Intelligent ring

Abstract

The utility model provides an intelligent ring. A light emitting module, a first light detection module and a second light detection module are arranged on the surface of an inner ring of the intelligent ring. The light emitting module comprises two light emitting units which are arranged side by side, and each light emitting unit comprises a green light source, a red light source and an infrared light source; a first light detection module and a second light detection module are arranged on the two sides of the light emitting module respectively, each light detection module comprises two light detectors with different light receiving areas, a green light source, a red light source and an infrared light source of each light emitting unit form an isosceles triangle, and the green light source is located on the perpendicular bisector of the red light source and the infrared light source. Therefore, a matrix type sensor layout is adopted, the space occupation of a circuit board is reduced to the maximum extent, and the overall quality of vital sign signals such as the heart rate, the oxyhemoglobin saturation and the blood pressure is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of wearable equipment, more specifically, it relates to a kind of intelligent ring. BACKGROUND

[0002] With the continuous progress of science and technology and the increasing pursuit of healthy lifestyle, the wearable electronic product market is rapidly expanding. Smart watches, bracelets and smart rings and other wearable electronic products not only become fashion accessories, but also become an important tool for health management. Among many smart ring products, using PPG (photop lethysmograph, i.e. photoplethysmography) sensor to monitor heart rate, blood oxygen saturation and blood pressure and other vital signs has become a trend.

[0003] In order to improve the accuracy and reliability of vital signs signal, the designer of intelligent ring usually integrates multiple light sources and light detectors in the device. These elements are cleverly arranged on both sides of the ring, so that the light emitted by the light source can penetrate the user's finger and be captured by the light detector on the opposite side. This method allows the device to collect data from different angles, thus improving the overall quality of the signal.

[0004] However, this design also brings some challenges. First, the use of multiple light sources and receivers increases the complexity of the circuit board, resulting in a larger space occupied. This not only affects the appearance and comfort of the device, but also may limit the battery capacity, thus affecting the battery life. Second, the transmission type detection light path requires the light source to have high brightness to ensure that the light can effectively penetrate the finger and be captured by the receiver. This will undoubtedly increase the power consumption of the device, further shortening the battery life. SUMMARY

[0005] To achieve the above purpose, the purpose of the embodiment of the present application is to provide an intelligent ring, which aims to solve the problems of large space occupied by PPG sensor module and high power consumption.

[0006] The embodiment of the present application provides an intelligent ring, which comprises a ring-shaped shell and a hole formed by the ring-shaped shell, and a physiological signal detection area is arranged on the inner ring surface of the ring-shaped shell, and the detection area is spaced apart from a matrix arranged light emitting module, a first light detection module and a second light detection module,

[0007] The light emitting module comprises a first light emitting unit and a second light emitting unit arranged side by side, each light emitting unit comprises a green light source, a red light source and an infrared light source, and each two light sources of the same color are symmetrical about the midpoint of the line connecting the first light emitting unit and the second light emitting unit;

[0008] The first light detection module and the second light detection module are respectively located on two sides of the light emission module, the first light detection module includes the first light detector and the second light detector arranged side by side, the second light detection module includes the third light detector and the fourth light detector arranged side by side, the photosensitive area of the first light detector is larger than that of the second light detector, and the photosensitive area of the third light detector is larger than that of the fourth light detector;

[0009] A line formed between the photosensitive center of the first light detector and the photosensitive center of the second light detector is parallel to a line formed between the light-emitting center of the first light emission unit and the light-emitting center of the second light emission unit;

[0010] The green light source, the red light source and the infrared light source in each group of light emission units form three vertices of an isosceles triangle, and the green light source in each group of light emission units is located on the perpendicular bisector of the line connecting the red light source and the infrared light source;

[0011] The second light detector is located on the perpendicular bisector of the line connecting the red light source and the infrared light source of the first light emission unit, and the fourth light detector is located on the perpendicular bisector of the line connecting the red light source and the infrared light source of the second light emission unit.

[0012] Further, a fifth light detector is arranged at the midpoint of the line connecting the light-emitting center of the first light emission unit and the light-emitting center of the second light emission unit.

[0013] Further, each light emission unit and each light detector are respectively located in a window opened on an inner ring surface, and the window is provided with a lens.

[0014] Further, the green light source, the red light source and the infrared light source in each light emission unit are configured as a three-in-one LED.

[0015] Further, an indicator is arranged on the outer ring surface of the annular shell, and the detection area is located on the opposite side of the indicator.

[0016] Further, the indicator includes at least one LED indicator.

[0017] Further, the indicator is a display screen.

[0018] In the present application, a plurality of light sources and light detectors are arranged in the detection area on the inner ring surface of the smart ring, which maximizes the space occupation of the circuit board, and adopts a matrix layout, so that the first light detection module and the second light detection module can respectively receive the light emitted by the light emission module, and collect vital sign data from different angles. This multi-angle data collection method significantly improves the overall quality of vital sign signals such as heart rate, blood oxygen saturation and blood pressure. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 is a perspective view of a view angle of the smart ring provided by an embodiment of the present application;

[0021] Figure 2 is a schematic view of a physiological signal detection area of the smart ring provided by an embodiment of the present application;

[0022] Figure 3 is a schematic view of a physiological signal detection area of the smart ring provided by another embodiment of the present application;

[0023] Figure 4 is a block diagram of the smart ring provided by an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0028] Figures 1-2 An embodiment of a smart ring is provided. The smart ring 100 can be worn on a user's finger to achieve monitoring of vital signs signals.

[0029] As shown in Figure 1 , the smart ring 100 includes a ring-shaped shell 102 and a hole 104 formed by the ring-shaped shell 102, which serves as a wearing hole for the user's finger. The ring-shaped shell 102 includes an outer ring 106, an inner ring 108 on the side of the hole 104, and two side walls 110 between the outer ring 106 and the inner ring 108, forming a containing space for containing functional modules that realize the functions of the smart ring 100, such as circuit boards, sensors, batteries, and the like.

[0030] As shown in Figure 2 , the inner ring surface of the ring-shaped shell is provided with a physiological signal detection area 112, and the detection areas are spaced apart to form a matrix arrangement of light emitting modules 114, first light detection modules 116, and second light detection modules 118. The light emitting module 114 includes a first light emitting unit 122 and a second light emitting unit 124 arranged side by side, the first light emitting unit 122 includes a first green light source 132, a first red light source 134, and a first infrared light source 136, the second light emitting unit 124 includes a second green light source 142, a second red light source 144, and a second infrared light source 146, and each two light sources of the same color are symmetric about the midpoint of the line connecting the first light emitting unit 122 and the second light emitting unit 124.

[0031] The first light detection module 116 and the second light detection module 118 are respectively located on both sides of the light emitting module 114, the first light detection module 116 includes a first light detector 152 and a second light detector 154 arranged side by side, the second light detection module 118 includes a third light detector 162 and a fourth light detector 164 arranged side by side, the photosensitive area of the first light detector 152 is larger than that of the second light detector 154, and the photosensitive area of the third light detector 162 is larger than that of the fourth light detector 164. Among them, the light detector can be a photodiode, a photoconductor, or other detectors capable of sensing green light, red light, and infrared light, and the light emitter can be an LED (Light Emitting Diode).

[0032] A line formed between the photosensitivity center of the first light detector 152 and the photosensitivity center of the second light detector 154 is parallel to a line formed between the luminescence center of the first light emitting unit 122 and the luminescence center of the second light emitting unit 124 .

[0033] The green, red, and infrared light sources in each light emitting unit group form the three vertices of an isosceles triangle, with the green light source in each light emitting unit group located on the perpendicular bisector of the line connecting the red and infrared light sources. The second light detector 154 is located on the perpendicular bisector of the line connecting the red and infrared light sources of the first light emitting unit 122, and the fourth light detector 164 is located on the perpendicular bisector of the line connecting the red and infrared light sources of the second light emitting unit 124.

[0034] The photodetector detects light emitted by the green light source and reflected by the user's finger tissue, and uses this light for signal processing to identify the user's heart rate. The photodetector detects light emitted by the red and infrared light sources and reflected by the user's finger tissue, and uses this light for signal processing to identify the user's blood oxygen level. In some embodiments, the photodetector can use this light, detected by at least one of the first green light source 132, the red light source, and the infrared light source, and reflected by the user's finger tissue, to identify other vital sign signals, such as blood pressure and blood sugar, after signal processing. Heart rate detection using green light requires a higher signal strength, while blood oxygen detection using red and infrared light requires a higher perfusion index (the ratio of the AC component to the DC component in the detection signal).

[0035] The second light detector 154 is located closer to the first green light source 132 of the first light emitting unit 122 and is used to detect light emitted by the first green light source 132 and reflected by the user's finger tissue. After signal processing, it is used to identify the user's heart rate. The fourth light detector 164 is located closer to the second green light source 142 of the second light emitting unit and is used to detect light emitted by the second green light source 142 and reflected by the user's finger tissue. After signal processing, it is used to identify the user's heart rate. The higher-quality signals from the second and fourth light detectors 154 and 164 are selected for identifying the user's heart rate, thereby improving the accuracy of heart rate identification.

[0036] Because blood oxygen measurement using red and infrared light requires a higher perfusion index (the ratio of the AC component to the DC component in the detection signal), the distance between the red and infrared light sources and the photodetectors is typically greater. In the embodiment of the present application, a first photodetector 152 captures light emitted by the first red light source 134 and the first infrared light source 136 and reflected by the user's finger tissue, and processes the light for use in identifying the user's blood oxygen level. A third photodetector 162 captures light emitted by the second red light source 144 and the second infrared light source 146 and reflected by the user's finger tissue, and processes the light for use in identifying the user's blood oxygen level. The higher-quality blood oxygen signals from the first and third photodetectors 152 and 162 can be selected for identifying the user's blood oxygen level, thereby improving identification accuracy.

[0037] In the embodiment of this application, two sets of detectors are used to separately receive light emitted by the light emitting module 114, enabling the collection of vital sign data from different angles. This multi-angle data collection method significantly improves the overall quality of vital sign signals such as heart rate, blood oxygen saturation, and blood pressure. Furthermore, the multiple light sources and light detectors are arranged in a matrix format, concentrated in the detection area on the inner surface of the smart ring, minimizing the space occupied by the circuit board and facilitating the miniaturization of the smart ring.

[0038] like Figure 3 As shown, in some embodiments, a fifth light detector 166 is disposed at the midpoint of the line connecting the light emission center of the first light emitting unit 122 and the light emission center of the second light emitting unit 124. Fifth light detector 166 is used to detect light emitted by the first green light source 132 and the second green light source 142 for detecting the user's heart rate. This fifth light detector 166 is used to provide a calibration signal during exercise heart rate measurement, thereby better removing motion noise during exercise heart rate measurement and improving heart rate measurement accuracy. In some embodiments, the green, red, and infrared light sources are configured as a three-in-one LED, which reduces space requirements compared to using three separate LED packages.

[0039] In an embodiment of the present application, each light emitting unit and each light detector are respectively located in a window opened on the inner ring surface. The window can be provided with a lens to focus light so that the light emitted by the light emitting unit can be better transmitted to the light detector, thereby helping to improve the signal strength.

[0040] like Figure 1As shown, the outer ring surface of the annular housing is configured with an indicator 606, which can be a display screen or an LED indicator light, for displaying relevant information of the smart ring, such as charging status, heart rate, blood oxygen, and time, etc., and the detection area is located on the opposite side of the indicator. When worn by the user, the indicator is located on the back of the finger, and the detection area is located on the palm of the finger. This design makes the sensor better fit the finger, avoids the interference of ambient light on the detection signal, and reduces the discomfort of wearing.

[0041] Figure 4 is a block diagram of the smart ring provided by an embodiment of the present application. The smart ring 600 can include one or more processors 602, memories 604, indicators 606, wireless communication modules 608, sensor modules 610, motors 612, keys 614, power management modules 616, and batteries 618. These components can communicate through one or more communication buses or signal lines.

[0042] The processor 602 is the core of the smart ring 600, responsible for running the operating system and applications, performing various functions and data processing. It can contain one or more interfaces for connecting peripheral devices and transmitting data and instructions.

[0043] The memory 604 stores executable program codes, including operating systems, applications (such as vital sign signal detection, image playback, etc.), and data generated during use (motion parameters, physiological parameters, wearing state, etc.). The memory can be a high-speed random access memory or a non-volatile memory, such as a magnetic disk, a flash memory, etc.

[0044] The indicator 606 displays the status of the smart ring, such as charging status, power change, messages, missed calls, and notifications, etc. It can be an LED light or a display screen, which transmits information through light and color changes.

[0045] The wireless communication module 608 supports wireless communication between the smart ring and the network and other devices (such as mobile phones). It includes antennas, RF transceivers, amplifiers, tuners, oscillators, digital signal processors, and codec chips, etc. components, which can realize cellular mobile communication, short-range wireless communication, wireless Internet, and location information services.

[0046] The sensor module 610 is used to measure physical quantities or detect the operating state of the smart ring 600. The sensor module 610 can include an acceleration sensor 610a, a gyroscope sensor 610b, a magnetic sensor 610c, a biological signal sensor 610d, etc. The sensor module 610 can also include a control circuit for controlling one or more sensors included in the sensor module 610.

[0047] The acceleration sensor 610a can detect the magnitude of acceleration of the smart ring 600 in various directions. The magnitude and direction of gravity can be detected when the smart ring 600 is stationary. The acceleration sensor 610a can also be used to identify the smart ring 600 posture, and can be applied to pedometers and other applications. The acceleration sensor 610a can also be used for user gesture recognition, such as recognizing whether the user is waving or other actions, to control other devices paired with the smart ring 600. In some embodiments, the acceleration sensor 610a can be combined with the gyroscope sensor 610b to monitor the user's stride, step frequency, and pace during exercise.

[0048] The gyroscope sensor 610b can be used to determine the motion posture of the smart ring 600. In some embodiments, the angular velocity of the smart ring 600 around three axes (i.e., x, y, and z axes) can be determined by the gyroscope sensor 610b. The acceleration sensor 610a and the gyroscope sensor 610b can be used alone or in combination to identify the user's motion, such as identifying whether the user is in a stationary state, a light exercise state, a moderate intensity exercise state, or a high intensity exercise state.

[0049] The magnetic sensor 610c includes a Hall sensor, or a magnetometer, etc., and can be used to determine the user's position.

[0050] The biological signal sensor 610d is used to measure the user's biological signals, including but not limited to PPG sensors, electrocardiogram sensors, fingerprint scanning sensors, temperature sensors. For example, the smart ring 600 can obtain the user's PPG signal through the PPG sensor to calculate the user's heart rate or blood oxygen saturation and other information. For example, the smart ring 600 can obtain the electrical activity changes generated by the user's heart through the electrocardiogram sensor.

[0051] The motor 612 converts electrical signals into mechanical vibrations for incoming call, message prompt, and touch feedback. The key 614 includes a power-on key, which can be a physical button or a touch key. The battery 618 provides power for various components, and the power management module 616 is responsible for charging and discharging management and battery state monitoring (capacity, cycle times, health status, etc.), and supports wired or wireless charging.

[0052] It should be understood that in some embodiments, the smart ring 600 can be composed of one or more of the aforementioned components, the smart ring 600 can include more or fewer components than illustrated, or combine certain components, or split certain components, or different component arrangements. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0053] In conclusion, the intelligent ring provided by the embodiment of the utility model includes annular shell and hole formed by annular shell, first light emission window, second light emission window and light receiving window are arranged at interval on inner ring surface of annular shell, first light emission window is located between second light emission window and light receiving window, light detector corresponding with light receiving window, first green light emitter corresponding with first light emission window and red light emitter and infrared light emitter corresponding with second light emission window are arranged in annular shell, arc angle corresponding with arc between light receiving window and second light emission window is less than 180 degrees, thereby, receiving light from three different wavelength light emitters by single detector, multiple vital sign signal detection such as heart rate, blood oxygen, blood pressure and the like can be realized, complexity of PPG sensing module is reduced, product miniaturization and power consumption reduction are favorable, and arc angle corresponding with arc between light receiving window and second light emission window is less than 180 degrees, light emitted by light emitter arranged at light emission window is directly received by light detector after being reflected by user's finger tissue, without needing to pass through user's finger completely, light emitter does not need high light source brightness, which is favorable for reducing equipment power consumption.

[0054] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement and the like made in the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A smart ring, characterized by ,including a ring-shaped shell and a hole enclosed by the ring-shaped shell, an inner ring surface of the ring-shaped shell is provided with a physiological signal detection area, the detection area is provided with a matrix arranged light emitting module, a first light detection module and a second light detection module, The light emitting module includes a first light emitting unit and a second light emitting unit arranged side by side, each light emitting unit includes a green light source, a red light source and an infrared light source, and each two light sources of the same color are symmetric about the midpoint of the line connecting the first light emitting unit and the second light emitting unit; The first light detection module and the second light detection module are located on both sides of the light emitting module, the first light detection module includes a first light detector and a second light detector arranged side by side, the second light detection module includes a third light detector and a fourth light detector arranged side by side, the photosensitive area of the first light detector is larger than that of the second light detector, and the photosensitive area of the third light detector is larger than that of the fourth light detector; The line formed between the photosensitive centers of the first light detector and the second light detector is parallel to the line formed between the light emitting centers of the first light emitting unit and the second light emitting unit; The green light source, the red light source and the infrared light source in each group of light emitting units form three vertices of an isosceles triangle, and the green light source in each group of light emitting units is located on the perpendicular bisector of the line connecting the red light source and the infrared light source; The second light detector is located on the perpendicular bisector of the line connecting the red light source and the infrared light source of the first light emitting unit, and the fourth light detector is located on the perpendicular bisector of the line connecting the red light source and the infrared light source of the second light emitting unit.

2. The smart ring of claim 1, wherein The midpoint of the line connecting the light emitting centers of the first light emitting unit and the second light emitting unit is provided with a fifth light detector.

3. The smart ring of claim 2, wherein Each light emitting unit and each light detector is located in a window opened on the inner ring surface, and the window is provided with a lens.

4. The smart ring of claim 1, wherein The green light source, the red light source and the infrared light source in each light emitting unit are configured as a three-in-one LED.

5. The smart ring of claim 1, wherein The outer ring surface of the ring-shaped shell is provided with an indicator, and the detection area is located on the opposite side of the indicator.

6. The smart ring of claim 5, wherein The indicator includes at least one LED indicator light.

7. The smart ring of claim 5, wherein The indicator is a display screen.

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