Lamp voltage control method, lamp voltage control circuit and beauty instrument

Abstract

This invention discloses a lamp voltage control method comprising: outputting a voltage control signal to a power supply system electrically connected to the lamp to control the power supply system to output a supply voltage to the lamp; determining whether the voltage output by the power supply system to the lamp in response to the voltage control signal is equal to a target voltage value contained in the voltage control signal; if so, gradually increasing the target voltage value contained in the voltage control signal; if not, decreasing the target voltage value of the voltage control signal to the voltage value corresponding to the previous step of increment. This invention also provides a lamp voltage control circuit and a beauty device using this lamp voltage control method. The technical solution provided by this invention can quickly and accurately determine the maximum output voltage that the power supply circuit can provide for different lamps, improving the safety and reliability of the circuit operation while reducing cost.

Description

Technical Field

[0001] This invention relates to the field of beauty device technology, and in particular to a lamp voltage control method, a lamp voltage control circuit using the lamp voltage control method, and a beauty device. Background Technology

[0002] As people's living standards improve, the beauty and health of their skin are receiving increasing attention. As a result, beauty lamps have emerged. Beauty lamps on the market include IPL tubes, LED lamps, and halogen lamps. Currently, even for the same type of beauty lamp, different manufacturers produce lamps with inconsistent specifications. Different tubes require different circuits, which increases circuit design costs. Furthermore, if cost-saving measures are taken and only one type of tube is considered in the production of beauty devices, it can easily lead to frequent circuit malfunctions. Summary of the Invention

[0003] This invention provides a lamp voltage control method, a lamp voltage control circuit using this method, and a beauty device. The aim is to quickly and accurately determine the maximum output voltage that the power supply circuit can provide for different lamps, thereby improving the safety and reliability of the circuit operation and reducing costs.

[0004] To achieve the above objectives, this invention proposes a lamp voltage control method, applied to the lamp of a beauty device, comprising:

[0005] Output a voltage control signal to the power supply system electrically connected to the lamp tube to control the power supply system to output a power supply voltage to the lamp tube;

[0006] Determine whether the voltage output by the power supply system to the lamp in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal;

[0007] If yes, then the target voltage value contained in the voltage control signal is gradually increased; if no, then the target voltage value of the voltage control signal is decreased to the voltage value corresponding to the previous increase.

[0008] In some embodiments, before outputting a voltage control signal to the power supply system electrically connected to the lamp, the method further includes:

[0009] Monitor whether an update event has occurred for the currently applicable gear level of the target voltage value; if so, update the current gear level.

[0010] Each gear level corresponds to a progressively increasing voltage range, which includes a minimum voltage value and a maximum voltage value. The target voltage value contained in the voltage control signal gradually increases from the minimum voltage value of the current gear level to the maximum voltage value.

[0011] In some embodiments, before executing the output of the voltage control signal to the power supply system electrically connected to the lamp, the method further includes:

[0012] A voltage control signal containing a preheating voltage value is continuously output to the power supply system for a preset duration to control the power supply system to output a preheating voltage to the lamp tube; the preheating voltage value is less than or equal to the minimum voltage value.

[0013] In some embodiments, the lamp voltage control method further includes:

[0014] Determine whether the maximum voltage value corresponding to the current gear is greater than the power supply voltage value output by the current power supply system to the lamp tube;

[0015] If so, then the starting point for gradually increasing the target voltage value is determined to be the current power supply voltage value output to the lamp tube by the current power supply system.

[0016] If not, a voltage control signal is output to the power supply system to reduce the target voltage value to the maximum voltage value.

[0017] In some embodiments, reducing the target voltage value of the voltage control signal to the voltage value corresponding to the previous increment includes:

[0018] When the power supply voltage output by the power supply system to the lamp tube is less than the target voltage value of the voltage control signal for a preset duration, the target voltage value of the voltage control signal is reduced to the voltage value corresponding to the previous step of increment.

[0019] In some embodiments, the lamp is a halogen lamp.

[0020] The present invention also proposes a lamp voltage control circuit, wherein the lamp voltage control circuit is electrically connected to one end of a power supply system, and the other end of the power supply system is electrically connected to the lamp of the beauty device. The lamp voltage control circuit includes:

[0021] The control unit is used to output a voltage control signal to the power supply system electrically connected to the lamp tube, so as to control the power supply system to output a power supply voltage to the lamp tube;

[0022] The judgment unit is used to determine whether the voltage output by the power supply system to the lamp tube in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal;

[0023] The processing unit is configured to: when the voltage output by the power supply system to the lamp in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal, gradually increase the target voltage value contained in the voltage control signal; and when the voltage output by the power supply system to the lamp in response to the voltage control signal is not equal to the target voltage value contained in the voltage control signal, decrease the target voltage value of the voltage control signal to the voltage value corresponding to the previous step of increment.

[0024] In some embodiments, the power supply system includes a power supply and a power drive module. The voltage output terminal of the power drive module is electrically connected to the lamp tube, the voltage input terminal of the power drive module is electrically connected to the power supply, and the control signal input terminal of the power drive module is also electrically connected to the lamp tube voltage control circuit.

[0025] In some embodiments, the power drive module is a DC-DC converter.

[0026] The present invention also proposes a beauty device, including a beauty device body and a lamp tube disposed in the beauty device body, wherein the lamp tube is controlled by the aforementioned lamp tube voltage control circuit.

[0027] Compared to existing technologies, the present invention controls the power supply voltage provided to the lamp by an output voltage control signal. This voltage control signal is continuously and stably output in a step-by-step incrementing manner. After each increment, the stability of the power supply voltage provided to the lamp is verified. If the target voltage value contained in the voltage control signal is equal to the power supply voltage provided to the lamp, the verification is passed, and the target voltage value of the voltage control signal continues to increase. If the target voltage value contained in the voltage control signal is not equal to the power supply voltage provided to the lamp, the verification fails, and the current target voltage value needs to be reduced to the voltage value that has been verified in the previous step. This allows for the rapid and accurate determination of the maximum output voltage that the power supply system can provide for different lamps. The entire power supply circuit operates with high safety, reliability, and low cost. Attached Figure Description

[0028] Figure 1 This is a flowchart illustrating the first embodiment of the lamp voltage control method of the present invention;

[0029] Figure 2 This is a flowchart illustrating the second embodiment of the lamp voltage control method of the present invention;

[0030] Figure 3 This is a flowchart illustrating the third embodiment of the lamp voltage control method of the present invention;

[0031] Figure 4This is a schematic diagram of the module structure of the lamp voltage control circuit according to an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the module structure of a first embodiment of the lamp voltage control circuit of the present invention for voltage control of a lamp tube;

[0033] Figure 6 This is a schematic diagram of the module structure of a second embodiment of the lamp voltage control circuit of the present invention for controlling the voltage of a lamp. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0036] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0037] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0038] Please see Figure 1 This is a flowchart illustrating the first embodiment of the lamp voltage control method of the present invention.

[0039] In this embodiment, the lamp voltage control method is applied to the lamp of the beauty device, referring to... Figure 1 As shown, the lamp voltage control method in this embodiment includes:

[0040] Step S10: Output a voltage control signal to the power supply system electrically connected to the lamp tube to control the power supply system to output a power supply voltage to the lamp tube.

[0041] Specifically, the power supply system is used to receive voltage control signals and output power supply voltage to the lamp tube according to the voltage control signals and the current hardware environment of the circuit. The magnitude of the power supply voltage is adjusted accordingly based on the target voltage value of the voltage control signal.

[0042] Step S20: Determine whether the voltage output by the power supply system to the lamp tube in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal.

[0043] Specifically, the supply voltage output by the power supply system to the lamp in response to the voltage control signal may or may not be equal to the target voltage value contained in the voltage control signal. The following example illustrates this:

[0044] When the supply voltage output by the power supply system to the lamp in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal, the specific situation is as follows:

[0045] If the target voltage value contained in the voltage control signal is 7V, then under the current circuit hardware conditions, the power supply system responds to the voltage control signal and also outputs a 7V power supply voltage to the lamp.

[0046] The situation where the supply voltage output to the lamp in response to the voltage control signal is not equal to the target voltage value contained in the voltage control signal is as follows:

[0047] The target voltage value contained in the voltage control signal is 7V. Due to the limitations of the current circuit hardware environment, the power supply system cannot respond to the voltage control signal to output a 7V supply voltage to the lamp tube. Instead, it remains at the supply voltage value previously output by the power supply system, such as 6V.

[0048] Step S301: If yes, then gradually increase the target voltage value contained in the voltage control signal.

[0049] Step S302: If not, reduce the target voltage value of the voltage control signal to the voltage value corresponding to the previous step when it was increased.

[0050] In this embodiment, when the power supply system responds to the voltage control signal and outputs a supply voltage to the lamp that is equal to the target voltage value contained in the voltage control signal, the current circuit is in a stable voltage output state. Conversely, if the power supply system cannot respond to the voltage control signal, the supply voltage output to the lamp will not be equal to the target voltage value contained in the voltage control signal, and the current circuit will be in a state of unstable voltage output. For example, the target voltage value contained in the voltage control signal may be 7V, while the supply voltage output by the power supply system to the lamp may be lower than 7V, only 6V.

[0051] If the current circuit is in a stable voltage output state, the target voltage value of the voltage control signal can be gradually increased. This incremental step size can be set to 1V, with the target voltage value increasing sequentially in the order of 7V, 8V, 9V, and so on. Of course, in practical applications, this step size can also be 0.5V or 2V, depending on the hardware environment of the current circuit and the characteristics of the connected lamps.

[0052] If the current circuit experiences unstable voltage output, it's no longer necessary to gradually increase the target voltage value of the voltage control signal. To ensure the circuit's safety and reliability, the target voltage value of the voltage control signal needs to be reduced to the value corresponding to the previous increment. For example, if the target voltage value in the voltage control signal is 7V, and the power supply system cannot respond to the signal and can only provide the lamp with the 6V value corresponding to the previous increment, then the voltage control signal should be reduced to the 6V value to ensure a stable voltage output. This also indicates that, given the current circuit's hardware environment, the maximum output voltage the power supply system can provide to the connected lamp is 6V.

[0053] It should be noted that, in the specific embodiment, step S20 is the step of verifying the stability of the power supply voltage provided to the lamp by the power supply system after each step of increasing the target voltage value. Step S301 is the operation step after verification if the target voltage value of the voltage control signal is equal to the power supply voltage value output by the power supply system to the lamp, i.e., continuing to gradually increase the target voltage value of the voltage control signal. Step S302 is the operation step after verification if the target voltage value of the voltage control signal is not equal to the power supply voltage value output by the power supply system to the lamp, i.e., reducing the target voltage value of the voltage control signal to the voltage value that has been verified in the previous step. Steps S301 and S302 are not sequential; one of the two steps can be implemented at a time.

[0054] This embodiment uses an output voltage control signal to control the power supply voltage provided to the lamp by the power supply system. This voltage control signal is continuously and stably output in a step-by-step incrementing manner. After each increment, the stability of the power supply voltage provided to the lamp is verified. If the target voltage value in the voltage control signal is equal to the power supply voltage provided to the lamp, the verification is passed, and the target voltage value of the voltage control signal continues to increase. If the target voltage value in the voltage control signal is not equal to the power supply voltage provided to the lamp, the verification fails, and the current target voltage value needs to be reduced to the voltage value that has already been verified in the previous step. This allows for the rapid and accurate determination of the maximum output voltage that the power supply system can provide for different lamps. The entire power supply circuit operates with high safety, reliability, and low cost.

[0055] Please see Figure 2 This is a flowchart illustrating the second embodiment of the lamp voltage control method of the present invention.

[0056] Compared with the first embodiment of the lamp voltage control method, this embodiment adds the steps of preheating the connected lamp voltage and updating the applicable gear of the target voltage value, and refines the step of reducing the target voltage value of the voltage control signal to the voltage value corresponding to the previous step of increment.

[0057] In this embodiment, the lamp voltage control method includes:

[0058] Step S40: Continuously output a voltage control signal containing a preheating voltage value to the power supply system for a preset duration, so as to control the power supply system to output a preheating voltage to the lamp tube.

[0059] Among them, the preheating voltage value is less than or equal to the minimum voltage value of the voltage range corresponding to the current gear.

[0060] Specifically, a preheating time, or preset duration, needs to be set for the preheating mode. The lamp needs to be continuously subjected to the preheating voltage value for the preset duration to heat up. The preset duration is usually 5 seconds. Of course, in actual applications, it can be adjusted according to the characteristics of the lamp, as long as the lamp is sufficiently preheated within the preset duration to achieve the desired preheating effect. When starting the preheating mode, the preheating voltage value needs to be maintained stably within the preset duration. If a high voltage is started before the preheating time is reached (e.g., a preheating voltage of 2V, while normal operation is 12V), the lamp's power supply may not be able to handle the excessive instantaneous current, leading to startup failure or damage to the components.

[0061] Step S50: Monitor whether an update event has occurred for the current applicable gear of the target voltage value; if so, update the current gear.

[0062] Each gear level corresponds to a progressively increasing voltage range, which includes a minimum voltage value and a maximum voltage value. The target voltage value contained in the voltage control signal gradually increases from the minimum voltage value of the current gear level to the maximum voltage value. The preheating voltage value is less than or equal to the minimum voltage value.

[0063] In this embodiment, the lamp voltage control method is applied to the lamp of the beauty device, and the corresponding circuit is set in the beauty device. For this beauty device, multiple power levels can be preset (or multiple modes can be set, each mode corresponding to a different power level). The differences between the power levels include differences in the boost step size and voltage range. The boost step size and voltage range are different for each power level, especially the maximum voltage value corresponding to the voltage range. For example: power level 1 corresponds to a boost step size of 1V and a maximum voltage value of 8V; power level 2 corresponds to a boost step size of 0.5V and a maximum voltage value of 10V; power level 3 corresponds to a boost step size of 2V and a maximum voltage value of 12V, etc. It is understood that the boost step size for each power level can also be set to the same value, only the voltage range for each power level can be set differently. The minimum voltage value is generally the preheating voltage value corresponding to the start-up of the beauty device. It is necessary to switch to a relatively suitable power level according to the characteristics of the lamp, such as by manually inputting a power level switching command. Based on the corresponding power level, the lamp voltage control method is then applied to determine the maximum output voltage that the power supply system can provide for the lamp.

[0064] It should be noted that step S40 is the lamp preheating step, and step S50 is the gear update step. In practical applications, the lamp voltage control method can only respond to the gear update step after the lamp preheating step is completed. If the lamp preheating step is not completed, it is necessary to wait for the lamp preheating step to be completed before the gear update can be performed and the subsequent working mode can be entered according to the current gear. This sequence of steps can further protect the lamp and prevent circuit failure caused by directly inputting high voltage to the lamp before preheating is completed.

[0065] Step S10: Output a voltage control signal to the power supply system electrically connected to the lamp tube to control the power supply system to output power supply voltage to the lamp tube.

[0066] Step S20: Determine whether the voltage output by the power supply system to the lamp tube in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal.

[0067] Step S301: If yes, then gradually increase the target voltage value contained in the voltage control signal.

[0068] Step S303: If not, when the duration for which the power supply voltage value output by the power supply system to the lamp tube is less than the target voltage value of the voltage control signal reaches a preset duration, the target voltage value of the voltage control signal is reduced to the voltage value corresponding to the previous step of increment.

[0069] Specifically, in practical applications, when the current circuit is in a stable voltage output state, the target voltage value of the voltage control signal can be gradually increased, for example, from 6V to 7V, to control the power supply system to increase the supply voltage to the lamp from 6V to 7V. However, this increase cannot be completed immediately; the power supply system needs a stabilization period. This stabilization period corresponds to the aforementioned preset duration. If the power supply system fails to meet the requirement of increasing the supply voltage from 6V to 7V within the given preset duration, it indicates that the current circuit does not support increasing the lamp's supply voltage from 6V to 7V. The current circuit's hardware environment only supports stabilizing the lamp's supply voltage to 6V and cannot increase it further to the higher voltage stage of 7V. Therefore, if the preset duration is reached and the lamp's supply voltage still cannot meet the requirement of increasing from 6V to 7V, it reverts to the previous voltage stage of 6V. The maximum output voltage that the power supply system can provide to the connected lamp is the voltage value before the increase, which is 6V (this voltage value has already passed the stability verification of the current power supply system's supply voltage to the lamp in the previous step).

[0070] The technical solution of this embodiment starts a preheating mode for the lamp tube before starting the working mode, which improves the safety of the circuit and further extends the service life of the lamp tube. At the same time, it also reserves a stabilization time for the output voltage of the power supply system, so as to further improve the accuracy of determining the maximum output voltage that the power supply system can provide for different lamp tubes.

[0071] It should be noted that in the foregoing embodiments of this application, the lamp tube is preferably a halogen lamp. Specifically, the resistance of a halogen lamp in a cold state is much lower than that in a steady state, so providing a small voltage for preheating is essential for halogen lamps. Whenever a halogen lamp is connected to the current circuit, a preheating mode is generally required. When the preheating mode is activated, a voltage control signal containing the preheating voltage value will continuously control the power supply system to output a preheating voltage to the lamp tube for a preset duration. This preheating voltage is usually a relatively low initial voltage, such as 2V. Because the preheating voltage value is low, the circuit can generally provide it directly without needing to gradually increase the voltage. In practical applications, after the user turns on the device, it usually enters standby mode. Setting it to standby automatically runs the preheating mode, preheating the lamp tube to ensure its safe use, and allowing it to quickly respond to the user's needs after preheating.

[0072] Please see Figure 3 This is a flowchart illustrating the third embodiment of the lamp voltage control method of the present invention.

[0073] Compared with the second embodiment of the lamp voltage control method, this embodiment adds a processing step when there is a conflict between the maximum voltage value corresponding to the current gear and the current power supply voltage of the power supply system after the current circuit updates the gear in response to the gear update event.

[0074] In this embodiment, the lamp voltage control method includes:

[0075] Step S50: Monitor whether an update event has occurred for the current applicable gear of the target voltage value; if so, update the current gear.

[0076] Each gear corresponds to a progressively increasing voltage range, which includes a minimum voltage value and a maximum voltage value. The target voltage value contained in the voltage control signal gradually increases from the minimum voltage value of the current gear to the maximum voltage value.

[0077] Specifically, updating the current voltage setting means updating the voltage range corresponding to the gradual increase of the target voltage value. This voltage range includes the minimum voltage value and the maximum voltage value, with the target voltage value gradually increasing from the minimum voltage value of the current setting to the maximum voltage value.

[0078] Specifically, the preheating process corresponds to the preheating mode, and the gradual voltage increase process corresponds to the operating mode. Switching from the preheating mode to the operating mode, specifically to level 1, is called "upgrading," which requires a gradual voltage increase. Switching from level 2 to level 1 of the operating mode is called "downgrading." The difference in levels can be a difference in the voltage increase rate or a difference in the target voltage increase range. Depending on the characteristics of the lamp, each level may have a different voltage increase rate and a different target voltage increase range, or the same voltage increase rate for each level may have a different target voltage increase range.

[0079] Step S60: Determine whether the maximum voltage value corresponding to the current gear is greater than the power supply voltage value output by the current power supply system to the lamp tube.

[0080] Step S701: If yes, then determine that the target voltage value is gradually increased starting from the current power supply voltage value output to the lamp tube by the current power supply system.

[0081] Specifically, for example, if the circuit updates the voltage level in response to a voltage level update event, from level 2 to level 3, where the voltage range for level 2 is 2V-8V and for level 3 it is 2V-12V, and the current power supply system outputs 9V to the lamp, this 9V has already been verified by the lamp voltage control method. Therefore, it's unnecessary to start from the minimum voltage of level 3 (2V) and incrementally increase the voltage at each step. Instead, the current power supply system output of 9V to the lamp can be used as the starting point for incrementally increasing the target voltage. Subsequently, the target voltage value in the voltage control signal is gradually increased according to the increment step size to control the power supply system to gradually increase the voltage output to the lamp.

[0082] Step S702: If not, output a voltage control signal to the power supply system to reduce the target voltage value to the maximum voltage value.

[0083] Specifically, for example, if the current circuit updates the power level in response to a power level update event, it might downgrade from power level 3 to power level 2. The voltage range for power level 3 is 2V-12V, and for power level 2 it's 2V-8V. If the current power supply system outputs 9V to the lamp, then the maximum voltage value of 8V for the current power level 2 is less than the 9V output. Therefore, the power supply voltage to the lamp needs to be reduced to the maximum voltage value of 8V for the current power level. Since the current power supply voltage to the lamp is 9V, it means that both 9V and the previous 8V have passed the lamp voltage control method verification, and the current circuit can guarantee the stability of the 8V output voltage.

[0084] It should be noted that, in the specific embodiment, step S701 is the processing step for upshifting, and step S702 is the processing step for downshifting. Steps S701 and S702 are not sequential; either step may be performed.

[0085] Step S10: Output a voltage control signal to the power supply system electrically connected to the lamp tube to control the power supply system to output power supply voltage to the lamp tube.

[0086] Step S20: Determine whether the voltage output by the power supply system to the lamp tube in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal.

[0087] Step S301: If yes, then gradually increase the target voltage value contained in the voltage control signal.

[0088] Step S302: If not, reduce the target voltage value of the voltage control signal to the voltage value corresponding to the previous step when it was increased.

[0089] The technical solution of this embodiment refines the processing steps of the lamp voltage control method when dealing with gear update events of upshifting and downshifting, ensuring the executability of the lamp voltage control method and its wide applicability.

[0090] The following examples will be used to specifically illustrate the logical principle of the lamp voltage control method of the present invention.

[0091] In this embodiment, 2V is set as the preheating voltage value. The power supply system can use 2V to preheat the lamp tube, with a minimum preheating time of 5 seconds, and can output power voltage to the lamp tube starting from 2V. After the preheating mode is completed, the system continuously monitors the update event of the currently applicable gear and responds promptly to ensure that the current gear is updated in real time. Once the operating mode is entered (this operating mode corresponds to the voltage control signal controlling the power supply system to gradually increase the output voltage of the lamp tube), the power supply voltage to the lamp tube is gradually increased according to the latest gear, with a step size of 1V and a maximum voltage value of 12V corresponding to the gradually increasing voltage range. If the voltage at the current stage can be stabilized during the gradual increase, the increase continues; if it cannot be stabilized, the voltage is reduced to the voltage value of the previous stage.

[0092] The stability of the voltage at any given stage is determined by whether the output voltage of the power supply system matches the target voltage value of the voltage control signal. If they match, the voltage is stable; otherwise, it is unstable. Typically, each increment corresponds to one stage, for example, 6V is one stage, 7V is another stage. When the target voltage is 7V, if the output voltage of the power supply system reaches 7V, it is considered stable in the 7V stage. If the output voltage of the power supply system is lower than 7V, it is considered unstable in the 7V stage, or not in the 7V stage.

[0093] It should be noted that this embodiment uses a halogen lamp as an example. However, this lamp voltage control method is not limited to halogen lamps. It can be used for any lamp with low temperature and low resistance, or for lamps whose parameters vary widely due to manufacturing process limitations, in order to quickly and accurately determine the maximum output voltage that the power supply system can provide for different lamps.

[0094] The following are embodiments of the lamp voltage control circuit provided by the present invention. The embodiments of the lamp voltage control circuit and the embodiments of the lamp voltage control method described above belong to the same concept. Details not fully described in the embodiments of the lamp voltage control circuit can be found in the embodiments of the lamp voltage control method described above.

[0095] Please see Figure 4 This is a schematic diagram of the module structure of the lamp voltage control circuit 10 in an embodiment of the present invention.

[0096] In this embodiment, the lamp voltage control circuit 10 is electrically connected to one end of the power supply system 20, and the other end of the power supply system 20 is electrically connected to the lamp 30 of the beauty device. The lamp voltage control circuit 10 includes:

[0097] The control unit 101 is used to output a voltage control signal to the power supply system 20 which is electrically connected to the lamp tube, so as to control the power supply system 20 to output a power supply voltage to the lamp tube 30;

[0098] The judgment unit 102 is used to determine whether the voltage output by the power supply system 20 to the lamp tube 30 in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal;

[0099] The processing unit 103 is configured to gradually increase the target voltage value contained in the voltage control signal when the voltage output by the power supply system 20 to the lamp 30 in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal; and to decrease the target voltage value of the voltage control signal to the voltage value corresponding to the previous step when the voltage output by the power supply system 20 to the lamp 30 in response to the voltage control signal is not equal to the target voltage value contained in the voltage control signal.

[0100] The technical solution of this embodiment can quickly and accurately determine the maximum output voltage that the power supply system 20 can provide for different lamp tubes 30. The entire lamp tube voltage control circuit 10 is safe, reliable and low in cost.

[0101] Please see Figure 5 and Figure 6 This is a schematic diagram of the module structure of the first and second embodiments of the present invention, which uses the lamp voltage control circuit 10 to control the voltage of the lamp 30.

[0102] For example, in this embodiment, the lamp voltage control circuit 10 further includes:

[0103] An update unit is used to monitor whether an update event has occurred for the gear currently applicable to the target voltage value; if so, the current gear is updated; wherein, each gear corresponds to a progressively increasing voltage range, the voltage range including a minimum voltage value and a maximum voltage value, and the target voltage value contained in the voltage control signal progressively increases from the minimum voltage value of the current gear to the maximum voltage value.

[0104] For example, in this embodiment, the lamp voltage control circuit 10 further includes:

[0105] The preheating unit is used to continuously output a voltage control signal containing a preheating voltage value to the power supply system 20 for a preset duration, so as to control the power supply system 20 to output a preheating voltage to the lamp tube 30; the preheating voltage value is less than or equal to the minimum voltage value.

[0106] For example, in this embodiment, the lamp voltage control circuit 10 further includes:

[0107] The adjustment unit is used to determine whether the maximum voltage value corresponding to the current gear is greater than the power supply voltage value output by the current power supply system 20 to the lamp tube 30; if so, it determines that the power supply voltage value output by the current power supply system 20 to the lamp tube 30 is the starting point for gradually increasing the target voltage value; if not, it outputs a voltage control signal to the power supply system 20 to reduce the target voltage value to the maximum voltage value.

[0108] Further, reducing the target voltage value of the voltage control signal to the voltage value corresponding to the previous increment includes:

[0109] When the power supply voltage value output by the power supply system 20 to the lamp tube 30 is less than the target voltage value of the voltage control signal for a preset duration, the target voltage value of the voltage control signal is reduced to the voltage value corresponding to the previous step of increment.

[0110] Furthermore, the power supply system 20 includes a power supply 202 and a power drive module 201. The voltage output terminal of the power drive module 201 is electrically connected to the lamp tube 30, the voltage input terminal of the power drive module 201 is electrically connected to the power supply 202, and the control signal input terminal of the power drive module 201 is also electrically connected to the lamp tube voltage control circuit 10.

[0111] Specifically, the power drive module 201 is responsible for converting the AC or DC power from the power supply 202 into the appropriate voltage or current required by the electronic device.

[0112] Specifically, the voltage output terminal of the power drive module 201 is electrically connected to the halogen lamp tube 301, the voltage input terminal is electrically connected to the power supply 202, and the control signal input terminal of the power drive module 201 is also electrically connected to the lamp tube voltage control circuit 10.

[0113] Furthermore, the power drive module 201 is a DC-DC converter.

[0114] Specifically, a DC-DC (Direct Current) converter is an electronic device used to convert a DC power supply voltage into another DC power supply voltage of different magnitude or nature. DC-DC converters function as both power converters and power transmitters.

[0115] The following are embodiments of the beauty device provided by the present invention. The embodiments of the beauty device and the embodiments of the lamp voltage control method and control circuit described above belong to the same concept. Details not fully described in the embodiments of the beauty device can be found in the embodiments of the lamp voltage control method and control circuit described above.

[0116] In this embodiment, a beauty device includes a beauty device body and a lamp tube disposed within the beauty device body, the lamp tube being controlled by the lamp tube voltage control circuit described above.

[0117] The technical solution in this embodiment can quickly and accurately determine the maximum output voltage that the power supply system can provide for different lamp tubes. The entire beauty device is highly safe, reliable, and low in cost.

[0118] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or modules may be electrical, mechanical, or other forms.

[0119] The modules described as separate components may or may not be physically separate. Similarly, the components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0120] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0121] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0122] The above are only some or preferred embodiments of the present invention. Neither the text nor the drawings should limit the scope of protection of the present invention. All equivalent structural transformations made using the content of the present invention's specification and drawings under the overall concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A method for controlling the voltage of a lamp tube, applied to a lamp tube of a beauty instrument, characterized in that, include: Output a voltage control signal to the power supply system electrically connected to the lamp tube to control the power supply system to output a power supply voltage to the lamp tube; Determine whether the voltage output by the power supply system to the lamp in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal; If yes, then the target voltage value contained in the voltage control signal is gradually increased; if no, then the target voltage value of the voltage control signal is decreased to the voltage value corresponding to the previous increase.

2. The lamp voltage control method according to claim 1, characterized in that, Before outputting a voltage control signal to the power supply system electrically connected to the lamp tube, the method further includes: Monitor whether an update event has occurred for the currently applicable gear level of the target voltage value; if so, update the current gear level. Each gear level corresponds to a progressively increasing voltage range, which includes a minimum voltage value and a maximum voltage value. The target voltage value contained in the voltage control signal gradually increases from the minimum voltage value of the current gear level to the maximum voltage value.

3. The lamp voltage control method according to claim 2, characterized in that, Before executing the output voltage control signal to the power supply system electrically connected to the lamp, the method further includes: A voltage control signal containing a preheating voltage value is continuously output to the power supply system for a preset duration to control the power supply system to output a preheating voltage to the lamp tube; the preheating voltage value is less than or equal to the minimum voltage value.

4. The lamp voltage control method according to claim 2, characterized in that, Also includes: Determine whether the maximum voltage value corresponding to the current gear is greater than the power supply voltage value output by the current power supply system to the lamp tube; If so, then the starting point for gradually increasing the target voltage value is determined to be the current power supply voltage value output to the lamp tube by the current power supply system. If not, a voltage control signal is output to the power supply system to reduce the target voltage value to the maximum voltage value.

5. The lamp voltage control method of claim 1, wherein The reduction of the target voltage value of the voltage control signal to the voltage value corresponding to the previous increment includes: When the power supply voltage output by the power supply system to the lamp tube is less than the target voltage value of the voltage control signal for a preset duration, the target voltage value of the voltage control signal is reduced to the voltage value corresponding to the previous step of increment.

6. The lamp voltage control method according to any one of claims 1 to 5, characterized in that, The lamp is a halogen lamp.

7. A lamp voltage control circuit, characterized by The lamp voltage control circuit is electrically connected to one end of the power supply system, and the other end of the power supply system is electrically connected to the lamp of the beauty device. The lamp voltage control circuit includes: The control unit is used to output a voltage control signal to the power supply system electrically connected to the lamp tube, so as to control the power supply system to output a power supply voltage to the lamp tube; The judgment unit is used to determine whether the voltage output by the power supply system to the lamp tube in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal; The processing unit is configured to: when the voltage output by the power supply system to the lamp in response to the voltage control signal is equal to the target voltage value contained in the voltage control signal, gradually increase the target voltage value contained in the voltage control signal; and when the voltage output by the power supply system to the lamp in response to the voltage control signal is not equal to the target voltage value contained in the voltage control signal, decrease the target voltage value of the voltage control signal to the voltage value corresponding to the previous step of increment.

8. The lamp voltage control circuit of claim 7, wherein, The power supply system includes a power supply and a power drive module. The voltage output terminal of the power drive module is electrically connected to the lamp tube, the voltage input terminal of the power drive module is electrically connected to the power supply, and the control signal input terminal of the power drive module is also electrically connected to the lamp tube voltage control circuit.

9. The lamp voltage control circuit of claim 8, wherein, The power drive module is a DC-DC converter.

10. A cosmetic device, characterized by, It includes a beauty device body and a lamp tube disposed within the beauty device body, wherein the lamp tube is controlled by a lamp tube voltage control circuit as described in any one of claims 7 to 9.

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