Electric toothbrush control method, system, electric toothbrush and storage medium

Abstract

The embodiment of the present application discloses a control method, system, electric toothbrush and storage medium for an electric toothbrush, wherein the control method for an electric toothbrush comprises the following steps: when the electric toothbrush is working, a first ambient temperature value of the motor of the electric toothbrush is obtained based on a temperature detection circuit, and the first ambient temperature value is sent to a control chip; a first temperature threshold is preset in the control chip, the control chip compares the first ambient temperature value with the first temperature threshold, and when the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip generates a cooling instruction; the control chip reduces the ambient temperature of the motor according to the cooling instruction. The control method for an electric toothbrush of the present invention solves the technical problem of a low safety factor of an electric toothbrush.

Description

Technical Field

[0001] The present application relates to the technical field of electric toothbrushes, and in particular to a control method and system for an electric toothbrush, an electric toothbrush and a storage medium. Background Art

[0002] Electric toothbrushes are widely used. Electric toothbrushes are equipped with a power supply and a motor. When using an electric toothbrush, the operation of the motor will generate a lot of heat, which will affect the power supply and may cause safety accidents such as explosions. In addition, the motor itself may also cause problems such as shutdowns if it works in a high temperature environment for a long time.

[0003] To sum up, when a motor works in a high temperature environment for a long time, or the heat generated for a long time, there will be certain safety hazards. Therefore, the technical problem that the invention actually wants to solve is how to reduce the temperature of the motor or the environment in which the motor is located, thereby improving the safety factor of the electric toothbrush.

[0004] The above contents are only used to assist in understanding the technical solution of the invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] In view of the above problems, the temperature of the motor or the environment in which the motor is located is reduced, resulting in a lower safety factor of the electric toothbrush. The present invention proposes a control method for an electric toothbrush, aiming to solve the technical problem of the low safety factor of the electric toothbrush.

[0006] To achieve the above object, the control method of the electric toothbrush proposed in the present invention comprises the following steps:

[0007] When the electric toothbrush is working, a first ambient temperature value of the motor of the electric toothbrush is obtained based on the temperature detection circuit, and the first ambient temperature value is sent to the control chip;

[0008] A first temperature threshold is preset in the control chip, and the control chip compares the first ambient temperature value with the first temperature threshold. When the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip generates a temperature reduction instruction;

[0009] The control chip lowers the ambient temperature of the motor according to the cooling instruction.

[0010] In one embodiment, the control chip controls the motor to lower the ambient temperature of the motor according to the temperature reduction instruction in the following steps:

[0011] The control chip cuts off the power to the motor according to the temperature reduction instruction to control the motor to stop running.

[0012] In one embodiment, the step of controlling the chip to reduce the ambient temperature of the motor according to the temperature reduction instruction is specifically as follows:

[0013] The control chip turns off the power supply according to the temperature reduction instruction to control the motor to stop running.

[0014] In one embodiment, the step of controlling the chip to reduce the ambient temperature of the motor according to the temperature reduction instruction is specifically as follows:

[0015] The control chip reduces the power to the motor according to the temperature reduction instruction to control the motor to run at a lower speed.

[0016] In one embodiment, the step of controlling the chip to reduce the ambient temperature of the motor according to the temperature reduction instruction is specifically as follows:

[0017] The control chip controls the heat dissipation system to dissipate the ambient temperature of the motor according to the temperature reduction instruction.

[0018] In one embodiment, a first temperature threshold is preset in the control chip, and the control chip compares the first ambient temperature value with the first temperature threshold. When the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip generates a cooling instruction in the following steps:

[0019] A first temperature threshold is preset in the control chip, and the first temperature threshold includes a minimum threshold and a maximum threshold. The control chip compares the first ambient temperature value with the minimum threshold and the maximum threshold; when the first ambient temperature value is greater than or equal to the maximum threshold, a first control instruction is generated; when the first ambient temperature value is greater than or equal to the minimum threshold and less than the maximum threshold, a second control instruction is generated;

[0020] The specific steps for the control chip to control the motor to stop running or reduce the speed according to the temperature reduction instruction are:

[0021] The control chip controls the motor to stop running according to the first control instruction, controls the motor to reduce the speed according to the second control instruction, and / or controls the heat dissipation system to dissipate the ambient temperature of the motor according to the cooling instruction.

[0022] In one embodiment, after the step of controlling the motor to reduce the speed according to the second control instruction and / or controlling the heat dissipation system to dissipate the ambient temperature of the motor according to the temperature reduction instruction, the following steps are further included:

[0023] The control chip records the execution time value of the second control instruction, and compares the execution time value with a preset time threshold in real time. When the execution time value is greater than or equal to the time threshold, the control chip generates a fault temperature detection instruction;

[0024] The control chip controls the temperature detection circuit to detect a second ambient temperature value of the motor according to the fault temperature detection instruction;

[0025] The control chip compares the second ambient temperature value with the first temperature threshold value. When the second ambient temperature value is greater than or equal to the first temperature threshold value, the control chip controls the motor to stop running.

[0026] In one embodiment, after the control chip controls the motor to stop running according to the first control instruction, controls the motor to reduce the speed according to the second control instruction, and / or controls the heat dissipation system to dissipate the ambient temperature of the motor according to the temperature reduction instruction, the step further includes:

[0027] The control chip presets a second temperature threshold, and the second temperature threshold is less than the lowest threshold of the first temperature threshold; when the first ambient temperature value is less than or equal to the second temperature threshold, the motor is controlled to run at an initial speed.

[0028] In one embodiment, the temperature detection circuit is an NTC temperature detection circuit.

[0029] The present invention also provides a control system for an electric toothbrush, comprising a control chip, a power supply electrically connected to the control chip, a motor, a temperature detection circuit, and a heat dissipation system; wherein:

[0030] The power supply is used to provide current to the motor;

[0031] The motor is used to drive the toothbrush head to rotate and / or vibrate;

[0032] The temperature detection circuit is used to detect the ambient temperature of the motor;

[0033] The control chip is used to control the motor to stop running or reduce the speed of running according to the ambient temperature, and / or control the heat dissipation system to dissipate the ambient temperature of the motor.

[0034] The present invention also provides an electric toothbrush, comprising a toothbrush head, a handle shell and a control system of the electric toothbrush as described above;

[0035] A cavity is arranged in the handle shell, and the control system of the electric toothbrush is fixedly arranged in the cavity; and the output shaft of the motor is connected with the toothbrush head.

[0036] In one embodiment, the control chip is fixedly connected to the inner wall of the handle shell, and the motor corresponds to the control chip and is spaced apart; the electric toothbrush also includes a temperature sensor, which is disposed on the board of the control chip facing the motor and is spaced apart from the motor to detect the ambient temperature of the motor.

[0037] The present invention further provides a readable storage medium, which stores a control program for an electric toothbrush. When the control program for the electric toothbrush is executed by a processor, the steps of the control method for the electric toothbrush as described above are implemented.

[0038] A control method for an electric toothbrush of the present invention monitors the ambient temperature around a motor through a temperature detection circuit. Compared with the case where the motor is not controlled by the ambient temperature around the motor, the present invention controls whether the motor stops running or runs at a reduced speed according to the ambient temperature around the motor through a control chip to reduce the temperature of the motor, thereby solving the technical problem of a low safety factor of the electric toothbrush and preventing the influence of the program running in a high temperature environment on the motor and / or other electronic components, thereby improving the service life of the electric toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A schematic diagram showing the steps of an embodiment of a method for controlling an electric toothbrush of the present invention;

[0041] Figure 2 for Figure 1 A schematic diagram of the step of cutting off the electrical connection of the motor to control the motor to stop running;

[0042] Figure 3 for Figure 1 Schematic diagram of the steps of turning off the power supply to control the motor to stop running;

[0043] Figure 4 for Figure 1 Schematic diagram of the steps of reducing the output current to the motor to control the motor to run at a lower speed;

[0044] Figure 5 for Figure 4 Schematic diagram of the steps for cooling the ambient temperature of the motor through the cooling system.

[0045] Figure 6 A schematic diagram of the steps of another embodiment of the control method of the electric toothbrush of the present invention;

[0046] Figure 7 A schematic diagram of the steps of another embodiment of the control method of the electric toothbrush of the present invention;

[0047] Figure 8 It is a schematic diagram of the structure of the control system of the electric toothbrush of the present invention.

[0048] 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

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. 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 this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] 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 in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0051] 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 meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B.

[0052] The present invention provides a control method for an electric toothbrush, comprising the following steps: when the electric toothbrush is working, a first ambient temperature value of a motor of the electric toothbrush is obtained based on a temperature detection circuit, and the first ambient temperature value is sent to a control chip; a first temperature threshold is preset in the control chip, the control chip compares the first ambient temperature value with the first temperature threshold, and when the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip generates a temperature reduction instruction;

[0053] The control chip lowers the ambient temperature of the motor according to the cooling instruction.

[0054] In the embodiment of the present invention, please refer to Figure 1 As shown, the control method of the electric toothbrush specifically includes the following steps:

[0055] Step S100: When the electric toothbrush is working, the temperature detection circuit will monitor the ambient temperature around the motor of the electric toothbrush in real time to obtain the first ambient temperature value around the motor of the electric toothbrush, and send the obtained first ambient temperature value to the control chip. It should be noted that in this embodiment, the temperature detection circuit is not in contact with the motor of the electric toothbrush, so it does not detect the temperature of the body of the motor of the electric toothbrush to prevent the temperature detection circuit from being damaged by the excessive temperature of the body of the motor. However, in some embodiments, the temperature detection circuit can directly contact the body of the motor of the electric toothbrush to obtain the temperature of the motor of the electric toothbrush.

[0056] Step S200: A first temperature threshold is preset in the control chip; when the control chip receives the first ambient temperature value, the control chip compares the first ambient temperature value with the preset first temperature threshold in real time, and when the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip will generate a cooling instruction to control the motor through the generated cooling instruction. It should be noted that when the first ambient temperature value is greater than or equal to the first temperature threshold, it means that the ambient temperature around the motor is too high, and safety accidents such as explosion or downtime may occur, so it is necessary to cool the motor or the environment around the motor to prevent the occurrence of safety accidents.

[0057] Step S300: After the control chip generates a cooling instruction, the control chip will control the motor to stop running or reduce the speed according to the cooling instruction, or control the cooling system to cool the motor or the environment around the motor, so as to cool the motor or the environment around the motor. It should be noted that the cooling system described herein includes but is not limited to a built-in cooling fan and a heat sink.

[0058] In this embodiment, the ambient temperature around the motor is monitored by a temperature detection circuit. Compared with the case where the motor is not controlled by the ambient temperature around the motor, the present invention controls whether the motor stops running or runs at a reduced speed according to the ambient temperature around the motor by controlling the chip, or actively dissipates the heat of the motor's environment through a built-in heat dissipation system to reduce the temperature of the motor, thereby solving the technical problem of a low safety factor of the electric toothbrush, and preventing the motor and / or other electronic components from being affected by the program running in a high temperature environment, thereby increasing the service life of the electric toothbrush.

[0059] It is worth noting that the present embodiment sets the first temperature threshold and the second temperature threshold as an explanation example of the embodiment scheme. The present application can set multiple temperature thresholds as temperature monitoring points. Specifically, the third temperature threshold, the fourth temperature threshold...the Nth temperature threshold can be set, and the values ​​between the first temperature threshold, the second temperature threshold...the Nth temperature threshold change in a step-by-step manner or in a curve. For example, the first temperature threshold can be set at 85°C, the second temperature threshold can be set at 80°C..., and each temperature threshold corresponds to a cooling instruction. When the control chip obtains the current first ambient temperature value, the data of the first ambient temperature value is processed. For example, if the first ambient temperature value is 86°C, the first ambient temperature value is greater than the first temperature threshold, indicating that the ambient temperature around the motor exceeds the maximum value of the threshold, which may cause a fire (or cause thermal damage to the body). possibility, the control chip will generate a corresponding cooling instruction and execute a corresponding operation, such as controlling the whole machine to power off; for another example, if the second ambient temperature value is 46°C, then the second ambient temperature value is greater than the second temperature threshold (the second temperature threshold may be 45°C), indicating that the ambient temperature around the motor is too high, affecting the operation of the machine or causing danger, then the control chip will generate a corresponding cooling instruction and execute a corresponding operation, such as controlling the motor to power off; for another example, if the first ambient temperature value is 34°C, then the first ambient temperature value is less than the Mth temperature threshold (the Mth temperature threshold may be the temperature limit, such as 35°C), indicating that the ambient temperature change around the motor exceeds the minimum temperature threshold, but does not affect the operation of the machine or cause danger, then the control chip will generate a corresponding cooling instruction and execute a corresponding operation, such as controlling the power of the motor and reducing the speed.

[0060] In the above three examples, the first temperature threshold, the second temperature threshold, and the Mth temperature threshold decrease in a step-by-step manner, and the corresponding execution operations are set from high to low corresponding risk levels, so that precise control of temperature warnings can be achieved.

[0061] For the above-mentioned execution operations, the control chip executes at least two operations according to the cooling instruction, for example, simultaneously reducing the rotation speed and controlling the opening of the cooling system (see the following description for details on controlling the opening and / or closing of the cooling system), thereby further achieving the effect of rapid cooling and avoiding the user's strong discomfort caused by the rapid temperature rise.

[0062] Not only that, at each temperature threshold, there is also a step-by-step intelligent control of cooling operation. For example, when the control chip obtains the current Kth ambient temperature value, it processes the data of the Kth ambient temperature value. For example, if the Kth ambient temperature value is 44°C, then the first ambient temperature value is greater than the Kth temperature threshold (the Kth temperature threshold is 40°C, and the Pth temperature threshold is 45 degrees Celsius, indicating that the ambient temperature around the motor exceeds the maximum threshold value, which may cause a fire (or cause thermal damage to the body). The corresponding cooling instruction is to control the power of the motor, but what is special is that the cooling instruction has a step-by-step change. The control chip detects the change of the current Kth ambient temperature value in real time. The Kth ambient temperature value may be 44°C, 43°C, 42°C, 41°C (Kth The ambient temperature value is within the range of [45℃-40℃], and each temperature corresponds to a different power setting value. Therefore, when the control chip is between the Kth temperature threshold and the Pth temperature threshold, the operation performed is to reduce the motor speed, and the control chip will also monitor the Kth ambient temperature value within this range. According to the Kth ambient temperature value in the [45℃-40℃] set value (any value of 44℃, 43℃, 42℃, 41℃), the corresponding power value is reduced to achieve high-precision processing of temperature warnings, avoid rapid heating and cooling, and always keep the overall temperature cooled within a relatively constant temperature range to avoid user tactile discomfort.

[0063] Furthermore, the step of the control chip controlling the motor to reduce the ambient temperature of the motor according to the cooling instruction is specifically as follows: the control chip cuts off the power supply to the motor according to the cooling instruction to control the motor to stop running.

[0064] In this embodiment, if Figure 2 As shown, the step of controlling the chip to reduce the ambient temperature of the motor according to the temperature reduction instruction in the above step S300 specifically includes:

[0065] S310: When the control chip generates a cooling instruction, the control chip cuts off the electrical connection with the motor according to the cooling instruction, and then controls the motor to stop running. That is, only the electrical connection with the motor is cut off to stop the motor from running for cooling, but the electrical connection with other electronic components is not cut off, and other electronic components can still be used normally, such as the indicator light. After the motor stops running, the indicator light can still work normally. In this embodiment, by cutting off the electrical connection with the motor, compared with directly turning off the power supply, it will not affect the use of other electronic components. Even after the motor is powered off, other electronic components can still be in a normal state of use.

[0066] Furthermore, the step of controlling the chip to reduce the ambient temperature of the motor according to the cooling instruction is specifically as follows: the control chip turns off the power supply according to the cooling instruction to control the motor to stop running.

[0067] In this embodiment, if Figure 3 As shown, the step of controlling the chip to reduce the ambient temperature of the motor according to the temperature reduction instruction in the above step S300 specifically includes:

[0068] S320: When the control chip generates a cooling instruction, the control chip turns off the power supply according to the cooling instruction, and then controls the motor to stop running. That is, when the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip will turn off the power supply according to the cooling instruction, and then turn off the current output to the motor. In this embodiment, by directly turning off the power supply, the entire electric toothbrush stops working. Compared with only disconnecting the electrical connection to the motor, since no electronic components are continuously running, the motor cooling efficiency of the electric toothbrush is faster, and therefore the safety factor is higher.

[0069] Furthermore, the step of controlling the chip to reduce the ambient temperature of the motor according to the cooling instruction is specifically as follows: the control chip reduces the power to the motor according to the cooling instruction to control the motor to reduce the speed of operation.

[0070] In this embodiment, if Figure 4 As shown, the step of controlling the chip to reduce the ambient temperature of the motor according to the temperature reduction instruction in the above step S300 specifically includes:

[0071] S330: After the control chip generates a cooling instruction, the control chip reduces the power to the motor according to the cooling instruction to control the motor to reduce the speed, that is, control the motor to reduce the speed of the rotor, thereby achieving the cooling effect. It should be noted that the power reduction of the motor can be reduced according to the preset reduction amplitude, or the reduction amplitude can be calculated according to the specific value of the current first ambient temperature value being greater than the first temperature value, that is, when the first ambient temperature value is much greater than the first temperature value, the power can be greatly reduced, and when the first ambient temperature value is equal to the first temperature value, the power can be slightly reduced. In this embodiment, by reducing the power to the motor and then controlling the motor to reduce the speed, the motor can continue to run at a low speed. Compared with directly cutting off the power to the motor, reducing the power to the motor can allow the electric toothbrush to continue to be used normally, while achieving the cooling effect. It should be noted that in this embodiment, the control chip can also simultaneously shut down the work of some electronic components, such as non-essential electronic components, thereby achieving the cooling effect, including but not limited to, for example, atmosphere lights. It should also be noted that in this embodiment, the control chip can also simultaneously shut down the work of all other electronic components, thereby achieving the effect of rapid cooling. It should be noted that the control chip can set a specific temperature threshold to implement specific operations of the control chip.

[0072] It should be noted that, in the present embodiment, the control chip reduces the power to the motor according to the cooling instruction in a manner including but not limited to reducing the output current and / or output voltage to the motor, that is, by reducing the output current and / or output voltage to the motor to reduce the power of the motor, thereby causing the motor to reduce the speed of the rotor.

[0073] Furthermore, the step of controlling the chip to lower the ambient temperature of the motor according to the cooling instruction is specifically as follows: the control chip controls the heat dissipation system to dissipate the ambient temperature of the motor according to the cooling instruction.

[0074] In this embodiment, see Figure 5 As shown, after step S330, the following steps are also included:

[0075] The S340 control chip lowers the ambient temperature of the motor according to the cooling instruction. It should be noted that the cooling instruction can be a cooling instruction for the heat dissipation system, and then controls the opening and / or closing of the heat dissipation system to actively dissipate the heat of the motor or the environment in which the motor is located to achieve the cooling effect. It should also be noted that the heat dissipation system includes but is not limited to active heat dissipation equipment and / or devices such as cooling fans and heat sinks, which are all arranged inside the electric toothbrush. In this embodiment, the motor or the ambient temperature of the motor is actively cooled or dissipated by the built-in heat dissipation system. Compared with only controlling the motor to stop running or reduce the speed of operation, the cooling and heat dissipation efficiency is better. At the same time, the heat dissipation system can be used to actively cool or dissipate the heat when the electric toothbrush is working normally, so it does not affect the normal use of the electric toothbrush.

[0076] It can be understood that the execution operation corresponding to a cooling instruction can be set as: controlling the opening and / or closing of the cooling system. For example, if the third ambient temperature value is 42°C, then the third ambient temperature value is greater than the third temperature threshold (the third temperature threshold can be 40°C), indicating that the ambient temperature around the motor changes too high, affecting the operation of the machine or causing danger. The control chip will generate a corresponding cooling instruction and execute the corresponding operation to control the opening and / or closing of the cooling system to dissipate heat from the motor.

[0077] Furthermore, a first temperature threshold is preset in the control chip, and the control chip compares the first ambient temperature value with the first temperature threshold. When the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip generates a cooling instruction in the following steps: a first temperature threshold is preset in the control chip, and the first temperature threshold includes a minimum threshold and a maximum threshold. The control chip compares the first ambient temperature value with the minimum threshold and the maximum threshold; when the first ambient temperature value is greater than or equal to the maximum threshold, a first control instruction is generated; when the first ambient temperature value is greater than or equal to the minimum threshold and less than the maximum threshold, a second control instruction is generated; the control chip controls the motor to stop running or reduce the speed according to the cooling instruction. The specific steps are: the control chip controls the motor to stop running according to the first control instruction, controls the motor to reduce the speed according to the second control instruction, and / or controls the heat dissipation system to dissipate the ambient temperature of the motor according to the cooling instruction.

[0078] In this embodiment, step S200 specifically includes: the first temperature threshold preset in the control chip includes a minimum threshold and a maximum threshold, the control chip compares the first ambient temperature value with the minimum threshold and the maximum threshold respectively, and generates a first control instruction and a second control instruction respectively according to the comparison structure. That is, when the first ambient temperature value is greater than or equal to the maximum threshold, the first control instruction is generated; when the first ambient temperature value is greater than or equal to the minimum threshold and less than the maximum threshold, the second control instruction is generated.

[0079] In this embodiment, if Figure 6 As shown, after step S300, the following steps are also included:

[0080] The control chip controls the motor to stop running according to the first control instruction, and controls the motor to reduce the speed according to the second control instruction. The method of controlling the motor to stop running according to the first control instruction and controlling the motor to reduce the speed according to the second control instruction is described above, which will not be described in detail here. In this embodiment, different cooling instructions are executed according to different ambient temperature values ​​around the motor. For example, when the first temperature value is greater than the maximum threshold, the control chip runs the first control instruction, and the operation executed is to control the motor to stop running. When the first temperature value is greater than or equal to the minimum threshold and less than the maximum threshold, the control chip runs the second control instruction, and the operation executed is to control the motor to reduce the operating power. In summary, this embodiment adopts different control methods for the motor to achieve cooling of the motor.

[0081] S400: A second temperature threshold is preset in the control chip, and the second temperature threshold is less than the minimum threshold of the first temperature threshold; when the first ambient temperature value is less than or equal to the second temperature threshold, the control chip controls the motor to run at the initial speed. It should be noted that the control chip controls the motor to run at the initial speed, such as the speed of the electric toothbrush in step S100, or the preset speed. It should be noted that if the first temperature threshold is 80° and the second temperature threshold is 60°, when the first ambient temperature value is greater than or equal to 80°, the control chip will control the motor to stop running or reduce the speed according to the cooling instruction. At this time, the ambient temperature around the motor will gradually decrease until it decreases to 60° or less than 60°. The control chip will control the motor to run at the initial speed, that is, restore to the normal speed, that is, the electric toothbrush returns to a normal working state.

[0082] In this embodiment, by setting the second temperature threshold, after the ambient temperature around the motor drops to a certain level, the motor will be controlled to return to the initial speed, that is, the normal working state of the electric toothbrush will be restored. Compared with when the second temperature threshold is not set, after the ambient temperature around the motor drops, the motor will also operate at the current speed and will not return to the initial speed state, so its operation will always be maintained at a low state.

[0083] In this embodiment, if Figure 7 As shown, after the control chip controls the motor to reduce the speed according to the second control, the following steps are also included:

[0084] S500: The control chip records the execution time value of the second control instruction, that is, records the duration of executing the second control instruction, and compares the execution time value with the preset time threshold in real time. When the execution time value is greater than or equal to the time threshold, the control chip generates a fault temperature detection instruction; that is, after the control chip executes the second control instruction for a period of time, a fault temperature detection instruction will be generated.

[0085] S600: The control chip controls the temperature detection circuit to detect the second ambient temperature value of the motor according to the fault temperature detection instruction. That is, after the control chip executes the second control instruction for a period of time, the control chip controls the temperature detection circuit to detect the second ambient temperature value around the motor.

[0086] S700: The control chip compares the acquired second ambient temperature value with the first temperature threshold value. When the second ambient temperature value is greater than or equal to the first temperature threshold value, the control chip controls the motor to stop running. That is, after the control chip controls the motor to reduce the speed for a period of time, when the detected second ambient temperature value has not been less than the first temperature threshold value, the motor will be directly controlled to stop running. In this embodiment, after the motor is reduced in speed, the temperature will also decrease after running for a period of time under normal circumstances, but at this time, the second ambient temperature value has not decreased, or the reduction effect is not obvious, and the motor will be controlled to stop running. Compared with the case where the second ambient temperature value is not detected, if the temperature still does not decrease after the motor is reduced in speed, the safety hazard is reduced again. It should be noted that what is described here is that under normal conditions, after the motor's operating speed is reduced, the temperature will decrease by a certain amount after running for a period of time, but at this time, the second ambient temperature value has not decreased, so it can be determined that a fault has occurred. The fault here can be a fault in the temperature detection circuit detection, or a fault in the calculation of the control chip, or damage to the motor and the power supply that causes the temperature to be unable to decrease. Therefore, this implementation is actually a remedy for a fault.

[0087] It is worth noting that the present embodiment specifically describes the above steps S500 to S700. For example, when the execution time value is 1 minute, when the control chip controls the motor to reduce the speed according to the second control instruction, the control chip will record the duration of executing the second control instruction when executing the second control instruction. When the duration of the second control executed by the control chip is greater than or equal to 1 minute, the control chip will generate a fault temperature detection instruction to detect the ambient temperature of the motor again, that is, the second ambient temperature value. For example, if the detected second ambient temperature value is 90°C and the first temperature threshold is 85°C, the second ambient temperature value is greater than the first temperature threshold. At this time, the control chip will control the motor to stop running. In the present embodiment, the ambient temperature of the motor is detected at intervals to determine whether the currently executed instruction has successfully achieved the cooling effect according to the temperature difference before and after the interval time. When the cooling effect is achieved, the current instruction continues to be executed. When the cooling effect is not achieved, the motor is controlled to be turned off to ensure the safety of the electric toothbrush. It should also be noted that in this embodiment, the step-by-step control scheme provided in the above embodiment can also be combined, that is, when the second ambient temperature value detected is 90°C, the control chip will sequentially execute the next level of cooling instructions, and when executing the next level of instructions, it will again record the execution time value of the currently executed cooling instruction, and again detect the ambient temperature of the motor, that is, the third temperature value. If the detected third temperature value is greater than or equal to the first temperature threshold of 85°C, the next level of cooling instructions will be executed again until the temperature value detected according to the fault temperature detection instruction is less than the first temperature threshold. That is, the motor speed is gradually reduced in sequence to reduce the ambient temperature of the motor until it is less than the first temperature value of 85°C.

[0088] It should be noted that in this embodiment, in combination with the above embodiment, after the control chip controls the motor to reduce the speed, when the detected second temperature value is greater than or equal to the second temperature threshold, the control chip can also control the heat dissipation system to dissipate the heat of the motor or the ambient temperature of the motor.

[0089] Furthermore, the temperature detection circuit is an NTC temperature detection circuit.

[0090] In this embodiment, the temperature detection circuit is an NTC temperature detection circuit. The detection principle of the NTC temperature detection circuit is that the resistance of the NTC resistor gradually decreases as the ambient temperature increases, thereby realizing the detection of the ambient temperature of the motor. In this embodiment, compared with the PTC temperature detection circuit, the NTC temperature detection circuit uses the fact that the resistance of the resistor gradually decreases as the ambient temperature increases, while the PTC temperature detection circuit uses the fact that the resistance group increases as the ambient temperature increases. Therefore, the NTC temperature detection circuit will have better detection sensitivity as the temperature increases.

[0091] It should be noted that in this embodiment, an implementation method is also provided, which records the time when the electric toothbrush is started each time and the time when the first temperature value of the motor is greater than or equal to the first ambient temperature threshold, so as to determine the time from when the electric toothbrush is started to when the over-temperature state occurs, and generates a data model based on at least two records, so as to generate a cooling instruction in advance through the data model. Specifically, the following steps are included:

[0092] S001: When the electric toothbrush is started, the control chip will record the first moment when the electric toothbrush is started; it should be noted that the first moment recorded by the control chip includes but is not limited to a natural time value or a custom timing.

[0093] S002: The control chip compares the first ambient temperature value with the first temperature threshold in real time. When the first ambient temperature value is equal to the first temperature threshold, the control chip records the second moment. It should be noted that the second moment corresponds to the first moment. When the first moment is recorded as a natural time value, the second moment will also be recorded as a natural time value. When the first moment is recorded in a custom timing manner, the second moment is the final value of the timing.

[0094] S003: Calculate the time taken from the start of the electric toothbrush to the time when the first ambient temperature value is equal to the first temperature threshold based on the first moment and the second moment, that is, if the first moment and the second moment are recorded as natural time values, calculate the duration value by the difference between the second moment and the first moment. When the first moment and the second moment are implemented in a timing manner, the first moment is the starting value, the second moment is the end value, and the second moment is the duration value.

[0095] S004: Establishing a data model based on at least two recorded duration values. It should be noted that in this embodiment, the data model is established by using multiple recorded duration values ​​to make the established data model more stable. In some embodiments, the data model can be established based on only one recorded duration value, so that the solution can be directly implemented.

[0096] S005: Generate a cooling instruction according to the minimum duration value in the data model.

[0097] This embodiment gives a detailed example of the above implementation method, and this example is described with the first moment and the second moment recorded by the control chip as natural time values. When the electric toothbrush is started, the first moment recorded by the control chip when the electric toothbrush is started is 7:00, and the control chip compares the acquired first ambient temperature value with the first temperature threshold. For example, if the first temperature threshold is 80°C, when the acquired first ambient temperature value is 70°C, the control chip continues to compare the acquired first ambient temperature value with the first temperature threshold until the first ambient temperature value is equal to 80°C. For example, the time when the first ambient temperature value is equal to 80°C is 7:10, and the second moment is 7:10 at this time. At this time, the time calculated by step S003 from the start of the electric toothbrush to the time when the first ambient temperature value is equal to the first temperature threshold is the time value of 7:00 and 7:10, which is 10 minutes. It should be noted that when the duration value recorded for the first time is 10 minutes and the duration value recorded for the second time is 14 minutes, a cooling instruction is generated based on 10 minutes, that is, when the electric toothbrush is started, the control chip actively generates a cooling instruction after working for 10 minutes. It should be noted that the control mode of the cooling instruction here includes but is not limited to controlling the electric toothbrush to stop working, or reducing the speed of the electric toothbrush motor, or starting the cooling system to dissipate the ambient temperature of the motor.

[0098] It should be noted that this example is described again in a manner that the first moment and the second moment recorded by the control chip are used as timing. When the electric toothbrush is started, the first moment of the control chip is zero, and then timing is performed. When the first ambient temperature value is equal to the first temperature threshold, that is, equal to 80°C, the control chip times the second moment, for example, the second moment is 12 minutes, that is, the duration value is 12 minutes. It should be noted that when the duration value recorded for the first time is 12 minutes and the duration value recorded for the second time is 18 minutes, a cooling instruction is generated based on 12 minutes, that is, when the electric toothbrush is started, the control chip actively generates a cooling instruction after working for 12 minutes. It should be noted that the control mode of the cooling instruction here includes but is not limited to controlling the electric toothbrush to stop working, or reducing the speed of the electric toothbrush motor, or starting the cooling system to dissipate the ambient temperature of the motor.

[0099] It should be noted that in some embodiments, the cooling instruction can be generated based on the average duration value of multiple recorded duration values. That is, as mentioned above, when the duration value recorded for the first time is 10 minutes and the duration value recorded for the second time is 14 minutes, the average duration value is 12 minutes, that is, after the electric toothbrush is started, the control chip actively generates a cooling instruction after working for 12 minutes.

[0100] It should be noted that in some embodiments, a cooling instruction can also be generated based on the middle value of the duration values ​​recorded multiple times. That is, as mentioned above, when the duration value of the first record is 12 minutes and the duration value of the second record is 18 minutes, the middle value is 15 minutes, that is, after the electric toothbrush is started, the control chip actively generates a cooling instruction after working for 15 minutes.

[0101] It should be noted that, in some embodiments, the electric toothbrush is interconnected with a smart terminal to obtain a natural time value based on the smart terminal, and / or a timer is provided in the electric toothbrush to obtain a timing duration value through the timer.

[0102] In this embodiment, by repeatedly recording the time taken from the start of the electric toothbrush to the over-temperature state, a data model is established to predict how long it will take for the electric toothbrush to reach the over-temperature state when it is used next time, so as to perform a cooling operation in advance before reaching the over-temperature state, thereby greatly reducing the safety hazards caused by high temperature of the electric toothbrush and extending the service life of the electric toothbrush. For example, originally after the electric toothbrush is started and works for 10 minutes, the first ambient temperature value will be equal to the first time threshold, and the control chip will generate a cooling instruction to cool down the electric toothbrush. However, according to the established data model, after the electric toothbrush is started and works for 9 minutes, the control chip generates a cooling instruction in advance and performs a cooling operation on the electric toothbrush.

[0103] It should be noted that in the above embodiment, the establishment of the data model will be updated according to the usage. For example, when the number of times the electric toothbrush is used reaches a certain value, the control chip will actively re-record the first moment and the second moment and re-establish the data model. Or the data model can be re-established according to seasonal changes. This implementation method is because when the electric toothbrush is used in summer, the time it takes for the first ambient temperature value to be equal to the first temperature threshold is normally shorter than the time it takes for the first ambient temperature value to be equal to the first temperature threshold when the electric toothbrush is used in winter. In addition, the control chip can also reset the data model each time it is charged, and then record the first moment and the second moment to establish the data model; or, the data model can be established after the user actively resets it.

[0104] The present invention also provides a control system for an electric toothbrush, such as Figure 8As shown, it specifically includes a control chip, a power supply electrically connected to the control chip, a motor, a temperature detection circuit, and a heat dissipation system; wherein the power supply is used to provide current to the motor; the motor is used to drive the toothbrush head to rotate and / or vibrate; the temperature detection circuit is used to detect the ambient temperature of the motor; the heat dissipation system is used to actively dissipate the ambient temperature of the motor according to the control of the control chip; the control chip is used to control the motor to stop running or reduce the speed according to the ambient temperature, and / or control the heat dissipation system to actively dissipate the ambient temperature of the motor. The control system of this electric toothbrush is implemented by applying the control method of the electric toothbrush in the above embodiment, and will not be described in detail here, but this should not be used as a reason for insufficient disclosure.

[0105] The present invention also provides an electric toothbrush, which includes a toothbrush head, a handle shell and a control system of the electric toothbrush as provided in the above embodiment. The specific structure of the electric toothbrush refers to the above embodiment. Since the electric toothbrush adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, a cavity is provided in the handle shell, and the control system of the electric toothbrush is fixedly arranged in the cavity; the output shaft of the motor is connected to the toothbrush head.

[0106] Furthermore, the control chip is fixedly connected to the inner wall of the handle shell, and the motor corresponds to the control chip and is spaced apart; the electric toothbrush also includes a temperature sensor, which is arranged on the board surface of the control chip facing the motor and is spaced apart from the motor to detect the ambient temperature of the motor.

[0107] In the present embodiment, the control chip is fixedly connected to the inner wall of the handle shell, and the motor corresponds to the control chip and is spaced apart. The electric toothbrush also includes a temperature sensor, which is arranged on the board of the control chip facing the motor, and the temperature sensor is spaced apart from the motor to detect the ambient temperature around the motor through the temperature sensor. In the present embodiment, the temperature sensor is an NTC temperature detection circuit, and the detection principle of the NTC temperature detection circuit is that the resistance of the NTC resistor set will gradually decrease as the ambient temperature increases, thereby realizing the detection of the ambient temperature of the motor. In the present embodiment, compared with the PTC temperature detection circuit, the NTC temperature detection circuit uses the resistance of the resistor to gradually decrease as the ambient temperature increases, and the PTC temperature detection circuit uses the resistance of the resistor to increase as the ambient temperature increases. Therefore, the NTC temperature detection circuit will increase with the increase of temperature, making the detection sensitivity better.

[0108] The present invention also provides a readable storage medium, which stores a control program for an electric toothbrush. When the control program for the electric toothbrush is executed by a processor, the steps of the control method for the electric toothbrush provided in the above-mentioned embodiment are implemented.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for an electric toothbrush, characterized in that: The following steps are involved: When the electric toothbrush is working, a first ambient temperature value of the motor of the electric toothbrush is obtained based on the temperature detection circuit, and the first ambient temperature value is sent to the control chip; A first temperature threshold is preset in the control chip; The control chip records a first moment when the electric toothbrush is started; When the first ambient temperature value is greater than or equal to the first temperature threshold, the control chip records it as a second moment; Acquire, according to the first moment and the second moment, a time value when a first ambient temperature value when the electric toothbrush is started is greater than or equal to the first temperature threshold; Establishing a data model based on at least two of the duration values; Generate a cooling instruction according to the minimum duration value in the data model; The control chip reduces the ambient temperature of the motor according to the temperature reduction instruction.

2. The control method of the electric toothbrush according to claim 1, characterized in that: The step of the control chip controlling the motor to lower the ambient temperature of the motor according to the temperature reduction instruction is specifically as follows: The control chip cuts off power to the motor according to the temperature reduction instruction to control the motor to stop running.

3. The control method of the electric toothbrush according to claim 1, characterized in that: The step of the control chip lowering the ambient temperature of the motor according to the temperature reduction instruction is specifically: The control chip turns off the power supply according to the temperature reduction instruction to control the motor to stop running.

4. The control method of the electric toothbrush according to claim 1, characterized in that: The step of the control chip lowering the ambient temperature of the motor according to the temperature reduction instruction is specifically as follows: The control chip reduces the power to the motor according to the temperature reduction instruction, so as to control the motor to run at a lower speed.

5. The control method of the electric toothbrush according to claim 4, characterized in that: The step of the control chip lowering the ambient temperature of the motor according to the temperature reduction instruction is specifically: The control chip controls the heat dissipation system to dissipate the ambient temperature of the motor according to the temperature reduction instruction.

6. The control method of an electric toothbrush according to any one of claims 1 to 5, characterized in that: The temperature detection circuit is an NTC temperature detection circuit.

7. A control system for an electric toothbrush, characterized in that: It includes a control chip, a power supply electrically connected to the control chip, a motor, a temperature detection circuit, and a heat dissipation system; wherein, The power supply is used to provide current to the motor; The motor is used to drive the toothbrush head to rotate and / or vibrate; The temperature detection circuit is used to detect the ambient temperature of the motor; The control chip is used to record a first moment when the electric toothbrush is started and a second moment when the ambient temperature is greater than or equal to a first temperature threshold, and obtain a duration value based on the first moment and the second moment. After establishing a data model based on at least two of the duration values, a cooling instruction is generated based on the minimum duration value in the data model. The control chip controls the motor to stop running or reduce the speed according to the cooling instruction, and / or controls the heat dissipation system to dissipate the ambient temperature of the motor.

8. An electric toothbrush, characterized in that: It comprises a toothbrush head, a handle shell and a control system of the electric toothbrush as claimed in claim 7; A cavity is provided in the handle shell, and the control system of the electric toothbrush is fixedly arranged in the cavity; and the output shaft of the motor is connected to the toothbrush head.

9. The electric toothbrush according to claim 8, characterized in that: The control chip is fixedly connected to the inner wall of the handle shell, and the motor corresponds to the control chip and is spaced apart from the motor; the electric toothbrush also includes a temperature sensor, which is arranged on the board surface of the control chip facing the motor and is spaced apart from the motor to detect the ambient temperature of the motor.

10. A readable storage medium storing a control program for an electric toothbrush, wherein the control program for the electric toothbrush, when executed by a processor, implements the steps of the control method for an electric toothbrush according to any one of claims 1 to 6.

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