Earphone

Abstract

The invention discloses an earphone. The earphone comprises an ear front part, an ear rear part, an ear hanging part and a detection module, one end of the ear hanging part is connected with the ear front part, and the other end of the ear hanging part is connected with the ear rear part; the rear ear part is provided with a first detection surface and a second detection surface, the first detection surface is used for being close to or attached to the back of the ear in the wearing state, and the second detection surface is used for being close to or attached to the skin corresponding to the middle branch of the posterior artery of the ear in the wearing state; the first detection surface is provided with a first detection window, the second detection surface is provided with a second detection window, the number of the detection modules is two, and the two groups of detection modules are arranged in the ear rear part and are respectively distributed corresponding to the first detection window and the second detection window; one group of detection modules is used for emitting detection light through the first detection window, and the other group of detection modules is used for emitting detection light through the second detection window. By adopting the scheme, the problems of low detection precision and poor wearing comfort are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a headset. Background Art

[0002] Existing earphones are usually equipped with a detection module for detection, such as detecting physiological parameters such as heart rate and blood oxygen. The earphones usually include an in-ear part, and the detection module is arranged in the in-ear part. When the earphones are worn, the in-ear part enters the ear canal, and the detection module is inserted into the ear canal to complete the detection.

[0003] The detection module consists of two parts: a transmitting tube and a receiving tube. After entering the ear canal, the transmitting tube emits light to the blood flowing through the ear canal, which is received by the receiving tube after diffuse reflection by the human blood. It uses PPG photoelectric volume pulse wave technology to judge the human blood volume information based on the received light intensity data, and analyze the human heart rate and other physiological parameters.

[0004] In the prior art, in order to firmly position the ear part, an elastically deformable material needs to be placed in the ear canal. Since the transmitting tube and the receiving tube cannot directly fit the ear canal, the elastically deformable material in the middle will cause light attenuation and reduce the energy value of the reflected light signal, so the detection accuracy is low. At the same time, the elastic material filling the ear canal will have a certain impact on the wearing comfort. Summary of the invention

[0005] The present invention provides an earphone to solve the problems of low detection accuracy and poor wearing comfort.

[0006] According to one aspect of the present invention, there is provided an earphone, the earphone comprising a front ear portion, a rear ear portion, an ear hook portion and a detection module;

[0007] One end of the ear hook is connected to the front of the ear, and the other end of the ear hook is connected to the back of the ear;

[0008] The rear ear portion has a first detection surface and a second detection surface, the first detection surface is used to be close to or fit the outer side of the auricle when worn, and the second detection surface is used to be close to or fit the skin corresponding to the middle branch of the posterior auricular artery when worn;

[0009] The first detection surface has a first detection window, the second detection surface has a second detection window, there are two groups of detection modules, both groups of detection modules are arranged inside the back of the ear and correspond to the first detection window and the second detection window respectively; one group of detection modules is used to emit detection light through the first detection window, and the other group of detection modules is used to emit detection light through the second detection window.

[0010] In an optional embodiment of the present invention, the included angle between the two groups of detection modules is 20°-90°.

[0011] In an optional embodiment of the present invention, the back of the ear has a central plane, which is parallel to the sagittal plane of the user when worn, and the angle between the surface of each group of detection modules and the central plane is 10°-45°.

[0012] In an optional embodiment of the present invention, the two groups of detection modules are symmetrically distributed on both sides of the central plane.

[0013] In an optional embodiment of the present invention, when the wearer is in a wearing state, along the direction from the top of the head to the neck of the user, the distance from the highest point where the ear hook contacts the ear to the detection module is 10-45 mm.

[0014] In an optional embodiment of the present invention, the angle between the first detection surface and the second detection surface is 20°-90°.

[0015] In an optional embodiment of the present invention, the detection module includes a transmitting tube and a receiving tube, a light isolation member is provided between the transmitting tube and the receiving tube, and the light isolation member is made of a light isolation material.

[0016] In an optional embodiment of the present invention, the emitting tube includes at least one of a green light emitting tube, an infrared light emitting tube and a red light emitting tube.

[0017] In an optional embodiment of the present invention, the surface layer of the front ear portion, the surface layer of the rear ear portion and the ear hook portion are made of soft rubber in one piece.

[0018] In an optional embodiment of the present invention, a fixing bracket is further included, wherein the fixing bracket has a first fixing surface and a second fixing surface, and the angle between the first fixing surface and the second fixing surface is 20°-90°;

[0019] One group of the detection modules is disposed on the first fixing surface, and another group of the detection modules is disposed on the second fixing surface.

[0020] The technical solution of the embodiment of the present invention is to set an ear hook to connect the front part of the ear and the back part of the ear, so that the user can hang the earphone on the ear without inserting it into the ear. At the same time, the detection module is set at the back of the ear. Compared with the conventional detection module in-ear detection, the detection module of this solution does not need to be inserted into the ear. On the one hand, it can significantly improve the wearing comfort, and on the other hand, it saves the use of the elastomer for inserting into the ear canal, thereby reducing the risk of light attenuation. By setting two groups of detection modules at the back of the ear, one group of detection modules emits detection light through the first detection window to illuminate the outside of the auricle; the other group of detection modules emits detection light through the second detection window to illuminate the skin surface behind the ear and the internal blood vessels. By detecting the optical properties of the reflected light of the light, the detection of physiological parameters such as heart rate and / or blood oxygen can be completed. Two groups of detection modules are used for double detection to reduce the deviation caused by the difference in human ears and improve the test accuracy. Therefore, this solution solves the problems of low detection accuracy and poor wearing comfort.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a schematic diagram of a structure of an earphone hung on an ear according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle earphone from another perspective;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure of the middle earphone from another perspective;

[0026] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure at point A in the middle;

[0027] Figure 5 yes Figure 1 A top view of the middle earphone hanging on the ear;

[0028] Figure 6 The invention is a circuit block diagram of an earphone provided according to an embodiment of the invention.

[0029] Among them: 1. front of the ear; 2. behind the ear; 21. first detection surface; 211. first detection window; 22. second detection surface; 221. second detection window; 3. ear hook; 4. detection module; 41. transmitting tube; 411. green light transmitting tube; 412. infrared light transmitting tube; 413. red light transmitting tube; 42. receiving tube; 5. fixing bracket; 51. first fixing surface; 52. second fixing surface; 6. control module; 7. ear. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Figure 1 A schematic diagram of the structure of an earphone provided in Embodiment 1 of the present invention is shown in FIG. Figure 1 As shown, the earphone includes a front ear part 1, a rear ear part 2 and an ear hook part 3; one end of the ear hook part 3 is connected to the front ear part 1, and the other end of the ear hook part 3 is connected to the rear ear part 2; when the earphone is worn, the ear hook part 3 is hung on the user's ear 7, the front ear part 1 is located in front of the ear 7 and close to the ear canal opening, and the rear ear part 2 is located between the back of the ear 7 and the head.

[0033] like Figure 2 As shown, the back of the ear 2 has a first detection surface 21 and a second detection surface 22. The first detection surface 21 is mainly used to approach or fit the back of the ear when worn, especially to act on the area where the back of the ear is away from the head (which can be understood as the area around the helix); the second detection surface 22 is mainly used to approach or fit the connection between the ear and the head when worn, especially the skin surface behind the ear corresponding to the middle branch of the posterior auricular artery.

[0034] like Figure 2 and Figure 3 As shown, the first detection surface 21 has a first detection window 211, and the second detection surface 22 has a second detection window 221. Figure 4 As shown, the headset also includes a detection module 4, and there are two groups of detection modules 4. Both groups of detection modules 4 are arranged inside the rear ear portion 2, and are respectively distributed corresponding to the first detection window 211 and the second detection window 221. One group of detection modules 4 is used to emit detection light through the first detection window 211 to illuminate the area behind the ear away from the head; the other group of detection modules 4 is used to emit detection light through the second detection window 221 to illuminate the rear ear skin surface and internal blood vessels corresponding to the middle branch of the rear auricular artery. The detection module 4 refers to a module that can detect physiological parameters such as heart rate and / or blood oxygen. The detection of physiological parameters such as heart rate and / or blood oxygen can be completed by detecting the optical characteristics of the reflected light of the detection light.

[0035] In the above scheme, by setting the ear hanging part 3 to connect the front part 1 and the back part 2 of the ear, the user can hang the earphone on the ear 7 without inserting it into the ear. At the same time, the detection module 4 is set at the back part 2 of the ear. Compared with the conventional detection module 4 in-ear detection, the detection module 4 of this scheme does not need to be inserted into the ear. On the one hand, it can significantly improve the wearing comfort, and on the other hand, it saves the use of the elastic body for inserting into the ear canal, thereby reducing the risk of light attenuation. By setting two groups of detection modules 4 at the back part 2 of the ear, one group of detection modules 4 emits detection light through the first detection window 211 to illuminate the area behind the ear away from the head; the other group of detection modules 4 emits detection light through the second detection window 221 to illuminate the skin surface behind the ear and the internal blood vessels corresponding to the middle branch of the posterior auricular artery. By detecting the optical properties of the reflected light of the light, the detection of physiological parameters such as heart rate and / or blood oxygen can be completed. Two groups of detection modules 4 are used for double detection to reduce the deviation caused by the difference in human ears and improve the test accuracy. Therefore, this scheme solves the problems of low detection accuracy and poor wearing comfort.

[0036] In an optional embodiment of the present invention, the emitting surfaces of the two groups of detection modules 4 are arranged opposite to each other so as to face the back of the ear when worn, and the two groups of detection modules 4 are arranged tilted relative to each other, forming an angle of 20°-90° between the emitting surfaces of the two groups of detection modules 4, that is, Figure 4 The middle angle α is 20°-90°. Different users have different ear shapes and wearing angles. By setting the included angle of the two sets of detection modules 4 to 20°-90°, the two sets of detection modules 4 have different orientations, ensuring that at least one set of detection modules 4 can be aimed at the skin behind the ear, reducing invalid capture caused by shining on the head or outside.

[0037] On the basis of the above embodiment, the rear ear portion 2 has a central plane, which is parallel to the sagittal plane of the user in the wearing state, and the angle between the surface of each group of detection modules 4 and the central plane is 10°-45°. The sagittal plane refers to a section perpendicular to the ground along the front-back direction of the body, which divides the human body into left and right parts. By setting the angle between the surface of each group of detection modules 4 and the central plane to 10°-45°, it can be ensured that within a variable wearing angle range, at least one group of detection modules 4 can be aligned with the back of the ear.

[0038] Preferably, the two groups of detection modules 4 are symmetrically distributed on both sides of the central plane, so that one group of detection modules 4 acts on the middle branch of the posterior auricular artery, and the other group of detection modules 4 acts on the area behind the ear away from the head; at this point, the detection module 4 can not only irradiate the skin surface and internal blood vessels behind the ear, but also detect the outer side of the auricle and the posterior auricular artery, and complete the detection of heart rate and blood oxygen through the reflected optical characteristics; using two groups of detection modules 4 for dual detection can reduce the deviation caused by differences in human ears and improve the test accuracy.

[0039] In an optional embodiment of the present invention, Figure 1 and Figure 4 As shown, in the wearing state, along the direction from the top of the head to the neck, the distance between the highest point where the ear hook 3 contacts the ear and the detection module 4 is 10-45 mm, that is, Figure 1 The length of L1 is 10-45mm. In some embodiments, the detection module 4 includes a chip, and the distance from the highest point where the ear hook 3 contacts the ear to the detection module 4 along the direction from the top of the head to the neck is the distance from the highest point where the ear hook 3 contacts the ear to the center point of the chip. The blood vessels in the middle of the auricle are shallow, abundant and dense. This data range is designed based on the general size of the human ear. According to such a size setting, the first detection window 211 and the second detection window 221 can be in the same / similar height range as the middle of the auricle, so that the most sufficient blood flow data can be obtained in this part. In the wearing state, along the direction from the top of the user's head to the neck, the distance from the highest point where the ear hook 3 contacts the ear to the detection module 4 is between 10-45mm, so that the detection module 4 can abut the middle of the auricle to obtain more sufficient blood flow data, making the detection result more accurate.

[0040] In an optional embodiment of the present invention, Figure 5 As shown, the angle between the first detection surface 21 and the second detection surface 22 is 20°-90°, that is, Figure 5The middle angle β is 20°-90°. There is usually a certain angle between the back of the ear and the head of the human body, and the angle is usually 20°-90°. By setting the angle between the first detection surface 21 and the second detection surface 22 to 20°-90°, the first detection surface 21 and the second detection surface 22 can be more closely fitted to the outer side of the auricle and the middle branch of the posterior auricular artery when the earphone is worn, so that the detection results of the two sets of detection modules 4 are more accurate.

[0041] In an optional embodiment of the present invention, Figure 6 As shown, the detection module 4 includes a transmitting tube 41 and a receiving tube 42, and a light-isolating member is provided between the transmitting tube 41 and the receiving tube 42, and the light-isolating member is made of a light-isolating material. The light-isolating material refers to a material that can isolate or block the propagation of light. By providing a light-isolating member made of a light-isolating material between the transmitting tube 41 and the receiving tube 42, light leakage and cross-light can be prevented.

[0042] In an optional embodiment of the present invention, the emitting tube 41 includes at least one of a green light emitting tube 411 , an infrared light emitting tube 412 and a red light emitting tube 413 .

[0043] In some embodiments, the transmitting tube 41 includes a green light transmitting tube 411, and the ear clip type earphone also includes a control module 6, the green light transmitting tube 411 is used to transmit green light detection light, the green light transmitting tube 411 refers to a component that can emit green light, and the receiving tube 42 is used to receive the reflected light of the green light detection light to obtain a green light detection signal; the control module 6 is specifically used to: obtain the green light detection signal, and determine the heart rate information based on the green light detection signal. Among them, the heart rate information refers to information that can reflect the heart rate of the human body. When the heart contracts and ejects blood, the volume of blood in the microvessels absorbs a large amount of green light and has a small reflection. When the heart relaxes and blood flows back, the volume of blood in the microvessels is small, the absorption of green light is small, and the reflection is large. Through the reflection and absorption information of green light, data close to the heart rate change can be obtained, so the heart rate information can be determined according to the green light detection signal.

[0044] In some embodiments, the transmitting tube 41 includes an infrared light transmitting tube 412 and a red light transmitting tube 413, the red light transmitting tube 413 is used to transmit red light detection light, the infrared light transmitting tube 412 is used to transmit infrared light detection light, and the receiving tube 42 is used to receive the reflected light of the red light detection light to obtain a red light detection signal, and receive the reflected light of the infrared light detection light to obtain an infrared light detection signal. The control module 6 is specifically used to: obtain the red light detection signal and the infrared light detection signal, and determine the blood oxygen information based on the red light detection signal and the infrared light detection signal. Among them, the blood oxygen information refers to the information that can reflect the blood oxygen of the human body. Since aerobic and anaerobic red blood cells have different reflection effects under different light, oxygenated hemoglobin will absorb more infrared light. And oxygen-free hemoglobin will absorb more red light. Using this feature, the different absorption ratios of red light and infrared light in the blood can be calculated by an algorithm to obtain blood oxygen saturation, that is, the blood oxygen information can be determined based on the red light detection signal and the infrared light detection signal.

[0045] In an optional embodiment of the present invention, Figure 6 As shown, the earphone also includes an optical signal processing circuit 9, which includes an integrator 91, a first analog-to-digital converter 92 and a first filter 93. The input end of the integrator 91 is electrically connected to the receiving tube 42, the output end of the integrator 91 is electrically connected to the input end of the first analog-to-digital converter 92, the output end of the first analog-to-digital converter 92 is electrically connected to the input end of the first filter 93, and the output end of the first filter 93 is electrically connected to the input end of the control module 6. The receiving tube 42 converts the received optical signal into an electrical signal, and then amplifies the signal through the integrator 91, and then the first analog-to-digital converter 92 converts the electrical signal, which is an analog signal, into a digital signal, and then the first filter 93 filters the digital signal and transmits the filtered digital signal to the control module 6, so that the control module 6 can perform data processing.

[0046] In an optional embodiment of the present invention, the headset further includes a driving circuit 10, and the control module 6 is electrically connected to the green light emitting tube 411, the infrared light emitting tube 412, and the red light emitting tube 413 through the driving circuit 10. The driving circuit 10 is a circuit capable of driving the green light emitting tube 411, the infrared light emitting tube 412, and the red light emitting tube 413 to emit light, so that the control module 6 can drive the green light emitting tube 411, the infrared light emitting tube 412, and the red light emitting tube 413 to emit light through the driving circuit 10.

[0047] In an optional embodiment of the present invention, Figure 1As shown, the surface layer of the front ear part 1, the surface layer of the rear ear part 2 and the ear hook part 3 are made of soft rubber in one piece. Among them, the soft rubber has good softness, toughness, wear resistance and sealing, so that the user feels better when wearing it. At the same time, the connection between the front ear part 1, the rear ear part 2 and the ear hook part 3 is tighter, and the front ear part 1, the rear ear part 2 and the ear hook part 3 are not easy to get water, and the earphone has good waterproof performance.

[0048] In an optional embodiment of the present invention, a memory steel wire is provided inside the ear hook portion 3. The memory steel wire can undergo elastic deformation under the action of mechanical force and can be restored to its original shape. Therefore, the user can conveniently operate the earphone to make the front ear portion 1, the rear ear portion 2 and the ear hook portion 3 relatively displaced for easy wearing. After wearing, the earphone can restore its original shape to maintain detection accuracy.

[0049] In an optional embodiment of the present invention, Figure 4 As shown, the earphone further includes a fixing bracket 5, which is arranged inside the rear ear portion 2, and has a first fixing surface 51 and a second fixing surface 52, and the angle between the first fixing surface 51 and the second fixing surface 52 is 20°-90°; one group of detection modules 4 is fixedly arranged on the first fixing surface 51, and the other group of detection modules 4 is fixedly arranged on the second fixing surface 52. By providing the fixing bracket 5, the two groups of detection modules 4 can be conveniently fixed so that the two groups of detection modules 4 are kept at an angle of 20°-90°.

[0050] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0051] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A headset, characterized in that: It includes an ear front part, an ear back part, an ear hook part and a detection module; One end of the ear hook is connected to the front of the ear, and the other end of the ear hook is connected to the back of the ear; The rear ear portion has a first detection surface and a second detection surface, the first detection surface is used to be close to or fit the outer side of the auricle when worn, and the second detection surface is used to be close to or fit the skin corresponding to the middle branch of the posterior auricular artery when worn; The first detection surface has a first detection window, the second detection surface has a second detection window, there are two groups of detection modules, both groups of detection modules are arranged inside the back of the ear and correspond to the first detection window and the second detection window respectively; one group of detection modules is used to emit detection light through the first detection window, and the other group of detection modules is used to emit detection light through the second detection window.

2. The earphone according to claim 1, characterized in that The included angle between the two groups of detection modules is 20°-90°.

3. The earphone according to claim 2, characterized in that The rear part of the ear has a central plane, which is parallel to the sagittal plane of the user when worn, and the angle between the surface of each group of detection modules and the central plane is 10°-45°.

4. The earphone according to claim 3, characterized in that: The two groups of detection modules are symmetrically distributed on both sides of the central plane.

5. The earphone according to any one of claims 1 to 4, characterized in that: When the ear hook is worn, the distance from the highest point where the ear hook contacts the ear to the detection module is 10-45 mm along the direction from the top of the user's head to the neck.

6. The earphone according to any one of claims 1 to 4, characterized in that: The included angle between the first detection surface and the second detection surface is 20°-90°.

7. The earphone according to any one of claims 1 to 4, characterized in that: The detection module comprises a transmitting tube and a receiving tube, a light isolation member is arranged between the transmitting tube and the receiving tube, and the light isolation member is made of a light isolation material.

8. The earphone according to claim 7, characterized in that: The transmitting tube includes at least one of a green light transmitting tube, an infrared light transmitting tube and a red light transmitting tube.

9. The earphone according to any one of claims 1 to 4, characterized in that: The surface layer of the front ear portion, the surface layer of the rear ear portion and the ear hook portion are integrally formed of soft rubber.

10. The earphone according to any one of claims 2 to 4, characterized in that: It also includes a fixing bracket, the fixing bracket having a first fixing surface and a second fixing surface, and the angle between the first fixing surface and the second fixing surface is 20°-90°; One group of the detection modules is disposed on the first fixing surface, and another group of the detection modules is disposed on the second fixing surface.

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