Skin grease detection method, skin grease detection instrument and skin grease detection system based on infrared technology

Abstract

The invention discloses a skin grease detection method, a detection instrument and a detection system based on an infrared technology. The method comprises the following steps: S101, controlling to emit an infrared signal to detected skin; s102, controlling, receiving and detecting an infrared signal reflected by the skin, and converting the infrared signal into an electric signal; and S103, acquiring the grease state of the detected skin based on the electric signal. Skin grease detection is carried out on the basis of the absorption and reflection principle of skin on infrared signals (the more skin surface grease, the more absorbed infrared rays, the less reflected infrared rays, the weaker light received by the infrared receiver and the smaller corresponding electric signals), the detection speed is high, the cost is low, and the result is accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of skin detection, in particular to a skin oil detection method, a detection instrument and a detection system based on infrared technology. Background Art

[0002] There are two main methods for measuring sebum (skin oil) that are recognized worldwide. The first method uses SebumeterSM810 (CK, Germany), which uses the world-recognized The first method is based on the principle of oil spot photometer. A 0.1mm special matte tape is pressed on the skin. After absorbing the oil on the human skin, the tape will become a translucent tape, and the light transmittance will change accordingly. Therefore, its transparency is proportional to the amount of oil. The more oil absorbed, the greater the light transmittance. The oil content of the skin is measured by measuring the light transmittance. The second method uses the principle of image analysis. After the skin to be tested is degreased, an oil-absorbing sticky microporous film is pressed on the skin. Since oil does not scatter light, when the air in the micropores of the film is replaced by the absorbed oil, the film will become transparent and form a light-transmitting point consistent with the opening of the hair follicle. After collecting the tape, combined with professional image analysis software, the number of sebum points, maximum and minimum values, and sebum excretion rate of the measured area are quantified. Both of these solutions have certain limitations.

[0003] The limitations of the first method are as follows:

[0004] 1. High cost. CK sebum testing equipment costs tens of thousands of yuan and requires specific oil-absorbing paper consumables;

[0005] 2. The oil-absorbing paper will still be affected by moisture, resulting in a decrease in accuracy;

[0006] 3. The detection effect of rough skin such as scalp and other hair-containing areas has large errors;

[0007] 4. It takes a long time. It takes 15 seconds to use the oil-absorbing paper, and then tens of seconds of equipment analysis time;

[0008] The limitations of the second method are as follows:

[0009] 1. The cost is high, and oil-absorbing paper consumables are required during use;

[0010] 2. The detection effect of rough skin such as scalp and other hair-containing areas has large errors;

[0011] 3. The oil-absorbing paper will still be affected by moisture, resulting in a decrease in accuracy;

[0012] Furthermore, both methods are performed in laboratories or the subjects are unable to complete the sebum testing of the designated area by themselves. Summary of the invention

[0013] The main purpose of the present invention is to propose a skin oil detection method, detection instrument and detection system based on infrared technology, which overcomes the shortcomings of the prior art. The present invention performs skin oil detection based on the principle of skin absorption and reflection of infrared signals (the more oil on the skin surface, the more infrared rays are absorbed, the less infrared rays are reflected, the weaker the light received by the infrared receiver, and the smaller the corresponding electrical signal). The detection speed is fast, the cost is low, and the results are accurate.

[0014] The present invention adopts the following technical solution:

[0015] In the first aspect, a skin oil detection method based on infrared technology comprises:

[0016] S101, controlling the emission of infrared signals to the detected skin;

[0017] S102, controlling the receiving and detecting of the infrared signal reflected by the skin and converting it into an electrical signal;

[0018] S103, acquiring and detecting the oily state of the skin based on the electrical signal.

[0019] Preferably, the oil state includes the amount of oil; and acquiring and detecting the amount of oil on the skin based on the electrical signal specifically includes:

[0020] The electrical signal is processed by A / D to obtain an electrical signal value, and the amount of oil on the detected skin is obtained based on a quadratic equation of the electrical signal value; the electrical signal value is negatively correlated with the amount of oil.

[0021] Preferably, the oil state includes an oil level; acquiring and detecting the oil level of the skin based on the electrical signal specifically includes:

[0022] The electrical signal is processed by A / D to obtain an electrical signal value, the electrical signal value is compared with a preset range, and the oil level of the detected skin is obtained according to the range to which the electrical signal belongs.

[0023] Preferably, the oil level includes dryness and lack of oil, water-oil balance, light oil, medium oil and heavy oil; the electrical signals corresponding to dryness and lack of oil, water-oil balance, light oil, medium oil and heavy oil decrease in sequence.

[0024] Preferably, controlling the receiving and detecting of the infrared signal reflected by the skin and converting it into an electrical signal specifically includes:

[0025] The infrared signal reflected by the skin is received and detected, and converted into a current signal; the current signal is converted into a voltage signal through a voltage-dividing resistor.

[0026] Preferably, after the current signal is converted into a voltage signal through a voltage-dividing resistor, the method further comprises:

[0027] amplifying the voltage signal;

[0028] It is determined whether the voltage signal after the amplification process reaches a preset value. If so, S103 is executed.

[0029] On the other hand, a skin oil detection instrument based on infrared technology comprises:

[0030] The detection terminal comprises a conductive transmitting terminal and a receiving terminal respectively in contact with the detection skin;

[0031] The infrared module is arranged inside the skin oil detection instrument, and includes an infrared transmitter and an infrared receiver; the infrared transmitter is used to transmit infrared signals to the detection skin; the infrared receiver is used to receive the infrared signals reflected by the detection skin and convert them into electrical signals;

[0032] The control module comprises an infrared control unit and a data processing unit; the infrared control unit is used to control the on / off of the infrared transmitter and the infrared receiver; the data processing unit is used to receive the electrical signal sent by the infrared receiver.

[0033] Preferably, the data processing unit is also used to amplify the electrical signal and determine whether the amplified electrical signal reaches a preset value. If it does, the electrical signal value is obtained through A / D processing, and the oil status of the skin is detected based on the electrical signal value.

[0034] Preferably, the data processing unit is also used to amplify the electrical signal and determine whether the amplified electrical signal reaches a preset value. If it does, the electrical signal value is obtained through A / D processing and the electrical signal value is sent to an external terminal device.

[0035] Preferably, the skin oil detection instrument based on infrared technology further includes: an infrared focusing lens arranged between the detection terminal and the infrared module; the infrared signal emitted by the infrared transmitter is focused by the infrared focusing lens.

[0036] Preferably, the skin oil detection instrument based on infrared technology further comprises a switch module; the switch module is connected to the control module and is used to start the skin oil detection instrument and / or trigger the infrared module.

[0037] Preferably, the infrared technology-based skin oil detection instrument further comprises: a communication module; the control module is connected to an external terminal device via the communication module.

[0038] Preferably, the infrared technology-based skin oil detection instrument further comprises: a sound prompt module; the sound prompt module is connected to the control module to provide voice prompts.

[0039] In the third aspect, a skin oil detection system based on infrared technology includes the skin oil detection instrument based on infrared technology; and also includes an external terminal device; the external terminal device is connected to the skin oil detection instrument based on infrared technology, and is used to receive the oil status of the skin and provide prompts.

[0040] In a fourth aspect, a skin oil detection system based on infrared technology includes the skin oil detection instrument based on infrared technology; and also includes an external terminal device; the external terminal device is connected to the skin oil detection instrument based on infrared technology, and is used to receive an electrical signal value, and obtain the oil status of the detected skin based on the received electrical signal value and provide a prompt.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] (1) The present invention includes controlling the emission of infrared signals to the detected skin; controlling the reception of infrared signals reflected by the detected skin and converting them into electrical signals; and obtaining the oily state of the detected skin based on the electrical signals. The present invention performs skin oil detection based on the principle of skin absorption and reflection of infrared signals (the more oil there is on the skin surface, the more infrared rays are absorbed, the less infrared rays are reflected, the weaker the light received by the infrared receiver, and the smaller the corresponding electrical signal), with fast detection speed and low cost (the main components only need an infrared transmitter and an infrared receiver), and accurate results.

[0043] (2) The present invention can output various forms of detection results to meet the needs of users in various aspects. Specifically, when the user expects to obtain the amount of oil, the electrical signal is processed by A / D to obtain an electrical signal value, and the amount of oil on the detected skin is obtained based on the quadratic equation of the electrical signal value; when the user expects to obtain the oil level, the electrical signal is processed by A / D to obtain an electrical signal value, and the electrical signal value is compared with a preset range, and the oil level of the detected skin is obtained according to the range to which the electrical signal belongs;

[0044] (3) The present invention detects the oiliness of the skin only when the electrical signal corresponding to the reflected infrared signal reaches a preset value, thereby preventing inaccurate detection results from being performed when the skin is not in close contact;

[0045] (4) The present invention provides an infrared focusing lens between the detection terminal and the infrared module, so that the divergent infrared light emitted by the infrared transmitter can be focused through the infrared focusing lens, so that more infrared light is focused on the skin, which can make the detected electrical signal value more obvious and improve the accuracy of the detection result.

[0046] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention so that it can be implemented in accordance with the contents of the specification, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

[0047] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a flow chart of a skin oil detection method based on infrared technology according to Embodiment 1 of the present invention;

[0049] Figure 2 It is a schematic diagram showing the changes in the amount of skin oil and the infrared detection voltage value of different testers in the first embodiment of the present invention;

[0050] Figure 3 This is a curve diagram of the infrared detection voltage value and the amount of skin oil according to the first embodiment of the present invention;

[0051] Figure 4 This is a three-dimensional schematic diagram of skin oil detection based on infrared technology according to the second embodiment of the present invention;

[0052] Figure 5 It is a cross-sectional view of skin oil detection based on infrared technology according to the second embodiment of the present invention;

[0053] Figure 6 This is a decomposition diagram of skin oil detection based on infrared technology according to the second embodiment of the present invention;

[0054] Figure 7 This is a schematic diagram of the structure of a contact terminal and skin forming a loop according to the second embodiment of the present invention;

[0055] Figure 8 This is a structural block diagram of a skin oil detection system based on infrared technology according to Embodiment 3 and Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0058] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, step identifiers S101, S102, S103, etc. are only used for convenient expression and do not represent the execution order, and the corresponding execution order can be adjusted.

[0061] Embodiment 1

[0062] See also Figure 1 As shown, this embodiment provides a skin oil detection method based on infrared technology, including:

[0063] S101, controlling the emission of infrared signals to the detected skin;

[0064] S102, controlling the receiving and detecting of the infrared signal reflected by the skin and converting it into an electrical signal;

[0065] S103, acquiring and detecting the oily state of the skin based on the electrical signal.

[0066] It should be noted that the execution subjects of the above-mentioned S101~S103 are all control modules of skin oil detection instruments based on infrared technology (such as control chips such as single-chip microcomputers or MCUs), or the execution subjects of S101~S102 are control chips of skin oil detection instruments based on infrared technology (such as single-chip microcomputers or MCUs), and the execution subject of S103 is an external terminal device or a cloud server. The S103 can also be partially executed on the control module of the skin oil detection instrument based on infrared technology, and partially executed on the external terminal device or the cloud server. The specific settings can be made as needed, and this embodiment is not limited.

[0067] Specifically, the present invention transmits infrared signals through an infrared transmitter, and receives infrared signals reflected by the skin through an infrared receiver integrated on the same light source board. After the skin oil detection instrument based on infrared technology is turned on, when the detection terminal contacts the skin and forms a sealed state, the infrared transmitter is switched on and the infrared signal is transmitted, and the oil detection result can be obtained after waiting for a few seconds.

[0068] The working principle of this embodiment is as follows:

[0069] 1. Infrared emission: The control chip on the circuit board controls the IO port IR-TX1 to output high and low levels to control the short-range signal infrared transmitter to emit infrared signals.

[0070] Specifically, when the IO port IR-TX1 is controlled to output a high level, the infrared transmitter transmits an infrared signal; when the IO port IR-TX1 is controlled to output a low level, the infrared transmitter is turned off.

[0071] 2. Infrared reception: The control chip on the circuit board outputs the control level through the control IO port IR-RX_EN to control the receiving circuit to receive infrared signals.

[0072] Specifically, when the control IO port IR-RX_EN outputs a high level, the infrared receiver is in a working state and can receive infrared signals sent by the infrared transmitter; when the control IO port IR-RX_EN outputs a low level, the infrared receiver is in a closed state.

[0073] 3. Specific working principle of infrared light receiving and transmitting:

[0074] Short press the switch (button) of the skin oil detection instrument. After the control chip on the circuit board receives the signal, it first controls the IO port IR-RX_EN to output a high level, and the infrared receiver is in working state and can receive infrared signals; after turning on the receiving circuit, it immediately controls the IO port IR-TX1 to output a high level, and the infrared transmitter transmits an infrared signal (940nm infrared light); part of the infrared light emitted to the skin is absorbed by the skin, and the other part is reflected by the skin; if the emitted light signal is received by the infrared receiver, it will be immediately converted into a current signal, and the current signal will be converted into a voltage signal through a voltage divider resistor. The converted voltage signal will be amplified in the two-pole operational amplifier inside the main control chip. The amplified signal will be transmitted to the main control chip for further processing to determine whether an infrared signal is received (if the signal voltage amplitude is not zero, it is considered that the signal is received). If the received signal is judged to be the expected signal (reaching the preset value), an interrupt occurs inside the main control chip, triggering the internal ADC (circuit module that converts the voltage signal of the analog signal machine into a digital signal, i.e., data) to convert the received voltage signal into a numerical value, and the obtained numerical value is processed to obtain the grease status or the obtained numerical value is transmitted to the external terminal device through the communication module on the circuit board for processing to obtain the grease status. At this time, when the control chip controls the IO port IR-TX1 to output a low level, the infrared transmitter is turned off. When the control IO port IR-TX1 outputs a low level, the infrared receiver LED2 is turned off.

[0075] 4. As the amount of oil on the skin surface increases, more infrared rays are absorbed and less infrared rays are reflected. The light received by the infrared receiver becomes weaker, the converted voltage becomes smaller, and the value becomes lower.

[0076] In addition, the IO ports IR-RX_EN and IR-TX1 are sequentially controlled to output high levels after contacting the skin to make the detection area airtight. Specifically, the switch button is short-pressed after the detection terminal is in close contact with the skin to sequentially control the IO ports IR-RX_EN and IR-TX1 to output high levels. Alternatively, the control chip detects that the electrical signal output by the output terminal reaches a preset threshold and sequentially controls the IO ports IR-RX_EN and IR-TX1 to output high levels. In this way, the skin oil detection instrument can be in contact with the skin to form a sealed state and the interior of the skin oil detection instrument is black, which minimizes the impact of ambient light on the detection results and ensures the accuracy of the detection results.

[0077] In an optional solution of this embodiment, the oil state includes the oil amount; and acquiring the oil amount of the detected skin based on the electrical signal specifically includes:

[0078] The electrical signal is processed by A / D to obtain an electrical signal value, and the amount of oil on the detected skin is obtained based on a quadratic equation of the electrical signal value; the electrical signal value is negatively correlated with the amount of oil.

[0079] As shown in Table 1 below, the voltage values ​​collected by different testers when the amount of epidermal oil gradually increased. During the test, the detection environment, detection distance and application area were the same for each test.

[0080] Table 1

[0081]

[0082] It can be seen from Table 1 that, under the control of variables, the detected voltage value decreases as the amount of skin oil increases.

[0083] See also Figure 2 As shown in the figure, it is a schematic diagram of the changes in the amount of skin oil and infrared detection voltage values ​​of different testers drawn according to Table 1. Among them, the horizontal axis represents the tester, and the vertical axis represents the infrared detection voltage value of the corresponding oil; series 1-10 represent the gradually increasing amount of oil, series 1 has the smallest amount of oil, and series 10 has the largest amount of oil. It can be seen from the figure that different testers apply the same amount of oil, and the voltage values ​​obtained by infrared detection of their oil conditions are basically the same.

[0084] According to the test data, the relationship between the voltage value and the amount of skin oil can be fitted. For details, see Figure 3 As shown. Further obtain the corresponding fitting equation, such as

[0085] See also Figure 3 As shown, the test data is made into a scatter plot, and the calculation formula between the grease amount and the test voltage value can be obtained by fitting the corresponding trend line, as follows:

[0086] y=0.0123x 2 -0.2998x+3.0877

[0087] Among them, y represents the voltage value and x represents the amount of grease.

[0088] It should be noted that the above fitting formula is only an example, and the specific coefficients may vary within a range.

[0089] In another optional solution of this embodiment, the oil state includes an oil level; and obtaining the oil level of the detected skin based on the electrical signal specifically includes:

[0090] The electrical signal is processed by A / D to obtain an electrical signal value, the electrical signal value is compared with a preset range, and the oil level of the detected skin is obtained according to the range to which the electrical signal belongs.

[0091] Specifically, the grease level includes dryness and lack of oil, water-oil balance, light grease, medium grease and heavy grease; the electrical signals corresponding to dryness and lack of oil, water-oil balance, light grease, medium grease and heavy grease decrease in sequence. For example, above 2.5v is dryness and lack of oil, 2.5-2.35 is water-oil balance, 2.35-1.9 is light grease, 1.9-1.5 is medium grease, and below 1.5v is heavy grease.

[0092] It should be noted that the above range levels are only for setting. In specific implementation, more oil grades can be divided as needed, and the range can be adjusted as needed. This embodiment does not limit this.

[0093] Specifically, controlling the reception of infrared signals reflected by the skin and converting them into electrical signals includes:

[0094] The infrared signal reflected by the skin is received and detected, and converted into a current signal; the current signal is converted into a voltage signal through a voltage-dividing resistor.

[0095] Further, as described in the principle, after the current signal is converted into a voltage signal through a voltage divider resistor, the method further includes:

[0096] amplifying the voltage signal;

[0097] It is determined whether the voltage signal after the amplification process reaches a preset value. If so, S103 is executed; if not, a prompt is given.

[0098] Specifically, if the voltage signal after amplification is smaller than a preset value, it means that the detection terminal is not in close contact with the skin, and the user needs to be prompted to place the detection terminal close to the skin.

[0099] The present invention performs skin oil detection based on the principle of skin absorption and reflection of infrared signals (the more oil there is on the skin surface, the more infrared rays are absorbed, the less infrared rays are reflected, the weaker the light received by the infrared receiver, and the smaller the corresponding electrical signal). The detection speed is fast and the cost is low (the main components only require an infrared transmitter and an infrared receiver). The oil amount and oil level detected by the present invention have experimental basis. Therefore, the detection result is accurate and can reflect the real state of the skin, and then give corresponding improvements such as cleaning suggestions, so that users can clean their faces accurately and efficiently.

[0100] Embodiment 2

[0101] See also Figures 4 to 6 As shown, a skin oil detection instrument based on infrared technology includes:

[0102] The detection terminal 101 includes a conductive transmitting terminal 1011 and a receiving terminal 1012 which are in contact with the detection skin respectively;

[0103] The infrared module 102 is arranged inside the skin oil detection instrument, and includes an infrared transmitter 1021 and an infrared receiver 1022; the infrared transmitter 1021 is used to transmit infrared signals to the detection skin; the infrared receiver 1022 is used to receive the infrared signals reflected by the detection skin and convert them into electrical signals;

[0104] The control module 103 includes an infrared control unit and a data processing unit; the infrared control unit is used to control the on / off of the infrared transmitter 1021 and the infrared receiver 1022; the data processing unit is used to receive the electrical signal sent by the infrared receiver 1022.

[0105] In this embodiment, the control module 103 includes a control chip such as a single chip microcomputer or an MCU. The control module 103 is arranged on a main circuit board.

[0106] In an optional scheme of this embodiment, the data processing unit is also used to amplify the electrical signal and determine whether the amplified electrical signal reaches a preset value. If it does, the electrical signal value is obtained through A / D processing, and the oil status of the detected skin is obtained based on the electrical signal value.

[0107] In this solution, the detection of the oily state of the skin based on the value of the electrical signal is implemented in a skin oil detection instrument. For details, please refer to the implementation method of the first embodiment.

[0108] Specifically, the oil state includes the amount of oil; and acquiring and detecting the amount of oil on the skin based on the electrical signal specifically includes:

[0109] The electrical signal is processed by A / D to obtain an electrical signal value, and the amount of oil on the detected skin is obtained based on a quadratic equation of the electrical signal value; the electrical signal value is negatively correlated with the amount of oil.

[0110] or,

[0111] The oil state includes the oil level; obtaining the oil level of the detected skin based on the electrical signal specifically includes:

[0112] The electrical signal is processed by A / D to obtain an electrical signal value, the electrical signal value is compared with a preset range, and the oil level of the detected skin is obtained according to the range to which the electrical signal belongs.

[0113] Specifically, the grease level includes dryness and lack of oil, water-oil balance, light grease, medium grease and heavy grease; the electrical signals corresponding to dryness and lack of oil, water-oil balance, light grease, medium grease and heavy grease decrease in sequence. For example, above 2.5v is dryness and lack of oil, 2.5-2.35 is water-oil balance, 2.35-1.9 is light grease, 1.9-1.5 is medium grease, and below 1.5v is heavy grease.

[0114] In another optional scheme of this embodiment, the data processing unit is also used to amplify the electrical signal and determine whether the amplified electrical signal reaches a preset value. If it is greater, the electrical signal value is obtained through A / D processing and the electrical signal value is sent to an external terminal device.

[0115] That is, the skin oil detection instrument is responsible for collecting the electrical signal value and sending the electrical signal value to the external terminal device, and the oil state of the skin is detected based on the electrical signal value through the external terminal device.

[0116] In this embodiment, the skin oil detection instrument based on infrared technology further includes: an infrared focusing lens 104 arranged between the detection terminal 101 and the infrared module 102 ; the infrared signal emitted by the infrared transmitter 1021 is focused by the infrared focusing lens 104 .

[0117] An infrared focusing lens 104 is arranged between the detection terminal 101 and the infrared module 102, so that the divergent infrared light emitted by the infrared transmitter 1021 can be focused through the infrared focusing lens 104, so that more infrared light can be focused on the skin, which can make the detected electrical signal value more obvious and improve the accuracy of the detection result.

[0118] In this embodiment, the skin oil detection instrument based on infrared technology further includes a switch module 105. Specifically, the switch module 105 is arranged on the housing of the skin oil detection instrument, and includes a key switch or a touch switch. The switch module 105 is connected to the control module 103, and is used to start the skin oil detection instrument and / or trigger the infrared module 102.

[0119] Specifically, the switch module 105 can be pressed once to turn on and trigger the infrared module 102 (start infrared reception and transmission), or it can be pressed once to turn on and pressed again to trigger the infrared module 102. The specific settings can be made as needed, and this embodiment does not limit it.

[0120] In this embodiment, the skin oil detection instrument based on infrared technology further includes: a communication module (not shown in the figure); the control module 103 is connected to the external terminal device through the communication module.

[0121] Specifically, for a solution to implement skin oil state detection in a skin oil detection instrument, the detection result can be sent to an external terminal device for display, and for a solution to implement skin oil state detection in an external terminal device, the electrical signal value can be sent to the external terminal device. In addition, the communication module can include wired or wireless (such as a WIFI module / Bluetooth module, etc.), which is specifically set according to needs, and this embodiment does not limit it.

[0122] In this embodiment, the skin oil detection instrument based on infrared technology further includes: a sound prompt module (not shown in the figure); the sound prompt module is connected to the control module 103 to perform voice prompts.

[0123] Specifically, it is possible to prompt whether the detection terminal 101 is in contact with the skin, and to prompt the detection result.

[0124] In this embodiment, the infrared-based skin oil detection instrument further includes a power supply module 106, which is connected to the control module 103 to supply power. The power supply module may include a rechargeable lithium battery, which is easy to use.

[0125] In this embodiment, the skin oil detection instrument based on infrared technology also includes: an upper cover 107, a detection head 108, a fixing seat 109 and a lower shell 110 arranged in sequence; the transmitting terminal 1011 and the receiving terminal 1012 are relatively arranged on the detection head 108; a light source board provided with an infrared transmitter 1021 and an infrared receiver 1022 and a main circuit board provided with a control module 103 are arranged in the lower shell 110 or the fixing seat 109.

[0126] The infrared focusing lens 104 and a lens fixing member 111 are also arranged between the detection head 108 and the light source board. The lens fixing member 111 is used to fix the infrared focusing lens 104 .

[0127] The infrared-based skin oil detection instrument further comprises an indicator light 112 and a light guide column 113. The light guide column 113 can make the light of the indicator light 112 softer and the appearance of the detection pen more beautiful. The indicator light 112 is arranged on the main circuit board, and the light guide column 113 is arranged above the indicator light 112.

[0128] Specifically, the transmitting terminal 1011 and the receiving terminal 1012 are arranged on the detection head 108 .

[0129] Specifically, the transmitting terminal 1011 and the receiving terminal 1012 can be plastic electroplated parts or metal parts, as long as they can conduct electricity. In order to make the skin oil detection instrument based on infrared technology more portable, the transmitting terminal 1011 and the receiving terminal 1012 of this embodiment are made of plastic electroplated parts.

[0130] The detection head 108 and the fixing seat 109 are arranged in the upper cover 107; the upper cover 107 is connected with the lower shell 110 to form a whole. The upper cover 107 is used to prevent dust from entering the detection head 108 and protect the skin oil detection instrument based on infrared technology. When in use, the upper cover 107 can be removed for detection.

[0131] It should be noted that after the power is turned on, the transmitting terminal 1011 sends a signal, and the receiving terminal 1012 receives the signal, forming a loop with the air. Since the air is not conductive in most cases (occasionally it has very weak conductivity), the electrical signal received by the control module 103 is 0 or a small value. After contacting the skin, the receiving terminal 1012 receives the signal sent by the transmitting terminal 1011 (i.e., forming a loop with the human skin, see Figure 7 As shown) and outputs a signal to the control module 103. Since the skin is conductive, after contacting the skin, the control module 103 can collect a sudden change in a large electrical signal value to determine whether the detection terminal 101 contacts the skin.

[0132] Embodiment 3

[0133] See also Figure 8 As shown, a skin oil detection system based on infrared technology includes the skin oil detection instrument 10 based on infrared technology; and also includes an external terminal device 20; the external terminal device 20 is connected to the skin oil detection instrument 10 based on infrared technology, and is used to receive and detect the oil status of the skin and provide prompts.

[0134] In this embodiment, the oil state of the skin is detected based on the electrical signal value in the skin oil detection instrument 10, and the skin oil detection instrument 10 sends the detected oil state to the external terminal device 20 for display or voice prompt.

[0135] In this embodiment, the external terminal device 20 includes a mobile phone, IPAD, computer or beauty instrument, etc., and the corresponding APP is installed on the mobile phone, IPAD, computer or beauty instrument. The user sends a detection instruction to the skin oil detection instrument 10 through the APP, and at the same time receives the oil status sent by the skin oil detection instrument 10 and displays the results and information prompts on the APP.

[0136] Specifically, the external terminal device 20 communicates with the skin oil detection instrument 10 through a communication module.

[0137] Embodiment 4

[0138] See also Figure 8As shown, a skin oil detection system based on infrared technology includes the skin oil detection instrument 10 based on infrared technology; and also includes an external terminal device 20; the external terminal device 20 is connected to the skin oil detection instrument 10 based on infrared technology, and is used to receive an electrical signal value, and obtain the oil status of the detected skin based on the received electrical signal value and give a prompt.

[0139] In this embodiment, the detection of the oily state of the skin based on the electrical signal value is implemented in the external terminal device 20 , and the skin oil detection instrument 10 sends the detected electrical signal value to the external terminal device 20 .

[0140] In this embodiment, the external terminal device 20 includes a mobile phone, IPAD, computer or beauty instrument, etc., and the mobile phone, IPAD, computer or beauty instrument is installed with a corresponding APP. The user sends a detection instruction to the skin oil detection instrument 10 through the APP, and at the same time receives the electrical signal value sent by the skin oil detection instrument 10, and obtains the skin oil status after processing by the APP, and displays the result and information prompts, etc.

[0141] Specifically, the external terminal device 20 communicates with the skin oil detection instrument 10 through a communication module.

[0142] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A skin oil detection method based on infrared technology, characterized in that: include: S101, controlling the emission of infrared signals to the detected skin; S102, controlling the receiving and detecting of the infrared signal reflected by the skin and converting it into an electrical signal; S103, acquiring and detecting the oily state of the skin based on the electrical signal.

2. The skin oil detection method based on infrared technology according to claim 1, characterized in that: The oil state includes the oil amount; acquiring and detecting the oil amount of the skin based on the electrical signal specifically includes: The electrical signal is processed by A / D to obtain an electrical signal value, and the amount of oil on the detected skin is obtained based on a quadratic equation of the electrical signal value; the electrical signal value is negatively correlated with the amount of oil.

3. The skin oil detection method based on infrared technology according to claim 1, characterized in that: The grease state includes grease grade; Acquiring and detecting the oil level of the skin based on the electrical signal specifically includes: The electrical signal is processed by A / D to obtain an electrical signal value, the electrical signal value is compared with a preset range, and the oil level of the detected skin is obtained according to the range to which the electrical signal belongs.

4. The skin oil detection method based on infrared technology according to claim 3 is characterized in that: The grease levels include dryness and lack of oil, water-oil balance, light grease, medium grease and heavy grease; the electrical signals corresponding to dryness and lack of oil, water-oil balance, light grease, medium grease and heavy grease decrease in sequence.

5. The skin oil detection method based on infrared technology according to claim 1, characterized in that: Control receiving and detecting the infrared signal reflected by the skin and converting it into an electrical signal, including: The infrared signal reflected by the skin is received and detected, and converted into a current signal; the current signal is converted into a voltage signal through a voltage-dividing resistor.

6. The skin oil detection method based on infrared technology according to claim 5, characterized in that: After the current signal is converted into a voltage signal through a voltage dividing resistor, the method further includes: amplifying the voltage signal; It is determined whether the voltage signal after the amplification process reaches a preset value. If so, S103 is executed.

7. A skin oil detection instrument based on infrared technology, characterized in that: include: The detection terminal comprises a conductive transmitting terminal and a receiving terminal respectively in contact with the detection skin; The infrared module is arranged inside the skin oil detection instrument, and includes an infrared transmitter and an infrared receiver; the infrared transmitter is used to transmit infrared signals to the detection skin; the infrared receiver is used to receive the infrared signals reflected by the detection skin and convert them into electrical signals; A control module, including an infrared control unit and a data processing unit; The infrared control unit is used to control the on / off of the infrared transmitter and the infrared receiver; the data processing unit is used to receive the electrical signal sent by the infrared receiver.

8. The skin oil detection instrument based on infrared technology according to claim 7, characterized in that: The data processing unit is also used to amplify the electrical signal and determine whether the amplified electrical signal reaches a preset value. If it does, the electrical signal value is obtained through A / D processing, and the oil state of the detected skin is obtained based on the electrical signal value.

9. The skin oil detection instrument based on infrared technology according to claim 7, characterized in that: The data processing unit is also used to amplify the electrical signal and determine whether the amplified electrical signal reaches a preset value. If it does, obtain the electrical signal value through A / D processing and send the electrical signal value to an external terminal device.

10. The skin oil detection instrument based on infrared technology according to claim 7, characterized in that: Also includes: An infrared focusing lens disposed between the detection terminal and the infrared module; The infrared signal emitted by the infrared transmitter is focused by the infrared focusing lens.

11. The skin oil detection instrument based on infrared technology according to claim 7, characterized in that: The skin oil detection instrument based on infrared technology also includes a switch module; the switch module is connected to the control module and is used to start the skin oil detection instrument and / or trigger the infrared module.

12. The skin oil detection instrument based on infrared technology according to claim 7, characterized in that: Also includes: Communication module; The control module is connected to an external terminal device through the communication module.

13. The skin oil detection instrument based on infrared technology according to claim 7, characterized in that: Also includes: Voice prompt module; the voice prompt module is connected to the control module to provide voice prompts.

14. A skin oil detection system based on infrared technology, characterized in that: It comprises the skin oil detection instrument based on infrared technology as described in claim 8; and also comprises an external terminal device; the external terminal device is connected to the skin oil detection instrument based on infrared technology, and is used to receive and detect the oil status of the skin and give prompts.

15. A skin oil detection system based on infrared technology, characterized in that: It includes the skin oil detection instrument based on infrared technology as described in claim 9; and also includes an external terminal device; the external terminal device is connected to the skin oil detection instrument based on infrared technology, and is used to receive the electrical signal value, and obtain the oil status of the detected skin based on the received electrical signal value and give a prompt.

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