CN111148327B - Charging indicator lamp control device and method - Google Patents
Charging indicator lamp control device and method Download PDFInfo
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- CN111148327B CN111148327B CN201911426154.6A CN201911426154A CN111148327B CN 111148327 B CN111148327 B CN 111148327B CN 201911426154 A CN201911426154 A CN 201911426154A CN 111148327 B CN111148327 B CN 111148327B
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Abstract
The invention provides a charging indicator lamp control device and a method, which relate to the technical field of beauty and body care equipment and comprise a voltage detection circuit, a central processing unit and a display circuit, wherein the voltage detection circuit detects the indicating voltage of a lighting capacitor of a depilating instrument and sends the indicating voltage to the central processing unit; the central processing unit determines the output level of an indicator lamp driving pin of the central processing unit based on the indicating voltage, the output level is input into the display circuit, the display circuit determines the indicating state of a charging indicator lamp in the display circuit based on the output level, and under the condition that the charging indicator lamp is in a high brightness state, if the indicating voltage is in a preset range, the central processing unit controls the output level of the indicator lamp driving pin to be unchanged. The device can guarantee that when the charge indicator is in high bright state, the indicating voltage in the preset range does not change the indicating state of the charge indicator to alleviate the technical problem of charge indicator scintillation, promoted user experience.
Description
Technical Field
The invention relates to the technical field of beauty treatment and body beautification equipment, in particular to a charging indicator lamp control device and method.
Background
Photon appearance that moults usually can design a suggestion user and whether can begin the charge pilot lamp that throws light, indicates when the charge pilot lamp is low bright and is charging, indicates when the charge pilot lamp stroboscopic that the voltage of throwing light electric capacity this moment is low or too high, indicates when the charge pilot lamp is high bright that the electric capacity of throwing light is full of to suitable voltage and can throw light, and all do not allow when the charge pilot lamp is in low bright and stroboscopic and light.
In the prior art, the voltage of the light-emitting capacitor is collected in real time, and the state of the charge indicator lamp is displayed in real time according to the voltage of the light-emitting capacitor, although the charge power supply is controlled to continue to charge the light-emitting capacitor intermittently by adopting the 2.5Hz frequency after the light-emitting capacitor is fully charged, the flicker condition of the charge indicator lamp can be caused due to the influence of various uncertain factors such as the capacitance value deviation of the charge energy storage capacitor, the precision of a sampling circuit, various parasitic parameters of a switching power supply, the self loss of the circuit, the temperature and the like when a large sample is received, and the user experience is influenced.
Disclosure of Invention
The invention aims to provide a charging indicator light control device and method, which are used for solving the technical problem of poor user experience caused by flickering of a charging indicator light of a depilating apparatus in the prior art.
In a first aspect, an embodiment provides a charge indicator lamp control device, including: the voltage detection circuit, the central processing unit and the display circuit are connected in sequence; the voltage detection circuit is used for detecting the indicating voltage of a lighting capacitor of the depilating instrument and sending the indicating voltage to the central processing unit, wherein the indicating voltage is in direct proportion to the voltage of the lighting capacitor; the central processing unit is used for determining the output level of an indicator lamp driving pin of the central processing unit based on the indicating voltage and inputting the output level into the display circuit; the display circuit is used for determining the indication state of a charging indicator lamp in the display circuit based on the output level; under the condition that the charging indicator lamp is in a high-brightness state, if the indicating voltage is within a preset range, the central processing unit controls the output level of the indicator lamp driving pin to be unchanged.
In an alternative embodiment, the voltage detection circuit includes: a voltage division circuit and a filter circuit; the first end of the voltage division circuit is connected with the anode of the light-emitting capacitor, the second end of the voltage division circuit is respectively connected with the cathode of the light-emitting capacitor and the grounding end, and the third end of the voltage division circuit is connected with the first end of the filter circuit; the voltage division circuit is used for dividing the voltage of the lighting capacitor to obtain an initial indication voltage; the second end of the filter circuit is connected with the voltage detection end of the central processing unit, the third end of the filter circuit is connected with the grounding end, and the filter circuit is used for filtering the initial indication voltage to obtain the indication voltage.
In an alternative embodiment, the voltage divider circuit includes: a first resistor and a second resistor; the first end of the first resistor is connected with the anode of the light-emitting capacitor, and the second end of the first resistor is respectively connected with the first end of the second resistor and the first end of the filter circuit; and the second end of the second resistor is respectively connected with the negative electrode of the light-emitting capacitor and the grounding end.
In an alternative embodiment, the filter circuit comprises: a third resistor and a capacitor; the first end of the third resistor is connected with the third end of the voltage division circuit, and the second end of the third resistor is respectively connected with the first end of the capacitor and the voltage detection end of the central processing unit; and the second end of the capacitor is connected with the grounding end.
In an alternative embodiment, the central processor comprises: an analog-to-digital converter and a voltage comparator; the first end of the analog-to-digital converter is connected with the second end of the filter circuit, the second end of the analog-to-digital converter is connected with the first end of the voltage comparator, the third end of the analog-to-digital converter is connected with a power supply, and the fourth end of the analog-to-digital converter is connected with a grounding end and is used for performing analog-to-digital conversion on the indication voltage to obtain a digital indication voltage value; the second end of the voltage comparator is connected with the display circuit, the third end of the voltage comparator is connected with the power supply, and the fourth end of the voltage comparator is connected with the grounding end and used for comparing the digital indication voltage value with a preset digital signal value and determining the output level of the indicator lamp driving pin based on the comparison result.
In an alternative embodiment, the display circuit comprises: a charge indicator lamp and a switch circuit; the anode of the charging indicator lamp is connected with the power supply, and the cathode of the charging indicator lamp is connected with the first end of the switch circuit; the second end of the switch circuit is connected with the second end of the voltage comparator, and the third end of the switch circuit is connected with the ground terminal and used for determining the on-off state based on the output level; wherein, under the condition that the switch circuit is always on, the charging indicator lamp is highlighted.
In an alternative embodiment, the switching circuit comprises: a fourth resistor, a fifth resistor and a switching tube; the first end of the fourth resistor is connected with the negative electrode of the charging indicator lamp, and the second end of the fourth resistor is connected with the first end of the switch tube; the second end of the switch tube is connected with the first end of the fifth resistor, the second end of the fifth resistor is connected with the second end of the voltage comparator, and the third end of the switch tube is connected with the ground terminal.
In an optional embodiment, the charge indicator light control device further includes: a voltage converter; the voltage converter is used for converting an external power supply into the power supply.
In a second aspect, an embodiment provides a control method of a charge indicator lamp, which is applied to the control device of the charge indicator lamp in any one of the foregoing embodiments, and includes: detecting an indication voltage of a light-emitting capacitor of the depilating apparatus, wherein the indication voltage is in direct proportion to the voltage of the light-emitting capacitor; under the condition that the indicating voltage reaches a first preset value for the first time, controlling a charging indicator lamp to be in a high-brightness state; under the condition that the charging indicator lamp is in a high brightness state, if the indication voltage is within a preset range, the charging indicator lamp keeps the high brightness state.
In an optional embodiment, when the lighting capacitor is charged, if the indication voltage is lower than a second preset value, the charging indicator lamp is controlled to be in a low-light state, wherein the second preset value is lower than the first preset value.
In the prior art, the state of the charging indicator light of the depilating instrument is indicated according to the real-time voltage value of the light-emitting capacitor, and the electric parameters of the electronic device have certain deviation, so that the depilating instrument always has the flickering condition of the charging indicator light in the using process, and the user experience is seriously influenced. Compared with the prior art, the invention provides a charging indicator lamp control device, which comprises: the voltage detection circuit, the central processing unit and the display circuit are connected in sequence; the voltage detection circuit is used for detecting the indicating voltage of the lighting capacitor of the depilating instrument and sending the indicating voltage to the central processing unit, wherein the indicating voltage is in direct proportion to the voltage of the lighting capacitor; the central processing unit is used for determining the output level of an indicator lamp driving pin of the central processing unit based on the indicating voltage and inputting the output level into the display circuit; the display circuit is used for determining the indication state of the charging indicator lamp in the display circuit based on the output level; under the condition that the charging indicator lamp is in a high-brightness state, if the indicating voltage is within a preset range, the central processing unit controls the output level of the indicator lamp driving pin to be unchanged. The device can guarantee that when the charge indicator is in high bright state, the indicating voltage in the preset range does not change the indicating state of the charge indicator to alleviate the technical problem of charge indicator scintillation, promoted user experience.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a charging indicator light control device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an alternative voltage divider circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative voltage detection circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an alternative charging indicator light control device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another alternative charging indicator light control device according to an embodiment of the present invention;
fig. 7 is a flowchart of a control method for a charge indicator light according to an embodiment of the present invention.
Icon: 20-a polishing capacitor; 11-a voltage detection circuit; 12-a central processing unit; 13-a display circuit; 111-a voltage divider circuit; 112-a filter circuit; 121-an analog-to-digital converter; 122-a voltage comparator; 131-a charge indicator light; 132-switching circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the prior art, a depilatory apparatus generally collects the voltage of a lighting capacitor in real time, and then controls the indicating state (including high brightness, low brightness and stroboscopic) of a charging indicator lamp in real time based on the collected voltage of the lighting capacitor, but due to the difference influence of related electrical parameters in a hardware circuit, the situation that the charging indicator lamp flickers (the switching frequency of the high brightness and the stroboscopic is higher) is easily caused, and further the user experience is seriously influenced. In view of the above, the present invention provides a charging indicator light control device, which is used to solve the above mentioned technical problems.
Example one
An embodiment of the present invention provides a charging indicator lamp control apparatus, as shown in fig. 1, including: a voltage detection circuit 11, a central processing unit 12 and a display circuit 13 which are connected in sequence.
And the voltage detection circuit 11 is used for detecting the indication voltage of the lighting capacitor 20 of the depilating instrument and sending the indication voltage to the central processing unit 12, wherein the indication voltage is in direct proportion to the voltage of the lighting capacitor 20.
And a central processor 12 for determining an output level of the lamp driving pin of the central processor 12 based on the indication voltage and inputting the output level to the display circuit 13.
And a display circuit 13 for determining an indication state of the charge indicator lamp 131 in the display circuit 13 based on the output level.
Under the condition that the charging indicator lamp 131 is in the high brightness state, if the indication voltage is within the preset range, the central processing unit 12 controls the output level of the indicator lamp driving pin to be unchanged.
Specifically, the charging indicator control device provided in the embodiment of the present invention mainly includes a voltage detection circuit 11, a central processing unit 12, and a display circuit 13, where the display circuit 13 includes a charging indicator 131. When the photon depilating apparatus is lighted, the lighting voltage comes from the lighting capacitor 20, so the photon depilating apparatus needs to be lighted only when the lighting capacitor 20 is fully charged, and when the lighting capacitor 20 is fully charged, the charging indicator lamp 131 is highlighted (continuous current flows through the charging indicator lamp 131), so the indication state of the charging indicator lamp 131 plays a role of operation guidance.
In some embodiments, when the light-emitting capacitor 20 is fully charged, the voltage of the light-emitting capacitor 20 can be as high as several hundred volts, and most pins of the electronic device cannot directly detect the high voltage, so that the voltage of the light-emitting capacitor 20 needs to be scaled down proportionally and then sent to the cpu 12 for determination. The embodiment of the invention is provided with a voltage detection circuit 11 for detecting the indication voltage of the lighting capacitor 20 of the depilating apparatus, wherein the indication voltage is in direct proportion to the voltage of the lighting capacitor 20, that is, under the determined proportion, the central processing unit 12 can determine the actual voltage value of the lighting capacitor 20 according to the magnitude of the indication voltage, the higher the indication voltage is, the higher the voltage of the lighting capacitor 20 is, and after the indication voltage is detected, the indication voltage is sent to the central processing unit 12.
After receiving the indication voltage, the central processor 12 can determine an output level of the indicator driving pin based on the received indication voltage and a preset determination criterion, and the output level can directly influence an indication state of the charging indicator 131 in the display circuit 13 connected to the central processor 12.
After the depilating apparatus is used, the voltage of the lighting capacitor 20 may drop greatly, and may drop to tens of volts or even several volts, therefore, the photon depilating apparatus may immediately perform intermittent charging for the lighting capacitor 20 according to a preset charging logic, during charging, a user may preset a lighting voltage value, that is, the voltage of the lighting capacitor 20 is charged to the preset lighting voltage value, after the preset lighting voltage value is reached, the intermittent charging cannot avoid the occurrence of an overcharge condition or after the charging is suspended, the lighting capacitor 20 may drop the voltage due to self-discharge, if the voltage of the lighting capacitor 20 at this time fluctuates at the edge of the charging indicator lamp 131 and the highlight, the charging indicator lamp 131 may flash, and actually the voltage fluctuation at this time does not affect the lighting function, but the strobe may give a wrong operation instruction to the user, or even affect the user's use, thereby making the user experience poor.
In view of this, the inventor thinks that a large amount of charging data is collected first, when the intermittent charging is obtained, after the voltage of the lighting capacitor 20 reaches the preset lighting voltage (which is equal to the indication voltage reaching the preset indication voltage), the normal floating range of the indication voltage is indicated, then the corresponding preset range (which is larger than the normal floating range) is set based on the normal floating range, after the central processing unit 12 determines that the indication voltage reaches the preset indication voltage (at this time, the charging indicator lamp 131 is in the high brightness state), as long as the voltage floating range of the indication voltage does not exceed the preset range, the charging indicator lamp 131 is controlled to be in the high brightness state (the output level of the indicator lamp driving pin is unchanged), and the technical problem that the charging indicator lamp 131 flickers is solved effectively.
In some embodiments, the photon depilating apparatus may preset a plurality of gears, the preset lighting voltage values of the lighting capacitor 20 corresponding to each gear are different, and a user may set a preset range corresponding to each gear according to an actual situation.
For example, 7 gears are preset in the photon depilating device, the preset lighting voltage corresponds to 265V, 290V, 315V, 340V, 360V, 385V, and 400V, and it is known that the intermittent charging mode can still make the lighting capacitor 20 float up and down at 10V of the preset lighting voltage value after being fully charged, so that the floating range of the indication voltage corresponding to ± 15V of the preset lighting voltage can be used as the preset range, and the situation that the charging indication lamp 131 flickers can be avoided.
In the prior art, the state of the charging indicator lamp 131 of the depilating apparatus is indicated according to the real-time voltage value of the lighting capacitor 20, and the depilating apparatus always has the situation that the charging indicator lamp 131 flickers in the use process due to certain deviation of electrical parameters of electronic devices, which seriously affects user experience. Compared with the prior art, the invention provides a charging indicator lamp control device, which comprises: the voltage detection circuit 11, the central processing unit 12 and the display circuit 13 are connected in sequence; the voltage detection circuit 11 is used for detecting the indication voltage of the light-emitting capacitor 20 of the depilating instrument and sending the indication voltage to the central processing unit 12, wherein the indication voltage is in direct proportion to the voltage of the light-emitting capacitor 20; a central processor 12 for determining an output level of an indicator driving pin of the central processor 12 based on the indication voltage and inputting the output level to the display circuit 13; a display circuit 13 for determining an indication state of the charge indicator lamp 131 in the display circuit 13 based on the output level; under the condition that the charging indicator lamp 131 is in the high brightness state, if the indication voltage is within the preset range, the central processing unit 12 controls the output level of the indicator lamp driving pin to be unchanged. The device can guarantee that when charging indicator 131 is in high bright state, the indicating voltage in the preset range does not change the indicating state of charging indicator 131 to alleviate the technical problem of the scintillation of charging indicator 131, promoted user experience.
The operation of the charge indicator lamp control device according to the embodiment of the present invention is briefly described above, and the specific circuit structure thereof is described in detail below.
In an alternative embodiment, as shown in fig. 2, the voltage detection circuit 11 includes: a voltage divider circuit 111 and a filter circuit 112.
The first end of the voltage division circuit 111 is connected with the anode of the light-emitting capacitor 20, the second end of the voltage division circuit 111 is respectively connected with the cathode of the light-emitting capacitor 20 and the grounding end, and the third end of the voltage division circuit 111 is connected with the first end of the filter circuit 112; the voltage dividing circuit 111 is configured to divide the voltage of the pumping capacitor 20 to obtain an initial indication voltage.
The second terminal of the filter circuit 112 is connected to the voltage detection terminal of the central processing unit 12, the third terminal of the filter circuit 112 is connected to the ground terminal, and the filter circuit 112 is configured to filter the initial indication voltage to obtain the indication voltage.
Specifically, as described above, the preset pumping voltage of the pumping capacitor 20 often reaches several hundred volts, therefore, the voltage of the light-emitting capacitor 20 cannot be directly input into the central processing unit 12, and needs to be reduced in an equal proportion, in the embodiment of the invention, the voltage is collected by combining the voltage division circuit 111 and the filter circuit 112, according to the circuit structure, the output of the third terminal of the voltage divider 111 is the collected initial indication voltage, in order to make the voltage detection more accurate, the initial indication voltage needs to be filtered before being input to the voltage detection terminal of the cpu 12, therefore, the output voltage of the third terminal of the voltage divider 111 is connected to (the first terminal of) the filter circuit 112, and after being filtered by the filter circuit 112, the indication voltage outputted (the second terminal of the filter circuit 112) is inputted to the voltage detection terminal of the cpu 12.
In an alternative embodiment, as shown in fig. 3, the voltage divider circuit 111 includes: a first resistor R1 and a second resistor R2; a first end of the first resistor R1 is connected with the anode of the light emitting capacitor 20, and a second end of the first resistor R1 is connected with a first end of the second resistor R2 and a first end of the filter circuit 112 respectively; the second end of the second resistor R2 is connected to the negative electrode of the lighting capacitor 20 and the ground terminal, respectively.
According to the circuit connection structure, the first resistor R1 and the second resistor R2 form the series voltage divider 111, and in order to obtain a smaller indication voltage suitable for voltage determination, the resistance of the first resistor R1 should be much larger than that of the second resistor R2, so that the loop current is smaller, and the second end voltage (initial indication voltage) of the second resistor R2 is smaller. The circuit structure of the voltage dividing circuit 111 is provided for convenience of principle explanation, and does not represent that only 2 resistors connected in series can be arranged in the voltage dividing circuit 111, so that a user can increase the number of the resistors according to actual situations, and the invention does not specifically limit the number of the resistors used in the circuit.
In an alternative embodiment, as shown in fig. 4, the filter circuit 112 includes: a third resistor R3 and a capacitor C; a first end of the third resistor R3 is connected to the third end of the voltage divider 111, and a second end of the third resistor R3 is connected to the first end of the capacitor C and the voltage detection end of the cpu 12, respectively; the second end of the capacitor C is connected to the ground terminal.
The invention provides an RC low-pass filter circuit 112 consisting of a third resistor R3 and a capacitor C, wherein a second end of the third resistor R3, namely the output end of the filter circuit 112, is connected with a voltage detection end of a central processing unit 12. The user may also set the filter circuit 112 according to actual conditions, as long as the output indication voltage is accurate, and the present invention does not limit the specific representation form of the filter circuit 112.
In an alternative embodiment, as shown in fig. 5, the central processor 12 includes: an analog-to-digital converter 121 and a voltage comparator 122.
The first end of the analog-to-digital converter 121 is connected to the second end of the filter circuit 112, the second end of the analog-to-digital converter 121 is connected to the first end of the voltage comparator 122, the third end of the analog-to-digital converter 121 is connected to the power supply, and the fourth end of the analog-to-digital converter 121 is connected to the ground end, and is configured to perform analog-to-digital conversion on the indication voltage to obtain a digital indication voltage value.
The second terminal of the voltage comparator 122 is connected to the display circuit 13, the third terminal of the voltage comparator 122 is connected to the power supply, and the fourth terminal of the voltage comparator 122 is connected to the ground terminal, and is configured to compare the digital indication voltage value with a preset digital signal value, and determine the output level of the indicator lamp driving pin based on the comparison result.
Since the indication voltage received by the voltage detection terminal of the central processing unit 12 is an analog voltage, it needs to be converted into a digital indication voltage before comparison and further determination can be performed, in this embodiment of the present invention, the central processing unit 12 includes: the voltage detection circuit comprises an analog-to-digital converter 121 and a voltage comparator 122, wherein a first end (a voltage detection end of the central processing unit 12) of the analog-to-digital converter 121 receives an analog indication voltage, a digital indication voltage value is obtained after analog-to-digital conversion and is sent to a first end of the voltage comparator 122 connected with the analog-to-digital converter, the voltage comparator 122 compares the digital indication voltage value with a preset digital signal value to obtain a comparison result, and then the output level of a second end (an indicator lamp driving pin) of the voltage comparator 122 is determined according to a preset judgment standard and the comparison result.
In the embodiment of the present invention, the preset determination criteria are set as follows: under the condition that the charging indicator lamp 131 is in a high light state, if the indication voltage is within the preset range, the central processing unit 12 controls the output level of the indicator lamp driving pin to be unchanged.
For example, the preset striking voltage of the striking capacitor 20 is set to 400V, and the floating range of the indication voltage corresponding to ± 15V of the preset striking voltage is used as the preset range, so that when the voltage of the striking capacitor 20 reaches 400V for the first time in the charging process, it is indicated that the voltage of the striking capacitor 20 has reached the requirement, and the charging indicator lamp 131 is in a high-brightness state at this time, but the intermittent charging mode may cause the voltage of the striking capacitor 20 to fluctuate between 394V and 406V after reaching 400V, and according to the preset determination criterion, the output level of the indicator lamp driving pin of the central processing unit 12 is not changed as long as the voltage fluctuates between 385V and 415V (the indication voltage does not exceed the preset range), that is, the charging indicator lamp 131 can maintain a high-brightness state and does not flicker.
In an alternative embodiment, as shown in fig. 6, the display circuit 13 includes: a charge indicator lamp 131 and a switching circuit 132.
The anode of the charge indicator 131 is connected to the power supply, and the cathode of the charge indicator 131 is connected to the first end of the switch circuit 132.
A second terminal of the switching circuit 132 is connected to the second terminal of the voltage comparator 122, and a third terminal of the switching circuit 132 is connected to the ground terminal, for determining an on-off state based on the output level.
In the case where the switching circuit 132 is normally on, the charge indicator lamp 131 is highlighted.
According to the circuit connection relationship, the switch circuit 132 and the charging indicator lamp 131 form a series circuit, the second end (indicator lamp driving pin) of the voltage comparator 122 is equivalent to the control end of the switch circuit 132, the output level of the indicator lamp driving pin can affect the on-off state of the switch circuit 132, the switch circuit 132 is turned on, and the charging indicator lamp 131 is turned on; the switching circuit 132 is turned off and the charge indicator lamp 131 is not lit. In the embodiment of the present invention, when the switch circuit 132 is in the normally on state, the charge indicator lamp 131 is highlighted; when the output level of the indicator driving pin is a PWM (Pulse width modulation) wave with a certain frequency and a certain duty ratio, the switch circuit 132 can be regularly turned on and off, so that an intermittent current flows through the charging indicator 131, and the charging indicator 131 observed by a user is in a low-brightness state due to the temporary storage effect of human vision. For example, when a PWM wave with a 50% duty cycle and a 1KHz frequency is output, it can be determined that charge indicator lamp 131 is in a low-lighted state. For the convenience of observation of the user, or to enhance the indication effect, the user may also set a plurality of charging indicator lamps 131 in the display circuit 13, so as to ensure that the plurality of charging indicator lamps 131 are simultaneously on or not simultaneously on at the same output level, and the embodiment of the present invention does not specifically limit the number and the placement positions of the charging indicator lamps 131.
In an alternative embodiment, the switching circuit 132 includes: a fourth resistor R4, a fifth resistor R5 and a switch tube T; a first end of the fourth resistor R4 is connected to the negative electrode of the charge indicator 131, and a second end of the fourth resistor R4 is connected to the first end of the switch tube T; the second end of the switch tube T is connected to the first end of the fifth resistor R5, the second end of the fifth resistor R5 is connected to the second end of the voltage comparator 122, and the third end of the switch tube T is connected to the ground.
Specifically, as shown in fig. 6, the switching tube T of the switching circuit 132 in the embodiment of the present invention may select an NPN type triode, and according to a circuit formed by the fourth resistor R4, the fifth resistor R5 and the switching tube T, when the output level of the indicator light driving pin is high (greater than the triode conduction voltage), the triode is turned on, and the charging indicator light 131 connected to the switching circuit 132 is turned on; when the output level of the second terminal (indicator driving pin) of the voltage comparator 122 is low (less than the transistor on voltage), the transistor is turned off, and the charge indicator 131 connected to the switch circuit 132 is not turned on. The above circuit structure is only for a schematic description, and the embodiment of the present invention does not limit the specific structure of the switch circuit 132 as long as it can be turned on and off according to the output level.
In an optional embodiment, the charge indicator control device further comprises: a voltage converter; and the voltage converter is used for converting the external power supply into the power supply.
In order to ensure stable power supply of the charging indicator light control device, a user may further provide a voltage converter at a front end of the power supply to convert the external power source or the internal auxiliary power source into a stable power supply, and in some embodiments, the voltage converter may generally be a Low Dropout regulator (LDO) or a DC/DC (direct current voltage converter).
In summary, the present invention monitors the voltage of the pumping capacitor 20 in real time on the basis of building the voltage detection circuit 11, the central processing unit 12 and the display circuit 13, and sets the preset determination standard: under the condition that the charging indicator lamp 131 is in a high brightness state, if the indication voltage is within the preset range, the central processor 12 controls the output level of the indicator lamp driving pin to be unchanged, and further the technical problem that the charging indicator lamp 131 flickers due to the deviation of the electrical parameters of the electronic device is effectively solved.
Example two
An embodiment of the present invention further provides a control method of a charging indicator light, where the control method of the charging indicator light is applied to the control device of the charging indicator light provided in the first embodiment, as shown in fig. 7, the method specifically includes the following steps:
step S102, detecting the indication voltage of the light-emitting capacitor of the depilating apparatus.
Wherein, the indication voltage is in direct proportion to the voltage of the light-emitting capacitor;
step S104, controlling the charging indicator lamp to be in a high-brightness state under the condition that the indicating voltage reaches a first preset value for the first time;
and step S106, under the condition that the charging indicator lamp is in the high brightness state, if the indicating voltage is in the preset range, the charging indicator lamp keeps the high brightness state.
In the first embodiment, it has been explained in detail why the indication voltage of the lighting capacitor of the depilating apparatus is to be monitored, and the detailed source of the indication voltage, which are not described herein again, after the indication voltage is obtained, it may be determined whether the voltage of the lighting capacitor reaches a preset lighting voltage value corresponding to a charging gear preset by a user (which is equivalent to the indication voltage reaching a first preset value), if the indication voltage reaches the first preset value for the first time in the charging process, it may be indicated that the lighting capacitor is fully charged, and the charging indicator lamp is controlled to be in a high-brightness state (the charging indicator lamp flows a continuous current), in this case, in order to avoid the flickering of the charging indicator lamp caused by the deviation of the electrical parameters of the electronic device, the embodiment of the present invention sets the preset determination standard: under the condition that the charging indicator lamp is in a high brightness state, if the indicating voltage is in a preset range, the charging indicator lamp keeps the high brightness state, and therefore the technical problem can be effectively relieved.
In an optional embodiment, when the lighting capacitor is charged, if the indication voltage is lower than a second preset value, the charging indicator lamp is controlled to be in a low-light state, wherein the second preset value is lower than the first preset value.
Specifically, the indication state of the fully charged charge indicator lamp is set, and accordingly, in the charging process of the voltage of the lighting capacitor from the low voltage to the full voltage, or in the discharging process of the lighting capacitor, if the indication voltage is lower than the second preset value (smaller than the first preset value), it indicates that the lighting capacitor is not fully charged or the voltage is insufficient, that is, the photon depilating apparatus cannot light at this time, and the charge indicator lamp should be controlled to be in the low-light state (an intermittent current flows through the charge indicator lamp), it should be noted that, since the charging time from the lower limit voltage of the preset range to the preset indication voltage is short, the time of the change of the charge indication can be basically ignored. For example, if the preset lighting voltage is 400V and the lower limit voltage value of the lighting capacitor is 385V, the embodiment of the invention provides that the charging indicator lamp is controlled to be in the low-light state as long as the voltage of the lighting capacitor is lower than 385V (which is equivalent to the indication voltage lower than the second preset value), and the charging time from 385V to 400V is extremely short and can be ignored.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A charge indicator control device, comprising: the voltage detection circuit, the central processing unit and the display circuit are connected in sequence;
the voltage detection circuit is used for detecting the indicating voltage of a lighting capacitor of the depilating instrument and sending the indicating voltage to the central processing unit, wherein the indicating voltage is in direct proportion to the voltage of the lighting capacitor;
the central processing unit is used for determining the output level of an indicator lamp driving pin of the central processing unit based on the indicating voltage and inputting the output level into the display circuit;
the display circuit is used for determining the indication state of a charging indicator lamp in the display circuit based on the output level;
under the condition that the charging indicator lamp is in a high-brightness state, if the indicating voltage is within a preset range, the central processing unit controls the output level of the indicator lamp driving pin to be unchanged.
2. The charge indicator control device of claim 1, wherein the voltage detection circuit comprises: a voltage division circuit and a filter circuit;
the first end of the voltage division circuit is connected with the anode of the light-emitting capacitor, the second end of the voltage division circuit is respectively connected with the cathode of the light-emitting capacitor and the grounding end, and the third end of the voltage division circuit is connected with the first end of the filter circuit; the voltage division circuit is used for dividing the voltage of the light emitting capacitor to obtain an initial indication voltage;
the second end of the filter circuit is connected with the voltage detection end of the central processing unit, the third end of the filter circuit is connected with the grounding end, and the filter circuit is used for filtering the initial indication voltage to obtain the indication voltage.
3. The charge indicator control device of claim 2, wherein the voltage divider circuit comprises: a first resistor and a second resistor;
the first end of the first resistor is connected with the anode of the light-emitting capacitor, and the second end of the first resistor is respectively connected with the first end of the second resistor and the first end of the filter circuit;
and the second end of the second resistor is respectively connected with the negative electrode of the light-emitting capacitor and the grounding end.
4. The charge indicator control device of claim 2, wherein the filter circuit comprises: a third resistor and a capacitor;
the first end of the third resistor is connected with the third end of the voltage division circuit, and the second end of the third resistor is respectively connected with the first end of the capacitor and the voltage detection end of the central processing unit;
and the second end of the capacitor is connected with the grounding end.
5. The charge indicator control device of claim 2, wherein the central processor comprises: an analog-to-digital converter and a voltage comparator;
the first end of the analog-to-digital converter is connected with the second end of the filter circuit, the second end of the analog-to-digital converter is connected with the first end of the voltage comparator, the third end of the analog-to-digital converter is connected with a power supply, and the fourth end of the analog-to-digital converter is connected with a grounding end and is used for performing analog-to-digital conversion on the indication voltage to obtain a digital indication voltage value;
the second end of the voltage comparator is connected with the display circuit, the third end of the voltage comparator is connected with the power supply, and the fourth end of the voltage comparator is connected with the grounding end and used for comparing the digital indication voltage value with a preset digital signal value and determining the output level of the indicator lamp driving pin based on the comparison result.
6. The charge indicator control device of claim 5, wherein the display circuit comprises: a charge indicator lamp and a switch circuit;
the anode of the charging indicator lamp is connected with the power supply, and the cathode of the charging indicator lamp is connected with the first end of the switch circuit;
the second end of the switch circuit is connected with the second end of the voltage comparator, and the third end of the switch circuit is connected with the ground terminal and used for determining the on-off state based on the output level;
wherein, under the condition that the switch circuit is always on, the charging indicator lamp is highlighted.
7. The charge indicator control device of claim 6, wherein the switching circuit comprises: a fourth resistor, a fifth resistor and a switching tube;
the first end of the fourth resistor is connected with the negative electrode of the charging indicator lamp, and the second end of the fourth resistor is connected with the first end of the switch tube;
the second end of the switch tube is connected with the first end of the fifth resistor, the second end of the fifth resistor is connected with the second end of the voltage comparator, and the third end of the switch tube is connected with the ground terminal.
8. The charge indicator control device of claim 5, further comprising: a voltage converter;
the voltage converter is used for converting an external power supply into the power supply.
9. A charge indicator control method applied to the charge indicator control device according to any one of claims 1 to 8, comprising:
detecting an indication voltage of a light-emitting capacitor of the depilating apparatus, wherein the indication voltage is in direct proportion to the voltage of the light-emitting capacitor;
under the condition that the indicating voltage reaches a first preset value for the first time, controlling a charging indicator lamp to be in a high-brightness state;
under the condition that the charging indicator lamp is in a high brightness state, if the indication voltage is within a preset range, the charging indicator lamp keeps the high brightness state.
10. The charge indicator lamp control method according to claim 9,
when the lighting capacitor is charged, if the indication voltage is lower than a second preset value, the charging indicator lamp is controlled to be in a low-brightness state, wherein the second preset value is lower than the first preset value.
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