Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a block diagram of an electronic cigarette according to a first embodiment of the present invention. As shown in fig. 1, the electronic cigarette of the present embodiment includes: the device comprises a main controller 1, an atomizer heating wire 2, an oil guide piece 3 in contact with the atomizer heating wire 2, a light emitting module 4, a first light detection module 51, a second light detection module 52, a power regulation module 6, an oil amount prompt module 7, a smoking trigger module 8 and a power supply module 9. Wherein the light emitting module 4, the first light detecting module 51 and the second light detecting module 52 constitute a light detecting assembly in the present embodiment. In this embodiment, the oil guide member 3 is a glass fiber rope having a cylindrical structure, and the atomizer heating wire 2 is wound around the oil guide member 3; the oil guide member 3 may also be configured as a cylindrical structure, the atomizer heating wire 2 is in a cylindrical spiral shape and is sleeved in the oil guide member 3, the oil guide member 3 may also be configured as a plate-shaped structure, and the atomizer heating wire 2 is in a disc-shaped spiral structure and is attached to one side of the oil guide member; therefore, the specific structure of the atomizer heating wire 2 and the oil guide 3 is not limited herein. The working principle of the electronic cigarette provided by the embodiment is as follows:
the power module 9 is used for supplying power to each functional module in the circuit, and is electrically connected to the light emitting module 4, the first light detecting module 51, the second light detecting module 52, the oil amount prompting module 7, the smoking triggering module 8, the main controller 1 and the power regulating module 6 respectively. In order to emphasize the core signal flow in the present application, fig. 1 omits the electrical connection of the power supply module 9 and a part of the functional modules.
Smoking trigger module 8 is used for sending the smoking signal to master controller 1. In a preferred embodiment of the present invention, the smoking triggering module 8 may be a key switch. When the user is ready to smoke or stops smoking, only the key switch needs to be triggered. User's button signal can be sent to master controller 1, and master controller 1 further controls the break-make of electron cigarette. In another preferred embodiment provided by the present invention, the smoking triggering module 8 may also be an airflow sensor. When a user smokes, the airflow sensor senses negative pressure generated by smoking of the user in the electronic cigarette, and when the negative pressure exceeds a preset threshold value, the airflow sensor sends a smoking signal to the main controller 1 to start the electronic cigarette.
The main controller 1 controls the light-emitting module 4 to emit light after receiving the smoking signal sent by the smoking triggering module 8. After the incident light 20 emitted from the light emitting module 4 irradiates the oil guiding member 3, a part of the light is reflected by the oil guiding member 3, and a part of the light is transmitted from the oil guiding member 3. The reflected light 40 is received by the first photo-detecting module 51 and converted into a first electrical signal to be transmitted to the main controller 1, and the transmitted light 60 is received by the second photo-detecting module 52 and converted into a second electrical signal to be transmitted to the main controller 1. The intensity of the first electrical signal and the second electrical signal is related to the received light intensity of the reflected light ray 40 and the transmitted light ray 60, respectively. The light intensity of the reflected light 40 and the transmitted light 60 is related to the amount of soot absorbed by the oil guide 3. Thus, both the first electrical signal and the second electrical signal are related to the amount of soot absorbed by the oil guide 3, and this relationship has been stored in the master 1 in advance. After the main controller 1 receives the electric signals sent by the first optical detection module 51 and the second optical detection module 52, the amount information of the smoke oil absorbed in the oil guide member 3 can be obtained according to the corresponding relationship between the pre-stored electric signals and the amount of the smoke oil, and the amount information of the smoke oil is sent to the oil amount prompt module 7 to be displayed. Meanwhile, the main controller 1 sends a control signal to the power adjusting module 6 according to the amount of the smoke to adjust the atomizing power of the heating wire 2 of the atomizer.
The atomizer heating wire 2 is typically a resistive device that generates high temperature by electrical heating, thereby atomizing the tobacco tar. The oil guiding piece 3 is contacted with the electric heating wire 2 of the atomizer, and guides the tobacco tar to the electric heating wire 2 of the atomizer for the electric heating wire 2 of the atomizer to atomize. The atomizer heating wire 2 is connected to the power adjusting module 6, and the atomizing power of the atomizer heating wire 2 is adjusted by the power adjusting module 6. It is understood that the power adjustment of the atomizer heating wire 2 by the power adjustment module 6 comprises disconnecting the power supply to the atomizer heating wire 2.
The fuel quantity prompt module 7 may include a display screen and/or an indicator light. Wherein, the display screen is used for displaying the numbers and/or characters related to the oil quantity. The indicator light can indicate the quantity of the oil through the brightness degree, and can also indicate the shortage of the oil through a flashing mode. It should be understood that in the utility model discloses in, oil mass suggestion module 7 is an optional functional module, can select whether to be contained in according to actual need in the utility model provides an electron cigarette.
The embodiment provides an utilize light signal detection to lead the cigarette oil mass that oil piece 3 absorbed and adjust the electron cigarette's of atomization power's electron cigarette according to the cigarette oil mass electron cigarette, can show promotion electron cigarette taste and atomization efficiency, and detection cost is low moreover, the method is simple and easily realize.
Figure 2 is a circuit diagram of a second embodiment of the electronic cigarette provided by the present invention. As shown in fig. 2, the electronic cigarette circuit diagram of the present embodiment can be divided into two parts, one part is the circuit diagram of the battery assembly 100, and the other part is the circuit diagram of the atomizer 200. The battery assembly 100 and the atomizer 200 are electrically connected to each other through respective interfaces to form an electronic cigarette circuit diagram.
In the battery pack 100, the battery BT and the voltage conversion unit 91 (shown by a broken line frame in the drawing) constitute a power supply module of the present application for supplying a voltage to each circuit module. The voltage conversion unit 91 is configured to convert the voltage of the battery BT into an appropriate voltage. The voltage converted by the voltage conversion unit 91 is input to the light emitting module, the first photo detection module 51, and the second photo detection module 52. As shown in fig. 2, the voltage conversion unit 91 includes a voltage conversion chip U3. In this embodiment, the model of the voltage conversion chip U3 is TLV70430, and the voltage conversion chip U3 has 3 pins used, where the 1 st pin is a voltage input terminal Vin, the 3 rd pin is a voltage output terminal Vout, and the 2 nd pin is a ground terminal GND. The 1 st pin of the voltage conversion chip U3 is connected to the positive electrode of the battery BT, the 3 rd pin of the voltage conversion chip U3 is connected to the anode of the light emitting diode LED5, the resistor R4 and the resistor R5, respectively, and the 2 nd pin of the voltage conversion chip U3 is grounded. In addition, a capacitor C2 is connected between the 1 st pin and the 2 nd pin of the voltage conversion chip U3, and a resistor R3 and a capacitor C3 are connected between the 3 rd pin and the second pin of the voltage conversion chip U3. The key switch SW2 is a smoking triggering module, and the user sends a smoking signal to the master U4 by triggering the key switch SW 2. The switching tube Q2 is a power regulating module. The light emitting diode LED3 and the LED4 constitute a fuel amount indication module.
In the atomizer 200, the LED5 is a light emitting module, and emits the incident light 20 to the oil guide Y3. The resistor R4 and the photo-resistor R17 constitute a first photo-detecting module 51 for receiving the reflected light 40 of the oil guide Y3. The resistor R5 and the photo-resistor R18 constitute a second photo-detecting module 52 for receiving the transmitted light 60 of the oil guide Y3. The oil guide Y3 is in contact with the resistor R19 and guides the smoke oil to the resistor R19. The resistor R19 is an atomizer heating wire which atomizes the tobacco tar guided from the oil guide Y3 by means of electro-heating.
The working principle of the whole circuit is as follows:
one end of the key switch SW2 is connected to the 3 rd pin of the master U4, and the other end is grounded. When the key switch SW2 is pressed, the pin 3 of the master U4 inputs a low level, and the pin 5 of the master U4 outputs a low level. Since the anode of the LED5 is connected to the output terminal of the voltage converting unit 91 and the cathode thereof is connected to the 5 th pin of the main controller U4 through the resistor R12, when the 5 th pin of the main controller U4 outputs a low level, the LED5 is turned on, so as to emit light to irradiate the oil guiding member Y3. A portion of the incident light 20 impinging on the oil guide Y3 is reflected and another portion is transmitted out of the oil guide Y3. Wherein the reflected light 40 is irradiated onto the photo resistor R17, and the transmitted light 60 is irradiated onto the photo resistor R18. Under the irradiation of light, the resistance values of the photoresistor R17 and the photoresistor R18 are changed. In the first photo-detecting module 51, the resistor R4 is connected in series with the photo-resistor R17 and then connected between the output terminal of the voltage converting unit 91 and ground, and the divided voltage on the photo-resistor R17 is inputted to the 8 th pin of the master controller U4. In the second photo-detecting module 52, the resistor R5 and the photo-resistor R18 are connected in series and then connected between the output terminal of the voltage converting unit 91 and the ground, and the divided voltage on the photo-resistor R18 is inputted to the 7 th pin of the master U4. In the master controller U4, the corresponding relationship between the amount of smoke oil absorbed by the oil guide Y3 and the voltage division value on the photo resistor is stored in advance, so the master controller U4 can obtain the amount of smoke oil absorbed by the oil guide Y3 according to the magnitude of the voltage division value received by the 8 th pin and the 7 th pin, and further output a control signal through the 4 th pin to control the brightness of the light emitting diodes LED3 and LED 4. The master controller U4 further outputs PWM (pulse width modulation) signals with different duty ratios to the gate of the switching tube Q2 from the 2 nd pin according to the amount of smoke. The source of the switching tube Q2 is connected to the positive electrode of the battery BT, the drain is connected to one end of the resistor R19, and the other end of the resistor R19 is grounded. Therefore, when the switch Q2 is turned on, the resistor R19 is powered on, and a current flows through the resistor R19 to generate heat, thereby atomizing the tar. The master controller U4 adjusts the on-time of the switching tube Q2 by adjusting the duty cycle of the PWM signal output from the 2 nd pin, thereby controlling the average atomization power of the resistor R19.
In addition, the battery pack 100 further includes a battery voltage detection module including resistors R13 and R14, and an output voltage detection module including resistors R7 and R11. The battery voltage detection module is used for detecting the voltage value of the battery. The output voltage detection module is used for detecting the voltage output to the resistor R19 by the switch tube Q2. One end of the resistor R13 is connected to the positive electrode of the battery BT, the other end is connected to one end of the resistor R14, and the other end of the resistor R14 is grounded. The divided voltage of the resistor R14 is input to the 9 th pin of the master controller U4, and the master controller U4 obtains the voltage of the battery by detecting the voltage value of the 9 th pin. One end of the resistor R7 is connected with the drain of the switch tube Q2, the other end is connected with one end of the resistor R11, and the other end of the resistor R11 is grounded. The divided voltage of the resistor R11 is inputted to the 6 th pin of the master U4, and the master U4 obtains the voltage outputted by the switch tube Q2 by detecting the voltage value of the 6 th pin. Through implementing battery voltage detection module and output voltage detection module, master controller U4 can master battery voltage and the voltage of inputing on resistance R19, and then can adjust atomizing power through the on-time of adjusting resistance R19. Because the electric quantity of the battery can be reduced along with the use time, the output voltage can be reduced, and in order not to influence the taste of the cigarette, when the voltage output by the battery is reduced, the atomization time needs to be prolonged, so that the tobacco tar is sufficiently atomized. Therefore, in a preferred embodiment of the present invention, the master U4 not only outputs the power control signal according to the voltage division signal on the photoresistors R17 and R18, but also outputs the power control signal by comprehensively considering the voltage on the battery BT.
In this embodiment, the master U4 has a model of MC32P7010A0I, which includes 10 pins. In addition to the 2 nd to 9 th pins described above, the 1 st pin of the master controller U4 is connected to the positive pole of the battery BT through an anti-reverse diode D2 to supply power to the master controller U4. Meanwhile, pin 1 of the master U4 is connected to a grounded capacitor C4. Pin 10 of master U4 is connected to ground.
Fig. 3 is a block diagram of an electronic cigarette according to a third embodiment of the present invention. As shown in fig. 3, the electronic cigarette of the present embodiment includes: the device comprises a main controller 1, an atomizer heating wire 2, an oil guide piece 3 which is in contact with the atomizer heating wire 2, a light emitting module 4, a light detection module 5, a power adjusting module 6, an oil amount prompting module 7, a smoking triggering module 8 and a power module 9. Wherein the light emitting module 4 and the light detecting module 5 constitute the light detecting component in the present embodiment. The working principle of the electronic cigarette provided by the embodiment is as follows:
the power module 9 is used for supplying power to each functional module in the circuit, and is electrically connected to the light emitting module 4, the light detection module 5, the oil amount prompting module 7, the smoking triggering module 8, the main controller 1 and the power adjusting module 6 respectively. In order to emphasize the core signal flow in the present application, fig. 3 omits the electrical connection of the power supply module 9 and a part of the functional modules.
Smoking trigger module 8 is used for sending the smoking signal to master controller 1. In a preferred embodiment of the present invention, the smoking triggering module 8 may be a key switch. When the user is ready to smoke or stops smoking, only the key switch needs to be triggered. User's button signal can be sent to master controller 1, and master controller 1 further controls the break-make of electron cigarette. In another preferred embodiment provided by the present invention, the smoking triggering module 8 may also be an airflow sensor. When the user smokes, the airflow inductor can sense the negative pressure generated in the electronic cigarette when the user smokes, and when the negative pressure exceeds a preset threshold value, the airflow inductor sends a smoking signal to the main controller 1 to start the electronic cigarette.
The main controller 1 controls the light-emitting module 4 to emit light after receiving the smoking signal sent by the smoking triggering module 8. After the incident light 20 emitted by the light emitting module 4 irradiates the oil guiding member 3, the transmitted light 60 transmitted from the oil guiding member 3 is received by the light detecting module 5 and converted into an electrical signal to be transmitted to the main controller 1. The intensity of the electrical signal is related to the intensity of the received transmitted light 60. The intensity of the transmitted light 60 is related to the amount of soot absorbed by the oil guide 3. The electrical signal is therefore related to the amount of soot absorbed by the oil guide 3, and this relationship has been stored in the master controller 1 beforehand. After the main controller 1 receives the electric signal sent by the light detection module 5, the amount information of the smoke oil absorbed in the oil guide member 3 can be obtained according to the corresponding relation between the pre-stored electric signal and the amount of the smoke oil, and the amount information of the smoke oil is sent to the oil amount prompt module 7 to be displayed. Meanwhile, the main controller 1 sends a control signal to the power adjusting module 6 according to the amount of the tobacco tar to adjust the atomizing power of the electric heating wire 2 of the atomizer.
The atomizer heating wire 2 is typically a resistive device that generates high temperature by electrical heating, thereby atomizing the tobacco tar. The oil guiding piece 3 is contacted with the electric heating wire 2 of the atomizer, and guides the tobacco tar to the electric heating wire 2 of the atomizer for the electric heating wire 2 of the atomizer to atomize. The atomizer heating wire 2 is connected to the power adjusting module 6, and the atomizing power of the atomizer heating wire 2 is adjusted by the power adjusting module 6.
The fuel quantity prompt module 7 may include a display screen and/or an indicator light. Wherein, the display screen is used for displaying the numbers and/or characters related to the oil quantity. The indicator light can indicate the quantity of the oil through the brightness degree, and can also indicate the shortage of the oil through a flashing mode. It should be understood that in the utility model discloses in, oil mass suggestion module 7 is an optional functional module, can select whether to be contained in according to actual need in the utility model provides an electron cigarette.
The embodiment provides an utilize light signal detection to lead the cigarette oil mass that oil piece 3 absorbed and adjust the electron cigarette's of atomization power's electron cigarette according to the cigarette oil mass electron cigarette, can show promotion electron cigarette taste and atomization efficiency, and detection cost is low moreover, the method is simple and easily realize. Compared with the first embodiment, the electronic cigarette has the advantages that only one light detection module is adopted, and the circuit structure of the electronic cigarette is simpler. However, the use of two light detection modules at the same time can improve the reliability of detection.
Fig. 4 is a circuit diagram of an electronic cigarette according to a fourth embodiment of the present invention. As shown in fig. 4, the electronic cigarette circuit diagram of the present embodiment can be divided into two parts, one part is the circuit diagram of the battery assembly 300, and the other part is the circuit diagram of the atomizer 400. The battery assembly 300 and the nebulizer 400 are electrically connected to each other through respective interfaces to form an electronic cigarette circuit diagram.
In the battery pack 300, the battery BT and the voltage conversion unit 91 (shown by a dotted line frame) constitute a power supply module of the present application for supplying a voltage to each circuit module. The voltage conversion unit 91 is configured to convert the voltage of the battery BT into an appropriate voltage. The voltage converted by the voltage conversion unit 91 is input to the light emitting module, the first photo detection module 51, and the second photo detection module 52. As shown in fig. 2, the voltage conversion unit 91 includes a voltage conversion chip U3. In this embodiment, the voltage conversion chip U3 has 3 pins used, the 1 st pin is the voltage input terminal Vin, the 3 rd pin is the voltage output terminal Vout, and the 2 nd pin is the ground terminal GND. The 1 st pin of the voltage conversion chip U3 is connected to the positive electrode of the battery BT, the 3 rd pin of the voltage conversion chip U3 is connected to the anode of the light emitting diode LED5, the resistor R4 and the resistor R5, respectively, and the 2 nd pin of the voltage conversion chip U3 is grounded. In addition, a capacitor C2 is connected between the 1 st pin and the 2 nd pin of the voltage conversion chip U3, and a resistor R3 and a capacitor C3 are connected between the 3 rd pin and the second pin of the voltage conversion chip U3. The key switch SW2 is a smoking triggering module, and the user sends a smoking signal to the master U4 by triggering the key switch SW 2. The switching tube Q2 is a power regulating module. The light emitting diode LED3 and the LED4 constitute a fuel amount indication module.
In the atomizer 400, the LED5 is a light emitting module, and emits the incident light 20 to the oil guide Y3. The resistor R5 and the photo-sensor R18 constitute a photo-detection module 5 (shown by a dashed box) for receiving the transmitted light 40 transmitted from the oil guide Y3. The oil guide Y3 is in contact with the resistor R19 and guides the smoke oil to the resistor R19. The resistor R19 is an atomizer heating wire which atomizes the tobacco tar guided from the oil guide Y3 by means of electro-heating.
The working principle of the whole circuit is as follows:
one end of the key switch SW2 is connected to the 3 rd pin of the master U4, and the other end is grounded. When the key switch SW2 is pressed, the pin 3 of the master U4 inputs a low level, and the pin 5 of the master U4 outputs a low level. Since the anode of the LED5 is connected to the output terminal of the power conversion unit 91 and the cathode thereof is connected to the 5 th pin of the main controller U4 through the resistor R12, when the 5 th pin of the main controller U4 outputs a low level, the LED5 is turned on, so that the incident light 20 is emitted to irradiate the oil guide Y3. Under the illumination of the LED5, a portion of the incident light 20 is transmitted out of the oil guide Y3 to form a transmitted light 60. The transmitted light 60 impinges on the photo resistor R18. Under the irradiation of light, the resistance value of the photoresistor R18 changes. In the photo-detecting module 5, the resistor R5 and the photo-resistor R18 are connected in series and then connected between the output terminal of the power conversion unit 91 and the ground, and the divided voltage on the photo-resistor R18 is inputted to the 7 th pin of the master controller U4. In the master controller U4, the corresponding relationship between the amount of smoke oil absorbed by the oil guide Y3 and the voltage dividing value on the photo resistor is stored in advance, so the master controller U4 can obtain the amount of smoke oil absorbed by the oil guide Y3 according to the magnitude of the voltage dividing value received by the 7 th pin, and further output a control signal through the 4 th pin to control the brightness of the light emitting diodes LED3 and LED 4. The master controller U4 further outputs PWM (pulse width modulation) signals with different duty ratios to the gate of the switching tube Q2 from the 2 nd pin according to the amount of smoke. The source of the switching tube Q2 is connected to the positive electrode of the battery BT, the drain is connected to one end of the resistor R19, and the other end of the resistor R19 is grounded. Therefore, when the switch Q2 is turned on, the resistor R19 is powered on, and a current flows through the resistor R19 to generate heat, thereby atomizing the tar. The master controller U4 adjusts the on-time of the switching tube Q2 by adjusting the duty cycle of the PWM signal output from the 2 nd pin, thereby controlling the average atomization power of the resistor R19.
In addition, the battery pack 100 further includes a battery voltage detection module including resistors R13 and R14, and an output voltage detection module including resistors R7 and R11. The battery voltage detection module is used for detecting the voltage value of the battery. The output voltage detection module is used for detecting the voltage output to the resistor R19 by the switch tube Q2. One end of the resistor R13 is connected to the positive electrode of the battery BT, the other end is connected to one end of the resistor R14, and the other end of the resistor R14 is grounded. The divided voltage of the resistor R14 is input to the 9 th pin of the master controller U4, and the master controller U4 obtains the voltage of the battery by detecting the voltage value of the 9 th pin. One end of the resistor R7 is connected with the drain of the switch tube Q2, the other end is connected with one end of the resistor R11, and the other end of the resistor R11 is grounded. The divided voltage of the resistor R11 is inputted to the 6 th pin of the master U4, and the master U4 obtains the voltage outputted by the switch tube Q2 by detecting the voltage value of the 6 th pin. Through implementing battery voltage detection module and output voltage detection module, master controller U4 can master battery voltage and the voltage of inputing on resistance R19, and then can adjust atomizing power through the on-time of adjusting resistance R19. Because the electric quantity of the battery can be reduced along with the use time, the output voltage can be reduced, and in order not to influence the taste of the cigarette, when the voltage output by the battery is reduced, the atomization time needs to be prolonged, so that the tobacco tar is sufficiently atomized. Therefore, in a preferred embodiment of the present invention, the master U4 not only outputs the power control signal according to the voltage division signal on the photoresistors R17 and R18, but also outputs the power control signal by comprehensively considering the voltage on the battery BT.
In this embodiment, the master U4 has a model of MC32P7010A0I, which includes 10 pins. In addition to the 2 nd to 7 th pins and the 9 th pins described above, the 1 st pin of the master controller U4 is connected to the positive pole of the battery BT through an anti-reverse diode D2 so as to supply power to the master controller U4. Meanwhile, pin 1 of the master U4 is connected to a grounded capacitor C4. Pin 10 of master U4 is connected to ground. Pin 8 of master U4 is floating.
Fig. 5 is a block diagram of a master controller according to a fifth embodiment of the present invention. As shown in fig. 5, the main controller 1 of the present embodiment includes a threshold comparison module 11 and a control module 12. The threshold comparison module 11 is configured to compare the electrical signal received by the main controller 1 from the light detection module 5 with a preset threshold. The control module 12 is configured to output power control signals with different duty ratios to the power adjusting module 6 according to the comparison result of the threshold comparing module 11. Specifically, when the electrical signal is greater than a preset first threshold, the control module 12 outputs a first duty ratio power control signal to the power adjusting module 6; when the electrical signal is greater than a preset second threshold and smaller than the first threshold, the control module 12 outputs a second duty ratio power control signal to the power adjusting module 6; when the electrical signal is greater than a preset third threshold and smaller than the second threshold, the control module 12 outputs a third duty ratio power control signal to the power adjusting module 6; otherwise, the control module 12 further outputs a fourth duty ratio power control signal to the power adjusting module 6.
Fig. 6 is a flowchart of a method for automatically controlling atomization power according to a sixth embodiment of the present invention. As shown in fig. 6, the method for automatically controlling atomization power provided by this embodiment is applied to an electronic cigarette, and the method includes the following steps:
s1, the main controller detects whether a smoking signal exists, if so, the step S2 is switched to; otherwise, continuing to detect;
the main controller detects the smoking signal input by the smoking triggering module in real time and judges whether smoking action or smoking triggering action exists. If yes, the next step of processing is carried out, and if not, the detection is continued.
S2, the main controller outputs a control signal to control the light-emitting module to emit light;
when a smoking action or a pressure-absorbing triggering action is detected, the signal output pin of the main controller outputs a control signal to control the light-emitting module to emit light.
S3, irradiating the oil guide piece by the light-emitting module;
in a preferred embodiment provided by the present invention, the light emitting module employs a light emitting diode. The light emitted by the light-emitting diode is irradiated on the oil storage and guide member, and the reflected light intensity and the transmitted light intensity of the light irradiated on the oil guide member are correspondingly different according to the different amounts of the smoke and oil absorbed on the oil guide member.
S4, the light detection module detects refracted light or reflected light of the oil guide member and outputs an electric signal reflecting the transmittance of the oil guide member to the main controller;
in a preferred embodiment of the present invention, the light detection module comprises a photo resistor or a photo sensor. When the transmitted light or the reflected light of the oil guide part irradiates on the photoresistor or the photosensitive sensor, the resistance on the photoresistor or the photosensitive sensor changes along with the change of the intensity of the irradiated light, and then different electric signals are output to the main controller. Therefore, the electric signal output by the light receiving module reflects the light intensity of the reflected light and/or the transmitted light, and further reflects the amount of the smoke absorbed by the oil guide member.
In another preferred embodiment provided by the present invention, step S4 further includes: s41, detecting reflected light of the oil guide piece and outputting a first electric signal; and S42, detecting the transmission light of the oil guide piece and outputting a second electric signal. The main controller obtains the smoke volume according to the first electric signal and the second electric signal.
S5, the main controller outputs a power control signal according to the electric signal;
as described above, the electrical signal corresponds to the amount of soot absorbed by the oil guide, and this correspondence is stored in the main controller in advance. The main controller can obtain the tobacco tar amount information absorbed by the oil guide piece according to the received electric signal and the corresponding relation between the pre-stored electric signal and the tobacco tar amount, and then outputs a corresponding power control signal.
And S6, the power adjusting module adjusts the atomizing power of the electric heating wire of the atomizer according to the power control signal.
The embodiment provides a method for detecting the amount of smoke absorbed by an oil guide part by using an optical signal and adjusting the atomization power of an electronic cigarette according to the amount of the smoke, so that the taste and the atomization efficiency of the electronic cigarette can be remarkably improved, and the detection cost is low, and the method is simple and easy to realize.
Fig. 7 is a flow chart of a method for automatically controlling atomization power according to a seventh embodiment of the present invention. As shown in fig. 7, the method for automatically controlling atomization power provided by this embodiment is applied to an electronic cigarette, and the method includes the following steps:
s1, the main controller detects whether a smoking signal exists, if so, the step S2 is switched to; otherwise, continuing to detect;
the main controller detects the smoking signal input by the smoking triggering module in real time and judges whether smoking action or smoking triggering action exists. If yes, the next step of processing is carried out, and if not, the detection is continued.
S2, the main controller outputs a control signal to control the light-emitting module to emit light;
when a smoking action or a pressure-absorbing triggering action is detected, the signal output pin of the main controller outputs a control signal to control the light-emitting module to emit light.
S3, irradiating the oil guide piece by the light-emitting module;
in a preferred embodiment provided by the present invention, the light emitting module employs a light emitting diode. The light emitted by the light-emitting diode is irradiated on the oil guide member, and the reflected light intensity and the transmitted light intensity of the light irradiated on the oil guide member are correspondingly different according to the different amounts of the smoke and oil absorbed on the oil guide member.
S4, the main controller judges whether smoking is finished, if so, the step S6 is executed, and if not, the step S5 is executed;
the step is added to facilitate the user to select to stop smoking at any time, and the situation that the atomizer is started due to the fact that the user mistakenly presses the smoking trigger button can be effectively prevented.
S5, acquiring a battery voltage VB and an electric signal VF which is input by the optical detection module and reflects the transmittance of the oil guide member, and turning to the step S7;
in the present embodiment, the battery voltage VB may be obtained by the battery voltage detection module as described in the above embodiments and input to the master controller. The electrical signal VF is a voltage signal inputted to the main controller by the optical detection module.
S6, the main controller controls the light-emitting module to be closed, stops outputting the power adjusting signal and returns to the step S1;
if the main controller judges that smoking is finished, the main controller outputs a corresponding signal to the light-emitting module to enable the light-emitting module to be closed, and electric energy is saved. Meanwhile, the main controller stops outputting the power adjusting signal, and the power adjusting module is turned off, so that the resistance wire of the atomizer stops heating.
S7, the main controller judges whether VF is larger than a preset first threshold value VSET1, if yes, the step S8 is switched to, and if not, the step S9 is switched to;
s8, integrating VB, calculating the DUTY ratio to be DUTY1 by the master controller, and turning to the step S14;
in this embodiment, the power adjustment signal output by the main controller is a PWM signal with different duty ratios. The power adjustment signal is related to not only the electrical signal VF provided by the light detection module, but also the voltage VB of the battery. As the time of use increases, the voltage of the battery will drop, causing the atomization power of the atomizer heating wire to decrease. Therefore, in order to overcome the influence of the battery voltage reduction on the atomization power, it is necessary to output the power adjustment signal in consideration of the battery voltage. The power regulating module is a switch tube connected with the electric heating wire of the atomizer in series. The main controller controls the conduction time of the switch tube by sending PWM signals with different duty ratios to the control electrode of the switch tube, and then controls the conduction time of the electric heating wire of the atomizer. In the same period, the conduction time of the electric heating wire of the atomizer is different, and the average atomization power is different.
S9, the main controller judges whether VF is larger than a preset second threshold value VSET2, if yes, the step S10 is switched to, and if not, the step S11 is switched to;
s10, integrating VB, calculating a DUTY ratio of DUTY2 by the master controller, and turning to the step S14;
s11, the main controller judges whether VF is larger than a preset third threshold value VSET3, if yes, the step S12 is switched to, and if not, the step S13 is switched to;
s12, integrating VB, calculating the DUTY ratio to be DUTY3 by the master controller, and turning to the step S14;
s13, integrating VB, calculating the DUTY ratio to be DUTY4 by the master controller, and turning to the step S14;
s14, the main controller outputs the PWM signal of the duty ratio to the power regulation module, and the step S15 is switched;
s15, the power adjusting module adjusts the atomizing power of the electric heating wire of the atomizer according to the power control signal, and the step S4 is turned to.
The present embodiment provides a method of adjusting the e-cigarette aerosolization power by adjusting the duty cycle of the PWM signal, which in turn is determined by three threshold comparisons. Although the present embodiment can output only four power adjustment signals, the method is very simple, easy to implement, and has extremely low hardware and software costs.
The above description relates to various modules. These modules typically include hardware and/or a combination of hardware and software (e.g., firmware). The modules may also include computer-readable media (e.g., non-transitory media) containing instructions (e.g., software instructions) that, when executed by a processor, perform various functional features of the present invention. Accordingly, the scope of the present invention is not limited by the specific hardware and/or software characteristics of the modules explicitly mentioned in the embodiments, unless explicitly required. As a non-limiting example, the present invention may in embodiments be implemented by one or more processors (e.g., microprocessors, digital signal processors, baseband processors, microcontrollers) executing software instructions (e.g., stored in volatile and/or persistent memory). In addition, the present invention may also be implemented with Application Specific Integrated Circuits (ASICs) and/or other hardware components. It should be noted that the above description of the various modules is divided into these modules for clarity of illustration. However, in actual implementation, the boundaries of the various modules may be fuzzy. For example, any or all of the functional modules herein may share various hardware and/or software elements. Also for example, any and/or all of the functional modules herein may be implemented in whole or in part by a common processor executing software instructions. Additionally, various software sub-modules executed by one or more processors may be shared among the various software modules. Accordingly, the scope of the present invention is not to be limited by the mandatory boundaries between the various hardware and/or software elements, unless explicitly claimed otherwise.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.