Sweat detection device and sweat detection method

Abstract

The present invention relates to the field of sweat detection technology, and in particular to a sweat detection module and a preparation method thereof, wherein the sweat detection module comprises at least two electrodes, each of the electrodes comprises at least one contact surface in contact with the sweat to be detected, and the contact surfaces are distributed in a separated point shape. During the detection process, when the sweat to be detected contacts the electrodes, a current loop is formed between the electrodes and the sweat to be detected, so that the electrodes output a sweat detection signal of the sweat to be detected. In the present invention, the electrodes are broken up into contact surfaces distributed in a separated point shape, so that the effective alternating electric field is forcibly compressed in a very thin space. Therefore, when sweat detection is performed, only a small amount of sweat is required to realize the detection, and there is no need to process the sweat. The sweat detection device and the detection method thereof can make the sweat detection accuracy higher while simplifying the measurement steps.

Description

[Technical field]

[0001] The present invention relates to the technical field of sweat detection, and in particular to a sweat detection device and a sweat detection method. [Background technology]

[0002] Sweat is transmitted from the head to the surface of the skin through sweat glands, secreting many biomarkers related to the body, such as ions, proteins, hormones, etc. Therefore, by detecting these secretions in sweat, the health of the human body can be quickly and non-invasively judged. Related technologies have shown that there is a significant relationship between sodium ions in sweat and dehydration, chloride ions and cystic fibrosis, and potassium ions and body metabolism. In the comparison between blood and urine, sweat data is highly correlated with its physiological indicators.

[0003] Since the sweat glands on the human body are not evenly distributed, the amount of sweat secretion is not stable. Using traditional sweat testing, the monitoring of biological information in sweat faces the problem of inconsistent sampling and testing. [Summary of the invention]

[0004] In order to solve the problems of existing sweat detection, the present invention provides a sweat detection device and a sweat detection method.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a sweat detection device, comprising a sweat detection module and a body surface detection module, wherein the sweat detection module comprises at least two electrodes, and the electrode comprises a contact surface in contact with sweat; when sweat contacts the contact surface and forms a current loop between the electrode and the sweat, the electrode outputs a sweat detection signal of the sweat correspondingly, and the sweat detection signal comprises a current signal and / or a voltage drop signal;

[0006] The body surface detection module contacts the skin and generates a skin hydration signal. The sweat detection module contacts the sweat of the subject to be tested and generates a sweat detection signal. Within a preset measurement time, the change amplitude of the skin hydration signal is judged. When the change amplitude of the skin hydration signal is less than the set order of magnitude, the sweat detection signal is output; or when the change amplitude of the skin hydration signal is greater than or equal to the set order of magnitude, the sweat correction data corrected based on the skin hydration signal is output.

[0007] Preferably, each of the electrodes comprises at least one electrode block, the electrode block comprises the contact surface, and the contact surface is distributed in the form of separate points.

[0008] Preferably, the contact surface is distributed in separated points, including any one of discrete central symmetrical distribution, staggered point lattice distribution, display point lattice distribution and non-uniform point lattice distribution.

[0009] Preferably, the area of ​​the contact surface is 0.01 mm 2 -10 mm 2 ; and / or the distance between the edges of the contact surfaces of adjacent electrode blocks is less than 2 mm.

[0010] Preferably, the body surface detection module also includes at least two body surface electrodes, and the sweat detection module and the body surface detection module both include a four-wire measurement method or a two-wire measurement method.

[0011] Preferably, the body surface detection module includes a central electrode and a ring electrode arranged around the central electrode; or the body surface detection module includes two symmetrically arranged electrodes; or the body surface detection module includes a central electrode and three ring electrodes arranged around the central electrode from the inside to the outside; or the electrode includes multiple detection surfaces in contact with the skin, and the detection surfaces are distributed in a dispersed point shape.

[0012] Preferably, the sweat detection device also includes any one or a combination of a temperature detection module, a temperature detection module, an ultraviolet detection module, an ambient temperature and humidity detection module, and a heart rate detection module.

[0013] In order to solve the above technical problems, the present invention provides another technical solution as follows: a sweat detection method, which includes the following steps: providing a body surface detection module and a sweat detection module; wherein the sweat detection module includes at least two electrodes, and the electrode includes a contact surface that contacts with sweat; when sweat contacts the contact surface and forms a current loop between the electrode and the sweat, the electrode outputs a sweat detection signal of the sweat correspondingly, and the sweat detection signal includes a current signal and / or a voltage drop signal; the body surface detection module is brought into contact with the skin and generates a skin hydration signal, and the sweat of the subject to be tested is brought into contact with the sweat detection module, and the sweat detection module generates a corresponding sweat detection signal; within a preset measurement time, the change amplitude of the skin hydration signal is judged; when the change amplitude of the skin hydration signal is less than a set order of magnitude, the sweat detection signal is output; or when the change amplitude of the skin hydration signal is greater than or equal to a set order of magnitude, sweat correction data corrected based on the skin hydration signal is output.

[0014] Compared with the prior art, the sweat detection device and sweat detection method provided by the present invention have the following beneficial effects:

[0015] The sweat detection device provided by the present invention includes a sweat detection module and a body surface detection module, wherein the body surface detection module contacts the skin and generates a skin hydration signal, and the sweat detection module contacts the sweat of the subject to be tested and generates a sweat detection signal. Within a preset measurement time, the change amplitude of the skin hydration signal is judged, and based on the judgment result, the sweat detection signal is outputted correspondingly or the sweat correction data after correction based on the skin hydration signal is outputted. It can be seen that in the sweat detection device provided by the present invention, the hydration of the skin surface can be detected while the sweat of the human body is detected. Since the hydration of the skin surface directly corresponds to the sweating state of the subject to be tested, therefore, based on the judgment of the change amplitude of the skin hydration signal and the output of different detection data based on the judgment result, the problem of inconsistent biological information in sweat during sampling and detection in the prior art can be solved.

[0016] The present invention further defines the data output rule of the sweat detection device: when the change amplitude of the skin hydration signal is less than the set order of magnitude, the sweat detection signal is output; or when the change amplitude of the skin hydration signal is greater than or equal to the set order of magnitude, the sweat correction data corrected based on the skin hydration signal is output. It can be seen that adjusting the output detection data based on the change amplitude of the skin hydration signal measured by the body surface detection module can make the detection data more accurate.

[0017] In order to achieve stable and accurate detection of the sweat detection device, the sweat detection module includes at least two electrodes, each of which includes at least one contact surface in contact with sweat, and the contact surfaces are distributed in separate points; when sweat contacts the electrode and forms a current loop between the electrode and the sweat, the electrode outputs a sweat detection signal of the sweat, wherein the sweat detection signal includes a current signal and / or a voltage drop signal.

[0018] In the present invention, the contact surface in the sweat detection module is distributed in a discrete point shape, including any one of discrete central symmetrical distribution, staggered point matrix distribution, display point matrix distribution, and non-uniform point matrix distribution. The different distribution modes of the contact surface can meet the needs of different sweat, different measurement environments, different size requirements, and different accuracy and sensitivity, so that the sweat detection module has a wider applicability.

[0019] In the present invention, the area of ​​the contact surface is 0.01 mm 2 -10 mm 2 , to meet the needs of sweat detection with different accuracy and sensitivity.

[0020] Furthermore, in the invention, the body surface detection module also includes at least two body surface electrodes, wherein the sweat detection module and the body surface detection module both include a four-wire measurement method or a two-wire measurement method. Further limitations on the sweat detection module and the body surface detection module can satisfy the requirement of making the structure of the sweat detection device simpler under the premise of accurate detection.

[0021] The body surface detection module of the sweat detection device may include a variety of electrode structures. Among them, the body surface detection module includes a central electrode and a ring electrode arranged around the central electrode; or the body surface detection module includes two symmetrically arranged electrodes; or the body surface detection module includes a central electrode and three ring electrodes arranged around the central electrode from the inside to the outside; or the electrode includes multiple detection surfaces in contact with the skin, and the detection surfaces are distributed in a dispersed point shape. The corresponding body surface electrode distribution structure can be selected based on different detection locations or detection accuracy requirements.

[0022] In order to facilitate installation and carrying of the sweat detection device, the sweat detection device further includes a housing and a fixing member, wherein the housing and the fixing member are enclosed to form a U-shaped structure, and the sweat detection module and the body surface detection module are arranged in the U-shaped structure. The fixing member is integrally formed with the housing or detachably connected, which can be easily adjusted based on different functions and can have a variety of assembly methods.

[0023] In order to further improve the accuracy of sweat detection, the sweat detection device also includes a temperature detection module, an ultraviolet detection module, an ambient temperature and humidity detection module, and a heart rate detection module, which can generate corresponding data such as body surface temperature detection, ambient ultraviolet intensity detection, ambient temperature and humidity detection, and heart rate detection signals, so as to further associate the sweat detection signal with the body surface detection signal, thereby integrating multiple data to improve the accuracy of sweat detection.

[0024] In the present invention, the sweat detection device includes a processing module and a power module. The sweat detection module and the body surface detection module transmit sweat detection signals and skin moisture signals to the processing module respectively. The power module is connected to the sweat detection module, the body surface detection module and the processing module and provides electrical energy for them. Thus, electrical energy and signal processing can be effectively provided for the sweat detection module and the body surface detection module.

[0025] The sweat detection method provided by the present invention comprises the following steps: providing a body surface detection module and a sweat detection module; making the body surface detection module contact with the skin and generate a skin hydration signal, making the sweat of the subject to be tested contact with the sweat detection module, and the sweat detection module generates a corresponding sweat detection signal; judging the change amplitude of the skin hydration signal within a preset measurement time; and outputting the sweat detection signal correspondingly based on the judgment result; or outputting the sweat correction data corrected based on the skin hydration signal. It can be seen that in the sweat detection method provided by the present invention, the hydration of the skin surface can be detected while the sweat of the human body is detected. Since the hydration of the skin surface directly corresponds to the sweating state of the subject to be tested, based on the judgment of the change amplitude of the skin hydration signal and the output of different detection data based on the judgment result, the problem of inconsistent biological information in sweat during sampling and detection in the prior art can be solved.

[0026] Furthermore, the sweat detection method further specifies that when the change amplitude of the skin hydration signal is less than a set order of magnitude, a sweat detection signal is outputted accordingly; or when the change amplitude of the skin hydration signal is greater than a set order of magnitude, sweat correction data corrected based on the skin hydration signal is outputted accordingly. It can be seen that adjusting the output detection data based on the change amplitude of the skin hydration signal measured by the body surface detection module can make the detection data more accurate.

Brief Description of the Drawings

[0027] Figure 1 This is one of the functional module schematic diagrams of the sweat detection device provided in the first embodiment of the present invention.

[0028] Figure 2 It is a structural schematic diagram of a sweat detection device.

[0029] Figure 3 yes Figure 2 One of the schematic diagrams of the distribution of surface electrodes of the body surface detection module in the sweat detection device shown in FIG.

[0030] Figure 4 yes Figure 1 The second schematic diagram of the distribution of body surface electrodes of the body surface detection module in the sweat detection device is shown in FIG.

[0031] Figure 5 yes Figure 1 The third schematic diagram of the distribution of surface electrodes of the body surface detection module in the sweat detection device is shown in FIG.

[0032] Figure 6 It is a schematic diagram of the structure of the sweat detection device from another angle.

[0033] Fig. 7A This is the second schematic diagram of the functional modules of the sweat detection device.

[0034] Figure 7B It is a functional module schematic diagram of the heart rate detection module, processing module and control module in the sweat detection device.

[0035] Figure 8 is a side schematic diagram of a sweat detection device.

[0036] Fig. 9 It is a side schematic diagram of a sweat detection device including a supporting structure.

[0037] Fig.10 It is a structural schematic diagram of a sweat detection device including a concave structure.

[0038] Fig.11 is a schematic diagram of the structure of a sweat detection device in some other embodiments.

[0039] Fig.12 1 is a schematic diagram of the steps of the sweat detection method according to the second embodiment of the present invention.

[0040] Fig.13 Schematic diagram of the structure of a sweat detection module provided in the third embodiment of the present invention.

[0041] Fig.14 yes Fig.13 Schematic diagram of the electrode structure in the sweat detection module shown in.

[0042] Fig.15A This is one of the distribution diagrams of the contact surface of the electrodes in the sweat detection module.

[0043] Fig. 15B This is the second schematic diagram of the distribution of the contact surface of the electrodes in the sweat detection module.

[0044] Fig. 15C This is the third schematic diagram of the distribution of the contact surface of the electrodes in the sweat detection module.

[0045] Fig.15D This is the fourth schematic diagram of the distribution of the contact surface of the electrodes in the sweat detection module.

[0046] Fig.16 This is one of the distribution diagrams of the electrical connectors of the electrodes in the sweat detection module.

[0047] Fig.17 This is the second schematic diagram of the distribution of electrical connectors of electrodes in the sweat detection module.

[0048] Fig.18 Schematic diagram of the structure of the sweat detection module in some specific implementations.

[0049] Fig.19It is a structural schematic diagram of the sweat detection module of the first specific implementation manner of the third embodiment.

[0050] Fig. 20 yes Fig.19 Schematic diagram of the structure of the connection between the electrode block and the electrical connector in the sweat detection module shown in FIG.

[0051] Fig.21A This is a schematic diagram of the circuit principle of the sweat detection module using a four-wire measurement method.

[0052] Fig. 21B This is a schematic diagram of the circuit principle of the sweat detection module using a two-wire measurement method.

[0053] Fig. 22 It is a structural schematic diagram of a sweat detection module according to a second specific implementation manner of the first embodiment.

[0054] Fig.23 yes Fig.19 Schematic diagram of the structure of the electrical connector in the sweat detection module shown in .

[0055] Fig.24 It is a structural schematic diagram of a sweat detection module according to a third specific implementation manner of the third embodiment.

[0056] Fig.25 yes Fig.24 Schematic diagram of the structure of the electrical connector in the sweat detection module shown in .

[0057] Fig.26 4 is a schematic diagram of the steps of the sweat detection method provided in the third embodiment.

[0058] Fig. 27 yes Fig.26 FIG. 1 is a schematic flow chart of step P3 of the sweat detection method shown in FIG.

[0059] Fig.28 This is a schematic diagram of the relationship between volume, thickness and stability of experimental group 1 and comparison group 1-2 using physiological saline as the measuring liquid.

[0060] Fig.29 This is a schematic diagram of the relationship between volume, thickness and stability of experimental group 1 and comparison group 1 using normal saline as the measuring liquid.

[0061] Description of the accompanying drawings:

[0062] 60. sweat detection device; 61. sweat detection module; 611. electrode; 6110. contact surface; 62. body surface detection module; 621. body surface electrode; 6210. detection surface; 63. processing module; 64. power module; 601. temperature detection module; 602. heart rate detection module; 65. ultraviolet detection module; 66. ambient temperature and humidity detection module; 67. control module; 68. housing; 680. anti-slip structure; 681. first surface; 6811. first step; 6812. second step; 6819. reference surface; 682. second surface; 6821. waterproof and breathable membrane; 6822. optical lens; 683. support structure; 684. concave structure; 69. fixing part; 690. clamping space; 609. charging structure.

[0063] 10. sweat detection module; 11. electrode; 111. electrode block; 1110. contact surface; 112. electrical connector; 12. substrate; 121. concave portion; 1211. bottom surface of concave portion; 1212. concave portion opening; 101. excitation electrode; 1011. first excitation electrode; 1012. second excitation electrode; 102. sensing electrode; 1021. first sensing electrode; 1022. second sensing electrode; 105. working electrode; 106. reference electrode; 107. counter electrode; [Specific implementation method]

[0064] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0065] Please refer to Figure 1 The first embodiment of the present invention provides a sweat detection device 60, which can detect the sweat of a subject to be tested. The sweat detection device 60 includes a sweat detection module 61 and a body surface detection module 62, wherein the sweat detection module 61 contacts the sweat of the subject to be tested and generates a sweat detection signal, and the body surface detection module 62 contacts the skin and generates a skin hydration signal. Within a preset measurement time, when the change amplitude of the skin hydration signal is less than a set order of magnitude, the sweat detection signal is output, and when the change amplitude of the skin hydration signal is greater than or equal to the set order of magnitude, the sweat correction data corrected based on the skin hydration signal is output.

[0066] Continue as Figure 1As shown in , the sweat detection device 60 further includes a processing module 63 and a power module 64. The sweat detection module 61 and the body surface detection module 62 transmit the sweat detection signal and the skin moisture signal to the processing module 63. The power module 64 is connected to the sweat detection module 61, the body surface detection module 62 and the processing module 63, and provides electrical energy therefor.

[0067] like Figure 2 As shown in , in this embodiment, the sweat detection module 61 includes a plurality of electrodes 611, and the electrode 611 includes a contact surface 6110. When the sweat of the subject to be tested contacts the contact surface 6110, the electrode 611 outputs a corresponding current signal and / or a voltage drop signal of the sweat.

[0068] like Figure 2 As shown, the body surface detection module 62 also includes at least two body surface electrodes 621, and the body surface detection module 62 includes a detection surface 6210 for detecting the skin surface impedance of the subject to be detected. When the number of the body surface electrodes 621 is two, the body surface electrodes 621 of the body surface detection module 62 can be as follows: Figure 2 As shown in , it includes a central electrode and a ring electrode arranged around the central electrode; or as shown in Figure 3 As shown in , the body surface electrodes 621 are provided with two symmetrical arrangements.

[0069] When the number of body surface electrodes 621 is four, as Figure 4 As shown in , the body surface electrodes 621 of the body surface detection module 62 may be ring electrodes arranged from the inside to the outside; or as Figure 5 As shown in , each body surface electrode 621 includes multiple body surface electrode blocks 6211, and the multiple body surface electrode blocks 6211 are distributed in a dispersed manner, specifically, they can be discrete center symmetrical distribution, staggered dot matrix distribution, display dot matrix distribution, etc., and body surface electrode blocks with different functions can also be interspersed.

[0070] In this embodiment, the material of the body surface electrode 621 of the body surface detection module 62 includes any one of gold, silver, and titanium or a combination of several of them; and / or the material of the electrode 611 of the sweat detection module 61 may also include any one of gold, silver, and titanium or a combination of several of them.

[0071] In this embodiment, both the sweat detection module 61 and the body surface detection module 62 can adopt a four-wire measurement method or a two-wire measurement method.

[0072] It can be understood that the moisture of the skin described in this embodiment can be understood as the moisture of the skin is inversely proportional to the impedance of the skin surface. Specifically, when the skin is in a dry state, the impedance of the skin surface is relatively large, and its impedance can be several thousand to tens of thousands. When the skin is in a wet state, the impedance of the skin surface is relatively small, and its impedance can be tens to hundreds. Due to exercise or the temperature and humidity of the environment, the human body will produce sweat to make the human body comfortable. Therefore, by detecting the size of the impedance on the skin surface, the degree of moisture of the skin can be reflected accordingly, and then the sweating state of the human body can be detected.

[0073] Within a preset measurement time, such as the time from the user starting to exercise to sweating, such as 1 minute to 5 minutes, when the skin moisture signal changes by less than a preset order of magnitude, such as less than 2 orders of magnitude, the corresponding skin is always in a dry state and the subject to be tested is not sweating, or the skin is always in a wet state and the subject to be tested is always sweating. At this time, the sweat detection signal measured by the sweat detection module 61 can accurately reflect the true ion concentration of the sweat of the subject to be tested.

[0074] Within a preset measurement time, for example, from the time when the user stops exercising and sweating to the time when the body stops sweating, such as 1 minute to 5 minutes, when the skin hydration signal changes by greater than or equal to a preset order of magnitude, such as greater than or equal to 2 orders of magnitude, it indicates that the skin has suddenly changed from a dry state to a moist state, corresponding to the test subject producing sweat and the skin gradually becoming moist, or the skin has suddenly changed from a moist state to a dry state, corresponding to the test subject stopping sweating and the skin gradually becoming dry. At this time, the measured sweat detection signal needs to be corrected to obtain sweat correction data.

[0075] It can be understood that the above-mentioned preset measurement time can be adjusted accordingly based on different physiological characteristics of the subject to be measured and different detection accuracy. This is only used as an example and is not a limitation of the present invention.

[0076] Based on the detection of the skin moisture signal by the body surface detection module 62, the sweating state of the subject to be tested can be judged, so that the state of sweat can be detected more accurately. When the data meets the effective judgment, it is considered that the user has sweating. At this time, the sweat detection signal of the sweat detection module 61 is further read to determine the specific electrical characteristics of the sweat.

[0077] Since the body surface detection module 62 is used as a pre-judgment of the sweating situation, when the user gradually stops exercising, the body starts to cool down and gradually reduces sweating. At this time, the body surface detection module 62 will detect specific body surface features, that is, the skin hydration data. However, since the subject to be tested has stopped sweating, the sweat secretion has decreased at this time, and the sweat evaporates, resulting in a gradual increase in the sweat concentration remaining on the electrode 611 of the sweat detection module 61. At this time, the sweat concentration information cannot be read directly, but the sweat detection signal should be corrected through the skin hydration signal of the body surface electrode 621.

[0078] In this embodiment, the correction of the sweat detection signal data by the skin moisture signal of the body surface electrode 621 may include two methods:

[0079] The first is to establish a relationship database between skin hydration signals and sweat detection signals. When the change amplitude of the skin hydration signal exceeds a preset order of magnitude within a preset measurement time, the corrected sweat correction data is searched and output based on the above relationship database.

[0080] The second is to establish a computational model of the relationship between the skin hydration signal and the sweat detection signal. When the change amplitude of the skin hydration signal exceeds a preset order of magnitude within a preset measurement time, the skin hydration signal, the sweat detection signal, etc. are input into the computational model for calculation and then the sweat correction data is output. It can be understood that the above computational model can also be obtained based on deep learning.

[0081] It can be seen that the combination of the sweat detection module 61 and the body surface detection module 62 can achieve more accurate sweat detection.

[0082] Combination Figure 2 and Figure 6 As shown in , the sweat detection device 60 further includes a housing 68 and a fixing member 69. The housing 68 can accommodate the sweat detection module 61 and the body surface detection module 62, or the housing 68 and the fixing member 69 enclose a space that can accommodate the sweat detection module 61 and the body surface detection module 62. The fixing member 69 is integrally formed with the housing 68 or detachably connected, and the fixing member 69 can be a clamp, an adhesive member, or a hook, etc.

[0083] Continue as Figure 6 As shown in , the housing 68 and the fixing member 69 are enclosed to form a U-shaped structure, wherein the housing 68 is arranged on the outward side, and the fixing member 69 is arranged on the inward side. The fixing member 69 is formed with a clamping space 690 for clamping on the clothing of the subject to be tested.

[0084] Combination Figure 2 and Figure 6As shown in , the surface of the housing 68 can be divided into a first surface 681 and a second surface 682. The sweat detection module 61 is partially exposed on the first surface 681; the body surface detection module 62 can be arranged on the first surface 681, the second surface 682 or other surfaces of the housing.

[0085] like Figure 2 As shown in FIG. 7 , the sweat detection device 60 further includes a temperature detection module 601. The sweat detection module 61, the body surface detection module 62, and a portion of the temperature detection module 601 are exposed on the first surface 681. The temperature detection module 601 is a metal sheet that can measure body surface temperature.

[0086] Combination Figure 6 and Fig. 7A The sweat detection device 60 further includes an ultraviolet detection module 65, an ambient temperature and humidity detection module 66, and a control module 67. The ultraviolet detection module 65 and the ambient temperature and humidity detection module 66 are electrically connected to the processing module 63, and output corresponding ultraviolet detection signals and ambient temperature and humidity detection signals; the control module 67 is respectively connected to the ultraviolet detection module 65, the ambient temperature and humidity detection module 66, the sweat detection module 61, the body surface detection module 62, and the temperature detection module 601.

[0087] Among them, combined Figure 6 As shown in , a waterproof breathable membrane 6821 and an optical lens 6822 are provided on the second surface 682 of the housing 68. The waterproof breathable membrane 6821 corresponds to the ambient temperature and humidity detection module 66, and the waterproof breathable membrane 6821 can be combined with the ambient temperature and humidity detection module 66 for an internal sensor to measure the temperature and humidity of the external air. The optical lens 6822 corresponds to the ultraviolet detection module 65, so that ultraviolet rays can pass through the optical lens 6822 to reach the ultraviolet detection module 65, so as to realize the detection of ambient ultraviolet rays.

[0088] In order to make the sweat detection device 60 smaller in size and more compact in design, in this embodiment, the ultraviolet detection module 65, the ambient temperature and humidity module 66 and the control module 67 are not arranged coplanarly with the body surface detection module 62 and the sweat detection module 61.

[0089] It can be understood that in order to meet various sweat detection needs, the sweat detection device 60 can also include an ultraviolet detection module 65 or an ambient temperature and humidity detection module 66, and the corresponding processing module 63 can be connected to the ultraviolet detection module 65 or the ambient temperature and humidity detection module 66.

[0090] Furthermore, if Figure 7BAs shown in , in order to improve the sweat analysis accuracy of the sweat detection device 60, in this embodiment, the sweat detection device 60 may further include a heart rate detection module 602, and the heart rate detection module 602 may be connected to the processing module 63 and the control module 67 to achieve signal connection. The heart rate detection module 602 can detect changes in the heartbeat, heart rate, etc. of the subject to be tested. The heart rate detection module 602 can be set in the housing 68, and the heart rate detection module 602 is partially exposed on the first surface 681 or the second surface 682.

[0091] In some specific embodiments, the heart rate detection module 602 can also be set independently of the housing 68. For example, the heart rate detection module 602 can be set on a smart wearable device (such as a watch, a heart rate detection instrument, etc.). When the heart rate detection module 602 is set independently of the housing 68, the heart rate detection module 602 is wirelessly connected to the processing module 63 and the control module 67 through Bluetooth connection, 4G / 5G signal connection, etc., so as to realize signal communication between the heart rate detection module 602 and the processing module 63 and the control module 67.

[0092] In order to meet the needs of diversified use of the sweat detection device 60, the functional modules of the sweat detection device 60, such as the body surface detection module 62, the ultraviolet detection module 65, the ambient temperature and humidity detection module 66, etc., can be arranged non-coplanarly with the sweat detection module 61, wherein the contact surface 6110 corresponding to the sweat detection module 61 and the detection surface 6210 corresponding to the body surface detection module 62 can be arranged on planes facing different directions.

[0093] Combination Figure 6 and Figure 8 As shown in FIG, in order to facilitate the use of the sweat detection device 60 for detection, the body surface detection module 62 and the sweat detection module 61 are arranged on the same side of the housing 68. However, in order to prevent the sweat detection module 61 from directly contacting the skin, the distance from the contact surface 6110 of the sweat detection module 61 to the skin surface is greater than the distance from the detection surface 6210 of the body surface detection module 62 to the skin surface.

[0094] Combination Figure 6 and Figure 8As shown in , in some specific embodiments, in order to meet the distance limit between the contact surface 6110 of the sweat detection module 61 and the skin surface, a first step 6811 and a second step 6812 are correspondingly provided on the first surface 681 of the housing 68. The contact surface 6110 of the sweat detection module 61 is exposed on the first step 6811, and the detection surface 6210 of the body surface detection module 62 is exposed on the second step 6812. Among them, a plane inside the sweat detection device 60 is set as a reference plane 6819, and the height h1 from the first step 6811 to the reference plane 6819 is less than the height h2 from the second step 6812 to the reference plane 6819. It can be seen that the detection surface 6210 of the body surface detection module 62 and the contact surface 6110 of the sweat detection module 61 are provided on different planes.

[0095] Furthermore, if Figure 2 as well as Fig. 9 As shown in , in order to prevent the contact surface 6110 of the sweat detection module 61 from contacting the skin of the subject to be detected during use, in some specific examples, a support structure 683 is provided on the first step 6811, and the support structure 683 is provided at the edge of the detection surface of the sweat detection module 61, and the support structure 683 does not completely surround the detection surface of the sweat detection module 61. Specifically, the support structure 683 includes two symmetrically arranged arc-shaped protrusions. The height of the support structure 683 is 0.5mm-3mm, and specifically, the height of the support structure 683 can also be 0.5mm, 0.9mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2.1mm, 2.4mm, 2.7mm, and 3mm, etc.

[0096] Or in some other specific examples, such as Fig.10 As shown in the figure, a concave structure 684 is provided on the first step 6811, and the contact surface 6110 of the sweat detection module 61 is provided in the concave structure 684. The depth of the concave structure 684 is 0.5mm-3mm. Specifically, the depth of the concave structure 684 can also be 0.5mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.3mm and 3mm, etc.

[0097] It can be understood that in order to increase the portability of the sweat detection device 60, Fig.11 As shown in FIG. 6 , both the first surface 681 and the second surface (not shown) of the housing 68 are provided with an anti-slip structure 680 .

[0098] Continue as Fig.11As shown in , in some other implementations of this embodiment, the sweat detection device 60 further includes a charging structure 609, which is specifically provided on the surface of the fixing member 69. The charging structure 609 is electrically connected to the power module 64, and the charging structure 609 can be any one or a combination of a plug-in charging port, a magnetic charging port, a contact charging port or a wireless charging structure. Fig.11 As shown in , in this embodiment, the charging structure 609 is specifically a metal ejector pin, which can be used in conjunction with the power module 64.

[0099] The sweat detection device 60 provided in this embodiment can be used to detect sweat of a human body. The specific use steps include:

[0100] When the sweat detection device 60 is not in use, it is clipped on clothes or armbands through the fixing part 69 so as to be carried around. When the sweat detection device 60 is needed for detection, the sweat detection module 61, the body surface detection module 62, and the temperature detection module 601 of the sweat detection device 60 that are partially exposed on the first surface 681 are directed toward the skin, and the body surface detection module 62 and the temperature detection module 601 are closely attached to the skin. Based on the skin moisture signal detected by the body surface detection module 62, a judgment is made, and then a corresponding sweat detection signal is output; or after the sweat detection signal is corrected based on the skin moisture signal, sweat correction data is output.

[0101] In some more preferred solutions, the ultraviolet detection module 65 and the ambient temperature and humidity detection module 66 located on the second surface 682 can further detect the ultraviolet intensity, ambient temperature and humidity of the environment.

[0102] The skin surface temperature change, ultraviolet intensity, and ambient temperature and humidity data can be further combined as auxiliary data for sweat detection data correction. The specific correction can include the following two methods:

[0103] The first is to establish a relationship database among skin hydration signals, temperature detection signals, ultraviolet detection signals, ambient temperature and humidity signals, and sweat detection signals. When the change amplitude of the skin hydration signal exceeds a preset order of magnitude within a preset measurement time, the corrected sweat correction data is searched and output based on the above relationship database.

[0104] The second is to establish a computational model of the relationship between skin hydration signals, temperature detection signals, ultraviolet detection signals, ambient temperature and humidity signals, and sweat detection signals. When the skin hydration signal changes by more than a preset order of magnitude within a preset measurement time, the skin hydration signal, temperature detection signal, ultraviolet detection signal, ambient temperature and humidity signal, etc. are input into the computational model for calculation and then output sweat correction data. It is understandable that the above computational model can also be obtained based on deep learning.

[0105] It can be understood that in order to meet different usage scenarios, the above-mentioned ultraviolet intensity detection signal and ambient temperature and humidity detection signal can be selected based on different needs.

[0106] Furthermore, in this embodiment, the heart rate detection signal can also be used as auxiliary data for correcting sweat measurement data, and the corresponding heart rate detection signal can be obtained by the heart rate detection module 602. The heart rate detection module 602 can be arranged in the outer shell 68 or the heart rate detection module 602 can also be arranged independently of the outer shell 68.

[0107] The sweat detection device 60 provided in this embodiment has excellent stability, durability and sensitivity, and therefore can be used not only in smart watches, but also in professional fitness equipment. The sweat detection device 60 can also be set with different physical sizes when used in different scenarios.

[0108] Please refer to Fig.12 The second embodiment of the present invention provides a sweat detection method Q10, which has the technical features of the sweat detection device described in the first embodiment, and specifically includes the following steps:

[0109] Step Q1, providing a body surface detection module and a sweat detection module; making the body surface detection module contact with the skin and generate a skin moisture signal, making the sweat of the subject to be tested contact with the sweat detection module, and the sweat detection module generates a corresponding sweat detection signal;

[0110] Step Q2, determining the variation range of the skin moisture signal within a preset measurement time; and

[0111] Step Q3: Based on the judgment result, a corresponding sweat detection signal is output; or sweat correction data corrected based on the skin hydration signal is output.

[0112] Specifically, in order to improve the accuracy of the relevant sweat detection signal, the above step Q3 may further include:

[0113] Step Q31, when the variation of the skin moisture signal is less than a set order of magnitude, a sweat detection signal is output accordingly; or

[0114] Step Q32: When the variation of the skin hydration signal is greater than a set order of magnitude, the sweat correction data corrected based on the skin hydration signal is correspondingly output.

[0115] It can be understood that the sweat detection method described in this embodiment is based on the above-mentioned sweat detection device. Therefore, the relevant limitations on the body surface detection module and the sweat detection module therein are consistent with the relevant limitations on the sweat detection device in the above-mentioned first embodiment, and the same description content will not be repeated here.

[0116] In the above step Q31 and step Q32, the variation amplitude of the skin hydration signal can be understood as the variation of the impedance value of the surface skin of the subject to be measured within a preset measurement time, that is, within one minute or five minutes.

[0117] Within a preset measurement time, such as the time from the user starting to exercise to sweating, which can be any time from 1 minute to 5 minutes, when the skin hydration signal changes by less than a preset order of magnitude, such as less than 2 orders of magnitude, the corresponding skin is always in a dry state and the subject to be tested is not sweating, or the skin is always in a wet state and the subject to be tested is sweating. At this time, the sweat detection signal measured by the sweat detection module can accurately reflect the true ion concentration of the sweat of the subject to be tested.

[0118] Within a preset measurement time, such as the time from when the user stops exercising and sweating to when the body stops sweating, which can be any time from 1 minute to 5 minutes, when the skin hydration signal changes by greater than or equal to a preset order of magnitude, such as greater than or equal to 2 orders of magnitude, it indicates that the skin has suddenly changed from a dry state to a wet state, corresponding to the test subject producing sweat and the skin gradually becoming wet, or the skin has suddenly changed from a wet state to a dry state, corresponding to the test subject having stopped sweating and the skin gradually becoming dry. At this time, the measured sweat detection signal needs to be corrected to obtain sweat correction data.

[0119] In this embodiment, the corresponding sweat detection module and body surface detection module can measure synchronously or step by step. In some specific embodiments, the sweat detection module can detect data only after the body surface measurement module detects data. Therefore, combining sweat detection with body surface detection can avoid the situation where part of the sweat is embedded in the contact surface of the sweat detection module and cannot flow away, resulting in excessively high volatile concentration of sweat water, which causes misjudgment.

[0120] It can be understood that in the present embodiment, in the corresponding body surface detection module, the above-mentioned preset measurement time in the body surface detection module and the variation amplitude of the skin hydration signal will be affected by different subjects to be tested, different parts of the body, ambient temperature and humidity conditions, etc. For example, different subjects to be tested have different degrees of sweating under the same amount of exercise. For the same subject to be tested, the upper body generally sweats faster than the lower body. The influence of ambient temperature and humidity is even more obvious. Therefore, in order to improve the accuracy of sweat detection, it is often necessary to further correct the sweat detection signal, or to establish a calibration database for different subjects to be tested, so as to facilitate accurate detection.

[0121] In some better sweat detection methods, ultraviolet detection modules and environmental temperature and humidity detection modules are further used to detect the ultraviolet intensity, environmental temperature and humidity of the environment. The ultraviolet intensity and environmental temperature and humidity data can be further combined as auxiliary data for sweat detection signal correction. When correcting, weights corresponding to different detection data can also be assigned based on different subjects to be tested and the physiological characteristics of the subjects to be tested themselves, so as to make sweat detection more accurate.

[0122] See also Fig.13 The third embodiment of the present invention provides a sweat detection module 10. The sweat detection module 10 serves as the sweat detection module 61 in the sweat detection device 60 provided in the first embodiment, and can also be correspondingly applied to the sweat detection method provided in the second embodiment.

[0123] The sweat detection module 10 includes at least two electrodes 11 and a substrate 12 for accommodating the electrodes 11. At least one of the electrodes 11 includes at least one contact surface 1110 for contacting the sweat to be detected. The contact surface 1110 is distributed in the form of separate points. Fig.13 As shown in , the electrode 11 includes a plurality of electrode blocks 111 , and the contact surfaces 1110 correspond one-to-one to the electrode blocks 111 , or a single electrode block 111 includes a plurality of contact surfaces 1110 .

[0124] The sweat detection module 10 can detect the sweat to be detected and output corresponding detection data. The subject to be detected corresponding to the sweat to be detected can be a human or an animal.

[0125] like Fig.13 As shown in , the contact surface 1110 is coplanar with the surface of the substrate 12. In some other embodiments, the contact surface 1110 is higher or lower than the surface of the substrate 12.

[0126] The structure of the electrode block 111 includes any one or a combination of a cylinder, a prism, a pyramid, a cone, and a sphere. Fig.14As shown in , in this embodiment, the electrode block 111 is a cylindrical structure, and a single electrode block 111 includes a contact surface 1110 .

[0127] Combination Fig.13 and Fig.14 As shown in FIG. 1 , the area of ​​a single contact surface 1110 is 0.01 mm 2 -10mm 2 , specifically, it can also be 0.01mm 2 -2 mm 2 , 0.1mm 2 -5 mm 2 , 2mm 2 -6 mm 2 , 4mm 2 -8 mm 2 , 6mm 2 -10mm 2 Specifically, the area of ​​the contact surface 1110 can also be 0.01 mm 2 , 1mm 2 , 3mm 2 , 5mm 2 , 8mm 2 or 10mm 2 , to meet the needs of measuring different sweat types.

[0128] It can be understood that when the area of ​​the contact surface 1110 of a single electrode block 111 is within the above-mentioned range, the electrode 11 formed by the combination of multiple electrode blocks 111 can have an appropriate electromagnetic field coverage range, and at the same time, the sweat detection module 10 can maintain good sensor sensitivity, thereby obtaining more accurate and stable detection data.

[0129] In this embodiment, if Figures 15A-15D As shown in , the sweat detection module 10 includes a plurality of dispersedly arranged electrode blocks 111, and the distance between the electrode blocks 111 is small, so that the effective alternating electric field formed between the electrode blocks 111 can be forcibly compressed into a small space. Fig.15A As shown in, in order to further improve the stability and sensitivity of detection, the distance L between the edges of the contact surfaces 1110 of adjacent electrode blocks 111 is less than 2 mm. Furthermore, the distance L between the edges of the contact surfaces 1110 of adjacent electrode blocks 111 may be 0.01 mm-2 mm, 0.01 mm-1 mm, 0.05 mm-1.5 mm, etc. Specifically, the distance L may be 0.005 mm, 0.01 mm, 0.5 mm, 1 mm, 1.5 mm or 1.9 mm.

[0130] The shape of the contact surface 1110 of the electrode block 111 may include a circle, a regular polygon, or an irregular polygon. The shapes of the contact surfaces 1110 of the multiple electrode blocks 111 included in the same electrode 11 may be the same or different. The specific shape may be adjusted based on the usage scenario of the sweat detection module 10.

[0131] As shown in 15A , the plurality of contact surfaces 1110 are distributed in discrete central symmetry, wherein the areas of the contact surfaces 1110 of the electrode blocks 111 at different positions are different.

[0132] like Fig. 15B As shown in , the plurality of contact surfaces 1110 are distributed in a staggered array, wherein the contact surfaces 1110 of the electrode blocks 111 at different positions have the same area size.

[0133] like Fig. 15C As shown in , the multiple contact surfaces 1110 are distributed in an array, wherein the contact surfaces 1110 of the electrode blocks 111 at different positions have the same area size.

[0134] like Fig.15D As shown in , the multiple contact surfaces 1110 are distributed in a non-uniform lattice, wherein the areas of the contact surfaces 1110 of the electrode blocks 111 at different positions are inconsistent.

[0135] like Fig.16 As shown in , in order to make the sweat detection module 10 run more stably, the electrode 11 further includes an electrical connector 112 for electrically connecting to an external circuit, and the electrical connector 112 is disposed at one end of the electrode block 111 away from the contact surface 1110. One electrical connector 112 can be connected to one electrode block 111, or the electrical connector 112 can be electrically connected to multiple electrode blocks 111. The shape of the electrical connector 112 can be adjusted based on the distribution of the electrode blocks 111, and no corresponding limitation is made here.

[0136] Combination Fig.16 and Fig.17 As shown in , in the sweat detection module 10 , the number of the electrical connectors 112 can be 4, 2, or adjusted based on demand.

[0137] Combination Fig.13 and Fig.18 In this embodiment, the substrate 12 is made of any one of ceramic and insulating polymer, wherein the insulating polymer includes but is not limited to any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane, polyamide, polyimide, etc. or a combination of several thereof.

[0138] Specific as Fig.18As shown in , in some specific embodiments, a recess 121 is provided on one surface of the substrate 12, and the electrode 11 is accommodated in the recess 121; the recess 121 has a recess bottom surface 1211 and a recess opening 1212, and a distance h from the recess bottom surface 1211 to the recess opening 1212 is less than 3 mm, that is, the depth of the recess 121 is less than 3 mm. Specifically, the distance h from the recess bottom surface 1211 to the recess opening 1212 can also be 0.5 mm-3 mm, 0.5 mm-2 mm, 0.6 mm-1.5 mm, etc.

[0139] It can be understood that in order to make the lower recess 121 better play the role of collecting sweat, the size of the lower recess opening 1212 is larger than the size of the lower recess bottom surface 1211.

[0140] The contact surface 1110 of the electrode block 111 is exposed on the bottom surface 1211 of the recessed portion, so as to better contact with the sweat to be measured.

[0141] The arrangement of the concave portion 121 of the substrate 12 can provide a certain storage space for the sweat to be measured, so that the sweat to be measured can reach the measuring height in the concave portion 121, thereby improving the accuracy of the detection of the sweat to be measured.

[0142] The protected electrode blocks 111 provided in this embodiment are arranged in a separated point-like manner, so that the alternating electric field between the electrode blocks 111 can be compressed into a very small space, while taking into account the accuracy and durability of the sweat detection module 10.

[0143] See also Fig.19 In the sweat detection module 10 of the first specific implementation of the third embodiment, the electrode 11 can be further subdivided into two excitation electrodes 101 and two sensing electrodes 102, wherein the two sensing electrodes 102 are arranged between the two excitation electrodes 101. Each of the excitation electrodes 101 or the sensing electrode 102 includes at least one electrode block 111, and the electrode block 111 includes a contact surface 1110 in contact with the sweat to be detected, and the contact surface 1110 is distributed in a separated point shape; when the sweat to be detected contacts the electrode 11 and forms a current loop between the electrode 11 and the sweat to be detected, the electrode 11 outputs a sweat detection signal of the sweat to be detected, wherein the sweat detection signal includes a current signal and / or a voltage signal corresponding to a voltage drop.

[0144] Specifically, Fig.19As shown in , in this embodiment, the two excitation electrodes 101 can be further divided into a first excitation electrode 1011 and a second excitation electrode 1012, and the two sensing electrodes 102 are respectively a first sensing electrode 1021 and a second sensing electrode 1022. The second excitation electrode 1012 is arranged around the first excitation electrode 1011, and within the enclosed range of the second excitation electrode 1012, the first sensing electrode 1021 and the second sensing electrode 1022 are arranged around the first excitation electrode 1011;

[0145] It can be understood that, when the sweat to be tested contacts the first excitation electrode 1011, the second excitation electrode 1012, the first sensing electrode 1021, and the second sensing electrode 1022, the first excitation electrode 1011 and the second excitation electrode 1012 generate current, and the current passes through the sweat to be tested so that the sensing electrode generates a voltage signal with a corresponding voltage drop.

[0146] In order to obtain a better detection effect, the ratio of the total area of ​​the contact surfaces 1110 corresponding to the two excitation electrodes 101 to the total area of ​​the contact surfaces 1110 corresponding to the two sensing electrodes 102 is 1:(0.1-10). Specifically, the ratio of the total area of ​​the contact surfaces 1110 corresponding to the two excitation electrodes 101 to the total area of ​​the contact surfaces 1110 corresponding to the two sensing electrodes 102 can also be 1:1, 1:2 or 1:3, etc.

[0147] Further, such as Fig.19 As shown in , the contact surfaces 1110 of the electrode blocks 111 corresponding to the sensing electrodes 102 and the excitation electrodes 101 are distributed in the form of separated points.

[0148] Continue as Fig.19 As shown in , in a specific example: the number of electrode blocks 111 corresponding to the two sensing electrodes 102 is 12, the number of electrode blocks 111 arranged at the outermost periphery is also 12, and the number of electrode block 111 arranged at the center is 1.

[0149] In this specific embodiment, combined with Fig.19 , Fig. 20 as well as Figure 21A-21B As shown in , the operating principle of the sweat detection module 10 is as follows:

[0150] A current loop is formed between the first excitation electrode 1011 and the second excitation electrode 1012, and an external power supply applies an alternating current to the first excitation electrode 1011; since sweat covers the first excitation electrode 1011, the second excitation electrode 1012, the first sensing electrode 1021 and the second sensing electrode 1022, that is, the sweat is in contact with the first excitation electrode 1011, the second excitation electrode 1012, the first sensing electrode 1021 and the second sensing electrode 1022, an alternating electric field is generated between the first excitation electrode 1011 and the second excitation electrode 1012, and after the current generated by the first excitation electrode 1011 and the second excitation electrode 1012 passes through the sweat covering them, the total ion concentration in the sweat produces a voltage drop, which can be detected by an external voltage through the first sensing electrode 1021 and the second sensing electrode 1022.

[0151] For a clearer description, in this specific embodiment, the electrolyte concentration and resistance value of sweat are further described:

[0152] It can be understood that when the electrolyte concentration in sweat is low, the total ion concentration in sweat is relatively low, and the corresponding sweat conductivity is also low. For a certain volume of sweat, the corresponding equivalent impedance (i.e. resistance) is also quite high. When the impedance of the electrolyte is very high.

[0153] In order to further associate the resistance of the sweat to be tested with the electrolyte concentration of the sweat, a sweat electrolyte of known concentration can be configured and tested by the sweat detection module 10 to obtain its corresponding resistance, and then a calibration database of sweat resistance value and sweat electrolyte concentration can be established, in which different resistance values ​​and ion concentrations corresponding to the different resistance values ​​are pre-stored. When the sweat detection module 10 measures the resistance of the sweat to be tested, the corresponding sweat electrolyte concentration to be tested can be obtained.

[0154] Specifically, when sweat covers the first excitation electrode 1011, the second excitation electrode 1012, the first sensing electrode 1021 and the second sensing electrode 1022, the first excitation electrode 1011 and the second excitation electrode 1012 output excitation current, and the first sensing electrode 1021 and the second sensing electrode 1022 detect their corresponding excitation voltages; by calculating the excitation current and the excitation voltage, the corresponding resistance of the sweat to be tested can be obtained, that is, the electrolyte concentration (El ec tro lyte) of the sweat to be tested can be obtained.

[0155] Furthermore, since the concentration of sodium ions in sweat accounts for more than 90% of the total electrolyte concentration in sweat, and the sodium ion concentration is one order of magnitude higher than the potassium ion concentration, the sweat sodium ion concentration can be approximated by multiplying the sweat electrolyte concentration by a coefficient to obtain an equivalent sodium ion concentration, which can be expressed by the following formula:

[0156] Na + =El ec tro lyte*C;

[0157] Wherein, Na+ is the sodium ion concentration, Electrolyte is the electrolyte concentration, and C is the correction factor. The correction factor can be corrected based on the sweat to be tested. Taking human sweat as an example, the correction factor can be the ratio of the sodium ion concentration in sweat to the total electrolyte concentration in sweat. The system can be set in advance based on the usage scenario. It can be understood that the correction factor is adjusted accordingly based on sweat from different parts of the body.

[0158] Further integration Fig.19 , Fig. 20 as well as Figure 21A-21B As shown in , the four electrodes in the sweat detection module can adopt a four-wire measurement method or a two-wire measurement method.

[0159] Specific as Fig. 20 as well as Fig.21A As shown in , in some specific embodiments, a four-wire measurement method is used for detection. Specifically, the electrode blocks 111 of the excitation electrode 101 and the sensing electrode 102 can be electrically connected to a plurality of electrical connectors 112. In this specific embodiment, the number of electrical connectors 112 is four, which are electrically connected to the electrode blocks 111 corresponding to the two excitation electrodes 101 and the two sensing electrodes 102, respectively, and the electrical connectors 112 are insulated from each other. The four electrical connectors 112 are arranged in a circular ring from the inside to the outside. Among them, the two electrical connectors 112 corresponding to the excitation electrode 101 are respectively located at the center and the outermost periphery, while the two electrical connectors 112 corresponding to the sensing electrode 102 are located between the electrical connector 112 at the center and the electrical connector 112 at the outermost periphery.

[0160] In addition, the four-electrode measurement method can offset the contact resistance between the metal electrode and the sweat, and then obtain the resistance corresponding to the sweat to be measured.

[0161] like Fig. 21B As shown in , in some other specific examples of this embodiment, the sweat detection module 10 adopts a two-wire measurement method for measurement. Specifically, the electrode 11 also includes two electrical connectors 112 for electrically connecting to an external circuit. The electrical connector 112 is arranged at one end of the electrode block 111 away from the contact surface 1110, and one of the electrical connectors 112 is arranged in a ring with the other electrical connector 112 as the center, wherein the first excitation electrode 1011 and the first sensing electrode 1021 share an electrical connector 112 and are interconnected, and the second sensing electrode 1022 and the second excitation electrode 1012 share another electrical connector 112 and are interconnected.

[0162] In this specific embodiment, a four-electrode measurement method or a two-electrode measurement method is used for measurement. Since the AC signal generated by the excitation electrode 101 will offset the polarization phenomenon caused by contact with sweat, the sweat detection module 10 provided in this embodiment measures the detection results obtained by being stable and sensitive, among which the detection stability and sensitivity corresponding to the four-electrode measurement method will be better.

[0163] See also Fig. 22 and Fig.23 In the second specific implementation of the third embodiment, a sweat detection module 10 based on two-wire measurement is provided. In addition to the difference in the measurement method, the difference between the second specific implementation and the first specific implementation is also as follows: the electrode includes two electrodes 11, each electrode 11 includes at least one electrode block 111 and an electrical connector 112 connected to the electrode block 111, and each electrode 11 is insulated from each other. The electrode block 111 includes a contact surface 1110 that contacts the sweat to be detected, and the contact surface 1110 is distributed in a separated point shape.

[0164] It can be understood that, specifically, the contact surface 1110 may be distributed in a discrete central symmetrical distribution, a staggered dot lattice distribution, an array dot lattice distribution, a non-uniform dot lattice distribution, and the like.

[0165] An electrical connector 112 is also connected to one end of the electrode block 111 away from the contact surface 1110 .

[0166] In this embodiment, the steps of the sweat detection module 10 based on the two-wire measurement are as follows:

[0167] When the sweat to be tested covers the two electrodes 11, a current loop is formed between the electrodes 11, and the current can pass through the sweat to be tested to generate a voltage drop. Based on one of the electrodes 11, a current signal can be obtained, and the other electrode 11 can obtain a voltage signal corresponding to the voltage drop.

[0168] It can be seen that the sweat detection module 10 based on two-wire measurement provided in this embodiment can also detect the components of the sweat to be detected.

[0169] See also Fig.24 In the third specific implementation of the third embodiment, the sweat detection module 10 includes three electrodes 11, and the three electrodes 11 correspond to a working electrode 105, a reference electrode 106 and a counter electrode 107, wherein the materials of the working electrode 105, the reference electrode 106 and the counter electrode 107 are different, and they can be measured based on electrochemical methods.

[0170] In this embodiment, the working electrode 105, the reference electrode 106 and the counter electrode 107 each include at least one electrode block 111, and the electrode block 111 includes a contact surface 1110 that contacts the sweat to be measured, and the contact surface 1110 is distributed in the form of separated points.

[0171] It can be understood that in this embodiment, the contact surfaces 1110 of the electrode blocks 111 corresponding to the working electrode 105, the reference electrode 106 and the counter electrode 107 respectively can be distributed in the form of separated points, which can specifically include distribution in the form of discrete central symmetrical distribution, staggered dot matrix distribution, array dot matrix distribution, non-uniform dot matrix distribution, etc.

[0172] An ion selection layer material for sodium ions is set on the surface of the working electrode 105 of the sweat detection module, and the ion selection layer of the working electrode 105 is used to capture sodium ions. The reference electrode 106 mainly composed of Ag / AgCl provides a comparison standard for the potential electrode, and a polarization current passes through the counter electrode 107.

[0173] like Fig.25 As shown in FIG, an electrical connector 112 is also connected to one end of the electrode block 111 away from the contact surface 1110. Fig.25 As shown in , there are three electrical connectors 112 , all of which are ring-shaped in design. Each electrical connector 112 is connected to the working electrode 105 , the reference electrode 106 , and the counter electrode 107 , respectively.

[0174] It can be seen that in this embodiment, the three-electrode measurement method uses an electrochemical method to measure the sweat to be measured, wherein the multiple electrode blocks 111 in each electrode are distributed in separate points.

[0175] In some specific examples, assuming that electrochemical measurement of sodium ions in sweat is required, the steps include:

[0176] An ion selection layer material for sodium ions is arranged on the surface of the working electrode 105 of the sweat detection module. In the working state, a current loop is formed between the working electrode 105 and the counter electrode 107, so that the ion selection layer on the working electrode 105 can capture sodium ions, thereby inferring the concentration of sodium ions.

[0177] See also Fig.26 A fourth embodiment of the present invention provides a sweat detection method P30, which comprises the following steps:

[0178] Step P1, providing at least two electrodes, at least one of the electrodes comprising at least one contact surface in contact with the sweat to be tested, and the contact surface is distributed in the form of separated points;

[0179] Step P2, contacting the sweat to be detected with the contact surface to form a current loop between the electrode and the sweat to be detected; and Step P3, detecting a detection signal of the sweat to be detected outputted by the electrode;

[0180] The detection signal includes a current signal and / or a voltage signal corresponding to a voltage drop.

[0181] The sweat detection method described above can also be applied to the sweat detection module described in the third embodiment.

[0182] In order to further illustrate the above sweat detection method, in some specific implementations, the sweat of the human body is detected by a four-wire measurement method based on the above sweat detection module, and the specific contents are as follows:

[0183] The sweat detection module includes four electrodes, two of which are excitation electrodes, and the other two are sensing electrodes, wherein the two sensing electrodes are arranged between the two excitation electrodes.

[0184] It can be understood that in the sweat detection module, the electrode blocks include multiple ones, and the sweat to be detected needs to fully or partially cover all the electrode blocks in the sweat detection module. When the sweat to be detected only covers part of the electrode blocks, the multiple electrode blocks covered must come from four electrodes to meet the realization of the excitation and sensing functions.

[0185] In this embodiment, if different sweat needs to be detected, the electrode structure needs to be adjusted accordingly. The ion components in sweat are corrosive to the electrodes. Therefore, the contact surface of the corresponding electrode structure needs to be set to be corrosion-resistant to further improve the stability of the sweat detection module. In addition, the thickness and area of ​​the electrode structure also need to be adjusted. The sweat detection module with a four-electrode structure can have better detection stability.

[0186] The detection principle of the sweat detection module with four electrodes and the specific contents of the sweat detection module are the same as those described in the third embodiment above, and will not be repeated here.

[0187] It should be further explained that when the sweat detection module is a four-electrode structure, the detection signal of the sweat to be detected is outputted corresponding to the electrodes detected in the above step P3. Specifically, the two excitation electrodes can be further divided into a first excitation electrode and a second excitation electrode, and the two sensing electrodes are respectively a first sensing electrode and a second sensing electrode. The second excitation electrode is arranged around the first excitation electrode, and within the enclosed range of the second excitation electrode, the first sensing electrode and the second sensing electrode are arranged around the first excitation electrode;

[0188] It can be seen that Fig. 27As shown in , in some specific embodiments, the above step P3 may further include the following steps:

[0189] Step P31, applying an alternating current between the first excitation electrode and the second excitation electrode in contact with the sweat to be detected to form a current loop, and to generate a current signal;

[0190] Step P32: the current may pass through the sweat to be detected to generate a voltage drop, and a voltage signal corresponding to the voltage drop is formed between the first sensing electrode and the second sensing electrode in contact with the sweat to be detected; and

[0191] Step P33, outputting a current signal and a voltage signal corresponding to the voltage drop.

[0192] It can be understood that the output current signal and the voltage signal corresponding to the voltage drop in the above step P33 can be further converted into the resistance value of the sweat to be measured based on the formula R=U / I.

[0193] According to the description of the sweat detection module principle in the third embodiment, the resistance value of the sweat to be tested is proportional to the electrolyte concentration of the sweat to be tested, so a calibration database is established, wherein different resistance values ​​and ion concentrations corresponding to the different resistance values ​​are pre-stored in the calibration database. Therefore, based on the preset calibration database, the electrolyte concentration of the sweat to be tested can be further obtained based on the resistance value of the sweat to be tested.

[0194] Furthermore, the ion concentrations contained in different sweat samples to be tested are regular. Therefore, based on a preset correction coefficient, the electrolyte concentration of the sweat sample to be tested and the correction coefficient can be used to calculate the concentration of a certain ion in the sweat sample to be tested, so as to detect the sweat sample to be tested.

[0195] In this embodiment, the ion concentration in sweat can also be detected using a two-wire measurement method or a three-electrode measurement method.

[0196] Specifically, the steps for detecting the ion concentration in sweat based on the two-wire measurement method are as follows:

[0197] When the sweat to be tested covers the two electrodes, a current loop is formed between the electrodes, and the current can pass through the sweat to be tested to generate a voltage drop. Based on one of the electrodes, a current signal can be obtained, and the other electrode can obtain a voltage signal corresponding to the voltage drop.

[0198] In some other embodiments, the steps of detecting based on the three-electrode electrochemical method are as follows:

[0199] An ion selection layer material for sodium ions is set on the surface of the working electrode of the sweat detection module. The ion selection layer of the working electrode is used to capture sodium ions. The reference electrode mainly composed of Ag / AgCl provides a comparison standard for the potential electrode, and a polarization current is passed through the electrode.

[0200] An ion selection layer material for sodium ions is arranged on the surface of the working electrode of the sweat detection module. In the working state, a current loop is formed between the working electrode and the counter electrode, so that the ion selection layer on the working electrode can capture sodium ions, thereby inferring the concentration of sodium ions.

[0201] Compared with the existing measurement methods, the sweat detection method provided in this embodiment can perform stable and accurate sweat detection with less sweat to be tested, because the electrodes in the sweat detection module used include multiple contact surfaces distributed in discrete points.

[0202] Furthermore, the following testing method is provided to further illustrate the effects of the sweat detection module of the third embodiment and the sweat detection method of the third embodiment.

[0203] Experimental group 1 and comparison group 1 and comparison group 2 were set up, and physiological saline was used for stability test. The measurement method adopted the two-electrode measurement principle.

[0204] Experimental group 1: The sweat detection module includes two electrodes, and the electrodes include a plurality of electrode blocks, and the contact surfaces of the electrode blocks are distributed in separate points.

[0205] Comparative group 1: a central electrode and a peripheral ring electrode were used.

[0206] Comparative group 2: The measurement was performed using conventional plate electrodes.

[0207] The corresponding test results are as follows Fig.28 and Fig.29 as shown in .

[0208] Among them from Fig.28 It can be seen that the experimental group 1 corresponds to a rectangular lattice, which shows good stability. When the volume and thickness of the physiological saline are small, it shows good stability, and its stability can reach more than 95%.

[0209] The control group 1 corresponds to the triangle mark, and its stability is worse than that of the experimental group 1, especially when the thickness of the physiological saline is less than 1.6 mm and the volume is less than 0.5 ml, its stability is significantly lower than that of the experimental group 1.

[0210] The corresponding circle mark is in the comparison group 2, and its stability fluctuates greatly with the volume and thickness of the physiological saline.

[0211] based on Fig.28 It can be seen that the experimental group 1 corresponding to the present invention only needs very little liquid to reach a stable state.

[0212] Furthermore, the stability changes of experimental group 1 and comparative group 1 under different liquid volumes and thicknesses can be further compared. Fig.28 It can be seen that:

[0213] Experimental group 1 corresponds to a rectangular dot matrix, which exhibits good stability. When the volume and thickness of the physiological saline are small, it exhibits good stability, and the stability can reach more than 97%.

[0214] The control group 1 corresponds to the triangle mark, and its stability is worse than that of the experimental group 1, especially when the thickness of the physiological saline is less than 0.2 mm and the volume is less than 0.1 ml, its stability is significantly lower than that of the experimental group 1.

[0215] As the volume and thickness of the saline solution increased, the stability of the comparison group 1 also increased.

[0216] By comparing the experimental group 1 with the comparative group 1, the following table can be obtained: Table 1, Comparison of effective liquid coverage area and stability between the experimental group 1 and the comparative group 1

[0217]

[0218] Combination Fig.28 - Fig.29 As shown in Table 1, the stability of the experimental group 1 provided by the present invention can exceed 96% under the condition of very little liquid coverage. However, for the comparative group 1, a certain volume of liquid is still required to achieve a stability of more than 96%. Therefore, under the same conditions, the sweat detection module and the corresponding sweat detection method provided by the present invention can also achieve stable and accurate sweat ion concentration detection under the premise of less sweat volume.

[0219] In the embodiments provided by the present invention, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0220] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present invention.

[0221] In various embodiments of the present invention, it should be understood that the size of the serial numbers of the above-mentioned processes does not mean the necessary order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0222] The flowchart and block diagram in the accompanying drawings of the present invention illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementation schemes, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which is determined based on the functions involved. It should be particularly noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0223] Compared with the prior art, the sweat detection device and sweat detection method provided by the present invention have the following beneficial effects:

[0224] The sweat detection device provided by the present invention includes a sweat detection module and a body surface detection module, wherein the body surface detection module contacts the skin and generates a skin hydration signal, and the sweat detection module contacts the sweat of the subject to be tested and generates a sweat detection signal. Within a preset measurement time, the change amplitude of the skin hydration signal is judged, and based on the judgment result, the sweat detection signal is outputted correspondingly or the sweat correction data after correction based on the skin hydration signal is outputted. It can be seen that in the sweat detection device provided by the present invention, the hydration of the skin surface can be detected while the sweat of the human body is detected. Since the hydration of the skin surface directly corresponds to the sweating state of the subject to be tested, therefore, based on the judgment of the change amplitude of the skin hydration signal and the output of different detection data based on the judgment result, the problem of inconsistent biological information in sweat during sampling and detection in the prior art can be solved.

[0225] The present invention further defines the data output rule of the sweat detection device: when the change amplitude of the skin hydration signal is less than the set order of magnitude, the sweat detection signal is output; or when the change amplitude of the skin hydration signal is greater than or equal to the set order of magnitude, the sweat correction data corrected based on the skin hydration signal is output. It can be seen that adjusting the output detection data based on the change amplitude of the skin hydration signal measured by the body surface detection module can make the detection data more accurate.

[0226] The sweat detection method provided by the present invention comprises the following steps: providing a body surface detection module and a sweat detection module; making the body surface detection module contact with the skin and generate a skin hydration signal, making the sweat of the subject to be tested contact with the sweat detection module, and the sweat detection module generates a corresponding sweat detection signal; judging the change amplitude of the skin hydration signal within a preset measurement time; and outputting the sweat detection signal correspondingly based on the judgment result; or outputting the sweat correction data corrected based on the skin hydration signal. It can be seen that in the sweat detection method provided by the present invention, the hydration of the skin surface can be detected while the sweat of the human body is detected. Since the hydration of the skin surface directly corresponds to the sweating state of the subject to be tested, based on the judgment of the change amplitude of the skin hydration signal and the output of different detection data based on the judgment result, the problem of inconsistent biological information in sweat during sampling and detection in the prior art can be solved.

[0227] Furthermore, the sweat detection method further specifies that when the change amplitude of the skin hydration signal is less than a set order of magnitude, a sweat detection signal is outputted accordingly; or when the change amplitude of the skin hydration signal is greater than a set order of magnitude, sweat correction data corrected based on the skin hydration signal is outputted accordingly. It can be seen that adjusting the output detection data based on the change amplitude of the skin hydration signal measured by the body surface detection module can make the detection data more accurate.

[0228] The above is a detailed introduction to a sweat detection module and a preparation method thereof, a sweat detection device and a sweat detection method disclosed in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention, and any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sweat detection device, characterized in that: It includes a sweat detection module and a body surface detection module, wherein the sweat detection module includes at least two electrodes, and the electrode includes a contact surface that contacts with sweat; when sweat contacts the contact surface and forms a current loop between the electrode and the sweat, the electrode outputs a sweat detection signal of the sweat correspondingly, wherein the sweat detection signal includes a current signal and / or a voltage drop signal; The body surface detection module contacts the skin and generates a skin hydration signal. The sweat detection module contacts the sweat of the subject to be tested and generates a sweat detection signal. Within a preset measurement time, the change amplitude of the skin hydration signal is judged. When the change amplitude of the skin hydration signal is less than the set order of magnitude, the sweat detection signal is output; or when the change amplitude of the skin hydration signal is greater than or equal to the set order of magnitude, the sweat correction data corrected based on the skin hydration signal is output.

2. The sweat detection device as claimed in claim 1, characterized in that: Each of the electrodes includes at least one electrode block, and the electrode block includes the contact surface, and the contact surface is distributed in the form of separate points.

3. The sweat detection device according to claim 1, characterized in that: The contact surface is distributed in separated points, including any one of discrete central symmetrical distribution, staggered point lattice distribution, display point lattice distribution and non-uniform point lattice distribution.

4. The sweat detection device according to claim 1, characterized in that: The area of ​​a single contact surface is 0.01 mm 2 -10 mm 2 ; and / or the distance between the edges of the contact surfaces of adjacent electrode blocks is less than 2 mm.

5. The sweat detection device as claimed in claim 1, characterized in that: The body surface detection module also includes at least two body surface electrodes, and the sweat detection module and the body surface detection module both include a four-wire measurement method or a two-wire measurement method.

6. The sweat detection device according to claim 5, characterized in that: The body surface detection module includes a central electrode and a ring electrode arranged around the central electrode; or the body surface detection module includes two symmetrically arranged electrodes; or the body surface detection module includes a central electrode and three ring electrodes arranged around the central electrode from the inside to the outside; or the electrode includes multiple detection surfaces in contact with the skin, and the detection surfaces are distributed in a dispersed point shape.

7. The sweat detection device according to any one of claims 1 to 6, characterized in that: The sweat detection device also includes any one or a combination of a temperature detection module, a temperature detection module, an ultraviolet detection module, an ambient temperature and humidity detection module, and a heart rate detection module.

8. A sweat detection method, characterized in that: Provide body surface detection module and sweat detection module; Wherein, the sweat detection module includes at least two electrodes, and the electrode includes a contact surface that contacts the sweat; when the sweat contacts the contact surface and forms a current loop between the electrode and the sweat, the electrode outputs a sweat detection signal of the sweat correspondingly, wherein the sweat detection signal includes a current signal and / or a voltage drop signal; A body surface detection module is brought into contact with the skin and generates a skin hydration signal, and the sweat of the subject to be tested is brought into contact with the sweat detection module, and the sweat detection module generates a corresponding sweat detection signal; within a preset measurement time, the change amplitude of the skin hydration signal is judged; when the change amplitude of the skin hydration signal is less than a set order of magnitude, a sweat detection signal is output; or when the change amplitude of the skin hydration signal is greater than or equal to a set order of magnitude, sweat correction data corrected based on the skin hydration signal is output.

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