Blood flow authentication ring

Abstract

The present invention provides a blood flow authentication ring which can focus the focus of a captured image regardless of the size of a finger, and can prevent the contrast from being reduced by external light, or is easy to log in by a user. A blood flow authentication ring according to one aspect of the present invention is characterized by having an annular cover member attached to a finger and performing authentication by means of the blood flow of the finger, the cover member being provided with at least: an irradiation device for irradiating light to the finger; and an imaging device that captures an image of light that has passed through the finger. An adjusting part is arranged between the inner periphery of the cover part and the finger; the adjustment member has the function of at least one of a size correction member and a low reflection member. The adjustment member is disposed at least between the inner peripheral side of the cover member and the back side of the finger.

Description

Technical Field

[0001] The present invention relates to a blood flow authentication ring which has a built-in blood flow imaging function in a ring-shaped ring component and performs blood flow photography and personal authentication when mounted on a finger. Background Art

[0002] In recent years, systems for personal authentication using biometric information have become widespread. As a method for personal authentication using biometric information, a method using a blood flow reading ring for reading blood flow has been proposed in the industry.

[0003] [Background Technology Literature]

[0004] [Patent Document]

[0005] Patent Document 1: Japanese Patent Application Publication No. 2003-093368

[0006] Patent Document 2: Japanese Patent No. 4432539 Summary of the invention

[0007] [Problems to be solved by the invention]

[0008] In the blood flow reading rings of Patent Documents 1 and 2, the distance from the imaging surface to the subject (the surface of the finger on which the blood flow is projected) varies due to the difference in the size of the finger, and there is a disadvantage of obtaining an image with an unfocused intersection. In addition, in Patent Documents 1 and 2, a method of irradiating infrared light or the like and photographing its reflected light is adopted, but in this method, there is a disadvantage that the infrared irradiation light is reflected toward the inner circumference of the ring, or the stray light caused by external light is reflected toward the inner circumference of the ring, the image background becomes brighter, and the contrast of the blood flow is reduced. In addition, the owner of the blood flow reading ring must log in in advance before performing blood flow authentication. In order to perform the personal login, for example, it is necessary to press a button mounted on the blood flow reading ring and perform a series of login operations, but there are problems such as complicated login operations or restrictions on the size of the ring due to the configuration of the login button.

[0009] An object of the present invention is to provide a blood flow authentication ring which can focus a photographic image regardless of the size of the finger, prevent the contrast from being reduced due to external light, or facilitate personal login.

[0010] [Technical means to solve the problem]

[0011] The blood flow authentication ring of the first aspect of the present invention is characterized in that it has a ring-shaped cover part installed on the finger, performs authentication through the blood flow of the finger, and the cover part is provided with at least: an irradiation device for irradiating light to the finger; and a camera device for photographing light passing through the finger; an adjustment part is provided between the inner periphery of the cover part and the finger; the adjustment part has the function of at least either a size correction part or a low reflection part; the adjustment part is configured at least between the inner periphery of the cover part and the back side of the finger.

[0012] A blood flow authentication ring according to a second aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein a coefficient of dynamic friction of a surface of the adjustment member is less than 0.2.

[0013] A blood flow authentication ring according to a third aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein a solar panel is provided on the cover member.

[0014] A blood flow authentication ring according to a fourth aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein the light irradiated by the irradiation device is at least one of near-infrared light and red light.

[0015] A blood flow authentication ring according to a fifth aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein the adjustment member functions as a low reflection member; and the reflectivity of the low reflection member is less than 10%.

[0016] A blood flow authentication ring according to a sixth aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein the adjustment member is arranged at least between the inner peripheral side of the cover member and the back side of the finger and both side surfaces of the finger.

[0017] A blood flow authentication ring according to a seventh aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein the adjustment member is an elastic member.

[0018] A blood flow authentication ring according to an eighth aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein the adjustment member is provided with a light passing portion that allows the light irradiated from the irradiation device to pass therethrough.

[0019] A blood flow authentication ring according to a ninth aspect of the present invention is the blood flow authentication ring according to the first aspect, wherein at least one of the irradiation device and the imaging device is provided in plurality.

[0020] The blood flow authentication ring of the tenth aspect of the present invention is characterized in that it has a ring-shaped cover part installed on the finger, performs authentication through the blood flow of the finger, and the cover part is provided with at least: an irradiation device for irradiating light to the finger; and a camera device for photographing light passing through the finger; the cover part is further provided with a finger detection mechanism for detecting installation on the finger; the finger detection mechanism has a login function of automatically performing personal authentication login corresponding to the finger when the installation on the finger is detected for the first time.

[0021] [Effects of the Invention]

[0022] According to the blood flow authentication ring of the first aspect of the present invention, an adjustment member is provided between the inner periphery of the cover member and the finger, and the adjustment member has at least one of the functions of a size correction member and a low reflection member. The adjustment member is provided at least between the inner periphery of the cover member and the back side of the finger, so that the size correction member acts as a spacer between the cover member and the finger, and the focus of the photographic image can be focused regardless of the size of the finger, and the contrast can be prevented from being reduced due to external light, or the person can be authenticated reliably, so that the person's login also becomes simple. In addition, through the function of the low reflection member, the problem that stray light caused by external light is reflected to the inner periphery of the ring, the image background becomes brighter, and the contrast of the blood flow is reduced can be reliably eliminated.

[0023] According to the second aspect of the blood flow authentication ring of the present invention, the coefficient of dynamic friction of the surface of the adjustment component is less than 0.2, and the surface treatment reduces the sticking of fingers when inserting, and can achieve smooth disassembly and removal. Furthermore, by improving the sliding property of the surface component surface, the durability under repeated disassembly and removal is improved.

[0024] According to the blood flow authentication ring of the third aspect of the present invention, by providing a solar panel on the cover part, the power generated by the solar panel can be used to charge a capacitor, a battery, etc., so that a blood flow authentication ring that does not require a power source can be provided. In addition, when the battery is charged by supplying power from the outside, the solar panel can also be removed.

[0025] According to the blood flow authentication ring of the fourth aspect of the present invention, at least one of near infrared light and red light is used. The red wavelength has the characteristic that the blood flow is easily absorbed by the red light as well as the near infrared wavelength. Therefore, in the photographic image, only the part with blood flow cannot detect the near infrared light or the red light, so that the blood flow can be photographed with high accuracy. In addition, since the near infrared light and the red light can be irradiated by LED, as the irradiation device, a near infrared LED or a red LED can be used.

[0026] According to the blood flow authentication ring of the fifth aspect of the present invention, the adjustment component has the function of a low-reflection component, and the reflectivity of the low-reflection component is less than 10%. Regarding the low-reflection component, for example, a sheet-like material that suppresses the reflectivity of 850nm to 950nm to less than 10% can be used as a surface component. In this case, by setting the surface of the adjustment component to a low reflectivity, the reflection of the inner circumference of the ring caused by near-infrared light irradiation or stray light caused by external light is also suppressed, thereby having the effect of obtaining a high-contrast blood flow image. Furthermore, even if the size correction component is not used, the same effect can be obtained by applying the same low-reflection treatment to the inner side of the cover component.

[0027] According to the blood flow authentication ring of the sixth aspect of the present invention, the size correction component of the adjustment component is configured as a spacer in the space between the cover component and the finger, at least between the inner circumference of the cover component and the back side of the finger and the two side surfaces of the finger, so that the focus of the photographic image can be focused regardless of the size of the finger, and the contrast can be prevented from being reduced due to external light. In addition, through the function of the low-reflection component, the problem of stray light caused by external light reflecting to the inner circumference of the ring, brightening the image background, and reducing the contrast of the blood flow can be reliably eliminated.

[0028] According to the blood flow authentication ring of the seventh aspect of the present invention, since the adjustment member is an elastic member and the deflection amount of the elastic member changes according to the thickness of the finger, the difference in the thickness of the finger can be absorbed by the elasticity of the size correction member, while being installed without a gap, and the finger can be pushed from the back side to the ventral side (from the irradiation device to the imaging device, downward direction). Therefore, regardless of the size of the finger, the distance X from the imaging position of the camera module to the surface of the finger is kept constant.

[0029] According to the blood flow authentication ring of the eighth aspect of the present invention, since the light passing portion for passing the light irradiated from the irradiation device is provided in the adjustment component, and the through hole is provided in the portion of the adjustment component, such as the size correction component, corresponding to the LED arrangement position, the irradiation light (irradiation light beam) from the LED passes through the through hole and is appropriately irradiated to the inner peripheral side of the size correction component. That is, by providing the light passing portion for passing the light irradiated from the irradiation device in the adjustment component, the effect of the adjustment component of the first aspect can be exerted, and the irradiation light (irradiation light beam) from the LED can be further reliably prevented from being blocked.

[0030] According to the blood flow authentication ring of the ninth aspect of the present invention, at least one of the irradiation device and the camera device is provided with a plurality of devices. For example, by configuring a plurality of LEDs, the light quantity can be increased and the irradiation range can be expanded. In addition, by providing a plurality of camera modules, a wide range of imaging can be achieved. In addition, a combination of LEDs of a plurality of specifications can also be performed, for example, by combining at least one red LED and a near-infrared LED, a more distinct blood flow image can also be obtained.

[0031] According to the blood flow authentication ring of the tenth aspect of the present invention, a finger detection mechanism for detecting the installation of the finger is further provided in the cover part, and the finger detection mechanism has a login function for automatically performing the user authentication login corresponding to the finger when the installation of the finger is detected for the first time, so that the first installation of the ring to the finger can be detected and the user login can be automatically performed. In addition, a blood flow authentication ring that can be easily operated without performing special operations and without imposing restrictions on the ring size can be obtained. Thus, a blood flow authentication ring with simple user login can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a perspective view of the blood flow authentication ring according to the first embodiment.

[0033] Figure 2 This is an exploded perspective view of the blood flow authentication ring according to the first embodiment.

[0034] Figure 3A This is a longitudinal sectional view of an example in which one near-infrared LED (or red LED) and one camera module of Embodiment 1 are mounted.

[0035] Figure 3B It is a longitudinal cross-sectional view of Modification 1 in which a plurality of near-infrared LEDs (or red LEDs) and a plurality of camera modules of Embodiment 1 are mounted.

[0036] Figure 4 This is another longitudinal sectional view showing the first embodiment of the invention of the present application.

[0037] Figure 5 This is a diagram showing the structure of the dimension correction member of the invention of the present application.

[0038] Figure 6 This is a diagram showing the direction of application of force due to deflection of the dimension correction member of the invention of the present application.

[0039] Fig. 7A The figure shows the relative positions of the finger and the blood flow authentication ring of the present application when a person with thick fingers according to the first embodiment wears the blood flow authentication ring in a longitudinal section.

[0040] Figure 7BThis is a diagram showing in longitudinal section the relative positions of the finger and the blood flow authentication ring of the present application when a person with thin fingers according to the first embodiment wears the blood flow authentication ring.

[0041] Figure 8 This is a diagram for explaining the authentication determination in the first embodiment.

[0042] Fig. 9 It is a perspective view showing unlocking and locking of the door according to the first embodiment.

[0043] Fig.10 This is a flowchart showing the unlocking and locking of the door according to the first embodiment.

[0044] Fig.11 This is a longitudinal sectional view of the vital sign sensor and NFC according to the additional embodiment 2.

[0045] Fig.12 This is an enlarged view of the arrangement relationship between the NFC antenna flexure and the solar panel of the present invention.

[0046] Fig.13 This is a flow chart of the blood flow authentication ring of the present invention application from finger insertion to the decision process. DETAILED DESCRIPTION

[0047] Hereinafter, the blood flow authentication ring of the embodiment of the present invention will be described in detail with reference to the drawings. However, the embodiments shown below are examples of blood flow authentication rings for embodying the technical ideas of the present invention, and the present invention is not limited to these, but can also be applied to other embodiments included in the scope of the claims. In the embodiment of the present invention, as a specific example, a blood flow authentication ring installed on a finger is illustrated, but this is only an example, and the blood flow authentication ring of this embodiment is not limited to being installed on a finger, and can be applied to any part as long as blood flow can be identified.

[0048] [Implementation Method 1]

[0049] Regarding the lighting device according to Embodiment 1 of the present invention, refer to Figures 1 to 10 Provide explanation.

[0050] Figure 1 This is a perspective view showing the present embodiment. This figure shows a person who owns the blood flow authentication ring 2 attaching the blood flow authentication ring to his / her finger. Figure 2 Fig. 3 is an exploded perspective view showing the present embodiment. Fig. 4 is a longitudinal sectional view showing the present embodiment. Figure 4 It is a longitudinal sectional view showing this embodiment.

[0051] The following about Figure 1 to Figure 4The blood flow authentication ring 2 is formed of two outer shells, front and rear, and the two outer shells are composed of a first outer shell 3 and a second outer shell 4. The first outer shell 3 and the second outer shell 4 are fixed to each other by, for example, bonding, laser welding, or screwing. 5 is an LED as a "near infrared light irradiation mechanism", for example, a near infrared LED that irradiates near infrared light of 850nm to 950nm, or a red LED that irradiates red light of 600nm to 700nm.

[0052] Figure 3A This is a longitudinal sectional view of an embodiment in which one LED 5 (near infrared LED or red LED) and one camera module 12 are mounted. The blood flow authentication ring 22 of this embodiment is an embodiment in which one LED 5 (near infrared LED or red LED) is arranged.

[0053] Figure 3B This is a longitudinal cross-sectional view of an embodiment in which a plurality of LEDs 5 (near-infrared LEDs or red LEDs) and a plurality of camera modules 12 are mounted as a variation 1 of the present embodiment. This variation 1 is an embodiment in which the light quantity is increased and the irradiation range is expanded by configuring a plurality of LEDs 5 (near-infrared LEDs or red LEDs). When a red LED is used, its red wavelength has the characteristic of being easily absorbed by the blood flow as does the near-infrared wavelength. The transmitted light generated by the LED 5 of either the near-infrared LED or the red LED can capture a blood flow image.

[0054] As the plurality of LEDs 5, LEDs 5 of the same specification may be used, or those of different specifications may be used. For example, only one LED 5 having a different wavelength may be used, or two or more LEDs 5 having different wavelengths may be used. For example, by changing at least one of the LEDs 5a to 5e to a red LED, or by using a near-infrared LED and a red LED in combination, a clearer blood flow image can be obtained.

[0055] 6, 6a~6e are protective glasses that seal the opening provided in the cover and allow the irradiation light of LED 5 (hereinafter sometimes referred to as "near infrared light") to pass through. 7 represents the irradiation beam of the near infrared light, and represents irradiation within the range covering the width of the finger from the back side of the finger. 8 is an FPC (flexible printed circuit board) on which circuit parts of the blood flow authentication ring 2 are installed. 9 represents a microcomputer that performs various calculations based on the acquired image. 10 is a flexible solar panel that provides a blood flow authentication ring that does not require a battery by storing electricity in a capacitor not shown in the figure while supplying electricity to the circuit. Of course, it is also possible to remove the solar panel by supplying electricity from the outside and charging. 11 is a communication module, such as a BLE (Bluetooth Low Energy) module, which has the function of pairing with an external device with low power consumption to communicate information.

[0056] 12, 12a to 12c are composed of a substrate and a lens unit equipped with an image sensor in a camera module, and can capture an image from the ventral side of the finger. The camera module 12 is arranged at a position where the irradiation light of the LED 5 can be captured, for example, it can be arranged in the same circumference along the first housing 3 and the second housing 4. Figure 3A This is an implementation method in which one camera module is configured. Figure 3B Generally, multiple LEDs 5 (near infrared LEDs or red LEDs) are configured to increase the light intensity and expand the irradiation range, and multiple camera modules 12 are provided. Figure 3B An example with five LEDs 5 and three camera modules 12 is shown in the figure, but the present variation is not limited to this. As long as the camera module 12 is configured to capture the light emitted by the LED 5, the number of LEDs 5 and the camera module 12 can be set to any number greater than one, respectively, and their configuration is also arbitrary.

[0057] Reference numeral 13 indicates a light beam within the imaging range (angle of view) of the camera module. Reference numeral 14 indicates an optical filter, which may be, for example, a visible light cut filter having a function of not passing 90% or more of light with a wavelength less than 850 nm to 950 nm. If a visible light cut filter is used as an optical filter, the accuracy of blood flow authentication can be improved by not capturing wrinkles or scars on the surface of the finger, which are unnecessary for blood flow authentication. Reference numeral 15 indicates a size correction component, which is a component interposed between the finger and the ring.

[0058] The LED 5, the communication module 11, and the microcomputer 9 are mounted on the FPC 8. The first housing 3 is provided with a circumferential groove, and the FPC 8 is fixed between the first housing 3 and the second housing 4 in a circular arc shape along the groove. The second housing 4 is provided with a circumferential groove similar to the first housing 3. In addition, the second housing 4 is provided with an opening on the inner circumference of the LED 5 at the configuration position of the LED 5 so that the irradiation light of the LED 5 can pass through. The camera module 12 is accommodated in the camera module accommodating portion in the groove of the second housing 4. Since the optical filter 14 is provided on the inner circumference of the camera module accommodating portion, the irradiation light (irradiation light beam 7) from the LED 5 is captured by the camera module 12 as the camera light beam 13 through the optical filter 14.

[0059] The size correction member 15 is a member that is substantially U-shaped along an arc, and is disposed on the inner circumference of the first housing 3 and the second housing 4, and functions as a spacer between the inner circumference of the first housing 3 and the second housing 4 and the outer circumference of the finger. A through hole is provided in the portion of the size correction member 15 that corresponds to the position where the LED 5 is disposed, and the irradiation light (irradiation light beam 7) from the LED 5 is irradiated to the inner circumference of the size correction member 15 through the through hole.

[0060] Figure 5 This is a diagram showing the structure of the size correction component 15 of the invention of the present application. The size correction component 15 is composed of an elastic component 15a and a surface component 15b. The elastic component 15a is an elastic component, and the surface component 15b is a sheet-like material that suppresses the reflectivity of 850nm to 950nm to less than 10%, and is formed integrally with the elastic part. In addition, the surface component 15b is surface-treated to have a surface dynamic friction coefficient of less than 0.2, which reduces the sticking when the finger is inserted and enables smooth disassembly and removal. Furthermore, by improving the sliding property of the surface of the surface component 15b, the durability under repeated disassembly and removal is improved.

[0061] Figure 6 FIG. 1 is a diagram showing the direction of force applied by the deflection of the size correction member 15 of the present invention. The size correction member 15 at least supports the upper direction (back side) and both side sides of the finger, and the elastic force acts on the finger when installed. Figure 6 In the directions indicated by arrows 16a, 16b, and 16c, push your finger toward the center of the ring in the left-right direction and toward the downward direction (camera module side) in the up-down direction.

[0062] Fig. 7A This is a diagram showing in longitudinal section the relative positions of the finger 1 and the blood flow authentication ring 2 when the blood flow authentication ring 2 of the present application is worn by a person having thick fingers of the present application. Figure 7B This is a diagram showing in longitudinal section the relative positions of the finger 1 and the blood flow authentication ring 2 when the blood flow authentication ring 2 of the present application is worn by a person having thin fingers of the present application.

[0063] exist Fig. 7A In the embodiment, since a thicker finger is inserted into the blood flow authentication ring 2, the size correction member 15 is bent from the inner circumference to the outer circumference by a bending amount 17a. Figure 7B In the embodiment, since a thin finger is inserted into the blood flow authentication ring 2, the size correction member 15 is bent from the inner circumference to the outer circumference by a bending amount 17b. At this time, the bending amount 17a is larger than the bending amount 17b according to the thickness of the finger. In this way, since the bending amounts 17a and 17b of the size correction member 15 vary according to the thickness of the finger, Fig. 7A , Figure 7B As shown in FIG. 1 , the size correction member 15 can be installed without gaps while absorbing the difference in thickness of the finger through its elasticity and being pushed downward (toward the camera module). As a result, no matter how big the finger is, it will be removed from the camera module 12's imaging position (focal plane, Fig. 7A and Figure 7B The distance X from the imaging position of the finger 1 to the surface of the finger 1 is kept constant.

[0064] Since the blood vessels of the finger are located inside the finger, the image irradiated by near-infrared light is temporarily projected onto the surface of the finger and the projected image is captured, so the image is captured from the camera position (focal plane, Fig. 7A and Figure 7B The distance X from the imaging position to the surface of the finger is constant, which has the advantage of obtaining a stable in-focus image regardless of the thickness of the finger. In addition, the invention of the present application makes the surface part 15b a sheet-like material that suppresses the reflectivity of 850nm to 950nm to less than 10%, and sets the surface of the size correction part 15 to a low reflectivity, thereby suppressing the reflection of the inner circumference of the ring caused by near-infrared light irradiation or stray light caused by external light, thereby having the effect of obtaining a high-contrast blood flow image. However, in the absence of the size correction part, of course, the same effect can be obtained by performing the same low-reflection treatment on the inner side of the shell.

[0065] Figure 8 This is a diagram for explaining the authentication judgment of the invention of the present application. Before the owner of the blood flow authentication ring 2 performs blood flow authentication, he / she performs self-authentication login in advance (login image: 18). 19a, 19b, 19c, 19d, and 19e are blood flow camera images of fingers of different people. The blood flow authentication ring of the present application compares the previously acquired login image 18 with the blood flow authentication image. 19a to 19d are different from the blood flow of the owner, and only 19e is the same as the login image. Thus, it is determined whether the installer is the owner.

[0066] Fig. 9 20 is a diagnostic receiving device that can receive a BLE signal as a communication signal, 21 is a device that unlocks and locks the door, and 22 is a door handle that opens and closes the door. 23 represents communication, such as BLE communication.

[0067] Fig.10 This is a flowchart showing the unlocking and locking of the door by the blood flow authentication ring of the invention of the present application. When the login image and the camera image described above match and pass the authentication (authentication is possible) (flowchart 24), the blood flow authentication ring 2 of the present application is paired and information is communicated with the receiving machine 20 set at the door (flowchart 25). When the diagnosis of the authentication signal is received by the receiving machine 20 of the door, the door is unlocked by sending an unlocking signal of the door lock to the unlocking and locking machine 21 (flowchart 26). Then, the door leading into the room is automatically locked after a specified time has passed after it is closed.

[0068] The blood flow authentication result performed by the blood flow authentication ring 2 is sent to the receiving machine 20 through the communication module 11 through the communication 23, such as BLE communication. Thus, when the blood flow authentication result is authenticatable, the door lock 21 can be unlocked or locked. On the other hand, when the blood flow authentication result is not authenticatable, the door lock 21 cannot be unlocked or locked. Thus, only when the blood flow authentication result from the blood flow authentication ring 2 is authenticatable and appropriate communication is established from the blood flow authentication ring 2, the contactless unlocking or locking operation of the door lock 21 cannot be performed through the communication 23 even when the mechanical keyboard is not used.

[0069] For example, when the blood flow authentication ring 2 is lost or stolen, even if someone else uses the blood flow authentication ring 2 to try to unlock or lock the door lock 21, the blood flow authentication result cannot be authenticated for the other person's finger, so other people cannot use the blood flow authentication ring 2 to perform non-contact unlocking or locking operations on the door lock 21.

[0070] [Implementation Method 2]

[0071] Regarding the blood flow authentication loop of the second embodiment of the present invention, refer to Fig.11 and Fig.12 About Figures 1 to 10 The same symbols are used for the same structures and their description is omitted. Fig.11 This is a longitudinal sectional view of the vital sign sensor and NFC according to the additional embodiment 2.

[0072] The blood flow authentication ring 2 of this embodiment is equipped with: a small reflection sensor (hereinafter referred to as a vital sign sensor) 29, which mounts a red LED and an infrared LED, and a high-sensitivity photodiode that receives the reflected light thereof in one package; a short-range wireless communication device (hereinafter referred to as NFC) 27; and an antenna flexure (antenna-mounted elastic circuit substrate) 28. Through this vital sign sensor 29, the blood oxygen saturation (hereinafter referred to as SpO2 value) in the blood can be measured based on the ratio (R / IR) of the variable components of the transmitted light amount of red light (R) and infrared light (IR). In addition, by observing the pulsation (variable component), only the components of arterial blood can be observed, and by observing the change, the pulse can also be obtained at the same time. Furthermore, the interval between the pulse beats fluctuates subtly, and the degree of fluctuation of the pulse is the "stress level". The greater the fluctuation of the pulse, the lower the stress level. If the fluctuation of the heart rate is small, that is, at a certain interval, the stress level becomes high. Furthermore, it is known through experiments that the acceleration pulse wave obtained by performing the second-order differentiation of the pulse has a correlation with the blood pressure, and the blood pressure can be estimated. In this way, the SpO2 value, pulse, stress level, and blood pressure can be measured by this vital sign sensor.

[0073] In addition, the NFC is an abbreviation of "Near Field Communication", which means short-range wireless communication. It is a technology and settlement method that can communicate only by covering with a contactless IC chip. It is used in smartphones or prepaid cards. Furthermore, in recent years, credit cards or smart rings equipped with NFC have also appeared for settlement, and the simplification of settlement has become increasingly simple. On the other hand, the risk of someone other than the person making the settlement due to the loss of the machine or card is considered a problem. In this design, the NFC function is set to be effective only when the ring has completed the authentication of the person, so there is a great advantage of preventing settlement by people other than the person. In addition, since the contactless IC chip is embedded in a relatively flat surface of the card or smartphone, by covering the embedded flat surface, communication can be carried out with high sensitivity even if it is close. On the other hand, sometimes the smart ring has few flat parts, and the communication sensitivity is biased when covering, which becomes difficult to respond. In this design, the following structure is adopted: by configuring the antenna flexible member 28 for NFC in addition to the NFC 27 of the non-contact IC in a wide part inside the ring surface, the communication sensitivity is improved and it is easy to respond in various covering methods.

[0074] Fig.12 This is an enlarged view of the configuration relationship between the NFC antenna flexible part 28 and the solar panel 10. The solar panel 10 is configured at the outermost part of the inner side of the first housing 4, and the NFC antenna flexible part 28 is configured on the back thereof. As a result, the solar panel 10 is not blocked, and the light receiving efficiency can be maximized. On the other hand, since the solar panel 10 is non-magnetic, even if the NFC antenna flexible part 28 is configured on the back thereof, the communication sensitivity of NFC is not hindered.

[0075] Fig.13: This is a flowchart showing the blood flow authentication ring 2 of this embodiment from finger insertion to judgment processing. The premise is that the blood flow authentication ring 2 prints and writes the identification number for each blood flow authentication ring 2 during the manufacturing process, and finally the judgment system is enabled (validated) corresponding to the identification number of the blood flow authentication ring 2. In order to prevent anyone from passing the judgment based on the identification number of the blood flow authentication ring 2, as described above, the owner of the blood flow authentication ring 2 must log in in advance before performing blood flow authentication. The blood flow authentication ring 2 operates the vital sign sensor at a certain period to detect the installation / non-installation of the ring (flowchart 30). When it is detected that the ring is installed from the non-installation state and it is determined to be the first installation (flowchart 31), the owner automatically logs in (flowchart 32). In this regard, the NFC function becomes effective in the state where the ring is installed (flowchart 34), and the judgment processing can be performed (flowchart 36). When the blood flow authentication ring 2 is temporarily removed from the finger, the authentication state of the ring is reset through the detection of installation / non-installation described above. Then, when the installation state is detected again and it is determined that it is the second or later installation, the authentication process is entered (flowchart 24). The blood flow authentication ring 2 compares the previously acquired login image with the blood flow authentication image, and determines whether the installer is the owner based on whether they are the same as the login image (flowchart 33). When it is determined that it is the owner, the NFC function is set to be valid, and when it cannot be determined, the NFC function is set to be invalid (flowcharts 34 and 35). Then, in the state where the NFC function is valid, the decision processing is performed (flowchart 36).

[0076] In the above, the blood flow authentication ring 2 is described in the embodiments of the present invention, but the embodiments described are examples of the blood flow authentication ring 2 used to concretize the technical ideas of the present invention, and the present invention is not specific to these, and can also be similarly applied to other embodiments such as variations of combinations of various embodiments and various embodiments.

[0077] In the embodiment of the present invention, a blood flow authentication ring mounted on a finger is illustrated as a specific example, but this is only an example, and the blood flow authentication ring of this embodiment is not limited to being mounted on a finger, and can be applied to any part as long as it can identify blood flow. For example, it can also be applied to the arm, leg, face (such as ear), etc.

[0078] The flowchart for personal authentication is merely an example, and various other programs and flowcharts are applied to the embodiment of the present invention.

[0079] The structure and shape of the blood flow authentication ring 2 shown in the embodiment are merely examples, and the structure and shape of the present embodiment are not limited thereto, and the freedom of design such as designability, assemblability, and selection of parts is wide.

[0080] [Industrial Applicability]

[0081] By disposing the size correction member on the inner circumference of the blood flow authentication ring 2, the distance from the camera unit to the finger surface can be set constant even if the size of the finger is different, which has industrial applicability. Furthermore, as a ring having a blood flow authentication function, a judgment function, and a vital sign information acquisition function, since the process from personal login to authentication can be performed simply, it is easy for anyone to use, and it is safe in terms of security, so it has industrial applicability.

[0082] [Explanation of symbols]

[0083] 1 finger

[0084] 2 Blood flow authentication ring

[0085] 31st Shell

[0086] 4.2nd Shell

[0087] 5. 5a~5e LED (near infrared light irradiation mechanism)

[0088] 6. 6a~6e protective glass

[0089] 7LED 5 beams

[0090] 8FPC

[0091] 9 Microcomputer

[0092] 10Solar panels

[0093] 11 Communication Module

[0094] 12. 12a~12c Camera Module

[0095] 13 Camera Beam

[0096] 14 Optical filters

[0097] 15Size Correction Parts

[0098] 15a Elastic component

[0099] 15b Surface parts

[0100] 16a, 16b, 16c elastic force

[0101] 17a, 17b Deflection

[0102] 1 8 Login Image

[0103] 19a~19e Obtaining images

[0104] 20Receiving Machine

[0105] 21Unlock and lock the machine

[0106] 22 Door handle

[0107] 23Communication

[0108] 24 Certification Process

[0109] 25BLE Process

[0110] 26 Unlocking and locking process

[0111] 27NFC

[0112] 28 antenna flexible parts

[0113] 29 Vital Signs Sensors

[0114] 30Installation Process

[0115] 31 Installation times determination process

[0116] 32 Personal Login Process

[0117] 33 Identification and determination process

[0118] 34 NFC effective process

[0119] 35 NFC invalid process

[0120] 36 Adjudication process.

Claims

1. A blood flow authentication ring, characterized in that It has a ring-shaped cover part installed on the finger, and performs authentication through the blood flow of the finger, and The cover component is provided with at least: an irradiation device for irradiating light to the finger; as well as A camera device for capturing light passing through the finger; An adjustment component is provided between the inner periphery of the cover component and the finger; The adjustment component has at least one of the functions of a size correction component and a low reflection component; The adjustment member is disposed at least between the inner peripheral side of the cover member and the back side of the finger.

2. The blood flow authentication ring according to claim 1, wherein the coefficient of dynamic friction of the surface of the adjustment component is less than 0.

2.

3. The blood flow authentication ring according to claim 1, wherein a solar panel is provided on the cover part. 4 . The blood flow authentication ring according to claim 1 , wherein the light irradiated by the irradiation device is at least one of near-infrared light and red light.

5. The blood flow authentication ring according to claim 1, wherein the adjustment component has a function of a low-reflection component; and The reflectivity of the low-reflection member is less than 10%.

6. The blood flow authentication ring according to claim 1, wherein the adjustment member is disposed at least between the inner peripheral side of the cover member and the back side of the finger and both side surfaces of the finger. The blood flow authentication ring according to claim 1 , wherein the adjustment component is an elastic component. 8 . The blood flow authentication ring according to claim 1 , wherein the adjustment member is provided with a light passing portion through which the light irradiated from the irradiation device passes.

9. The blood flow authentication ring according to claim 1, wherein at least one of the irradiation device and the imaging device is provided in plurality.

10. A blood flow authentication ring, characterized in that It has a ring-shaped cover part installed on the finger, and performs authentication through the blood flow of the finger, and The cover component is provided with at least: an irradiation device for irradiating light to the finger; and A camera device for capturing light passing through the finger; The cover member is further provided with a finger detection mechanism for detecting the installation of the finger; The finger detection mechanism has a login function of automatically performing personal authentication login corresponding to the finger when the finger is detected for the first time.

Images