Intelligent induction air duct

Abstract

The utility model discloses an intelligent induction air duct. The intelligent induction air duct comprises an air duct holding assembly, an air duct air outlet assembly, an air duct induction plate, an electric heating wire, a power supply controller, a motor control module, a touch control induction module and an electric heating control module. By integrating the touch sensing module, handheld detection is achieved, opening and closing of the electric heating wire are intelligently controlled, constant-power control is achieved during heating of the electric heating wire through the electric heating control module, and the stability of the handheld air duct is improved. According to the utility model, the use experience of a user is effectively improved, and the use safety of the user is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of electrical appliances, in particular to an intelligent induction hair dryer. Background Art

[0002] Existing hair dryers typically use a manual switch to turn the heating element on and off, making operation inconvenient and posing safety risks. When the user releases the switch, the heating element remains active, potentially leading to overheating and safety issues. Furthermore, traditional hair dryers use brushed motors, which are noisy and have a short lifespan, hindering long-term user experience.

[0003] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an intelligent induction hair dryer to solve the problem of potential safety hazards caused by existing heating devices.

[0005] The technical solution of the utility model is as follows:

[0006] An intelligent sensing hair dryer comprises: a hair dryer holding assembly, a hair dryer air outlet assembly, a hair dryer sensing plate, a heating wire, a power controller, a motor control module, a touch sensing module and an electric heating control module; wherein, the output end of the power controller is connected to the motor control module for supplying power to the motor control module; the hair dryer air outlet assembly is respectively connected to the motor control module, the heating wire and the hair dryer holding assembly for controlling the start, operation and stop of the hair dryer air outlet assembly through the motor control module; the hair dryer sensing plate is covered on the hair dryer holding assembly for obtaining touch information when the user holds the hair dryer; the hair dryer sensing plate is connected to the touch sensing module for transmitting the touch information obtained by the hair dryer sensing plate; the touch sensing module is connected to the heating wire for controlling the operating state of the heating wire according to the user's touch information; the electric heating control module is connected to the heating wire for controlling the working power of the heating wire when it is heating.

[0007] The utility model is further provided that the air outlet assembly of the intelligent induction air duct includes: a brushless DC motor and a fan; wherein, the brushless DC motor is a three-phase brushless DC motor, and the brushless DC motor is respectively connected to the fan and the power controller, and is used to convert electrical energy into mechanical energy to drive the fan to discharge air.

[0008] The utility model is further provided that the motor control module of the intelligent induction hair dryer includes: a first-phase drive circuit, a second-phase drive circuit, a third-phase drive circuit, a first resistor, and a second resistor; wherein, the first-phase drive circuit is connected to the second-phase drive circuit, the first-phase drive circuit is connected to one end of the first resistor, the second-phase drive circuit is connected to one end of the second resistor, and the third-phase drive circuit is connected to the other end of the first resistor and the other end of the second resistor, for current monitoring and drive control of the brushless DC motor.

[0009] The present utility model is further provided that the touch sensing module of the intelligent sensing hair dryer includes: a first inductor, a first capacitor, an electrolytic capacitor, a third resistor, a connector and a touch sensing chip; wherein, one end of the first capacitor is connected to the power controller, and the first capacitor is connected to the electrolytic capacitor in parallel and then grounded, for storing charge and smoothing the voltage fluctuation of the power controller; one end of the first inductor is connected to the power controller, for stabilizing the direct current transmitted to the touch sensing module; the other end of the first inductor is connected to one end of the touch sensing chip, and the other end of the touch sensing chip is connected to one end of the third resistor, for air sensing and touch sensing of the user's holding state, and the other end of the third resistor is connected to the connector, and the connector is connected to the hair dryer sensing board for receiving user touch information.

[0010] The utility model is further provided that the electric heating control module of the intelligent induction hair dryer includes: a thyristor, a thyristor optocoupler, a fourth resistor, a fifth resistor and a sixth resistor; wherein the thyristor optocoupler is connected to the heating wire to control the on and off of the heating wire and ensure that the heating wire operates at a constant power; one end of the thyristor is connected to a power supply and is respectively connected to the fourth resistor and the fifth resistor to form a trigger circuit; the other end of the thyristor is connected to the input end of the thyristor optocoupler through the sixth resistor to send a trigger signal to the thyristor optocoupler.

[0011] The utility model is further provided that the intelligent sensing hair dryer also includes: a temperature sensing module; wherein, the temperature sensing module is arranged inside the hair dryer air outlet assembly and is connected to the electric heating control module, for monitoring the temperature of the hair dryer air outlet in real time and transmitting the temperature information to the electric heating control module.

[0012] The utility model is further provided that the temperature sensing module of the intelligent sensing hair dryer includes: a second capacitor, a seventh resistor, an eighth resistor and a thermistor; wherein, one end of the second capacitor is grounded for filtering out high-frequency noise in the circuit; one end of the seventh resistor is connected to one end of the eighth resistor through a common connection point, and is connected to one end of the thermistor; one end of the eighth resistor is connected in series with the thermistor, and the other end of the eighth resistor is connected to a DC power supply; the other end of the seventh resistor is connected in series with the other end of the second capacitor to form a parallel relationship with the thermistor, for measuring the voltage change across the thermistor.

[0013] The present invention is further provided that the intelligent induction hair dryer also includes: a physical button; wherein, the physical button is arranged on the hair dryer grip assembly, and is used to adjust the working state of the hair dryer air outlet assembly.

[0014] The utility model is further provided that the intelligent induction hair dryer also includes: a physical button control module; wherein the physical button control module is respectively connected to the brushless DC motor and the heating wire, and is used to adjust the working status of the brushless DC motor and the heating wire.

[0015] The utility model is further provided that the motor control module of the intelligent induction hair dryer also includes: a ninth resistor, a third capacitor, a fourth capacitor and a fifth capacitor; wherein, the third capacitor is connected to the first phase drive circuit, the fourth capacitor is connected to the second phase drive circuit, the fifth capacitor is connected to the third phase drive circuit, one end of the ninth resistor is connected in parallel with the third capacitor, the fourth capacitor and the fifth capacitor, and the other end of the ninth resistor is grounded. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is the working process diagram of the intelligent sensor hair dryer.

[0018] Figure 2 This is a partial structural diagram of the intelligent sensor hair dryer.

[0019] Figure 3 This is the working flow diagram of the touch sensing module.

[0020] Figure 4 This is the circuit structure diagram of the motor control module.

[0021] Figure 5 This is the circuit structure diagram of the touch sensing module.

[0022] Figure 6 This is the circuit structure diagram of the electric heating control module.

[0023] Figure 7 Temperature sensing module circuit diagram.

[0024] Figure 8 This is the circuit structure diagram of the button control module.

[0025] The symbols in the accompanying drawings are: 10, hair dryer grip assembly; 20, hair dryer outlet assembly; 30, hair dryer sensor plate; 40, power controller; 50, heating wire; 60, brushless DC motor; 100, motor control module; 110, first phase drive circuit; 120, second phase drive circuit; 130, third phase drive circuit; 200, touch sensing module; 300, electric heating control module; 400, temperature sensing module; 500, button control module; Btn, physical button; Btn1, wind speed adjustment button; Bt n2, temperature adjustment button; Btn3, one-button cold air button; SW1, first switch; SW2, second switch; SW3, third switch; TA1, thyristor; CON3, connector; U1, first phase driver chip; U2, second phase driver chip; U3, third phase driver chip; U4, touch sensor chip; U5, thyristor optocoupler; L1, first inductor; NTC1, thermistor; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R 6, the sixth resistor; R7, the seventh resistor; R8, the eighth resistor; R9, the ninth resistor; R10, the tenth resistor; R11, the eleventh resistor; R12, the twelfth resistor; R13, the thirteenth resistor; R14, the fourteenth resistor; R15, the fifteenth resistor; R16, the sixteenth resistor; R17, the seventeenth resistor; R18, the eighteenth resistor; R19, the nineteenth resistor; R20, the twentieth resistor; R21, the twenty-first resistor; R22, the twenty-second resistor; ETC1, the electrolytic capacitor; C1, the The first capacitor; C2, the second capacitor; C3, the third capacitor; C4, the fourth capacitor; C5, the fifth capacitor; C6, the sixth capacitor; C7, the seventh capacitor; C8, the eighth capacitor; C9, the ninth capacitor; C10, the tenth capacitor; C11, the eleventh capacitor; C12, the twelfth capacitor; C13, the thirteenth capacitor; C14, the fourteenth capacitor; C15, the fifteenth capacitor; C16, the sixteenth capacitor; C17, the seventeenth capacitor; C18, the eighteenth capacitor; C19, the nineteenth capacitor; C20, the twentieth capacitor. DETAILED DESCRIPTION

[0026] The present invention provides an intelligent sensor hair dryer. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] In the embodiments and patent claims, unless otherwise specified herein, the words "a," "an," "the," and "the" may include plural forms. If the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0028] It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be intermediate elements. In addition, "connected" or "coupled" as used herein can include wireless connections or wireless couplings. The term "and / or" used herein includes all or any units and all combinations of one or more associated listed items.

[0029] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0030] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0031] See also Figure 1 , the utility model provides an intelligent induction hair dryer.

[0032] This embodiment proposes an intelligent induction hair dryer, comprising: a hair dryer grip assembly 10, a hair dryer air outlet assembly 20, a hair dryer induction plate 30, a heating wire 50, a power controller 40, a motor control module 100, a touch sensing module 200 and an electric heating control module 300; wherein the output end of the power controller 40 is connected to the motor control module 100 for supplying power to the motor control module 100; the hair dryer air outlet assembly 20 is respectively connected to the motor control module 100, the heating wire 50 and the hair dryer grip assembly 10 for supplying power to the motor control module 100; 0 controls the start, operation and stop of the hair dryer outlet assembly 20; the hair dryer sensor plate 30 is covered on the hair dryer grip assembly 10, and is used to obtain touch information when the user holds the hair dryer; the hair dryer sensor plate 30 is connected to the touch sensing module 200, and is used to transmit the touch information obtained by the hair dryer sensor plate 30; the touch sensing module 200 is connected to the heating wire 50, and is used to control the operating state of the heating wire 50 according to the user touch information; the electric heating control module 300 is connected to the heating wire 50, and is used to control the working power of the heating wire 50 when it is heating.

[0033] In this embodiment, if Figure 1 and Figure 2 As shown, the power controller 40 outputs direct current to the air outlet assembly 20. Figure 1 and Figure 3 As shown, when the air duct sensing plate 30 receives user touch information, the air duct sensing plate 30 transmits the touch information to the touch sensing module 200, and the heating wire 50 works normally; when the touch sensing plate does not receive user touch information, the touch sensing module 200 stops the heating wire 50 from working through the electric heating control module 300. At this time, the working state of the air duct outlet assembly 20 will not be affected, and the user can put the smart sensing air duct on the shelf and continue to use the cold air function of the smart sensing air duct. The electric heating control module 300 controls the constant power of the heating wire 50 through the software control method of zero-crossing wave loss. For example, when the input voltage fluctuates to 260V, the electric heating control module 300 controls the heating wire 50 to still work at 220V, avoiding the problem that the working voltage of the heating wire 50 is too high and damages the product or even causes fire or burns to the user due to abnormal operation due to excessive temperature.

[0034] In some embodiments, the air outlet assembly 20 of the intelligent sensing air duct includes: a brushless DC motor 60 and a fan; wherein, the brushless DC motor 60 is a three-phase brushless DC motor 60, and the brushless DC motor 60 is respectively connected to the fan and the power controller 40, and is used to convert electrical energy into mechanical energy to drive the fan to discharge air.

[0035] In some embodiments, the motor control module 100 of the intelligent induction hair dryer includes: a first phase drive circuit 110, a second phase drive circuit 120, a third phase drive circuit 130, a first resistor R1, and a second resistor R2; wherein, the first phase drive circuit 110 is connected to the second phase drive circuit 120, the first phase drive circuit 110 is connected to one end of the first resistor R1, the second phase drive circuit 120 is connected to one end of the second resistor R2, and the third phase drive circuit 130 is connected to the other end of the first resistor R1 and the other end of the second resistor R2, for current monitoring and drive control of the brushless DC motor 60.

[0036] In this embodiment, the internal circuit connection mode of the first phase driving circuit 110, the second phase driving circuit 120 and the third phase driving circuit 130 is as follows: Figure 4 The three phases of the brushless DC motor 60 are respectively connected to the three-phase drive circuit in the motor control module 100. The first phase U of the brushless DC motor 60 is connected to the first-phase drive circuit 110, the second phase V of the brushless DC motor 60 is connected to the second-phase drive circuit 120, and the third phase W of the brushless DC motor 60 is connected to the third-phase drive circuit 130.

[0037] In some embodiments, the touch sensing module 200 of the smart sensing hair dryer includes: a first inductor L1, a first capacitor C1, an electrolytic capacitor ETC1, a third resistor R3, a connector CON3 and a touch sensing chip U4; wherein, one end of the first capacitor is connected to the power controller 40, and the first capacitor is connected to the electrolytic capacitor in parallel and then grounded, for storing charge and smoothing the voltage fluctuation of the power controller 40; one end of the first inductor L1 is connected to the power controller 40, for stabilizing the direct current transmitted to the touch sensing module 200; the other end of the first inductor L1 is connected to one end of the touch sensing chip U4, and the other end of the touch sensing chip U4 is connected to one end of the third resistor R3, for air sensing and touch sensing of the user's holding state, and the other end of the third resistor R3 is connected to the connector CON3, and the connector CON3 is connected to the hair dryer sensing plate 30 for receiving user touch information.

[0038] In this embodiment, if Figure 5As shown, the first capacitor C1 is a capacitor marked with 10μF and connected in parallel with a DC voltage source with a voltage of 5V. The electrolytic capacitor EC1 can be an electrolytic capacitor with a voltage of 100μF / 16V and is also connected in parallel with the DC voltage source. The first capacitor C1 and the electrolytic capacitor EC1 are connected in parallel to the DC source. Since the first capacitor C1 and the electrolytic capacitor EC1 are connected in parallel, the total capacitance is the sum of their capacitances. This circuit is used to filter out clutter interference signals for the touch sensing chip U4 and smooth the voltage fluctuations of the power controller 40, providing a stable voltage for the touch sensing chip U4.

[0039] The touch sensing chip U4 integrates a highly sensitive touch circuit and can adapt to touch applications with high sensitivity requirements, such as air button touch and proximity sensing. The hair dryer sensor plate 30 provided on the hair dryer grip assembly 10 is connected to the touch sensing chip U4 as a touch medium, recording user touch data information and transmitting the user touch data information to the touch sensing chip U4. The touch sensing chip U4 controls the working state of the heating wire 50 according to the user touch data information. When the touch sensing chip U4 does not receive the user touch data information, the touch sensing chip U4 controls the heating wire 50 to stop working. When the touch sensing chip U4 receives the user touch data information, the touch sensing chip U4 controls the heating wire 50 to continue working.

[0040] In addition, the pin connection method of the touch sensing chip U4 is as follows: Figure 3 As shown, the touch sensing chip U4 can adopt a Saiyuan touch chip, such as a touch chip with model number SC92F8371M16U.

[0041] In some embodiments, the electric heating control module 300 of the intelligent induction hair dryer includes: a thyristor TA1, a thyristor optocoupler U5, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6; wherein the thyristor optocoupler U5 is connected to the heating wire 50, for controlling the on and off of the heating wire 50 and ensuring that the heating wire 50 operates at a constant power; one end of the thyristor TA1 is connected to a power supply and is respectively connected to the fourth resistor R4 and the fifth resistor R5, for forming a trigger circuit; the other end of the thyristor TA1 is connected to the input end of the thyristor optocoupler U5 through the sixth resistor R6, for sending a trigger signal to the thyristor optocoupler U5.

[0042] In this embodiment, the thyristor optocoupler U5 cooperates with the software algorithm to detect the zero crossing point of the alternating current, and determines how many waveform cycles to discard according to the preset power requirement, controls the conduction frequency of the thyristor optocoupler U5, and realizes that the heating wire 50 maintains a constant power output. For example, if it is necessary to reduce the heating power, it can be set to discard a certain number of cycles in every few cycles (such as discarding 2 cycles in every 10 cycles), so that the average power can be reduced. When the input voltage is lower than 220V, when the thyristor TA1 detects the zero crossing point, the thyristor optocoupler U5 is immediately triggered to turn on after the zero crossing, and the heating wire 50 is heated; when the input voltage increases, the software reduces the number of times the thyristor optocoupler U5 is triggered to turn on, so as to control the heating wire 50 to maintain a constant power output.

[0043] In addition, the thyristor TA1 controls the flow of current by receiving a trigger signal through the gate and maintains the on state through a continuous trigger current until the current in the main circuit drops to zero. The thyristor optocoupler U5 provides electrical isolation between the input and output of the electric heating control module 300, improving operational safety. By transmitting optical signals, the thyristor optocoupler U5 can isolate high-voltage or high-noise circuits, protecting the circuits from high voltage and noise interference.

[0044] In addition, the connection between the thyristor optocoupler U5 and the thyristor TA1 is as follows: Figure 6 The thyristor TA1 may be a thyristor TA1 module of model RS1635F-8 manufactured by RICKY, and the thyristor optocoupler U5 may be a thyristor optocoupler U5 of model QXM3052-CUH-S.

[0045] In some embodiments, the smart sensing hair dryer also includes: a temperature sensing module 400; wherein, the temperature sensing module 400 is arranged inside the hair dryer air outlet assembly 20 and is connected to the electric heating control module 300, for real-time monitoring of the temperature of the air outlet of the hair dryer air outlet assembly 20 and transmitting the temperature information to the electric heating control module 300.

[0046] In this embodiment, when the air outlet temperature of the air duct outlet assembly 20 is higher than the preset temperature of the temperature sensing module 400, the temperature sensing module 400 transmits the temperature information to the electric heating control module 300, and the electric heating control module 300 controls the temperature of the heating wire 50 to be within a safe range.

[0047] In some embodiments, as Figure 7As shown, the temperature sensing module 400 of the intelligent sensing hair dryer includes: a second capacitor C2, a seventh resistor R7, an eighth resistor R8 and a thermistor NTC1; wherein, one end of the second capacitor C2 is grounded for filtering out high-frequency noise in the circuit; one end of the seventh resistor R7 is connected to one end of the eighth resistor R8 through a common connection point, and is connected to one end of the thermistor NTC1; one end of the eighth resistor R8 is connected in series with the thermistor NTC1, and the other end of the eighth resistor R8 is connected to a DC power supply; the other end of the seventh resistor R7 is connected in series with the other end of the second capacitor C2 and then forms a parallel relationship with the thermistor NTC1, which is used to measure the voltage change across the thermistor NTC1.

[0048] In some embodiments, the smart sensing hair dryer further includes: a physical button Btn; wherein, the physical button Btn is arranged on the hair dryer grip assembly 10 and is used to adjust the working state of the hair dryer air outlet assembly 20.

[0049] In this embodiment, the physical button Btn is provided on the hair dryer grip assembly 10 to realize a button mechanical control different from the intelligent sensing control method. The physical button control method of a single button and a single IO port improves reliability and practicality, providing users with more choices.

[0050] like Figure 2 As shown, in some embodiments, the physical buttons include: a wind speed adjustment button Btn1, a temperature adjustment button Btn2, and a one-touch cold air button Btn3. The wind speed adjustment button Btn1 can adjust the wind speed of the air outlet assembly 20 from low to high; the temperature adjustment button Btn2 can increase the air outlet temperature of the air outlet assembly 20; the one-touch cold air button Btn3 is connected to the heating wire 50 and is used to control the heating wire 50 to stop working.

[0051] In some embodiments, the smart induction hair dryer further includes: a physical button control module 500; wherein, the physical button control module 500 is respectively connected to the brushless DC motor 60 and the heating wire 50, for adjusting the working status of the brushless DC motor 60 and the heating wire 50.

[0052] In this embodiment, the physical button control module 500 controls the working status of the brushless DC motor 60 and the heating wire 50, and the control of the heating wire 50 by the physical button control module 500 and the control of the heating wire 50 by the touch sensing module 200 do not affect each other; the control of the heating wire 50 by the physical button control module 500 and the control of the heating wire 50 by the electric heating control module 300 do not affect each other.

[0053] In addition, if Figure 8 As shown, the physical button control module 500 can realize three function button selections. The first button from left to right is the wind speed adjustment button, the second button is the temperature adjustment button, and the third button is the one-button cold air button. The physical button control module 500 includes a first switch SW1, a second switch SW2, a third switch SW3, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, an eighteenth capacitor C18, a nineteenth capacitor C19, and a twentieth capacitor C20. The internal circuit connection method of the physical button adjustment module is as follows: Figure 8 The first switch SW1 is connected to the wind speed adjustment button Btn1, the second switch SW2 is connected to the temperature adjustment button Btn2, and the third switch SW3 is connected to the one-button cold air button Btn3.

[0054] In some embodiments, the motor control module 100 of the intelligent induction hair dryer also includes: a ninth resistor R9, a third capacitor C3, a fourth capacitor C4 and a fifth capacitor C5; wherein, the third capacitor C3 is connected to the first phase drive circuit, the fourth capacitor C4 is connected to the second phase drive circuit, the fifth capacitor is connected to the third phase drive circuit, one end of the ninth resistor R9 is connected in parallel with the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5, and the other end of the ninth resistor R9 is grounded.

[0055] In summary, the intelligent induction hair dryer provided by the present invention has the following beneficial effects:

[0056] This utility model integrates a touch-sensing module to detect handheld operation and automatically turns the heating wire on and off, improving user experience and safety. This utility model uses an optocoupler-isolated thyristor control circuit and software control with zero-crossing dropout to ensure constant power output from the heating wire, reduce electromagnetic interference, and improve the stability of the handheld hair dryer.

[0057] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An intelligent induction hair dryer, characterized in that: include: Hair duct holding assembly, hair duct outlet assembly, hair duct sensor plate, heating wire, power controller, motor control module, touch sensor module and electric heating control module; wherein, The output end of the power controller is connected to the motor control module for supplying power to the motor control module; the hair duct air outlet assembly is respectively connected to the motor control module, the heating wire and the hair duct holding assembly for controlling the start, operation and stop of the hair duct air outlet assembly through the motor control module; the hair duct sensing plate is covered on the hair duct holding assembly for obtaining touch information when the user holds the hair duct; the hair duct sensing plate is connected to the touch sensing module for transmitting the touch information obtained by the hair duct sensing plate; the touch sensing module is connected to the heating wire for controlling the operating state of the heating wire according to the user's touch information; the electric heating control module is connected to the heating wire for controlling the working power of the heating wire when it is heating.

2. The intelligent induction hair dryer according to claim 1, characterized in that: The air outlet assembly of the air duct includes: a brushless DC motor and a fan; wherein, The brushless DC motor is a three-phase brushless DC motor, which is connected to the fan and the power controller respectively, and is used to convert electrical energy into mechanical energy to drive the fan to discharge air.

3. The intelligent induction hair dryer according to claim 2, characterized in that: The motor control module includes: a first phase drive circuit, a second phase drive circuit, a third phase drive circuit, a first resistor, and a second resistor; wherein, The first-phase drive circuit is connected to the second-phase drive circuit, the first-phase drive circuit is connected to one end of the first resistor, the second-phase drive circuit is connected to one end of the second resistor, and the third-phase drive circuit is connected to the other end of the first resistor and the other end of the second resistor, and is used to monitor the current and control the drive of the brushless DC motor.

4. The intelligent induction hair dryer according to claim 1, characterized in that: The touch sensing module includes: a first inductor, a first capacitor, an electrolytic capacitor, a third resistor, a connector and a touch sensing chip; wherein, One end of the first capacitor is connected to the power controller, and the first capacitor is connected in parallel with the electrolytic capacitor and then grounded, and is used to store charge and smooth the voltage fluctuation of the power controller; One end of the first inductor is connected to the power controller for stabilizing the direct current transmitted to the touch sensing module; the other end of the first inductor is connected to one end of the touch sensing chip, and the other end of the touch sensing chip is connected to one end of the third resistor for air sensing and touch sensing of the user's holding status. The other end of the third resistor is connected to the connector, and the connector is connected to the hair dryer sensing board for receiving user touch information.

5. The intelligent induction hair dryer according to claim 1, characterized in that: The electric heating control module includes: a thyristor, a thyristor optocoupler, a fourth resistor, a fifth resistor and a sixth resistor; wherein, The thyristor optocoupler is connected to the heating wire to control the on and off of the heating wire and ensure that the heating wire operates at constant power; one end of the thyristor is connected to the power supply and is respectively connected to the fourth resistor and the fifth resistor to form a trigger circuit; the other end of the thyristor is connected to the input end of the thyristor optocoupler through the sixth resistor to send a trigger signal to the thyristor optocoupler.

6. The intelligent induction hair dryer according to claim 1, characterized in that: The intelligent induction hair dryer also includes: a temperature sensing module; wherein, The temperature sensing module is arranged inside the air outlet assembly of the duct and is connected to the electric heating control module for real-time monitoring of the temperature of the air outlet of the duct and transmitting the temperature information to the electric heating control module.

7. The intelligent induction hair dryer according to claim 6, characterized in that: The temperature sensing module includes: a second capacitor, a seventh resistor, an eighth resistor and a thermistor; wherein, One end of the second capacitor is grounded for filtering high-frequency noise in the circuit; one end of the seventh resistor is connected to one end of the eighth resistor through a common connection point, and is connected to one end of the thermistor; one end of the eighth resistor is connected in series with the thermistor, and the other end of the eighth resistor is connected to a DC power supply; the other end of the seventh resistor is connected in series with the other end of the second capacitor and then connected in parallel with the thermistor, for measuring a voltage change across the thermistor.

8. The intelligent induction hair dryer according to claim 1, characterized in that: Also includes: Physical button; wherein, the physical button is arranged on the hair dryer holding assembly and is used to adjust the working state of the hair dryer air outlet assembly.

9. The intelligent induction hair dryer according to claim 2, characterized in that: Also includes: A physical button control module; wherein the physical button control module is connected to the brushless DC motor and the heating wire respectively, and is used to adjust the working status of the brushless DC motor and the heating wire.

10. The intelligent induction hair dryer according to claim 3, characterized in that: The motor control module further includes: a ninth resistor, a third capacitor, a fourth capacitor, and a fifth capacitor; wherein, The third capacitor is connected to the first phase drive circuit, the fourth capacitor is connected to the second phase drive circuit, the fifth capacitor is connected to the third phase drive circuit, one end of the ninth resistor is connected in parallel with the third capacitor, the fourth capacitor and the fifth capacitor, and the other end of the ninth resistor is grounded.

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