Electronic atomization device constant power output control system and control method thereof

Abstract

The invention discloses an electronic atomization device constant power output control system and a control method thereof.The electronic atomization device constant power output control system comprises a heating module, a heating wire, a voltage detection module, a current detection module and a PWM control module, and the heating module, the voltage detection module and the current detection module are all electrically connected with the heating wire; the heating module, the voltage detection module and the current detection module are all in signal connection with the PWM control module, the heating module is used for heating the heating wire according to a PWM control signal, the voltage detection module is used for detecting the real-time voltage of the heating wire, and the current detection module is used for detecting the real-time current of the heating wire; the PWM control module is used for determining the heating duty ratio of the current heating period, adjusting the PWM control signal of the current heating period according to the heating duty ratio, and sending the adjusted PWM control signal to the heating module. The accuracy of constant power output control of the electronic atomization device is improved, and the method can be widely applied to the technical field of electronic atomization devices.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization devices, and in particular to a constant power output control system for an electronic atomization device and a control method thereof. Background Art

[0002] When using an electronic atomizer, its output power is affected by fluctuations in battery voltage and heating wire resistance, according to the conventional constant power output principle of electronic atomizer products. The slower and smaller the fluctuations, the smaller the difference between the actual output power and the calculated output power. However, battery voltage fluctuations and changes in heating wire resistance are unavoidable, affecting the accuracy of the electronic atomizer's constant power output control, thereby affecting the safety and reliability of the electronic atomizer and the user experience. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a constant power output control system for an electronic atomization device and a control method thereof, which improves the accuracy of the constant power output control of the electronic atomization device, enhances the safety and reliability of the electronic atomization device, and improves the user experience.

[0004] The first technical solution adopted by the present invention is:

[0005] A constant power output control system for an electronic atomization device includes a heating module, a heating wire, a voltage detection module, a current detection module and a PWM control module. The heating module, the voltage detection module and the current detection module are all electrically connected to the heating wire, and the heating module, the voltage detection module and the current detection module are all signal-connected to the PWM control module. The heating module is used to heat the heating wire according to the PWM control signal output by the PWM control module. The voltage detection module is used to detect the real-time voltage of the heating wire and send the real-time voltage to the PWM control module. The current detection module is used to detect the real-time current of the heating wire and send the real-time current to the PWM control module. The PWM control module is used to determine the heating duty cycle of the current heating cycle based on the real-time voltage and the real-time current, and adjust the PWM control signal of the current heating cycle according to the heating duty cycle, and then send the adjusted PWM control signal to the heating module.

[0006] Furthermore, in one embodiment of the present invention, the heating module includes a first resistor, a second resistor, a third resistor, a first PMOS tube, a heating positive end and a heating negative end, one end of the first resistor and the gate of the first PMOS tube are both connected to one end of the second resistor, the other end of the first resistor and the source of the first PMOS tube are both connected to the power supply voltage, the other end of the second resistor is connected to the output end of the PWM control module, the drain of the first PMOS tube is connected to one end of the third resistor, the other end of the third resistor is connected to the heating positive end, the heating negative end is grounded, and the heating wire is connected between the heating positive end and the heating negative end.

[0007] Furthermore, in one embodiment of the present invention, the positive input terminal of the voltage detection module is connected to the heating positive terminal, the negative input terminal of the voltage detection module is grounded, and the output terminal of the voltage detection module is connected to the first input terminal of the PWM control module.

[0008] Furthermore, in one embodiment of the present invention, the current detection module includes a fourth resistor, a fifth resistor, a first capacitor, a second capacitor and a current detection chip, the positive input terminal of the current detection chip is connected to one end of the third resistor through the fourth resistor, the negative input terminal of the current detection chip is connected to the other end of the third resistor through the fifth resistor, the first capacitor is connected between the positive input terminal and the negative input terminal of the current detection chip, the power supply terminal of the current detection chip is connected to the power supply voltage, the ground terminal of the current detection chip is grounded, the second capacitor is connected between the power supply terminal and the ground terminal of the current detection chip, the output terminal of the current detection chip is connected to the second input terminal of the PWM control module, and the current detection chip is used to obtain the real-time current of the heating wire by detecting the current of the third resistor, and send the real-time current to the PWM control module.

[0009] Furthermore, in one embodiment of the present invention, the PWM control signal includes an initial PWM control signal and an adjusted target PWM control signal within the same heating cycle, and the PWM control module controls the heating module to heat the heating wire within a heating cycle through the following steps:

[0010] generating the initial PWM control signal according to a preset initial heating time, and sending the initial PWM control signal to the heating module, thereby controlling the heating module to heat the heating wire through the initial PWM control signal;

[0011] When the heating module heats the heating wire for a time period that reaches the initial heating time period, the real-time voltage is obtained through the voltage detection module, and the real-time current is obtained through the current detection module;

[0012] determining a heating duty cycle of a current heating cycle according to the real-time voltage and the real-time current, and determining a remaining heating time according to the heating duty cycle;

[0013] The target PWM control signal is generated according to the remaining heating time, and the target PWM control signal is sent to the heating module, and then the heating module is controlled by the target PWM control signal to continue heating the heating wire until the time for which the heating module continues to heat the heating wire reaches the remaining heating time.

[0014] Furthermore, in one embodiment of the present invention, the step of controlling the heating module to heat the heating wire by using the initial PWM control signal is specifically as follows:

[0015] The first PMOS tube is controlled to be turned on according to the initial PWM control signal, so that the heating module heats the heating wire until the time when the first PMOS tube is turned on reaches the initial heating time.

[0016] Furthermore, in one embodiment of the present invention, the step of obtaining the real-time current through the current detection module is specifically as follows:

[0017] The voltage difference across the third resistor is obtained through the current detection chip, and the current of the third resistor is determined according to the voltage difference and the resistance value of the third resistor, and then the real-time current is determined according to the current of the third resistor.

[0018] Furthermore, in one embodiment of the present invention, the step of determining the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current, and determining the remaining heating time according to the heating duty cycle, specifically includes:

[0019] determining the instantaneous heating power of the heating module according to the real-time voltage and the real-time current;

[0020] Obtaining a target heating power for a current heating cycle, and determining a heating duty cycle for the current heating cycle based on the instantaneous heating power and the target heating power;

[0021] The total heating duration is determined according to the heating duty cycle and the total duration of the current heating cycle, and the remaining heating duration is determined according to the total heating duration and the initial heating duration.

[0022] Furthermore, in one embodiment of the present invention, the step of controlling the heating module to continue heating the heating wire by the target PWM control signal until the time for which the heating module continues to heat the heating wire reaches the remaining heating time is specifically as follows:

[0023] The first PMOS tube is controlled to continue to be turned on according to the target PWM control signal, so that the heating module continues to heat the heating wire until the time when the first PMOS tube continues to be turned on reaches the remaining heating time.

[0024] The second technical solution adopted by the present invention is:

[0025] A control method for a constant power output control system of an electronic atomization device, which is executed by the above-mentioned constant power output control system of the electronic atomization device, comprises the following steps:

[0026] The PWM control module generates an initial PWM control signal according to a preset initial heating time, and sends the initial PWM control signal to the heating module, thereby controlling the heating module to heat the heating wire through the initial PWM control signal;

[0027] When the heating module heats the heating wire for a time period that reaches the initial heating time period, the voltage detection module obtains the real-time voltage of the heating wire, and the current detection module obtains the real-time current of the heating wire, and then sends the real-time voltage and the real-time current to the PWM control module;

[0028] Determining a heating duty cycle of a current heating cycle according to the real-time voltage and the real-time current by the PWM control module, and determining a remaining heating time according to the heating duty cycle;

[0029] The PWM control module generates a target PWM control signal according to the remaining heating time, and sends the target PWM control signal to the heating module, thereby controlling the heating module to continue heating the heating wire through the target PWM control signal until the time for which the heating module continues to heat the heating wire reaches the remaining heating time.

[0030] The beneficial effects of the present invention are: the present invention provides a constant power output control system for an electronic atomization device and a control method thereof, comprising a heating module, a heating wire, a voltage detection module, a current detection module and a PWM control module, the heating module being used to heat the heating wire according to the PWM control signal output by the PWM control module, the voltage detection module being used to detect the real-time voltage of the heating wire and send the real-time voltage to the PWM control module, the current detection module being used to detect the real-time current of the heating wire and send the real-time current to the PWM control module, the PWM control module being used to determine the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current, and adjust the PWM control signal of the current heating cycle according to the heating duty cycle, and then send the adjusted PWM control signal to the heating module. The embodiment of the present invention first heats the heating wire according to the initial heating time. By detecting the real-time voltage and real-time current of the heating wire, the heating duty cycle of the current heating cycle can be accurately calculated, so that the remaining heating time of the current heating cycle can be accurately determined and the PWM control signal can be adjusted in time, so that the actual heating power of the heating module in the current heating cycle is consistent with the required target heating power, thereby improving the accuracy of the constant power output control of the electronic atomization device, enhancing the safety and reliability of the electronic atomization device, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of module connections for a constant power output control system for an electronic atomization device provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the circuit connections of the heating module, heating wire, and current detection module provided in an embodiment of the present invention;

[0033] Figure 3 A flowchart of the steps of a control method for a constant power output control system of an electronic atomization device provided by an embodiment of the present invention.

[0034] Reference numerals:

[0035] R, heating wire; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; Q1, first PMOS tube; C1, first capacitor; C2, second capacitor; H+, positive heating terminal; H-, negative heating terminal; U1, current sensing chip; IN+, positive input terminal of current sensing chip; IN-, negative input terminal of current sensing chip; V+, power supply terminal of current sensing chip; GND, ground terminal of current sensing chip; REF, reference voltage terminal of current sensing chip; OUT, output terminal of current sensing chip; BAT+, power supply voltage; S, PWM control signal. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The step numbers in the following embodiments are provided for ease of description only and do not limit the order of the steps. The order of execution of the steps in the embodiments can be adaptively adjusted based on the understanding of those skilled in the art.

[0037] In the description of the present invention, "a plurality" means more than two. If a first or second is described, it is only used to distinguish technical features and should not be understood as indicating or implying relative importance, implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features. In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention.

[0038] Reference Figure 1 An embodiment of the present invention provides a constant power output control system for an electronic atomization device, including a heating module, a heating wire, a voltage detection module, a current detection module and a PWM control module. The heating module, the voltage detection module and the current detection module are all electrically connected to the heating wire, and the heating module, the voltage detection module and the current detection module are all signal-connected to the PWM control module. The heating module is used to heat the heating wire according to the PWM control signal output by the PWM control module. The voltage detection module is used to detect the real-time voltage of the heating wire and send the real-time voltage to the PWM control module. The current detection module is used to detect the real-time current of the heating wire and send the real-time current to the PWM control module. The PWM control module is used to determine the heating duty cycle of the current heating cycle according to the real-time voltage and real-time current, and adjust the PWM control signal of the current heating cycle according to the heating duty cycle, and then send the adjusted PWM control signal to the heating module.

[0039] Specifically, the conventional method of constant power output control of existing electronic atomization devices is achieved through PWM chopping. Therefore, the power supply voltage and the resistance of the heating wire will change throughout the entire working cycle, thereby affecting the accuracy of the constant power output control of the electronic atomization device. In an embodiment of the present invention, a minimum duty cycle D0 for adjusting the power is pre-set (mostly greater than 60%), and an initial heating time T0 is determined based on the minimum duty cycle D0. Based on this, in each heating cycle, an initial PWM control signal can be generated based on the initial heating time T0 and the heating module can be controlled to heat the heating wire. When the heating time reaches the initial heating time T0, the real-time voltage and real-time current of the heating wire are detected, and the heating duty cycle is calculated based on the real-time voltage and real-time current. The total heating time T1 of the current heating cycle is determined based on the heating duty cycle, so that the remaining heating time T2 of the current heating cycle can be determined and a corresponding target PWM control signal is generated. The target PWM control signal is used to control the heating module to continue heating the heating wire for the remaining heating time T2. It can be recognized that the embodiment of the present invention calculates the heating duty cycle of the current heating cycle based on the real-time voltage and real-time current of the heating wire and adjusts the PWM control signal of the current heating cycle. Since the power supply voltage BAT+ will drop during the heating process, if the detected real-time voltage and real-time current are used for the heating power control of the next heating cycle, it will cause a large error. The embodiment of the present invention adjusts the PWM control signal and heating time in a timely manner during the current heating cycle, thereby greatly improving the accuracy of the constant power output control of the electronic atomization device.

[0040] Reference Figure 1 and 2 As an optional embodiment, the heating module includes a first resistor R1, a second resistor R2, a third resistor R3, a first PMOS transistor Q1, a heating positive terminal H+ and a heating negative terminal H-, one end of the first resistor R1 and the gate of the first PMOS transistor Q1 are both connected to one end of the second resistor R2, the other end of the first resistor R1 and the source of the first PMOS transistor Q1 are both connected to the power supply voltage BAT+, the other end of the second resistor R2 is connected to the output end of the PWM control module, the drain of the first PMOS transistor Q1 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to the heating positive terminal H+, the heating negative terminal H- is grounded, and the heating wire R is connected between the heating positive terminal H+ and the heating negative terminal H-.

[0041] Specifically, the heating module includes a first resistor R1, a second resistor R2, a third resistor R3, a first PMOS transistor Q1, a positive heating terminal H+, and a negative heating terminal H-. A heating wire R is connected between the positive heating terminal H+ and the negative heating terminal H-. The heating module controls the on / off switching of the first PMOS transistor Q1 via a PWM control signal S output by the PWM control module, thereby outputting different heating powers between the positive heating terminal H+ and the negative heating terminal H-.

[0042] Reference Figure 1 and 2 As an optional implementation, the positive input terminal of the voltage detection module is connected to the heating positive terminal H+, the negative input terminal of the voltage detection module is grounded, and the output terminal of the voltage detection module is connected to the first input terminal of the PWM control module.

[0043] Specifically, the voltage detection module of the embodiment of the present invention can adopt a common voltage detection chip, or can adopt the ADC pin of the single-chip microcomputer for voltage detection. The embodiment of the present invention is not limited here. In specific implementation, it is only necessary to connect the positive input end of the voltage detection module to the heating positive end H+ of the heating module, and connect the negative input end of the voltage detection module to the ground. The real-time voltage at both ends of the heating wire R can be detected and read, and the real-time voltage can be sent to the PWM control module for subsequent calculation of the heating duty cycle.

[0044] Reference Figure 1 and 2 As an optional embodiment, the current detection module includes a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2 and a current detection chip U1. The positive input terminal IN+ of the current detection chip U1 is connected to one end of the third resistor R3 through the fourth resistor R4, and the negative input terminal IN- of the current detection chip U1 is connected to the other end of the third resistor R3 through the fifth resistor R5. The first capacitor C1 is connected between the positive input terminal and the negative input terminal of the current detection chip U1. The power supply terminal V+ of the current detection chip U1 is connected to the power supply voltage BAT+, the ground terminal GND of the current detection chip U1 is grounded, the second capacitor C2 is connected between the power supply terminal and the ground terminal of the current detection chip U1, and the output terminal OUT of the current detection chip U1 is connected to the second input terminal of the PWM control module. The current detection chip U1 is used to obtain the real-time current of the heating wire R by detecting the current of the third resistor R3, and send the real-time current to the PWM control module.

[0045] Specifically, the current detection module includes a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2 and a current detection chip U1. Figure 2As shown, the reference voltage terminal REF and the ground terminal GND of the current detection chip U1 are both grounded. When the first PMOS tube Q1 is turned on, the voltage detection module obtains the voltage U across the heating wire R. At the same time, the current detection chip U1 obtains the voltage difference V across the third resistor R3 through the fourth resistor R4 and the fifth resistor R5, and calculates the current I3=V / R3 flowing through the third resistor R3, so that the real-time current I=I3=V / R3 of the heating wire R can be determined, and the real-time current is sent to the PWM control module.

[0046] In some optional embodiments, the current detection chip U1 may be any one of the INA199 chip, INA213 chip, INA215 chip, SGM8199 chip and TP181 chip.

[0047] As a further optional embodiment, the PWM control signal includes an initial PWM control signal and an adjusted target PWM control signal within the same heating cycle. The PWM control module controls the heating module to heat the heating wire within a heating cycle through the following steps:

[0048] Generate an initial PWM control signal according to a preset initial heating time, and send the initial PWM control signal to the heating module, thereby controlling the heating module to heat the heating wire through the initial PWM control signal;

[0049] When the heating module heats the heating wire for a certain period of time, the real-time voltage is obtained through the voltage detection module, and the real-time current is obtained through the current detection module.

[0050] Determine the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current, and determine the remaining heating time according to the heating duty cycle;

[0051] A target PWM control signal is generated according to the remaining heating time, and the target PWM control signal is sent to the heating module, which then controls the heating module to continue heating the heating wire through the target PWM control signal until the heating module continues to heat the heating wire for a time that reaches the remaining heating time.

[0052] As an optional embodiment, the step of controlling the heating module to heat the heating wire by the initial PWM control signal is specifically as follows:

[0053] The first PMOS tube is controlled to be turned on according to the initial PWM control signal, so that the heating module heats the heating wire until the conduction time of the first PMOS tube reaches the initial heating time.

[0054] As an optional implementation, the step of obtaining the real-time current through the current detection module is specifically as follows:

[0055] The voltage difference across the third resistor is obtained through the current detection chip, and the current of the third resistor is determined according to the voltage difference and the resistance value of the third resistor, and then the real-time current is determined according to the current of the third resistor.

[0056] As a further optional implementation, the step of determining the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current, and determining the remaining heating time according to the heating duty cycle, specifically includes:

[0057] Determine the instantaneous heating power of the heating module according to the real-time voltage and real-time current;

[0058] Obtain the target heating power of the current heating cycle, and determine the heating duty cycle of the current heating cycle based on the instantaneous heating power and the target heating power;

[0059] The total heating time is determined according to the heating duty cycle and the total time of the current heating cycle, and the remaining heating time is determined according to the total heating time and the initial heating time.

[0060] As an optional embodiment, the target PWM control signal is used to control the heating module to continue heating the heating wire until the heating module continues to heat the heating wire for a remaining heating time. Specifically, the step is as follows:

[0061] The first PMOS tube is controlled to continue to be turned on according to the target PWM control signal, so that the heating module continues to heat the heating wire until the time when the first PMOS tube continues to be turned on reaches the remaining heating time.

[0062] Specifically, since the power supply voltage of the electronic atomization device is usually between 3.0 and 4.2V, the output power is greater than 5W, and the resistance of the heating wire is between 1.1 and 1.4R, the minimum output duty cycle D0 = 5 / (4.2*4.2 / 1.1) = 31% can be calculated, thereby determining the initial heating time T0 = D0*T, where T represents the total time of a heating cycle. Therefore, the heating module can be controlled to heat the heating wire in the following manner within a single heating cycle: within a single heating cycle, the heating module is first controlled to heat the heating wire with the initial heating time T0, and when the heating time is about to reach the initial heating time T0, the voltage detection module is used to detect the real-time voltage U at both ends of the heating wire, and the current detection module is used to detect the real-time current I flowing through the heating wire, and the instantaneous heating power P = U of the heating module when the first PMOS tube is turned on is calculated. 2 / I, assuming the target heating power (average power) required is Pw, then the heating duty cycle of the current heating cycle is D = Pw / P = Pw*I / U 2 , the total heating time of the current heating cycle T1=D*T=Pw*I*T / U 2, and then calculate the remaining heating time of the current heating cycle T2 = T1-T0 = Pw*I*T / U 2 -T0, and then control the heating module to continue heating the heating wire for the remaining heating time T2 to complete the heating power control of the current heating cycle.

[0063] The above is an explanation of the system structure and workflow of an embodiment of the present invention. It can be understood that the embodiment of the present invention first heats the heating wire according to the initial heating time. By detecting the real-time voltage and real-time current of the heating wire, the heating duty cycle of the current heating cycle can be accurately calculated, so that the remaining heating time of the current heating cycle can be accurately determined and the PWM control signal can be adjusted in time, so that the actual heating power of the heating module in the current heating cycle is consistent with the required target heating power, thereby improving the accuracy of the constant power output control of the electronic atomization device, enhancing the safety and reliability of the electronic atomization device, and improving the user experience.

[0064] Reference Figure 3 The embodiment of the present invention provides a control method for a constant power output control system of an electronic atomization device, which is executed by the above-mentioned constant power output control system of the electronic atomization device, comprising the following steps:

[0065] S101, generating an initial PWM control signal according to a preset initial heating time by a PWM control module, and sending the initial PWM control signal to a heating module, thereby controlling the heating module to heat the heating wire by the initial PWM control signal;

[0066] S102: When the heating module heats the heating wire for a period of time equal to the initial heating time, the voltage detection module obtains the real-time voltage of the heating wire, and the current detection module obtains the real-time current of the heating wire, and then sends the real-time voltage and real-time current to the PWM control module;

[0067] S103, determining the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current through the PWM control module, and determining the remaining heating time according to the heating duty cycle;

[0068] S104. Generate a target PWM control signal according to the remaining heating time through the PWM control module, and send the target PWM control signal to the heating module, thereby controlling the heating module to continue heating the heating wire through the target PWM control signal until the time for the heating module to continue heating the heating wire reaches the remaining heating time.

[0069] It can be understood that the contents of the above system embodiments are applicable to the present method embodiments, the functions specifically implemented by the present method embodiments are the same as those of the above system embodiments, and the beneficial effects achieved are also the same as those achieved by the above system embodiments.

[0070] It should be appreciated that embodiments of the present invention can be implemented or practiced by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The above methods can be implemented in a computer program using standard programming techniques—including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner—according to the methods and figures described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. In addition, the program can be run on a programmed application-specific integrated circuit for this purpose.

[0071] Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by the context. The processes described herein (or variations and / or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) that is executed collectively on one or more processors, by hardware, or a combination thereof. The computer programs described above include a plurality of instructions that may be executed by one or more processors.

[0072] Furthermore, the above methods can be implemented in any type of computing platform that is operably connected to a suitable computer, including but not limited to a personal computer, a minicomputer, a mainframe, a workstation, a network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Various aspects of the present invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, an optical read and / or write storage medium, RAM, ROM, etc., so that it can be read by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein. In addition, the machine-readable code, or portions thereof, can be transmitted over a wired or wireless network. When such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor, the invention described herein includes these and other different types of non-transitory computer-readable storage media. When programmed according to the methods and techniques described herein, the present invention also includes the computer itself.

[0073] The computer program can be applied to input data to perform the functions described herein, thereby converting the input data to generate output data that is stored in a non-volatile memory. The output information can also be applied to one or more output devices such as a display. In a preferred embodiment of the present invention, the converted data represents a physical and tangible object, including a specific visual depiction of the physical and tangible object produced on the display.

[0074] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. Within the scope of protection of the present invention, various modifications and variations of the technical solutions and / or implementation methods are possible.

Claims

1. A constant power output control system for an electronic atomization device, characterized by: It includes a heating module, a heating wire, a voltage detection module, a current detection module and a PWM control module. The heating module, the voltage detection module and the current detection module are all electrically connected to the heating wire, and the heating module, the voltage detection module and the current detection module are all signal-connected to the PWM control module. The heating module is used to heat the heating wire according to the PWM control signal output by the PWM control module. The voltage detection module is used to detect the real-time voltage of the heating wire and send the real-time voltage to the PWM control module. The current detection module is used to detect the real-time current of the heating wire and send the real-time current to the PWM control module. The PWM control module is used to determine the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current, and adjust the PWM control signal of the current heating cycle according to the heating duty cycle, and then send the adjusted PWM control signal to the heating module.

2. The constant power output control system for an electronic atomization device according to claim 1, characterized in that: The heating module includes a first resistor, a second resistor, a third resistor, a first PMOS tube, a heating positive end and a heating negative end. One end of the first resistor and the gate of the first PMOS tube are both connected to one end of the second resistor, the other end of the first resistor and the source of the first PMOS tube are both connected to the power supply voltage, the other end of the second resistor is connected to the output end of the PWM control module, the drain of the first PMOS tube is connected to one end of the third resistor, the other end of the third resistor is connected to the heating positive end, the heating negative end is grounded, and the heating wire is connected between the heating positive end and the heating negative end.

3. The constant power output control system for an electronic atomization device according to claim 2, characterized in that: The positive input terminal of the voltage detection module is connected to the heating positive terminal, the negative input terminal of the voltage detection module is grounded, and the output terminal of the voltage detection module is connected to the first input terminal of the PWM control module.

4. The constant power output control system for an electronic atomization device according to claim 2, characterized in that: The current detection module includes a fourth resistor, a fifth resistor, a first capacitor, a second capacitor and a current detection chip. The positive input end of the current detection chip is connected to one end of the third resistor through the fourth resistor, and the negative input end of the current detection chip is connected to the other end of the third resistor through the fifth resistor. The first capacitor is connected between the positive input end and the negative input end of the current detection chip. The power supply end of the current detection chip is connected to the power supply voltage, the ground end of the current detection chip is grounded, the second capacitor is connected between the power supply end and the ground end of the current detection chip, and the output end of the current detection chip is connected to the second input end of the PWM control module. The current detection chip is used to obtain the real-time current of the heating wire by detecting the current of the third resistor, and send the real-time current to the PWM control module.

5. The constant power output control system of an electronic atomization device according to claim 4, characterized in that: The PWM control signal includes an initial PWM control signal and an adjusted target PWM control signal within the same heating cycle. The PWM control module controls the heating module to heat the heating wire within a heating cycle through the following steps: generating the initial PWM control signal according to a preset initial heating time, and sending the initial PWM control signal to the heating module, thereby controlling the heating module to heat the heating wire through the initial PWM control signal; When the heating module heats the heating wire for a time period that reaches the initial heating time period, the real-time voltage is obtained through the voltage detection module, and the real-time current is obtained through the current detection module; determining a heating duty cycle of a current heating cycle according to the real-time voltage and the real-time current, and determining a remaining heating time according to the heating duty cycle; The target PWM control signal is generated according to the remaining heating time, and the target PWM control signal is sent to the heating module, and then the heating module is controlled by the target PWM control signal to continue heating the heating wire until the time for which the heating module continues to heat the heating wire reaches the remaining heating time.

6. The constant power output control system of an electronic atomization device according to claim 5, characterized in that: The step of controlling the heating module to heat the heating wire by using the initial PWM control signal is specifically as follows: The first PMOS tube is controlled to be turned on according to the initial PWM control signal, so that the heating module heats the heating wire until the time when the first PMOS tube is turned on reaches the initial heating time.

7. The constant power output control system of an electronic atomization device according to claim 5, characterized in that: The step of obtaining the real-time current through the current detection module is specifically as follows: The voltage difference across the third resistor is obtained through the current detection chip, and the current of the third resistor is determined according to the voltage difference and the resistance value of the third resistor, and then the real-time current is determined according to the current of the third resistor.

8. The constant power output control system of an electronic atomization device according to claim 5, characterized in that: The step of determining the heating duty cycle of the current heating cycle according to the real-time voltage and the real-time current, and determining the remaining heating time according to the heating duty cycle, specifically includes: determining the instantaneous heating power of the heating module according to the real-time voltage and the real-time current; Obtaining a target heating power for a current heating cycle, and determining a heating duty cycle for the current heating cycle based on the instantaneous heating power and the target heating power; The total heating duration is determined according to the heating duty cycle and the total duration of the current heating cycle, and the remaining heating duration is determined according to the total heating duration and the initial heating duration.

9. The constant power output control system of an electronic atomization device according to claim 5, characterized in that: The step of controlling the heating module to continue heating the heating wire by using the target PWM control signal until the time for the heating module to continue heating the heating wire reaches the remaining heating time is specifically as follows: The first PMOS tube is controlled to continue to be turned on according to the target PWM control signal, so that the heating module continues to heat the heating wire until the time when the first PMOS tube continues to be turned on reaches the remaining heating time.

10. A control method for a constant power output control system of an electronic atomization device, for use with the constant power output control system of an electronic atomization device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The PWM control module generates an initial PWM control signal according to a preset initial heating time, and sends the initial PWM control signal to the heating module, thereby controlling the heating module to heat the heating wire through the initial PWM control signal; When the heating module heats the heating wire for a time period that reaches the initial heating time period, the voltage detection module obtains the real-time voltage of the heating wire, and the current detection module obtains the real-time current of the heating wire, and then sends the real-time voltage and the real-time current to the PWM control module; Determining a heating duty cycle of a current heating cycle according to the real-time voltage and the real-time current by the PWM control module, and determining a remaining heating time according to the heating duty cycle; The PWM control module generates a target PWM control signal according to the remaining heating time, and sends the target PWM control signal to the heating module, thereby controlling the heating module to continue heating the heating wire through the target PWM control signal until the time for which the heating module continues to heat the heating wire reaches the remaining heating time.

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