Smart ring

Abstract

Disclosed in the present invention is a smart ring, relating to the technical field of smart wearable devices. The smart ring comprises a ring body and a detection assembly. A through hole for a finger to pass through is formed in the ring body. The ring body comprises an outer ring and an inner ring. The outer ring is sleeved outside the inner ring and forms a mounting space with the inner ring. A circuit board and a battery for supplying power to the circuit board are arranged in the mounting space. The detection assembly comprises a VPU acquisition module, a PPG acquisition module, an ECG acquisition module, and an optical module, which are mounted on the circuit board and are in communication with the circuit board. According to the present invention, a plurality of heart sound detection modules are integrated in the smart ring. The smart ring has a small volume and high wearing comfort, and is convenient to carry for a long time, so that heart sound data of a user in various states at various times are conveniently collected for analysis for a long time, thereby improving the accuracy of analyzing the heart sound data of the user.

Description

Smart ring TECHNICAL FIELD

[0001] The present application relates to the technical field of smart wearable devices, and particularly relates to a smart ring. BACKGROUND

[0002] Human heart sound data can be used to determine the health status, and currently, doctors usually use a stethoscope or an electronic auscultation device to collect heart audio data. The doctor determines the health status of the body by experience. The accuracy of data determination depends on the experience of the doctor, and the physical condition of each person is different, and there is no standard data display, so the error rate of manual auscultation is high, and accurate judgment is usually not possible.

[0003] At present, with the breakthrough and outbreak of big data and AI technology, human heart sound data can be collected through smart wearable devices to realize personal health and long-term data collection, so as to collect enough heart sound data for analysis. However, the existing smart wearable devices are usually large in size, low in wearing comfort, and inconvenient to wear for a long time, so they cannot collect heart sound data uninterruptedly. SUMMARY

[0004] The main purpose of the present application is to provide a smart ring, which aims to solve the problem of large size, low wearing comfort and inconvenience to wear for a long time of the smart wearable device in the prior art.

[0005] To achieve the above purpose, the smart ring provided by the present application comprises:

[0006] A ring body, the ring body is formed with a through hole for a finger to pass through, the ring body comprises an outer ring and an inner ring, the outer ring is sleeved outside the inner ring and surrounds the inner ring to form a mounting space, and the mounting space is provided with a circuit board and a battery for supplying power to the circuit board;

[0007] A detection assembly, the detection assembly comprises a VPU acquisition module, a PPG acquisition module, an ECG acquisition module and an optical module installed on and in conduction with the circuit board, the optical module is arranged towards the inner ring, and the optical module is used to emit light to the finger passing through the through hole and receive the reflected light from the finger to generate an optical signal, the PPG acquisition module is used to generate a photoelectric volume diagram according to the optical signal, the ECG acquisition module is used to collect the potential signal of the finger and generate an electrocardiogram, and the VPU acquisition module is used to collect heart sound signals.

[0008] In an embodiment, the inner wall of the inner ring corresponds to the positions of the VPU acquisition module, the PPG acquisition module, the ECG acquisition module and the optical module, and each of the positions is provided with an elastic boss, the elastic boss is arranged protruding inward, so that the side of the elastic boss facing outward forms a cavity, and the elastic boss is made of transparent material, the VPU acquisition module, the PPG acquisition module, the ECG acquisition module and the optical module are arranged in the cavities of the corresponding elastic bosses respectively, and the elastic boss is used to deform outward when being pressed by a finger.

[0009] In an embodiment, the VPU acquisition module, the PPG acquisition module and the ECG acquisition module are arranged at intervals along the circumference of the inner ring, and the VPU acquisition module is located between the PPG acquisition module and the ECG acquisition module, and the battery and the VPU acquisition module correspond to the back of the finger and the palm of the finger respectively when the finger passes through the through hole.

[0010] In an embodiment, the optical module includes a photodiode and a light-emitting module, the light-emitting module includes a plurality of light-emitting units, the spectrum and wavelength of each of the light-emitting units are different, and the light-emitting units are arranged at intervals along the circumference of the inner ring on the circuit board and used to emit light to the finger, and the photodiode is used to receive the light reflected from the finger to generate an optical signal.

[0011] In an embodiment, the outer periphery of each of the photodiodes is provided with a barrier wall, and the side of the barrier wall facing the through hole is provided with an opening for light to pass through.

[0012] In an embodiment, the outer ring, the inner ring and the circuit board are concentrically arranged as annular rings, the light-emitting units include green light-emitting diodes (LEDs) and red LEDs, the central angle formed by the green LEDs and the photodiode is 25°-45°, and the central angle formed by the red LEDs and the photodiode is 35°-65°.

[0013] In an embodiment, the number of the photodiodes is two, the photodiodes are arranged at intervals along the circumference of the inner ring, and the light-emitting module is located between the two photodiodes.

[0014] Alternatively, the number of the photodiodes is one, the light-emitting module is located on one side of the circuit board, the line between the palm of the finger and the back of the finger is a symmetry axis when the finger passes through the through hole, and the photodiode and the light-emitting module are symmetrically arranged based on the symmetry axis.

[0015] Alternatively, the number of the photodiodes is one, and the photodiode is located between any two adjacent light-emitting units in the light-emitting module.

[0016] In an embodiment, the cross-sectional dimension of the boss is tapered from outside to inside, and the boss has a protruding height greater than or equal to 1 mm.

[0017] In an embodiment, the outer ring has a protruding portion protruding outward corresponding to the position of the VPU acquisition module, and a receiving cavity is formed on the inward side of the protruding portion, and the VPU acquisition module is encapsulated in the receiving cavity and abuts against the outer ring.

[0018] In an embodiment, the outer side of the outer ring is provided with a hard contact point protruding outward from the outer ring, and the inward side of the hard contact point forms a mounting cavity for accommodating the VPU acquisition module, and a rigid support is arranged in the outer ring, and an elastic member is mounted on the rigid support, and the contact point shell is used to push the VPU acquisition module and drive the elastic member to compress when subjected to pressure.

[0019] The technical scheme of the present application communicates the VPU acquisition module, the PPG acquisition module, the ECG acquisition module and the optical module on the circuit board, and then covers and shields the above-mentioned modules by the inner ring, so that the user does not feel uncomfortable when wearing the smart ring, improves the wearing comfort, detects the photoplethysmogram through the cooperation between the PPG acquisition module and the optical module, and generates the electrocardiogram through the ECG acquisition module, thereby monitoring the user in real time, and when the heart sound signal is needed, the ring is attached to the user's chest, thereby collecting the heart sound signal through the VPU acquisition module. The present application integrates various heart sound detection modules in the smart ring, and the smart ring has small volume and high wearing comfort, is convenient for long-time carrying, thereby being convenient for long-time collection of heart sound data of the user in various time and various states for analysis, and improves the accuracy of analysis of the heart sound data of the user. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0021] Fig. 1 is a structural schematic view of an embodiment of the smart ring provided by the present application;

[0022] Fig. 2 is a cross-sectional structural schematic view of an embodiment of the smart ring provided by the present application;

[0023] Fig. 3 is a structural schematic view of another embodiment of the smart ring provided by the present application;

[0024] Fig. 4 is a structural schematic diagram of a circuit board of an embodiment of the smart ring provided by the present application;

[0025] Fig. 5 is a structural schematic diagram of an inner ring of an embodiment of the smart ring provided by the present application;

[0026] Fig. 6 is a side view structural schematic diagram of an embodiment of the smart ring provided by the present application;

[0027] Fig. 7 is a side view structural schematic diagram of another embodiment of the smart ring provided by the present application;

[0028] Fig. 8 is a partial structural schematic diagram of an embodiment of the smart ring provided by the present application;

[0029] Fig. 9 is a schematic diagram of the positional relationship of an optical module of an embodiment of the smart ring provided by the present application.

[0030] Brief Description of the Drawings: 100, smart ring; 1, ring body; 11, outer ring; 111, protruding part; 112, accommodating cavity; 113, hard contact; 114, rigid support; 115, elastic member; 12, inner ring; 121, elastic boss; 13, circuit board; 14, battery; 15, through hole; 2, detection assembly; 21, VPU acquisition module; 22, PPG acquisition module; 23, ECG acquisition module; 24, optical module; 241, photodiode; 242, light emitting unit; 243, retaining wall; 244, opening.

[0031] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0034] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0035] The existing battery module is transported by a single roller line, and the logistics forklift can only transport one tray containing the battery module to the input port of the conveying line at a time, so the logistics forklift needs to supplement the battery module in time, and therefore the number of stored battery modules is small, the module consumption speed is fast, the battery module supply speed is insufficient due to the transportation of a single tray each time, and the production efficiency is reduced. At the same time, the forklift operator needs to place the tray to the input port or take it away from the output port, and the forklift operator has a large amount of work.

[0036] To solve the above problems, the present application provides an intelligent ring 100.

[0037] Please combine FIG. 1, FIG. 2, FIG. 4 and FIG. 5, in an embodiment of the present application, the intelligent ring 100 includes a ring body 1 and a detection assembly 2, a through hole 15 for passing a finger is formed in the ring body 1, the ring body 1 includes an outer ring 11 and an inner ring 12, the outer ring 11 is sleeved outside the inner ring 12 and surrounds the inner ring 12 to form a mounting space, the mounting space is provided with a circuit board 13 and a battery 14 for supplying power to the circuit board 13; the detection assembly 2 includes a VPU acquisition module 21, a PPG acquisition module 22, an ECG acquisition module 23 and an optical module 24 mounted on the circuit board 13 and in conduction with the circuit board 13, the optical module 24 is arranged towards the inner ring 12, and the optical module 24 is used to emit light to the finger passing through the through hole 15 and receive the light reflected from the finger to generate an optical signal, the PPG acquisition module 22 is used to generate a photoelectric volume graph according to the optical signal, the ECG acquisition module 23 is used to acquire the potential signal of the finger and generate an electrocardiogram, and the VPU acquisition module 21 is used to acquire a heart sound signal.

[0038] It should be noted that the VPU (heart sound signal acquisition) module, the PPG (photoelectric plethysmography) acquisition module and the ECG (electrocardiogram) acquisition module are all common modules for collecting heart sound data in the prior art, and their principles of action can be found in the prior art. In addition, the outer ring 11 is usually made of rigid material to provide support for the overall shape of the ring, and the inner ring 12 is usually made of flexible material so that the inner ring 12 can deform and be close to the user's finger when the ring is worn, thereby improving the user's experience comfort. Specifically, the flexible material can be selected from soft glue materials such as silicone, TPU, TPE, or soft glue materials.

[0039] The technical scheme of the present application comprises the following steps: the VPU acquisition module 21, the PPG acquisition module 22, the ECG acquisition module 23 and the optical module 24 are all connected to the circuit board 13, and then the above modules are covered and shielded by the inner ring 12, so that the user does not feel uncomfortable when wearing the smart ring 100, thereby improving the wearing comfort. Through the cooperation between the PPG acquisition module 22 and the optical module 24, the photoelectric plethysmogram is detected and generated, and the electrocardiogram is generated by the ECG acquisition module 23, thereby real-time monitoring the user. When the heart sound signal is needed, the ring is attached to the user's chest, thereby collecting the heart sound signal by the VPU acquisition module 21. The present application integrates multiple heart sound detection modules in the smart ring 100, and the smart ring 100 has a small size and high wearing comfort, and is easy to carry for a long time, thereby facilitating long-term collection of heart sound data of the user under various conditions for analysis, and improving the accuracy of the analysis of the user's heart sound data.

[0040] Further, after the circuit board 13 is installed to the outer ring 11, the excess cavity area between the outer ring 11 and the circuit board 13 is filled by the glue filling process to fix the circuit board 13 and the outer ring 11, and the glue after solidification can also protect the circuit board 13 and the multiple modules arranged thereon, thereby improving the safety and stability.

[0041] Please combine Figure 4 and Figure 5, in an embodiment, the inner wall of the inner ring 12 corresponds to the positions of the VPU acquisition module 21, the PPG acquisition module 22, the ECG acquisition module 23 and the optical module 24. The elastic boss 121 is provided, the elastic boss 121 is provided outwardly, the side of the elastic boss 121 outwardly forms a cavity, and the plurality of elastic bosses 121 are transparent materials, the VPU acquisition module 21, the PPG acquisition module 22, the ECG acquisition module 23 and the optical module 24 are respectively arranged in the cavities of the corresponding elastic bosses 121, and the elastic boss 121 is used for deforming outwardly when being pressed by the finger. Through the cavity of the elastic boss 121, the VPU acquisition module 21, the PPG acquisition module 22, the ECG acquisition module 23 and the optical module 24 are closer to the finger of the user inserted into the through hole 15, thereby improving the accuracy of data detection. At the same time, since the elastic boss 121 is an elastic material, after the user's finger is inserted into the through hole 15, the elastic boss 121 is pressed to deform, and the user's finger is not affected, thereby improving the wearing comfort of the user.

[0042] In a specific embodiment, the material hardness of the inner ring 12 is 30-70 (Shore hardness), so that the inner ring 12 can produce appropriate deformation to match the finger profile of different users, improve the wearing comfort, the material of the elastic boss 121 is TPU, TPE, silicone, rubber and fluorine glue, etc., the hardness is 30-45 (Shore hardness), the hardness of the material of the elastic boss 121 is less than that of other areas of the inner ring 12, so as to reduce the discomfort of wearing.

[0043] Further, the VPU acquisition module 21, the PPG acquisition module 22 and the ECG acquisition module 23 are distributed along the circumference of the inner ring 12, and the VPU acquisition module 21 is located between the PPG acquisition module 22 and the ECG acquisition module 23. When the finger passes through the through hole, the battery 14 and the VPU acquisition module 21 are respectively arranged corresponding to the back of the finger and the finger pulp. The battery 14 is arranged at the position close to the center of the back of the finger, the VPU acquisition module 21 is arranged corresponding to the finger pulp, and the PPG acquisition module 22 and the ECG acquisition module 23 are respectively arranged at the two ends of the VPU acquisition module 21, so that the weight of the whole ring is uniformly distributed, and the center of gravity is kept at the center position of the intelligent ring 100, thereby improving the wearing comfort of the user.

[0044] Please refer to FIG. 9, in an embodiment, the optical module 24 comprises a photodiode 241 and a light-emitting module, the light-emitting module comprises a plurality of light-emitting units 242, the plurality of light-emitting units 242 have different spectra and wavelengths, and the plurality of light-emitting units 242 are arranged on the circuit board 13 along the circumference of the inner ring 12 and used for emitting light to the finger, and the photodiode 241 is used for receiving the light reflected from the finger to generate an optical signal. By arranging the light-emitting units 242 with different spectra and wavelengths, the detection of different heart sound data is realized. Specifically, when the PPG is measured, the heart rate measurement usually uses a green light LED (wavelength about 520nm-540nm), and the blood oxygen saturation usually uses a combination of a red light LED (typical wavelength 660nm) and an infrared light LED (typical wavelength 940nm) for measurement, so as to realize the simultaneous detection of multiple data. Then, the light reflected from the blood vessels of the finger is received by the photodiode 241, and an optical signal is generated, which is convenient for subsequent analysis of specific heart sound data according to the optical signal.

[0045] In an embodiment, the outer periphery of each photodiode 241 is provided with a barrier wall 243, and the barrier wall 243 is formed with an opening 244 for the light to pass through towards one side of the through hole 15. By shielding the circumference of the photodiode 241 with the barrier wall 243, the light of the light-emitting unit 242 or the ambient light is prevented from affecting the accuracy of the optical signal, and only the opening 244 towards the center of the through hole 15 is left, so that only the light reflected from the blood vessels can be collected by the photodiode 241, thereby maximizing the detection accuracy.

[0046] In an embodiment, the outer ring 11, the inner ring 12 and the circuit board 13 are concentrically arranged as circular rings, the light-emitting unit 242 comprises a green light LED and a red light LED, the green light LED and the photodiode 241 form a central angle of 25°-45°, and the red light LED and the photodiode 241 form a central angle of 35°-65°. The central angle between the green light LED and the photodiode 241 is smaller, because the green light is mainly used for detecting the blood flow changes of the shallow tissues to realize heart rate monitoring, such as the microvessels under the skin and the epidermis, and the smaller included angle can ensure that the detected reflected light mainly comes from these shallow tissues. The red light and the infrared light have high tissue penetration, and can penetrate the skin and deeper tissues such as muscle layers to detect the blood flow changes of deeper blood vessels. The larger included angle is helpful to capture the light reflected or transmitted from these deep tissues, so as to obtain the blood oxygen saturation through the blood flow changes of the blood vessels in the deep tissues.

[0047] In an embodiment, the number of photodiodes 241 is two, and the two photodiodes 241 are arranged along the circumference of the inner ring 12, and the light-emitting module is located between the two photodiodes 241;

[0048] In another embodiment, the number of photodiodes 241 is one, the light-emitting module is located on one side of the circuit board 13, the connection line between the finger pulp and the finger back when the finger passes through the through hole is the axis of symmetry, and the photodiode 241 and the light-emitting module are symmetrically arranged based on the axis of symmetry.

[0049] In yet another embodiment, the number of photodiodes 241 is one, and the photodiode 241 is located between any two adjacent light-emitting units 242 in the light-emitting module.

[0050] The number and position relationship between the photodiode 241 and the light-emitting module can be adjusted according to actual needs, but it is necessary to ensure that the whole is symmetrically arranged with the connection line between the finger pulp and the finger back as the axis of symmetry to ensure the position of the center of gravity.

[0051] In an embodiment, the cross-sectional size of the boss is tapered from outside to inside, and the protrusion height of the boss is greater than or equal to 1 mm. The cross-sectional size of the cavity is tapered towards the user's finger, so that the contact area between the boss and the user's finger is small, the user's finger feels less foreign body sensation, and the user's wearing comfort is improved. Specifically, the cross-sectional size of the boss can be circular or trapezoidal, and the cross-sectional size is tapered towards the user's finger while leaving a larger space for accommodating the light-emitting unit, and the design of the protrusion facilitates deformation away from the side of the finger after being pressed, reducing the foreign body sensation.

[0052] Please refer to FIGS. 3 and 7, in an embodiment, the outer ring 11 corresponds to the position of the VPU acquisition module 21 and is outwardly convex to form a convex portion 111, so that the side of the convex portion 111 facing inward forms a containing cavity 112, and the VPU acquisition module 21 is packaged in the containing cavity 112 and abuts against the outer ring 11. Through the setting of the convex portion 111, the distance between the VPU acquisition module 21 and the chest when close to the user's chest is closer, only one layer of shell spacing, improving the detection accuracy of the VPU acquisition module 21.

[0053] Further, the width of the protruding portion along the circumference of the ring is 10-20 mm, which is less than the width of a user's finger, to improve the wearing comfort.

[0054] Please combine Figure 1, Figure 2 and Figure 6, in another embodiment, the outer side of the outer ring 11 is provided with a hard contact 113 which protrudes outwardly from the outer ring 11, so that the inward side of the hard contact 113 forms a mounting cavity for accommodating the VPU acquisition module 21, and a rigid support 114 is arranged inside the outer ring 11, and an elastic element 115 is mounted on the rigid support 114, and the contact shell is used to push the VPU acquisition module 21 and drive the elastic element 115 to compress when subjected to pressure. The mounting cavity formed by the hard contact 113 allows the VPU acquisition module 21 to be exposed on the surface of the outer ring 11, so that the distance between the VPU acquisition module 21 and the chest is closer when it is close to the user's chest, only one layer of shell spacing, which improves the detection accuracy of the VPU acquisition module 21, and the setting of the elastic element 115 allows the elastic element 115 to compress after the hard contact 113 contacts the user's chest, which drives the hard contact 113 to move inwardly, leaving a movement allowance to avoid damage under pressure, or in daily life, when the user's hand is placed on the desktop, the hard contact 113 moves inwardly, reducing the user's foreign body sensation.

[0055] The material of the rigid support 114 is stainless steel, aluminum alloy, magnesium alloy, titanium alloy, etc., which is used to support and fix the elastic element 115, and the material of the elastic element 115 is TPU, TPE, silicone, rubber and fluorine glue, etc., with a hardness of 30-65 (Shore hardness), so that the elastic element 115 compresses inwardly after being pressed to provide a movement space for the hard contact 113, and the material of the hard contact 113 is a rigid material such as titanium alloy, magnesium alloy, aluminum alloy, or a silicone material with a hardness of 50-70 (Shore hardness), and after the VPU acquisition module 21 is installed in the mounting cavity of the hard contact 113, the cavity is filled with glue through a glue filling process, so that the glue solidifies to fix and protect the VPU acquisition module 21.

[0056] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A smart ring, characterized in that, include: A ring body with a through hole for a finger to pass through. The ring body includes an outer ring and an inner ring. The outer ring is fitted over the inner ring and together with the inner ring to form an installation space. A circuit board and a battery for powering the circuit board are disposed in the installation space. The detection component includes a VPU acquisition module, a PPG acquisition module, an ECG acquisition module, and an optical module mounted on and connected to the circuit board. The optical module is positioned facing the inner ring and is used to emit light to a finger passing through the through hole and to receive light reflected back from the finger to generate an optical signal. The PPG acquisition module is used to generate a photoplethysmogram based on the optical signal. The ECG acquisition module is used to acquire the potential signal of the finger and generate an electrocardiogram. The VPU acquisition module is used to acquire heart sound signals.

2. The smart ring as described in claim 1, characterized in that, The inner wall of the inner ring corresponds to the VPU acquisition module. The positions of the PPG acquisition module, the ECG acquisition module, and the optical module are all provided with elastic protrusions. The elastic protrusions are arranged to protrude inward so that the outward side of the elastic protrusion forms a cavity. All of the elastic protrusions are made of transparent material. The VPU acquisition module, the PPG acquisition module, the ECG acquisition module, and the optical module are respectively arranged in the cavities of the corresponding elastic protrusions. The elastic protrusions are used to deform outward when squeezed by a finger.

3. The smart ring as described in claim 2, characterized in that, The VPU acquisition module, the PPG acquisition module and the ECG acquisition module are distributed circumferentially along the inner ring, and the VPU acquisition module is located between the PPG acquisition module and the ECG acquisition module. When the finger passes through the through hole, the battery and the VPU acquisition module are respectively positioned on the back and pad of the finger.

4. The smart ring as described in claim 3, characterized in that, The optical module includes a photodiode and a light-emitting module. The light-emitting module includes multiple light-emitting units, each with a different spectrum and wavelength. The multiple light-emitting units are circumferentially spaced on the circuit board along the inner ring and are used to emit light to the finger. The photodiode is used to receive the light reflected back from the finger to generate an optical signal.

5. The smart ring as described in claim 4, characterized in that, Each photodiode has a baffle wall on its outer periphery, and the baffle wall has an opening on the side facing the through hole for allowing light to pass through.

6. The smart ring as described in claim 4, characterized in that, The outer ring, the inner ring, and the circuit board are concentrically arranged circular rings. The light-emitting unit includes a green LED and a red LED. The central angle formed by the green LED and the photodiode is 25° to 45°, and the central angle formed by the red LED and the photodiode is 35° to 65°.

7. The smart ring as described in claim 4, characterized in that, The number of photodiodes is two, and the two photodiodes are arranged circumferentially along the inner ring, with the light-emitting module located between the two photodiodes; Alternatively, the number of photodiodes is one, the light-emitting module is located on one side of the circuit board, and when the finger passes through the through hole, the line connecting the fingertip and the back of the finger is the axis of symmetry, and the photodiode and the light-emitting module are symmetrically arranged based on the axis of symmetry; Alternatively, the number of photodiodes is one, and the photodiode is located between any two adjacent light-emitting units in the light-emitting module.

8. The smart ring as described in claim 2, characterized in that, The cross-sectional dimensions of the boss gradually decrease from the outside to the inside, and the protrusion height of the boss is greater than or equal to 1 mm.

9. The smart ring as described in any one of claims 1 to 8, characterized in that, The outer ring protrudes outward from the position corresponding to the VPU acquisition module, forming a accommodating cavity on the inward side of the protrusion. The VPU acquisition module is encapsulated in the accommodating cavity and abuts against the outer ring.

10. The smart ring as described in any one of claims 1 to 5, characterized in that, The outer ring has a rigid contact protruding outward from the outer ring, so that the side of the rigid contact facing inward forms a mounting cavity for accommodating the VPU acquisition module. A rigid bracket is provided inside the outer ring, and an elastic element is installed on the rigid bracket. The contact shell is used to push the VPU acquisition module and compress the elastic element when pressure is applied.

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