Function multiplexing pulse signal output circuit and beauty instrument
By designing a pulse signal output circuit for functional reuse, pulse signals of different frequencies and waveforms are generated, solving the problems of poor frequency of the EMS function and corrosion of the import function in beauty devices. This achieves functional reuse and cost reduction of beauty devices, and improves beauty effects and user experience.
Patent Information
- Application Number
- CN202423247571.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing beauty devices' EMS functions cannot generate EMS signals at the optimal frequency, and their import functions are prone to electrochemical corrosion. Furthermore, the EMS and import functions are usually separate modules, resulting in high costs and poor beauty effects.
Design a functional multiplexing pulse signal output circuit. By combining a rectangular pulse signal generation module, a shaping module, and a function control module, pulse signals of different frequencies and waveforms can be generated, realizing the multiplexing of different functions in the same circuit, including input function and microcurrent function.
This enables efficient operation of different functions within the same circuit, reducing the cost of beauty devices and improving beauty effects and user experience.
Smart Images
Figure CN223843755U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of beauty instrument technology, specifically to a multifunctional pulse signal output circuit and a beauty instrument. Background Technology
[0002] Skincare product delivery and microcurrent functions are two core features of beauty devices. Currently, beauty devices on the market have the following shortcomings: 1) Handheld beauty devices on the market use transformers to generate the required EMS (Electrical Muscle Stimulation) signals when operating the microcurrent function, with a working frequency generally around 20kHz. Professional research shows that the optimal frequency for muscle stimulation is 1-5kHz; traditional circuit stimulation is less effective, resulting in poor skincare results. 2) The product delivery function of beauty devices is mainly used to effectively deliver nutrients or therapeutic ingredients to the deeper layers of the skin for better skincare effects. The common technology on the market is iontophoresis, which typically uses DC or DC pulse signals, while EMS uses AC pulses. Therefore, in existing technology, the industry usually uses separate modules for microcurrent and product delivery functions, leading to increased costs for beauty devices. Utility Model Content
[0003] In view of this, the present invention provides a pulse signal output circuit and beauty device with multiplexed functions to solve the problems of independent functional modules and high cost of beauty devices.
[0004] In a first aspect, this utility model provides a functionally multiplexed pulse signal output circuit, comprising:
[0005] A rectangular pulse signal generation module is used to generate rectangular pulse signals at a preset frequency.
[0006] A rectangular pulse signal shaping module, connected to the rectangular pulse signal generating module, is used to convert the rectangular pulse signal into a positive and negative symmetrical rectangular pulse signal of the preset frequency;
[0007] The first functional control module is connected to the rectangular pulse signal shaping module and is used to output positive and negative symmetrical rectangular pulse signals to the first metal electrode.
[0008] The second functional control module is connected to the rectangular pulse signal shaping module and is used to convert positive and negative symmetrical rectangular pulse signals into sinusoidal pulse signals of a preset frequency and output the sinusoidal pulse signals to the second metal electrode.
[0009] The control module is connected to the rectangular pulse signal generation module, the first function control module, and the second function control module. It is used to activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the first function control module according to the selected function mode and / or gear information to execute the import function, or to activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the second function control module to execute the micro-current function.
[0010] The functionally multiplexed pulse signal output circuit provided by this utility model, through a control module, activates a rectangular pulse signal generation module, a rectangular pulse signal shaping module, and a first functional control module according to the functional mode and / or gear information. The rectangular pulse signal generation module generates a rectangular pulse signal of a preset frequency, the rectangular pulse signal shaping module converts the rectangular pulse signal into a positive and negative symmetrical rectangular pulse signal, and the first functional control module outputs the positive and negative symmetrical rectangular pulse signal to the corresponding metal electrode to perform the input function. Alternatively, the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the second functional control module can be activated. The rectangular pulse signal generation module generates a rectangular pulse signal of a preset frequency, which is then converted into a positive and negative symmetrical rectangular pulse signal by the rectangular pulse signal shaping module. The second functional control module converts the positive and negative symmetrical rectangular pulse signal into a sinusoidal pulse signal and outputs it to the corresponding metal electrode to perform the microcurrent function. This invention controls the conduction of different modules in the same circuit, enabling the output of different pulse signals at different nodes of the same circuit to perform corresponding functions. This achieves functional reuse of the same circuit, simplifies the internal circuit composition, reduces the cost of the beauty device, and generates corresponding pulse signals according to functional requirements, ensuring the efficient operation of each function, improving the beauty effect of the beauty device, and enhancing the user experience.
[0011] In one optional implementation, the rectangular pulse signal generation module includes: a first power supply; a timer, the power supply terminal of which is connected to the positive terminal of the first power supply, and the ground terminal of which is connected to a grounding point and the negative terminal of the first power supply; a first resistor, the first end of which is connected to the reset terminal of the timer, and the second end of which is connected to the discharge terminal of the timer; a second resistor, the first end of which is connected to the second end of the first resistor, and the second end of which is connected to the threshold terminal and the trigger terminal of the timer; and a first capacitor, the first end of which is connected to the second end of the second resistor, and the second end of which is connected to the grounding point.
[0012] This invention, by deploying a pulse generation module, can generate pulse signals of the optimal frequency required for microcurrent function by adjusting the parameters of circuit components, thereby optimizing the stimulation effect on the skin and improving the cosmetic effect of microcurrent.
[0013] In one alternative implementation, the resistance value of the second resistor is at least ten times higher than the resistance value of the first resistor.
[0014] This invention limits the resistance values of different resistors in the rectangular pulse generation module, ensuring that the ratio of high to low levels of the generated pulse signal is close, thereby outputting a rectangular pulse signal with the optimal frequency and improving the beauty effect of the microcurrent function of the beauty device.
[0015] In one alternative implementation, the rectangular pulse signal shaping module includes: a second capacitor, the first end of which is connected to the output of a timer.
[0016] In one optional implementation, the first functional control module includes: a first switch, with its first end connected to the second end of a second capacitor and its second end connected to a first metal electrode.
[0017] This invention converts rectangular pulse signals into symmetrical positive and negative rectangular pulse signals using a capacitor. By activating a corresponding switch, these symmetrical rectangular pulse signals are output to the metal electrode corresponding to the induction function. This allows for control of the circuit via a switch to determine whether the induction function is executed, thus enabling its activation or deactivation. By employing symmetrical rectangular pulse signals to execute the induction function, the electrochemical corrosion problem caused by DC or DC pulse-based induction functions can be solved, and the efficiency is significantly improved.
[0018] In one optional implementation, the second functional control module includes: a charge-discharge voltage divider unit connected to the second terminal of the second capacitor, used to convert the positive and negative symmetrical rectangular pulse signal into a sinusoidal pulse signal; and a signal amplification unit connected to the charge-discharge voltage divider unit, used to amplify and shape the sinusoidal pulse signal to obtain a sinusoidal pulse signal.
[0019] This invention converts positive and negative symmetrical rectangular pulse signals into sinusoidal pulse signals and applies amplitude methods to these sinusoidal pulse signals to obtain the optimal frequency sinusoidal pulse signal required for microcurrent functions, thereby achieving the best cosmetic effect.
[0020] In one optional embodiment, the charge / discharge voltage divider unit includes: a third resistor, the first end of which is connected to the second end of the second capacitor; a fourth resistor, the first end of which is connected to the second end of the third resistor, and the second end of which is connected to the enable control terminal of the control module; a fifth resistor, the first end of which is connected to the second end of the third resistor, and the second end of which is connected to a ground point; and a third capacitor, the first end of which is connected to the second end of the third resistor, and the second end of which is connected to a ground point.
[0021] This invention, through a charge-discharge voltage divider unit, can convert positive and negative symmetrical rectangular pulse signals into sinusoidal pulse signals based on the import function, thereby achieving functional reuse of the same pulse signal and reducing the design cost of the beauty device.
[0022] In one optional embodiment, the signal amplification unit includes: a second power supply; a fourth capacitor, the first end of which is connected to the second end of a third resistor; an operational amplifier, the positive input terminal of which is connected to the second end of the fourth capacitor, the positive power supply terminal of which is connected to the positive terminal of the second power supply, and the negative power supply terminal of which is connected to a ground point; a sixth resistor, the first end of which is connected to the positive terminal of the second power supply, and the second end of which is connected to the positive input terminal of the operational amplifier; a seventh resistor, the first end of which is connected to the second end of the sixth resistor, and the second end of which is connected to the negative terminal of the second power supply and the ground point; an eighth resistor, the first end of which is connected to the negative input terminal of the operational amplifier, and the second end of which is connected to the output terminal of the operational amplifier; a ninth resistor, the first end of which is connected to the negative input terminal of the operational amplifier; a fifth capacitor, the first end of which is connected to the second end of the eighth resistor, and the second end of which is connected to a ground point; a tenth resistor, the first end of which is connected to the output terminal of the operational amplifier; a sixth capacitor, the first end of which is connected to the second end of the tenth resistor, and the second end of which is connected to a ground point; a seventh capacitor, the first end of which is connected to the output terminal of the operational amplifier; and a second switch, the first end of which is connected to the second end of the seventh capacitor, and the second end of which is connected to a second metal electrode.
[0023] This invention, through a second power supply and corresponding components, can increase the amplitude of a sinusoidal pulse signal and convert it into a sinusoidal pulse signal whose amplitude and frequency meet the requirements of the microcurrent function, thereby improving the cosmetic effect of the microcurrent function. Simultaneously, by controlling the opening of the corresponding switch to output a sinusoidal pulse signal to the metal electrode corresponding to the microcurrent function, the user can determine whether to activate the microcurrent function according to their needs.
[0024] In one optional implementation, the control terminals corresponding to the first power supply, the second power supply, the first switch, and the second switch are respectively connected to the control terminal of the control module.
[0025] This utility model connects to the corresponding power supply and switch through a control module, and can control the power supply and switch to be turned on or off according to the selected functional mode, thereby executing different functions and realizing the reuse of input function and micro-current function under the same circuit.
[0026] Secondly, this utility model provides a multifunctional beauty device, comprising:
[0027] External buttons are used to select function modes and / or gear information;
[0028] The pulse signal output circuit, which performs multiplexing of the functions described in the first aspect or any of its corresponding embodiments, is connected to an external button and is used to output a pulse signal.
[0029] The metal electrode is connected to the multiplexed pulse signal output circuit to apply the pulse signal to the user's skin.
[0030] This invention controls the conduction of different modules in the same circuit, enabling the output of different pulse signals at different nodes of the same circuit to perform corresponding functions. This achieves functional reuse of the same circuit, simplifies the internal circuit composition, reduces the cost of the beauty device, and generates corresponding pulse signals according to functional requirements, ensuring the efficient operation of each function, improving the beauty effect of the beauty device, and enhancing the user experience.
[0031] In one alternative implementation, the beauty device further includes a buzzer and an indicator light, which are respectively connected to the control module and used to emit a buzzer indication signal or a light indication signal.
[0032] This invention, by deploying a buzzer and indicator light, can emit indication signals to remind users to perform operations such as face-changing, thereby ensuring the beauty effect. Attached Figure Description
[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of the circuit structure of a functionally multiplexed pulse signal output circuit according to an embodiment of the present invention;
[0035] Figure 2 This is a schematic diagram of the rectangular pulse generation module circuit structure of the functional multiplexing pulse signal output circuit according to an embodiment of the present utility model;
[0036] Figure 3 This is a schematic diagram of the signal amplification unit circuit structure of the functional multiplexing pulse signal output circuit according to an embodiment of the present utility model;
[0037] Figure 4 This is a structural block diagram of a beauty device that reuses functions according to an embodiment of the present utility model;
[0038] Figure 5 This is a flowchart illustrating the control method of a multifunctional beauty device according to an embodiment of the present invention.
[0039] Figure 6 This is a schematic flowchart illustrating the control method of a multifunctional beauty device according to an embodiment of the present invention.
[0040] Figure 7 This is a structural block diagram of the control module of the multifunctional beauty device according to an embodiment of the present utility model;
[0041] Figure 8 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present utility model.
[0042] Explanation of reference numerals in the attached figures: 100 - Rectangular pulse signal generation module; 200 - Rectangular pulse signal shaping module; 300 - First function control module; 400 - Second function control module; 401 - Charge / discharge voltage divider unit; 402 - Signal amplification unit; 500 - Control module. Detailed Implementation
[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0044] This utility model embodiment is applicable to skincare scenarios where the iontophoresis or microcurrent function of a beauty device is used to promote the effective absorption of skincare products. The microcurrent function (also known as EMS function) effectively stimulates deep skin cells by simulating human bio-currents, resulting in smoother skin, delayed skin aging, and rejuvenated skin. The iontophoresis function uses current to help charged nutrients penetrate the skin surface and reach the dermis. Due to the high resistance of the skin surface, simply applying skincare products makes it difficult for active ingredients to directly reach the deep layers of the skin. Iontophoresis technology uses a weak current to help these ingredients penetrate better. Currently, the EMS signal generated by EMS functions in the industry is an AC pulse, but it is generally generated by stepping up the voltage with a transformer, resulting in a frequency as high as 20kHz. This high operating frequency cannot meet the frequency requirements for optimal beauty effects. Furthermore, the iontophoresis function generally uses a DC or DC pulse waveform, which can easily lead to electrochemical corrosion with long-term use. The causes include:
[0045] (1) Potential difference: In an electrolyte solution, there is a potential difference between the positive electrode (anode) and the negative electrode (cathode). Because the positive electrode is at a higher potential, it is more prone to oxidation, that is, metal atoms lose electrons and become ions that enter the solution, forming corrosion.
[0046] (2) Oxidation reaction: The metal positive electrode will be oxidized in the electrolyte solution. The metal atoms (M) lose electrons and become metal ions (M^n+) and enter the solution, that is, M-ne-→M^n+. This process is called anodic oxidation, which is the main cause of corrosion.
[0047] (3) Electrolyte environment: The beauty solution acts as an electrolyte under an electric field, and the properties of the electrolyte solution (such as acidity / alkalinity, chloride ion concentration, etc.) will also affect the corrosion rate of the metal. For example, an acidic environment will accelerate the corrosion of the metal, while some electrolytes (such as chlorides) can also promote the corrosion reaction.
[0048] In summary, the EMS function of current beauty devices cannot generate the optimal frequency EMS signal, the import function is prone to electrochemical corrosion, and the EMS function and import function are usually designed as independent generating modules, resulting in higher costs for beauty devices and failure to achieve the best beauty effects.
[0049] According to an embodiment of the present invention, a pulse signal output circuit with multiplexed functions is provided. It should be noted that, as used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.
[0050] This embodiment provides a pulse signal output circuit with multiplexed functions. Figure 1 This is a schematic diagram of the circuit structure of the functionally multiplexed pulse signal output circuit according to an embodiment of the present invention, as shown below. Figure 1 As shown, the pulse signal output circuit includes:
[0051] The rectangular pulse signal generation module 100 is used to generate a rectangular pulse signal of a preset frequency;
[0052] A rectangular pulse signal shaping module 200 is connected to the rectangular pulse signal generation module 100 and is used to convert the rectangular pulse signal into a positive and negative symmetrical rectangular pulse signal of the preset frequency.
[0053] The first functional control module 300 is connected to the rectangular pulse signal shaping module 200 and is used to output positive and negative symmetrical rectangular pulse signals to the first metal electrode.
[0054] The second function control module 400 is connected to the rectangular pulse signal shaping module 200 and is used to convert positive and negative symmetrical rectangular pulse signals into sinusoidal pulse signals of a preset frequency and output the sinusoidal pulse signals to the second metal electrode.
[0055] The control module 500 is connected to the rectangular pulse signal generation module 100, the first function control module 300, and the second function control module 400. It is used to activate the rectangular pulse signal generation module 100, the rectangular pulse signal shaping module 200, and the first function control module 300 according to the selected function mode and / or gear information to execute the import function, or to activate the rectangular pulse signal generation module 100, the rectangular pulse signal shaping module 200, and the second function control module 400 to execute the micro-current function.
[0056] Specifically, in the embodiments of this utility model, such as Figure 2 As shown, the rectangular pulse signal generation module 100 includes: a first power supply DC1; a timer U1, whose power supply terminal V+ is connected to the positive terminal + of the first power supply DC1, and whose ground terminal GND is connected to the grounding point and the negative terminal - of the first power supply DC1; a first resistor R2, whose first end is connected to the reset terminal RS of the timer U1, and whose second end is connected to the discharge terminal DIS of the timer U1; a second resistor R4, whose first end is connected to the second end of the first resistor R2, and whose second end is connected to the threshold terminal THR and the trigger terminal TR of the timer U1; and a first capacitor C4, whose first end is connected to the second end of the second resistor R4, and whose second end is connected to the grounding point. This invention, by deploying a pulse generation module, can generate pulse signals of the optimal frequency required for microcurrent function by adjusting the parameters of circuit components, optimizing the stimulation effect on the skin, and thus improving the microcurrent cosmetic effect.
[0057] In some optional embodiments, the timer U1 in this embodiment of the present invention is a 555 timer. U1, R2, R4, C4, and DC1 together form a multivibrator based on the 555 timer. The resistance value of the second resistor R4 is much higher than that of the first resistor R2, preferably more than ten times higher, but not exceeding 1MΩ, thereby ensuring that a rectangular pulse signal with a high and low level ratio close to 50% is formed at the output terminal 0 of the 555 timer. Figure 3 As shown, the low level is approximately 0V, ensuring an optimal rectangular pulse signal output frequency and enhancing the beauty effect of the microcurrent function of the beauty device. To avoid interference, the capacitance of C4 should not be too small; empirically, it should be greater than 10pF, preferably above 100pF. Taking R2 as 10KΩ, R4 as 100KΩ, and C4 as 4700pF as an example, the high-level period T1, low-level period T2, total period T, and corresponding frequency f of the rectangular pulse signal are shown below. This is only an example and not a limitation:
[0058] T1 = (R2 + R4) * C4 * ln2 = 358us
[0059] T2 = R4 * C4 * ln2 = 326us
[0060] T = (R² + 2R⁴) * C⁴ * ln² = 684 μs
[0061] f=1 / T=1 / ((R2+2R4)*C4*ln2)=1.46KHz
[0062] In some alternative implementations, such as Figure 2 As shown, the rectangular pulse signal shaping module 200 includes a second capacitor C2. The first end of C2 is connected to the output terminal 0 of timer U1, which can shape the low-level rectangular pulse (approximately 0V) generated by the output terminal 0 of the 555 timer into a positive and negative symmetrical rectangular pulse signal. However, in this embodiment, the positive and negative symmetry is not limited to complete symmetry. To control the input function, the first function control module 300 is configured as a first switch K1. The first end of K1 is connected to the second end of the second capacitor C2, and the second end of K1 is connected to the metal electrode corresponding to the input function. If K1 is turned on, the positive and negative symmetrical rectangular pulse signal can be output to the metal electrode corresponding to the input function. This embodiment of the invention, by using a positive and negative symmetrical rectangular pulse signal to execute the input function, can solve the electrochemical corrosion problem caused by DC or DC pulse input functions, and is more efficient.
[0063] In some alternative implementations, such as Figure 2 As shown, the second functional control module 400 includes: a charge / discharge voltage divider unit 401, connected to the second terminal of the second capacitor, used to convert the positive and negative symmetrical rectangular pulse signals into sinusoidal pulse signals; and a signal amplification unit 402, connected to the charge / discharge voltage divider unit 401, used to amplify and shape the sinusoidal pulse signals to obtain sinusoidal pulse signals. It can be seen that regardless of whether K1 of the first functional control module 300 is on or off, the positive and negative symmetrical rectangular pulse signals obtained after passing through C2 can enter the second functional control module 400. This is because the same signal in the same circuit can be used to achieve functional multiplexing. Furthermore, based on the import function achieved by the positive and negative symmetrical rectangular pulse signals, the positive and negative symmetrical rectangular pulse signals are converted into sinusoidal pulse signals, achieving functional multiplexing of the same pulse signal and reducing the design cost of the beauty device.
[0064] In some alternative implementations, such as Figure 2As shown, the charge / discharge voltage divider unit 401 includes: a third resistor R5, the first end of which is connected to the second end of the second capacitor C2; a fourth resistor R1, the first end of which is connected to the second end of the third resistor R5, and the second end of which is connected to the enable control terminal MCU_CTRL of the control module 500; a fifth resistor R6, the first end of which is connected to the second end of the third resistor R5, and the second end of which is connected to a ground point; and a third capacitor C5, the first end of which is connected to the second end of the third resistor R5, and the second end of which is connected to a ground point. The signal amplification unit includes: a second power supply DC2; a fourth capacitor C6, the first end of which is connected to the second end of a third resistor R5; an operational amplifier U2, the positive input terminal of which is connected to the second end of the fourth capacitor C6, the positive power supply terminal of which is connected to the positive terminal of the second power supply DC2, and the negative power supply terminal of which is connected to ground; a sixth resistor R8, the first end of which is connected to the positive terminal of the second power supply DC2, and the second end of which is connected to the positive input terminal of the operational amplifier U2; a seventh resistor R7, the first end of which is connected to the second end of the sixth resistor R8, and the second end of which is connected to the negative terminal of the second power supply DC2 and ground; and an eighth resistor R9, the first end of which is connected to the negative input terminal of the operational amplifier U2. The input terminals are connected as follows: the second terminal of R9 is connected to the output terminal of operational amplifier U2; the first terminal of the ninth resistor R10 is connected to the negative input terminal of operational amplifier U2; the first terminal of the fifth capacitor C7 is connected to the second terminal of the eighth resistor R9, and the second terminal of C7 is connected to the ground point; the first terminal of the tenth resistor R11 is connected to the output terminal of operational amplifier U2; the first terminal of the sixth capacitor C9 is connected to the second terminal of the tenth resistor R11, and the second terminal of C9 is connected to the ground point; the first terminal of the seventh capacitor C8 is connected to the output terminal of operational amplifier U2; the first terminal of the second switch K2 is connected to the second terminal of the seventh capacitor C8, and the second terminal is connected to the metal electrode corresponding to the EMS function.
[0065] In this embodiment of the invention, R5, C5, R6, and optional resistor R1 form an RC charging and discharging voltage divider circuit. The positive and negative symmetrical rectangular pulse signals are transformed into sinusoidal pulse signals via the RC charging and discharging circuit. Optional resistor R1 is connected to the enable control terminal of the control module MCU, controlled by the output enable control signal MCU_CTRL. When disabled, the signal is floating; when enabled, MCU_CTRL is low, forming a voltage divider circuit with R5 and R6, changing the voltage amplitude at C5. Due to the AC conduction characteristic of C6, the change in voltage amplitude at C5 also causes a change in the voltage on the right side of C6, i.e., the input voltage of U2 changes accordingly. Therefore, the AC pulse signal (sinusoidal pulse signal) generated here ultimately enters the positive input terminal A+ of operational amplifier U2. Further, if DC2 is turned on, R7 and R8 divide DC2, and the voltage V1 flowing to the positive input terminal A+ of operational amplifier U2 is:
[0066] V1 = R7 / (R7 + R8) * DC2
[0067] In some alternative implementations, such as Figure 4 As shown, the sinusoidal pulse signal from C6 and the DC voltage divider V1 are superimposed and enter the positive input terminal A+ of operational amplifier U2. The output terminals R9, R10, and C7 form an RC impedance network. The voltage across C9 (R11 is a current-limiting resistor, typically not exceeding 1Ω, with a typical value of 0.1Ω) cannot change abruptly. Therefore, when the AC input to U2's A+ exceeds the average value of the cycle, U2's output OUTA cannot immediately go high; the main charging circuit is R9, R10, and C7. Similarly, when the AC input from C6 changes from above average to below average, U2's output OUTA cannot immediately go low. The lowest voltage 0V pulse signal output from U2's output OUTA is transformed into a symmetrical sinusoidal pulse signal via C8, with the same frequency as the 555 timer's output frequency. This output pulse signal shape is the required EMS pulse signal shape, as shown below. Figure 4 As shown.
[0068] In some optional implementations, the control terminals corresponding to the first power supply DC1, the second power supply DC2, the first switch K1, and the second switch K2 are respectively connected to the control terminals of the control module 500. These are not shown in the circuit diagram. The control module 500 implements the import function or EMS function by controlling the on / off state of the first power supply DC1, the second power supply DC2, the first switch K1, and the second switch K2. For example... Figure 2 As shown, when DC1 and K1 are turned on, the OUT_import port outputs a positive and negative symmetrical rectangular pulse signal to the metal electrode corresponding to the import function of the beauty device. After the electrode contacts the skin, the import function is executed. When DC1, DC2 and K2 are turned on, the OUT_EMS outputs a sine pulse signal to the metal electrode corresponding to the EMS function of the beauty device. After the electrode contacts the skin, the EMS function is executed. The metal electrode corresponding to the import function and the metal electrode corresponding to the EMS function may be the same metal electrode or different metal electrodes.
[0069] The functionally multiplexed pulse signal output circuit provided by this utility model, through a control module, activates a rectangular pulse signal generation module, a rectangular pulse signal shaping module, and a first functional control module according to the functional mode and / or gear information. The rectangular pulse signal generation module generates a rectangular pulse signal of a preset frequency, the rectangular pulse signal shaping module converts the rectangular pulse signal into a positive and negative symmetrical rectangular pulse signal, and the first functional control module outputs the positive and negative symmetrical rectangular pulse signal to the corresponding metal electrode to perform the input function. Alternatively, the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the second functional control module can be activated. The rectangular pulse signal generation module generates a rectangular pulse signal of a preset frequency, which is then converted into a positive and negative symmetrical rectangular pulse signal by the rectangular pulse signal shaping module. The second functional control module converts the positive and negative symmetrical rectangular pulse signal into a sinusoidal pulse signal and outputs it to the corresponding metal electrode to perform the microcurrent function. This invention controls the conduction of different modules in the same circuit, enabling the output of different pulse signals at different nodes of the same circuit to perform corresponding functions. This achieves functional reuse of the same circuit, simplifies the internal circuit composition, reduces the cost of the beauty device, and generates corresponding pulse signals according to functional requirements, ensuring the efficient operation of each function, improving the beauty effect of the beauty device, and enhancing the user experience.
[0070] This utility model embodiment also provides a beauty device. Figure 4 This is a structural block diagram of a multifunctional beauty device according to an embodiment of the present invention, such as... Figure 4 As shown, the beauty device includes:
[0071] External buttons are used to select function modes and / or gear information; the above Figure 1 The multiplexed pulse signal output circuit shown is connected to an external button and is used to output pulse signals; the metal electrode is connected to the multiplexed pulse signal output circuit and is used to apply the pulse signal to the user's skin.
[0072] Specifically, in this embodiment of the invention, the beauty device is equipped with external buttons, including a power button, a function selection button, and a speed adjustment button. The function selection button allows switching between the import function and the EMS function; this is merely an example and not a limitation. Furthermore, metal electrodes corresponding to different functions are deployed. After the beauty device is operating at the selected function, the user places the metal electrodes in contact with the skin, thereby outputting pulse signals to the corresponding metal electrodes, which then act on the skin to promote the absorption of skincare products.
[0073] In some optional embodiments, the beauty device of this utility model is also equipped with a buzzer and an indicator light, which are connected to the control module respectively, to emit a buzzer indication signal or a light indication signal to remind the user whether the function is turned on, whether a face-changing operation is required, etc., which are not shown in the figure.
[0074] This invention controls the conduction of different modules in the same circuit of a beauty device, enabling the output of different pulse signals at different nodes of the same circuit to perform corresponding functions. This achieves functional reuse of the same circuit, simplifies the internal circuit composition, reduces the cost of the beauty device, and generates corresponding pulse signals according to functional requirements, ensuring the efficient operation of each function, improving the beauty effect of the beauty device, and enhancing the user experience.
[0075] This utility model embodiment also provides a control method embodiment for a multifunctional beauty device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.
[0076] This embodiment provides a control method for a multifunctional beauty device, which can be used in the control module of the pulse signal output circuit in the aforementioned beauty device. Figure 5 This is a flowchart of a control method for a multifunctional beauty device according to an embodiment of the present invention, such as... Figure 5 As shown, the process includes the following steps:
[0077] Step S501: After detecting the power-on signal, obtain the selected function mode and / or gear information.
[0078] Specifically, in this embodiment of the invention, the beauty device is equipped with external buttons, including a power button, a function selection button, and a speed adjustment button. The function selection button allows switching between the import function and the EMS function; this is merely an example and not a limitation. When the user presses the power button and the corresponding function selection button and / or speed adjustment button, a power-on signal is generated, and the function mode and speed information are read.
[0079] Step S502: Based on the function mode and / or gear information, activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the first function control module of the beauty instrument to execute the import function, or activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the second function control module to execute the microcurrent function.
[0080] Specifically, in the embodiments of this utility model, such as Figure 6As shown, the function determines whether the user selects the import function or the EMS function. If the import function is selected, the first power supply DC1 of the rectangular pulse signal generation module in the internal circuit of the beauty device is turned on. At this time, the running time is recorded. If the running time exceeds the first time threshold t1, then U1 is stable and the first switch K1 of the first function control module in the internal circuit is turned on. At this time, it is equivalent to turning on the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the first function control module, and outputting positive and negative symmetrical rectangular pulse signals to the metal electrode corresponding to the import function on the outside of the beauty device. After the electrode contacts the skin, the import function is executed. Here, t1 is the stabilization time of the 555 timer and surrounding circuits, which is generally set to the millisecond level.
[0081] In some alternative implementations, such as Figure 6 As shown, if the EMS function is selected, the user-selected power level information is obtained. If the power level is low, the enable control signal MCU_CTRL at the enable control terminal is set to a high impedance state; otherwise, it is set to 0. Simultaneously, the first power supply DC1 of the rectangular pulse signal generation module and the second power supply DC2 of the second function control module in the internal circuit of the beauty device are turned on, and the first switch K1 is controlled to be in the off state. At this time, the running time is recorded. If the running time exceeds the second time threshold t2, the second switch K2 of the second function control module in the internal circuit is turned on. This is equivalent to turning on the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the second function control module, outputting a sinusoidal pulse signal of a specific frequency to the metal electrode corresponding to the EMS function on the outside of the beauty device. After the electrode contacts the skin, the EMS function is executed. Here, t2 is the maximum stabilization time of U1, U2, and the surrounding circuits, which is generally set to the millisecond level.
[0082] Step S503: Obtain the running time of the import function or microcurrent function, and disconnect the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the first function control module according to the running time, or disconnect the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the second function control module.
[0083] Specifically, in the embodiments of this utility model, such as Figure 6 As shown, after executing the import function, the running time continues to be recorded. If the running time exceeds the third time threshold t3, a buzzer or light indicator signal is generated, and the user is prompted to perform the face-swapping operation via a buzzer or indicator light. The running time is then recorded again. If the running time exceeds t3 again, DC1 and K1 are disconnected (the control of DC1 can also be determined according to actual needs), and the beauty device ends its operation. t3 is the single-sided duration of the import function, set according to the beauty effect, generally not exceeding 3 minutes, meaning the working time generally does not exceed 6 minutes, but this is not a limitation.
[0084] In some alternative implementations, such as Figure 6 As shown, after executing the EMS function, the running time continues to be recorded. If the running time exceeds the fourth time threshold t4, a buzzer or light indicator signal is generated, prompting the user to perform the face-swapping operation via a buzzer or indicator light. The running time is then recorded again. If the running time exceeds t4 again, DC1, DC2, and K2 are disconnected (the control of DC1 and DC2 can also be determined according to actual needs). Simultaneously, K1 and the enable control terminal are disconnected, and the beauty device ends its operation. t4 is the single-sided duration of the EMS function, set according to the beauty effect, generally not exceeding 3 minutes, meaning the working time generally does not exceed 6 minutes, but this is not a limitation.
[0085] The control method for a multifunctional beauty device provided by this utility model controls the conduction of different modules according to the user-selected function mode and / or gear information after power-on, executes the import function or microcurrent function, and controls the disconnection of the corresponding module according to the running time of each function. It can provide users with different beauty functions on the same circuit basis, realize the function reuse of the circuit, and reduce the cost of the beauty device while ensuring the beauty effect.
[0086] This embodiment also provides a control module for a multifunctional beauty device, which is used to implement the above-mentioned functions. Figure 5 The embodiments and preferred embodiments shown will not be repeated as already described. As used below, the term "unit" can refer to a combination of software and / or hardware that performs a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.
[0087] This embodiment provides a control module for a multifunctional beauty device, such as... Figure 7 As shown, it includes:
[0088] The information acquisition unit 701 is used to acquire the selected function mode and / or gear information after detecting the power-on signal.
[0089] The function multiplexing unit 702 is used to activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the first function control module of the beauty instrument according to the function mode and / or gear information to perform the import function, or to activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the second function control module to perform the microcurrent function.
[0090] The operation control unit 703 is used to obtain the running time of the import function or the micro-current function, and disconnect the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the first function control module according to the running time, or disconnect the rectangular pulse signal generation module, the rectangular pulse signal shaping module and the second function control module.
[0091] In some alternative implementations, the function multiplexing unit 702 includes:
[0092] The first functional control subunit is used to turn on the first power supply of the rectangular pulse signal generation module if the functional mode is the import function; to obtain the first running time, and if the first running time exceeds the first time threshold, to turn on the first switch of the first functional control module.
[0093] The second functional control subunit is used to: acquire gear information if the functional mode is microcurrent function; set the enable control terminal of the main control mode to the first potential if the gear information is the first gear; set the enable control terminal to the second potential if the gear information is the second gear; turn on the first power supply of the rectangular pulse signal generation module and the second power supply of the first power supply of the rectangular pulse signal generation module; acquire the second running time; and turn on the second switch of the second functional control module if the second running time exceeds the second time threshold.
[0094] In some alternative implementations, the operation control unit 703 includes:
[0095] The first operation control subunit is used to acquire the third operation time. If the third operation time exceeds the third time threshold or the fourth time threshold, a buzzer indicator signal or a light indicator signal is generated.
[0096] The second operation control subunit is used to obtain the fourth operation time. If the fourth operation time exceeds the third time threshold or the fourth time threshold, the first power supply and the first switch are disconnected, or the first power supply, the second power supply and the second switch are disconnected.
[0097] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.
[0098] In this embodiment, the control module is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.
[0099] This utility model embodiment also provides a computer device having the above-described features. Figure 7 The control module shown.
[0100] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of this utility model, such as... Figure 8As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 8 Take a processor 10 as an example.
[0101] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.
[0102] The memory 20 stores instructions executable by at least one processor 10 to cause the at least one processor 10 to perform the method shown in the above embodiments.
[0103] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
[0104] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.
[0105] The computer device also includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30, and output device 40 can be connected via a bus or other means. Figure 8 Taking the example of a connection between China and Israel via a bus.
[0106] Input device 30 can receive input numerical or character information, and generate key signal inputs related to user settings and function control of the computer device, such as a touchscreen, keypad, mouse, trackpad, touchpad, joystick, one or more mouse buttons, trackball, joystick, etc. Output device 40 may include display devices, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibrating electrodes). The aforementioned display devices include, but are not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some alternative embodiments, the display device may be a touchscreen.
[0107] This utility model embodiment also provides a computer-readable storage medium. The methods described above according to this utility model embodiment can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that a computer, processor, microprocessor controller, or programmable hardware includes storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.
[0108] A portion of this invention can be applied as a computer program product, such as computer program instructions. When executed by a computer, these instructions, through the operation of the computer, can invoke or provide methods and / or technical solutions according to this invention. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, and installation package files. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions; the computer compiling the instructions and then executing the corresponding compiled program; the computer reading and executing the instructions; or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.
[0109] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A functionally multiplexed pulse signal output circuit, characterized in that, include: A rectangular pulse signal generation module is used to generate rectangular pulse signals at a preset frequency. A rectangular pulse signal shaping module, connected to the rectangular pulse signal generating module, is used to convert the rectangular pulse signal into a positive and negative symmetrical rectangular pulse signal of the preset frequency; The first functional control module is connected to the rectangular pulse signal shaping module and is used to output the positive and negative symmetrical rectangular pulse signals to the first metal electrode. The second functional control module is connected to the rectangular pulse signal shaping module and is used to convert the positive and negative symmetrical rectangular pulse signal into a sinusoidal pulse signal of the preset frequency, and output the sinusoidal pulse signal to the second metal electrode. The control module is connected to the rectangular pulse signal generation module, the first function control module, and the second function control module. It is used to activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the first function control module according to the selected function mode and / or gear information to perform the import function, or to activate the rectangular pulse signal generation module, the rectangular pulse signal shaping module, and the second function control module to perform the microcurrent function.
2. The pulse signal output circuit according to claim 1, characterized in that, The rectangular pulse signal generation module includes: First power supply; The timer's power supply terminal is connected to the positive terminal of the first power supply, and its grounding terminal is connected to the grounding point and the negative terminal of the first power supply. The first resistor has its first end connected to the reset terminal of the timer and its second end connected to the discharge terminal of the timer. The second resistor has its first end connected to the second end of the first resistor, and its second end connected to the threshold and trigger ends of the timer. The first capacitor has its first end connected to the second end of the second resistor, and its second end connected to the grounding point.
3. The pulse signal output circuit according to claim 2, characterized in that, The resistance value of the second resistor is at least ten times higher than the resistance value of the first resistor.
4. The pulse signal output circuit according to claim 2, characterized in that, The rectangular pulse signal shaping module includes: The second capacitor has its first end connected to the output of the timer.
5. The pulse signal output circuit according to claim 4, characterized in that, The first function control module includes: The first switch has its first end connected to the second end of the second capacitor, and its second end connected to the first metal electrode.
6. The pulse signal output circuit according to claim 4, characterized in that, The second functional control module includes: A charge / discharge voltage divider unit, connected to the second terminal of the second capacitor, is used to convert the positive and negative symmetrical rectangular pulse signal into a sinusoidal pulse signal. The signal amplification unit is connected to the charge-discharge voltage divider unit and is used to amplify and shape the amplitude of the sinusoidal pulse signal to obtain the sinusoidal pulse signal.
7. The pulse signal output circuit according to claim 6, characterized in that, The charge / discharge voltage divider unit includes: The third resistor has its first end connected to the second end of the second capacitor; The fourth resistor has its first end connected to the second end of the third resistor, and its second end connected to the enable control terminal of the control module. The fifth resistor has its first end connected to the second end of the third resistor, and its second end connected to the grounding point. The first end of the third capacitor is connected to the second end of the third resistor, and the second end is connected to the grounding point.
8. The pulse signal output circuit according to claim 7, characterized in that, The signal amplification unit includes: Second power supply; The fourth capacitor has its first terminal connected to the second terminal of the third resistor; The operational amplifier has its positive input terminal connected to the second terminal of the fourth capacitor, its positive power supply terminal connected to the positive terminal of the second power supply, and its negative power supply terminal connected to the ground point. The sixth resistor has its first end connected to the positive terminal of the second power supply and its second end connected to the positive input terminal of the operational amplifier. The seventh resistor has its first end connected to the second end of the sixth resistor, and its second end connected to the negative terminal of the second power supply and the grounding point. The eighth resistor has its first end connected to the negative input terminal of the operational amplifier and its second end connected to the output terminal of the operational amplifier. The ninth resistor has its first end connected to the negative input terminal of the operational amplifier; The fifth capacitor has its first end connected to the second end of the eighth resistor, and its second end connected to the grounding point. The tenth resistor has its first end connected to the output terminal of the operational amplifier; The sixth capacitor has its first terminal connected to the second terminal of the tenth resistor, and its second terminal connected to the grounding point. The seventh capacitor has its first terminal connected to the output terminal of the operational amplifier; The second switch has its first end connected to the second end of the seventh capacitor, and its second end connected to the second metal electrode.
9. The pulse signal output circuit according to claim 8, characterized in that, The control terminals corresponding to the first power supply, the second power supply, the first switch, and the second switch are respectively connected to the control terminal of the control module.
10. A multifunctional beauty device, characterized in that, include: External buttons are used to select function modes and / or gear information; The functionally multiplexed pulse signal output circuit according to any one of claims 1 to 9 is connected to the external button and is used to output a pulse signal; A metal electrode is connected to the multiplexed pulse signal output circuit for applying the pulse signal to the user's skin.
11. The beauty device according to claim 10, characterized in that, Also includes: The buzzer and indicator light are respectively connected to the control module of the multiplexed pulse signal output circuit, and are used to emit buzzer indication signals or light indication signals.