Beauty instrument

Abstract

The utility model provides a beauty instrument which comprises a working head, the working head is provided with a working face which is attached to the skin when the beauty instrument works, a through hole penetrating through the working face is formed in the working face, a cavity is formed in the working head, the through hole is communicated with the cavity, an excitation device is arranged in the cavity, and the excitation device is connected with the working face. The excitation device and the through hole are correspondingly arranged, the excitation device is used for emitting energy waves, and a light hole is formed in the working face; the optical flow sensor is arranged behind the light hole and is used for detecting light penetrating through the light hole so as to detect the position information of the working head and the distance information between the working head and the skin; and the main control circuit board is electrically connected with the excitation device and the optical flow sensor and is used for receiving the position information and the distance information and controlling the excitation device to be turned on or turned off. The anti-scald cosmetic instrument can prevent scalds in the working process of the cosmetic instrument.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty instruments, in particular to a beauty instrument. Background Art

[0002] Home ultrasonic beauty devices mainly use the ultrasonic thermal effect to act on the inside of human skin. The effective depth of ultrasonic energy of beauty devices is in the epidermis, dermis and fascia of human skin. During use, if it works in the same position for a long time, it will burn the skin. In the prior art, burns are detected by image detection. This method determines the degree of skin burns by taking pictures of the targeted skin used by the ultrasonic beauty device. However, due to the different depths of use of beauty devices, most burns will not appear on the surface of the skin. When the burns can be observed through the skin surface, the degree of burns may have been deep. This type of detection method cannot prevent burns. Utility Model Content

[0003] The utility model provides a beauty instrument, which is used to solve the defect in the prior art that the beauty instrument cannot prevent scalding when it is used, and achieves the effect of preventing scalding when the beauty instrument is used.

[0004] The utility model provides a beauty instrument, comprising:

[0005] A working head, wherein the working head has a working surface that is in contact with the skin when the beauty instrument is working, the working surface is provided with a through hole that penetrates the working surface, the working head has a cavity inside, the through hole is connected to the cavity, an excitation device is provided in the cavity, the excitation device is provided corresponding to the through hole, the excitation device is used to emit energy waves, and the working surface is also provided with a light-transmitting hole;

[0006] An optical flow sensor, which is arranged behind the light-transmitting hole and is used to detect the light transmitted through the light-transmitting hole to detect the position information of the working head and the distance information between the working head and the skin;

[0007] A main control circuit board is electrically connected to the excitation device and the optical flow sensor, and is used to receive the position information and the distance information, and control the excitation device to be turned on or off.

[0008] According to a beauty instrument provided by the utility model, a supporting device is arranged inside the working head, and the supporting device is used to fix the excitation device so that the position of the energy wave emitting head of the excitation device corresponds to the position of the through hole.

[0009] According to a beauty instrument provided by the utility model, the beauty instrument also includes a beauty instrument body, the beauty instrument body includes a hand-held part and a functional part connected to the hand-held part; the working head includes a first end and a second end, the working surface is arranged at the first end, the second end is detachably connected to the functional part, and the first end is arranged to gradually expand toward the second end.

[0010] According to a beauty instrument provided by the utility model, the second end is open, and the working head further includes an end cover, and the end cover covers the open end.

[0011] According to a beauty instrument provided by the utility model, a wiring hole is provided on the end cover.

[0012] A beauty instrument provided by the utility model also includes:

[0013] A display screen is electrically connected to the main control circuit board and is used to display control information of the main control circuit board.

[0014] According to a beauty instrument provided by the utility model, the display screen is arranged on the functional part.

[0015] According to a beauty instrument provided by the utility model, the display screen is arranged on a surface of the functional part opposite to the working surface.

[0016] According to a beauty instrument provided by the utility model, an operation button is arranged on the handheld part, and the operation button is electrically connected to the main control circuit board.

[0017] According to a beauty instrument provided by the utility model, the main control circuit board is arranged inside the handheld part.

[0018] The utility model provides a beauty instrument, including a working head, wherein the working head has a working surface that fits with the skin when the beauty instrument is working, and a through hole penetrating the working surface is arranged on the working surface, the through hole is connected with a cavity in the working head, and an excitation device arranged in the cavity can emit energy waves to achieve the effect of beautifying the skin. By arranging a light-transmitting hole on the working surface of the working head that fits with the skin when the beauty instrument is working, and arranging an optical flow sensor behind the light-transmitting hole, the optical flow sensor can detect the position information of the working head and the distance information from the skin, the optical flow sensor and the excitation device are respectively electrically connected to a main control circuit board, and the main control circuit board is used for receiving the position information of the working head and the distance information from the skin detected by the optical flow sensor, and controlling the excitation device to be turned on or off, so that the working head can fit with the skin and remain motionless for a long time, which may cause the temperature of part of the skin to be too high and cause burns, and the excitation device can be turned off, thereby achieving prevention of burns during the operation of the beauty instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the beauty instrument provided by the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the working head of the beauty instrument provided by the utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the working head of the beauty instrument provided by the utility model. Figure 2 ;

[0023] Figure 4 It is a schematic diagram for explaining the displacement coordinate system in the process of preventing scalding when the beauty instrument provided by the utility model is working;

[0024] Figure 5 This is a temperature-time relationship diagram during energy output obtained through a working experiment test of the beauty instrument provided by the utility model.

[0025] Reference numerals:

[0026] 100: working head; 110: working surface; 111: through hole; 112: light-transmitting hole; 120: supporting device; 130: first end; 140: second end; 150: end cover; 151: wiring hole; 200: excitation device; 300: optical flow sensor; 400: beauty instrument body; 410: handheld part; 411: operation button; 420: functional part; 500: display screen. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Combine the following Figure 1-Figure 3 Describe the beauty instrument of the utility model, such as Figure 1As shown, the beauty instrument provided by the utility model includes a working head 100, and the working head has a working surface 110 that fits with the skin when the beauty instrument is working. The working head 100 has a cavity, such as Figure 2 As shown, a through hole 111 penetrating the working surface 110 is provided on the working surface 110, and the through hole 111 is connected to the cavity. An excitation device 200 is provided in the cavity, and the excitation device 200 is arranged corresponding to the through hole 111, so that the energy wave emitted by the excitation device 200 can reach the target skin of the beauty instrument through the through hole 111. A light-transmitting hole 112 is provided on the working surface 110, and an optical flow sensor 300 is provided behind the light-transmitting hole 112. The optical flow sensor 300 can detect the light transmitted through the light-transmitting hole 112 to detect the position information of the working head 100 and the distance information between the working head 100 and the skin. The optical flow sensor 300 can adopt an existing optical sensor that can detect displacement and distance. The beauty instrument provided by the utility model also includes a main control circuit board, which is electrically connected to the excitation device 200 and the optical flow sensor 300 respectively, and is used to receive the position information and distance information detected by the optical flow sensor 300, and is also used to control the excitation device 200 to be turned on or off.

[0029] The beauty instrument provided by the utility model can shut down the excitation device when the working head is in contact with the skin and remains motionless for a long time, which may cause the temperature of part of the skin to be too high and cause burns, thereby preventing burns.

[0030] Furthermore, if Figure 2 As shown, a support device 120 is provided in the working head 100, and the support device 120 is used to fix the excitation device 200, so that the position of the energy wave emission head of the excitation device 200 corresponds to the position of the through hole 111, so that the energy wave emitted by the excitation device 200 can fully reach the target skin through the through hole 111. The energy wave emitted by the excitation device 200 can be ultrasonic wave, laser wave, etc.

[0031] Furthermore, if Figure 1 As shown, the beauty instrument provided by the utility model includes a beauty instrument body 400, and the beauty instrument body 400 includes a handheld portion 410 and a functional portion 420 connected to the handheld portion 410, and the handheld portion 410 and the functional portion 420 can be integrally formed. The working head 100 includes a first end 130 and a second end 140, and the working surface 110 is arranged at the first end 130, and the second end 140 is detachably connected to the functional portion 420, so that when the excitation device 200 in the working head 100 fails, it can be easily repaired. The first end 130 is gradually expanded toward the second end 140, which can not only be beautiful in shape, but also can expand the connection surface between the working head 100 and the beauty instrument body 400, so that the connection is more secure.

[0032] like Figure 2As shown, in the beauty instrument provided by the utility model, the second end 140 is open, and the working head 100 also includes an end cover 150, which covers the opening of the second end 140. The end cover 150 is provided with a wiring hole, so that the connecting cables entering the working head 100 (such as the wires for powering the excitation device 200, the cables connecting the excitation device 200 and the main control circuit board, etc.) can be arranged through the wiring hole, so as to prevent the internal wiring of the beauty instrument from being messy and inconvenient to disassemble and repair the beauty instrument.

[0033] like Figure 1 As shown, the beauty instrument provided by the utility model further includes a display screen 500, which is electrically connected to the main control circuit board and is used to display control information of the main control circuit board. The control information of the main control circuit board may include control operations performed on the excitation device 200 based on the position information and distance information detected by the optical flow sensor 300, and may also include alarm information issued based on the position information and distance information detected by the optical flow sensor 300.

[0034] When using the beauty instrument provided by the present invention, the user holds the handheld portion 410 and places the working surface 110 on the working head 100 close to the skin. In order to facilitate the user to view the information displayed on the display screen 500, in the beauty instrument provided by the present invention, the display screen 500 is arranged on the functional portion 420. More specifically, the display screen 500 is arranged on the surface of the functional portion 420 opposite to the working surface 110. In this way, when the user uses the beauty instrument provided by the present invention, the working surface 110 is in close contact with the skin, and the surface of the functional portion 420 opposite to the working surface 110 can be more conveniently seen by the user, so that the user can view the information displayed on the display screen 500 more conveniently and quickly.

[0035] Furthermore, if Figure 1 As shown, the beauty instrument provided by the present invention further includes an operation button 411, which is arranged on the handheld portion 410, so that the user can operate the operation button 411 when holding the beauty instrument provided by the present invention. The operation button 411 is electrically connected to the main control circuit board. Through the operation information corresponding to the operation button 411, the main control circuit board can determine different control instructions to control the excitation device 200, such as controlling the excitation device 200 to turn on or off, increase or decrease the power, etc.

[0036] Furthermore, the main control circuit board is arranged inside the handheld part, and the main control circuit board can be in a long strip shape, so as to avoid an excessively long distance between the main control circuit board and the operation button 411, the excitation device 200, and the optical flow sensor 300, thereby facilitating the internal layout of the beauty instrument.

[0037] The following is an explanation of the method flow for preventing burns when the beauty instrument provided by the utility model is working. The method can be implemented by the controller in the main control circuit board of the beauty instrument provided by the utility model. In one possible implementation, the main control circuit board can directly determine whether the working head stays in the same position for too long based on whether the distance information detected by the working head 100 is less than the preset distance and whether the position information remains unchanged. When the distance information is less than the preset distance and the position information remains unchanged for a certain period of time, the excitation device 200 is controlled to stop working. However, the energy waves emitted by the excitation device 200 are effective within a certain range, and the movement of the working head 100 within a certain range will also cause excessive energy to the same piece of targeted skin, posing a risk of burns. Based on this, a scald prevention control method is provided, which may include the steps of:

[0038] S110, obtaining location information;

[0039] S120. When it is determined based on the position information that the displacement of the working head within a preset time period is less than a preset value, the excitation device is controlled to be turned off.

[0040] In the above-mentioned anti-scalding control method, when the displacement of the working head is less than the preset value within the preset time, the control excitation device is turned off. Considering the hand shake, the sensitivity of the sensor, and the communication speed between the sensor and the controller, after testing, when the distance movement range is less than 10mm, it can be determined that the beauty instrument is in a stationary state, so the preset value can be set to 10mm.

[0041] Specifically, determining that the displacement of the working head within a preset time period is less than a preset value based on the position information includes:

[0042] Collect n data frames within a preset time, each data frame corresponds to a position information;

[0043] Obtaining the displacements of each single frame corresponding to n data frames, where each single frame displacement is the displacement of the mth data frame relative to the m-1th data frame within a preset time length;

[0044] Obtain the sum of the displacements of each single frame to obtain the displacement of the working head within a preset time length;

[0045] The displacement amount is compared with a preset value to determine whether the displacement amount is smaller than the preset value.

[0046] like Figure 4 As shown in the figure, the coordinates of the previous frame are taken as the origin of the coordinates, the right of the optical flow sensor target surface is the positive direction of the X axis, and the upward direction is the positive direction of the Y axis. After receiving the X and Y movement count values ​​detected by the optical flow sensor relative to the previous frame position, the movement count values ​​of this frame are combined to calculate the movement distance:

[0047]

[0048] Direction of movement:

[0049]

[0050] Then the single frame displacement is:

[0051] The sum of k single-frame displacements can be expressed as:

[0052]

[0053] Furthermore, in the anti-scalding control method, a warning duration can also be set. The warning duration is less than the preset duration mentioned above. When the displacement within the warning duration is less than the preset value, an alarm is first issued until the displacement is less than the preset value for a preset duration, and then the control excitation device stops working. After actual experimental tests, the relationship between temperature and time during energy output is as follows: Figure 5 As shown, it can be seen that the temperature rises from 30 degrees Celsius to about 45 degrees Celsius within 20 seconds, and the temperature rise speed is fast, so the warning time can be set to 20 seconds and the preset time can be set to 25 seconds.

[0054] For example, assuming that the controller collects data frames at a frequency of 30fps, a total of 600 data frames are received within the warning duration, and a total of 750 data frames are received within the preset duration. By comprehensively calculating the displacement of 600 / 750 single frames, the total displacement within 20s / 25s can be calculated:

[0055]

[0056]

[0057] Furthermore, the scald prevention control method further includes:

[0058] When it is determined based on the distance information that the distance between the working head and the target skin is greater than a preset distance, an alarm message is issued, and the alarm message is used to indicate that a dry run has occurred in the beauty instrument.

[0059] The SQUAL (Surface Quality) returned by the optical flow sensor can be used as distance information. When the distance between the excitation device and the target skin (such as the face) is greater than the preset distance (the preset distance can also be set to 10mm), the value of the SQUAL parameter returned by the optical flow sensor is 0, indicating that there is no target surface at this time, and the energy emitted by the excitation device has no effect or hits the air. This phenomenon is called a blank hit. When a blank hit occurs, an alarm message is issued, and the alarm message can last for a certain period of time. When the blank hit phenomenon disappears, the alarm is canceled. If the alarm message lasts for the preset maximum alarm duration (such as 10s), the excitation device is controlled to stop working and stop energy output.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A beauty instrument, characterized in that: The beauty instrument comprises: A working head, wherein the working head has a working surface that is in contact with the skin when the beauty instrument is working, the working surface is provided with a through hole that penetrates the working surface, the working head has a cavity inside, the through hole is connected to the cavity, an excitation device is provided in the cavity, the excitation device is provided corresponding to the through hole, the excitation device is used to emit energy waves, and the working surface is also provided with a light-transmitting hole; An optical flow sensor, which is arranged behind the light-transmitting hole and is used to detect the light transmitted through the light-transmitting hole to detect the position information of the working head and the distance information between the working head and the skin; A main control circuit board is electrically connected to the excitation device and the optical flow sensor, and is used to receive the position information and the distance information, and control the excitation device to be turned on or off.

2. The beauty instrument according to claim 1, characterized in that: A supporting device is arranged inside the working head, and the supporting device is used to fix the excitation device so that the position of the energy wave emitting head of the excitation device corresponds to the position of the through hole.

3. The beauty instrument according to claim 1, characterized in that: The beauty instrument also includes a beauty instrument body, which includes a hand-held part and a functional part connected to the hand-held part; the working head includes a first end and a second end, the working surface is arranged at the first end, the second end is detachably connected to the functional part, and the first end is arranged to gradually expand toward the second end.

4. The beauty instrument according to claim 3, characterized in that: The second end is open, and the working head further comprises an end cover, which covers the open end.

5. The beauty instrument according to claim 4, characterized in that: The end cover is provided with a wiring hole.

6. The beauty instrument according to claim 3, characterized in that: Also includes: A display screen is electrically connected to the main control circuit board and is used to display control information of the main control circuit board.

7. The beauty instrument according to claim 6, characterized in that: The display screen is arranged on the functional part.

8. The beauty instrument according to claim 6, characterized in that: The display screen is arranged on a surface of the functional portion opposite to the working surface.

9. The beauty instrument according to claim 6, characterized in that: The handheld part is provided with an operation button, and the operation button is electrically connected to the main control circuit board.

10. The beauty instrument according to claim 9, characterized in that: The main control circuit board is arranged inside the handheld part.

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