Beauty instrument output waveform control device and control method

Abstract

The invention discloses a beauty instrument output waveform control device and method, and the device comprises a boost unit, a controller, a switch unit, and a waveform adjustment unit, the boost unit is used for boosting an input current containing an input frequency, and outputting a target voltage containing a square wave; the controller is used for generating a switching signal for controlling the switching unit and the waveform adjusting unit to be connected or disconnected according to the input frequency; one end of the switch unit is connected with the boosting unit, the other end of the switch unit is connected with the waveform adjusting unit, and the switch unit is used for controlling connection or disconnection of the boosting unit and the waveform adjusting unit according to the switch signal; and the waveform adjusting unit is used for adjusting the square wave into a sine wave when the boosting unit is communicated with the waveform adjusting unit. According to the invention, the square wave output by the boosting unit is adjusted into the sine wave through the waveform adjusting unit, and the body feeling and comfort of a user are improved.

Description

Technical Field

[0001] This invention relates to the field of beauty instrument technology, and in particular to a beauty instrument output waveform control device and control method. Background Technology

[0002] When using a beauty device, it's essential to select the appropriate function and frequency based on your skin type and needs, and pay attention to the correct usage method and frequency to avoid overuse that could damage your skin. However, existing beauty devices, regardless of the frequency, output a square wave waveform, resulting in poor user comfort and low user satisfaction. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a beauty instrument output waveform control device and control method, which realizes the adjustment of the square wave output by the boost unit into a sine wave through the waveform adjustment unit, thereby improving the user's sense of body and comfort.

[0004] The present invention provides a waveform control device for a beauty instrument, comprising a boost unit, a controller, a switching unit, and a waveform adjustment unit connected to the electrodes of the beauty instrument.

[0005] The boost unit is used to boost the input current containing the input frequency and output the target voltage containing a square wave.

[0006] A controller is configured to generate a switching signal based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit.

[0007] A switching unit, one end of which is connected to the boost unit and the other end of which is connected to the waveform adjustment unit, is used to control the connection or disconnection of the boost unit and the waveform adjustment unit according to the switching signal;

[0008] A waveform adjustment unit is used to adjust the square wave into a sine wave when the boost unit is connected to the waveform adjustment unit.

[0009] In one of the alternative technical solutions, the waveform adjustment unit includes a first resistor and at least one first capacitor, the first resistor and the first capacitor being connected in parallel with the boost unit and the electrode, respectively, and the first capacitor being connected with the switching unit.

[0010] In one of the alternative technical solutions, the waveform adjustment unit includes at least two first capacitors connected in parallel.

[0011] In one of the alternative technical solutions, the controller is further configured to:

[0012] The target capacitance is calculated based on the input frequency.

[0013] The switching signal is generated based on the target capacitance.

[0014] In one of the alternative technical solutions, calculating the target capacitance based on the input frequency includes:

[0015] The target capacitance is calculated using the following formula:

[0016] f = 1 / 2π × R × C,

[0017] Where f is the input frequency; R is the first resistor; and C is the first capacitor.

[0018] In one alternative technical solution, the switching unit includes at least one transistor and at least one relay.

[0019] The base of the transistor is connected to the controller, the collector of the transistor is connected to the first terminal of the relay, the emitter of the transistor is grounded, the second terminal of the relay is connected to the first capacitor, and the third terminal of the relay is connected in parallel with the boost unit and the electrode.

[0020] In one alternative technical solution, the boost unit includes a first field-effect transistor, a second field-effect transistor, and a transformer.

[0021] The gate of the first field-effect transistor is connected to the first PWM signal, the drain of the first field-effect transistor is connected to the primary winding of the transformer, and the source of the first field-effect transistor is grounded.

[0022] The gate of the second field-effect transistor is connected to the second PWM signal, the drain of the second field-effect transistor is connected to the primary of the transformer, the source of the second field-effect transistor is grounded, and the first PWM signal and the second PWM signal are complementary.

[0023] The secondary winding of the transformer is connected to the waveform adjustment unit, and the transformer is used to output the voltage according to the first PWM signal and the second PWM signal.

[0024] In one of the alternative technical solutions, the boost unit further includes a first filter circuit and a second filter circuit, wherein the first filter circuit is connected in parallel with the drain of the first field-effect transistor, and the second filter circuit is connected in parallel with the drain of the second field-effect transistor.

[0025] The technical solution of the present invention also provides a control method using the beauty instrument output waveform control device as described above, comprising:

[0026] Received input frequency;

[0027] A switching signal is generated based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit.

[0028] In one alternative technical solution, generating a switching signal based on the input frequency for controlling the connection or disconnection of the switching unit and the waveform adjustment unit includes:

[0029] The target capacitance is calculated based on the input frequency.

[0030] The switching signal is generated based on the target capacitance.

[0031] The above technical solution has the following beneficial effects: by setting up a boost unit, a controller, a switching unit and a waveform adjustment unit, the controller controls the connection or disconnection of the switching unit according to the input frequency, so that when the boost unit is connected to the waveform adjustment unit, the square wave output by the boost unit is adjusted to a sine wave, thereby improving the user's sense of body and comfort. Attached Figure Description

[0032] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of a beauty instrument output waveform control device according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the circuit structure of a beauty instrument output waveform control device according to an embodiment of the present invention;

[0035] Figure 3 This is a flowchart illustrating a method for controlling the output waveform of a beauty device according to an embodiment of the present invention. Detailed Implementation

[0036] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0037] It is readily understood that, based on the technical solution of this invention, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of the invention.

[0038] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0039] like Figure 1 As shown, an embodiment of the present invention provides a waveform control device for a beauty instrument, including a boost unit 10, a controller 20, a switching unit 30, and a waveform adjustment unit 40 connected to the electrodes of the beauty instrument.

[0040] The boost unit 10 is used to boost the input current containing the input frequency and output a target voltage containing a square wave.

[0041] Controller 20 is used to generate a switching signal based on the input frequency to control the connection or disconnection of switching unit 30 and waveform adjustment unit 40;

[0042] A switching unit 30 is provided, with one end connected to the boost unit 10 and the other end connected to the waveform adjustment unit 40. It is used to control the connection or disconnection of the boost unit 10 and the waveform adjustment unit 40 according to the switching signal.

[0043] The waveform adjustment unit 40 is used to adjust the square wave into a sine wave when the boost unit 10 is connected to the waveform adjustment unit 40.

[0044] The beauty instrument output waveform control device provided by this invention is used to control the output waveform of the beauty instrument, thereby improving the user's sense of touch and comfort.

[0045] The beauty instrument output waveform control device provided in this embodiment mainly includes a boost unit 10, a controller 20, a switch unit 30, and a waveform adjustment unit 40.

[0046] The input terminal of the boost unit 10 is connected to an input current containing the input frequency, which boosts the input current to the voltage required by the beauty device and outputs it to the switching unit 30. This voltage contains a square wave. The input frequency corresponds to the setting and massage mode of the beauty device. The input current can be output through an independent controller or a microcontroller, or it can be output using the controller 20 of this application.

[0047] The controller 20 is connected to the boost unit 10 and the switching unit 30 respectively. The controller 20 generates a switching signal according to the input frequency and outputs the switching signal to the switching unit 30 to control the connection or disconnection between the switching unit 30 and the waveform adjustment unit 40.

[0048] The switching unit 30 receives the switching signal output by the controller 20 and controls the boost unit 10 to connect or disconnect from the waveform adjustment unit 40. For example, when the switching signal output by the controller 20 is high, the switching unit 30 controls the boost unit 10 to connect with the waveform adjustment unit 40; when the switching signal output by the controller 20 is low, the switching unit 30 controls the boost unit 10 to disconnect from the waveform adjustment unit 40.

[0049] The waveform adjustment unit 40 is used to adjust the square wave output by the boost unit 10 into a sine wave when the boost unit 10 is connected to the waveform adjustment unit 40, and output it to the electrodes of the beauty device so that the beauty device can eliminate wrinkles, tighten skin, and shape the body, thereby improving the user's physical experience.

[0050] In this embodiment, by setting up a boost unit, a controller, a switching unit, and a waveform adjustment unit, the controller controls the connection or disconnection of the switching unit according to the input frequency, so that when the boost unit is connected to the waveform adjustment unit, the square wave output by the boost unit is adjusted to a sine wave, thereby realizing frequency-based control of the output waveform and improving user experience and comfort.

[0051] In one embodiment, such as Figure 2 As shown, the waveform adjustment unit 40 includes a first resistor R1 and at least one first capacitor. The first resistor R1 and the first capacitor are connected in parallel with the boost unit 10 and the electrode, respectively. The first capacitor is connected to the switching unit 30.

[0052] The waveform adjustment unit 40 includes a first resistor R1 and a first capacitor. The first resistor R1 and the first capacitor are connected in parallel between the boost unit 10 and the electrodes. The first resistor R1 is used to limit power and prevent excessive output power. The first capacitor is used to adjust the square wave output by the boost unit 10 into a sine wave. There is at least one first capacitor, and the number of first capacitors corresponds to the input frequency. When the beauty device has only one level and / or massage mode, that is, only one input frequency, the number of first capacitors is one. When the beauty device has more levels and / or massage modes, that is, multiple input frequencies, the number of first capacitors increases. Different capacitors are matched according to different frequencies to achieve the desired sine wave output, improving the user's sensation and comfort.

[0053] In one embodiment, such as Figure 2 As shown, the waveform adjustment unit 40 includes at least two first capacitors connected in parallel.

[0054] When there are at least two input frequencies, the number of first capacitors is at least two. These at least two first capacitors are connected in parallel to the output terminal of the boost unit 10 via the switching unit 30. Preferably, the number of first capacitors is three. Figure 2The capacitors C1, C2, and C3 shown are connected or disconnected between the switching unit 30 and the boost unit 10. For example, when the input frequency is 20kHz, the switching unit 30 controls capacitor C1 to be connected to the boost unit 10, while capacitors C2 and C3 are disconnected. The square wave output from the boost unit 10 is then conditioned into a sine wave by capacitor C1 and output to the electrodes of the beauty device. When the input frequency is 30kHz, the switching unit 30 controls capacitors C2 and C3 to be connected to the boost unit 10, while capacitor C1 is disconnected. The square wave output from the boost unit 10 is then conditioned into a sine wave by capacitors C2 and C3 and output to the electrodes of the beauty device. By matching different capacitors according to different frequencies, a sine wave of the required frequency can be output, improving the user's sensation and comfort. It should be noted that the combination of the first capacitors can also be in other ways, as long as the combination of the first capacitors meets the frequency requirements.

[0055] In one embodiment, the controller 20 is further configured to:

[0056] The target capacitance is calculated based on the input frequency;

[0057] A switching signal is generated based on the target capacitance.

[0058] The controller 20 can calculate the target capacitance based on the input frequency. This target capacitance is the capacitance value corresponding to the first capacitor. Based on the target capacitance, it generates a switching signal for the control switch unit 30, such as... Figure 2 As shown, when the target capacitance calculated by the controller 20 is the sum of capacitors C2 and C3, the controller 20 generates a switching signal that connects capacitors C2 and C3 to the output terminal of the boost unit 10 and disconnects capacitor C1 from the boost unit 10, and outputs it to the switching unit 30. Through the switching unit 30, capacitors C2 and C3 are connected to the output terminal of the boost unit 10 and capacitor C1 is disconnected from the boost unit 10, thereby achieving a more accurate matching of the input frequency with the capacitor, outputting a sine wave of the required frequency, and improving the user's sense of experience and comfort.

[0059] In one embodiment, to obtain the target capacitance more accurately, the step of calculating the target capacitance based on the input frequency includes:

[0060] The target capacitance is calculated using the following formula:

[0061] f = 1 / 2π × R × C,

[0062] Where f is the input frequency; R is the first resistor; and C is the first capacitor.

[0063] In one embodiment, the switching unit 30 includes at least one transistor and at least one relay.

[0064] The base of the transistor is connected to the controller 20, the collector of the transistor is connected to the first terminal of the relay, the emitter of the transistor is grounded, the second terminal of the relay is connected to the first capacitor, and the third terminal of the relay is connected in parallel with the boost unit 10 and the electrode.

[0065] The switching unit 30 includes at least one transistor and at least one relay. The number of transistors and relays corresponds to the number of first capacitors. Each group of transistors and relays corresponds to one first capacitor. When there are multiple transistors and relays, they are connected in parallel to control the connection of multiple first capacitors. In this embodiment, the preferred number of transistors and relays is three. Figure 2 The transistors Q1, Q2, Q3 and relays K1, K2, K3 are shown. For example, when the input frequency is 20kHz, the controller 20 outputs a high level to transistor Q1, turning it on; and outputs a low level to transistors Q2 and Q3, turning them off. This controls capacitor C1 to connect to the boost unit 10, while capacitors C2 and C3 are disconnected from the boost unit 10. The square wave output from the boost unit 10 is then regulated into a sine wave by capacitor C1 and output to the electrodes of the beauty device. When the input frequency is 3... At 0kHz, the controller 20 outputs a low level to transistor Q1, causing transistor Q1 to disconnect. It then outputs a high level to transistors Q2 and Q3, turning on transistors Q2 and Q3. This controls capacitors C2 and C3 to connect to the boost unit 10, while capacitor C1 disconnects from the boost unit 10. The square wave output by the boost unit 10 is then regulated into a sine wave by capacitors C2 and C3 and output to the electrodes of the beauty device. By matching different capacitors according to different frequencies, a sine wave of the required frequency can be output, improving the user's sense of touch and comfort.

[0066] In one embodiment, such as Figure 2 As shown, the boost unit 10 includes a first field-effect transistor G1, a second field-effect transistor G2, and a transformer T.

[0067] The gate of the first field-effect transistor G1 is connected to the first PWM signal, the drain of the first field-effect transistor G1 is connected to the primary winding of the transformer T, and the source of the first field-effect transistor G1 is grounded.

[0068] The gate of the second field-effect transistor G2 is connected to the second PWM signal, the drain of the second field-effect transistor G2 is connected to the primary of the transformer T, the source of the second field-effect transistor G2 is grounded, and the first PWM signal and the second PWM signal are complementary.

[0069] The secondary winding of transformer T is connected to waveform adjustment unit 40. Transformer T is used to output voltage according to the first PWM signal and the second PWM signal.

[0070] The boost unit 10 includes a first field-effect transistor G1, a second field-effect transistor G2, and a transformer T. The primary winding of the transformer T is connected to the first field-effect transistor G1 and the second field-effect transistor G2. The secondary winding of the transformer T is connected in parallel with a first resistor R1, a relay, and a first capacitor. The gates of the first field-effect transistor G1 and the second field-effect transistor G2 are respectively connected to a first PWM signal and a second PWM signal output by the microcontroller, which contain the input frequency. The first PWM signal and the second PWM signal are complementary, that is, when the first PWM signal is high, the second PWM signal is low, and vice versa. The first PWM signal and the second PWM signal control the on and off of the first field-effect transistor G1 and the second field-effect transistor G2. For example, when the first PWM signal is high and the second PWM signal is low, the first field-effect transistor G1 is turned on and the second field-effect transistor G2 is turned off, so that a changing current flows through the primary winding of the transformer T. The secondary winding of the transformer T amplifies and outputs a voltage containing a square wave.

[0071] In one embodiment, such as Figure 1 As shown, in order to filter out noise, the boost unit 10 also includes a first filter circuit 11 and a second filter circuit 12. The first filter circuit 11 is connected in parallel with the drain of the first field-effect transistor G1, and the second filter circuit 12 is connected in parallel with the drain of the second field-effect transistor G2.

[0072] In one embodiment, such as Figure 2 As shown, to facilitate the filtering of noise, the first filter circuit 11 includes a second resistor R2 and a second capacitor C4, and the second filter circuit 12 includes a third resistor R3 and a third capacitor C5.

[0073] One end of the second capacitor C4 is connected to the input voltage, the other end of the second capacitor C4 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected in parallel with the drain of the first field-effect transistor G1.

[0074] One end of the third capacitor C5 is connected to the input voltage, the other end of the third capacitor C5 is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected in parallel with the drain of the second field-effect transistor G2.

[0075] like Figure 3 As shown, Figure 3 A flowchart of a method for controlling the output waveform of a beauty device according to an embodiment of the present invention is provided, including:

[0076] Step S301: Receive input frequency;

[0077] Step S302: Generate a switching signal based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit.

[0078] Specifically, the beauty instrument output waveform control method provided in this embodiment is applied to the beauty instrument output waveform control device in the above-mentioned beauty instrument embodiment. When the user sets the level and massage mode of the beauty instrument, the controller executes step S301 to receive the input frequency and executes step S302 to generate a switch signal according to the input frequency and output it to the switch unit, controlling the connection or disconnection between the switch unit and the waveform adjustment unit. For example, when the output switch signal is high level, the switch unit controls the boost unit to connect with the waveform adjustment unit; when the output switch signal is low level, the switch unit controls the boost unit to disconnect with the waveform adjustment unit. When the boost unit is connected with the waveform adjustment unit, the waveform adjustment unit adjusts the square wave output by the boost unit into a sine wave and outputs it to the electrodes of the beauty instrument, so that the beauty instrument can eliminate wrinkles, tighten skin, and sculpt the body, improving the user's experience.

[0079] In this embodiment, upon receiving an input frequency, a switching signal is generated based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit. When the boost unit and the waveform adjustment unit are connected, the waveform adjustment unit adjusts the square wave output by the boost unit into a sine wave and outputs it to the electrodes of the beauty device, enabling the beauty device to achieve effects such as eliminating wrinkles, tightening skin, and shaping, thereby enhancing the user's physical experience.

[0080] In one embodiment, step S302 includes:

[0081] The target capacitance is calculated based on the input frequency;

[0082] A switching signal is generated based on the target capacitance.

[0083] Specifically, the controller can calculate the target capacitance based on the input frequency. This target capacitance is the capacitance value corresponding to the first capacitor. Based on the target capacitance, it generates a switching signal for the control switching unit, such as... Figure 2 As shown, when the target capacitance calculated by the controller is the sum of capacitors C2 and C3, the controller generates a switching signal that connects capacitors C2 and C3 to the output terminal of the boost unit and disconnects capacitor C1 from the boost unit. This signal is then output to the switching unit, which controls capacitors C2 and C3 to connect to the output terminal of the boost unit and capacitor C1 to disconnect from the boost unit. This achieves a more accurate matching of the input frequency with the capacitors, outputting a sine wave of the required frequency, thus improving the user's experience and comfort.

[0084] In one embodiment, to obtain the target capacitance more accurately, the step of calculating the target capacitance based on the input frequency includes:

[0085] The target capacitance is calculated using the following formula:

[0086] f = 1 / 2π × R × C,

[0087] Where f is the input frequency; R is the first resistor; and C is the first capacitor.

[0088] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waveform control device for a beauty instrument, characterized in that, It includes a boost unit, a controller, a switching unit, and a waveform adjustment unit that connects to the electrodes of the beauty device. The boost unit is used to boost the input current containing the input frequency and output the target voltage containing a square wave. A controller is configured to generate a switching signal based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit. A switching unit, one end of which is connected to the boost unit and the other end of which is connected to the waveform adjustment unit, is used to control the connection or disconnection of the boost unit and the waveform adjustment unit according to the switching signal; A waveform adjustment unit is used to adjust the square wave into a sine wave when the boost unit is connected to the waveform adjustment unit.

2. The beauty instrument output waveform control device as described in claim 1, characterized in that, The waveform adjustment unit includes a first resistor and at least one first capacitor. The first resistor and the first capacitor are connected in parallel with the boost unit and the electrode, respectively. The first capacitor is connected to the switching unit.

3. The beauty instrument output waveform control device as described in claim 2, characterized in that, The waveform adjustment unit includes at least two of the first capacitors connected in parallel.

4. The beauty instrument output waveform control device as described in claim 2 or 3, characterized in that, The controller is also used for: The target capacitance is calculated based on the input frequency. The switching signal is generated based on the target capacitance.

5. The beauty instrument output waveform control device as described in claim 4, characterized in that, The step of calculating the target capacitance based on the input frequency includes: The target capacitance is calculated using the following formula: f = 1 / 2π × R × C, Where f is the input frequency; R is the first resistor; and C is the first capacitor.

6. The beauty instrument output waveform control device as described in claim 4, characterized in that, The switching unit includes at least one transistor and at least one relay. The base of the transistor is connected to the controller, the collector of the transistor is connected to the first terminal of the relay, the emitter of the transistor is grounded, the second terminal of the relay is connected to the first capacitor, and the third terminal of the relay is connected in parallel with the boost unit and the electrode.

7. The beauty instrument output waveform control device as described in claim 1, characterized in that, The boost unit includes a first field-effect transistor, a second field-effect transistor, and a transformer. The gate of the first field-effect transistor is connected to the first PWM signal, the drain of the first field-effect transistor is connected to the primary winding of the transformer, and the source of the first field-effect transistor is grounded. The gate of the second field-effect transistor is connected to the second PWM signal, the drain of the second field-effect transistor is connected to the primary of the transformer, the source of the second field-effect transistor is grounded, and the first PWM signal and the second PWM signal are complementary. The secondary winding of the transformer is connected to the waveform adjustment unit, and the transformer is used to output the voltage according to the first PWM signal and the second PWM signal.

8. The beauty instrument output waveform control device as described in claim 7, characterized in that, The boost unit further includes a first filter circuit and a second filter circuit. The first filter circuit is connected in parallel with the drain of the first field-effect transistor, and the second filter circuit is connected in parallel with the drain of the second field-effect transistor.

9. A control method using the output waveform control device of a beauty instrument as described in any one of claims 1-8, characterized in that, include: Received input frequency; A switching signal is generated based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit.

10. The control method as described in claim 9, characterized in that, The step of generating a switching signal based on the input frequency to control the connection or disconnection of the switching unit and the waveform adjustment unit includes: The target capacitance is calculated based on the input frequency. The switching signal is generated based on the target capacitance.

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