Temperature control method, control device and hair dryer

Abstract

The present application discloses a temperature control method, a control device and a hair dryer, the method comprising: switching to a smart mode when detecting that a wireless communication module has been successfully paired and connected with a terminal device; receiving a target parameter from the wireless communication module when switching to the smart mode; using the target parameter as a personalized temperature control parameter corresponding to the current user; wherein the target parameter comprises a mapping strategy between a first main pressure value detected by a first main pressure sensor and heating power; the mapping strategy comprises that the heating power is proportional to the first main pressure value, or the heating power is inversely proportional to the first main pressure value; the heating power of the hair dryer is controlled based on the mapping strategy in the first main pressure value detected in real time and the target parameter to achieve temperature control. The present application can intelligently distinguish different users and provide a personalized temperature control strategy that conforms to the user's habits, while preventing the pressure value of the pressure sensor from being instantly zero when the user changes posture.

Description

Technical Field

[0001] The present invention belongs to the technical field of smart home, and in particular relates to a temperature control method, a control device and a hair dryer. Background Art

[0002] Smart home aims to enable home appliances to provide personalized control strategies that are in line with the user's usage habits for different users. It is the main direction for the home appliance industry to optimize home appliance products. Currently, home appliances such as refrigerators, air conditioners, televisions, hair dryers, etc. have been included in the smart home ecosystem. Therefore, it is necessary to incorporate hair dryers into the smart home ecosystem and provide personalized control strategies that are in line with user usage habits.

[0003] The intelligentization of hair dryers with different structures needs to conform to their structural characteristics. The prior art provides a solution for steplessly adjusting the temperature of hot air through a pressure sensor, such as a pressure-controlled hairdressing smart hair dryer disclosed in Document 1 (publication number CN104586031A). The hair dryer uses a pressure sensor to control the temperature of the hair dryer, and the user presses the pressure sensor with different forces to achieve stepless temperature adjustment. This solution is smarter than the traditional temperature control method with several fixed gears. The hair dryer provides a solution for steplessly adjusting the temperature of hot air through a pressure sensor, but different users have different habits when using the pressure sensor to control the temperature of the hair dryer. For example, some people like to keep the temperature of hot air at a low level throughout the process of blowing their hair, so they don’t want their fingers to press the pressure sensor with great force all the time. Therefore, these people obviously like the control strategy of higher pressure and higher temperature (that is, lower pressure and lower temperature). However, some people like to keep a high temperature when blowing their hair, and hope to get hot air without having to press the pressure sensor with great force. Therefore, these people prefer a control strategy in which the greater the pressure, the lower the temperature (that is, the lower the pressure, the higher the temperature). When different users use the same hair dryer, how to distinguish different users and provide personalized control strategies that suit the user's habits is a direction that needs to be optimized.

[0004] In addition, in the process of intelligent stepless temperature control based on pressure sensors, it is also found that when using pressure sensors for stepless temperature control in document 1, the following deficiencies exist: when the user's fingers press the pressure sensor in a posture for a long time during hair blowing, the fingers will feel tired, so the user needs to change the pressing posture more frequently, and each time the posture is changed, the fingers need to be released from the pressure sensor for a short time, causing the pressure value detected by the pressure sensor to be zero instantly, causing the power of the heating wire to suddenly change from a large power to zero instantly, and when the user presses the pressure sensor with his fingers again, the pressure value detected by the pressure sensor instantly increases to a large value, causing the power of the heating wire to suddenly change from zero to a large power instantly. Therefore, the user's change of posture will cause the power of the heating wire to suddenly change between zero and a large value, thereby causing the temperature of the heating wire to jump rapidly in a large range, resulting in large fluctuations in the temperature of the hot air blown out by the hair dryer. Furthermore, when the heating wire undergoes rapid and large temperature changes, thermal stress will be generated, which may cause fatigue of the heating wire material, thereby damaging the structure of the heating wire and shortening the life of the heating wire. Summary of the invention

[0005] The purpose of the present application is to solve at least one of the above problems and to provide a temperature control method, a control device and a hair dryer, which can intelligently distinguish different users and provide personalized temperature control strategies that conform to the user's habits, while avoiding the pressure value of the pressure sensor from being zero instantly when the user changes posture, thereby reducing the temperature fluctuation amplitude of the hot air blown out by the hair dryer, thereby reducing the thermal stress of the heating wire and extending the life of the heating wire.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] In a first aspect, the present application provides a temperature control method, which is applicable to a hair dryer, wherein the hair dryer includes a wireless communication module and a first pressure detection button, wherein the first pressure detection button includes a first spring and a first main pressure sensor arranged on an inner side, wherein a first end of the first spring is connected to a hair dryer body, and a second end is connected to the first main pressure sensor, and the first spring can be deformed in response to a user pressing the first pressure detection button to apply a corresponding elastic force to the first main pressure sensor;

[0008] The method comprises:

[0009] When it is detected that the wireless communication module has been successfully paired and connected with the terminal device, it switches to the smart mode;

[0010] When switching to the intelligent mode, the target parameters are received from the wireless communication module;

[0011] The target parameter is used as the personalized temperature control parameter corresponding to the current user; wherein the target parameter includes a mapping strategy between the first main pressure value detected by the first main pressure sensor and the heating power; the mapping strategy includes that the heating power is proportional to the first main pressure value, or the heating power is inversely proportional to the first main pressure value;

[0012] The heating power of the hair dryer is controlled based on the first main pressure value detected in real time and the mapping strategy in the target parameter to achieve temperature control.

[0013] In the second aspect, the present application provides a control device, which includes a main control module and an infrared temperature sensor, a first main pressure sensor, a first auxiliary pressure sensor, a motor drive module, a wireless communication module, and a bidirectional thyristor circuit, which are electrically connected to the main control module respectively; the main control module includes a memory, a processor, and a computer program stored in the memory, and the processor is used to execute the computer program to implement the steps of the above-mentioned temperature control method.

[0014] In a third aspect, the present application provides a hair dryer, comprising the above-mentioned control device.

[0015] Beneficial effects:

[0016] 1. Compared with the problem of occupying a large amount of storage capacity and computing resources of the hair dryer in the biometric identification method used in smart homes in the prior art, the temperature control method provided by the present application does not need to set up a camera or fingerprint module to obtain biometric information for identity identification. It only requires different users to connect their mobile phones to the hair dryer through a wireless communication module such as Bluetooth to complete the identity identification. It can identify the user's identity without occupying a large amount of storage capacity and computing resources of the hair dryer.

[0017] 2. After connecting to the user's mobile phone, it not only automatically completes user identity recognition but also automatically switches to smart mode, and actively transmits the personalized temperature control parameters (i.e. target parameters) corresponding to the current user to the hair dryer. The hair dryer can then automatically perform a mapping strategy between the first main pressure value and the heating power that conforms to the user's usage habits for different users based on these target parameters, thereby improving the user experience.

[0018] 3. When the user presses the first pressure detection button, the first spring is deformed, and the elastic force generated by the deformation of the first spring is applied to the first main pressure sensor to control the size of the first main pressure value detected by the first main pressure sensor to control the temperature (i.e., heating power), and the elastic force cannot change suddenly. Therefore, when the user changes posture, although the user's finger leaves the first pressure detection button for a short time, the elastic force cannot change suddenly. Therefore, the first main pressure value applied to the first main pressure sensor by the first spring will not suddenly change to zero, but will slowly decrease, thereby avoiding the problem in the prior art that the pressure value of the pressure sensor is instantly zero when the user changes posture, thereby reducing the temperature fluctuation amplitude of the hot air blown out by the hair dryer, and then reducing the thermal stress of the heating wire to extend the life of the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the technical problems solved by the present invention, the technical means adopted and the technical effects achieved more clearly, the specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be noted that the drawings described below are only drawings of exemplary embodiments of the present invention, and those skilled in the art can obtain drawings of other embodiments based on these drawings without creative work.

[0020] Figure 1 A schematic flow chart of a temperature control method provided in one embodiment of the present invention;

[0021] Figure 2 A schematic flow chart of a temperature control method provided in one embodiment of the present invention;

[0022] Figure 3 A schematic flow chart of a temperature control method provided in one embodiment of the present invention;

[0023] Figure 4 A hardware framework diagram of a control device provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the overall structure of a hair dryer provided by an embodiment of the present invention;

[0025] Figure 6 A schematic structural diagram of a first pressure detection button from one viewing angle provided by an embodiment of the present invention;

[0026] Figure 7 for Figure 6 A cross-sectional view of a first pressure detection button;

[0027] Figure 8 A structural schematic diagram of a first pressure detection button provided by an embodiment of the present invention from another perspective;

[0028] Fig. 9A cross-sectional view of a first linear motion mechanism and a first pressure detection button in a separated state in one embodiment of the present invention;

[0029] Fig.10 A cross-sectional view of an embodiment of the present invention when the first linear motion mechanism and the first pressure detection button just come into contact and enter a connection state;

[0030] Fig.11 It is a cross-sectional view of an embodiment of the present invention in which the first linear motion mechanism and the first pressure detection button are in a connected state and drive the first pressure detection button to rotate a certain angle.

[0031] Figure numerals: 10, first support panel; 101, outer side surface; 102, inner side surface; 11, first upper frame; 12, first lower frame; 13, first axial hole; 21, first auxiliary pressure sensor; 22, first main pressure sensor; 31, first spring; 32, first column; 40, coupling seat; 41, coupling groove; 50, pressure rod; 51, rod head; 60, L-shaped seat; 61, through hole; 7, cylinder; 71, air inlet; 72, air outlet; 73, infrared temperature sensor; 8, handle; 81, display screen; 82, first button; 83, second button; 84, first pressure detection button; 85, second pressure detection button. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to integrate the hair dryer into the smart home ecosystem, it is necessary to add an identity recognition function to the hair dryer so as to provide personalized services to different users in the future. However, the traditional biometric identity recognition scheme requires the hair dryer to integrate a main control module (i.e., MCU, microcontroller unit) with a larger storage capacity and more powerful computing performance. Therefore, the present application needs to provide an identity recognition scheme that does not require the integration of a main control module with a larger storage capacity and more powerful computing performance. At the same time, for the problem of rapid and large temperature fluctuations caused by the pressure value detected by the pressure sensor instantly becoming zero when the user changes posture in the scheme of controlling the temperature through a pressure sensor in Document 1, the present application also improves the structure of the pressure detection button and the control method based on the structure.

[0034] Based on this, the present application provides a temperature control method, a control device and a hair dryer, which can intelligently distinguish different users and provide personalized temperature control strategies that conform to the user's habits. At the same time, when the user changes posture, the pressure value of the pressure sensor is prevented from being zero instantly, thereby reducing the temperature fluctuation amplitude of the hot air blown out by the hair dryer, and then reducing the thermal stress of the heating wire to extend the life of the heating wire.

[0035] The following describes in detail how the present application achieves the above-mentioned invention objectives in conjunction with the accompanying drawings and specific embodiments.

[0036] Figure 5 FIG. 2 shows the overall structure of a hair dryer provided in one embodiment. Figure 5 As shown, the hair dryer includes a barrel 7 at the top and a handle 8 at the bottom, the front end of the barrel 7 is an air outlet 72, and the rear end is an air inlet 71. A blower motor and an air duct are arranged inside the barrel 7, and an electric heating wire is arranged in the air duct. The two ends of the air duct are connected to the air inlet 71 and the air outlet 72. When the blower motor rotates, the air is driven to enter the air duct from the air inlet 71, pass through the electric heating wire to heat the air, and then flow out from the air outlet 72 to form hot air for drying hair. The temperature of the hot air can be controlled by adjusting the heating power of the electric heating wire, and the wind speed can be controlled by adjusting the speed of the blower motor. The blowing mode referred to in this application is jointly determined by the speed of the blower motor of the hair dryer and the heating power of the electric heating wire. If any parameter of the speed of the blower motor of the hair dryer or the heating power of the electric heating wire changes, the state of the blowing mode changes. For the sake of simplicity, the speed of the blower motor of the hair dryer or the heating power of the electric heating wire is also expressed as the speed or heating power of the hair dryer in this application. An infrared temperature sensor 73 is arranged at the top of the front end of the barrel 7, a display screen 81 and a first button 82 and a second button 83 are arranged on the side of the handle 8 of the hair dryer, and a first pressure detection button 84 and a second pressure detection button 85 are arranged on the front of the handle 8 from top to bottom. The first pressure detection button 84 is provided with a pressure sensor, which can control the heating power of the heating wire in response to the pressure of the user, and the second pressure detection button 85 is also provided with a pressure sensor, which can control the rotation speed of the hair dryer in response to the pressure of the user.

[0037] Figure 4 FIG. 2 shows a hardware framework diagram of a control device for a hair dryer provided in an embodiment. Figure 4As shown, the control device includes a main control module (i.e., MCU) and buttons (including a first button 82 and a second button 83) electrically connected to the MCU, a display screen 81, an infrared temperature sensor 73, a first main pressure sensor 22, a second main pressure sensor, a first auxiliary pressure sensor 21, a second auxiliary pressure sensor, a Bluetooth communication module, a bidirectional thyristor circuit, and three L298N motor drive modules. Among them, the Bluetooth communication module is used to transmit data after establishing a connection with a terminal such as a mobile phone. The three L298N motor drive modules are respectively used to drive the blower motor, the first motor, and the second motor. The L298 motor drive module is controlled by the MCU, and the MCU controls the speed of the blower motor by outputting a PWM signal. The bidirectional thyristor circuit is controlled by the MCU to control the conduction and disconnection of the heating wire. The AC 220V voltage is used to power the heating wire through the bidirectional thyristor. The MCU controls the conduction time of the bidirectional thyristor in one cycle by outputting a PWM signal, thereby controlling the heating power of the heating wire, thereby realizing intelligent personalized control based on the user's historical usage habits.

[0038] Figure 6 and Figure 8 The three-dimensional structure of the first pressure detection button 84 at different angles in one embodiment is shown. Figure 7 for Figure 6 Cross-sectional view from perspective. Figure 6 , 7 8, the first pressure detection button 84 includes a first support panel 10, a first main pressure sensor 22, a first auxiliary pressure sensor 21, a first spring 31 and a first column 32; the first support panel 10 is rotatably connected to the shell of the hair dryer handle 8 through the first axial hole 13, and a first upper frame 11 matching the shape of the first auxiliary pressure sensor 21 is formed on the outer side surface 101, and the first auxiliary pressure sensor 21 is fixed in a first upper mounting groove formed by the first upper frame 11 on the outer side surface 101 of the first support panel 10, and a first upper frame 11 matching the shape of the first auxiliary pressure sensor 21 is formed on the inner side surface 102. The main pressure sensor 22 matches the first lower frame 12 in shape, and the first main pressure sensor 22 is fixed in the first lower mounting groove formed by the first lower frame 12 of the inner side 102 of the first support panel 10. The first end of the first spring 31 is fixedly connected to the outer shell of the hair dryer handle 8, and the second end of the first spring 31 is fixed on the first column 32. The first column 32 abuts against the sensing area of ​​the first main pressure sensor 22. The first spring 31 can deform in response to the user's pressing action on the first pressure detection button 84 to apply corresponding elastic force to the first main pressure sensor 22. Specifically, the first main pressure sensor 22 and the first auxiliary pressure sensor 21 are both thin film pressure sensors, and the first column 32 is a cylindrical structure made of plastic material, which is used to evenly apply the elastic force generated by the first spring 31 to the sensing area of ​​the first main pressure sensor 22.

[0039] The second pressure detection button 85 has the same structure as the first pressure detection button 84. The second pressure detection button 85 includes a second support panel, a second main pressure sensor, a second auxiliary pressure sensor, a second spring and a second column; the second support panel is rotatably connected to the housing of the hair dryer handle 8 through a second axial hole, a second upper frame matching the shape of the second auxiliary pressure sensor is formed on the outer side surface, the second auxiliary pressure sensor is fixed in a second upper mounting groove formed by the second upper frame on the outer side surface of the second support panel, a second lower frame matching the shape of the second main pressure sensor is formed on the inner side surface, the second main pressure sensor is fixed in a second lower mounting groove formed by the second lower frame on the inner side surface of the second support panel, the first end of the second spring is fixedly connected to the housing of the hair dryer handle 8, the second end of the second spring is fixed on the second column, the second column abuts against the sensing area of ​​the second main pressure sensor, and the second spring can deform in response to the user's pressing action on the second pressure detection button 85 to apply corresponding elastic force to the second main pressure sensor. Specifically, the second main pressure sensor and the second auxiliary pressure sensor are both thin film pressure sensors, and the second column is a cylindrical structure made of plastic material, which is used to evenly apply the elastic force generated by the second spring to the sensing area of ​​the second main pressure sensor.

[0040] Fig. 9 , Fig.10 and Fig.11 The figure shows the connection relationship between the pressure rod 50 and the first pressure detection button 84 in the linear motion mechanism of an embodiment. Specifically, in some embodiments, the hair dryer also includes a first linear motion mechanism driven by a first motor and a second linear motion mechanism driven by a second motor. Specifically, the first linear motion mechanism includes a first driving part, a first transmission part and a first execution part, the first driving part is the first motor, the first execution part is the pressure rod 50, and the first transmission part is a reducer and a linear actuator. Specifically, the reducer can be composed of a plurality of meshing gears, and the linear brake can adopt a screw pair or a gear rack to convert the rotation of the first motor into linear motion. The pressure rod 50 is fixedly connected to the screw nut or the rack for linear motion, so as to realize the linear motion of the pressure rod 50. As shown in FIG. Fig. 9As shown, an L-shaped seat 60 is fixedly connected to one end of the inner side surface 102 of the first supporting panel 10 away from the first axial hole 13. The L-shaped seat 60 includes a vertical portion and a horizontal portion. The vertical portion is perpendicular to the first supporting panel 10 and the upper end of the vertical portion is connected to the inner side surface 102 of the first supporting panel 10, and the lower end is connected to the horizontal portion. The horizontal portion is parallel to the first supporting panel 10, and the horizontal portion is provided with a through hole 61. A coupling seat 40 fixedly connected to the horizontal portion is provided below the through hole 61. A coupling groove 41 is provided on the surface of the coupling seat 40 in contact with the horizontal portion. The position of the opening of the coupling groove 41 is opposite to the through hole 61, so that the rod head 51 of the pressure rod 50 can pass through the through hole 61 in sequence when performing a linear motion from the outside to the inside and enter the coupling groove 41, and finally the rod head 51 abuts against the bottom of the coupling groove 41 (as shown in FIG. Fig.10 As shown in the state, when the pressure rod 50 continues to move inward, it will drive the first pressure detection button 84 to rotate inward (as shown in the state shown in the Fig.11 ), and because the rod head 51 abuts against the bottom of the coupling groove 41, the first pressure detection button 84 cannot rotate to the outside of the housing. In summary, the first linear motion mechanism can make linear motion in a direction perpendicular to the housing surface of the hair dryer handle 8, and connect or separate with the first pressure detection button 84 when making linear motion. When the first linear motion mechanism is connected to the first pressure detection button 84, it can drive the first support panel 10 of the first pressure detection button 84 to rotate to the inside of the housing of the hair dryer handle 8 and limit the first support panel 10 of the first pressure detection button 84 from rotating to the outside of the housing of the hair dryer handle 8.

[0041] In the first pressure detection button 84, the rod head 51 of the pressure rod 50 is a curved surface, and the bottom of the coupling groove 41 is also a curved surface, and the curvature of the two curved surfaces is the same, so that the rod head 51 of the pressure rod 50 can fit tightly with the bottom of the coupling groove 41, so that the position where the rod head 51 contacts the bottom of the coupling groove 41 each time is consistent, thereby ensuring that the number of steps required for the rod head 51 to reach the bottom of the coupling groove 41 from the starting position driven by the first motor each time is the same. In addition, the inner side wall of the coupling groove 41 surrounds an inverted cone-shaped space, and the inverted cone-shaped space gradually widens from the bottom of the coupling groove 41 to the opening of the coupling groove 41, so that when the first support panel 10 rotates around the first rotating shaft passing through the first shaft hole 13, the inner side wall of the coupling groove 41 will not hinder the pressure rod 50, so that the rod head 51 can still be close to the bottom of the coupling groove 41, ensuring that the number of steps required for the rod head 51 to reach the bottom of the coupling groove 41 from the starting position driven by the first motor each time is the same. Specifically, the hole diameter on one side where the through hole 61 contacts the opening of the coupling slot 41 is the same as the diameter of the opening of the coupling slot 41, and the hole diameter on the other side is larger than the diameter of the opening of the coupling slot 41. Preferably, the inclination degree of the inner wall of the through hole 61 is the same as the inclination degree of the inner wall of the coupling slot 41.

[0042] The second linear motion mechanism has the same structure as the first linear motion mechanism. Specifically, the second linear motion mechanism includes a second driving part, a second transmission part and a second execution part, the second driving part is a second motor, the second execution part is a pressure rod, and the second transmission part is a reducer and a linear actuator. Specifically, the reducer can be composed of a number of meshing gears, and the linear brake can use a screw pair or a gear rack to convert the rotation of the second motor into linear motion. The pressure rod is fixedly connected to the screw nut or rack for linear motion, thereby realizing the linear motion of the pressure rod. An L-shaped seat is fixedly connected to one end of the inner side surface of the second supporting panel away from the second axial hole, and the L-shaped seat includes a vertical portion and a horizontal portion, the vertical portion is perpendicular to the second supporting panel and the upper end of the vertical portion is connected to the inner side surface of the second supporting panel, and the lower end is connected to the horizontal portion, the horizontal portion is parallel to the second supporting panel, and the horizontal portion is provided with a through hole, and a coupling seat fixedly connected to the horizontal portion is provided below the through hole, and a coupling groove is provided on the contact surface of the coupling seat and the horizontal portion, and the position of the coupling groove opening is opposite to the through hole, so that the rod head part of the pressure rod can pass through the through hole and enter the coupling groove in sequence when making a linear motion from the outside to the inside, and finally make the rod head abut against the bottom of the coupling groove, and when the pressure rod continues to move inward, it will drive the second pressure detection button 85 to rotate inward, and because the rod head abuts against the bottom of the coupling groove, the second pressure detection button 85 cannot rotate to the outside of the shell. In summary, the second linear motion mechanism can make linear motion in a direction perpendicular to the outer shell surface of the hair dryer handle 8, and connect or separate with the second pressure detection button 85 when making linear motion. When the second linear motion mechanism is connected to the second pressure detection button 85, it can drive the second support panel of the second pressure detection button 85 to rotate toward the inside of the outer shell of the hair dryer handle 8 and limit the second support panel of the second pressure detection button 85 from rotating toward the outside of the outer shell of the hair dryer handle 8.

[0043] In the second pressure detection button 85, the rod head 51 of the pressure rod 50 is a curved surface, and the bottom of the coupling groove 41 is also a curved surface, and the curvature of the two curved surfaces is the same, so that the rod head 51 of the pressure rod 50 can fit tightly with the bottom of the coupling groove 41, so that the position where the rod head 51 contacts the bottom of the coupling groove 41 each time is consistent, thereby ensuring that the number of steps required for the rod head 51 to reach the bottom of the coupling groove 41 from the starting position driven by the second motor each time is the same. In addition, the inner side wall of the coupling groove 41 surrounds an inverted conical space, and the inverted conical space gradually widens from the bottom of the coupling groove 41 to the opening of the coupling groove 41, so that when the second support panel rotates around the second rotating shaft passing through the second shaft hole, the inner side wall of the coupling groove 41 will not hinder the pressure rod 50, so that the rod head 51 can still be close to the bottom of the coupling groove 41, ensuring that the number of steps required for the rod head 51 to reach the bottom of the coupling groove 41 from the starting position driven by the second motor each time is the same. Specifically, the hole diameter on one side where the through hole 61 contacts the opening of the coupling slot 41 is the same as the diameter of the opening of the coupling slot 41, and the hole diameter on the other side is larger than the diameter of the opening of the coupling slot 41. Preferably, the inclination degree of the inner wall of the through hole 61 is the same as the inclination degree of the inner wall of the coupling slot 41.

[0044] The temperature control method provided in the following embodiments is applied to the hair dryer and the control device provided in the above embodiments to realize intelligent control of temperature.

[0045] Specifically, Figure 1 As shown, in one embodiment, a temperature control method is provided, the method comprising:

[0046] Step S202, when it is detected that the wireless communication module has been successfully paired and connected with the terminal device, switching to the smart mode.

[0047] When the Bluetooth communication module of the hair dryer is not connected to the mobile phone, it is in manual mode, and the user manually controls the speed and heating power of the hair drying process. When the Bluetooth communication module of the hair dryer is connected to the mobile phone, it is in smart mode, and the hair drying process is intelligently controlled according to the target parameters received from the Bluetooth module.

[0048] Step S204, when switching to the smart mode, receiving target parameters from the wireless communication module.

[0049] Step S206, using the target parameter as the personalized temperature control parameter corresponding to the current user. The target parameter includes a mapping strategy between the first main pressure value detected by the first main pressure sensor 22 and the heating power; the mapping strategy includes that the heating power is proportional to the first main pressure value, or that the heating power is inversely proportional to the first main pressure value.

[0050] Different users have different personalized temperature control parameters. For example, some people like to keep the temperature of hot air at a low level throughout the process of blowing their hair, so they don’t want their fingers to press the pressure sensor with great force all the time. Therefore, these people obviously prefer a control strategy where the greater the pressure, the higher the temperature (i.e., the lower the pressure, the lower the temperature). Some people like to keep the temperature at a high level throughout the process of blowing their hair, and hope that they can get hot air without having to press the pressure sensor with great force. Therefore, these people prefer a control strategy where the greater the pressure, the lower the temperature (i.e., the lower the pressure, the higher the temperature). It can be seen that due to the different needs of different users, it is necessary to identify users and match personalized temperature control parameters that meet their usage habits for different users.

[0051] After the user selects a mapping strategy through the mobile phone app once, if there is no subsequent modification, the last selected mapping strategy will be used to respond to the first main pressure value detected by the first main pressure sensor 22 to control the heating power. In this step, the main control module will load the received target parameters into the memory, and after the loading is completed, the heating power will be controlled according to the mapping strategy in the target parameters.

[0052] Step S208, controlling the heating power of the hair dryer based on the first main pressure value detected in real time and the mapping strategy in the target parameter to achieve temperature control.

[0053] In one example, the loaded mapping strategy is that the heating power is proportional to the first main pressure value, and the greater the force the user actually applies on the first pressure detection button 84, the higher the heating power.

[0054] In this embodiment, compared with the problem of occupying a large amount of storage capacity and computing resources of the hair dryer in the biometric identification method used in the prior art smart home, the temperature control method provided by this application does not need to set up a camera or fingerprint module to obtain biometric information for identity identification. It only requires different users to connect their mobile phones to the hair dryer through wireless communication modules such as Bluetooth to complete identity identification, and can identify the user's identity without occupying a large amount of storage capacity and computing resources of the hair dryer. After connecting to the user's mobile phone, it not only automatically completes the user's identity identification but also automatically switches to the smart mode, and actively transmits the personalized temperature control parameters (i.e., target parameters) corresponding to the current user to the hair dryer. The hair dryer can then automatically perform a mapping strategy between the first main pressure value and the heating power that conforms to the user's usage habits for different users based on these target parameters, thereby improving the user experience. When the user presses the first pressure detection button 84, the first spring 31 is deformed, and the elastic force generated by the deformation of the first spring 31 is applied to the first main pressure sensor 22 to control the size of the first main pressure value detected by the first main pressure sensor 22 to control the temperature (i.e., heating power), and the elastic force cannot change suddenly. Therefore, when the user changes posture, although the user's finger leaves the first pressure detection button 84 for a short time, the elastic force cannot change suddenly. Therefore, the first main pressure value applied to the first main pressure sensor 22 by the first spring 31 will not suddenly change to zero, but will slowly decrease, thereby avoiding the problem in the prior art that the pressure value of the pressure sensor is instantly zero when the user changes posture, thereby reducing the temperature fluctuation amplitude of the hot air blown out by the hair dryer, and then reducing the thermal stress of the heating wire to extend the life of the heating wire.

[0055] like Figure 2 As shown, in one embodiment, the method further includes:

[0056] Step S302 , when it is detected that the pressure values ​​output by the first auxiliary pressure sensor 21 are consistent with those output by the first main pressure sensor 22 , the heating power of the hair dryer is controlled based on the first main pressure value output by the first main pressure sensor 22 or the first auxiliary pressure value output by the first auxiliary pressure sensor 21 .

[0057] Specifically, since the first auxiliary pressure sensor 21 and the first main pressure sensor 22 are both arranged on the first support panel 10, when the user presses the first pressure detection button 84 to make it in a balanced state, the first support panel 10 is kept balanced by the finger pressing force applied to the outer surface 101 and the elastic force of the first spring 31 applied to the inner surface 102. Therefore, the values ​​of the first auxiliary pressure sensor 21 and the first main pressure sensor 22 are equal. At this time, regardless of whether the heating power of the hair dryer is controlled based on the first main pressure value output by the first main pressure sensor 22 or the first auxiliary pressure value output by the first auxiliary pressure sensor 21, the result is the same.

[0058] Step S304 , when it is detected that the pressure values ​​output by the first auxiliary pressure sensor 21 are inconsistent with the first main pressure sensor 22 and the pressure value output by the first auxiliary pressure sensor 21 is not zero, the heating power of the hair dryer is controlled based on the first auxiliary pressure value output by the first auxiliary pressure sensor 21 .

[0059] Specifically, when it is detected that the pressure values ​​output by the first auxiliary pressure sensor 21 are inconsistent with those of the first main pressure sensor 22 and the pressure value output by the first auxiliary pressure sensor 21 is not zero, it means that the user's finger is still pressing on the outer side 101 of the first support panel 10, but the force of the finger pressing is not equal to the elastic force of the first spring 31. At this time, the first support panel 10 is in an unbalanced state.

[0060] When the first support panel 10 is in an unbalanced state, it indicates that the user intends to adjust the first pressure detection button 84. Since the first main pressure sensor 22 is only subjected to the elastic force of the first spring 31, and the elastic force has the characteristic of not being able to change suddenly, there will be a certain response delay in adjusting the heating power by relying on the first main pressure value detected by the first main pressure sensor 22. However, the first auxiliary pressure sensor 21 does not have this delay and can quickly respond to the pressing or releasing action of the user's finger and output the corresponding first auxiliary pressure value. Therefore, in this embodiment, when it is determined that the first support panel 10 is in an unbalanced state, the user's intention to adjust is obtained without response through the first auxiliary pressure sensor 21, that is, the heating power of the hair dryer is controlled based on the first auxiliary pressure value output by the first auxiliary pressure sensor 21, which can greatly improve the speed at which the hair dryer responds to the user's adjustment of the heating power.

[0061] Step S306 , when it is detected that the pressure values ​​output by the first auxiliary pressure sensor 21 are inconsistent with the first main pressure sensor 22 and the pressure value output by the first auxiliary pressure sensor 21 is zero, the heating power of the hair dryer is controlled based on the first main pressure value output by the first main pressure sensor 22 .

[0062] In this step, the first support panel 10 is in an unbalanced state, and the pressure value output by the first auxiliary pressure sensor 21 is zero, indicating that the user has taken his finger off the first pressure detection button 84. At this time, the user may need to change the posture of pressing the first pressure detection button 84, or the user may not need to blow hot air. At this time, the heating power of the hair dryer is controlled based on the first main pressure value output by the first main pressure sensor 22, and the first main pressure sensor 22 is subjected to the elastic force of the first spring 31 and cannot change suddenly, so the heating power is slowly reduced. If the user really changes the posture, he will soon press the first pressure detection button 84 again. Through the control method of step S306, the temperature of the heating wire will not fluctuate greatly every time the posture is changed, reducing thermal stress and extending the life. If the user does not need hot air, the subsequent user will not continue to press the first pressure detection button 84. After a period of time, the first spring 31 returns to a relaxed state, and there is no deformation. The elastic force applied by the first spring 31 to the first main pressure sensor 22 is zero, and the heating power is slowly reduced to zero.

[0063] In order to facilitate understanding of the following steps A1 to A4, the relationship between the number of steps of the first motor in the first linear motion mechanism and the first main pressure sensor 22 of the first pressure detection button 84 is first described. Fig. 9 As shown, at this time, the first linear motion mechanism is at the starting position, that is, the pressure rod 50 is at the starting position, at this time, the pressure rod 50 and the first support panel 10 are in a separated state, and at this time, the number of steps of the first motor is zero. When the pressure rod 50 is at the starting position, the first motor starts to rotate forward and reaches Fig.10 The connecting state is shown, and then the rotation continues. When the rotation reaches the first step, the driving rod 50 moves from the outside to the inside along the axial direction of the rod 50 to reach Fig.11 The first position shown. Fig.11As shown, the state of the first pressure detection button 84 at this time causes the first spring 31 to be compressed and deformed, so the first main pressure sensor 22 abutting against the first column 32 is subjected to the elastic force applied by the first spring 31, and the first main pressure value can be detected by the first main pressure sensor 22. It can be understood that, since the elastic force applied by the spring is proportional to the deformation amount, when the pressure rod 50 is at the starting position, if the user presses the first pressure detection button 84 to this state, the first main pressure value detected by the first main pressure sensor 22 is equal to the first main pressure value detected by the first main pressure sensor 22 when the first motor drives the first linear motion mechanism to rotate the first step from the starting position. In other words, a mapping relationship B1=F(P1) between the first main pressure value P1 and the first step number B1 can be established and recorded in the target parameters. According to the mapping relationship B1=F(P1) between the first main pressure value P1 and the first step number B1, the first linear motion mechanism can be located in the starting position without the user pressing the first pressure detection button 84. Then, by only controlling the first motor to rotate corresponding to the first step number B1, the first pressure detection button 84 can be pressed by the pressure rod 50 to reach the state of being pressed by the user by hand, that is, the elastic force applied by the spring to the first main pressure sensor 22 in the two methods is consistent.

[0064] Based on the above embodiment, in this embodiment, the method further includes:

[0065] Step A1, when a temperature locking signal is detected, the current first main pressure value is used as a reference main pressure value.

[0066] In one example, when the user feels that the current temperature is most suitable while pressing the first pressure detection button 84 to adjust the heating power, the user inputs a temperature lock signal to the main control module by pressing and holding the first button 82 on the handle 8 for more than 2 seconds. When the main control module receives the temperature lock signal, it obtains the current first main pressure value P' from the first main pressure sensor 22, and uses the current first main pressure value P' as a reference main pressure value.

[0067] Step A2: input the reference main pressure value into the pre-established mapping relationship between the pressure value and the number of steps to determine the target number of steps corresponding to the reference main pressure value.

[0068] Specifically, the pre-established mapping relationship between the pressure value and the number of steps is actually the mapping relationship between the first main pressure value P1 and the first step number B1, B1=F(P1). Therefore, the reference main pressure value P' is substituted into the mapping relationship to obtain the target number of steps corresponding to the reference main pressure value P', which is B'=F(P').

[0069] Step A3, calculating the difference between the target number of steps and the current number of steps of the first motor.

[0070] In one example, the state of the first pressure detection button 84 is as follows: Fig. 9 As shown, the first linear motion mechanism is currently located at the starting position, and the current step number of the first motor is 0. The difference between the target step number B' and the current step number of the first motor is B'.

[0071] Step A4, controlling the first motor to rotate according to the difference in the number of steps.

[0072] After determining that the difference is B', B' is greater than 0, the first motor is controlled to rotate forward B' steps. After the user controls the first motor to rotate forward B' steps, the pressure rod 50 moves from the starting position to the coupling groove 41 and abuts against the coupling groove 41. The pressure rod 50 continues to move axially to apply pressure to the first support panel 10, causing the first spring 31 to deform. Finally, when the step number B' is reached, the pressure rod 50 stops moving. The first pressure detection button 84 is limited to maintain the first main pressure value detected by the first main pressure sensor 22 as the reference main pressure value P'. It should be noted that if it is determined that the difference is B', B' is less than 0, the first motor is controlled to rotate in the opposite direction B' steps.

[0073] Through steps A1 to A4, the first linear motion mechanism and the first spring 31 can work together to fix the first pressure detection button 84 at a position where the first main pressure value is equal to the reference main pressure value P', eliminating the need for the user to continuously hold the position of the first pressure detection button 84 with their hands, thereby optimizing the user experience.

[0074] In one embodiment, the hair dryer further comprises an infrared temperature sensor 73 for measuring the temperature of the hair, and the method further comprises:

[0075] When the temperature value detected by the infrared temperature measuring sensor 73 is greater than the high temperature threshold, a high temperature warning signal is issued.

[0076] Specifically, the high temperature threshold is also data received from the mobile phone through the Bluetooth communication module, and is data set by the user on the mobile phone app. The high temperature warning signal can be an alarm sound signal emitted by the buzzer of the hair dryer, or it can be a light emitted by the warning light of the hair dryer. By providing a high temperature warning, the risk of burns to the user can be reduced.

[0077] In one embodiment, the hair dryer is provided with a second pressure detection button 85, and the method further comprises:

[0078] The rotation speed of the hair dryer is adjusted in real time in response to the second main pressure value detected by the second main pressure sensor.

[0079] The wind speed of the hair dryer can be adjusted steplessly by the second pressure detection button 85 .

[0080] Specifically, a mapping relationship between the second pressure data and the rotational speed can be established. For example, the rotational speed is directly proportional or inversely proportional to the second main pressure value. By establishing the above mapping relationship, the user can adjust the rotational speed by changing the force of pressing the second pressure detection button 85 or the position of the button rotating around the axis.

[0081] In one embodiment, the method further comprises:

[0082] Step C1, obtaining a dual-button direction setting signal received from a wireless communication module. The dual-button direction setting signal carries one of the first mapping strategy, the second mapping strategy, the third mapping strategy and the fourth mapping strategy;

[0083] Step C2: when a two-button direction setting signal is detected, the rotation speed and heating power of the hair dryer are adjusted based on the strategy data carried in the two-button direction setting signal.

[0084] Among them, the first mapping strategy: the first main pressure value is proportional to the heating power, and the second main pressure value is proportional to the rotational speed; the second mapping strategy: the first main pressure value is proportional to the heating power, and the second main pressure value is inversely proportional to the rotational speed; the third mapping strategy: the first main pressure value is inversely proportional to the heating power, and the second main pressure value is proportional to the rotational speed; the fourth mapping strategy: the first main pressure value is inversely proportional to the heating power, and the second main pressure value is inversely proportional to the rotational speed.

[0085] Specifically, the user can send a dual-button direction setting signal to the main control module through the mobile phone app. For example, in one example, the dual-button direction setting signal carries the first mapping strategy: the first main pressure value is proportional to the heating power, and the second main pressure value is proportional to the rotation speed. That is, the harder the user presses the first pressure detection button 84, the higher the heating power; the harder the user presses the second pressure detection button, the higher the rotation speed. Through steps C1 to C2, users can flexibly set the control strategy of the two buttons, providing more flexibility.

[0086] In one embodiment, a process for recommending policy data that should be carried in the double-button direction setting signal based on the user's historical usage habits is also provided:

[0087] According to the historical usage data of the user, the changing trend of the heating power and the changing trend of the rotation speed during the hair drying process of the user are analyzed;

[0088] If the heating power and the rotation speed both show an increasing or decreasing trend during the hair drying process, it is recommended that the user select the first mapping strategy or the fourth mapping strategy;

[0089] If the heating power and the rotation speed change in opposite trends during the user's hair drying process, one is increasing and the other is decreasing, it is recommended that the user select the second mapping strategy or the third mapping strategy;

[0090] If the heating power and the rotation speed do not increase or decrease during the process of the user blowing his hair, a default mapping strategy is selected, for example, the default mapping strategy may be the first mapping strategy.

[0091] The strategy data recommended by the above process allows the user to blow-dry their hair according to their own habits. From the beginning to the end of blowing their hair, the first pressure detection button 84 and the second pressure detection button 85 can maintain the same direction of force output, which is in line with the human body's force output habits and is easy to use.

[0092] like Figure 3 As shown, in one embodiment, the method further includes:

[0093] Step S402: When an automatic temperature control signal is received from the wireless communication module, the automatic temperature control mode is entered. The automatic temperature control signal carries an automatic temperature control mapping relationship between hair temperature and heating power.

[0094] Step S404, in the automatic temperature control mode, in response to the hair temperature detected by the infrared temperature sensor 73, the heating power of the hair dryer is adjusted according to the automatic temperature control mapping relationship.

[0095] Specifically, the user sends an automatic temperature control signal to the main control module through the mobile phone app. When the main control module receives the automatic temperature control signal from the wireless communication module, it enters the automatic temperature control mode. The automatic temperature control signal carries the automatic temperature control mapping relationship between the hair temperature and the heating power. The automatic temperature control mapping relationship is Q=G(T), where T is the hair temperature T detected by the infrared temperature sensor 73, and Q is the corresponding heating power. The automatic temperature control mapping relationship can be a relationship formed by collecting the user's historical hair blowing process, or it can be a relationship provided by an expert.

[0096] In this embodiment, the hair dryer can automatically control the heating power according to the temperature of the hair during the hair blowing process, thereby realizing intelligent hair blowing. In addition, if the automatic temperature control mapping relationship is a relationship formed by collecting the user's historical hair blowing process, the solution can also provide an automatic control solution that conforms to the user's usage habits.

[0097] In one embodiment, in the automatic temperature control mode, the method further includes:

[0098] Step D1, determining a reference main pressure value corresponding to the current heating power according to a mapping strategy.

[0099] Taking the mapping strategy that the heating power is proportional to the first main pressure value as an example, the mapping relationship is Q2=f(P2), Q2 is the current heating power, and P2 is the first main pressure value, that is, the reference pressure value.

[0100] Step D2, inputting the reference main pressure value into the pre-established mapping relationship between the pressure value and the number of steps, and determining the target number of steps corresponding to the reference main pressure value.

[0101] It is known that the mapping relationship between the pressure value and the number of steps established in advance is B2=F(P2), and the target number of steps corresponding to the reference main pressure value P2 is determined to be B2.

[0102] Step D3, calculating the difference between the target number of steps and the number of steps of the first motor at the previous moment.

[0103] Assuming that the number of steps of the first motor at the last moment is 0, that is, the first linear motion mechanism is at the starting position, the difference is B2.

[0104] Step D4, controlling the first motor to rotate according to the difference in the number of steps.

[0105] After determining that the difference is B2, B2 is greater than 0, and the first motor is controlled to rotate forward B2 steps. After the user controls the first motor to rotate forward B2 steps, the pressure rod 50 moves from the starting position to the coupling groove 41 and abuts against the coupling groove 41. The pressure rod 50 continues to move axially to apply pressure to the first support panel 10, so that the first spring 31 is deformed, and finally stops when the step number B2 is reached. The pressure rod 50 limits the first pressure detection button 84 to keep the first main pressure value detected by the first main pressure sensor 22 as the reference main pressure value P2. Therefore, although it is in the automatic temperature control mode, there is no need for the user to press the first pressure detection button 84 to control the pressure value, but in this embodiment, the first pressure detection button 84 is still adjusted to a position where the first main pressure value detected by the first main pressure sensor 22 is the reference main pressure value P2. Therefore, if the user needs to press the first pressure detection button 84 to adjust the heating power in the automatic temperature control mode, the hand feel is consistent with the user pressing the first pressure detection button 84 by hand to reach the position where the first main pressure value is P2. It should be noted that, if after determining that the difference is B2, B2 is less than 0, the first motor is controlled to rotate in the reverse direction by B2 steps.

[0106] Step D5, when it is detected that the first auxiliary pressure value output by the first auxiliary sensor is non-zero, the first motor is controlled to return to the starting position and exit the automatic temperature control mode.

[0107] Specifically, if the user presses the first pressure detection button 84 in the automatic temperature control mode, it can be recognized that the user wants to exit the automatic temperature control mode, which is convenient to operate. And because the hand feeling at this time is consistent with the position where the user presses the first pressure detection button 84 to reach the first main pressure value P2, the user's experience is improved, and it is convenient for the user to adjust the heating power according to the strength in the past experience.

[0108] In some embodiments, a control device is also provided, which includes a main control module and an infrared temperature sensor 73, a first main pressure sensor 22, a first auxiliary pressure sensor 21, a motor drive module, a wireless communication module, and a bidirectional thyristor circuit electrically connected to the main control module respectively; the main control module includes a memory, a processor, and a computer program stored in the memory, and the processor is used to execute the computer program to implement the steps of the above-mentioned temperature control method.

[0109] In some embodiments, a hair dryer is also provided, which includes the above-mentioned control device.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A temperature control method, applicable to a hair dryer, characterized in that: The hair dryer includes a wireless communication module and a first pressure detection button, the first pressure detection button includes a first spring and a first main pressure sensor arranged on an inner side, a first end of the first spring is connected to the hair dryer body, and a second end is connected to the first main pressure sensor, and the first spring can be deformed in response to a user pressing the first pressure detection button to apply a corresponding elastic force to the first main pressure sensor; The method comprises: When it is detected that the wireless communication module has been successfully paired and connected with the terminal device, it switches to the smart mode; When switching to the intelligent mode, the target parameters are received from the wireless communication module; The target parameter is used as the personalized temperature control parameter corresponding to the current user; wherein the target parameter includes a mapping strategy between the first main pressure value detected by the first main pressure sensor and the heating power; the mapping strategy includes that the heating power is proportional to the first main pressure value, or the heating power is inversely proportional to the first main pressure value; The heating power of the hair dryer is controlled based on the first main pressure value detected in real time and the mapping strategy in the target parameter to achieve temperature control.

2. A temperature control method according to claim 1, characterized in that: The first pressure detection button also includes a first auxiliary pressure sensor disposed on the outer side; The method further comprises: When it is detected that the pressure values ​​output by the first auxiliary pressure sensor are consistent with the pressure values ​​output by the first main pressure sensor, the heating power of the hair dryer is controlled based on the first main pressure value output by the first main pressure sensor or the first auxiliary pressure value output by the first auxiliary pressure sensor; When it is detected that the pressure values ​​output by the first auxiliary pressure sensor are inconsistent with the pressure value output by the first main pressure sensor and the pressure value output by the first auxiliary pressure sensor is not zero, controlling the heating power of the hair dryer based on the first auxiliary pressure value output by the first auxiliary pressure sensor; When it is detected that the pressure values ​​output by the first auxiliary pressure sensor are inconsistent with the first main pressure sensor and the pressure value output by the first auxiliary pressure sensor is zero, the heating power of the hair dryer is controlled based on the first main pressure value output by the first main pressure sensor.

3. A temperature control method according to claim 2, characterized in that: The first pressure detection button is rotatably connected to the housing of the hair dryer handle, and the hair dryer further comprises a first linear motion mechanism driven by a first motor, the first linear motion mechanism can perform linear motion in a direction perpendicular to the housing surface of the hair dryer handle, and is connected to or separated from the first pressure detection button when performing linear motion, and when the first linear motion mechanism is connected to the first pressure detection button, it can drive the first pressure detection button to rotate toward the inside of the housing of the hair dryer handle and restrict the first pressure detection button from rotating toward the outside of the housing of the hair dryer handle; The method further comprises: When the temperature lock signal is detected, the current first main pressure value is used as the reference main pressure value; Inputting the reference main pressure value into the pre-established mapping relationship between the pressure value and the number of steps to determine the target number of steps corresponding to the reference main pressure value; Calculate the difference between the target number of steps and the current number of steps of the first motor; The first motor is controlled to rotate according to the difference in the number of steps.

4. A temperature control method according to claim 3, characterized in that: The hair dryer also includes an infrared temperature sensor for measuring the temperature of the hair, and the method further includes: When the temperature value detected by the infrared temperature sensor is greater than the high temperature threshold, a high temperature warning signal is issued.

5. A temperature control method according to claim 2, characterized in that: The hair dryer further includes a second pressure detection button, the second pressure detection button includes a second spring and a second main pressure sensor arranged on an inner side, a first end of the second spring is connected to the hair dryer body, and a second end is connected to the second main pressure sensor, and the second spring can be deformed in response to a user pressing the second pressure detection button to apply a corresponding elastic force to the second main pressure sensor; The method further comprises: The rotation speed of the hair dryer is adjusted in real time in response to the second main pressure value detected by the second main pressure sensor.

6. A temperature control method according to claim 5, characterized in that: The method further comprises: Acquire a dual-button direction setting signal received from the wireless communication module; the dual-button direction setting signal carries one of the first mapping strategy, the second mapping strategy, the third mapping strategy and the fourth mapping strategy; When a two-button direction setting signal is detected, the speed and heating power of the hair dryer are adjusted based on the strategy data carried in the two-button direction setting signal; Among them, the first mapping strategy: the first main pressure value is proportional to the heating power, and the second main pressure value is proportional to the rotational speed; the second mapping strategy: the first main pressure value is proportional to the heating power, and the second main pressure value is inversely proportional to the rotational speed; the third mapping strategy: the first main pressure value is inversely proportional to the heating power, and the second main pressure value is proportional to the rotational speed; the fourth mapping strategy: the first main pressure value is inversely proportional to the heating power, and the second main pressure value is inversely proportional to the rotational speed.

7. A temperature control method according to claim 4, characterized in that: The method further comprises: When receiving an automatic temperature control signal from the wireless communication module, the automatic temperature control mode is entered; the automatic temperature control signal carries an automatic temperature control mapping relationship between hair temperature and heating power; In the automatic temperature control mode, in response to the hair temperature detected by the infrared temperature sensor, the heating power of the hair dryer is adjusted according to the automatic temperature control mapping relationship.

8. A temperature control method according to claim 7, characterized in that: In the automatic temperature control mode, the method further includes: Determine the reference main pressure value corresponding to the current heating power according to the mapping strategy; Inputting the reference main pressure value into the pre-established mapping relationship between the pressure value and the number of steps to determine the target number of steps corresponding to the reference main pressure value; Calculating the difference between the target number of steps and the current number of steps of the first motor; Controlling the first motor to rotate according to the difference in the number of steps; When it is detected that the first auxiliary pressure value output by the first auxiliary sensor is non-zero, the first motor is controlled to return to the starting position and exit the automatic temperature control mode.

9. A control device, characterized in that: The control device includes a main control module and an infrared temperature sensor, a first main pressure sensor, a first auxiliary pressure sensor, a motor drive module, a wireless communication module, and a bidirectional thyristor circuit, which are electrically connected to the main control module respectively; the main control module includes a memory, a processor, and a computer program stored in the memory, and the processor is used to execute the computer program to implement the steps of the temperature control method described in any one of claims 1 to 8.

10. A hair dryer, characterized in that: The hair dryer comprises the control device of claim 9.

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