CN211094019U - Human physiological parameter monitoring assembly and wearable device - Google Patents

Abstract

The application provides a human physiological parameter monitoring assembly and wearable equipment, wherein the assembly comprises a mainboard, and a light source module and a light detection module which are arranged on the mainboard, wherein the light source module comprises a first light-emitting assembly and a second light-emitting assembly, the first light-emitting assembly and the second light-emitting assembly are arranged at intervals and used for emitting first light rays; the light detection module comprises a first light detector for receiving reflected light of the first light and a second light detector for receiving reflected light of the second light, and the first light detector and the second light detector are respectively positioned on two sides of the light source module; the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the second light detector, and the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the first light detector. By the method, the accuracy of monitoring the physiological parameters of the human body can be improved, and the miniaturization of products is facilitated.

Description

Human physiological parameter monitoring assembly and wearable device

Technical Field

The application relates to the technical field of biological monitoring, in particular to a human physiological parameter monitoring assembly and wearable equipment.

Background

Human physiological monitoring (such as heart rate monitoring, pulse monitoring) has become the standard matching function of smart bracelets and smart watches, and is used for monitoring or detecting vital signs such as heart rate, blood oxygen and the like of users. The common physiological monitoring method in the prior intelligent bracelet or watch is a photoelectric transmission measurement method. When the device is used, the contact area of the bracelet and the skin can emit light with specific wavelength to irradiate the skin, and the sensor of the bracelet receives and measures the reflected/transmitted light.

The inventor of the present application has found that, in long-term research and development, the existing physiological monitoring structure using the electrical transmission measurement method generally uses one photodiode corresponding to one or more light emitting elements, and the accuracy is not high. Because the sensing area of the photodiode for effectively receiving light is limited, the distance between light sources with different wavelengths and the same photodiode has special requirements, and the luminous intensity needs to be enhanced to improve the accuracy, so that the power consumption is improved.

SUMMERY OF THE UTILITY MODEL

The application provides a human physiological parameter monitoring subassembly and wearing equipment to solve among the prior art one photo detector and correspond one or more light emitting component, the not high problem of photo detector's rate of accuracy.

In order to solve the technical problem, the application adopts a technical scheme that: the human body physiological parameter monitoring assembly comprises a mainboard, and a light source module and a light detection module which are arranged on the mainboard, wherein the light source module comprises a first light-emitting assembly and a second light-emitting assembly, the first light-emitting assembly and the second light-emitting assembly are arranged at intervals and used for emitting first light rays and second light rays; the light detection module comprises a first light detector for receiving reflected light of the first light and a second light detector for receiving reflected light of the second light, and the first light detector and the second light detector are respectively positioned on two sides of the light source module; the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the second light detector, and the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the first light detector.

In order to solve the above technical problem, another technical solution adopted by the present application is: providing wearing equipment, wherein the wearing equipment comprises a first shell, a second shell and the human body physiological parameter monitoring assembly; the first shell and the second shell are oppositely buckled and assembled to form an accommodating space, and the human physiological parameter monitoring assembly is arranged in the accommodating space; the second housing includes two end portions, a long side between the two end portions, and a window exposing the light source module and the light detection module.

The beneficial effect of this application is: the human body physiological parameter monitoring assembly comprises a main board, and a light source module and a light detection module which are arranged on the main board, wherein the light source module comprises a first light emitting assembly and a second light emitting assembly, the first light emitting assembly and the second light emitting assembly are arranged at intervals and used for emitting first light; the light detection module comprises a first light detector for receiving reflected light of the first light and a second light detector for receiving reflected light of the second light, and the first light detector and the second light detector are respectively positioned on two sides of the light source module; the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the second light detector, and the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the first light detector. The light-emitting quantity is increased by using the two groups of light-emitting elements of the first light-emitting assembly and the second light-emitting assembly, and the first light detector and the second light detector are arranged on the two sides of the two groups of light-emitting elements, so that the light receiving area of the two light detectors can be increased, the collection quantity of human physiological signals is increased, the power consumption is reduced, the algorithm analysis of human physiological parameters is facilitated, and the problem that in the prior art, one light detector corresponds to one or more light-emitting elements, and the accuracy of the light detectors is not high is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings that are needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural diagram of an embodiment of a human physiological parameter monitoring assembly according to the present application;

FIG. 2 is a schematic diagram of a portion of the human physiological parameter monitoring assembly shown in FIG. 1;

FIG. 3 is a schematic view of a portion of another embodiment of the human physiological parameter monitoring assembly shown in FIG. 1;

FIG. 4 is a schematic structural view of an embodiment of a wearable device of the present application;

FIG. 5 is a schematic view of the portion of the wearable device shown in FIG. 4;

FIG. 6 is a schematic cross-sectional view of a portion of the wearable device of FIG. 5;

fig. 7 is a schematic structural view of the second housing shown in fig. 5.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, are within the scope of protection of the present application.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of a human physiological parameter monitoring assembly according to the present application, and fig. 2 is a schematic partial structural diagram of the human physiological parameter monitoring assembly shown in fig. 1. The human physiological parameter monitoring assembly 100 disclosed in this embodiment includes a main board 11, and a light source module 12 and a light detection module 13 disposed on the main board 11.

Specifically, the light source module 12 includes a first light emitting assembly 121 and a second light emitting assembly 122 arranged at an interval, where the first light emitting assembly 121 is configured to emit a first light, and the second light emitting assembly 122 is configured to emit a second light. The light detection module 13 includes a first light detector 131 and a second light detector 132, the first light detector 131 is used for receiving the reflected light of the first light, the second light detector 132 is used for receiving the reflected light of the second light, and the first light detector 131 and the second light detector 132 are respectively located at two sides of the light source module 12. The first and second photodetectors 131, 132 are photodiodes.

The light source module 12 and the light detection module 13 are installed on one side of the main board 11 close to the skin, when a user uses the human body physiological parameter monitoring assembly 100, the light source module 12 can emit light with a specific wavelength to irradiate the skin, and the light detection module 13 receives and measures the light which irradiates the skin and is reflected by the skin, so that the human body physiological parameters of the user can be determined.

The blood reflects light to feed back the blood oxygen heart rate condition, the blood absorbs light with specific wavelength, and the light with the wavelength is absorbed greatly every time the heart pumps blood, so that the light with the wavelength reflected by the skin changes. The reflected light may thus be captured by a light detector to determine a human blood parameter, such as a user's pulse in the skin, pressure level, blood oxygen value, heart rate value, etc.

The skin forms a reflected light for the received light, and the light detection module 13 receives the reflected light and performs a related algorithm analysis by a calculation logic unit (not shown) disposed on the main board 11. In the present embodiment, the first photo-detector 131 and the second photo-detector 132 are configured to receive the reflected light of the first light and the second light together, and form a first reflected light and a second reflected light, the first reflected light is obtained after the skin is reflected by the first light, and the second reflected light is obtained after the skin is reflected by the second light.

The distance between the second light emitting element 122 and the second light detector 132 is greater than the distance between the first light emitting element 121 and the second light detector 132, and the distance between the second light emitting element 122 and the second light detector 132 is greater than the distance between the first light emitting element 121 and the first light detector 131.

The distance between the light emitting assembly and the light detector is the distance between the geometric centers of the light emitting assembly and the light detector. When the light-emitting component only has one light-emitting element, the distance between the light-emitting component and the light detector is the distance between the light-emitting center of the light-emitting element and the geometric center of the light detector; when the light emitting assembly includes a plurality of light emitting elements located in a straight line, the distance between the light emitting assembly and the photodetector is the distance between the line connecting the light emitting elements and the geometric center of the photodetector.

In the embodiment, the first light detector 131 is disposed at a side away from the first light emitting element 121 with the second light emitting element 122 therebetween, and the second light detector 132 is disposed at a side away from the second light emitting element 122 with the first light emitting element 121 therebetween.

In one embodiment, the first light emitting element 121 includes at least one green light source, and the first light is green light; the second light emitting assembly 122 includes at least one red light source and at least one infrared light source, and the second light is a combination of red light and infrared light.

In an embodiment, the first light emitting assembly 121 includes a first light emitting element 1211 and a second light emitting element 1212, and both the first light emitting element 1211 and the second light emitting element 1212 are green light sources, that is, the first light emitting element 1211 is a first green light source, the second light emitting element 1212 is a second green light source, the first light is green light emitted by the two green light sources, and accordingly, the first reflected light includes green reflected light. The human blood is red in color, and can effectively absorb the green light emitted from the green light source, so that the fluctuation of the light reflected from the skin can be more apparent in the green spectrum, and thus the first light-emitting element 1211 and the second light-emitting element 1212 are used to emit the light signal for detecting the blood oxygen.

In one embodiment, the second light emitting assembly 122 includes at least 2 red light sources and at least 2 infrared light sources arranged along a straight line, the number of red light sources is equal to the number of infrared light sources, and the red light sources and the infrared light sources are arranged in a staggered manner. In the present embodiment, the second light emitting assembly 122 includes a third light emitting element 1221, a fourth light emitting element 1222, a fifth light emitting element 1223, and a sixth light emitting element 1224, which are arranged along a straight line.

The third light emitting element 1221 and the fifth light emitting element 1223 are both red light sources, that is, the third light emitting element 1221 is a first red light source, and the fifth light emitting element 1223 is a second red light source. The fourth light emitting element 1222 and the sixth light emitting element 1224 are both infrared light sources, i.e., the fourth light emitting element 1222 is a first infrared light source and the sixth light emitting element 1224 is a second infrared light source. Correspondingly, the second light rays are red light rays emitted by the two red light sources and infrared light rays emitted by the two infrared light sources, and the second reflected light rays comprise red light reflected light rays and infrared reflected light rays.

The degree of light absorption and light scattering of blood is related to the oxygen saturation (SpO2), hemoglobin content, and the absorption of red and infrared light by oxygenated and reduced hemoglobin differ greatly depending on their spectral characteristics in the red and infrared regions. The content of oxyhemoglobin and the content of reduced hemoglobin in the blood of the human body are different, and the absorption spectrums are also different, so that the light source module 12 can emit light signals with two wavelengths to obtain the blood oxygen saturation in the blood. Therefore, in the present embodiment, a red light source and an infrared light source can be adopted to detect the blood oxygen saturation of the human body, wherein the first infrared light source and the second infrared light source can also be used to detect whether the human body physiological parameter monitoring assembly 100 is worn by the user.

Each of the first light emitting assembly 121 and the second light emitting assembly 122 includes a base (not shown), and a light emitting diode (not shown) and a light source cover (not shown) disposed on the base, wherein the base is disposed on the motherboard 11, and the light source cover covers the light emitting diode, and the light emitting diode is used for emitting green light or red light, or infrared light.

In this embodiment, the light emitting diodes may be narrow-angle light emitting diodes, which can emit more light into the skin of a person, so that the first light detector 131 and the second light detector 132 receive more reflected light, which is beneficial to reduce the power consumption of the light emitting diodes.

In a specific embodiment, the first light detector 131 and the second light detector 132 are all photo-sensors (not shown), each photo-sensor has a shape of a rectangle with a long side and a short side facing the skin of the user, the long side of the first light detector 131 is facing the second light emitting assembly 122, and the long side of the second light detector 132 is facing the first light emitting assembly 121.

The first photo detector 131 is mainly used for receiving green light reflected from human skin, and is also used for receiving red light reflected from human skin and infrared reflected light. The second light detector 132 is mainly used for receiving the red external reflected light and the infrared reflected light reflected from the skin of the human body, and is also used for receiving the green reflected light reflected from the skin of the human body. The accuracy and precision of the detection of the human physiological parameters can be improved by multiplexing the first light detector 131 and the second light detector 132. Meanwhile, since the first photodetector 131 and the second photodetector 132 are multiplexed, the first light emitting element 121 and the second light emitting element 122 with lower power can be selected appropriately, thereby reducing the cost of the embodiment.

Based on the above-mentioned positional relationship among the first photodetector 131, the second photodetector 132, the first light-emitting element 121, and the second light-emitting element 122, in the case of a photosensor having the same area, the first photodetector 131 and the second photodetector 132 can receive the first reflected light and the second reflected light as much as possible, which is beneficial for reducing the power consumption of the light-emitting diode, and at the same time, the area requirements for the first photodetector 131 and the second photodetector 132 can be reduced, thereby reducing the economic cost of the first photodetector 131 and the second photodetector 132.

When the first light-emitting element 1211, the second light-emitting element 1212, the third light-emitting element 1221, the fourth light-emitting element 1222, the fifth light-emitting element 1223, and the sixth light-emitting element 1224 are mounted on the main board 11, the third light-emitting element 1221 as the first red light source and the fourth light-emitting element 1222 as the first infrared light source are disposed adjacent to each other, and the fifth light-emitting element 1223 as the second red light source and the sixth light-emitting element 1224 as the second infrared light source are disposed adjacent to each other.

The fourth light emitting element 1222 is positioned between the third light emitting element 1221 and the fifth light emitting element 1223, and the fifth light emitting element 1223 is positioned between the fourth light emitting element 1222 and the sixth light emitting element 1224, i.e., the red light source and the infrared light source are alternately disposed on the main board 11. In practice, the second light emitting assembly 122 may include more than 2 red light sources and 2 infrared light sources, the number of red light sources is equal to the number of infrared light sources, and the red light sources and the infrared light sources are arranged in a staggered manner. The red light sources and the infrared light sources are arranged in a staggered mode, so that red light or infrared light can be uniformly emitted to the skin of a human body and can be uniformly received by the first light detector 131 and the second light detector 132, and the signal quality is improved.

The first light emitting element 1211 is disposed adjacent to one sides of the third light emitting element 1221 and the fourth light emitting element 1222, and the second light emitting element 1212 is disposed adjacent to one sides of the fifth light emitting element 1223 and the sixth light emitting element 1224.

In an embodiment, as shown in fig. 2, the first light emitting element 121, the second light emitting element 122, the first light detector 131 and the second light detector 132 respectively have central axes parallel to each other, and a distance between the first light emitting element 121, the second light emitting element 122, the first light detector 131 and the second light detector 132 is a distance between the central axes corresponding to the elements.

In a particular embodiment, the central axis of the first and second light detectors 131, 132 is a line passing through the geometric center; the central axis of the first light emitting assembly 121 is a line passing through the light emitting center of the first light emitting assembly 121 or a line between the light emitting centers of a plurality of green light sources; the central axis of the second light emitting assembly 122 is a connection line between the red light source and the infrared light source.

As shown in fig. 2, the first photodetector 131 has a first central axis L1, the first central axis L1 is a line passing through the geometric center of the first photodetector 131, specifically, the first central axis L1 is a line connecting the midpoint of the short side of the first photodetector 131 with the center of the first photodetector 131, the second photodetector 132 has a second central axis L2, the second central axis L2 is a line passing through the geometric center of the second photodetector 132, specifically, the second central axis L2 is a line connecting the midpoint of the short side of the second photodetector 132 with the center of the second photodetector 132.

The first light emitting assembly 121 has a third central axis L3, the third central axis L3 is a connection line of light emitting centers of the first light emitting element 1211 and the second light emitting element 1212, the second light emitting assembly 122 has a fourth central axis L4, the fourth central axis L4 is a connection line of light emitting centers of the third light emitting element 1221, the fourth light emitting element 1222, the fifth light emitting element 1223 and the sixth light emitting element 1224, the first central axis L1, the second central axis L2, the third central axis L3 and the fourth central axis L4 are all parallel to each other, that is, any two central axes are parallel to each other.

In the embodiment shown in fig. 2, since the first light emitting module 121 has 2 green light sources, the third central axis L3 is a connecting line of the light emitting centers of the two green light sources, when the first light emitting module 121 has only 1 green light source, as shown in fig. 3, the first light emitting module 121 is a line passing through the light emitting center of the light emitting element 1211, and the line is parallel to the central axis of the second light emitting module 122. in the case of the photo sensor having the same area, the first photo detector 131 and the second photo detector 132 can receive the first reflected light and the second reflected light as much as possible, which is beneficial for reducing the power consumption of the light emitting diode, and simultaneously, the area requirements for the first photo detector 131 and the second photo detector 132 can be reduced, which in turn reduces the economic cost of the first photo detector 131 and the second photo detector 132.

In an embodiment, the first central axis L1 of the first photodetector 131 and the third central axis L3 of the first light emitting element 121 have a first distance therebetween, and the first distance is 2.5 mm to 7.0 mm, for example, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, and 7.0 mm.

The second central axis L2 of the second photodetector 132 has a second distance from the third central axis L3 of the first light emitting element 121, and the second distance is 2.5 mm to 7.0 mm, for example, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, and 7.0 mm.

The second central axis L2 of the second photodetector 132 is spaced apart from the fourth central axis L4 of the second light emitting assembly 122 by a third distance of 3.5 mm to 7.5 mm, for example, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, and 7.0 mm.

Since the longer the red light transmission route in blood, the better the blood oxygen signal can be obtained (the perfusion index is high), in this embodiment, the distance between the third light-emitting element 1221, the fourth light-emitting element 1222, the fifth light-emitting element 1223 and the sixth light-emitting element 1224 of the second light-emitting assembly 122 and the second light detector 132 is greater than the distance between the first light-emitting element 1211, the second light-emitting element 1212 and the second light detector 132 of the first light-emitting assembly 121, that is, the third distance is greater than the second distance.

In addition, the first distance is substantially equal to the second distance, and the light emitted from the first light emitting element 1211 and the second light emitting element 1212 of the first light emitting assembly 121 can be received by the first light detector 131 and the second light detector 132 at the same time, that is, the third distance is greater than the first distance.

In the present embodiment, the first distance and the second distance are substantially equal, so that the green light emitted from the first light emitting element 121 can be received by the first photo-detector 131 and the second photo-detector 132 simultaneously, and the green reflected light received by the two photo-detectors has better signal quality. When the heart rate is calculated, the green light signals received by the first light detector 131 or the second light detector 132 can be used alone for calculation, or the heart rate is calculated by referring to the green light signals received by the first light detector 131 or the second light detector 132, so that the influence of ambient light and user movement can be better removed.

For example, when the user fails to wear the wearable device well, only one of the light detectors can receive a green light signal with better quality, and then the green light signal of one of the light detectors is taken to perform heart rate calculation. In other embodiments, the heart rate calculation may also be performed using the red light signal and the infrared light signal received by the first light detector 131 and the second light detector 132.

In order to obtain more blood oxygen information, the human body is generally required to obtain more abundant information of blood vessels, so that red light and infrared light are adopted, longer wavelength can be obtained, and more subcutaneous tissues are penetrated to obtain blood information. Because the third distance is greater than the second distance, the red light and the infrared light emitted by the second light emitting assembly 122 can penetrate deeper subcutaneous tissue to obtain more blood information, so that the second light detector 132 can receive better blood oxygen information.

In the present embodiment, the red light signal and the infrared light signal received by the second light detector 132 are individually used as the blood oxygen signal for blood oxygen calculation, and the red light signal and the infrared light signal received by the first light detector 131 are used as the auxiliary blood oxygen signal for blood oxygen calculation.

In a specific embodiment, the distance between the second light emitting element 122 and the second light detector 132 is 6.7 mm, the distance between the first light emitting element 121 and the second light detector 132 is 5.1 mm, the distance between the first light emitting element 121 and the first light detector 131 is 5.5 mm, meanwhile, a fourth distance between the third central axis L3 and the fourth central axis L4 is provided, and the fourth distance is 1.6 mm, in the third light emitting element 1221, the fourth light emitting element 1222, the fifth light emitting element 1223 and the sixth light emitting element 1224, the distance between the physical centers of two adjacent light emitting elements can be 1.1 mm, so that the devices do not affect each other to meet the packaging requirements, and the space can be minimized.

First light-emitting element 1211 has a fifth central axis L5, second light-emitting element 1212 has a sixth central axis L6, third light-emitting element 1221 has a seventh central axis L07, fifth central axis L5, sixth central axis L6, and seventh central axis L7 are all straight lines parallel to each other and perpendicular to fourth central axis L4, a distance between fifth central axis L5 and seventh central axis L7 is 0.6 mm, and a distance between fifth central axis L5 and sixth central axis L6 is 2.26 mm.

The human physiological parameter monitoring assembly 100 disclosed in this embodiment has two red light sources, two infrared light sources and two photodetectors with relatively large areas densely arranged, so that the light emission amount of the human physiological parameter monitoring assembly 100 is larger, the receiving areas of the two photodetectors for receiving light are larger, more blood oxygen signals are collected, and algorithm analysis is facilitated.

In an embodiment, the light source module 12, the first light detector 131 and the second light detector 132 are respectively mounted on the motherboard 11 through separate pads for adjusting the height difference therebetween, and the top surfaces of the light source module 12, the first light detector 131 and the second light detector 132 are flush.

As shown in fig. 1, the main board 11 is provided with a first pad 141, a second pad 142 and a third pad 143, the first photodetector 131 is mounted on the main board 11 through the first pad 141, the light source module 12 is mounted on the main board 11 through the second pad 142, and the second photodetector 132 is mounted on the main board 11 through the third pad 143.

The first pad block 141, the second pad block 142 and the third pad block 143 are used for adjusting the height difference of the top ends of the first light detector 131, the light source module 12 and the second light detector 132, so that the top surfaces of the first light detector 131, the light source module 12 and the second light detector 132 are in a flush state, thereby increasing the sensing effect of the first light detector 131 and the second light detector 132, and being closer to the skin of a user, which can improve the accuracy of the human physiological parameter monitoring assembly 100.

For example, when the first light emitting element 1211, the second light emitting element 1212, the third light emitting element 1221, the fourth light emitting element 1222, the fifth light emitting element 1223, and the sixth light emitting element 1224 are mounted on the main board 11 through the base, the first top surface is 0.4 mm higher than the second top surface, the thicknesses of the first pad block 141 and the third pad block 143 may be set to 1.2 mm, and the thickness of the second pad block 142 may be set to 0.8 mm.

In the embodiment, the first and second light emitting elements 121 and 122 as light sources and the first and second photodetectors 131 and 132 are compactly arranged, so that a physiological signal with better quality can be obtained in a smaller layout space, which is beneficial to the miniaturization of the human physiological parameter monitoring element.

Please refer to fig. 3, fig. 3 is a partial schematic structural diagram of another embodiment of the human physiological parameter monitoring assembly shown in fig. 1.

In one embodiment, the human physiological parameter monitoring assembly 100 may include a green light source, a red light source, an infrared light source, and two light detectors.

Specifically, the first light emitting assembly 121 includes a first light emitting element 1211, and the first light emitting element 1211 is a green light source, which may include a light emitting diode, such as a narrow-angle light emitting diode. The second light assembly 122 includes a third light emitting element 1221 and a fourth light emitting element 1222, wherein the third light emitting element 1221 is a red light source, the fourth light emitting element 1222 is an infrared light source, and each of the red light source and the infrared light source may include a light emitting diode, such as a narrow angle light emitting diode. The light detection module 13 includes a first light detector 131 and a second light detector 132, and each of the first light detector 131 and the second light detector 132 includes a photosensor.

The first light emitting assembly 121 and the second light emitting assembly 122 are disposed at an interval, the first light detector 131 is disposed at one side far away from the first light emitting assembly 121 at an interval from the second light emitting assembly 122, the second light detector 132 is disposed at one side far away from the second light emitting assembly 122 at an interval from the first light emitting assembly 121, that is, the red light source and the infrared light source are disposed at one side of the green light source, the second light detector 132 is disposed at the other side of the green light source, and the first light detector 131 is disposed at one side far away from the green light source from the red light source and.

The distances between the first light emitting element 1211, the third light emitting element 1221, and the fourth light emitting element 1222 and the first photodetector 131 and the second photodetector 132 are similar to those of the above embodiments, and are not described herein again.

In the embodiment shown in fig. 3, the difference from the embodiment shown in fig. 2 is mainly that the number of the light sources is different, that is, 1 green light source, 1 red light source and 1 infrared light source are respectively shown in fig. 3, and 2 green light sources, 2 red light sources and 2 infrared light sources are respectively shown in fig. 2.

In other embodiments of the present application, 1 green light source, 1 red light source, and 1 infrared light source are used as a group, and a plurality of groups (greater than or equal to 2 groups) of light source structures may be formed to obtain higher intensity physiological signals.

The application provides a human physiological parameter monitoring assembly 100, which comprises a main board 11, and a light source module 12 and a light detection module 13 which are arranged on the main board 11, wherein the light source module 12 comprises a first light emitting assembly 121 and a second light emitting assembly 122 which are arranged at intervals and used for emitting first light rays; the light detection module 13 includes a first light detector 131 for receiving the reflected light of the first light and a second light detector 132 for receiving the reflected light of the second light, the first light detector 131 and the second light detector 132 being respectively located at both sides of the light source module 12; the distance between the second light emitting element 122 and the second light detector 132 is greater than the distance between the first light emitting element 121 and the second light detector 132, and the distance between the second light emitting element 122 and the second light detector 132 is greater than the distance between the first light emitting element 121 and the first light detector 131. The first light detector 131 and the second light detector 132 are arranged on two sides of the two groups of light-emitting elements by using the two groups of light-emitting elements of the first light-emitting assembly 121 and the second light-emitting assembly 122 to respectively emit green light signals for detecting heart rate and red light and infrared light signals for detecting blood oxygen, so that the light receiving areas of the two light detectors can be increased, and the heart rate detection accuracy is improved; the distance between the second light emitting assembly 122 and the second light detector 132 is relatively large, and the red light and infrared light signals emitted by the second light emitting assembly 122 can penetrate through the skin of the user, and are received by the second light detector 132 after acquiring more subcutaneous blood information, so that the collection amount of blood oxygen signals is increased, and the algorithm analysis of human physiological parameters is facilitated. The utility model discloses can be in reinforcing rhythm of the heart and blood oxygen signal's signal strength, reasonable distance interval design also can make physiological detection subassembly miniaturized.

On the basis of the foregoing embodiments, the present application further provides a wearable device, specifically please refer to fig. 4 to 6, fig. 4 is a schematic structural diagram of an embodiment of a wearable device in the present application, fig. 5 is a schematic structural diagram of a part of the wearable device shown in fig. 4, and fig. 6 is a schematic sectional structural diagram of a part of the wearable device shown in fig. 5. The wearable device 200 disclosed in this embodiment includes a first shell 21, a second shell 22, and a human physiological parameter monitoring assembly 23, wherein the first shell 21 and the second shell 22 are assembled to form a main body in an aligned and buckled manner, the human physiological parameter monitoring assembly 23 is similar to the human physiological parameter monitoring assembly 100 in the foregoing embodiment, and the parts similar to the above embodiment in this embodiment are not repeated herein.

The wearable device 200 disclosed in this embodiment is a bracelet, and can be worn on the wrist of a human body directly, and accordingly, the wearable device 200 further includes belt portions 24 connected to both sides of the main body, the belt portions 24 are used for fixing the wearable device 200 on the wrist of the human body, and the belt portions 24 are detachably connected to the main body.

It is obvious that the human physiological parameter detection assembly 23 can be integrated into any portable device, such as glasses, helmets, bracelets, necklaces, watches, brooches, shoes, etc. The main body of the wearable device 200 as a bracelet is detachably connected to the band part 24, and the main body with the human body physiological parameter detection part 23 can be installed on other portable devices to realize physiological detection.

Wearing equipment 200 is used for wearing on user's skin, and first casing 21 and second casing 22 counterpoint lock form an accommodation space after assembling, and human physiological parameter monitoring subassembly 23 sets up in accommodation space, and second casing 22 sets up in the one side that is close to the skin, and has the radian with the crooked of human wrist adaptation.

The second housing 22 includes two end portions (not shown), a long side (not shown) between the two end portions, and a window 221, wherein the window 221 is matched with the shapes and sizes of the light source module 231 and the light detection module 232, and exposes light emitting and receiving surfaces of the light source module 231 and the light detection module 232 for transmitting the first light, the second light, the first reflected light, and the second reflected light.

In this embodiment, a display screen (not shown) for displaying information is mounted on the first casing 21, and the second casing 22 is substantially in the shape of a long strip, and both ends of the second casing are detachably connected to the belt portion 24 of the wearable device 200.

The material of the first housing 21 and the second housing 22 may be plastic, metal, alloy, etc., and is not limited herein. The edges of the first and second housings 21 and 22 may be provided with grooves and protrusions that match each other, or snaps and catches that match each other, respectively, so that the first and second housings 21 and 22 are assembled in alignment.

Referring to fig. 7, fig. 7 is a schematic structural diagram of the second housing shown in fig. 5.

In one embodiment, the number of the viewing windows 221 is three, and the three viewing windows 221 correspond to the light source module 231 and the two photodetectors of the human physiological parameter monitoring assembly 23 one by one.

Specifically, the window 221 includes a first window 2211, a second window 2212 and a third window 2213, the second window 2212 is disposed between the first window 2211 and the third window 2213, the first window 2211, the second window 2212 and the third window 2213 are rectangular with long sides and short sides, the long side of one side of the second window 2212 faces the long side of the first window 2211, and the long side of the other side of the second window 2212 faces the long side of the third window 2213.

The short edges of the first, second and third windows 2211, 2212 and 2213 are disposed along the long edge of the second housing 22, and the first, second and third windows 2211, 2212 and 2213 are disposed in parallel on the second housing 22.

The first window 2211 is disposed corresponding to the first light detector 2321, the second window 2212 is disposed corresponding to the light source module 231, that is, the second window 2212 is disposed corresponding to the first light emitting assembly (not shown) and the second light emitting assembly (not shown), and the third window 2213 is disposed corresponding to the second light detector 2322.

Looking at a side of the second housing 22 toward the inside of the wearable device 200, the first light detector 2321 may be viewed in a first window 2211, the green, red, and infrared light sources may be viewed in a second window 2212, and the second light detector 2322 may be viewed in a third window 2213. The first window 2211 matches with the first light detector 2321 in shape and size, the second window 2212 matches with the light source module 231 formed by the green light source, the red light source and the infrared light source in shape and size, and the third window 2213 matches with the second light detector 2322 in shape and size.

In one embodiment, the second window 2212 has a fifth distance from two adjacent long sides of the first window 2211, the second window 2212 has a sixth distance from two adjacent long sides of the third window 2213, and the fifth distance is less than the sixth distance. The green light source is located at a side of the second window 2212 near the third window 2213, and the red light source and the infrared light source are located at a side of the second window 2212 near the first window 2211.

In one embodiment, the first window 2211, the second window 2212 and the third window 2213 each have a long side of 5.1 mm, the first window 2211 and the third window 2213 each have a short side of 2.8 mm, the second window 2212 each have a short side of 3.3 mm, the fifth distance is 1.65 mm and the sixth distance is 2.85 mm.

In fact, the smaller the fifth distance, the better, the more green light signals can be received by the first photodetector 2321 in the first window 2211, but since it is considered that a light blocking portion for preventing internal light channeling needs to be provided between the first window 2211 and the second window 2212, there is a requirement for providing the light blocking portion during mold injection. The fifth distance is set to 1.65 mm and is set small enough to allow the first light emitting assembly and the first light detector 2321 to be a small enough distance from each other that the first light detector 2321 acquires more green light information.

The short edges of the first window 2211, the second window 2212 and the third window 2213 are arranged along the long edge of the second casing 22, and the first window 2211, the second window 2212 and the third window 2213 are arranged in parallel to the second casing 22 to form a window 221 area arranged along the long edge of the second casing 22. Therefore, the short edges of the first light detector 2321 and the second light detector 2322 of the light source module 231 of the human body physiological parameter monitoring component 23 are sequentially arranged corresponding to the long edges of the bracelet, so that the width of the bracelet is not limited by the number of light sources and the number of light detectors, the width of the bracelet main body is not too wide, and the bracelet main body is similar to a long strip shape, so that the structure is more compact while the physiological signal intensity is improved, and the miniaturization of the product is facilitated.

The material of the window 221 is a highly transparent material, for example, at least one of Polycarbonate (PC), polymethyl methacrylate (PMMA), and epoxy resin. The second housing 22 is made of a light-shielding material, and the window 221 and the second housing 22 are injection-molded by a two-shot molding process.

The double-color injection molding process is based on an IMD (in-mold decoration) process and can be understood as a common name of the IMD. The color mixing and combining method is characterized in that two colors are mixed and combined, are inlaid on an object, and usually take black and white as base colors. The main characteristics are high glossiness, smooth and fine hand feeling, difficult scratching and the like.

The window 221 is a first color, the second housing 22 is a second color (light-shielding region), and the first window 2211, the second window 2212 and the third window 2213 are independent from each other and have independent glue inlets. For example, a sealant position of 0.4 mm may be reserved, and a plug-in sealant is used if the sealant position is insufficient.

The insertion is a mold term, and refers to a mold design mode that the front and rear mold steel materials with draft after mold closing are abutted to form close contact, so that molten plastic can be effectively prevented from flowing in, and the injection molding of a product is completed. The sealing compound refers to a mold structure which limits the flow of molten plastic in a cavity after the mold is closed, and can be understood as a front mold and a rear mold which are accurate enough.

In a specific embodiment, the human physiological parameter monitoring component 23 needs to ensure that the received light is the light reflected by the skin, and other light source signals all belong to interference signals, so an anti-interference structural design needs to be performed inside the wearable device 200 to avoid receiving light sources outside the skin reflection.

If no light blocking portion is disposed between the first window 2211, the second window 2212 and the third window 2213, light emitted from the light source in the second window 2212 directly reaches the second window 221 and the third window 221, and light leakage is caused. Accordingly, the wearable device 200 further includes an elastic light-blocking sheet 24 for further isolating the second window 2212 from the first window 2211 and the third window 2213, thereby preventing light leakage.

The elastic light-shielding plate 24 is disposed between the main board 233 and the second housing 22, and the elastic light-shielding plate 24 is provided with a through hole exposing the light source module 231 and the light detection module 232.

In one embodiment, the elastic light-shielding plate 24 may include ethylene-vinyl acetate copolymer foam, and the elastic light-shielding plate has the characteristics of elasticity and light-tightness, and after the first shell 21 and the second shell 22 are assembled in an aligned manner, the elastic light-shielding plate 24 can be compressed by 0.3-0.5 mm in the accommodating space to block the interference of light rays inside the human physiological parameter monitoring assembly 23 and before the light source module 231 reaches the skin.

In an embodiment, the number of the at least one through hole is three, and the at least one through hole includes a first through hole 2411, a second through hole 2412, and a third through hole 2413, where the first through hole 2411 is disposed corresponding to the first light detector 2321, the second through hole 2412 is disposed corresponding to the light source module 231, and the third through hole 2413 is disposed corresponding to the second light detector 2322.

The application provides a wearable device 200, the wearable device 200 comprises a first shell 21, a second shell 22 and a human body physiological parameter monitoring component 23; the first shell 21 and the second shell 22 are oppositely buckled and assembled to form an accommodating space, and the human physiological parameter monitoring assembly 23 is arranged in the accommodating space; the second housing 22 includes two end portions, a long side between the two end portions, and a window 221 exposing the light source module 231 and the light detection module 232, which can improve the accuracy of the first and second light detectors 2321 and 2322.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims (14)

1. A human physiological parameter monitoring assembly is characterized in that the assembly comprises a main board, a light source module and a light detection module which are arranged on the main board, wherein,

the light source module comprises a first light emitting assembly and a second light emitting assembly, wherein the first light emitting assembly and the second light emitting assembly are arranged at intervals and used for emitting first light rays;

the light detection module comprises a first light detector for receiving reflected light of the first light and a second light detector for receiving reflected light of the second light, and the first light detector and the second light detector are respectively positioned at two sides of the light source module;

the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the second light detector, and the distance between the second light-emitting assembly and the second light detector is greater than the distance between the first light-emitting assembly and the first light detector.

2. The human physiological parameter monitoring assembly according to claim 1, wherein the distance between the second light emitting assembly and the second light detector is 3.5 mm to 7.5 mm; the distance between the first light-emitting assembly and the second light detector is 2.5-7.0 mm; the distance between the first light-emitting assembly and the first light detector is 2.5-7.0 mm.

3. The human physiological parameter monitoring assembly of claim 1, wherein the distance between the second light emitting assembly and the second light detector is 6.7 mm; the distance between the first light-emitting assembly and the second light detector is 5.1 mm; the distance between the first light emitting assembly and the first light detector is 5.5 millimeters.

4. The human physiological parameter monitoring assembly according to claim 3, wherein the second light emitting assembly comprises at least 2 red light sources and at least 2 infrared light sources arranged along a straight line, the number of the red light sources is equal to the number of the infrared light sources, and the red light sources and the infrared light sources are arranged in a staggered manner.

5. The human physiological parameter monitoring assembly of claim 1, wherein the first light emitting assembly comprises at least one green light source, and the first light is green light;

the second light-emitting component comprises at least one red light source and at least one infrared light source, and the second light is a combined light of red light and infrared light.

6. The human physiological parameter monitoring assembly according to claim 5, wherein the first light emitting assembly, the second light emitting assembly, the first light detector and the second light detector respectively have central axes parallel to each other, and a distance between the first light emitting assembly, the second light emitting assembly, the first light detector and the second light detector is a distance between the central axes.

7. The human physiological parameter monitoring assembly of claim 6, wherein the central axis of the first and second light detectors is a line passing through a geometric center;

the central axis of the first light-emitting assembly is a line passing through the light-emitting center of the first light-emitting assembly or a connecting line among the light-emitting centers of the green light sources;

the central axis of the second light-emitting component is a connecting line between the red light source and the infrared light source light-emitting center.

8. The human physiological parameter monitoring assembly of claim 1, wherein the first light detector and the second light detector are each rectangular with a long side and a short side, the long side of one side of the first light detector facing the second light emitting assembly, and the long side of one side of the second light detector facing the first light emitting assembly.

9. The human physiological parameter monitoring assembly according to claim 1, wherein the light source module, the first light detector and the second light detector are respectively mounted on the main board through separate pads for adjusting the height difference therebetween, and the top surfaces of the light source module, the first light detector and the second light detector are flush.

10. A wearable device, which is characterized in that the wearable device comprises a first shell, a second shell and a human body physiological parameter monitoring component as claimed in any one of claims 1-9;

the first shell and the second shell are oppositely buckled and assembled to form an accommodating space, and the human physiological parameter monitoring assembly is arranged in the accommodating space; the second shell comprises two end parts, a long edge positioned between the two end parts and a window exposing the light source module and the light detection module.

11. The wearable device according to claim 10, wherein the viewing windows include a first viewing window matching the first photodetector, a second viewing window matching the light source module, and a third viewing window matching the second photodetector, the first, second, and third viewing windows are rectangular having long sides and short sides, and the short sides of the first, second, and third viewing windows are disposed along the long side of the second housing.

12. The wearable device according to claim 11, wherein a distance between two adjacent long sides of the second window and the first window is smaller than a distance between two adjacent long sides of the second window and the third window.

13. The wearable device according to claim 10, wherein the window is made of a highly transparent material, the second housing is made of a light shielding material, and the window and the second housing are injection molded by a two-color injection molding process.

14. The wearable device according to claim 10, further comprising an elastic light-shielding plate disposed between the main board and the second housing, wherein the elastic light-shielding plate is provided with a through hole exposing the light source module and the light detection module.

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