A temperature control method for hair straightening plates

Abstract

The present application provides a temperature control method for a hair straightening plate, the hair straightening plate includes a main control module, a first sampling module, a second sampling module, a first heating element, and a second heating element, and the temperature control method includes the following steps: Step 1: the first sampling module at least monitors the first temperature parameter of the first heating element and feeds back to the main control module, and the second sampling module at least monitors the second temperature parameter of the second heating element and feeds back to the main control module; Step 2: the main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter. In this way, the problem that the hair straightening plate is easily burned due to excessive temperature when in use is solved.

Description

Technical Field

[0001] The invention relates to the technical field of hair straightening plates, and in particular to a temperature control method for hair straightening plates. Background Art

[0002] The hair straightening clamp has two heating arms, which usually clamp the hair to heat it. Therefore, the temperature control system of the two heating arms of the hair straightening clamp is unified, that is, they heat and stop at the same time. However, in actual use, a single arm often overheats. For example, a heating arm is used to press, heat and pull the hair in a straightened state, or to make the ointment used for straightening hair more evenly applied to the hair and prevent the ointment from being too much wrapped and adhering to the hair straightening clamp, a single arm is also needed to press and straighten the hair. At this time, due to the effect of the ointment, the temperature of the clamping arm in contact with the hair is reduced a lot, and the temperature of the other clamping arm will be significantly higher than the clamping arm in contact with the hair. At this time, the hair straightening clamp detects that the temperature of the clamp is lower than the set temperature, and it will start heating. At this time, the temperature of the clamping arm that is not in contact with the hair is significantly higher than the monitored temperature. At this time, heating will cause the temperature of the clamping arm that is not in contact with the hair to be too high, which is easy to cause damage, and even easy to cause accidents due to high temperature. Therefore, the existing technology needs to be further improved. Summary of the invention

[0003] The main purpose of the present invention is to provide a temperature control method for a hair straightening plate, aiming to solve the problem that the hair straightening plate is easily burned due to excessive temperature during use.

[0004] To achieve the above-mentioned purpose, the present invention proposes a temperature control method for a hair straightening plate, which includes a main control module, a first sampling module, a second sampling module, a first heating element and a second heating element. The temperature control method includes the following steps: Step 1: The first sampling module at least monitors the first temperature parameter of the first heating element and feeds back to the main control module, and the second sampling module at least monitors the second temperature parameter of the second heating element and feeds back to the main control module; Step 2: The main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter.

[0005] Preferably, the hair straightening plate also includes a third sampling module, which monitors the third temperature parameter of the first heating element or the second heating element and feeds back to the main control module; step 2 also includes: step 2.1: the main control module controls the working state of the first heating element and the second heating element according to the third temperature parameter and the preset temperature parameter; step 2.2: the main control module controls the working state of the first heating element and the second heating element according to the higher temperature parameter of the first temperature parameter and the second temperature parameter and the preset temperature parameter.

[0006] Preferably, before step 2.1, it also includes: the main control module compares the higher temperature parameter between the first temperature parameter and the second temperature parameter with the third temperature parameter; when the third temperature parameter is less than the higher temperature parameter between the first temperature parameter and the second temperature parameter, and the difference is greater than a preset value, the main control module controls the working state of the first heating element and the second heating element according to the higher temperature parameter between the first temperature parameter and the second temperature parameter.

[0007] Preferably, the working circuit of the third sampling module is relatively independent from the working circuits of the first sampling module and the second sampling module.

[0008] Preferably, step 2.1 also includes: the main control module compares the third temperature parameter with the preset temperature parameter, and when the third temperature parameter is less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to work; when the third temperature parameter is not less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to stop working.

[0009] Preferably, step 2.2 also includes: the main control module compares the higher temperature parameter of the first temperature parameter and the second temperature parameter with the preset temperature parameter; when the higher temperature parameter of the first temperature parameter and the second temperature parameter is less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to work; when the higher temperature parameter of the first temperature parameter and the second temperature parameter is not less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to stop working.

[0010] Preferably, step 2.2 also includes: when the higher temperature parameter of the first temperature parameter and the second temperature parameter is lower than the preset temperature parameter and reaches a preset value, the main control module controls the first heating element and the second heating element to work; when the higher temperature parameter of the first temperature parameter and the second temperature parameter is higher than the preset temperature parameter and reaches a preset value, the main control module controls the first heating element and the second heating element to stop working.

[0011] Preferably, the hair straightening plate further comprises a trigger module, and the main control module controls the operation of the first heating element and the second heating element by controlling whether the trigger module is triggered or not.

[0012] Preferably, when the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module controls the trigger module to be triggered periodically.

[0013] Preferably, the first sampling module is used to monitor the first temperature parameter of the first heating element, and the second sampling module is used to monitor the second temperature parameter of the first heating element and the second heating element; when the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module controls the trigger module to trigger periodically.

[0014] Preferably, the main control module compares the first temperature parameter, the second temperature parameter and the preset temperature parameter; when the first temperature parameter is less than the preset temperature parameter, the main control module controls the first heating element to work, and when the first temperature parameter is not less than the preset temperature parameter, the main control module controls the first heating element to stop working; when the second temperature parameter is less than the preset temperature parameter, the main control module controls the second heating element to work, and when the second temperature parameter is not less than the preset temperature parameter, the main control module controls the second heating element to stop working.

[0015] The embodiment of the present application provides a temperature control method for a hair straightening plate, the hair straightening plate includes a main control module, a first sampling module, a second sampling module, a first heating element, and a second heating element, and the temperature control method includes the following steps: Step 1: the first sampling module at least monitors the first temperature parameter of the first heating element and feeds back to the main control module, and the second sampling module at least monitors the second temperature parameter of the second heating element and feeds back to the main control module; Step 2: the main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter. In this way, the problem that the hair straightening plate is easily burned due to excessive temperature when in use is solved. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of an embodiment of a temperature control method for a hair straightening iron according to the present invention;

[0018] Figure 2 A flow chart of claim 1 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0019] Figure 3 A flow chart of claim 2 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0020] Figure 4 A flow chart of claim 3 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0021] Figure 5 A flow chart of claim 5 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0022] Figure 6A flow chart of claim 6 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0023] Figure 7 A flow chart of claim 7 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0024] Figure 8 Another flow chart of claim 7 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0025] Fig. 9 A flow chart of claim 8 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0026] Fig.10 A flow chart of claim 9 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0027] Fig.11 A flow chart of claim 10 of an embodiment of a temperature control method for a hair straightening iron of the present invention;

[0028] Fig.12 Another flow chart of claim 10 of an embodiment of the temperature control method for a hair straightening iron of the present invention.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is 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 the present invention.

[0033] The hair straightening clamp has two heating arms, which usually clamp the hair to heat it. Therefore, the temperature control system of the two heating arms of the hair straightening clamp is unified, that is, they heat and stop at the same time. However, in actual use, one arm often overheats. For example, one heating arm is used to press, heat and pull the hair in a straightened state, or to make the ointment used for straightening hair more evenly applied to the hair and prevent the ointment from being too much wrapped and adhering to the hair straightening clamp, it is also necessary to press and straighten the hair with one arm. At this time, due to the effect of the ointment, the temperature of the clamping arm in contact with the hair is reduced a lot, and the temperature of the other clamping arm will be significantly higher than the clamping arm in contact with the hair. At this time, the hair straightening clamp detects that the temperature of the clamp is lower than the set temperature, and it will start heating. At this time, the temperature of the clamping arm that is not in contact with the hair is significantly higher than the monitored temperature. At this time, heating will cause the temperature of the clamping arm that is not in contact with the hair to be too high, which is easy to cause damage, and even easily cause accidents due to high temperature.

[0034] In addition, if two temperature control systems are set up to monitor and control the heating of the two heating elements respectively, the high temperature of the heating elements can also be avoided. However, the sensitivity of the temperature monitoring device used in the hair straightening clamp is not very accurate. Therefore, when the two clamps are detected and controlled by two temperature control systems respectively, there may be a large deviation in the actual temperature of the two clamps, that is, the temperature of one clamp may be higher than the temperature of the other clamp, and the consistency of the product is also difficult to control. When the temperatures of the two clamps are different, if the hair is clamped with two clamps, the temperature of one side of the clamped hair will be higher than the temperature of the other side. When the temperature difference is large, it will affect the straightening effect. The user may intend to straighten the hair, but the hair may be curled, which will affect the straightening function to a certain extent.

[0035] In order to solve the above problems, this patent provides a temperature control method for a straightening iron, which aims to solve the problem that the straightening iron is easily burned due to excessive temperature of a single arm when in use.

[0036] For ease of understanding, the specific implementation of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0037] See also Figure 1-2 The hair straightening plate includes a main control module, a first sampling module, a second sampling module, a first heating element and a second heating element. The first sampling module at least monitors a first temperature parameter of the first heating element and feeds back to the main control module, and the second sampling module at least monitors a second temperature parameter of the second heating element and feeds back to the main control module; the main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter.

[0038] In this embodiment, a main control module, a first heating element, a second heating element, a first sampling module for monitoring at least the temperature parameter of the first heating element, and a second sampling module for monitoring at least the temperature parameter of the second heating element are arranged in the hair straightening plate.

[0039] The sampling module can be connected in series with the heating element, and the voltage data of the sampling module can be fed back to the main control module by utilizing the relationship between the temperature and resistance of the heating element, so as to calculate the temperature of the heating element. The sampling module can also be in the form of a thermistor, close to the heating element, to sense the temperature of the heating element. When the thermistor is connected to the circuit, if a constant voltage is connected, the temperature data can be calculated from its current data.

[0040] In the present embodiment, the first sampling module monitors the temperature of the first heating element by acquiring parameters related to the temperature of the first heating element. The function of the main control module can be realized by a single processing chip or by multiple processing chips working together. The first sampling module is close to the first heating element, and the temperature of the first sampling module itself changes with the temperature of the first heating element. The first sampling module is connected to the circuit, and its resistance value changes with the temperature. Therefore, the change in its temperature can be reflected according to the change in its resistance value, and then the change in the temperature of the first heating element can be reflected. The first temperature parameter can be a parameter of voltage, current or resistance obtained by the first sampling module, and the parameter is fed back to the main control module, and the main control module determines the temperature of the first heating element based on the parameter. In the present embodiment, the parameter obtained by the first sampling module monitoring the first heating element is named the first temperature parameter, and the parameter obtained by the second sampling module monitoring the second heating element is named the second temperature parameter. After the first sampling module and the second sampling module obtain the first temperature parameter and the second temperature parameter, the first temperature parameter and the second temperature parameter are fed back to the main control module, and the main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter. For example, if the main control module determines that the temperature of the first heating element or the second heating element is too high according to the first temperature parameter and the second temperature parameter, it controls it to stop heating. In this way, the problem that the straightening plate is easily burned due to excessive temperature during use is solved. It should be noted that in order to achieve differentiated monitoring, that is, in order to make the monitoring data reflect the temperature difference between the two heating elements, although the first sampling module and the second sampling module in the present invention both monitor at least one heating element, they cannot monitor the temperature parameters of the first heating element and the second heating element at the same time.

[0041] In the present invention, the hair straightening clamp adopts a single control system to control the heating of two heating elements, that is, no matter whether the two heating elements are connected in series or in parallel, there is only one control system, which controls the working state of the two heating elements at the same time, that is, heating at the same time and stopping heating at the same time. The consistency of the heating elements is relatively high, so under this scheme, when the clamp is not affected by other factors, such as preheating with power on, and the clamp does not touch other objects, the temperature difference between the two clamps is very small, and the hair straightening effect is not affected.

[0042] In a specific embodiment, the main control module controls the on and off of the heating element according to the parameter with a higher reaction temperature among the first temperature parameter and the second temperature parameter. Even if the temperature of one side of the splint cools down after being coated with materials such as hair oil and wax, as long as the temperature of the other side of the splint reaches the preset temperature, the main control module controls the heating element to stop heating. When the splint on the other side stops heating after the heating element stops heating, due to the higher temperature, the heat dissipation is faster than that of the splint coated with materials such as hair oil and wax. When the temperature of the splints on both sides is lower than the preset temperature, the main control module controls the two heating elements to start heating, and this cycle is used to gradually reduce the temperature difference between the two splints, so that the temperature of the splint coated with hair oil and wax increases, but at the same time the temperature of the splint on the other side does not exceed the preset temperature, so as to avoid the situation where the splint on the other side is damaged by high temperature due to the continuous heating of the heating element.

[0043] In this solution, another specific method can be used to avoid the situation where the temperature of one side of the clamp is too high and damaged. In this implementation, the straight hair clamp also includes a third sampling module, which monitors the third temperature parameter of the first heating element or the second heating element and feeds back to the main control module; in the process of the main control module controlling the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter, when the difference between the first temperature parameter and the second temperature parameter is not greater than a preset value, the main control module controls the working state of the first heating element and the second heating element according to the third temperature parameter and the preset temperature parameter; when the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module controls the working state of the first heating element and the second heating element according to the higher temperature parameter of the first temperature parameter and the second temperature parameter and the preset temperature parameter.

[0044] The first temperature parameter and the second temperature parameter respectively reflect the temperatures of the first heating element and the second heating element. A certain deviation is allowed between the two. The maximum allowable deviation is a preset value. When the deviation is not greater than the preset value, the main control module only needs to control the working state of the heating element according to the relationship between the third temperature parameter and the preset temperature parameter.

[0045] In actual control, the main control module first controls the working state of the heating element according to the relationship between the third temperature parameter and the preset temperature parameter. Only when the difference between the first temperature parameter and the second temperature parameter is large and exceeds the preset value, the working state of the heating element is controlled according to the relationship between the first temperature parameter and the second temperature parameter corresponding to the higher temperature and the preset temperature parameter. Figure 6When the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module compares the higher temperature parameter of the first temperature parameter and the second temperature parameter with the preset temperature parameter; when the higher temperature parameter of the first temperature parameter and the second temperature parameter is less than the preset temperature, the main control module controls the first heating element and the second heating element to work; when the higher temperature parameter of the first temperature parameter and the second temperature parameter is not less than the preset temperature, the main control module controls the first heating element and the second heating element to stop working.

[0046] In this embodiment, in the implementation method in which the main control module controls the working conditions of the first heating element and the second heating element according to the parameters fed back by the first sampling module and the second sampling module set in the straight hair plate circuit, the main control module needs to process the directly obtained voltage, current or resistance parameters, and then can obtain the temperature data of the first heating element and the second heating element. There will be a certain error in the measurement. Therefore, even if the temperatures of the two heating elements are the same, the first temperature parameter and the second temperature parameter themselves are not necessarily consistent. Allowing them to have a certain deviation can accurately determine whether the straight hair splint is coated with materials such as hair oil and wax, resulting in a decrease in the temperature of the unilateral splint. The first temperature parameter and the second temperature parameter are within the deviation range, and it can be considered that the temperatures of the two splints are the same or in the same use state. At this time, the main control module only needs to control the working state of the two heating elements according to the relationship between the third temperature parameter and the preset temperature parameter. One of the functions of the first temperature parameter and the second temperature parameter is to determine whether the two splints are in the same working state.

[0047] When the deviation between the first temperature parameter and the second temperature parameter exceeds the preset value, it can be judged that the temperature difference between the two clamps is abnormal, which meets the working state of applying hair oil and wax to the single-side clamp arm. At this time, the main control module controls the working state of the two heating elements according to the relationship between the parameter with a higher temperature value in the first temperature parameter and the second temperature parameter and the preset temperature parameter. At this time, the working state of the entire hair straightening clamp is consistent with the above-mentioned embodiment. The basic phenomenon that the higher the temperature, the faster the heat dissipation, is used to reduce the temperature difference between the clamp with low temperature and the clamp with high temperature through multiple power-on-off cycles, so as to achieve the purpose of heating the clamp with low temperature while avoiding the clamp with high temperature from being too high.

[0048] It should be noted that the comparison of temperature parameters in this application is based on the comparison of corresponding temperatures, rather than the comparison of voltage, current or resistance parameters directly obtained by the sensor. For example, the temperature value corresponding to the first temperature parameter is 170 degrees, the temperature value corresponding to the second temperature parameter is 175 degrees, and the temperature value represented by the preset value is 10 degrees. Since the temperature difference between the first heating element and the second heating element is 5 degrees, the difference is less than the preset temperature deviation of 10 degrees. At this time, the main control module controls the working state of the first heating element and the second heating element according to the third temperature parameter and the preset temperature parameter. When the difference between the first temperature parameter and the second temperature parameter is greater than the preset value, for example, the temperature value represented by the first temperature parameter is 170 degrees, the temperature value represented by the second temperature parameter is 130 degrees, and the temperature value represented by the preset value is 10 degrees. Since the temperature difference between the first temperature parameter and the second temperature parameter is 40 degrees, the difference is greater than the preset deviation of 10 degrees. At this time, the main control module controls the working state of the first heating element and the second heating element through the higher first temperature parameter and the preset temperature parameter.

[0049] As the temperature sensor ages or other unexpected faults occur, the monitored temperature corresponding to the parameters obtained by the sampling module may deviate significantly from the actual temperature. In order to prevent the main control module from continuously controlling the two heating elements to cause overall overheating when the third sampling module is abnormal, another implementation method is proposed to avoid this situation.

[0050] See also Figure 4 Before determining whether the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module compares the higher temperature parameter between the first temperature parameter and the second temperature parameter with the third temperature parameter. When the third temperature parameter is less than the higher temperature parameter between the first temperature parameter and the second temperature parameter, and the difference is greater than a preset value, the main control module controls the working state of the first heating element and the second heating element according to the higher temperature parameter between the first temperature parameter and the second temperature parameter.

[0051] In this embodiment, the preset value here represents the difference between the third temperature parameter and the parameter of the higher temperature of the first temperature parameter and the second temperature parameter. When the third sampling module fails or falls off, the third temperature parameter differs greatly from the parameter of the higher temperature of the first temperature parameter and the second temperature parameter. For example, the temperature value represented by the first temperature parameter is 195 degrees, the temperature value represented by the second temperature parameter is 198 degrees, the temperature value represented by the third temperature parameter is 115 degrees, and the temperature represented by the preset value is 10 degrees. At this time, since the temperature of the first heating element and the second heating element is higher, if the main control module still controls the working state of the first heating element and the second heating element according to the temperature value represented by the third temperature parameter, the first heating element and the second heating element will continue to be heated, causing damage.

[0052] It should be noted that there are many implementations of the third sampling module being arranged in the working circuit of the hair straightening plate. The specific implementation that meets the above requirements is not limited in this embodiment, and for ease of understanding, this application provides a preferred implementation.

[0053] Optionally, the working circuit of the third sampling module is relatively independent from the working circuits of the first sampling module and the second sampling module.

[0054] In this embodiment, the working circuit of the third sampling module is relatively independent of the working circuits of the first sampling module and the second sampling module, so that the third temperature parameter obtained by the third sampling module will not be disturbed, and more accurate parameters can be obtained. Preferably, in addition to being connected to the main control module, the third sampling module does not have a direct circuit connection with the second sampling module or the third sampling module.

[0055] The main control module specifically controls the heating and stopping of the first heating element and the second heating element. The main control module will determine whether it is necessary to start heating only when the first heating element and the second heating element are not heating. Moreover, the main control module will determine whether it is necessary to stop heating only when the first heating element and the second heating element are heating.

[0056] Usually, as long as the preset temperature is higher than the monitoring temperature and the heating element is not working, the main control module controls the heating element to start heating; as long as the monitoring temperature reaches the preset temperature, the main control module controls the heating element to stop heating. Because the hair straightener has a low specific heat capacity and a small mass, it dissipates heat quickly at high temperatures, so the working state of the heating element will switch frequently at this stage, which is easy to cause circuit failure and shorten the service life.

[0057] In one embodiment of the present invention, an optimization adjustment is performed to prevent the main control module from too frequently controlling the switching of the working state of the heating element when the hair straightening iron reaches a preset temperature during the preheating state but is not used in time.

[0058] In this embodiment, when the main control module controls the working state of the first heating element and the second heating element according to the higher temperature parameter of the first temperature parameter and the second temperature parameter and the preset temperature parameter, when the higher temperature parameter of the first temperature parameter and the second temperature parameter is lower than the preset temperature parameter and reaches a preset value, the main control module controls the first heating element and the second heating element to work; when the higher temperature parameter of the first temperature parameter and the second temperature parameter is higher than the preset temperature parameter and reaches a preset value, the main control module controls the first heating element and the second heating element to stop working. That is, after the heating element reaches the preset temperature, it does not stop heating immediately, but after the heating element temperature exceeds the preset temperature by a preset value, the main control module controls the heating element to stop heating, and the preset value here can be set between 5 degrees and 15 degrees; after the heating element stops heating, its temperature drops to a preset value lower than the preset temperature, and the main control module controls the heating element to start heating, and this preset value can be set between 5 degrees and 15 degrees; after that, after the heating element temperature exceeds the preset temperature by a preset value, the main control module controls the heating element to stop heating, and so on.

[0059] This embodiment effectively avoids the problem that the main control module controls the heating element to frequently switch working states when the hair straightening plate reaches a preset temperature but is not used, by setting a temperature buffer zone.

[0060] It should be noted that based on the main control module controlling the working states of the first heating element and the second heating element, there are multiple implementations of the main control module controlling the first heating element and the second heating element. For ease of understanding, the present application provides a preferred implementation.

[0061] See also Fig. 9 The hair straightening plate further comprises a trigger module, and the main control module controls the operation of the first heating element and the second heating element by controlling whether the trigger module is triggered or not.

[0062] In this embodiment, the hair straightening plate includes a trigger module, and the main control module controls the first heating element and the second heating element to continue heating or stop heating through the trigger module.

[0063] It should be noted that, in addition to the above-mentioned implementation method for controlling the working state of the first heating element and the second heating element, the main control module also has other implementation methods for controlling the working state of the first heating element and the second heating element. This embodiment does not limit the specific implementation method that meets the above requirements. For ease of understanding, this application provides a preferred implementation method.

[0064] See also Fig.10 When the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module controls the trigger module to trigger periodically.

[0065] In this embodiment, the main control module controls the trigger module to trigger periodically, so that the first heating element and the second heating element continue or stop heating repeatedly according to the cycle within a time period, and uses the phenomenon that the greater the temperature difference, the faster the heat dissipation, to control the temperature difference between the high-temperature heating element and the low-temperature heating element, so as to achieve the effect of reducing the temperature difference between the first heating element and the second heating element, and avoid the high-temperature heating element from being too high in temperature. The trigger cycle and the trigger time ratio can be actively controlled and pre-set to certain fixed values, such as heating for 2 seconds and stopping for 1 second, or the periodic triggering can be passively realized by setting the temperature buffer interval in the form of continuous heating-cooling-heating-cooling. There are many ways to realize the main control module actively controlling the periodic triggering of the trigger module. Preferably, a PWM output pin is set on the main control module, and the trigger module is connected to the PWM output pin. The main control module periodically outputs an electrical signal to the trigger module through the PWM pin, thereby realizing the main control module controlling the periodic triggering of the trigger module, wherein the PWM pin is a pulse width modulation output pin that outputs a modulated pulse width.

[0066] The main control module is electrically connected through the PWM pin, and outputs an electrical signal to the trigger module, so that the main control module controls the periodic triggering of the trigger module, and can control the trigger time within each cycle to control the heating speed. Based on the basic common sense that the higher the temperature, the faster the heat dissipation, even if the high-temperature clamp arm and the low-temperature clamp arm are continuously heated and heated at the same time, the temperature difference between the two will gradually decrease. In this embodiment, through periodic heating, the temperature difference between the high-temperature clamp arm and the low-temperature clamp arm will decrease more quickly, and the heating speed of the high-temperature clamp arm is significantly slower than that of the low-temperature clamp arm, thereby avoiding excessive temperature difference between the high-temperature clamp arm and the low-temperature clamp arm, and preventing the problem of excessive temperature of the high-temperature clamp arm.

[0067] The present invention also proposes another implementation mode, in which the first sampling module is used to monitor the first temperature parameter of the first heating element, and the second sampling module is used to monitor the second temperature parameter of the first heating element and the second heating element. The second temperature parameter in this embodiment is the temperature parameter of the first heating element and the second heating element as a whole, reflecting the temperature of the first heating element and the second heating element as a whole. In this embodiment, when the first temperature parameter and the second temperature parameter are inconsistent, the main control module controls the trigger module to trigger periodically. In this embodiment, the inconsistency between the first temperature parameter and the second temperature parameter reflects the difference in temperature between the two heating elements. When the temperatures of the two heating elements are different, the main control module controls the periodic triggering of the trigger module to make the two heating elements generate heat and dissipate heat periodically, which can slow down the heating rate of the high-temperature heating element and reduce the comprehensive heating rate of the high-temperature heating element, thereby reducing the temperature difference between the high-temperature heating element and the low-temperature heating element, and preventing the high-temperature heating element from burning due to excessive temperature.

[0068] In summary, the embodiment of the present application provides a temperature control method for a hair straightening plate, the hair straightening plate includes a main control module, a first sampling module, a second sampling module, a first heating element and a second heating element, and the temperature control method includes the following steps: Step 1: the first sampling module at least monitors the first temperature parameter of the first heating element and feeds back to the main control module, and the second sampling module at least monitors the second temperature parameter of the second heating element and feeds back to the main control module; Step 2: the main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter. In this way, the problem that the hair straightening plate is easily burned due to excessive temperature when in use is solved.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A temperature control method for a hair straightening iron, characterized in that: The hair straightening plate comprises a main control module, a first sampling module, a second sampling module, a first heating element and a second heating element, and the temperature control method comprises the following steps: Step 1: the first sampling module at least monitors a first temperature parameter of a first heating element and feeds back the first temperature parameter to the main control module, and the second sampling module at least monitors a second temperature parameter of a second heating element and feeds back the first temperature parameter to the main control module; Step 2: The main control module controls the working state of the first heating element and / or the second heating element according to the first temperature parameter and the second temperature parameter; The hair straightening plate further comprises a third sampling module, which monitors a third temperature parameter of the first heating element or the second heating element and feeds back the third temperature parameter to the main control module; The step 2 also includes: Step 2.1: the main control module controls the working states of the first heating element and the second heating element according to the third temperature parameter and the preset temperature parameter; or, Step 2.2: the main control module controls the working state of the first heating element and the second heating element according to the higher temperature parameter of the first temperature parameter and the second temperature parameter and the preset temperature parameter; The step 2.1 also includes: The main control module compares the higher temperature parameter of the first temperature parameter and the second temperature parameter with a third temperature parameter; When the third temperature parameter is less than the higher temperature parameter between the first temperature parameter and the second temperature parameter, and the difference is greater than a preset value, proceed to step 2.2; otherwise, proceed to step 2.

1.

2. The temperature control method for a hair straightening iron according to claim 1, characterized in that: The working circuit of the third sampling module is relatively independent of the working circuits of the first sampling module and the second sampling module.

3. The temperature control method for a hair straightening iron according to claim 1 or 2, characterized in that: The step 2.1 also includes: The main control module compares the third temperature parameter with the preset temperature parameter. When the third temperature parameter is less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to work; when the third temperature parameter is not less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to stop working.

4. The temperature control method for a hair straightening iron according to claim 1 or 2, characterized in that: The step 2.2 also includes: The main control module compares the higher temperature parameter of the first temperature parameter and the second temperature parameter with the preset temperature parameter; When the higher temperature parameter of the first temperature parameter and the second temperature parameter is less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to work; When the higher temperature parameter of the first temperature parameter and the second temperature parameter is not less than the preset temperature parameter, the main control module controls the first heating element and the second heating element to stop working.

5. The temperature control method for a hair straightening iron according to claim 4, characterized in that: The step 2.2 also includes: When the higher temperature parameter of the first temperature parameter and the second temperature parameter is lower than the preset temperature parameter and reaches a preset value, the main control module controls the first heating element and the second heating element to work; When the higher temperature parameter of the first temperature parameter and the second temperature parameter is higher than the preset temperature parameter and reaches a preset value, the main control module controls the first heating element and the second heating element to stop working.

6. The temperature control method for a hair straightening iron according to claim 1, characterized in that: The hair straightening plate further comprises a trigger module, and the main control module controls the operation of the first heating element and the second heating element by controlling whether the trigger module is triggered or not.

7. The temperature control method for a hair straightening iron according to claim 6, characterized in that: When the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module controls the trigger module to be triggered periodically.

8. The temperature control method for a hair straightening iron according to claim 6, characterized in that: The first sampling module is used to monitor the first temperature parameter of the first heating element, and the second sampling module is used to monitor the second temperature parameters of the first heating element and the second heating element; when the difference between the first temperature parameter and the second temperature parameter is greater than a preset value, the main control module controls the trigger module to be triggered periodically.

9. The temperature control method for a hair straightening iron according to claim 1, characterized in that: The main control module compares the first temperature parameter, the second temperature parameter and the preset temperature parameter; When the first temperature parameter is less than the preset temperature parameter, the main control module controls the first heating element to work, and when the first temperature parameter is not less than the preset temperature parameter, the main control module controls the first heating element to stop working; When the second temperature parameter is less than the preset temperature parameter, the main control module controls the second heating element to work; when the second temperature parameter is not less than the preset temperature parameter, the main control module controls the second heating element to stop working.

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