CN214314597U - Appearance voltage protection circuit and appearance that moults - Google Patents
Appearance voltage protection circuit and appearance that moults Download PDFInfo
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- CN214314597U CN214314597U CN202022559473.9U CN202022559473U CN214314597U CN 214314597 U CN214314597 U CN 214314597U CN 202022559473 U CN202022559473 U CN 202022559473U CN 214314597 U CN214314597 U CN 214314597U
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- 238000004146 energy storage Methods 0.000 claims abstract description 118
- 238000001514 detection method Methods 0.000 claims abstract description 71
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 13
- 210000004209 hair Anatomy 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000001131 transforming effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 14
- 238000004804 winding Methods 0.000 description 8
- 210000003491 skin Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003796 beauty Effects 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035617 depilation Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 210000003780 hair follicle Anatomy 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 208000035824 paresthesia Diseases 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model provides an appearance voltage protection circuit and appearance that moults, the appearance voltage protection circuit that moults includes voltage detection module, drive module and energy storage module, and voltage detection module is connected with energy storage module and drive module electricity, and voltage detection module detects energy storage module's voltage and transmits first voltage signal and gives drive module, and drive module is according to whether charging of first voltage signal control energy storage module. Through making voltage detection module detect energy storage module's voltage to transmit energy storage module's voltage signal to drive module, whether charge by drive module control energy storage module, voltage detection circuit and drive module constitute hardware protection circuit structure, when software out of control, still accessible hardware voltage protection circuit makes energy storage module stop charging, in order to avoid energy storage module voltage too high to damage control system, has promoted the security performance of system.
Description
Technical Field
The utility model relates to an electronic equipment technical field especially relates to an appearance voltage protection circuit and appearance that moults.
Background
IPL (Intense Pulsed Light), also called photon unhairing, is a novel unhairing technology and cosmetic method in the market, which utilizes the special wavelength and photo-thermal effect of Intense Pulsed Light to destroy hair follicles and achieve the effect of permanent unhairing, has the advantages of high speed, good effect, high safety, no side effect, no pain and the like, and is widely welcomed in the cosmetic and medical industries.
The photon appearance of moulting adopts the IPL fluorescent tube to give out light, and the IPL fluorescent tube requires external controllable power and trigger, when the photon appearance of moulting is lighted, needs the power stop work, and the trigger in the circuit produces a high frequency high voltage signal and adds in the both ends of IPL fluorescent tube, makes the gas excitation ionization in the fluorescent tube produce arc discharge to send out strong pulse light. When the polishing is completed, the power supply is required to work immediately and quickly charge the high-voltage large electrolytic capacitor to prepare for the next polishing. The control circuit of the depilating apparatus limits the voltage within a safe voltage to ensure the safety of the system. The problem of overhigh voltage of an electrolytic capacitor caused by failure of a voltage limiting circuit easily occurs in the existing circuit design scheme, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an appearance voltage protection circuit and the appearance that moults can avoid energy storage module voltage too high to damage control system, the lift system security performance.
For realizing the purpose of the utility model, the utility model provides a following technical scheme:
in a first aspect, the utility model provides an appearance voltage protection circuit moults, the appearance voltage protection circuit that moults includes: the voltage detection module is electrically connected with the energy storage module and the driving module, the voltage detection module detects the voltage of the energy storage module and transmits a first voltage signal to the driving module, and the driving module controls whether the energy storage module is charged or not according to the first voltage signal.
In one embodiment, the voltage protection circuit of the hair removal device further comprises a control module, the voltage detection module comprises a software voltage detection unit and a hardware voltage detection unit, the software voltage detection unit is electrically connected with the energy storage module and the control module, the software voltage detection unit detects the voltage of the energy storage module and transmits a second voltage signal to the control module, and the control module controls whether the energy storage module is charged according to the second voltage signal; the hardware voltage detection unit is electrically connected with the energy storage module and the driving module, and detects the voltage of the energy storage module and transmits the first voltage signal to the driving module.
In one embodiment, the hardware voltage detection unit includes a first resistor and a second resistor, one end of the first resistor is connected to one end of the second resistor, the other end of the first resistor is electrically connected to the energy storage module to perform sampling detection on the voltage of the energy storage module, and a common end of the first resistor and the second resistor is electrically connected to the driving module to transmit the first voltage signal to the driving module.
In one embodiment, the driving module includes a comparator, a positive input end of the comparator is used for inputting a reference voltage, a negative input end of the comparator is connected to the hardware voltage detection unit and is used for inputting the first voltage signal, and the comparator compares the reference voltage with the first voltage signal and outputs a driving signal to control whether the energy storage module is charged.
In one embodiment, the software voltage detection unit includes a third resistor and a fourth resistor, the control module includes a digital-to-analog conversion interface, one end of the third resistor is connected to one end of the fourth resistor, the other end of the third resistor is electrically connected to the energy storage module to perform sampling detection on the voltage of the energy storage module, and a common end of the third resistor and the fourth resistor is electrically connected to the digital-to-analog conversion interface to transmit a second voltage signal to the control module.
In one embodiment, the control module is provided with an internal software reference voltage, when the second voltage signal is smaller than the internal software reference voltage, the control module transmits a third voltage signal to the driving module, the driving module controls the energy storage module to charge, when the second voltage signal is greater than or equal to the internal software reference voltage, the control module transmits a fourth voltage signal to the driving module, and the driving module controls the energy storage module to stop charging.
In one embodiment, the energy storage module includes a switching tube, a transformer and an electrolytic capacitor, which are electrically connected in sequence, the switching tube is electrically connected to the driving module, and when the driving module outputs a driving signal or turns off the driving, the switching tube is periodically turned on and off, and the transformer periodically charges the electrolytic capacitor.
In one embodiment, the voltage protection circuit of the hair removal device further includes a first power converter for transforming and rectifying the power voltage and supplying power to the control module, and a second power converter for transforming and rectifying the power voltage and supplying power to the driving module.
In a second aspect, the present invention further provides a depilating device, the depilating device includes a trigger module, a light source and a depilating device voltage protection circuit as in any one of the embodiments of the first aspect, the trigger module is electrically connected to the control module, so as to output a contact signal to the control module, the light source is electrically connected to the energy storage module, and the energy storage module is right to discharge electricity from the light source, so as to emit light from the light source.
In one embodiment, the depilating device further comprises a refrigeration module and a display module, wherein the refrigeration module and the display module are electrically connected with the control module, the refrigeration module is used for cooling and refrigeration, and the display module is used for displaying the working state of the depilating device.
Through making voltage detection circuit detect energy storage module's voltage to transmit energy storage module's voltage signal to drive module, whether charge by drive module control energy storage module, voltage detection circuit and drive module constitute hardware protection circuit structure, when software out of control, still accessible hardware voltage protection circuit makes energy storage module stop charging, thereby has avoided energy storage module voltage too high to damage control system, has promoted the security performance of system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of a voltage protection circuit of a depilation instrument;
FIG. 2 is a schematic diagram of a voltage protection circuit of an epilating apparatus according to another embodiment;
FIG. 3 is a circuit diagram of a voltage detection module according to an embodiment;
fig. 4 is a schematic diagram of a control circuit of an epilating apparatus according to another embodiment.
Description of reference numerals:
100-a voltage detection module; 110-software voltage detection unit; 120-hardware voltage detection unit;
200-a drive module;
300-an energy storage module; 310-a switching tube; 320-a transformer; 330-electrolytic capacitance;
400-a control module;
500-a light source;
610-a first power converter; 620-a second power converter; 630-a third power converter;
700-a trigger module; 701-skin-feel element; 702-a polishing unit;
800-a refrigeration module; 900-display module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Please refer to fig. 1 and fig. 2, the present invention provides a voltage protection circuit for an epilating apparatus, the voltage protection circuit for an epilating apparatus comprises a voltage detection module 100, a driving module 200 and an energy storage module 300, the voltage detection module 100 is electrically connected with the energy storage module 300 and the driving module 200, the voltage detection module 100 detects the voltage of the energy storage module 300 and transmits a first voltage signal to the driving module 200, and the driving module 200 controls whether the energy storage module 300 is charged according to the first voltage signal.
The circuit of the depilating instrument adopts the IPL lamp tube to emit strong pulsed light to achieve the purpose of depilating, high-voltage direct current is required to pass through the IPL lamp tube for lighting, therefore, low-voltage direct current needs to be converted into high-voltage direct current corresponding to the IPL lamp tube to supply power to the IPL lamp tube, meanwhile, in order to ensure safety, the high-voltage direct current needs to be limited within the safe voltage range of 300V-600V, and the safe voltage in the embodiment is 400V. In the control circuit of the hair removal device, the energy storage module 300 is arranged, the energy storage module 300 is charged firstly, the voltage of the energy storage module 300 is increased to 400V, and then the 400V high voltage of the energy storage module 300 discharges to the IPL lamp tube to enable the IPL to emit strong pulse light. The voltage of the energy storage module 300 continuously rises during the charging process, and an overvoltage protection circuit is required to limit the voltage of the energy storage module 300 to be below 400V in order to prevent the circuit from being damaged when the voltage rises too high. The voltage protection circuit of the hair removal instrument of the embodiment is provided with the voltage detection module 100 and the driving module 200, one end of the voltage detection module 100 is electrically connected with the energy storage module 300, thereby sampling and detecting the voltage of the energy storage module 300 and generating a first voltage signal, the other end of the voltage detection module 100 is electrically connected with the driving module 200, so that the driving module 200 receives the first voltage signal, when the voltage value represented by the first voltage signal is less than 400V, the driving module 200 drives the energy storage module 300 to charge, when the voltage value represented by the first voltage signal is more than or equal to 400V, the driving module 200 closes the driving, the energy storage module 300 stops charging and discharges to the IPL lamp tube, meanwhile, the voltage of the energy storage module 300 is gradually reduced along with the discharging process, thereby ensuring that the system voltage is always within the safety range.
The voltage of the energy storage module 300 is detected in real time by the voltage detection circuit 100, the voltage of the energy storage module 300 is converted into a first voltage signal and transmitted to the driving module 200, and the driving module 200 controls whether the energy storage module 300 is charged according to the first voltage signal. Because the voltage detection circuit 100 and the driving module 200 form a hardware voltage protection circuit, when the software is out of control, the energy storage module 300 can still stop charging through the hardware voltage protection circuit, thereby preventing the control system from being damaged by the overhigh voltage of the energy storage module 300 and improving the safety performance of the system.
In one embodiment, referring to fig. 1 and fig. 2, the voltage protection circuit of the hair removal device further includes a control module 400, the voltage detection module 100 includes a software voltage detection unit 110 and a hardware voltage detection unit 120, the software voltage detection unit 110 is electrically connected to the energy storage module 300 and the control module 400, the software voltage detection unit 110 detects the voltage of the energy storage module 300 and transmits a second voltage signal to the control module 400, and the control module 400 controls whether the energy storage module 300 is charged according to the second voltage signal. Specifically, as shown in fig. 2, the control module 400 includes an MCU (micro controller Unit) chip, the MCU chip is internally integrated with a plurality of functions and peripherals such as I/O, A/D, a timer and a counter, and the MCU chip may adopt different models, such as a 51-series single chip microcomputer and a PIC-series single chip microcomputer, as required. In this embodiment, an MCU chip of ST (intentionally chosen semiconductor) is used, which has higher control accuracy. The software voltage detection unit 110 is connected to an a/D interface of the MCU chip, the software voltage detection unit 110 generates a second voltage signal after detecting the voltage of the energy storage module 300, the second voltage signal is an analog signal, and the second voltage signal is converted into a digital signal and provided to an internal circuit of the MCU chip after being transmitted to an a/D port of the MCU chip. When the voltage value represented by the second voltage signal is less than 400V, the control module 400 controls the energy storage module 300 to charge, and when the voltage value represented by the second voltage signal is greater than or equal to 400V, the control module 400 controls the energy storage module 300 to stop charging.
The hardware voltage detection unit 120 is electrically connected to the energy storage module 300 and the driving module 200, and the hardware voltage detection unit 120 detects a voltage of the energy storage module 300 and transmits a first voltage signal to the driving module 200. In this embodiment, the driving module 200 employs a PFC (Power Factor Correction) chip, and a voltage limiting circuit is integrated on the PFC chip and connected to an external circuit through a VSENSE interface. The hardware voltage detection unit 120 is electrically connected to the VSENSE interface, and the first voltage signal is transmitted to the voltage limiting circuit on the PFC chip through the VSENSE interface. The software voltage detection unit 110 is arranged to sample and detect the voltage of the energy storage module 300 to generate a second voltage signal, and transmit the second voltage signal to the control module 400, and then the control module 400 controls the circuit structure of whether the energy storage module 300 is charged, so that a software voltage protection circuit is formed. Meanwhile, the hardware voltage detection unit 120 is arranged to sample and detect the voltage of the energy storage module 300 to generate a first voltage signal and transmit the first voltage signal to the driving module 200, and then the driving module 200 controls the circuit structure of whether the energy storage module 300 is charged or not, so that a hardware voltage protection circuit is formed. By adopting a dual voltage protection circuit structure combining a software voltage protection circuit and a hardware voltage protection circuit, when software is out of control, the energy storage module 300 can be controlled to stop charging through the hardware voltage protection circuit, so that the voltage of the energy storage module 300 is always limited within a safe voltage, and the safety performance of the system is improved.
In an embodiment, referring to fig. 3, the hardware voltage detecting unit 120 includes a first resistor R1 and a second resistor R2, one end of the first resistor R1 is connected to one end of the second resistor R2, the other end of the first resistor R1 is electrically connected to the energy storage module 300 for sampling and detecting the voltage of the energy storage module 300, and a common end of the first resistor R1 and the second resistor R2 is electrically connected to the driving module 200 for transmitting the first voltage signal to the driving module 200. Specifically, the voltage of the energy storage module 300 is represented by U1, and the first voltage signal is represented by U2When the voltage U1 of the energy storage module 300 is input to the hardware voltage detecting unit 120, the hardware voltage detecting unit 120 outputs a first voltage signal U2, which is represented by a resistance voltage dividing formula:
it can be seen that the voltage of the energy storage module 300 is:
thereby implementing the sampling detection function of the hardware voltage detection unit 120. The hardware voltage detection unit 120 is formed by arranging the first resistor R1 and the second resistor R2, the voltage of the energy storage module 300 can be obtained according to the first voltage signal U2 by using a resistor voltage division principle, and the detection circuit is simple in structure and reliable in operation.
In one embodiment, referring to fig. 3, the driving module 200 includes a comparator, a positive input end D1 of the comparator is used for inputting a reference voltage, a negative input end D2 of the comparator is connected to the hardware voltage detecting unit 120 and is used for inputting the first voltage signal U2, and the comparator compares the reference voltage with the first voltage signal U2 and outputs a driving signal to control whether the energy storage module 300 is charged. In this embodiment, the reference voltage is 2.5V, the negative input terminal is connected to the hardware voltage detection unit 120 through the VSENSE pin, the hardware voltage detection unit 120 inputs the first voltage signal U2 to the comparator through the VSENSE pin, when the first voltage signal U2 is smaller than the reference voltage 2.5V, the driving module 200 outputs a driving signal to control the energy storage module 300 to charge, the voltage of the energy storage module 300 rises accordingly, when the voltage of the energy storage module 300 rises, the voltage value of the second voltage signal input to the VSENSE pin also rises, when the voltage of the energy storage module 300 reaches 400V, the voltage input to the VSENSE pin reaches the reference voltage 2.5V, at this time, the driving module 200 turns off the driving, the energy storage module 300 stops charging, and thus the purpose of limiting the voltage of the energy storage module 300 to continue rising is achieved.
In one embodiment, referring to fig. 3, the software voltage detecting unit 110 includes a third resistor R3 and a fourth resistor R4, and the control module 400 includes a digital-to-analog conversion interfaceAnd the port A/D is electrically connected with one end of the third resistor R3 and one end of the fourth resistor R4, the other end of the third resistor R3 is electrically connected with the energy storage module 300 to perform sampling detection on the voltage of the energy storage module 300, and the common end of the third resistor R3 and the fourth resistor R4 is electrically connected with the digital-to-analog conversion interface A/D to transmit a second voltage signal to the control module 400. Specifically, the voltage of the energy storage module 300 is represented by U1, the second voltage signal is represented by U3, and when the voltage U1 of the energy storage module 300 is input to the software voltage detection unit 110, the software voltage detection unit 110 outputs the second voltage signal U3, which is represented by a resistance voltage division formula:
it can be seen that the voltage of the energy storage module 300 is:
thereby implementing the sampling detection function of the software voltage detection unit 110. The software voltage detection unit 110 is formed by arranging the third resistor R3 and the fourth resistor R4, the voltage of the energy storage module 300 can be obtained according to the second voltage signal U3 by using the resistor voltage division principle, and the detection circuit is simple in structure and reliable in operation.
In one embodiment, referring to fig. 2 and 3, the control module 400 has an internal software reference voltage, when the second voltage signal U3 is less than the internal software reference voltage, the control module 400 transmits a third voltage signal to the driving module 200, the driving module 200 controls the energy storage module 300 to charge, and when the second voltage signal U3 is greater than or equal to the internal software reference voltage, the control module 400 transmits a fourth voltage signal to the driving module 200, and the driving module controls the energy storage module 300 to stop charging. In this embodiment, a PN1 interface, a PN2 interface, and a PN3 interface are integrated on the PFC chip, wherein the PN1 interface and the PN2 interface are input terminals of the driving module 200, the PN1 interface and the PN2 interface are respectively connected to the MCU chip, the control module 400 outputs a PWM1 signal and a PWM2 signal to the driving module 200 through the PN1 interface and the PN2 interface, and the PN3 interface is an output terminal of the driving module 200 and is configured to output a driving signal. When the second voltage signal U3 is less than the internal software reference voltage, the control module 400 transmits a third voltage signal to the driving module 200, the PWM1 signal is at a low level, and the PFC chip outputs a driving signal to the energy storage module 300 through the PN3 interface to drive the energy storage module 300 to charge. When the second voltage signal U3 is greater than or equal to the internal software reference voltage, the control module 400 transmits the fourth voltage sub-signal to the driving module 200, the PWM1 signal is at a high level, and the PFC chip turns off the driving, so that the energy storage module 300 stops charging.
In one embodiment, referring to fig. 2 and 3, the energy storage module 300 includes a switching tube 310, a transformer 320 and an electrolytic capacitor 330, which are electrically connected in sequence, the switching tube 310 is electrically connected to the driving module 200, and when the driving module 200 outputs a driving signal or turns off the driving according to the first voltage signal U2 or the second voltage signal U3, the switching tube 310 is periodically turned on and off, and the transformer 320 periodically charges the electrolytic capacitor 330. Specifically, the primary winding of the transformer 320 is connected to a power supply, the secondary winding is connected to the electrolytic capacitor 330, when the voltage value indicated by the first voltage signal U2 or the second voltage signal U3 is greater than or equal to 400V, the driving module 200 turns off the driving, the switching tube 310 is in a conducting state, at this time, the power supply stores energy to the primary winding of the transformer 320, the voltage in the primary winding rises, the secondary winding does not work, and the voltage of the electrolytic capacitor 330 falls. When the voltage value represented by the first voltage signal U2 or the second voltage signal U3 is less than 400V, the driving module 200 outputs a driving signal to drive the switching tube 310 to turn off, the primary winding of the transformer 320 transfers energy to the secondary winding, the secondary winding charges the electrolytic capacitor 330, the voltage of the electrolytic capacitor 330 rises until the voltage across the electrolytic capacitor rises to 400V to meet the discharging requirement of the IPL lamp tube, the software voltage detection unit 110 and the hardware voltage detection unit 120 continue to detect the voltage of the electrolytic capacitor 330 to output the first voltage signal U2 or the second voltage signal U3, and repeat the above control processes, so that the switching tube 310 is periodically turned on and off, and the transformer 320 periodically charges the electrolytic capacitor 330. It is understood that in other embodiments, the transformer 320 may also raise the voltage of the electrolytic capacitor 330 to other specified voltage values according to the requirement of the light source 500, and the switching tube 310 may be any switching device with high voltage resistance, such as a MOS tube, a triode, and the like. The energy storage module 300 is formed by combining the switch tube 310, the transformer 320 and the electrolytic capacitor 330, the control of charging and discharging of the electrolytic capacitor 330 can be realized by controlling the on-off of the switch tube 310 through the driving module 200, and the control mode is simple and sensitive in response.
In one embodiment, referring to fig. 2 and 4, the voltage protection circuit of the hair removal device further includes a first power converter 610 and a second power converter 620, the first power converter 610 is electrically connected to the power supply and control module 400 for supplying power to the control module 400 after transforming and rectifying the power supply voltage, and the second power converter 620 is electrically connected to the power supply and driving module 200 for supplying power to the driving module 200 after transforming and rectifying the power supply voltage. In this embodiment, the first power converter 610 and the second power converter 620 both use LDO (low drop out regulator), which has the advantages of low cost, low noise and low static current. Specifically, the first power converter 610 steps down and rectifies the 24V power voltage to convert the 24V power voltage into the operating voltage of the MCU chip of 3.3V, and the second power converter 620 steps down and rectifies the 24V power voltage to convert the 24V power voltage into the operating voltage of the PFC chip of 15V. It can be understood that the types of the first power converter 610 and the second power converter 620 are respectively selected according to the circuits of the control module 400 and the driving module 200 which are correspondingly connected, and when the operating voltage of the chip selected by the control module 400 and the driving module 200 is other voltage values, the first power converter 610 and the second power converter 620 can select a boost converter, a buck converter, and the like of the corresponding types as needed. The first power converter 610 and the second power converter 620 are arranged to convert the power voltage so as to meet the working voltage of the control module 400 and the driving module 200, and power supplies with different sizes do not need to be selected for different modules, so that the cost is saved, and the application range of the circuit is expanded.
Referring to fig. 2 and 4, the present invention further provides a depilating device, which can be a portable depilating device, or a beauty treatment device for depilating or improving skin defects for a beauty treatment facility. The epilating apparatus comprises a triggering module 700, a light source 500 and the voltage protection circuit of the epilating apparatus of any of the above embodiments, the triggering module 700 is electrically connected with the control module 400 to output a contact signal to the control module 400, the light source 500 is electrically connected with the energy storage module 300, and the energy storage module 300 discharges the light source 500 to make the light source emit light. Specifically, as shown in fig. 2, the trigger module 700 includes a skin-touch unit 701 and a lighting unit 702, and the skin-touch unit 701 is electrically connected to an I/O port of the control module 400. The skin-sensing unit 701 includes a touch chip, the lighting unit 702 includes a lighting key, when the touch chip senses that the depilating apparatus is fully contacted with the skin, a contact signal is transmitted to the I/0 interface of the control module 400, at this time, the lighting key is pressed, the control module 400 transmits a lighting signal to the driving module 200, and the driving module 200 drives the energy storage module 300 to discharge the light source 500, so that the light source 500 emits light. In addition, when the skin-sensing unit 701 does not sense that the depilating apparatus is sufficiently in contact with the skin, or the light-up button is not pressed, the light source 500 does not emit light. It is understood that other forms of the lighting unit may be adopted in other embodiments, such as touch lighting, automatic timing lighting, etc. The mode of lighting is controlled by combining the skin-feel unit 701 and the lighting unit 702, and only when the contact signal and the lighting signal meet the conditions at the same time, the light source 500 emits light, so that the safety problem caused by foolproof operation, such as misoperation of children, can be avoided.
In one embodiment, referring to fig. 4, the epilating apparatus further includes a cooling module 800 and a display module 900, both the cooling module 800 and the display module 900 are electrically connected to the control module 400, the cooling module 800 is used for cooling and cooling, and the display module 900 is used for displaying the working state of the epilating apparatus. Specifically, the epilating apparatus further includes a third power converter 630, and the third power converter 630 is electrically connected to the power supply and cooling module 800 to supply power to the cooling module 800 after the power supply voltage is converted by voltage reduction. In this embodiment, the refrigeration module 800 employs a TEC (thermal cooler), and the third power converter 630 employs a DC-DC converter to convert a 24V power voltage into a 3V TEC semiconductor cooler operating voltage. When the epilating apparatus is powered on, the control module 400 outputs a cooling signal to the TEC semiconductor cooler, and the TEC semiconductor cooler starts a cooling function. The refrigeration module 800 can realize the effect of rapid refrigeration by adopting the TEC semiconductor refrigerator for refrigeration and utilizing the characteristic of very small thermal inertia of the TEC. By providing the refrigeration module 800, the heat of the IPL light can be reduced and the skin can be temporarily paralyzed to reduce the tingling sensation of hair removal.
The display module 900 is electrically connected to the control module 400 and is configured to display the operating states of the triggering module 700, the energy storage module 300, and the refrigeration module 800. Specifically, the display module 900 includes LED lamps, the triggering module 700 is in a skin contacting state and a skin non-contacting state, the energy storage module 300 is in a charging state or a discharging state, and when the refrigeration module 800 is in a refrigeration mode or a non-refrigeration mode, the control module 400 sends different control signals to the display module 900 to drive the LED lamps to display different prompt messages. It can be understood that the prompting method can be freely set according to the needs, for example, the number of the LED lamp tubes is set to be multiple, and the number of different LED lamps represents different working states; different prompting messages can also be represented by changing the color of the LED lamp. Through setting up display module 900, the user can know the operating condition of the appearance control circuit that moults at any time to combine the demand of oneself to operate it, can guarantee to polish going on smoothly that moults.
Through adding in the appearance that moults the utility model provides a voltage protection circuit, when software is out of control, still accessible hardware voltage protection circuit with energy storage module 300's voltage restriction within safe voltage 300V-600V, improved the security performance of the appearance that moults.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. An epilator voltage protection circuit, characterized in that the epilator voltage protection circuit comprises: the voltage detection module is electrically connected with the energy storage module and the driving module, the voltage detection module detects the voltage of the energy storage module and transmits a first voltage signal to the driving module, and the driving module controls whether the energy storage module is charged or not according to the first voltage signal.
2. An epilator voltage protection circuit according to claim 1, wherein the epilator voltage protection circuit further comprises a control module, the voltage detection module comprises a software voltage detection unit and a hardware voltage detection unit, the software voltage detection unit is electrically connected to the energy storage module and the control module, the software voltage detection unit detects the voltage of the energy storage module and transmits a second voltage signal to the control module, and the control module controls whether the energy storage module is charged according to the second voltage signal; the hardware voltage detection unit is electrically connected with the energy storage module and the driving module, and detects the voltage of the energy storage module and transmits the first voltage signal to the driving module.
3. An epilating apparatus voltage protection circuit according to claim 2, wherein the hardware voltage detection unit comprises a first resistor and a second resistor, one end of the first resistor is connected with one end of the second resistor, the other end of the first resistor is electrically connected with the energy storage module to sample and detect the voltage of the energy storage module, and a common end of the first resistor and the second resistor is electrically connected with the driving module to transmit the first voltage signal to the driving module.
4. A voltage protection circuit for an epilator as claimed in claim 3, wherein the driving module comprises a comparator, a positive input terminal of the comparator is used for inputting a reference voltage, a negative input terminal of the comparator is connected to the hardware voltage detection unit and is used for inputting the first voltage signal, and the comparator compares the reference voltage with the first voltage signal and outputs a driving signal to control whether the energy storage module is charged or not.
5. An epilating apparatus voltage protection circuit according to claim 2, wherein the software voltage detection unit comprises a third resistor and a fourth resistor, the control module comprises a digital-to-analog conversion interface, one end of the third resistor is connected with one end of the fourth resistor, the other end of the third resistor is electrically connected with the energy storage module to perform sampling detection on the voltage of the energy storage module, and a common end of the third resistor and the fourth resistor is electrically connected with the digital-to-analog conversion interface to transmit a second voltage signal to the control module.
6. An epilator voltage protection circuit as claimed in claim 5, wherein the control module is provided with an internal software reference voltage, the control module transmits a third voltage signal to the driving module when the second voltage signal is less than the internal software reference voltage, the driving module controls the energy storage module to charge, and the control module transmits a fourth voltage signal to the driving module when the second voltage signal is greater than or equal to the internal software reference voltage, the driving module controls the energy storage module to stop charging.
7. An epilator voltage protection circuit as claimed in claim 4, wherein the energy storage module comprises a switch tube, a transformer and an electrolytic capacitor electrically connected in sequence, the switch tube is electrically connected to the driving module, the switch tube is periodically turned on and off when the driving module outputs the driving signal or turns off the driving, and the transformer periodically charges the electrolytic capacitor.
8. An epilator voltage protection circuit as claimed in claim 2, wherein the epilator voltage protection circuit further comprises a first power converter for transforming and rectifying a power voltage to supply power to the control module and a second power converter for transforming and rectifying the power voltage to supply power to the driving module.
9. An epilating apparatus comprising an epilating apparatus voltage protection circuit according to any one of claims 1 to 8, a trigger module electrically connected to a control module of the epilating apparatus voltage protection circuit to output a contact signal to the control module, a light source electrically connected to the energy storage module, the energy storage module discharging the light source to emit light from the light source.
10. The hair removal device of claim 9, further comprising a cooling module and a display module, wherein the cooling module and the display module are electrically connected to the control module, the cooling module is configured to cool and cool, and the display module is configured to display an operating status of the hair removal device.
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| CN112311062A (en) * | 2020-11-06 | 2021-02-02 | 深圳由莱智能电子有限公司 | Appearance voltage protection circuit and appearance that moults |
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| CN112311062A (en) * | 2020-11-06 | 2021-02-02 | 深圳由莱智能电子有限公司 | Appearance voltage protection circuit and appearance that moults |
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