Microwave control system and method and microwave heating aerosol generating device

Abstract

The invention discloses a microwave control system and method and a microwave heating aerosol generating device.The microwave control system comprises a first detection module, a second detection module, a processor module and a power amplifier module, and can capture the posture and action of a user on the basis of multi-mode sensor information; according to the microwave aerosol generating device, advanced microwave heating control is achieved, the instantaneous power of microwave heating can be reduced, the heating temperature rise speed is increased as much as possible, the microwave aerosol generating device rapidly reaches the use temperature, and meanwhile the safety and reliability of microwave heating are improved. The microwave control system is used in the microwave heating aerosol generating device, so that the microwave heating aerosol generating device has better heating efficiency and higher safety, the service life of the device is longer, and the use experience of a user is better. The microwave heating device can be widely applied to the technical field of microwave heating.

Description

Technical Field

[0001] The present invention relates to the technical field of microwave heating, and in particular to a microwave control system, method and microwave heating aerosol generating device. Background Art

[0002] A microwave heating aerosol generating device is a device that uses microwave heating technology to convert the sol substance in a liquid into aerosol. It generally consists of a microwave generating system, a microwave control system, a nebulizer, a heating chamber, etc. In a microwave heating aerosol generating device, a microwave signal is generated by the microwave generating system and transmitted to the heating chamber through the microwave control system. The nebulizer in the heating chamber atomizes the sol substance in the liquid into tiny particles, and then through the action of microwave heating, the particles are rapidly heated up to form aerosol. An electronic cigarette device is a common microwave heating aerosol generating device, which is loved by users because of its light weight, easy to carry and convenient to use.

[0003] In the related art, in order to improve the efficiency of heating and producing aerosol of a microwave heating aerosol generating device such as an electronic cigarette device, generally, a high-power microwave band electromagnetic wave is fed into the heating chamber in a short time, which can improve the heating and temperature rising speed as much as possible. However, in practical applications, it is found that high-power microwave band electromagnetic waves are likely to cause electromagnetic exposure damage to the human body, and local overheating may occur in the impedance mutation part of the microwave source or microwave radiator, and the overall safety of the device is poor.

[0004] In summary, the problems existing in the related art need to be solved urgently. Summary of the Invention

[0005] An object of the present invention is to solve at least to some extent one of the technical problems existing in the related art.

[0006] To this end, an object of the present invention is to provide a microwave control system, which can improve the safety and reliability of microwave heating while increasing the heating and temperature rising speed.

[0007] In order to achieve the above technical object, the technical solutions adopted by the present invention include:

[0008] On the one hand, an embodiment of the present invention provides a microwave control system, including:

[0009] A first detection module, a second detection module, a processor module and a power amplifier module;

[0010] The first detection module is used to detect the degree of the human palm covering the microwave aerosol generating device to generate a first sensing signal, and the second detection module is used to detect the second sensing signal generated when the posture of the human holding the microwave aerosol generating device changes;

[0011] The first detection module and the second detection module are connected to the input end of the processor module;

[0012] The input end of the power amplifier module is used to connect to the microwave generation pre-circuit, and the output end of the power amplifier module is used to connect to the microwave source output circuit; the output end of the processor module is connected to the power amplifier module.

[0013] In addition, a microwave control system according to the above embodiments of the present invention may further have the following additional technical features:

[0014] Further, in an embodiment of the present invention, the first detection module includes at least one of a pressure sensor or a temperature sensor.

[0015] Further, in an embodiment of the present invention, the second detection module includes at least one of an accelerometer or a gyroscope.

[0016] Further, in an embodiment of the present invention, the processor module includes an STC12 series single-chip microcomputer chip or an STM32 series single-chip microcomputer chip.

[0017] Further, in an embodiment of the present invention, the first detection module includes a pressure sensor, a temperature sensor, and a first feedback module;

[0018] The output end of the pressure sensor and the output end of the temperature sensor are connected to the input end of the first feedback module, and the output end of the first feedback module is connected to the processor module.

[0019] Further, in an embodiment of the present invention, the second detection module includes an accelerometer, a gyroscope, and a second feedback module;

[0020] The output end of the accelerometer and the output end of the gyroscope are connected to the input end of the second feedback module, and the output end of the second feedback module is connected to the processor module.

[0021] Further, in an embodiment of the present invention, the first detection module further includes a microwave sensor unit, the input end of the microwave sensor unit is used to connect to the microwave generation pre-circuit, and the output end of the microwave sensor unit is connected to the first feedback module.

[0022] Further, in an embodiment of the present invention, the power amplifier module includes a first power amplifier, a second power amplifier, a third power amplifier, and a fourth power amplifier;

[0023] The input end of the first power amplifier is used to connect to the microwave generation pre - circuit. The output end of the first power amplifier is connected to the input end of the second power amplifier. The output end of the second power amplifier is connected to the input ends of the third power amplifier and the fourth power amplifier. The output ends of the third power amplifier and the fourth power amplifier are used to connect to the microwave source output circuit.

[0024] Further, in an embodiment of the present invention, the power amplifier module includes a first power amplifier, a second power amplifier, a third power amplifier, and a switching circuit;

[0025] The input end of the first power amplifier is used to connect to the microwave generation pre - circuit. The output end of the first power amplifier is connected to the input end of the second power amplifier. The output end of the second power amplifier is connected to the input end of the third power amplifier and the first end of the switching circuit. The output end of the third power amplifier is used to connect to the microwave source output circuit. The second end of the switching circuit is used to connect to the microwave source output circuit.

[0026] On the other hand, an embodiment of the present invention provides a microwave - heated aerosol - generating device, including:

[0027] A power supply, a microwave source, and a microwave radiator;

[0028] The power supply is used to supply power to the microwave source. The microwave source is used to send microwaves to the microwave radiator to heat a medium to generate aerosol;

[0029] Wherein, the microwave source includes a microwave generation system and the aforementioned microwave control system.

[0030] On the other hand, an embodiment of the present invention provides a microwave control method for realizing microwave heating control through the aforementioned microwave control system. The method includes:

[0031] A first sensing signal generated by detecting the degree of human palm covering the microwave aerosol - generating device through the first detection module;

[0032] A second sensing signal generated by detecting the change in the posture of a human holding the microwave aerosol - generating device through the second detection module;

[0033] Inputting the first sensing signal and the second sensing signal into the processor module for fusion processing, and controlling the working state of the power amplifier module by the processor module according to the result of the fusion processing.

[0034] Further, in one embodiment of the present invention, controlling the working state of the power amplifier module according to the result of the fusion processing by the processor module includes:

[0035] determining, by the processor module, whether the microwave aerosol generating device will be used according to the result of the fusion processing;

[0036] If it is determined that the microwave aerosol generating device will be used, the processor module controls the power amplifier module to start a power amplification operation.

[0037] Furthermore, in one embodiment of the present invention, a multimodal fusion model is configured in the processor module; the step of inputting the first sensor signal and the second sensor signal into the processor module for fusion processing comprises:

[0038] The first sensor signal and the second sensor signal are input into the multimodal fusion model, and the multimodal fusion model is used to predict whether the microwave aerosol generating device will be used to obtain a state prediction result; the state prediction result is used to characterize whether the multimodal fusion model predicts that the microwave aerosol generating device will be used or the microwave aerosol generating device will not be used temporarily.

[0039] The advantages and beneficial effects of the present invention will be partly given in the following description, partly become apparent from the following description, or be understood through the practice of the present invention:

[0040] The present application discloses a microwave control system, method and microwave heating aerosol generating device, the microwave control system includes a first detection module, a second detection module, a processor module and a power amplifier module, and can realize advance microwave heating control by capturing the posture and action of the user based on multi-modal sensor information, which can be helpful to reduce the instantaneous power of microwave heating, improve the safety and reliability of microwave heating while increasing the heating temperature rise speed as much as possible and making the microwave aerosol generating device quickly reach the use temperature. The microwave heating aerosol generating device uses the above-mentioned microwave control system, has good heating efficiency and high safety, has a long service life of the device, and provides a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a microwave control system provided in an embodiment of the present application is shown;

[0042] Figure 2 A schematic structural diagram of a microwave aerosol generating device provided in an embodiment of the present application is shown;

[0043] Figure 3Shows a schematic structural principle diagram of a microwave control system provided in an embodiment of the present application;

[0044] Figure 4 Shows a schematic power output diagram of a power amplifier module provided in an embodiment of the present application;

[0045] Figure 5 Shows a schematic structural principle diagram of another microwave control system provided in an embodiment of the present application. Detailed implementation manners

[0046] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "upper", "lower", "front", "rear", "left", "right", "top", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] A microwave heating aerosol generating device is a device that uses microwave heating technology to convert the sol substance in a liquid into aerosol. It generally consists of a microwave generating system, a microwave control system, a nebulizer, a heating chamber, etc. In the microwave heating aerosol generating device, a microwave signal is generated by the microwave generating system and transmitted to the heating chamber through the microwave control system. The nebulizer in the heating chamber atomizes the sol substance in the liquid into tiny particles, and then through the action of microwave heating, the particles are rapidly heated up to form aerosol. An electronic cigarette device is a common microwave heating aerosol generating device, which is popular among users because of its light weight, easy to carry and convenient to use.

[0050] In the related art, in order to improve the efficiency of heating and producing aerosol of microwave heating aerosol generating devices such as electronic cigarette devices, generally, high-power microwave-band electromagnetic waves are fed into the heating chamber in a short time, which can improve the heating and temperature-rising speed as much as possible. However, it is found in practical applications that high-power microwave-band electromagnetic waves are likely to cause electromagnetic exposure damage to the human body, and local overheating may occur in the impedance mutation part of the microwave source or microwave radiator, and the overall safety of the device is poor.

[0051] In view of this, in the embodiments of the present application, a microwave control system, method and microwave heating aerosol generating device are provided. The system can, based on multi-modal sensor information, capture the posture and actions of the user to achieve advanced microwave heating control, which is beneficial to reducing the instantaneous power of microwave heating, improving the safety and reliability of microwave heating while improving the heating and temperature-rising speed as much as possible. The microwave heating aerosol generating device uses the above-mentioned microwave control system, has good heating efficiency and high safety, has a long service life of the device, and a better user experience.

[0052] Next, with reference to specific drawings, a microwave control system, method and microwave heating aerosol generating device provided in the embodiments of the present application will be described in detail.

[0053] A microwave control system provided in the embodiments of the present application can be applied to the field of microwave heating technology. Specifically, please refer to Figure 1 , Figure 1 which shows a microwave control system provided in the embodiments of the present application. The system mainly includes:

[0054] A first detection module, a second detection module, a processor module and a power amplifier module;

[0055] The first detection module is used to detect the first sensing signal generated by the degree of human palm covering the microwave aerosol generating device, and the second detection module is used to detect the second sensing signal generated when the posture of the human holding the microwave aerosol generating device changes;

[0056] The first detection module and the second detection module are connected to the input end of the processor module;

[0057] The input end of the power amplifier module is used to connect to the microwave generation front-end circuit, and the output end of the power amplifier module is used to connect to the microwave source output circuit; the output end of the processor module is connected to the power amplifier module.

[0058] In the embodiment of the present application, a microwave control system is provided which can realize advance microwave heating control by capturing the user's posture and movements based on multi-modal sensor information. The microwave control system can be applied to a microwave aerosol generating device, please refer to Figure 2 , Figure 2 A microwave aerosol generating device provided in an embodiment of the present application is shown. Generally speaking, the microwave aerosol generating device may include a power supply, a microwave source, a microwave radiator and a heated medium, wherein the power supply is used to provide electrical energy to the entire device for normal operation; the microwave source can be used to generate microwave signals and perform a certain power amplification processing on the microwave signals for heating the medium; the microwave radiator can be used to radiate the microwave signals to the heated medium in a specific manner to achieve a heating effect; the heated medium is used to receive the microwave signals and convert them into thermal energy, thereby being heated to form an aerosol.

[0059] Reference Figure 2 In a microwave source, there are generally microwave generation systems and microwave control systems. The microwave generation system is responsible for generating microwave signals. It is usually composed of oscillators and other devices, and generates high-frequency microwave signals through stable electromagnetic wave oscillations. The microwave control system can be used to control the power, frequency, and working mode of microwave signals. It is usually composed of processors, power amplifiers, frequency regulators, etc. The microwave control system can achieve precise control and regulation of microwave signals.

[0060] In the microwave control system provided in the embodiment of the present application, it mainly includes a first detection module, a second detection module, a processor module and a power amplifier module. Among them, the first detection module and the second detection module are used to capture the posture and action of the user, and transmit the relevant signals to the processor module, and the processor module can control the power amplifier module according to the detected signals. In this way, before the user actually starts to use the microwave aerosol generating device, the microwave signal can be output in advance to realize the advance microwave heating control, which can be helpful to reduce the instantaneous power of microwave heating, while maximizing the heating temperature rise speed and making the microwave aerosol generating device quickly reach the use temperature, and improving the safety and reliability of microwave heating.

[0061] Specifically, in the embodiments of the present application, the first detection module can be used to detect the degree of the human palm covering the microwave aerosol generating device to generate a first sensing signal. Here, the first sensing signal can include one or more signals. Exemplarily, for example, in the first detection module, there can be at least one of a pressure sensor or a temperature sensor. Taking the case where only a pressure sensor is included in the first detection module as an example, the pressure sensor can be used to detect whether the user is holding the microwave aerosol generating device. For example, a threshold of pressure (or pressure within a certain area) can be set, and the pressure data detected by the pressure sensor is compared with this threshold. If it is greater than the threshold, it can be considered that the user is holding the microwave aerosol generating device. Taking the case where only a temperature sensor is included in the first detection module as an example, the temperature sensor can be used to detect whether the user is holding the microwave aerosol generating device. Similarly, a temperature threshold (such as the body surface temperature of the human palm) can be set, and then it is determined whether the temperature data detected by the temperature sensor reaches this temperature threshold, so as to determine whether the user is holding the microwave aerosol generating device. Of course, in the embodiments of the present application, the first detection module can also include both a pressure sensor and a temperature sensor at the same time. At this time, it can be determined whether the user is holding the microwave aerosol generating device according to the detection conditions of both the pressure sensor and the temperature sensor. For example, when both meet the threshold conditions, it is considered that the user is holding the microwave aerosol generating device.

[0062] In the embodiments of the present application, the second detection module can be used to detect the second sensing signal generated when the posture of the human body holding the microwave aerosol generating device changes. Here, the second sensing signal can also include one or more signals. Exemplarily, for example, in the second detection module, there can be at least one of an accelerometer or a gyroscope. Among them, the accelerometer can detect the acceleration change of an object in a three-dimensional coordinate system, that is, the acceleration vector of the object in space. In the microwave aerosol generating device, the accelerometer can detect the motion state of the device. The gyroscope can measure the rotation speed of an object around the rotation axis, that is, the angular velocity of the object. In the microwave aerosol generating device, the gyroscope can detect the motion states such as the rotation, turning, and tilting of the device. It can be understood that in the embodiments of the present application, the data detected by using the second detection module can be used to analyze the posture, direction, angle change, etc. of the device, so as to determine whether the user generates a posture change during the process of holding the microwave aerosol generating device, and further obtain the conclusion of whether the microwave aerosol generating device is about to be used. Similarly, in the embodiments of the present application, relevant thresholds can be set, and the data detected by the accelerometer or the gyroscope is compared with the thresholds, so as to determine whether the microwave aerosol generating device is about to be used.

[0063] Of course, it can be understood that the above examples are only used to illustrate some optional implementation manners of the first detection module and the second detection module in the embodiments of the present application. The types of sensors included therein can actually be flexibly selected according to needs, and the present application places no restrictions thereon. Moreover, it should be noted that in the embodiments of the present application, the judgment of relevant signals can be implemented based on a comparator at the circuit level. For example, taking the detection of whether a user holds a microwave aerosol generating device by a pressure sensor as an example, the pressure data collected can be simulated by the magnitude of current or voltage. The comparator is used to compare the magnitudes of the analog signals, so that the output port outputs a corresponding action signal. For example: when the pressure data collected by the pressure sensor is greater than a preset pressure threshold, the output port of the comparator can output a high level, indicating that it is determined that the user holds the microwave aerosol generating device; when the pressure data collected by the pressure sensor is less than the preset pressure threshold, the output port of the comparator can output a low level, indicating that it is determined that the user does not hold the microwave aerosol generating device.

[0064] In the embodiments of the present application, the processor module can be implemented with reference to any existing mature product, and the present application places no restrictions thereon. Specifically, in some embodiments, the processor module of the present application can include any one or more processor chips such as MCU single-chip microcomputers, FPGAs, CPLDs, DSPs, ARMs, etc. For example, the single-chip microcomputer chip can be set as the STC12 series single-chip microcomputer chip or the STM32 series single-chip microcomputer chip. Of course, the specific chip selection can be flexibly adjusted according to needs, and the embodiments of the present application do not limit this. In the embodiments of the present application, various signal processing algorithms such as Kalman filtering, multi-Bayesian estimation, artificial neural networks, etc. can be built in the processor module to process the sensing signals, and the present application places no restrictions on the specific algorithm types.

[0065] In the embodiments of the present application, the first detection module and the second detection module are connected to the output end of the processor module and can transmit relevant signals to the processor module. Here, it should be noted that what the first detection module and the second detection module transmit to the processor module can be either some processed determination signals or the original sensor signals, and the present application places no restrictions thereon. Exemplarily, taking the first detection module and the second detection module transmitting sensor signals to the processor module as an example, the processor module can judge whether the user is about to use the microwave aerosol generating device according to the transmitted sensor signals. Specifically, if the sensor signals transmitted by the first detection module and the second detection module both meet the threshold requirements, it can be determined that the user is about to use the microwave aerosol generating device. At this time, the processor module can control the power amplifier module to act and perform the amplification operation of the microwave signal, so as to achieve the pre-set microwave heating.

[0066] In the embodiment of the present application, the input end of the power amplifier module is used to connect to the microwave generation pre-circuit, receive the weak signal from the microwave generation pre-circuit, and amplify it to a sufficient power level. This can ensure that the microwave signal can be effectively transmitted to the microwave source output circuit. The output end of the power amplifier module is connected to the microwave source output circuit to transmit the amplified microwave signal, ensuring that the microwave source can output sufficient powerful microwave energy for heating the medium. In the embodiment of the present application, the output end of the processor module is connected to the power amplifier module to control the working state of the power amplifier module. The processor module can adjust the working parameters of the power amplifier module, such as the power level, according to needs to achieve precise control of the microwave signal. Specifically, in the embodiment of the present application, the processor module can achieve pre-start of the power amplifier module according to the signals of the first detection module and the second detection module, and perform heating operations before the user starts using the microwave aerosol generating device.

[0067] Of course, it should be noted that in the embodiment of the present application, the relevant signals in the first detection module and the second detection module can also be combined with a timer to comprehensively achieve determination. For example, the cumulative duration of the user satisfying certain sensor signals can be detected, and when the cumulative duration reaches the threshold, it is determined that the power amplifier module can be started. The timer component here can be set in the first detection module, the second detection module, or the processor module, and the present application does not limit this.

[0068] Please refer to Figure 3 , Figure 3The figure shows a schematic structural principle diagram of a microwave control system provided in an embodiment of the present application. In the embodiment of the present application, as described above, what the first detection module and the second detection module transmit to the processor module can be some processed determination signals. Therefore, some processor chips can also be included in the first detection module and the second detection module. In the embodiment of the present application, a first feedback module can be included in the first detection module. The first feedback module can be used to process some sensor signals and thus output processed discrimination signals to the processor module. Specifically, taking the first detection module including a pressure sensor and a temperature sensor as an example, the output ends of the pressure sensor and the temperature sensor can be connected to the input end of the first feedback module, and the output end of the first feedback module can be connected to the processor module. The first feedback module here can perform related determination operations through a built-in comparator. Exemplarily, for example, when the outer surface area of the microwave aerosol generating device covered by the user's palm exceeds 70%, and the local pressure of the covered part of the palm exceeds 0.02 Pa, and at the same time the temperature sensor reaches the palm body surface temperature in the hand-held area for 0 to 1 second, the first-level feedback module generates a signal determining that the user is holding the microwave aerosol generating device, and this signal can be a high-level signal. In contrast, if the detection signals output by the pressure sensor and the temperature sensor do not meet the predetermined conditions, the first-level feedback module can output a low-level signal to the processor module.

[0069] Similarly, a second feedback module can be included in the second detection module. The function of the second feedback module is similar to that of the first feedback module and can be used to process the detection signals of the accelerometer or the gyroscope. The accelerometer and the gyroscope can be connected to the input end of the second feedback module, and the output end of the second feedback module can be connected to the processor module to output relevant determination signals. Exemplarily, for example, within the time period of 0 to 5 seconds, the acceleration generated by the accelerometer reaches between 0.9 and 2 m / s², and the pitch angle generated by the gyroscope exceeds a 90-degree offset. The second-level feedback module generates a signal determining that the user is about to use the microwave aerosol generating device, and this signal can be a high-level signal. In contrast, if the detection signals output by the accelerometer and the gyroscope do not meet the predetermined conditions, the second-level feedback module can output a low-level signal to the processor module.

[0070] Of course, it can be understood that the above introduction to the first-level feedback module and the second feedback module is only for exemplary illustration. In actual applications, those skilled in the art can flexibly set the relevant processing algorithms of the first-level feedback module and the second feedback module according to requirements and existing technologies, and the present application does not limit this.

[0071] In the embodiments of the present application, for the processor module, relevant processing algorithms can be used internally to implement signal processing. For example, a multi-modal fusion model can be used. It should be noted that the present application does not involve improvements to specific algorithm logics, and the model algorithms can refer to related technologies for implementation.

[0072] In the embodiments of the present application, for the power amplifier module, it can include multiple power amplifier components. For example, please refer to Figure 3 , in some embodiments, the power amplifier module can include a first power amplifier 1, a second power amplifier 2, a third power amplifier 3, and a fourth power amplifier 4. Among them, the input end of the first power amplifier 1 is used to connect to the microwave generation pre-circuit, the output end is connected to the input end of the second power amplifier 2, the output end of the second power amplifier 2 is connected to the input ends of the third power amplifier 3 and the fourth power amplifier 4, and the output ends of the third power amplifier 3 and the fourth power amplifier 4 are used to connect to the microwave source output circuit. The operating states of these power amplifiers can be controlled by the processor module. Exemplarily, the processor module can achieve its operation by controlling the conduction of relevant switching tubes in the power amplifier. For example, the processor module can control the first power amplifier to conduct or turn off, so that the first power amplifier performs amplification operations or stops operating.

[0073] In the embodiments of the present application, by setting multiple power amplifier components in the power amplifier module, stepped power output can be achieved. Exemplarily, please refer to Figure 4 , Figure 4 shows a schematic diagram of the power output of a power amplifier module provided in the embodiments of the present application. In the embodiments of the present application, when the sensor signals of the first detection module and the second detection module meet the conditions for the user to use the microwave heating aerosol generating device, the processor module can control the first power amplifier 1 and the second power amplifier 2 to conduct, the conduction between the second power amplifier 2 and the third power amplifier 3 and the fourth power amplifier 4, or the separate conduction between the second power amplifier 2 and the third power amplifier 3 (or the fourth power amplifier 4) to achieve a preheating effect, that is, the conduction between the microwave source and the microwave radiator.

[0074] More preferably, when the user is about to use the microwave heating aerosol generating device, the conduction between the second power amplifier 2 and the third power amplifier 3 (or the fourth power amplifier 4) can be controlled separately. In this way, the power input to the microwave radiator can be about half of the maximum power. When the user starts to use the microwave heating aerosol generating device, the conduction between the second power amplifier 2, the third power amplifier 3, and the fourth power amplifier 4 is controlled to be fully conducted. At this time, the power input to the microwave radiator is the maximum power. In this way, the power output can be reduced during the preheating process and increased during the actual use process, better meeting the actual needs of the user.

[0075] Of course, in the embodiments of the present application, the actual power amplifier module is not limited to the above situation. Exemplarily, in some embodiments, the fourth power amplifier can be replaced by a switching circuit. At this time, the first end of the switching circuit is connected to the output end of the second power amplifier, and the second end of the switching circuit is used to connect to the microwave source output circuit. The whole switching circuit is connected in parallel with the third power amplifier. By selecting to conduct the third power amplifier or the switching circuit through the processor module, the output power level can be regulated. In the embodiments of the present application, no specific limitation is imposed on the specific structure of the switching circuit, and it can be flexibly selected according to needs.

[0076] In some embodiments, the first detection module may further include a microwave sensor unit. Please refer to Figure 5 , Figure 5 , which shows the schematic structural principle diagram of another microwave control system provided in the embodiments of the present application. In the embodiments of the present application, the input end of the microwave sensor unit can be connected to the microwave generation pre-stage circuit, and the microwave generation pre-stage circuit can input a low-power microwave signal to the microwave sensor unit. When the user's palm covers the microwave aerosol generating device, the human body can be equivalent to a near-field parallel load, and different contact objects will cause different frequency offset signals in the microwave sensor unit. Specifically, the original microwave low-power signal loop can be equivalent to an LC1 oscillation circuit, where C1 is the capacitance of the whole circuit. At this time, the resonant frequency of the circuit can be expressed as:

[0077]

[0078] When the user's palm covers the microwave aerosol generating device, taking the human body as the parallel equivalent capacitance C2, the resonant frequency of the circuit can be expressed as:

[0079]

[0080] It can be seen that when the user covers the microwave aerosol generating device with his palm, the resonant frequency of the circuit will change. Therefore, the microwave sensor unit can be used to detect whether the user is holding the microwave aerosol generating device based on this principle, and the detection signal can be transmitted to the processor module.

[0081] Figure 5 In the process, the processor module of the microwave control system can also establish a communication connection with an external intelligent terminal device to transmit relevant data. The intelligent terminal device can be used to store the sensor signal of the microwave heating aerosol generating device for a long time and monitor the real-time status of the microwave heating aerosol generating device. In this way, the problem of limited storage capacity of the microwave heating aerosol generating device itself can be alleviated, and the operation stability and reliability of the microwave heating aerosol generating device can be improved.

[0082] In an embodiment of the present application, a microwave-heated aerosol generating device is also provided, comprising a power supply, a microwave source and a microwave radiator. The power supply is used to power the microwave source, the microwave source is used to send microwaves to the microwave radiator to heat the medium to generate aerosol, and the microwave source comprises a microwave generating system and the aforementioned microwave control system.

[0083] It can be understood that the microwave heating aerosol generating device provided in the embodiment of the present application can realize advance microwave heating control, which can be beneficial to reduce the instantaneous power of microwave heating, while maximizing the heating temperature rise rate and making the microwave aerosol generating device quickly reach the use temperature, while improving the safety and reliability of microwave heating, having good heating efficiency and high safety, a longer service life of the device, and a better user experience.

[0084] In an embodiment of the present application, a microwave control method is further provided, which is used to realize microwave heating control through the aforementioned microwave control system, and the method comprises:

[0085] The first detection module detects the degree to which the palm of a human body covers the microwave aerosol generating device to generate a first sensing signal;

[0086] Detecting, by the second detection module, a second sensing signal generated when a posture of a human body holding the microwave aerosol generating device changes;

[0087] The first sensing signal and the second sensing signal are input into the processor module for fusion processing, and the processor module controls the working state of the power amplifier module according to the result of the fusion processing.

[0088] In the embodiment of the present application, the first sensing signal can be obtained by detecting the first detection module in the aforementioned microwave control system, and the second sensing signal can be obtained by detecting the second detection module. After obtaining the first detection signal and the second detection signal, the two signals can be transmitted to the processor module for fusion processing, and the working state of the power amplifier module can be controlled according to the result of the fusion processing. Here, the specific detection method and the control logic of the power amplifier module have been introduced in the aforementioned system embodiment, and will not be repeated here.

[0089] It can be understood that the microwave control method in the embodiment of the present application can integrate multi-modal sensor signals and realize advance microwave heating control by capturing the user's posture and movements, which can help reduce the power of microwave heating and improve the safety and reliability of microwave heating while maximizing the heating temperature rise rate.

[0090] Specifically, in some embodiments, controlling the working state of the power amplifier module according to the result of the fusion processing by the processor module includes:

[0091] determining, by the processor module, whether the microwave aerosol generating device will be used according to the result of the fusion processing;

[0092] If it is determined that the microwave aerosol generating device will be used, the processor module controls the power amplifier module to start a power amplification operation.

[0093] In the embodiments of the present application, a related multimodal fusion model can be configured in the processor module. That is, the multimodal fusion model can be miniaturized after pruning and placed in the processor module to achieve multimodal fusion. In the embodiments of the present application, the first sensing signal and the second sensing signal can be input into the multimodal fusion model, and the multimodal fusion model is used to predict whether the microwave aerosol generating device will be used, and a state prediction result is obtained. Here, the state prediction result can be used to represent that the multimodal fusion model predicts that the microwave aerosol generating device will be used or the microwave aerosol generating device will not be used temporarily. The present application does not limit the specific data format of the state prediction result, which can include at least one of numbers, vectors, matrices, or tensors. Exemplarily, in some embodiments, the data form of the state prediction result can be a numerical value, such as numerical value 0 or numerical value 1, and each numerical value corresponds to a result category. For example, numerical value 1 indicates that the multimodal fusion model predicts that the microwave aerosol generating device will be used, and numerical value 0 indicates that the multimodal fusion model predicts that the microwave aerosol generating device will not be used temporarily. In some embodiments, the data form of the state prediction result can be a vector, such as vectors (1, 0), (0, 1). Similarly, each vector can correspond to a result category. The present application does not limit the correspondence between the numerical value, the vector, and the specific state prediction result category.

[0094] In the embodiments of the present application, the processor module can determine whether the microwave aerosol generating device will be used according to the result of the fusion process. It can be understood that the multimodal fusion model can compensate for the limitations of a single modality by fusing multiple different signal data types, thereby improving the prediction accuracy of the model. Specifically, in the embodiments of the present application, the multimodal fusion model can select Kalman filtering, multi-Bayesian estimation, artificial neural networks, etc., and integrate the information transmitted by the first detection module and the second detection module to output an execution signal to the power amplifier module. If it is determined that the microwave aerosol generating device will be used, the processor module can control the power amplifier module to start power amplification operations; on the contrary, if it is determined that the microwave aerosol generating device will not be used temporarily, the processor module can control the power amplifier module to be in a state of stopping power amplification operations. In this way, the microwave signal can be amplified when the microwave aerosol generating device is to be used, so as to achieve preheating by microwaves, which can improve the user experience and at the same time improve the overall safety of the microwave aerosol generating device.

[0095] In the description of this specification, the descriptions referring to terms such as "one embodiment", "another embodiment", or "certain embodiments" mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0096] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A microwave control system, characterized in that, Including: A first detection module, a second detection module, a processor module, and a power amplifier module; The first detection module is used to detect the degree of human palm covering the microwave aerosol generating device to generate a first sensing signal, and the second detection module is used to detect a second sensing signal generated when the posture of the human holding the microwave aerosol generating device changes; The first detection module and the second detection module are connected to the input end of the processor module; The input end of the power amplifier module is used to connect to the microwave generation pre-circuit, and the output end of the power amplifier module is used to connect to the microwave source output circuit; the output end of the processor module is connected to the power amplifier module.

2. The microwave control system according to claim 1, characterized in that, The first detection module includes at least one of a pressure sensor or a temperature sensor.

3. A microwave control system according to claim 1, wherein The second detection module includes at least one of an accelerometer or a gyroscope.

4. A microwave control system according to claim 1, characterized in that, The processor module includes an STC12 series single-chip microcomputer chip or an STM32 series single-chip microcomputer chip.

5. A microwave control system according to claim 1, wherein The first detection module includes a pressure sensor, a temperature sensor, and a first feedback module; The output end of the pressure sensor and the output end of the temperature sensor are connected to the input end of the first feedback module, and the output end of the first feedback module is connected to the processor module.

6. A microwave control system according to claim 1, characterized in that, The second detection module includes an accelerometer, a gyroscope, and a second feedback module; The output end of the accelerometer and the output end of the gyroscope are connected to the input end of the second feedback module, and the output end of the second feedback module is connected to the processor module.

7. A microwave control system according to claim 5, characterized in that, The first detection module further includes a microwave sensor unit, the input end of the microwave sensor unit is used to connect to the microwave generation pre-circuit, and the output end of the microwave sensor unit is connected to the first feedback module.

8. A microwave control system according to claim 1, characterized in that, The power amplifier module includes a first power amplifier, a second power amplifier, a third power amplifier, and a fourth power amplifier; The input end of the first power amplifier is used to connect to the microwave generation pre-circuit, the output end of the first power amplifier is connected to the input end of the second power amplifier, the output end of the second power amplifier is connected to the input ends of the third power amplifier and the fourth power amplifier, and the output ends of the third power amplifier and the fourth power amplifier are used to connect to the microwave source output circuit.

9. A microwave control system according to claim 1, wherein, The power amplifier module includes a first power amplifier, a second power amplifier, a third power amplifier, and a switch circuit; The input end of the first power amplifier is used to connect to the microwave generation pre-circuit, the output end of the first power amplifier is connected to the input end of the second power amplifier, the output end of the second power amplifier is connected to the third power amplifier and the first end of the switch circuit, the output end of the third power amplifier is used to connect to the microwave source output circuit, and the second end of the switch circuit is used to connect to the microwave source output circuit.

10. A microwave control method, characterized in that, For realizing microwave heating control through the microwave control system according to any one of claims 1-9, the method includes: Detecting, by the first detection module, a first sensing signal generated by the degree of human palm covering the microwave aerosol generating device; The second detection module is used to detect a second sensing signal generated when the human body holds the microwave aerosol generating device and the attitude changes; The first sensing signal and the second sensing signal are input into the processor module for fusion processing, and the processor module controls the working state of the power amplifier module according to the result of the fusion processing.

11. A microwave control method according to claim 10, characterized in that, The processor module controls the working state of the power amplifier module according to the result of the fusion processing, including: The processor module determines whether the microwave aerosol generating device will be used according to the result of the fusion processing; If it is determined that the microwave aerosol generating device will be used, the processor module controls the power amplifier module to start power amplification operation.

12. A microwave control method according to claim 10, characterized in that, A multi-modal fusion model is configured in the processor module; the inputting the first sensing signal and the second sensing signal into the processor module for fusion processing includes: Inputting the first sensing signal and the second sensing signal into the multi-modal fusion model, and predicting whether the microwave aerosol generating device will be used through the multi-modal fusion model to obtain a state prediction result; the state prediction result is used to represent that the multi-modal fusion model predicts that the microwave aerosol generating device will be used or the microwave aerosol generating device will not be used temporarily.

13. A microwave heating aerosol generating device, characterized in that, It includes a power supply, a microwave source and a microwave radiator; The power supply is used to supply power to the microwave source, and the microwave source is used to send microwaves to the microwave radiator to heat the medium to generate aerosol; Wherein, the microwave source includes a microwave generating system and the microwave control system according to any one of claims 1-9.

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