the lengths of the first light-transmitting window 230a and the third light-transmitting window 231a are both greater than the lengths of the first light emitting component 310 and the first light receiving component 320, so that the first light emitting component 310 can emit the first light energy evenly, and at the same time, the first light receiving component 320 can receive the first light energy and the second light energy to the maximum extent. The second optical region 200b also includes a fourth light-transmitting window 231b disposed on the inner housing 111b. The fourth light-transmitting window 231b is spaced apart from the second light-transmitting window 230b. The second light-transmitting window 230b is correspondingly disposed with the second light emitting component 410, and the fourth light-transmitting window 231b is correspondingly disposed with the second light receiving component 420. Along the circumference of the smart ring 100, the lengths of the second light-transmitting window 230b and the fourth light-transmitting window 231b are both greater than the lengths of the second light emitting component 410 and the second light receiving component 420, so that the second light emitting component 410 can emit the second light energy uniformly, and at the same time, the second light receiving component 420 can also receive the first light energy and the second light energy to the maximum extent.

[0078] As one possible implementation, the first light-transmitting window 230a, the second light-transmitting window 230b, the third light-transmitting window 231a, and the fourth light-transmitting window 231b can be transparent inserts. These inserts are disposed on the inner shell 111b, flush with or protruding from the inner circumferential surface of the inner shell 111b. In actual implementation, when the light-transmitting window protrudes from the inner circumferential surface of the inner shell 111b, the light-transmitting window can have a centrally raised edge with a gently sloping transition that fits snugly against the structure of the inner shell 111b. This avoids the sharpness of the light-transmitting window and improves wearing comfort.

[0079] In other embodiments of this application, the first light-transmitting window 230a and / or the second light-transmitting window 230b are filled with a light-transmitting medium, which is flush with the inner peripheral surface of the inner shell 111b, or the light-transmitting medium protrudes from the inner peripheral surface of the inner shell 111b.

[0080] More specifically, when the light-transmitting medium protrudes from the inner circumferential surface of the inner shell 111b, it serves the same function as the light-transmitting protrusion, concentrating light. The light-transmitting medium is at least one of optical resin, quartz glass, or transparent ceramic, and can also be other materials capable of achieving light transmission. In practical implementation, when the light-transmitting medium protrudes from the inner circumferential surface of the inner shell 111b, the light-transmitting medium can be centrally raised with a gently sloping edge that fits snugly against the structure of the inner shell 111b. This avoids the sharpness of the light-transmitting medium and improves wearing comfort. It is understood that when the material of the inner shell 111b is opaque, the light-transmitting medium can be formed on the inner shell 111b by injection molding, or it can be formed by injection molding into the space enclosed by the inner shell 111b and the outer shell 112 after they are fastened together.

[0081] As one possible implementation, the third light-transmitting window 231a and / or the fourth light-transmitting window 231b are filled with a light-transmitting medium, which is flush with the inner peripheral surface of the inner housing 111b, or the light-transmitting medium protrudes from the inner peripheral surface of the inner housing 111b.

[0082] In another embodiment of this application, such as Figure 7 As shown, Figure 7This is another cross-sectional schematic diagram of the first optical region 200a and the second optical region 200b. When the inner ring body 111a is a molded body cast and solidified on the inner circumferential surface of the outer shell 112, and when the inner ring body 111a is made of an opaque material, the combination of the light-transmitting protrusion and the light-transmitting window enables the light emission and light reception of the photoplethysmography sensor. The first optical region 200a includes a first light-transmitting protrusion 220a and a first light-transmitting window 230a. The first light-transmitting protrusion 220a protrudes from the inner circumferential surface of the inner ring body 111a and faces the skin to be tested. The first light-transmitting window 230a is covered by the molded body and is in contact with the first light-transmitting protrusion 220a. The first light-transmitting window 230a is correspondingly set with the first photoplethysmography sensor 300. Alternatively, the second optical region 200b includes a second light-transmitting protrusion 220b and a second light-transmitting window 230b. The second light-transmitting protrusion 220b protrudes from the inner circumferential surface of the inner ring body 111a and faces the skin to be tested. The second light-transmitting window 230b is enclosed within the molded body and contacts the second light-transmitting protrusion 220b. The second light-transmitting window 230b is correspondingly disposed with the second photoplethysmography (PPG) sensor 400. In another embodiment of this application, such as... Figure 7 As shown, the first optical region 200a includes a first light-transmitting protrusion 220a and a first light-transmitting window 230a, and the second optical region 200b includes a second light-transmitting protrusion 220b and a second light-transmitting window 230b.

[0083] In summary, the inner circumference of the annular housing 110 contacts the finger skin when the smart ring 100 is worn. By circumferentially arranging a first optical region 200a and a second optical region 200b on the inner circumference of the annular housing 110, and symmetrically distributing them along the central axis of the smart ring 100, the arc angle α corresponding to the arc between the center point of the first optical region 200a and the center point of the second optical region 200b satisfies 120°≤α<180°. This ensures that regardless of the circumferential wearing angle of the ring, at least one optical region can be aligned with the effective detection area of ​​the finger (an area rich in soft tissue and densely distributed blood vessels). Even if the first photoplethysmography (PPG) sensor 300 fails due to rotational displacement into a bone-obstructed area, the second PPG sensor 400 can still maintain effective light energy output and reception, thereby eliminating the strong dependence on the wearing angle of the ring and achieving continuous and reliable physiological parameter acquisition within a 360° circumferential range. Users do not need to pay attention to the wearing orientation of the ring or perform any manual calibration operations to obtain effective monitoring results in any wearing state.

[0084] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solution of this utility model. In specific applications, those skilled in the art can make settings as needed, and this utility model does not impose any restrictions on this.

[0085] It should be noted that the steps described above are merely illustrative and do not limit the scope of protection of this utility model. In practical applications, those skilled in the art can select some or all of them to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here. The steps of the method described in this application are not limited to being executed sequentially according to the order in the specification; without changing the core technical solution, the execution order of some steps can be adjusted, implemented in parallel, or steps can be omitted or added in different scenarios. The above modifications or equivalent substitutions do not affect the substantive content of the technical solution of this application and should all fall within the scope of protection of this application.

[0086] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. The scope of protection of this application should be determined by the scope of the claims. Although this application has disclosed the preferred embodiment above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall fall within the scope of the technical solution of this application.

Claims

1. A smart ring, characterized in that, The device includes an annular housing. The inner circumference of the annular housing contacts the skin of the finger when the smart ring is worn. The inner circumference of the annular housing is provided with a first optical region and a second optical region, and the first optical region and the second optical region are symmetrical about the central axis of the smart ring. A first photoplethysmography (PPG) sensor is provided in the first optical region, and a second PPG sensor is provided in the second optical region. The arc angle α corresponding to the arc between the center point of the first optical region and the center point of the second optical region satisfies 120°≤α<180°.

2. The smart ring according to claim 1, characterized in that, The first photoplethysmography (PPG) sensor includes a first light emitting component and a first light receiving component arranged adjacent to each other, and the second PPG sensor includes a second light emitting component and a second light receiving component arranged adjacent to each other. The first light emitting component is used to output first light energy toward the side of the finger; The second light-emitting component is used to output a second light energy toward the other side of the finger; The first light receiving component is used to receive first reflected light formed by the reflection of the first light energy by the finger, and to receive first transmitted light of the second light energy through the finger; The second light receiving component is used to receive second reflected light formed by the reflection of the second light energy through the finger, and to receive second transmitted light formed by the second light energy passing through the finger.

3. The smart ring according to claim 2, characterized in that, The first optical region and the second optical region each include a light-shielding component, which is respectively disposed in the circumferential direction of the first photoplethysmography sensor and the circumferential direction of the second photoplethysmography sensor. The light-shielding component is used to prevent light leakage inside the first photoplethysmography sensor and to prevent light leakage inside the second photoplethysmography sensor.

4. The smart ring according to claim 3, characterized in that, The light-shielding component includes a first light-shielding component and a second light-shielding component; The first light-shielding component is disposed in the circumferential direction of the first light emitting component and / or the circumferential direction of the first light receiving component; The second light-shielding component is disposed circumferentially in the second light-emitting component and / or circumferentially in the second light-receiving component.

5. The smart ring according to claim 3, characterized in that, The first photoplethysmography sensor and / or the second photoplethysmography sensor are one-piece sensors; The light-shielding assembly includes a third light-shielding assembly; the third light-shielding assembly is configured as a dual-through-hole structure adapted to the one-piece sensor.

6. The smart ring according to any one of claims 1-5, characterized in that, The annular shell includes an outer shell and an inner ring body. The inner ring body is a molded body cast and solidified on the inner peripheral surface of the outer shell. The first photoplethysmography (PPG) sensor and the second PPG sensor are enclosed within the molded body.

7. The smart ring according to any one of claims 1-5, characterized in that, The annular housing includes an outer shell and an inner shell. The inner shell is disposed along the inner periphery of the outer shell, and the two together form a receiving cavity. The first photoplethysmography (PPG) sensor and the second PPG sensor are disposed within the receiving cavity.

8. The smart ring according to claim 6, characterized in that, The first optical region includes a first light-transmitting protrusion protruding from the inner circumferential surface of the inner ring body, the first light-transmitting protrusion being used to concentrate light; And / or the second optical region includes a second light-transmitting protrusion protruding from the inner circumferential surface of the inner ring body, the second light-transmitting protrusion being used to focus light.

9. The smart ring according to claim 7, characterized in that, The first optical region includes a first light-transmitting window disposed on the inner housing, and the first light-transmitting window is correspondingly disposed to the first photoplethysmography sensor; And / or the second optical region includes a second light-transmitting window disposed on the inner housing, the second light-transmitting window being disposed corresponding to the second photoplethysmography sensor.

10. The smart ring according to claim 9, characterized in that, The first light-transmitting window is filled with a light-transmitting medium, which is flush with the inner circumferential surface of the inner shell, or the light-transmitting medium protrudes from the inner circumferential surface of the inner shell. And / or the second light-transmitting window is filled with a light-transmitting medium, which is flush with the inner circumferential surface of the inner shell, or the light-transmitting medium protrudes from the inner circumferential surface of the inner shell.

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