System control circuit, indication component and electronic atomization device for driving indication light

Abstract

The application provides a system control circuit for driving an indicator lamp, comprising: a power supply positive terminal and a power supply negative terminal, which are used for electrically connecting with the positive and negative poles of a power supply; a voltage reduction unit, which is electrically connected with the power supply positive terminal and the power supply negative terminal, and is used for making the voltage of the output terminal of the voltage reduction unit less than or equal to a preset voltage; and a first voltage increase unit, an input terminal of which is electrically connected with the output terminal of the voltage reduction unit, and an output terminal of which is used for electrically connecting with the indicator lamp, and the first voltage increase unit is used for increasing the voltage of the output terminal of the voltage reduction unit to drive the indicator lamp. The application also provides an indicator assembly and an electronic atomization device.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, and in particular to a system control circuit, indicator component, and electronic atomization device for driving indicator lights. Background Technology

[0002] Existing electronic atomizing devices, such as e-cigarettes, generally include indicator lights, which typically use LEDs. These LEDs are generally white, green, or blue, and their forward voltage range is generally greater than or equal to 2.5V, typically between 2.5V and 3.6V, for example, 3V. Some existing electronic atomizing devices use low-voltage power supplies instead of conventional power supplies. This increases the number of inhalation ports and reduces the cost of the device. However, the output voltage range of low-voltage power supplies is generally 1.5V-3.6V (nominal voltage is generally 2.8V), compared to the output voltage range of conventional power supplies (2.5V-4.2V, nominal voltage is generally 3.7V). The lower output voltage of low-voltage power supplies causes the indicator lights to illuminate unstably. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of this application is to provide a system control circuit, an indicator component, and an electronic atomizing device for driving an indicator light. This allows for stable driving of the indicator light to emit light.

[0004] To address the aforementioned technical problems, a first aspect of this application provides a system control circuit for driving an indicator light, comprising:

[0005] The power supply terminal and the power ground terminal are used to make electrical connections with the positive and negative terminals of the power supply, respectively.

[0006] The step-down unit is electrically connected to the power supply terminal and the power supply ground terminal, and is used to make the voltage at the output terminal of the step-down unit less than or equal to the preset voltage.

[0007] The first boost unit has its input terminal electrically connected to the output terminal of the buck unit, and its output terminal is used to be electrically connected to the indicator light. The first boost unit is used to boost the voltage at the output terminal of the buck unit to drive the indicator light.

[0008] Optionally, the step-down unit includes a low-dropout linear regulator, the input terminal of which is electrically connected to the power supply terminal, and its output terminal is electrically connected to the first boost unit. The low-dropout linear regulator is used to make the voltage at the output terminal less than or equal to a preset voltage.

[0009] Optionally, the low-dropout linear regulator includes an operational amplifier, a first sampling resistor, a second sampling resistor, and a regulating transistor. The first terminal of the regulating transistor is the input terminal of the low-dropout linear regulator, and the second terminal of the regulating transistor is the output terminal of the low-dropout linear regulator. The control terminal of the regulating transistor is electrically connected to the output terminal of the operational amplifier. The non-inverting terminal of the operational amplifier is connected to a second reference voltage. The inverting terminal of the operational amplifier is electrically connected to the first terminal of the second sampling resistor. The first terminal of the first sampling resistor is electrically connected to the second terminal of the regulating transistor. The second terminal of the first sampling resistor is electrically connected to the first terminal of the second sampling resistor. The second terminal of the second sampling resistor is electrically connected to the power supply ground terminal.

[0010] Optionally, the regulating transistor may include a bipolar transistor or a MOSFET; or, the preset voltage may be in the range of 1.5V-3V.

[0011] Optionally, the system control circuit includes a light control unit, which controls whether the indicator light is lit. The light control unit is electrically connected to the enable terminal of the operational amplifier to control whether the operational amplifier is working. When the light control unit controls the indicator light to be lit, the light control unit controls the operational amplifier to work. When the light control unit controls the indicator light to be turned off, the light control unit controls the operational amplifier to stop working.

[0012] Optionally, the buck unit includes a Buck circuit; and / or, the first boost unit includes a boost circuit.

[0013] Optionally, the system circuit includes a switch control unit, which is electrically connected to the power supply terminal and the power ground terminal respectively.

[0014] The first boost unit includes:

[0015] The first switching unit has its control terminal electrically connected to the switch control unit, its first terminal electrically connected to the power supply terminal, and its second terminal electrically connected to the indicator light and the first terminal of the first capacitor.

[0016] The second switching unit has its control terminal electrically connected to the switch control unit, its first terminal electrically connected to the power supply terminal, its second terminal electrically connected to the second terminal of the first capacitor, and its second terminal also indirectly connected to the power ground terminal.

[0017] The switch control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor. The switch control unit also controls the second switch unit to be turned on and the first switch unit to be turned off to raise the potential of the first terminal of the first capacitor, which is used to drive the indicator light.

[0018] Optionally, the system control circuit further includes a third switching unit, whose control terminal is electrically connected to the switch control unit, whose first terminal is electrically connected to the second terminal of the first capacitor, and whose second terminal is electrically connected to the power supply ground terminal. The third switching unit is turned on when the first switching unit is turned on when voltage boosting is required, and the third switching unit is turned off when the first switching unit is turned off.

[0019] Optionally, the switch control unit includes a first drive unit, which is electrically connected to the control terminal of the first switch unit; and,

[0020] The first switching unit includes a PMOS transistor, and the first driving unit includes an inverter, a first NMOS transistor, a second NMOS transistor, a first PMOS transistor, and a second PMOS transistor. The input terminal of the inverter is electrically connected to the control terminal of the second switching unit, and the output terminal of the inverter is electrically connected to the control terminal of the first NMOS transistor. The source of the first NMOS transistor is electrically connected to the power supply ground terminal, and its drain is electrically connected to the drain of the first PMOS transistor and the control terminal of the second PMOS transistor. The control terminal of the first PMOS transistor is electrically connected to the drain of the second NMOS transistor. The source of the first PMOS transistor is electrically connected to the second terminal of the first switching unit. The source of the second NMOS transistor is electrically connected to the power supply ground terminal, and the control terminal of the second NMOS transistor is electrically connected to the control terminal of the second switching unit. The drain of the second NMOS transistor is also electrically connected to the drain of the second PMOS transistor, and the source of the second PMOS transistor is electrically connected to the second terminal of the first switching unit. The drain of the second NMOS transistor is also used to control whether the first switching unit is turned on; or...

[0021] The switch control unit further includes a logic control unit, and the input terminal of the first drive unit is electrically connected to the logic control unit; or,

[0022] The first switching unit includes an NMOS transistor, and the first driving unit includes a second boost circuit. The output terminal of the second boost circuit is electrically connected to the control terminal of the first switching unit, and the input terminal of the second boost circuit is electrically connected to the control terminal of the second switching unit; or...

[0023] The switch control unit further includes a logic control unit. The first switch unit includes an NMOS transistor, and the first drive unit includes a second boost circuit. The output terminal of the second boost circuit is electrically connected to the control terminal of the first switch unit, and the input terminal of the second boost circuit is electrically connected to the logic control unit; or...

[0024] The first switching unit is manufactured using a low-voltage process of less than or equal to 6V.

[0025] Optionally, the switch control unit further includes a second drive unit, which is electrically connected to the control terminal of the second switch unit;

[0026] The switch control unit further includes a logic control unit. The second switch unit includes a PMOS transistor, and the second drive unit includes a third NMOS transistor and a third PMOS transistor. The source of the third NMOS transistor is electrically connected to the power supply ground terminal. The control terminals of the third NMOS transistor and the third PMOS transistor are electrically connected to the logic control unit. The drain of the third NMOS transistor is electrically connected to the drain of the third PMOS transistor. The source of the third PMOS transistor is electrically connected to the power supply terminal. The drain of the third NMOS transistor is also used to control whether the second switch unit is turned on; or...

[0027] The switch control unit further includes a logic control unit, which is electrically connected to the control terminal of the second switch unit.

[0028] Optionally, the system control circuit further includes a third switching unit, whose control terminal is electrically connected to the switch control unit, whose first terminal is electrically connected to the second terminal of the second switching unit, and whose second terminal is electrically connected to the power supply ground terminal;

[0029] The switch control unit further includes a third drive unit, which is electrically connected to the control terminal of the third switch unit, and the logic control unit is electrically connected to the second drive unit and the third drive unit respectively.

[0030] The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor. The source of the fourth NMOS transistor is electrically connected to the power supply ground terminal. The control terminals of the fourth NMOS transistor and the fourth PMOS transistor are both electrically connected to the logic control unit. The drain of the fourth NMOS transistor is electrically connected to the drain of the fourth PMOS transistor, and the source of the fourth PMOS transistor is electrically connected to the power supply terminal. The drain of the fourth NMOS transistor is also used to control whether the third switching unit is turned on.

[0031] Optionally, the logic control unit further includes a first logic gate and a second logic gate, wherein the first input terminal of the first logic gate is connected to a clock signal, its third input terminal is electrically connected to the control terminal of the third switching unit, and its output terminal is electrically connected to the second driving unit; the first input terminal of the second logic gate is electrically connected to the control terminal of the second switching unit, its second input terminal is connected to the clock signal, and its output terminal is electrically connected to the third driving unit.

[0032] Optionally, the system control circuit further includes a light control unit, which controls whether the indicator light illuminates. The light control unit is electrically connected to the second input terminal of the first logic gate so that the indicator light is not illuminated when it is not needed; or,

[0033] The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate; or,

[0034] The system control circuit also includes a light-on control unit and a clock signal generation unit. The light-on control unit is used to control whether the indicator light is lit. The clock signal generation unit is used to generate a clock signal. The enable terminal of the clock signal generation unit is electrically connected to the light-on control unit. When the light-on control unit controls the indicator light to light up, the light-on control unit controls the clock signal generation unit to work to generate a clock signal. When the light-on control unit controls the indicator light to turn off, the light-on control unit controls the clock signal generation unit to stop working.

[0035] Optionally, the system control circuit is located on the same chip, the power supply terminal is a power supply pin, the power ground terminal is a power ground pin, and the system control circuit further includes a first light-emitting pin, which is electrically connected to the output terminal of the first boost unit and is used to electrically connect to an indicator light; or,

[0036] The system control circuit also includes a light control unit, which controls whether the indicator light illuminates. The system control circuit also includes a fourth switch unit or a current source, which is connected in series with the indicator light. The control terminal of the fourth switch unit or the current source is electrically connected to the light control unit.

[0037] A second aspect of this application provides an indicator component, including...

[0038] The above-mentioned system control circuit;

[0039] An indicator light, which is electrically connected to the first boost unit of the system control circuit;

[0040] The power supply, with its positive and negative terminals connected to the power supply terminal and power ground terminal of the system control circuit, respectively.

[0041] Optionally, the power supply provides a voltage range of 1.5V-5V; or,

[0042] The indicating component further includes a first capacitor, the first terminal of which and the indicator light are electrically connected to the same terminal of the first boost unit, and the second terminal of which is indirectly electrically connected to the power supply ground terminal; or...

[0043] The indicator light is an LED light, which includes white LED lights and / or blue LED lights, and the minimum on-state voltage of the indicator light is greater than or equal to 2.5V; or,

[0044] The power source includes battery cells.

[0045] A third aspect of this application provides an electronic atomizing device, comprising:

[0046] The aforementioned system control circuit or the aforementioned indicator component

[0047] The system control circuit of this application embodiment includes a buck unit and a first boost unit. The buck unit is used to make the voltage at its output terminal less than or equal to a preset voltage. The output terminal of the first boost unit is used to be electrically connected to an indicator light. The first boost unit is used to boost the voltage at the output terminal of the buck unit to drive the indicator light. Therefore, regardless of whether the voltage at the power supply terminal is high or low, after passing through the buck unit, its output voltage is made less than or equal to the preset voltage. Then, after being boosted by the first boost unit, the indicator light can be stably driven to illuminate stably. Moreover, the switching unit in the first boost unit generally uses a low-voltage process. The output voltage of the buck unit is less than or equal to the preset voltage. After being boosted by the first boost unit, the output voltage of the buck unit will be lower, lower than the withstand voltage of the MOSFET. Therefore, the switching unit in the first boost unit will not bear a large voltage, and the switching unit in the first boost unit is not easily damaged. Furthermore, since the output voltage of the buck unit is less than or equal to the preset voltage, even after being boosted by the first boost unit, the voltage spike that the switching unit bears when it is turned off will be relatively small, and the first switching unit and the indicator light are not easily damaged. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a circuit block diagram of the electronic atomizing device according to the first embodiment of this application;

[0050] Figure 2 This is a circuit block diagram of the system control circuit according to the first embodiment of this application;

[0051] Figure 3 This is a detailed circuit diagram of the system control circuit of the first embodiment of this application;

[0052] Figure 4 This is a circuit block diagram of an electronic atomizing device according to another embodiment of this application;

[0053] Figure 5 yes Figure 4 The specific circuit diagram of the system control circuit;

[0054] Figure 6 This is a detailed circuit diagram of the system control circuit according to another embodiment of this application;

[0055] Figure 7 This is a circuit block diagram of the system control circuit according to the second embodiment of this application;

[0056] Figure 8 This is a detailed circuit diagram of the power supply determination unit according to the second embodiment of this application;

[0057] Figure 9 This is a detailed circuit diagram of the system control circuit of the second embodiment of this application;

[0058] Figure 10 This is a circuit block diagram of the system control circuit according to the third embodiment of this application;

[0059] Figure 11 This is a detailed circuit diagram of the step-down unit according to the third embodiment of this application;

[0060] Figure 12 This is a detailed circuit diagram of the system control circuit according to the third embodiment of this application. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0062] The terms "comprising" and "having," and any variations thereof, appearing in this application specification, claims, and drawings, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. Furthermore, the terms "first," "second," and "third," etc., are used to distinguish different objects and are not used to describe a specific order. Electrical connections in this application include direct electrical connections and indirect electrical connections. Indirect electrical connections refer to connections where other electronic components, pins, etc., may exist between the two electrically connected components. The "XX terminal" mentioned in this application may or may not be an actual terminal; for example, it may simply be one end of a component or one end of a wire. The mention of "and / or including" three cases in this application, such as A and / or B, includes all three cases: A, B, and A and B.

[0063] First Embodiment

[0064] This application provides an electronic atomizing device, such as an electronic cigarette. Please refer to [link to relevant documentation]. Figure 1 The electronic atomizing device includes an indicator component, a heating wire 130, and an airflow sensor 140. The indicator component includes a power supply 110, an indicator light 120, a system control circuit 200, and a first capacitor C1. The system control circuit 200 is electrically connected to the power supply 110, the indicator component, the heating wire 130, and the airflow sensor 140. In this embodiment, the power supply 110 includes a battery cell and is a low-voltage power supply. The range of the supply voltage it provides includes 1.5V-3.6V, such as 1.5V-3.6V, 1.6V-3.6V, 1.5V-3.4V, 1.8V-3.5V, and 2.1V-3.6V. Its nominal voltage is less than or equal to 3V, and the nominal voltage is generally 2.5V-2.9V, such as 2.7V or 2.8V. Indicator light 120 is, for example, an LED light, such as a white LED light and / or a blue LED light. The forward conduction voltage range of these LED lights is generally 2.5V-3.6V, for example 3V. The LED light can only be lit if the voltage driving the LED light is greater than the forward conduction voltage. Airflow sensor 140 is, for example, a MEMS sensor or a microphone.

[0065] Please refer to the above. Figure 1 and Figure 2 In this embodiment, the system control circuit 200 includes a power supply terminal BAT, a power ground terminal GND, a switch control unit, a first switch unit K1, and a second switch unit K2.

[0066] In this embodiment, the power supply terminal BAT is electrically connected to the positive terminal of the power supply 110, the power ground terminal GND is electrically connected to the negative terminal of the power supply 110, and the switch control unit is electrically connected to the power supply terminal BAT and the power ground terminal GND respectively.

[0067] In this embodiment, the first end of the first switching unit K1 is electrically connected to the power supply terminal BAT for connection to the positive terminal of the power supply 110. The second end of the first switching unit K1 is electrically connected to the indicator light 120. Here, the second end of the first switching unit K1 can be directly connected to the first end of the indicator light 120. Other components, such as current-limiting resistors, other switching units, constant current sources, etc., may exist between the indicator light 120 and the first switching unit K1. The control terminal of the first switching unit K1 is electrically connected to the switch control unit, which controls the first switching unit K1 to turn on or off.

[0068] In this embodiment, the second terminal of the first switching unit K1 is also electrically connected to the first terminal of the first capacitor C1, thereby connecting the first terminal of the first capacitor C1 to the indicator light 120 for driving the indicator light 120. The second terminal of the first capacitor C1 is indirectly connected to the power ground terminal GND. Specifically, the second terminal of the first capacitor C1 is connected to the power ground terminal GND via a charging element, such as the third switching unit K3 or a resistor. In this embodiment, the first switching unit K1 and the second switching unit K2 constitute a first boost unit. The output terminal of the first boost unit is electrically connected to the indicator light 120. The first boost unit can output a voltage that is twice the voltage of the power supply terminal BAT. Of course, in other embodiments of this application, the first boost unit can output a voltage that is a multiple of the voltage of the power supply terminal BAT, such as 1.5 times, 3 times, 4 times, etc.

[0069] In this embodiment, during the first time period, the switch control unit controls the first switch unit K1 to be turned on and the second switch unit K2 to be turned off. At this time, the power supply 110 charges the first capacitor C1 through the power supply terminal BAT and the first switch unit K1. Since the on-state voltage drop of the first switch unit K1 (less than 0.1V) is negligible, the voltage on the first capacitor C1 is charged to the same level as the voltage of the power supply 110. Assuming the voltage of the power supply 110 is Vbat, during the second time period, the switch control unit controls the second switch unit K2 to be turned on and the first switch unit K1 to be turned off. Since the on-state voltage drop of the second switch unit K2 (less than 0.1V) is negligible, the voltage at the second terminal of the second switch unit K2 is the voltage of the power supply 110, which is also Vbat, i.e., the voltage at the second terminal of the first capacitor C1. The voltage at the second terminal is Vbat. Since the voltage on the first capacitor C1 cannot change abruptly, the potential at the first terminal of the first capacitor C1 is raised to Vbat + Vbat, which is 2Vbat, twice the voltage of power supply 110. Therefore, even if power supply 110 is a low-voltage power supply with a voltage operating range of 1.5V-3.6V, and twice Vbat has a voltage range of 3V-7.2V, even if low-voltage power supply 110 operates at the lowest value of its voltage operating range of 1.5V, twice Vbat is 3V, which is still greater than or equal to the minimum forward conduction voltage of indicator light 120. Thus, indicator light 120 can be normally driven by low-voltage power supply 110, and indicator light 120 can work normally within the entire operating range of low-voltage power supply 110. Furthermore, in this embodiment, the charging of the first capacitor C1 is controlled by the first switching unit K1. Since the on-state voltage drop of the first switching unit K1 is almost negligible, compared to the non-negligible on-state voltage drop of the diode (typically 0.7V), for example, when the low-voltage power supply 110 is 1.6V, the voltage on the first capacitor C1 is charged to 0.9V. Therefore, when the second switching unit K2 is turned on, the voltage at the first terminal of the first capacitor C1 is 1.6 + 0.9V, which is 2.5V. This is insufficient to properly drive the indicator light 120 to illuminate, even if the low-voltage power supply 110... As the voltage increases further, the indicator light 120 either fails to illuminate or illuminates dimly, negatively impacting the user experience. This embodiment significantly improves the voltage range within which the low-voltage power supply 110 can drive the indicator light 120. The indicator light 120 operates normally throughout the entire operating range of the low-voltage power supply 110, and when it is driven to illuminate, it is brighter, resulting in a better user experience. Furthermore, this embodiment controls whether to charge the first capacitor C1 and whether to boost the voltage to drive the indicator light 120 via the first switching unit K1. The first switching unit K1 is a controllable element, facilitating control.

[0070] To reduce energy consumption, in this embodiment, the charging element is a third switching unit K3. When a voltage boost is needed, the third switching unit K3 and the first switching unit K1 are simultaneously turned on and off. In other scenarios, the on / off states of the third switching unit K3 and the first switching unit K1 may be asynchronous. The control terminal of the third switching unit K3 is electrically connected to the switch control unit. The first terminal of the third switching unit K3 is electrically connected to the second terminal of the first capacitor C1 and the second terminal of the second switching unit K2. The second terminal of the third switching unit K3 is electrically connected to the power supply terminal BAT. In this embodiment, when the first switching unit K1 and the third switching unit K3 are off, the second switching unit K2 is on. At this time, the branch containing the third switching unit K3 does not consume energy, which is beneficial for energy saving. In addition, in other embodiments of this application, the charging element can also be a resistor. However, with a resistor relative to the third switching unit K3, the branch containing the resistor consumes energy when the second switching unit K2 is on, which is not conducive to energy saving.

[0071] In this embodiment, the first switching unit K1 is a PMOS transistor, the second switching unit K2 is a PMOS transistor, and the third switching unit K3 is an NMOS transistor. However, this application is not limited to this. In other embodiments of this application, the first switching unit K1 can also be an NMOS transistor, the second switching unit K2 can be an NMOS transistor, and the third switching unit K3 can be a PMOS transistor. Furthermore, in other embodiments of this application, the switching types of the first switching unit K1, the second switching unit K2, and the third switching unit K3 can be the same or different. Additionally, in other embodiments of this application, the first switching unit K1, the second switching unit K2, and the third switching unit K3 can also be other field-effect transistors.

[0072] In order to drive the first switch unit K1, in this embodiment, the switch control unit includes a first drive unit 210 and a logic control unit 240. The output terminal of the first drive unit 210 is electrically connected to the control terminal of the first switch unit K1, and the input terminal of the first drive unit 210 is electrically connected to the control terminal of the logic control unit 240, the control terminal of the second switch unit K2, or the control terminal of the third switch unit K3. In this embodiment, the example of the input terminal of the first drive unit 210 being electrically connected to the control terminal of the second switch unit K2 is used for illustration.

[0073] For details, please refer to the following: Figure 1 , Figure 2 and Figure 3The first driving unit 210 includes an inverter (also called a NOT gate) 211, a first NMOS transistor NM1, a second NMOS transistor NM2, a first PMOS transistor PM1, and a second PMOS transistor PM2. The input terminal of the inverter 211 is electrically connected to the control terminal of the second switching unit K2, and the output terminal of the inverter 211 is electrically connected to the control terminal of the first NMOS transistor NM1. The source of the first NMOS transistor NM1 is electrically connected to the power supply ground terminal GND, and the drain of the first NMOS transistor NM1 is electrically connected to the drain of the first PMOS transistor PM1 and the control terminal of the second PMOS transistor PM2, respectively. The first PMOS transistor PM1 is electrically connected to the drain of the second NMOS transistor NM2. The source of the first PMOS transistor PM1 is electrically connected to the first terminal of the first capacitor C1. The source of the second NMOS transistor is electrically connected to the power ground terminal GND. The control terminal of the second NMOS transistor is electrically connected to the control terminal of the second switching unit K2. The drain of the second NMOS transistor NM2 is also electrically connected to the drain of the second PMOS transistor PM2. The source of the second PMOS transistor PM2 is electrically connected to the first terminal of the first capacitor C1. The drain of the second NMOS transistor NM2 is also used to control whether the first switching unit K1 is turned on. In this embodiment, the drain of the second NMOS transistor NM2 is directly electrically connected to the control terminal of the first switching unit K1. However, this application is not limited to this. In other embodiments of this application, in order to improve the driving capability, multiple inverters 211 can be provided between the drain of the second NMOS transistor NM2 and the control terminal of the first switching unit K1, such as 2, 4, or 6 inverters 211. The inverters 211 are, for example, composed of CMOS transistors. In other embodiments of this application, when the first switching unit K1 is an NMOS transistor, the first driving unit 210 further includes a second boost circuit. The second boost circuit is used to drive the first switching unit K1 to turn on. The voltage boosted by the second boost circuit is greater than the voltage of the power supply 110. The second boost circuit can be a conventional boost circuit in the art, such as a boost circuit, a charge pump, etc., which will not be described in detail here.

[0074] In order to drive the second switching unit K2 and the third switching unit K3, in this embodiment, please refer to [reference needed]. Figure 1 , Figure 2 and Figure 3 The switch control unit includes a second drive unit 220 and a third drive unit 230. The second drive unit 220 is electrically connected to the control terminal of the second switch unit K2, and the third drive unit 230 is electrically connected to the control terminal of the third switch unit K3.

[0075] Specifically, the second driving unit 220 includes a third NMOS transistor NM3 and a third PMOS transistor PM3. The source of the third NMOS transistor NM3 is electrically connected to the power ground terminal GND, the control terminal of the third NMOS transistor NM3 is electrically connected to the logic control unit 240, the drain of the third NMOS transistor NM3 is electrically connected to the drain of the third PMOS transistor PM3, the control terminal of the third PMOS transistor PM3 is electrically connected to the logic control unit 240, and the source of the third PMOS transistor PM3 is electrically connected to the power supply terminal BAT. The drain of the third NMOS transistor NM3 is also used to control whether the second switching unit K2 is turned on. In this embodiment, the drain of the third NMOS transistor NM3 is directly electrically connected to the control terminal of the second switching unit K2. However, this application is not limited to this. In other embodiments of this application, to improve the driving capability, multiple inverters 211 can be provided between the drain of the third NMOS transistor NM3 and the control terminal of the second switching unit K2, for example, 2, 4, or 6 inverters 211 can be provided.

[0076] In this embodiment, the third driving unit 230 includes a fourth NMOS transistor NM4 and a fourth PMOS transistor PM4. The source of the fourth NMOS transistor NM4 is electrically connected to the power supply ground terminal GND, the control terminal of the fourth NMOS transistor NM4 is electrically connected to the logic control unit 240, the drain of the fourth NMOS transistor NM4 is electrically connected to the drain of the fourth PMOS transistor PM4, the control terminal of the fourth PMOS transistor PM4 is electrically connected to the logic control unit 240, and the source of the fourth PMOS transistor PM4 is electrically connected to the power supply terminal BAT. The drain of the fourth NMOS transistor NM4 is used to control whether the third switching unit K3 is turned on. In this embodiment, the drain of the fourth NMOS transistor NM4 is directly electrically connected to the control terminal of the third switching unit K3. However, this application is not limited to this. In other embodiments of this application, in order to improve the driving capability, multiple inverters 211 can be provided between the drain of the fourth NMOS transistor NM4 and the control terminal of the third switching unit K3, for example, 2, 4, or 6 inverters 211 can be provided.

[0077] In this embodiment, the logic control unit 240 includes a first logic gate 241 and a second logic gate 242. The first logic gate 241 has a first input terminal, a second input terminal, and a third input terminal. The first input terminal of the first logic gate 241 is connected to a clock signal CLK, the second input terminal is connected to an enable signal, and the third input terminal is electrically connected to the control terminal of the third switching unit K3. The second logic gate 242 has a first input terminal and a second input terminal. The first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switching unit K2, and the second input terminal of the second logic gate 242 is connected to the clock signal CLK. In this embodiment, the first logic gate 241 is a NOR gate, and the second logic gate 242 is a NAND gate. In this embodiment, when the enable signal is high, the first switch unit K1 is normally on, and the second switch unit K2 is normally off. The indicator light 120 will not be lit. When both the enable signal and the third input are low, the first switch unit K1, the third switch unit K3, and the second switch unit K2 are controlled by the clock signal CLK. Furthermore, since the third input of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3, and the first input of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2, the second switch unit K2 and the third switch unit K3 will not be on simultaneously; one will be on while the other is off. In other embodiments of this application, the first logic gate 241 can be other logic gate circuits, achieving the effect of a NOR gate, and the second logic gate 242 can also be other logic gate circuits, achieving the effect of a NAND gate. In this embodiment, the clock signal CLK is a periodic pulse signal. One period of the clock signal CLK includes a first time period and a second time period. During the first time period, the clock signal is at a high level, and during the second time period, the clock signal is at a low level. The frequency of the clock signal CLK is greater than or equal to 50Hz. The period of the clock signal CLK is also the charging and discharging period of the first capacitor C1. When the indicator light 120 needs to be lit, it is also the lighting period of the indicator light 120. Setting such a high frequency can prevent the human eye from distinguishing the flickering of the indicator light 120.

[0078] In this embodiment, the system control circuit also includes a clock signal generation unit and a lamp control unit 250. The lamp control unit 250 is used to control whether the indicator light 120 is lit. The clock signal generation unit is used to generate a clock signal. The enable terminal of the clock signal generation unit is electrically connected to the lamp control unit 250. When the lamp control unit 250 controls the indicator light 120 to light up, the lamp control unit 250 controls the clock signal generation unit to work to generate a clock signal. When the lamp control unit 250 controls the indicator light 120 to turn off, the lamp control unit 250 controls the clock signal generation unit to stop working. This setting helps to reduce the power consumption of the clock signal generation unit.

[0079] In order to effectively control whether the indicator light 120 is lit and prevent the indicator light 120 from being lit when it is not needed, in this embodiment, please continue to refer to... Figures 1-3 The system control circuit 200 also includes a fourth switch unit K4, which is connected in series with the indicator light 120. In this embodiment, the first terminal of the fourth switch unit K4 is electrically connected to the second terminal of the indicator light 120 via a current-limiting resistor Rx. The second terminal of the fourth switch unit K4 is electrically connected to the power ground terminal GND. The control terminal of the fourth switch unit K4 is electrically connected to the lamp illumination control unit 250, which controls whether the fourth switch unit K4 is turned on. The indicator light 120 can only light up when the fourth switch unit K4 is turned on, and the lamp illumination control unit 250 will only control the fourth switch unit K4 to turn on when the indicator light 120 needs to be lit. In addition, in other embodiments of this application, the current-limiting resistor Rx may not be provided on the branch where the indicator light 120 and the fourth switch unit K4 are located. In addition, in other embodiments of this application, please refer to [reference needed]. Figure 4 and Figure 5 The fourth switch unit K4 can also be located between the indicator light 120 and the second terminal of the first switch unit K1. Specifically, the first terminal of the fourth switch unit K4 is electrically connected to the first terminal of the first switch unit K1, and the second terminal of the fourth switch unit K4 is electrically connected to the first terminal of the indicator light 120 via a current-limiting resistor Rx. The second terminal of the indicator light 120 is electrically connected to the power ground terminal GND. The control terminal of the fourth switch unit K4 is electrically connected to the lamp lighting control unit 250. Here, the fourth switch unit K4 is a PMOS transistor. Alternatively, in other embodiments of this application, the fourth switch unit K4 can be replaced with a current source. In this case, the current source is connected in series with the indicator light 120, and the control terminal of the current source is electrically connected to the lamp lighting control unit 250. The lamp lighting control unit 250 controls whether the current source works. The indicator light 120 can only be lit when the current source works; when the lamp lighting control unit 250 controls the current source not to work, the indicator light 120 will not light up. Furthermore, in other embodiments of this application, the current-limiting resistor Rx may not be provided on the branch where the fourth switch unit K4 and the indicator light 120 are located.

[0080] Please continue reading Figure 3In this embodiment, the light control unit 250 is used to output an enable signal. That is, the light control unit 250 is electrically connected to the second input terminal of the first logic gate 241. When the indicator light 120 does not need to be lit, the light control unit 250 controls the fourth switch unit K4 to turn off. Simultaneously, the light control unit 250 outputs a high-level enable signal, the first switch unit K1 is normally on, and the second switch unit K2 is normally off. Thus, the first capacitor C1 is charged. Even if the fourth switch unit K4 is mistakenly turned on, the indicator light 120 will not be lit, forming a dual mechanism to prevent the indicator light 120 from being accidentally lit. When the indicator light 120 needs to be lit, the light control unit 250 controls the fourth switch unit K4 to turn on. Simultaneously, the light control unit 250 outputs a low-level enable signal. Thus, the charging and discharging of the first capacitor C1 is periodically controlled by the clock signal, causing the indicator light 120 to periodically brighten and dim. In this embodiment, the fourth switching unit K4 is a MOS transistor, which can be an NMOS transistor or a PMOS transistor. In this embodiment, it is an NMOS transistor. The first terminal of the fourth switching unit K4 is the drain, and the second terminal is the source. Alternatively, in other embodiments of this application, the fourth switching unit K4 can also be a transistor, in which case the first terminal is the collector, and the second terminal is the emitter. Furthermore, to control the current flowing through the indicator light 120, a current-limiting resistor Rx is connected in series on the branch containing the fourth switching unit K4 and the indicator light 120. The current-limiting resistor Rx can be located between the fourth switching unit K4 and the indicator light 120, between the indicator light 120 and the first terminal of the first capacitor C1, or between the fourth switching unit K4 and the power ground terminal GND.

[0081] In this embodiment, the system control circuit 200 also includes a status detection unit (not shown in the figure). The status detection unit is, for example, a smoking detection unit, a charging detection unit, or other units related to whether the indicator light 120 needs to be lit. When it is a smoking detection unit, the smoking detection unit is electrically connected to the airflow sensor 140, such as the microphone or MEMS sensor. The status detection unit is electrically connected to the light control unit 250. When the status detection unit detects that the user is inhaling the electronic atomizing device or that the electronic atomizing device is charging, the status detection unit outputs a signal to the light control unit 250. The light control unit 250 outputs a signal to the fourth switch unit K4 and the logic control unit 240, thereby controlling the indicator light 120 to light up. That is, the light control unit 250 controls whether the indicator light 120 is lit by receiving the output signal from the status detection unit.

[0082] In this embodiment, please refer to [reference needed]. Figures 1-3The system control circuit 200 is located on the same chip. The power supply terminal BAT is the power supply pin BAT, and the power ground terminal GND is the power ground pin GND. The chip also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3. The first light-emitting pin FG1 is used to electrically connect to the first terminal of the first capacitor C1 and the first terminal of the indicator light 120. The second light-emitting pin FG2 is used to electrically connect to the second terminal of the first capacitor C1. The third light-emitting pin FG3 is used to electrically connect to the second terminal of the indicator light 120 and the fourth switch unit K4. In this embodiment, the chip also includes an airflow detection pin SW and an atomization pin AT. The airflow detection pin SW is electrically connected to an airflow detection element, such as an airflow sensor 140, which can be a capacitive microphone, a switch microphone, a MEMS sensor, etc. The airflow detection pin SW is electrically connected to a status detection unit. The status detection unit and the airflow sensor 140 can detect whether the electronic atomizing device is being drawn in. The atomization pin AT is used to electrically connect to the heating wire 130. In other embodiments of this application, a first capacitor C1 may also be integrated on the chip, in which case the second light-emitting pin FG2 is not required. Additionally, in other embodiments of this application, the chip may also integrate an airflow sensor 140, meaning the airflow sensor 140 and the system control circuit 200 are located on the same chip. Furthermore, for other embodiments of this application, please refer to... Figure 4 and Figure 5 The chip also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3. The first light-emitting pin FG1 is used to electrically connect to the first terminal of the first capacitor C1 and the first terminal of the fourth switching unit K4. The second light-emitting pin FG2 is used to electrically connect to the second terminal of the first capacitor C1. The third light-emitting pin FG3 is used to electrically connect to the second terminal of the fourth switching unit K4 and the first terminal of the indicator light 120. The second terminal of the indicator light 120 is electrically connected to the power ground pin GND.

[0083] In addition, in other embodiments of this application, a voltage regulator capacitor may be provided between the first light-emitting pin FG1 and the power ground terminal GND. The voltage regulator capacitor is used to make the light emission of the indicator light 120 more stable when it is lit, so that it does not flicker.

[0084] Additionally, please refer to other embodiments of this application. Figure 6The switch control unit may also exclude the second and third drive units, with the control terminals of the second and third switch units electrically connected to the logic control unit. The logic control unit includes an OR gate 243, where the first input of the OR gate 243 is connected to a clock signal CLK, the second input is connected to an enable signal, and the output of the OR gate 243 is electrically connected to the control terminals of the first drive unit, the second switch unit K2, and the third switch unit K3, respectively.

[0085] Generally speaking, since the voltage range of the low-voltage power supply 110 is relatively large, when the voltage of the low-voltage power supply 110 is relatively high, for example, when the voltage of the low-voltage power supply 110 is higher than 3V, after the first capacitor C1 is charged, when the switch control unit controls the second switch unit K2 to conduct and the first switch unit K1 and the third switch unit K3 to be cut off, the voltage at the second terminal of the first switch unit K1 is twice the voltage of the power supply 110, which is higher than 6V. However, when the switch control unit controls the first switch unit K1 to prepare to conduct, because the control terminal of the first switch unit K1 drops to 0V quickly, it takes a certain amount of time for the first switch unit K1 to conduct. In addition, due to the presence of the first capacitor C1, the first switch unit K1 has not yet conducted. At this time, the voltage between the control terminal and the second terminal of the first switch unit K1 is higher than 6V. To reduce costs, the first switching unit K1 is typically manufactured using a low-voltage process with a voltage of 6V or less. The voltage withstand capability of this low-voltage manufacturing process is less than 6V, and its reliability decreases when the voltage exceeds 6V. This can lead to a significant voltage difference between the control terminal and the second terminal of the first switching unit K1 during the turn-on process, potentially causing damage to the first switching unit K1. In other embodiments of this application, when the first switching unit K1 is an NMOS, it is typically switched off with a 0V voltage. Subsequently, when the second terminal of the first switching unit K1 is boosted to twice the power supply voltage 110, the large voltage difference between the control terminal and the second terminal can also damage the first switching unit K1. Furthermore, when the first switching unit K1 is turned off, a voltage spike occurs. If the voltage of the low-voltage power supply 110 is relatively high, and it is boosted through the first capacitor C1, the voltage spike will also be boosted. Since the voltage of power supply 110 is relatively high, the boosted voltage spike will be even higher, potentially exceeding 9V, which could easily damage the first switching unit K1 and the indicator light 120. Additionally, when using a normal power supply 110 or a low-voltage power supply 110 with a relatively high voltage, boosting the voltage will reduce efficiency and energy efficiency, and will also more easily damage the first switching unit K1 or other components. To address this problem, this application provides a second and a third embodiment.

[0086] Second Embodiment

[0087] Please see Figure 7 , Figure 7 This is a circuit block diagram of the system control circuit of the second embodiment of this application. This embodiment is similar to the first embodiment. Therefore, the parts not described in this embodiment can be referred to the first embodiment. The main difference between this embodiment and the first embodiment is that it also includes a power supply judgment unit.

[0088] Please see Figure 7 In this embodiment, the system control circuit 200 further includes a power supply judgment unit 360. The power supply judgment unit 360 is electrically connected to the power supply terminal BAT and the power ground terminal GND to obtain a detection voltage characterizing the voltage of the power supply terminal BAT. The power supply judgment unit 360 determines whether the detection voltage is greater than a first reference voltage. The detection voltage can be equal to the voltage of the power supply terminal BAT, or it can be proportional to the voltage of the power supply terminal BAT, i.e., K*Vbat, where K is a positive number less than 1. When the power supply judgment unit 360 determines that the detection voltage is greater than the first reference voltage, the system control circuit 200 operates in a first mode. When the power supply judgment unit 360 determines that the detection voltage is less than the first reference voltage, the system control circuit 200 operates in a second mode. In this embodiment, in the first mode, the voltage of the power supply terminal BAT is directly used to drive the indicator light 120 without voltage boosting. In the second mode, the voltage of the power supply terminal BAT is boosted and then used to drive the indicator light 120.

[0089] In this embodiment, please refer to [reference needed]. Figures 7-9 The power supply judgment unit 360 includes a voltage comparison unit 361. A first reference voltage is connected to the first input terminal of the voltage comparison unit 361, and a detection voltage is connected to the second input terminal of the voltage comparison unit 361. The detection voltage reflects the magnitude of the voltage at the power supply terminal BAT, i.e., the magnitude of the voltage of the power supply 110. The enable terminal of the voltage comparison unit 361 is electrically connected to the lamp control unit 250, and the output terminal of the voltage comparison unit 361 is electrically connected to the second input terminal of the first logic gate 241. In other words, the second input terminal of the first logic gate 241 is electrically connected to the lamp control unit 250 via the voltage comparison unit 361. In this embodiment, when the indicator light 120 is not required to be lit, the lamp control unit 250 controls the voltage comparison unit 361 to stop working via the enable terminal; when the indicator light 120 is required to be lit, the lamp control unit 250 controls the voltage comparison unit 361 to work normally via the enable terminal.

[0090] In this embodiment, when the voltage comparison unit 361 is working normally, when the detected voltage is higher than the first reference voltage, the voltage comparison unit 361 outputs a first signal to make the system control circuit 200 work in the first mode. At this time, the voltage comparison unit 361 outputs a high level to the first logic gate 241, the first switch unit K1 is normally on, and the second switch unit K2 is normally off. At this time, the voltage of the power supply terminal BAT directly drives the indicator light 120. In this embodiment, the first switch unit K1 is included in the first power supply unit. The first power supply unit is used to make the voltage of the power supply terminal BAT drive the indicator light 120 without boosting the voltage. When the detected voltage is less than the first reference sub-voltage, the voltage comparison unit 361 outputs a second signal to make the system control circuit 200 work in the second mode. At this time, the voltage comparison unit 361 outputs a low level to the first logic gate 241. During the first time period, the clock signal is at a high level. During this time period, the clock signal controls the first switch unit K1 and the third switch unit K3 to be turned on, and the second switch unit K2 to be turned off. The first capacitor C1 is charged. During the second time period, the clock signal is at a low level. During this time period, the clock signal drives the first switch unit K1 and the third switch unit K3 to be turned off, and the second switch unit K2 to be turned on. The potential of the first terminal of the first capacitor C1 is raised. The first capacitor C1 supplies power to the indicator light 120, and the indicator light 120 is lit. In this embodiment, the first switch unit K1 and the second switch unit K2 are included in the second power supply unit. The second power supply unit is used to boost the voltage of the power supply terminal BAT so that the boosted voltage drives the indicator light 120. In this embodiment, the second power supply unit includes the first power supply unit. In this embodiment, one cycle of the clock signal includes a first time period and a second time period. The clock signal is a periodic pulse signal, and the indicator light 120 cycles on and off in accordance with the clock signal. Because the clock signal has a high frequency, the human eye cannot distinguish the blinking of the indicator light 120. In this embodiment, the first signal is high-level and the second signal is low-level. However, this application is not limited to this. In other embodiments of this application, the first signal is low-level and the second signal is high-level. The high and low levels can be converted by adding an inverter 211 as needed. In this embodiment, the dimming of the indicator light 120 can mean that the indicator light 120 is off, or it can mean that the brightness of the indicator light 120 is lower than that when the indicator light 120 is on.

[0091] In this embodiment, the first input terminal of the voltage comparison unit 361 is the inverting terminal, and the second input terminal of the voltage comparison unit 361 is the non-inverting terminal. However, this application is not limited to this. In other embodiments of this application, the first input terminal may also be the non-inverting terminal of the voltage comparison unit 361, and the second input terminal may be the inverting terminal of the voltage comparison unit 361. In addition, in other embodiments of this application, the second power supply unit may not include the first power supply unit. In this case, the first power supply unit includes a fifth switch unit. The control terminal of the fifth switch unit is electrically connected to the switch control unit. The first terminal of the fifth switch unit is electrically connected to the power supply terminal BAT. The second terminal of the fifth switch unit is used to electrically connect to the indicator light 120. The switch control unit includes a fifth drive unit. The output terminal of the fifth drive unit is electrically connected to the control terminal of the fifth switch unit. The input terminal of the fifth drive unit is electrically connected to the logic control unit 240, the first drive unit 210, the second drive unit 220, or the third drive unit 230. The specific circuit of the fifth drive unit can refer to the first drive unit 210, and will not be described again here. The second power supply unit includes a first booster. The first boost unit has a first terminal electrically connected to the power supply terminal BAT, and its second terminal electrically connected to the indicator light 120. The control terminal of the first boost unit is electrically connected to the switch control unit. The first boost unit includes a second switch unit K2 and a first switch unit K1. The first terminals of the second switch unit K2 and the first switch unit K1 are both electrically connected to the power supply terminal BAT. The second terminal of the first switch unit K1 is electrically connected to the first terminal of the first capacitor C1 and the indicator light 120. The control terminal of the first switch unit K1 is electrically connected to the switch control unit. The control terminal of the second switch unit K2 is electrically connected to the switch control unit, and its second terminal is electrically connected to the second terminal of the first capacitor C1. Its second terminal is also indirectly connected to the power ground terminal GND. In the second mode, during the first time period, the switch control unit controls the first switch unit K1 to be turned on and the second switch unit K2 to be turned off to charge the first capacitor C1. During the second time period, the switch control unit controls the second switch unit K2 to be turned on and the first switch unit K1 to be turned off so that the potential of the first terminal of the first capacitor C1 is raised to drive the indicator light 120. In the second mode, the fifth switch unit remains normally off. In the first mode, the first switch unit K1 and the second switch unit K2 remain normally off, and the fifth switch unit remains normally on.

[0092] In this embodiment, the power supply judgment unit 360 further includes a first voltage divider resistor Rf1 and a second voltage divider resistor Rf2. The first end of the first voltage divider resistor Rf1 is electrically connected to the power supply terminal BAT, the second end of the first voltage divider resistor Rf1 is electrically connected to the first end of the second voltage divider resistor Rf2, the second end of the second voltage divider resistor Rf2 is electrically connected to the power supply ground terminal GND, and the first end of the second voltage divider resistor Rf2 is electrically connected to the second input terminal of the voltage comparison unit 361 for outputting the detection voltage. In this embodiment, the first voltage divider resistor Rf1 and the second voltage divider resistor Rf2 divide the voltage at the power supply terminal BAT, thereby detecting a voltage equal to K*Vbat, where K is a positive number less than 1. The specific voltage value is as follows:

[0093] Vs = Vbat * Rfz2 / (Rfz1 + Rfz2)

[0094] Where Vs is the voltage value of the detection voltage, Vbat is the voltage at the power supply terminal BAT, Rfz1 is the resistance value of the first voltage divider resistor Rf1, and Rfz2 is the resistance value of the second voltage divider resistor Rf2.

[0095] In other embodiments of this application, the detected voltage is directly the voltage of the power supply terminal BAT, that is, the second input terminal of the voltage comparison unit 361 is directly electrically connected to the power supply terminal BAT. In this case, the range of the first reference voltage is, for example, 2.8V-3.2V, such as 2.8V, 2.9V, 3V, 3.1V, 3.2V, preferably 3V. In this embodiment, the detected voltage is not equal to the voltage of the power supply terminal BAT, and the ratio of the detected voltage to the voltage of the power supply terminal BAT is Rfz2 / (Rfz1+Rfz2). Therefore, the first reference voltage is also reduced proportionally. In this case, the range of the first reference voltage is, for example,

[0096] 2.8*Rfz2 / (Rfz1+Rfz2)V-3.2*Rfz2 / (Rfz1+Rfz2)V, preferably 3*Rfz2 / (Rfz1+Rfz2)V. For example, when the resistance value of the first voltage divider resistor Rf1 is equal to the resistance value of the second voltage divider resistor Rf2, the range of the first reference voltage is, for example, 1.4V-1.6V, or for example, 1.5V.

[0097] In this embodiment, the clock signal generation unit in the first mode stops working, which helps to reduce the power consumption of the clock signal generation unit.

[0098] This embodiment adds a power supply determination unit 360, which has the following advantages:

[0099] 1. When the voltage of power supply 110 is relatively high, it is sufficient to drive indicator light 120, and the brightness is relatively bright. At this time, the power supply judgment unit 360 determines that the detected voltage is greater than the first reference voltage, and then controls the control circuit 200 to operate in the first mode. In the first mode, indicator light 120 is directly driven by the voltage at the power supply terminal BAT, without the need for voltage boosting, which helps improve the energy utilization rate of power supply 110. Furthermore, when the voltage of power supply 110 is relatively low, the power supply judgment unit 360 determines that the detected voltage is less than the first reference voltage, and then controls the control circuit 200 to operate in the second mode. In the second mode, the voltage at the power supply terminal BAT is boosted to drive indicator light 120. Therefore, even if the voltage of power supply 110 is relatively low, it can still be boosted to normally illuminate indicator light 120, and the brightness is relatively bright, which is beneficial for the normal use of indicator light 120 and prevents the indicator light 120 from becoming dimmer during use.

[0100] 2. The power supply voltage range provided by the electronic atomizing device in this embodiment includes 1.5V-5V. For example, the power supply voltage range provided by the power supply is 1.5V-3.6V, 2.5V-4.2V, or 3V-5V, etc. That is, the power supply can use either a low-voltage power supply 110 or a general power supply 110. In other words, the power supply 110 can be used interchangeably, which facilitates the assembly of the electronic atomizing device. Moreover, it is not necessary to set up corresponding system control circuits according to different power supplies 110. The system control circuit in this embodiment is universal, which can improve the time competitiveness of the system control circuit. When the electronic atomizing device uses a standard power supply 110 and the voltage is not too low, the power supply judgment unit 360 determines that the detected voltage is greater than the first reference voltage. Therefore, the power supply judgment unit 360 controls the control circuit 200 to operate in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage at the power supply terminal BAT. At this time, the indicator light 120 is directly driven by the power supply 110 without needing a voltage boost. When the electronic atomizing device uses a low-voltage power supply 110 and the voltage is not too high, the power supply judgment unit 360 determines that the detected voltage is less than the first reference voltage. Therefore, the power supply judgment unit 360 controls the control circuit 200 to operate in the second mode. In the second mode, the voltage at the power supply terminal BAT is boosted to drive the indicator light 120 to illuminate, and the brightness is similar to that using the standard power supply 110. Thus, the electronic atomizing device in this embodiment can use both types of power supplies 110, and the electronic atomizing device will not be damaged regardless of which power supply 110 is used.

[0101] 3. The enable terminal of the voltage comparison unit 361 of the power supply judgment unit is also electrically connected to the lamp control unit 250. The lamp control unit 250 controls whether the voltage comparison unit 361 works. When the indicator light 120 needs to be lit, the lamp control unit 250 controls the voltage comparison unit 361 to work. When the indicator light 120 does not need to be lit, the lamp control unit 250 controls the voltage comparison unit 361 to not work. By setting it in this way, the standby power consumption of the voltage comparison unit 361 can be reduced, which is beneficial to energy saving.

[0102] 4. In this embodiment, the first switching unit K1 is a MOSFET. MOSFETs are generally manufactured using a low-voltage process with a voltage of less than or equal to 6V (high-voltage processes are more expensive), which helps reduce costs. MOSFETs manufactured using low-voltage processes have relatively low voltage ratings. When the power supply voltage 110 is relatively high, if the voltage is boosted, for example, to twice the power supply voltage 110, the voltage across the control terminal and the second terminal of the first switching unit K1 will be relatively high at certain times, exceeding the MOSFET's limit parameters, potentially damaging the first switching unit K1. This embodiment addresses this by setting a power supply judgment unit 360. When the detection voltage of the power supply terminal BAT is relatively high (greater than the first reference voltage), no boosting is performed; when the detection voltage of the power supply terminal BAT is relatively low (less than the first reference voltage), boosting is performed. The boosted voltage (generally lower than 6V) is also lower than the MOSFET's voltage rating, thus preventing the two terminals of the first switching unit K1 from experiencing excessively high voltages. The first switching unit K1 is less prone to damage, its reliability is not reduced, and it can still normally drive the indicator light 120. Moreover, the voltage spike experienced by the first switching unit K1 when it is turned off will be relatively small, and the first switching unit K1 and indicator light 120 are not easily damaged.

[0103] Third Embodiment

[0104] Please see Figure 10 , Figure 10 This is a circuit block diagram of the system control circuit of the third embodiment of this application. This embodiment is similar to the first embodiment. Therefore, the parts not described in this embodiment can be referred to the first embodiment. The main difference between this embodiment and the first embodiment is that it also includes a step-down unit.

[0105] Please see Figure 10 In this embodiment, the system control circuit 200 further includes a step-down unit 470, which is a low dropout regulator (LDO). Please refer to [reference needed]. Figures 10-12The low-dropout linear regulator includes a regulating transistor 472, an operational amplifier 471, a first sampling resistor Rc1, and a second sampling resistor Rc2. In this embodiment, the regulating transistor 472 is a MOS transistor, such as an NMOS transistor or a PMOS transistor (the figure uses a PMOS transistor as an example for illustration). The source of the MOS transistor is electrically connected to the power supply terminal BAT, and the drain of the MOS transistor serves as the output terminal, which is electrically connected to the first terminal of the first switching unit K1 and the first terminal of the second switching unit K2. The first terminal of the first sampling resistor Rc1 is electrically connected to the drain of the MOS transistor, and the second terminal of the first sampling resistor Rc1 is electrically connected to the first terminal of the second sampling resistor Rc2. The second terminal of the second sampling resistor Rc2 is electrically connected to the power supply ground terminal GND. The non-inverting terminal of the operational amplifier 471 is connected to a second reference voltage, and the inverting terminal of the operational amplifier 471 is electrically connected to the second terminal of the first sampling resistor Rc1 to obtain a sampling voltage. The output terminal of the operational amplifier 471 is electrically connected to the control terminal of the MOS transistor. In other embodiments of this application, those skilled in the art will also know that the regulating transistor 472 can be set as a transistor, which will not be described in detail here. This embodiment uses a low-dropout linear regulator for voltage reduction, which can achieve high efficiency, low cost, low noise, and low quiescent current. In other embodiments of this application, the step-down unit 470 can also be a conventional buck circuit. Since the buck circuit is a conventional conversion circuit in the art, it will not be described in detail here.

[0106] The working principle of the low dropout linear regulator is as follows: the sampled voltage is applied to the inverting input of the operational amplifier 471 and compared with the second reference voltage applied to the non-inverting input. The difference between the two is amplified by the operational amplifier 471 and controls the voltage drop of the regulating transistor 472, thereby stabilizing the output of the preset voltage (when the voltage at the power supply terminal is high). Generally, the ratio of the second reference voltage to the preset voltage is Rcz2 / (Rcz1+Rcz2), where Rcz1 is the resistance value of the first sampling resistor Rc1 and Rcz2 is the resistance value of the second sampling resistor Rc2. When the output voltage decreases, the difference between the second reference voltage and the sampling voltage increases, the drive current of the operational amplifier 471 increases, the transistor voltage drop decreases, and thus the output voltage rises. Conversely, if the output voltage exceeds the preset voltage, the drive current of the operational amplifier 471 decreases, and thus the output voltage decreases. Therefore, the output voltage of the low-dropout linear regulator is less than (when the power supply voltage is low) or equal to the preset voltage. When the voltage of the power supply terminal BAT is higher than the preset voltage, the output voltage of the low-dropout linear regulator will drop to the preset voltage. When the voltage of the power supply terminal BAT is lower than or equal to the preset voltage, the regulating transistor 472 is always on, and the output voltage of the low-dropout linear regulator is equal to the voltage of the power supply terminal BAT. Therefore, the output voltage of the low-dropout linear regulator will be less than or equal to the preset voltage.

[0107] In this embodiment, please continue to refer to Figure 12 The first switching unit K1 and the second switching unit K2 constitute the first boost unit. When the first switching unit K1 is turned on and the second switching unit K2 is turned off, it is used to charge the first capacitor C1. When the first switching unit K1 is turned off and the second switching unit K2 is turned on, the potential of the first terminal of the first capacitor C1 is boosted to twice the voltage of the output terminal of the buck unit 470. This voltage will be less than or equal to twice the preset voltage, which can better drive the indicator light 120. The connection and driving relationship between the first switching unit K1 and the second switching unit K2 have been described in the first and second embodiments, and will not be repeated here. In this embodiment, regardless of whether the voltage at the power supply terminal BAT is high or low, the voltage at the power supply terminal BAT is stepped down to a preset voltage or less than a preset voltage by the step-down unit 470, and then stepped up by the first boost unit. Since the preset voltage can be controlled to be low, the maximum value of the final boosted voltage can also be controlled. Therefore, the voltage between the control terminal and the second terminal of the first switching unit K1 will not be large, generally below 6V, which will not exceed the withstand voltage of the MOSFET. The first switching unit K1 is not easily damaged, and it can also drive the indicator light 120 normally. Moreover, since the output voltage of the step-down unit 470 is less than or equal to the preset voltage, even after being boosted by the first boost unit, the voltage spike experienced by the first switching unit K1 when it is turned off will be relatively small, and the first switching unit K1 and the indicator light 120 are not easily damaged.

[0108] In this embodiment, the preset voltage is less than 3V. Preferably, the preset voltage range is 1.5V-3V, such as 1.5V, 1.6V, 1.7V, 1.8V, 1.9V, 2V, 2.1V, 2.2V, 2.3V, 2.4V, 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3V, etc. For example, 2V. When the voltage at the power supply terminal BAT is greater than 2V, the buck unit 470 reduces the voltage at the power supply terminal BAT and outputs a voltage of 2V. When the voltage at the power supply terminal BAT is less than 2V, the regulating transistor 472 remains constantly on, and the output of the buck unit 470 is equal to the voltage at the power supply terminal BAT. In addition, in other embodiments of this application, the voltage boosted by the first boost unit at the output terminal of the buck unit 470 is not limited to twice, but can also be set to other multiples as needed, such as 1.5 times, 3 times, 4 times, etc. In this case, the preset voltage can be adjusted as needed. In other embodiments of this application, the first boost unit may also be a boost circuit. Since boost circuits are conventional circuits in the art, they will not be described in detail here.

[0109] In this embodiment, the enable terminal of operational amplifier 471 is electrically connected to the lamp control unit 250, and the lamp control unit 250 is not electrically connected to the second input terminal of the first logic gate 241. When the indicator light 120 is not needed, the lamp control unit 250 controls the operational amplifier 471 to not work; when the indicator light 120 is needed, the lamp control unit 250 controls the operational amplifier 471 to work. This configuration ensures that the operational amplifier 471 only works when the indicator light 120 is lit, and remains inactive at other times, which helps reduce energy consumption. In this embodiment, the lamp control unit 250 controls whether the operational amplifier 471 works through its enable terminal. When the lamp control unit 250 needs the indicator light 120 to work, it controls the operational amplifier 471 to work through its enable terminal; when the lamp control unit 250 does not need the indicator light 120 to work, it controls the operational amplifier 471 to stop working through its enable terminal. In other embodiments of this application, the enable terminal of the operational amplifier 471 may not be electrically connected to the lamp control unit 250. In this case, the lamp control unit 250 cannot control whether the operational amplifier 471 works, the operational amplifier 471 is always working, and the lamp control unit 250 is electrically connected to the second input terminal of the first logic gate 241.

[0110] This embodiment, by setting a step-down unit 470, with the output terminal of the step-down unit 470 electrically connected to the input terminal of the first boost unit, has the following advantages:

[0111] 1. In this embodiment, the switching unit in the first boost unit is generally a MOSFET. MOSFETs are generally manufactured using a low-voltage process (high-voltage processes are more expensive), which helps reduce costs. MOSFETs manufactured using a low-voltage process have a relatively low withstand voltage. When the voltage of the power supply 110 is relatively high and greater than the preset voltage, the buck unit 470 can stabilize its output voltage at the preset voltage. When the voltage of the power supply 110 is relatively low and less than or equal to the preset voltage, the output voltage of the buck unit 470 is less than or equal to the preset voltage. Then, the output voltage of the buck unit 470 is boosted by the first boost unit. The boosted voltage will be lower than the withstand voltage of the MOSFET. Therefore, the switching unit in the first boost unit will not bear a relatively large voltage and will not exceed the limit parameters of the MOSFET. The switching unit in the first boost unit is not easily damaged, and the reliability will not be reduced. At the same time, the boosted voltage can also drive the indicator light 120 normally. Moreover, since the output voltage of the step-down unit 470 is less than or equal to the preset voltage, even after being boosted by the first boost unit, the voltage spike that the first switch unit K1 experiences when it is turned off will be relatively small, and the first switch unit K1 and the indicator light 120 are not easily damaged.

[0112] 2. The power supply voltage range provided by the electronic atomizing device in this embodiment includes 1.5V-5V. For example, the power supply voltage range is 1.5V-3.6V, 2.5V-4.2V, or 3V-5V, etc. That is, the power supply can use either a low-voltage power supply 110 or a general power supply 110, meaning that the power supply 110 can be used interchangeably. This facilitates the assembly of the electronic atomizing device and eliminates the need to set up corresponding system control circuits for different power supplies 110. The system control circuit in this embodiment is universal, which can improve the time competitiveness of the system control circuit. In this embodiment, regardless of whether the electronic atomizing device uses a low-voltage power supply 110 or a general power supply 110, its output voltage after passing through the step-down unit 470 will be equal to or lower than the preset voltage. After being boosted by the first boost unit, it can normally drive the indicator light 120, and the boosted voltage will not be too high.

[0113] 3. The enable terminal of the operational amplifier 471 is also electrically connected to the lamp control unit 250. The lamp control unit 250 controls whether the operational amplifier 471 works. When the indicator light 120 needs to be lit, the lamp control unit 250 controls the operational amplifier 471 to work. When the indicator light 120 does not need to be lit, the lamp control unit 250 controls the operational amplifier 471 to not work. By setting it in this way, the power consumption of the operational amplifier 471 can be reduced, which is beneficial to energy saving.

[0114] 4. In this embodiment, the step-down unit 470 preferably uses a low-dropout linear regulator. Low-dropout linear regulators have high step-down efficiency, low cost, low noise, and low quiescent current.

[0115] It should be understood that "a plurality of" as used herein refers to two or more. Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0116] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus embodiments, since they are basically similar to the method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0117] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A system control circuit for driving indicator lights, characterized in that, include: The power supply terminal and the power ground terminal are used to make electrical connections with the positive and negative terminals of the power supply, respectively. The step-down unit is electrically connected to the power supply terminal and the power supply ground terminal, and is used to make the voltage at the output terminal of the step-down unit less than or equal to the preset voltage. The first boost unit has its input terminal electrically connected to the output terminal of the buck unit, and its output terminal is used to be electrically connected to the indicator light. The first boost unit is used to boost the voltage at the output terminal of the buck unit to drive the indicator light. The system includes a light-on control unit and a clock signal generating unit. The light-on control unit is electrically connected to the enable terminal of the step-down unit and the clock signal generating unit. The light-on control unit is used to control whether the indicator light is lit. When the indicator light is lit, it is also used to control the clock signal generating unit to operate to generate a clock signal and to control the step-down unit to operate. When the indicator light is turned off, it is also used to control the clock signal generating unit to stop operating and to control the step-down unit to stop operating. The period of the clock signal is the lighting period of the indicator light. A fourth switch unit or current source is provided, wherein the fourth switch unit or current source is connected in series with the indicator light, and the control terminal of the fourth switch unit or current source is electrically connected to the light-on control unit. The first boost unit includes a first switching unit. The first end of the first switching unit is connected to the output end of the buck unit, the second end of the first switching unit is used to be electrically connected to the indicator light, and the control end of the first switching unit is connected to the switch control unit. The boosted voltage is applied to the second end of the first switching unit. The boosted voltage is preset to not exceed the withstand voltage value of the first switching unit, and the boosted voltage can drive the indicator light normally. The first switching unit is manufactured by a low-voltage process and includes a field-effect transistor.

2. The system control circuit according to claim 1, characterized in that, The step-down unit includes a low-dropout linear regulator. The input terminal of the low-dropout linear regulator is electrically connected to the power supply terminal, and its output terminal is electrically connected to the first boost unit. The low-dropout linear regulator is used to make the voltage at the output terminal less than or equal to a preset voltage.

3. The system control circuit according to claim 2, characterized in that, The low-dropout linear regulator includes an operational amplifier, a first sampling resistor, a second sampling resistor, and a regulating transistor. The first terminal of the regulating transistor is the input terminal of the low-dropout linear regulator, and the second terminal is the output terminal. The control terminal of the regulating transistor is electrically connected to the output terminal of the operational amplifier. The non-inverting terminal of the operational amplifier is connected to a second reference voltage. The inverting terminal of the operational amplifier is electrically connected to the first terminal of the second sampling resistor. The first terminal of the first sampling resistor is electrically connected to the second terminal of the regulating transistor. The second terminal of the first sampling resistor is electrically connected to the first terminal of the second sampling resistor. The second terminal of the second sampling resistor is electrically connected to the power supply ground terminal.

4. The system control circuit according to claim 3, characterized in that, The regulating transistor includes a bipolar transistor or a MOSFET; or, the preset voltage range is 1.5V-3V.

5. The system control circuit according to claim 3, characterized in that, The light control unit is electrically connected to the enable terminal of the operational amplifier to control whether the operational amplifier works. When the light control unit is used to control the indicator light to light up, the light control unit controls the operational amplifier to work. When the light control unit is used to control the indicator light to turn off, the light control unit controls the operational amplifier to stop working.

6. The system control circuit according to claim 1, characterized in that, The buck unit includes a Buck circuit; and / or, the first boost unit includes a boost circuit.

7. The system control circuit according to any one of claims 1-6, characterized in that, The system control circuit includes a switch control unit, which is electrically connected to the power supply terminal and the power ground terminal respectively. The first boost unit includes: The first switching unit has its control terminal electrically connected to the switch control unit, its first terminal electrically connected to the power supply terminal, and its second terminal electrically connected to the indicator light and the first terminal of the first capacitor. The second switching unit has its control terminal electrically connected to the switch control unit, its first terminal electrically connected to the power supply terminal, its second terminal electrically connected to the second terminal of the first capacitor, and its second terminal also indirectly connected to the power ground terminal. The switch control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor. The switch control unit also controls the second switch unit to be turned on and the first switch unit to be turned off to raise the potential of the first terminal of the first capacitor, which is used to drive the indicator light.

8. The system control circuit as described in claim 7, characterized in that, The system control circuit further includes a third switching unit, whose control terminal is electrically connected to the switch control unit, whose first terminal is electrically connected to the second terminal of the first capacitor, and whose second terminal is electrically connected to the power supply ground terminal. When a voltage boost is required, the third switching unit is turned on when the first switching unit is turned on, and the third switching unit is turned off when the first switching unit is turned off.

9. The system control circuit according to claim 7, characterized in that, The switch control unit includes a first drive unit, which is electrically connected to the control terminal of the first switch unit; and... The first switching unit includes a PMOS transistor, and the first driving unit includes an inverter, a first NMOS transistor, a second NMOS transistor, a first PMOS transistor, and a second PMOS transistor. The input terminal of the inverter is electrically connected to the control terminal of the second switching unit, and the output terminal of the inverter is electrically connected to the control terminal of the first NMOS transistor. The source of the first NMOS transistor is electrically connected to the power supply ground terminal, and its drain is electrically connected to the drain of the first PMOS transistor and the control terminal of the second PMOS transistor. The control terminal of the first PMOS transistor is electrically connected to the drain of the second NMOS transistor. The source of the first PMOS transistor is electrically connected to the second terminal of the first switching unit. The source of the second NMOS transistor is electrically connected to the power supply ground terminal, and the control terminal of the second NMOS transistor is electrically connected to the control terminal of the second switching unit. The drain of the second NMOS transistor is also electrically connected to the drain of the second PMOS transistor, and the source of the second PMOS transistor is electrically connected to the second terminal of the first switching unit. The drain of the second NMOS transistor is also used to control whether the first switching unit is turned on; or... The switch control unit further includes a logic control unit, and the input terminal of the first drive unit is electrically connected to the logic control unit; or, The first switching unit includes an NMOS transistor, and the first driving unit includes a second boost circuit. The output terminal of the second boost circuit is electrically connected to the control terminal of the first switching unit, and the input terminal of the second boost circuit is electrically connected to the control terminal of the second switching unit; or... The switch control unit further includes a logic control unit. The first switch unit includes an NMOS transistor, and the first drive unit includes a second boost circuit. The output terminal of the second boost circuit is electrically connected to the control terminal of the first switch unit, and the input terminal of the second boost circuit is electrically connected to the logic control unit; or... The first switching unit is manufactured using a low-voltage process of less than or equal to 6V.

10. The system control circuit as described in claim 7, characterized in that, The switch control unit further includes a second driving unit, which is electrically connected to the control terminal of the second switch unit; the switch control unit also includes a logic control unit, the second switch unit includes a PMOS transistor, and the second driving unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is electrically connected to the power supply ground terminal, the control terminals of the third NMOS transistor and the third PMOS transistor are electrically connected to the logic control unit, the drain of the third NMOS transistor is electrically connected to the drain of the third PMOS transistor, the source of the third PMOS transistor is electrically connected to the power supply terminal, and the drain of the third NMOS transistor is also used to control whether the second switch unit is turned on; or, The switch control unit further includes a logic control unit, which is electrically connected to the control terminal of the second switch unit.

11. The system control circuit according to claim 10, characterized in that, The system control circuit also includes a third switching unit, whose control terminal is electrically connected to the switch control unit, whose first terminal is electrically connected to the second terminal of the second switching unit, and whose second terminal is electrically connected to the power supply ground terminal. The switch control unit further includes a third drive unit, which is electrically connected to the control terminal of the third switch unit, and the logic control unit is electrically connected to the second drive unit and the third drive unit respectively. The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor. The source of the fourth NMOS transistor is electrically connected to the power supply ground terminal. The control terminals of the fourth NMOS transistor and the fourth PMOS transistor are both electrically connected to the logic control unit. The drain of the fourth NMOS transistor is electrically connected to the drain of the fourth PMOS transistor, and the source of the fourth PMOS transistor is electrically connected to the power supply terminal. The drain of the fourth NMOS transistor is also used to control whether the third switching unit is turned on.

12. The system control circuit according to claim 11, characterized in that, The logic control unit further includes a first logic gate and a second logic gate. The first input terminal of the first logic gate is connected to a clock signal, its third input terminal is electrically connected to the control terminal of the third switching unit, and its output terminal is electrically connected to the second driving unit. The first input terminal of the second logic gate is electrically connected to the control terminal of the second switching unit, its second input terminal is connected to the clock signal, and its output terminal is electrically connected to the third driving unit.

13. The system control circuit according to claim 12, characterized in that, The indicator light control unit is electrically connected to the second input terminal of the first logic gate so that the indicator light is not lit when it is not needed; or... The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate.

14. The system control circuit according to any one of claims 1-6, characterized in that, The system control circuit is located on the same chip. The power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. The system control circuit also includes a first light-emitting pin, which is electrically connected to the output terminal of the first boost unit and is used to electrically connect to an indicator light.

15. An indicator component, characterized in that, include The system control circuit as described in any one of claims 1-14; An indicator light, which is electrically connected to the first boost unit of the system control circuit; The power supply, with its positive and negative terminals connected to the power supply terminal and power ground terminal of the system control circuit, respectively.

16. The indicating component according to claim 15, characterized in that, The power supply provides a voltage range of 1.5V-5V; or, The indicating component further includes a first capacitor, the first terminal of which and the indicator light are electrically connected to the same terminal of the first boost unit, and the second terminal of which is indirectly electrically connected to the power supply ground terminal; or... The indicator light is an LED light, which includes white LED lights and / or blue LED lights, and the minimum on-state voltage of the indicator light is greater than or equal to 2.5V; or, The power source includes battery cells.

17. An electronic atomizing device, characterized in that, include: The system control circuit as described in any one of claims 1-14 or the indicator component as described in any one of claims 15 and 16.

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