Skin detection device

Abstract

The utility model relates to the technical field of skin detection, and particularly discloses a skin detection device which comprises a probe, an electrode plate and at least two groups of temperature and humidity sensors, the probe is provided with a containing cavity which penetrates through the two ends of the probe. The electrode plate is arranged at one end of the probe corresponding to the accommodating cavity and is provided with a through hole communicated with the accommodating cavity; the temperature and humidity sensors are arranged in the containing cavity in the extending direction of the containing cavity. The temperature and humidity sensors and the electrode plate are arranged in a two-in-one manner, so that the cutin water content of the to-be-detected skin is detected by utilizing the electrode plate, and the percutaneous water loss rate of the to-be-detected skin is detected by utilizing each group of temperature and humidity sensors at the same time; therefore, the cutin water content and the percutaneous water loss rate of the same part of the skin can be detected at the same time, the influence of the previous and later measurement sequence on the detected skin state is avoided, and the credibility of detection data and the real-time performance of analysis are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of skin detection, in particular to a skin detection device. Background Art

[0002] Healthy skin protects the underlying structure from external factors and pathogenic microorganisms. Its main barrier is the outermost layer of the skin, the stratum corneum, which is composed of stratum corneum cells surrounded by lipids. The integrity of the stratum corneum is very important for maintaining the characteristics and functions of the skin. The external environment can affect the hydration of the stratum corneum, thereby changing the performance of the skin.

[0003] Among them, the water content of the skin stratum corneum and the transepidermal water loss rate (TEWL) are important parameters for measuring the integrity of the skin barrier and are used in various dermatology and skin measurement studies. Their relationship depends on the condition of the skin being measured, so the condition of the skin can also be detected by measuring these two values.

[0004] At present, there are two main methods for measuring the moisture content of skin keratin: electrical method and optical method. The internationally used detection device is mainly a detection probe based on the capacitance method. The existing scheme uses different detection probes to measure the moisture content of skin keratin and the transepidermal water loss rate of the skin to be tested. However, the order of measurement will affect the state of the skin to be tested, thereby reducing the credibility of the detection data and the real-time analysis, and it is impossible to simultaneously detect the state parameters of the same part of the skin. Utility Model Content

[0005] In order to solve at least one technical problem existing in the above-mentioned prior art, the utility model provides a skin detection device, which realizes the simultaneous detection of keratin water content and transepidermal water loss rate of the same part of the skin by combining a temperature and humidity sensor and an electrode sheet into a two-in-one setting, thereby avoiding the influence of the measurement order on the condition of the measured skin, and ensuring the credibility of the detection data and the real-time analysis.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A skin detection device, comprising:

[0008] The probe is provided with a receiving cavity, and the receiving cavity is provided through both ends of the probe;

[0009] An electrode sheet, which is arranged at one end of the probe corresponding to the accommodation cavity and is provided with a through hole communicating with the accommodation cavity;

[0010] At least two groups of temperature and humidity sensors are provided, and each group of temperature and humidity sensors is arranged in the accommodating cavity along the extension direction of the accommodating cavity.

[0011] In some embodiments of the present invention, it also includes:

[0012] Pressure sensor: The input end of the pressure sensor is connected to the probe to detect the pressure applied to one end of the probe.

[0013] In some more specific embodiments, it also includes:

[0014] Handshake, the two ends of the pressure sensor are connected to the probe and the handshake respectively.

[0015] In some further examples, a connecting hole is provided at the end of the pressure sensor, and a connecting position is provided at the handshake corresponding to the connecting hole, and a connector is plugged between the connecting hole and the connecting position to connect the end of the pressure sensor to the handshake.

[0016] In some more specific embodiments, a connecting hole is provided at the end of the pressure sensor, and a mounting position is provided at the probe corresponding to the connecting hole. A connector is plugged between the connecting hole and the mounting position to connect the end of the pressure sensor to the probe.

[0017] In some embodiments of the present invention, it also includes:

[0018] The detection seat is provided with an installation space corresponding to the probe and a port connected to the installation space. The probe is installed in the installation space by one end of the probe corresponding to the port.

[0019] In some more specific embodiments, the detection seat is further provided with a discharge channel connected to the installation space, and the discharge channel is provided corresponding to the other end of the probe.

[0020] In some more specific embodiments, the cross-section of the discharge channel gradually increases from the inside to the outside, wherein the side of the discharge channel connected to the probe is the inside, and the side of the discharge channel connected to the outside is the outside.

[0021] In some further examples, the detection seat includes a first half shell and a second half shell, the first half shell is provided with a first half cavity, the second half shell is provided with a second half cavity, and the first half shell and the second half shell cooperate to make the first half cavity and the second half cavity together constitute an installation space.

[0022] In an actual application scenario, the port is arranged on the first half shell, and / or the exhaust channel is arranged on the second half shell.

[0023] In summary, compared with the prior art, the skin detection device provided by the utility model has the following technical effects:

[0024] By arranging a accommodating cavity on the probe, the accommodating cavity runs through both ends of the probe, and then arranging an electrode sheet at one end of the probe corresponding to the accommodating cavity, and arranging a through hole connected to the accommodating cavity, and arranging each group of temperature and humidity sensors in the accommodating cavity along the extension direction of the accommodating cavity, the electrode sheet is used to detect the keratin water content of the skin to be tested, and at the same time, each group of temperature and humidity sensors is used to detect the transepidermal water loss rate of the skin to be tested, thereby realizing the simultaneous detection of the keratin water content and the transepidermal water loss rate of the same part of the skin, avoiding the influence of the order of previous and subsequent measurements on the state of the skin to be tested, and ensuring the credibility of the detection data and the real-time analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of an embodiment of a skin detection device of the utility model;

[0026] Figure 2 This is a disassembled diagram of an embodiment of a skin detection device of the present utility model.

[0027] The meanings of the reference numerals are as follows:

[0028] 1. Probe; 10. Accommodating cavity; 11. Mounting position; 2. Electrode sheet; 20. Perforation; 3. Temperature and humidity sensor; 4. Pressure sensor; 40. Connection hole; 5. Detection seat; 51. First half shell; 510. Port; 52. Second half cavity; 520. Exhaust channel; 6. Handshake; 61. First half cover; 610. Connection position; 611. Button; 62. Second half cover; 620. Mounting hole; 621. Lens; 63. Single chip microcomputer. DETAILED DESCRIPTION

[0029] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0031] It should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for describing specific embodiments and are not intended to limit the present invention.

[0033] according to Figure 1 and Figure 2 As shown, the utility model provides an embodiment of a skin detection device, comprising: a probe 1, an electrode sheet 2, and at least two groups of temperature and humidity sensors 3.

[0034] Specifically, the probe 1 is provided with a accommodating cavity 10, and the accommodating cavity 10 is arranged through both ends of the probe 1; the electrode sheet 2 is arranged at one end of the probe 1 corresponding to the accommodating cavity 10, and is provided with a through hole 20 connected to the accommodating cavity 10, and the keratin water content is calculated according to the capacitance signal data obtained when the electrode sheet 2 contacts the skin to be tested, and the through hole 20 can be arranged at the center of the electrode sheet 2, and the electrode sheet 2 can be arranged in a circular shape; each group of temperature and humidity sensors 3 is arranged in the accommodating cavity 10 along the extension direction of the accommodating cavity 10, that is, when one end of the probe 1 contacts the skin to be tested, each group of temperature and humidity sensors 3 is at a different horizontal plane relative to the skin to be tested, thereby collecting humidity data and temperature data at different distances above the skin to be tested, and calculating the water vapor pressure gradient according to the readings of each temperature and humidity sensor 3, the spacing between adjacent temperature and humidity sensors 3 and the opening area of ​​the accommodating cavity 10, thereby determining the transepidermal water loss rate of the skin to be tested, and the accuracy of the test can increase with the increase in the number of temperature and humidity sensors 3.

[0035] Through the above-mentioned two-in-one setting of the temperature and humidity sensor and the electrode sheet, the electrode sheet 2 is used to detect the keratin moisture content of the specified part of the skin to be tested, and at the same time, each group of temperature and humidity sensors 3 is used to detect the transepidermal water loss rate of the specified part of the skin to be tested, thereby realizing the simultaneous detection of the keratin moisture content and the transepidermal water loss rate of the same part of the skin, avoiding the influence of the order of previous and subsequent measurements on the state of the skin to be tested, and ensuring the credibility of the detection data and the real-time nature of the analysis.

[0036] Preferably, the skin detection device also includes: a detection seat 5, the detection seat 5 is provided with an installation space corresponding to the probe 1, and is provided with a port 510 connected to the installation space, and the probe 1 is installed in the installation space by setting one end of the probe 1 corresponding to the port 510; more preferably, the detection seat 5 is also provided with a discharge channel 520 connected to the installation space, and the discharge channel is set corresponding to the other end of the probe 1; furthermore, the cross-section of the discharge channel 520 gradually increases from the inside to the outside, wherein the side of the discharge channel 520 connected to the probe 1 is the inside, and the side of the discharge channel 520 connected to the outside is the outside; in addition, the inside can be set to an elliptical shape, and the outside can be set to a circle.

[0037] In actual application, the detection seat 5 includes a first half shell 51 and a second half shell. The first half shell 51 is provided with a first half cavity, and the second half shell is provided with a second half cavity 52. ​​The first half shell 51 cooperates with the second half shell so that the first half cavity and the second half cavity 52 together constitute an installation space; in addition, the port 510 is provided on the first half shell 51, and the exhaust channel 520 is provided on the second half shell.

[0038] Specifically, the skin detection device also includes: a pressure sensor 4, the input end of the pressure sensor 4 is connected to the probe 1 to detect the pressure applied to one end of the probe 1, and the pressure sensor 4 transmits real-time pressure data to the single-chip computer 63, and compensates for the influence of pressure on the moisture content detection of the skin to be tested and the measurement of transepidermal water loss through a specific algorithm, so as to obtain more accurate detection data.

[0039] More specifically, the skin detection device also includes: a handshake 6, and the two ends of the pressure sensor 4 are respectively connected to the probe 1 and the handshake 6; further, a connecting hole 40 is provided at the end of the pressure sensor 4, and a connecting position 610 is provided at the handshake 6 corresponding to the connecting hole 40, and a connector is plugged between the connecting hole 40 and the connecting position 610 to connect the end of the pressure sensor 4 to the handshake 6; further, a connecting hole 40 is provided at the end of the pressure sensor 4, and a mounting position 11 is provided at the probe 1 corresponding to the connecting hole 40, and a connector is plugged between the connecting hole 40 and the mounting position 11 to connect the end of the pressure sensor 4 to the probe 1; wherein the connector can be set as a screw, the connecting hole 40 can be set as a screw hole, and both the connecting position 610 and the mounting position 11 can be set with screw holes.

[0040] In practice, the single-chip microcomputer 63 is installed in the handshake 6, and the output end of the pressure sensor 4 is connected to the single-chip microcomputer 63, so that the single-chip microcomputer 63 receives the pressure data detected by the pressure sensor 4; optionally, the handshake 6 includes a first half cover 61 and a second half cover 62, and the first half cover 61 and the second half cover 62 cooperate to form a mounting space, and the single-chip microcomputer 63 is installed in the mounting space, and the connection position 610 is arranged on the first half cover 61, and the second half cover 62 is also provided with a mounting hole 620, and a lens 621 is installed on the mounting hole 620, and the mounting space can be observed through the lens 621; in actual use, the handshake 6 is also provided with a button 611 for starting the single-chip microcomputer 63 to receive data and perform calculation and analysis, and the button 611 can be set on the first half cover 61; wherein, the temperature and humidity sensor 3 can be connected through I2C (Inter-Integrated Circuit, integrated circuit bus) or SPI (Serial Peripheral The data is output to the MCU through the communication method of serial peripheral interface (Serial Peripheral Interface), and the electrode sheet 2 outputs the data to the MCU through the circuit. The MCU can process the data by itself or send the data to DXP (Digital Experience Platform) for calculation, and finally output the calculation results to the LCD screen (Liquid Crystal Display) or transmit it to the mobile phone app or cloud via Bluetooth.

[0041] The working principle of the above-mentioned skin detection device embodiment is described below:

[0042] The transepidermal water loss rate TEWL is: , where D is the water vapor diffusion coefficient, p is the water vapor partial pressure, and x is the distance between two adjacent temperature and humidity sensors 3.

[0043] The water vapor partial pressure p can be determined by the relative humidity value rh measured by the temperature and humidity sensor 3 and the water vapor saturation vapor pressure Psat, and the water vapor saturation vapor pressure Psat is determined by the temperature T measured by the temperature and humidity sensor 3: .

[0044] The calculation principle of skin keratin water content is as follows: the increase in skin water content will lead to an increase in the dielectric constant of the stratum corneum skin, and the charge storage capacity in the capacitor will also increase, which will in turn cause an increase in skin capacitance. Based on this principle, the skin capacitance model can be simplified to the following formula: , use the electrode sheet to contact the skin surface, measure the capacitance value according to the capacitance measurement circuit of the electrode sheet 2, and then calculate the dielectric constant according to the formula, so as to calculate the water content of skin keratin. It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. Although optional embodiments of the utility model embodiments have been described, once the technicians in this field know the basic creative concept, they can make additional changes and modifications to these embodiments. Therefore, the attached claims are intended to be interpreted as including optional embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0045] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or terminal device including the elements.

[0046] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. At the same time, for those skilled in the art, according to the principle and implementation method of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A skin detection device, characterized in that: include: A probe (1), wherein the probe (1) is provided with a receiving cavity (10), and the receiving cavity (10) is provided through both ends of the probe (1); An electrode sheet (2), the electrode sheet (2) being arranged at one end of the probe (1) corresponding to the accommodating cavity (10) and being provided with a through hole (20) communicating with the accommodating cavity (10); At least two groups of temperature and humidity sensors (3), each group of the temperature and humidity sensors (3) being arranged in the accommodating cavity (10) along an extension direction of the accommodating cavity (10).

2. The skin detection device according to claim 1, characterized in that: Also includes: A pressure sensor (4), wherein the input end of the pressure sensor (4) is connected to the probe (1) to detect the pressure exerted on one end of the probe (1).

3. The skin detection device according to claim 2, characterized in that: Also includes: A handshake (6), wherein two ends of the pressure sensor (4) are respectively connected to the probe (1) and the handshake (6).

4. The skin detection device according to claim 3, characterized in that: The end of the pressure sensor (4) is provided with a connection hole (40), and the handshake (6) is provided with a connection position (610) corresponding to the connection hole (40). A connector is plugged into the connection hole (40) and the connection position (610) so that the end of the pressure sensor (4) is connected to the handshake (6).

5. The skin detection device according to claim 2, characterized in that: The end of the pressure sensor (4) is provided with a connection hole (40), the probe (1) is provided with a mounting position (11) corresponding to the connection hole (40), and a connector is plugged into the connection hole (40) and the mounting position (11) so that the end of the pressure sensor (4) is connected to the probe (1).

6. The skin detection device according to any one of claims 1 to 5, characterized in that: Also includes: A detection seat (5), wherein the detection seat (5) is provided with an installation space corresponding to the probe (1), and is provided with a port (510) connected to the installation space, and the probe (1) is installed in the installation space by setting one end of the probe (1) corresponding to the port (510).

7. The skin detection device according to claim 6, characterized in that: The detection seat (5) is also provided with a discharge channel (520) communicating with the installation space, and the discharge channel is provided corresponding to the other end of the probe (1).

8. The skin detection device according to claim 7, characterized in that: The cross-section of the discharge channel (520) gradually increases from the inside to the outside, wherein the side of the discharge channel (520) connected to the probe (1) is the inside, and the side of the discharge channel (520) connected to the outside is the outside.

9. The skin detection device according to claim 7, characterized in that: The detection seat (5) comprises a first half shell (51) and a second half shell, the first half shell (51) being provided with a first half cavity, the second half shell being provided with a second half cavity (52), the first half shell (51) being matched with the second half shell so that the first half cavity and the second half cavity (52) together constitute the installation space.

10. The skin detection device according to claim 9, characterized in that: The port (510) is arranged on the first half shell (51), and / or the discharge channel (520) is arranged on the second half shell.

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