Sensor device, driving circuit of electronic atomization device, and electronic atomization device

Abstract

The present invention provides a sensor device, a driving circuit of an electronic atomization device, and an electronic atomization device, wherein the sensor device comprises: a main control unit, which is used to output a first control signal; a lifting unit, which is connected to the main control unit and is used to use the first control signal to lift the power supply voltage provided by the power supply device to generate a driving voltage; the driving voltage is a voltage for driving a light-emitting element to emit light, and the power supply voltage is lower than the conduction voltage of the light-emitting element. In this way, the light-emitting element can be guaranteed to emit light.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to a sensor device, a driving circuit of an electronic atomization device, and an electronic atomization device. Background Art

[0002] In the prior art, when the sensor device detects a change in airflow, it controls the power supply device to supply power. However, during the power supply process of the power supply device, there is a situation where the light-emitting element cannot emit light stably. Summary of the invention

[0003] The present invention provides a sensing device, a driving circuit of an electronic atomization device and an electronic atomization device, which can ensure that a light-emitting element emits light.

[0004] In order to solve the above technical problems, the first technical solution provided by the present invention is: to provide a sensing device, including: a main control unit, used to output a first control signal; a lifting unit, connected to the main control unit, used to use the first control signal to lift the power supply voltage provided by the power supply device to generate a driving voltage; the driving voltage is a voltage that drives the light-emitting element to emit light, and the power supply voltage is lower than the conduction voltage of the light-emitting element.

[0005] Wherein, the main control unit includes: a sensor, which is used to connect to the airway; and a main controller, which is connected to the sensor and is used to output the first control signal according to the airflow change detected by the sensor.

[0006] The sensing device further includes: a substrate having a first ventilation hole for connecting to an airway, and a sensor located on a first surface of the substrate and arranged corresponding to the first ventilation hole; a shell located on the first surface of the substrate and surrounding the sensor and the main controller, and having a second ventilation hole for connecting to a reference air pressure; the sensor detects whether there is an airflow change based on the air pressure of the airway and the reference air pressure.

[0007] The sensor and the main controller are packaged as an independent component, and the lifting unit is independently arranged from the packaged sensor and the main controller; or the main controller, the sensor and the lifting unit are packaged as an independent component.

[0008] Wherein, the sensing device is a MEMS sensor or a microphone.

[0009] In order to solve the above technical problems, the second technical solution provided by the present invention is: to provide a driving circuit of an electronic atomization device, comprising: a light-emitting element; a power supply device, providing a power supply voltage; a sensor device, connecting the power supply device and the light-emitting element, wherein the sensor device sends a first control signal, and the first control signal is used to raise the power supply voltage to generate a driving voltage, so as to drive the light-emitting element with the driving voltage; wherein the power supply voltage is lower than the turn-on voltage of the light-emitting element.

[0010] Among them, the power supply voltage provided by the power supply device is in the range of 1.6 to 3.6V, and the first control signal raises the power supply voltage to a range of 1V to 3.2V, so that the minimum value of the generated driving voltage matches the turn-on voltage of the light-emitting element, ensuring that the driving voltage can drive the light-emitting element to work.

[0011] Wherein, the sensing device further sends a second control signal to the circuit where the light-emitting element and the power supply device are located to adjust the voltage difference across the light-emitting element to drive the light-emitting element to emit light; wherein, when the second control signal is in a logic high state, the light-emitting element is non-luminous; when the second control signal is in a logic low state, the light-emitting element emits light.

[0012] Among them, the sensing device includes: a main control unit, used to detect whether there is an airflow change, and output the first control signal and the second control signal when there is an airflow change; a lifting unit, connected to the power supply device and the main control unit, so as to use the first control signal to lift the power supply voltage to generate the driving voltage, thereby driving the light-emitting element using the driving voltage.

[0013] The operating voltage of the main control unit matches the supply voltage range of the power supply device so as to work normally under the supply voltage provided by the power supply device.

[0014] Wherein, the lifting unit includes: a first unidirectional conductive member, a first end of the first unidirectional conductive member is connected to the power supply device to receive the power supply voltage; a first capacitor, a first end of the first capacitor is connected to the main control unit to receive the first control signal, and a second end of the first capacitor is connected to the second end of the first unidirectional conductive member, wherein a first node between the first capacitor and the first unidirectional conductive member serves as a first output end of the sensing device to output the driving voltage; wherein the main control unit further includes a switch output end to output the second control signal, and the light-emitting element is connected between the first output end and the switch output end.

[0015] Wherein, the frequency of the first control signal is greater than 50 Hz.

[0016] Wherein, the lifting unit includes: a first unidirectional conductive member, a first end of the first unidirectional conductive member is connected to the power supply device to receive the power supply voltage; a first capacitor, a first end of the first capacitor is connected to the main control unit to receive the first control signal, and a second end of the first capacitor is connected to the second end of the first unidirectional conductive member; a second unidirectional conductive member, a first end of the second unidirectional conductive member is connected to the second end of the first unidirectional conductive member; a second capacitor, a first end of the second capacitor is connected to the second end of the second unidirectional conductive member, and a second end of the second capacitor is grounded, wherein a first node between the second capacitor and the second unidirectional conductive member serves as a first output end of the sensing device to output the driving voltage; wherein the main control unit further includes a switch output end to output the second control signal, and the light-emitting element is connected between the first output end and the switch output end.

[0017] The lifting unit includes: an inductor, a first end of the inductor is connected to the power supply device to receive the power supply voltage; a first switch, a control end of the first switch is connected to the main control unit to receive the first control signal, a first path end of the first switch is connected to the other end of the inductor, and a second path end of the first switch is grounded; a first unidirectional conductive member, a first end of the first unidirectional conductive member is connected to the second end of the inductor; a first capacitor, a first end of the first capacitor is connected to the second end of the first unidirectional conductive member, wherein a first node between the first capacitor and the first unidirectional conductive member serves as a first output end of the sensor device to output the driving voltage; the main control unit further includes a switch output end to output the second control signal, a second end of the first capacitor is connected to the switch output end, and the light-emitting element is connected between the first output end and the switch output end.

[0018] Wherein, the lifting unit includes: a first resistor, a first end of the first resistor is connected to the first node; a second resistor, a first end of the second resistor is connected to the second end of the first resistor, and the second end of the second resistor is connected to the switch output end; wherein, the main control unit further includes a feedback end, the feedback end is connected to a fourth node between the first resistor and the second resistor to detect the driving voltage and adjust the duty cycle of the first control signal.

[0019] Wherein, the first control signal is a timing pulse signal.

[0020] In order to solve the above technical problems, the second technical solution provided by the present invention is: to provide an electronic atomization device, comprising a driving circuit of any of the above electronic atomization devices.

[0021] The beneficial effects of the present invention are different from those of the prior art. The present invention provides a lifting unit in the sensor device, and the lifting unit lifts the power supply voltage provided by the power supply device to generate a driving voltage that can drive the light-emitting element to emit light, thereby solving the problem of the light-emitting element not being able to emit light in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 A schematic diagram of functional modules of a sensor device according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic structural diagram of an embodiment of a sensor device shown;

[0025] Figure 3 It is a schematic diagram of the discharge test curve of a low voltage battery;

[0026] Figure 4 It is a structural schematic diagram of a first embodiment of a driving circuit of an electronic atomization device of the present invention;

[0027] Figure 5 It is a structural schematic diagram of a second embodiment of a driving circuit of an electronic atomization device of the present invention;

[0028] Figure 6 for Figure 5 The structural schematic diagram of the first embodiment of the driving circuit of the electronic atomization device shown;

[0029] Figure 7 for Figure 5 A structural schematic diagram of another embodiment of a driving circuit of an electronic atomization device shown;

[0030] Figure 8 for Figure 5 A structural schematic diagram of a second embodiment of a driving circuit for an electronic atomization device is shown;

[0031] Fig. 9 for Figure 5 A schematic structural diagram of a third embodiment of a driving circuit for an electronic atomization device is shown;

[0032] Fig.10 for Figure 5 A structural schematic diagram of a fourth embodiment of a driving circuit of an electronic atomization device shown;

[0033] Fig.11 It is a schematic structural diagram of an embodiment of the electronic atomization device of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In reality, electronic atomization devices are generally powered by general-purpose lithium batteries. The rated voltage of ordinary lithium batteries is 3.7V, and the output voltage is 2.5V~4.2V. However, the capacity of this battery is relatively low, and the number of puffs that can be taken by electronic atomization devices using ordinary lithium batteries is greatly restricted. After research, the inventor found that under the same volume, low-voltage batteries have higher energy density, and the capacity of ordinary lithium batteries is lower than that of low-voltage batteries. Therefore, this application uses low-voltage batteries for power supply. However, since the rated voltage of the low-voltage battery can be 2.8V, for example, and the output voltage corresponds to 1.6V~3.6V, it cannot stably drive the light-emitting element on the electronic atomization device. Therefore, in reality, low-voltage batteries are usually not used in the field of electronic atomization, but ordinary lithium batteries are used. However, in order to increase the number of puffs, this application uses a low-voltage battery for power supply, and to ensure that the light-emitting element can emit light stably, this application proposes a new type of sensor device, please refer to the details. Figure 1 .

[0036] Specifically, Figure 1 This is a module diagram of an embodiment of the sensor device of the present application. The sensor device includes a main control unit 1 and a lifting unit 2. Among them, the main control unit 1 is used to output a first control signal. Specifically, the main control unit 1 detects whether there is an airflow change, and outputs a first control signal when there is an airflow change. In one embodiment, the sensor device can be applied to the field of electronic atomization devices. The main control unit 1 is connected to the airway of the electronic atomization device. For example, when the user inhales, the sensor device detects the airflow change in the airway and outputs a first control signal. The lifting unit 2 uses the first control signal to lift the power supply voltage provided by the power supply device and then generate a driving voltage, which can drive the light-emitting element to emit light.

[0037] When the sensor device described in this embodiment is used in an electronic atomization device, it can support the electronic atomization device to choose to use a low-voltage battery, such as a low-voltage battery with a rated voltage of 2.8V and an output voltage of 1.6V to 3.6V for power supply, thereby increasing the number of puffs of the electronic atomization device; and because the sensor device of this embodiment is applied, it can ensure that the light-emitting element emits light.

[0038] See also Figure 2 , Figure 2 for Figure 1 A schematic diagram of a specific structure of the sensor device shown. The main control unit 1 includes a sensor 31 and a main controller 32. The sensor 31 is connected to the airway, and the main controller 32 is connected to the sensor 31, and is used to output a first control signal according to the airflow change detected by the sensor 31. The lifting unit 2 raises the power supply voltage provided by the power supply device based on the first control signal to generate a driving voltage, and the driving voltage can drive the light-emitting element to emit light. Specifically, the power supply voltage is lower than the conduction voltage of the light-emitting element.

[0039] In this embodiment, the lifting unit 2 can be integrated into the main controller 32 .

[0040] The sensing device further includes: a substrate 35 and a shell 36, wherein the substrate 35 has a first vent 33 for connecting to an airway. The sensor 31 is located on the first surface of the substrate 35 and is arranged corresponding to the first vent 33. Specifically, one end of the sensor 31 is located on one side of the first vent 33, and the other end of the sensor 31 is located on the other side of the first vent 33. The shell 36 is located on the first surface of the substrate 35 and is arranged around the sensor 31 and the main controller 32. The shell 36 has a second vent 34 for connecting to a reference air pressure P0. The sensor 31 is electrically connected to the main controller 32 through a metal wire, and the main controller 32 is electrically connected to the substrate 35 through a metal wire. In one embodiment, the substrate 35 is a circuit board.

[0041] The sensor 31 detects whether there is an airflow change based on the air pressure P of the airway and the reference air pressure P0. When there is a suction action, the air pressure of the airway is P, and the sensor 31 detects the airflow change as △P=P-P0 through the first vent 33. The airflow difference △P can change the capacitance spacing of the sensor 31 so that the capacitance changes. The main controller 32 outputs a first control signal according to the change in capacitance value. The lifting unit 2 raises the power supply voltage provided by the power supply device based on the first control signal to generate a driving voltage, which can drive the light-emitting element to emit light.

[0042] In one embodiment, the sensor 31 and the main controller 32 are packaged as an independent component, and the lifting unit 2 is set independently of the packaged sensor 31 and the main controller 32. In one embodiment, the lifting unit 2 and the packaged sensor 31 and the main controller 32 are respectively set on the circuit board. Or in another embodiment, the main controller 32, the sensor 31 and the lifting unit 2 are packaged as an independent component.

[0043] In one embodiment, the sensing device is a MEMS sensor.

[0044] When the sensor device described in this embodiment is used in an electronic atomization device, it can support the electronic atomization device to choose to use a low-voltage battery, such as a power supply device with a rated voltage of 2.8V and an output voltage of 1.6V to 3.6V for power supply, thereby increasing the number of puffs of the electronic atomization device; and because the sensor device of this embodiment is applied, it can ensure that the light-emitting element emits light.

[0045] In reality, electronic atomization devices are generally powered by general-purpose lithium batteries. The rated voltage of ordinary lithium batteries is 3.7V, and the output voltage is 2.5V to 4.2V. However, the capacity of this battery is low, and the number of puffs that can be taken by electronic atomization devices using ordinary lithium batteries is greatly restricted. After research, the inventor found that under the same volume, the energy density of low-voltage batteries is higher, and the capacity of ordinary lithium batteries is lower than that of low-voltage batteries. Therefore, this application uses low-voltage batteries for power supply. However, since the rated voltage of the low-voltage battery is 2.8V and the output voltage is 1.6V to 3.6V, when the power supply voltage of the low-voltage battery is lower than 2.6V, there will be a problem that the white, blue, and green light-emitting elements cannot be directly lit. The main reason is that the luminous color of the light-emitting element is determined by the bandgap width characteristics of the PN junction material, and the forward conduction voltage is doped with different elements into the PN junction, so that the turn-on voltage of the PN junction changes. Generally, the on-state voltage of low-power light-emitting components such as red, yellow, orange, and yellow-green is 1.8-2.4V, and the on-state voltage of green, blue, and white is 2.6-3.6V. Figure 3 , Figure 3 The discharge curve of a low-voltage battery is shown in Figure 2. During the discharge process, the power supply voltage of the low-voltage battery will be lower than 2.6V. At this time, the power supply voltage cannot drive the green, blue, and white light-emitting elements to emit light. Therefore, the low-voltage battery cannot stably drive the light-emitting elements on the electronic atomization device. Therefore, in reality, low-voltage batteries are usually not used in the field of electronic atomization, but ordinary lithium batteries are used. However, in order to increase the number of puffs, this application uses a low-voltage battery for power supply and designs a drive circuit, which can enable the light-emitting elements on the electronic atomization device to be lit when the low-voltage battery is used for power supply.

[0046] For details, please see Figure 4 , is a schematic diagram of the structure of the first embodiment of the driving circuit of the electronic atomization device of the present invention. Specifically, the driving circuit includes a light emitting element 11, a power supply device 12 and a sensor device 13. In one embodiment, the sensor device is a MEMS sensor or a microphone.

[0047] The power supply device 12 provides a power supply voltage V1, and the sensor device 13 connects the power supply device 12 and the light-emitting element 11. The sensor device 13 sends a first control signal, and the first control signal is used to raise the power supply voltage V1 to generate a driving voltage V2, so as to drive the light-emitting element 11 to emit light using the driving voltage V2. In a specific embodiment, the first control signal is a PWM signal. In an embodiment, the first control signal is a timing pulse signal.

[0048] Among them, the power supply voltage V1 is lower than the conduction voltage of the light emitting element 11. Specifically, the rated power supply voltage of the power supply device 12 is 2.8V, and the power supply voltage V1 ranges from 1.6V to 3.6V. The use of the power supply device 12 for power supply can increase the number of puffs of the electronic atomization device. However, the applicant has found through research that the power supply device 12 cannot stably make the light emitting element 11 emit light. Therefore, the sensor device 13 provided by the present invention is applied to this embodiment, and the sensor device 13 sends a first control signal when an airflow change is detected. The first control signal is a timing pulse signal. The sensor device 13 uses the first control signal to raise the supply voltage V1 to generate a driving voltage V2, and then uses the driving voltage V2 to drive the light emitting element 11 to emit light.

[0049] Specifically, the first control signal raises the supply voltage V1 to a range of 1V to 3.2V, so that the minimum value of the generated driving voltage V2 matches the minimum value of the working voltage of the light-emitting element 11, ensuring that the driving voltage V2 can drive the light-emitting element 11 to work, and preventing the driving voltage V2 from being too large and burning the light-emitting element 11. The power supply device 12 provides the supply voltage V1, and the rated supply voltage of the power supply device 12 is 2.8V, and the supply voltage V1 ranges from 1.6V to 3.6V. The light-emitting element 11 usually works between 2.6V and 3.6V. The supply voltage V1 provided by the power supply device 12 cannot stably drive the light-emitting element 11 to work normally, but the difference between the two is not large, and the electronic atomization device does not need to light up the light-emitting element for a long time, it only needs to light up the light-emitting element briefly when inhaling. Therefore, the electronic atomization device does not need to set up a complex circuit to boost the power supply voltage V1 and maintain the boosted high voltage for a long time. The electronic atomization device of the present application uses the first control signal of the PWM signal to achieve a small-scale and short-term boost of the power supply voltage V1. It only needs to raise the power supply voltage V1 by 1V to 3.2V in a short time to ensure that the light-emitting element 11 can be stably driven to work within a short puffing time and prevent the driving voltage V2 from being too high and burning the light-emitting element 11. In order to ensure that the light-emitting element 11 can emit light, the first control signal raises the power supply voltage V1 to the driving voltage V2, and the minimum value of the driving voltage V2 is the minimum value of the working voltage of the light-emitting element 11.

[0050] In one embodiment, the sensing device 13 further sends a second control signal to the circuit where the light-emitting element 11 and the power supply device 12 are located to adjust the voltage difference across the light-emitting element 11 to drive the light-emitting element 11 to emit light; wherein, when the second control signal is in a logic high state, the light-emitting element 11 is non-luminous; when the second control signal is in a logic low state, the light-emitting element 11 emits light.

[0051] In this embodiment, the driving circuit of the electronic atomization device is powered by a power supply device 12 with a rated supply voltage of 2.8V and a supply voltage range of 1.6V to 3.6V. Since the battery capacity of the power supply device 12 of the present application is higher than that of a common battery with a rated voltage of 3.7V and an output voltage of 2.5V to 4.2V under the same volume, the power supply device 12 of the present application can increase the number of puffs. Furthermore, since the power supply device 12 with a rated supply voltage of 2.8V and a supply voltage range of 1.6V to 3.6V cannot light up the light-emitting element 11, the present application sets a sensor device 13, which outputs a first control signal to raise the supply voltage V1 provided by the power supply device 12 to the driving voltage V2, thereby causing the light-emitting element 11 to emit light.

[0052] See also Figure 5 , is a schematic diagram of the structure of the second embodiment of the driving circuit of the electronic atomization device of the present invention. Figure 1 Compared with the first embodiment shown, the difference is that in this embodiment, the sensor device 13 includes a main control unit 131 and a lifting unit 132.

[0053] The main control unit 131 outputs a first control signal and a second control signal. The lifting unit 132 is connected to the power supply device 12 and the main control unit 131 to use the first control signal to lift the power supply voltage V1 to generate a driving voltage V2, thereby using the driving voltage V2 to drive the light-emitting element 11. Specifically, the first control signal lifts the power supply voltage V1 in the range of 1V to 3.2V, so that the minimum value of the generated driving voltage V2 matches the minimum value of the working voltage of the light-emitting element 11, ensuring that the driving voltage V2 can drive the light-emitting element 11 to work. The rated supply voltage of the power supply device 12 is 2.8V, and its supply voltage V1 ranges from 1.6V to 3.6V, while the light-emitting element 11 usually operates between 2.6V and 3.6V. The supply voltage V1 provided by the power supply device 12 cannot stably drive the light-emitting element 11 to work normally, but the difference between the two is not large, and the electronic atomization device does not need to light up the light-emitting element for a long time. It only needs to light up the light-emitting element 11 briefly during inhalation. Therefore, the electronic atomization device does not need to set up a complex circuit to boost the supply voltage V1 and maintain the boosted high voltage for a long time. The electronic atomization device of the present application uses the first control signal of the PWM signal to achieve a small-scale and short-term increase in the supply voltage V1. It only needs to raise the supply voltage V1 by 1V to 3.2V in a short time to ensure that the light-emitting element 11 can be stably driven to work within a shorter inhalation time. In order to ensure that the light-emitting element 11 can emit light, the first control signal raises the supply voltage V1 to the driving voltage V2 , and the minimum value of the driving voltage V2 is the minimum value of the operating voltage of the light-emitting element 11 .

[0054] Specifically, in this embodiment, the operating voltage of the main control unit 131 matches the range of the power supply voltage V1 of the power supply device 12 so as to work normally under the power supply voltage V1 provided by the power supply device 12 .

[0055] In this embodiment, the driving circuit of the electronic atomization device is powered by a power supply device 12 with a rated supply voltage of 2.8V and a supply voltage range of 1.6V to 3.6V. Since the battery capacity of the power supply device 12 of the present application is higher than that of a common battery with a rated voltage of 3.7V and an output voltage of 2.5V to 4.2V under the same volume, the power supply device 12 of the present application can increase the number of puffs. Furthermore, since the power supply device 12 with a rated supply voltage of 2.8V and a supply voltage range of 1.6V to 3.6V cannot light up the light-emitting element 11, the present application sets a lifting unit 132 and a main control unit 131. The lifting unit 132 raises the supply voltage V1 provided by the power supply device 12 to the driving voltage V2 according to the first control signal output by the main control unit 131, thereby making the light-emitting element 11 emit light.

[0056] See also Figure 6 ,for Figure 5A schematic diagram of the structure of an embodiment of a driving circuit of an electronic atomization device shown. In this embodiment, the lifting unit 132 includes a first unidirectional conductive member D1 and a first capacitor C1. The first end of the first unidirectional conductive member D1 is connected to the power supply device 12 to receive the power supply voltage V1. The first end of the first capacitor C1 is connected to the first port A of the main control unit 131 to receive the first control signal P1, and the second end of the first capacitor C1 is connected to the second end of the first unidirectional conductive member D1. The first node n1 between the first capacitor C1 and the first unidirectional conductive member D1 serves as the first output terminal n1 of the sensor device 13 to output the driving voltage V2. The main control unit 131 further includes a switch output terminal B to output a second control signal P3, and the light-emitting element 11 is connected between the first output terminal n1 and the switch output terminal P2. Specifically, as Figure 4 As shown, the lifting unit 132 further includes a third resistor R3 , a first end of the third resistor R3 is connected to the switch output end P2 , and a second end of the first resistor is connected to the light emitting element 11 .

[0057] Specifically, in this embodiment, the main control unit 131 can be an ASIC, an MCU, an MCU with a Bluetooth function, etc. The first port A of the main control unit 131 outputs a first control signal P1 to raise the power supply voltage V1 provided by the power supply device 12 to the driving voltage V2. Among them, the first unidirectional conductor D1 is used to prevent voltage backflow, the first capacitor C1 is used to store electrical energy, and the third resistor R3 is used to limit the current of the light-emitting element 11. Specifically, the first control signal P1 is a PWM signal. When the first control signal P1 is at a low level, under the premise of ignoring the voltage drop of the light-emitting element 11, the voltage Vn1=V1 at the first node n1, V1 is the power supply voltage, and its range is 1.6V~3.6V. When the first control signal P1 is at a high level, the voltage Vn2 at the second node n2 is superimposed on the voltage across the first capacitor C1. At this time, the voltage of the first node n1 is Vn1=V1+Vn2, wherein the voltage Vn2 at the second node n2 is the voltage when the first control signal P1 is at a high level, and the voltage Vn1=V1+Vn2 at the first node n1 is the driving voltage V2, and the driving voltage V2 is used to power the light-emitting element 11.

[0058] In one embodiment, the frequency of the first control signal P1 is greater than 50HZ, which can prevent the human eye from distinguishing the flashing light. It can be understood that the signal at the second node n2 at the left end of the first capacitor C1 is a PWM signal, and the signal at the first node n1 at the right end of the first capacitor C1 is also a PWM signal. When the first control signal P1 is at a low level, the light-emitting element 11 cannot emit light. Only when the first control signal P1 is at a high level, the light-emitting element 11 can emit light. In order to make the light-emitting element 11 always in the light-emitting state as seen by the human eye, the frequency of the first control signal P1 is set to be greater than 50HZ.

[0059] Furthermore, in this embodiment, the main control unit 131 further outputs a second control signal P3 to the light-emitting element 11 and the circuit where the power supply device 12 is located through the switch output terminal B to adjust the voltage difference across the light-emitting element 11 to drive the light-emitting element 11 to emit light. Specifically, when the second control signal P3 is in a logic high state, the light-emitting element 11 is non-luminous, and when the second control signal P3 is in a logic low state, the light-emitting element 11 emits light. The voltage range of the second control signal in the logic high state is 0.3V to 0.7V, and the voltage range of the second control signal in the logic low state is -0.2V to 0V.

[0060] like Figure 6 As shown, in this embodiment, the lifting unit 132 and the main control unit 131 are independent units. In another embodiment, the lifting unit 132 can also be integrated with the main control unit 131, that is, the main control unit 131 and the lifting unit 132 are packaged as an independent device unit. Figure 7 shown.

[0061] The driving circuit of this embodiment uses the first control signal P1 with a frequency greater than 50HZ to quickly charge and discharge the first capacitor C1, so that the power supply device 12 with a rated power supply voltage of 2.8V and a power supply voltage range of 1.6V to 3.6V drives the light-emitting element 11 to emit light.

[0062] See also Figure 8 ,for Figure 5 A schematic diagram of the structure of the second embodiment of the driving circuit of the electronic atomization device shown. In this embodiment, the lifting unit 132 includes: a first unidirectional conductive member D1, a first capacitor C1, a second unidirectional conductive member D2 and a second capacitor C2. Among them, the first end of the first unidirectional conductive member D1 is connected to the power supply device 12 to receive the power supply voltage V1. The first end of the first capacitor C1 is connected to the first port A of the main control unit 131 to receive the first control signal P1, and the second end of the first capacitor C1 is connected to the second end of the first unidirectional conductive member D1. The first end of the second unidirectional conductive member D2 is connected to the second end of the first unidirectional conductive member D1, and the connection point between the first end of the second unidirectional conductive member D2 and the second end of the first unidirectional conductive member D1 is the third node n3. The first end of the second capacitor C2 is connected to the second end of the second unidirectional conductive member D2, and the second end of the second capacitor C2 is grounded. The first node n1 between the second capacitor C2 and the second unidirectional conductive member D2 serves as the first output end of the control circuit to output the driving voltage V2. In this embodiment, the main control unit 131 further includes a switch output terminal B to output the second control signal P3, and the light emitting element 11 is connected between the first output terminal (i.e., the first node n1) and the switch output terminal B. In this embodiment, the lifting unit 132 also includes a third resistor R3, a first end of the third resistor R3 is connected to the switch output terminal B, and a second end of the third resistor R3 is connected to the light emitting element 11.

[0063] In this embodiment, the first unidirectional conductive member D1 and the second unidirectional conductive member D2 are used to prevent voltage backflow, and the first capacitor C1 and the second capacitor C2 are used to store electric energy. When the first control signal P1 is at a low level, the voltage Vn3 at the third node n3 is V1, V1 is the power supply voltage, and the voltage Vn3 at the third node n3 charges the second capacitor C2 through the second unidirectional conductive member D2. When the first control signal P1 is a high level signal, the voltage Vn2 at the second node n2 is superimposed on the voltage across the first capacitor C1, and the second capacitor C2 is charged through the second unidirectional conductive member D2, and the driving voltage V2 is provided to the light emitting element 11. At this time, the voltage across the second capacitor C2 is also the driving voltage V2=VCC+Vn2, where Vn2 is the voltage when the first control signal P1 is a high level signal. In this embodiment, due to the existence of the second capacitor C2, the waveform of the voltage at the first node n1, that is, the driving voltage V2, is relatively stable, and is basically a straight line, so the frequency of the first control signal P1 is not required to be greater than 50HZ.

[0064] See also Fig. 9 ,for Figure 5 The schematic diagram of the structure of the third embodiment of the driving circuit of the electronic atomization device shown. In this embodiment, the lifting unit 132 includes: an inductor L, a first switch Q1, a first unidirectional conductive member D1 and a first capacitor C1. Among them, the first end of the inductor L is connected to the power supply device 12 to receive the power supply voltage V1. The control end of the first switch Q1 is connected to the first port A of the main control unit 131 to receive the first control signal P1, the first path end of the first switch Q1 is connected to the second end of the inductor L, and the second path end of the first switch Q1 is grounded. The first end of the first unidirectional conductive member D1 is connected to the second end of the inductor L. The first end of the first capacitor C1 is connected to the second end of the first unidirectional conductive member D1, wherein the first node n1 between the first capacitor C1 and the first unidirectional conductive member D1 is used as the first output end of the control circuit to output the driving voltage V2. In this embodiment, the main control unit 131 further includes a switch output terminal B to output the second control signal P3, the second end of the first capacitor C1 is connected to the switch output terminal B, and the light-emitting element 11 is connected between the first output terminal (i.e., the first node n1) and the switch output terminal B. Specifically, the lifting unit 132 in this embodiment further includes a third resistor R3 , a first end of the third resistor R3 is connected to the switch output end B, and a second end of the third resistor R3 is connected to the light emitting element 11 .

[0065] Specifically, in this embodiment, the first switch Q1 is turned on according to the first control signal P1. When the first switch Q1 is turned on, the supply voltage V1 is charged through the inductor L, the first switch Q1 and the first capacitor C1. As the charging process continues, the current on the inductor L increases linearly. After a certain period of time, the inductor stores enough energy. During this process, the first unidirectional conductive member D1 is reverse biased and cut off, and the first capacitor C1 provides the driving voltage V2 to the light-emitting element 11 to control the light-emitting element 11 to emit light. When the first switch Q1 is not turned on, the first switch Q1 is disconnected. Since the inductor L has a reverse electromotive force, the current of the inductor L cannot change suddenly, but will be discharged gradually. Since the first switch Q1 is disconnected, the inductor L will discharge through the first unidirectional conductive member D1, the light-emitting element 11 and the loop where the first capacitor C1 is located. That is, the inductor L charges the first capacitor C1. Since the first capacitor C1 has provided a voltage before the inductor L is charged, the voltage across the first capacitor C1 increases, thereby providing the driving voltage V2 to the light-emitting element 11 to drive the light-emitting element 11 to emit light.

[0066] See also Fig.10 ,for Figure 5 The structure diagram of the fourth embodiment of the driving circuit of the electronic atomization device shown in FIG. Figure 7 Compared with the third embodiment shown in the figure, the difference is that the main control unit 131 of this embodiment further includes a feedback terminal C. The lifting unit 132 also includes a first resistor R1 and a second resistor R2. Among them, the first end of the first resistor R1 is connected to the first node n1, the first end of the second resistor R2 is connected to the second end of the first resistor R1, and the second end of the second resistor R2 is connected to the switch output terminal B. Specifically, the lifting unit 132 also includes a third resistor R3, the first end of the third resistor R3 is connected to the switch output terminal B to receive the second control signal P3, and the second end of the third resistor R3 is connected to the second end of the second resistor R2 and the light-emitting element 11.

[0067] In this embodiment, the feedback terminal C of the main control unit 131 detects the voltage at the fourth node n4, and then adjusts the duty cycle of the first control signal P1 according to the voltage at the fourth node n4, thereby adjusting the voltage value of the driving voltage V2.

[0068] That is to say, Fig. 9 In the embodiment shown, the voltage value of the driving voltage V2 is fixed, and Fig.10 In the illustrated embodiment, the voltage value of the driving voltage V2 is adjustable.

[0069] The above-mentioned embodiment of the present application adopts a low-voltage battery for power supply, and designs a driving circuit, which can make it possible to light up the light-emitting element on the electronic atomization device when using a low-voltage battery for power supply.

[0070] See also Fig.11 , is a schematic diagram of the structure of an embodiment of the electronic atomization device of the present invention. Specifically, the electronic atomization device 90 of the present invention includes the driving circuit 80 of the electronic atomization device of any of the above embodiments. In one embodiment, the driving circuit 80 of the above electronic atomization device can be arranged at the battery rod end of the electronic atomization device 90. Alternatively, in another embodiment, the driving circuit 80 of the above electronic atomization device can also be arranged at the atomizer end of the electronic atomization device 90, which is not specifically limited.

[0071] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sensing device, characterized in that: include: A main control unit, configured to output a first control signal; the main control unit comprises a sensor and a main controller, the sensor being configured to be connected to an airway; the main controller being connected to the sensor and configured to output the first control signal according to airflow changes detected by the sensor; a lifting unit connected to the main control unit, and configured to use the first control signal to lift the power supply voltage provided by the power supply device to generate a driving voltage, so as to drive the light-emitting element to emit light during the puffing time; The driving voltage is a voltage for driving the light-emitting element to emit light, and the supply voltage is lower than the conduction voltage of the light-emitting element; Wherein, the lifting unit comprises: a first unidirectional conductive member, wherein a first end of the first unidirectional conductive member is connected to the power supply device to receive the power supply voltage, and a second end of the first unidirectional conductive member is connected to the light emitting element; a first capacitor, wherein a first end of the first capacitor is connected to the main control unit to receive the first control signal, and a second end of the first capacitor is connected to a second end of the first unidirectional conductive member; Wherein, the first control signal is a timing pulse signal.

2. The sensor device according to claim 1, characterized in that The sensing device further comprises: A substrate, wherein the substrate has a first vent hole for connecting to an airway, and the sensor is located on a first surface of the substrate and is arranged corresponding to the first vent hole; A shell, located on the first surface of the substrate and surrounding the sensor and the main controller, wherein the shell has a second vent hole for connecting a reference air pressure; The sensor detects whether there is an airflow change based on the air pressure of the airway and the reference air pressure.

3. The sensor device according to claim 1, characterized in that: The sensor and the main controller are packaged as an independent component, and the lifting unit is independently provided from the packaged sensor and the main controller; or, The main controller, the sensor and the lifting unit are packaged as an independent component.

4. The sensor device according to claim 1, characterized in that The sensing device is a MEMS sensor or a microphone.

5. The sensor device according to claim 1, characterized in that: The lifting unit also includes: a second one-way conductive member, wherein a first end of the second one-way conductive member is connected to a second end of the first one-way conductive member, and a second end of the second one-way conductive member is connected to the light emitting element; A second capacitor, wherein a first end of the second capacitor is connected to a second end of the second unidirectional conductor, and a second end of the second capacitor is grounded.

6. A driving circuit for an electronic atomization device, characterized in that: include: Light emitting element; A power supply device, providing a power supply voltage; A sensor device connected to the power supply device and the light emitting element, wherein the sensor device sends a first control signal, and the first control signal is used to raise the power supply voltage to generate a driving voltage, so as to drive the light emitting element with the driving voltage; Wherein, the supply voltage is lower than the turn-on voltage of the light-emitting element; Wherein, the sensing device comprises: A main control unit, configured to output a first control signal; the main control unit includes a sensor and a main controller, the sensor is configured to be connected to an airway; the main controller is connected to the sensor, configured to output the first control signal according to airflow changes detected by the sensor: a lifting unit connected to the main control unit, and used to use the first control signal to lift the power supply voltage provided by the power supply device to generate a driving voltage, so as to drive the light-emitting element to emit light during the puffing time; the driving voltage is a voltage for driving the light-emitting element to emit light, and the power supply voltage is lower than the conduction voltage of the light-emitting element; Wherein, the lifting unit comprises: a first unidirectional conductive member, wherein a first end of the first unidirectional conductive member is connected to the power supply device to receive the power supply voltage, and a second end of the first unidirectional conductive member is connected to the light emitting element; a first capacitor, wherein a first end of the first capacitor is connected to the main control unit to receive the first control signal, and a second end of the first capacitor is connected to a second end of the first unidirectional conductive member; Wherein, the first control signal is a timing pulse signal.

7. The driving circuit according to claim 6, characterized in that: The power supply voltage provided by the power supply device is in the range of 1.6 to 3.6V, and the first control signal raises the power supply voltage to a range of 1V to 3.2V, so that the minimum value of the generated driving voltage matches the turn-on voltage of the light-emitting element, ensuring that the driving voltage can drive the light-emitting element to work.

8. The driving circuit according to claim 6 or 7, characterized in that: The sensing device further sends a second control signal to the circuit where the light-emitting element and the power supply device are located to adjust the voltage difference across the light-emitting element to drive the light-emitting element to emit light; wherein, when the second control signal is in a logic high state, the light-emitting element is non-luminous; and when the second control signal is in a logic low state, the light-emitting element emits light.

9. The driving circuit according to claim 8, characterized in that: The main control unit is used to detect whether there is an airflow change, and output the first control signal and the second control signal when there is an airflow change.

10. The driving circuit according to claim 9, characterized in that: The operating voltage of the main control unit matches the supply voltage range of the power supply device so as to operate normally under the supply voltage provided by the power supply device.

11. The driving circuit according to claim 9, characterized in that: A first node between the first capacitor and the first unidirectional conductive member serves as a first output terminal of the sensor device to output the driving voltage; Wherein, the main control unit further includes a switch output end to output the second control signal, and the light emitting element is connected between the first output end and the switch output end.

12. The driving circuit according to claim 11, characterized in that: The frequency of the first control signal is greater than 50 Hz.

13. The driving circuit according to claim 9, characterized in that: The lifting unit comprises: a second one-way conductive member, wherein a first end of the second one-way conductive member is connected to a second end of the first one-way conductive member; a second capacitor, wherein a first end of the second capacitor is connected to a second end of the second unidirectional conductive member, and a second end of the second capacitor is grounded, wherein a first node between the second capacitor and the second unidirectional conductive member serves as a first output end of the sensor device to output the driving voltage; Wherein, the main control unit further includes a switch output end to output the second control signal, and the light emitting element is connected between the first output end and the switch output end.

14. An electronic atomization device, characterized in that: A driving circuit comprising the electronic atomization device as described in any one of claims 6 to 13.

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