CN108209572A - Heating control method and electric kettle - Google Patents
Heating control method and electric kettle Download PDFInfo
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- CN108209572A CN108209572A CN201711266402.6A CN201711266402A CN108209572A CN 108209572 A CN108209572 A CN 108209572A CN 201711266402 A CN201711266402 A CN 201711266402A CN 108209572 A CN108209572 A CN 108209572A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 230000006698 induction Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000004321 preservation Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21166—Constructional details or accessories
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Abstract
The invention provides a heating control method and an electric kettle. The heating control method is applied to the electric kettle, the electric kettle comprises a controller and a kettle body used for containing liquid, a first capacitive sensor and a second capacitive sensor are arranged on the side wall of the kettle body in an insulating mode, the height of the first capacitive sensor is lower than that of the second capacitive sensor, the first capacitive sensor and the second capacitive sensor are both electrically connected with the controller, and the heating control method comprises the following steps: a first induction signal value is obtained through a first capacitive sensor, and a second induction signal value is obtained through a second capacitive sensor; and controlling whether the electric kettle is heated or not according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value. The heating control method provided by the invention improves the accuracy of heating control of the electric kettle and improves the performance of preventing the electric kettle from being dried or overflowing.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a heating control method and an electric kettle.
Background
The electric kettle is convenient to use and high in heating speed, and is widely applied. With the increasing functions and types of electric kettles, such as electromagnetic heating electric kettles, health preserving kettles, and the like, in order to prevent the electric kettle from being dried or overflowing during heating, the water level in the electric kettle needs to be detected, and then the heating of the electric kettle is controlled.
At present, a single-point capacitance mode is generally adopted to detect the liquid level. Namely, a capacitance type detection sensor is arranged at a liquid level detection point on the kettle, and an induction signal value obtained by the capacitance type detection sensor is compared with a reference value so as to determine the liquid level in the electric kettle, whether dry heating or overflow occurs or not, and thus the heating of the electric kettle is controlled.
However, the difference of the reference values will cause inaccurate judgment of determining whether dry heating or overflow occurs, and further cause inaccurate heating control according to the judgment result, thereby reducing the dry heating or overflow prevention performance of the electric kettle.
Disclosure of Invention
In order to solve at least one problem mentioned in the background art, the invention provides a heating control method and an electric kettle, wherein the accuracy of the heating control of the electric kettle is improved by respectively arranging a capacitive sensor at two positions with different heights on the side wall of the kettle body of the electric kettle.
In order to achieve the above object, the present invention provides a heating control method applied to an electric kettle, where the electric kettle includes a controller and a kettle body for containing liquid, a first capacitive sensor and a second capacitive sensor are arranged on a side wall of the kettle body in an insulating manner, a height of the first capacitive sensor is lower than a height of the second capacitive sensor, and both the first capacitive sensor and the second capacitive sensor are electrically connected to the controller, the method includes: a first induction signal value is obtained through a first capacitive sensor, and a second induction signal value is obtained through a second capacitive sensor; and controlling whether the electric kettle is heated or not according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value.
According to the heating control method, the two capacitive sensors are respectively arranged at two positions with different heights on the side wall of the electric kettle body, and the induction signal values respectively detected by the two capacitive sensors can reflect the influence of liquid in the kettle body at different liquid levels on the induction signal values. The absolute value of the difference between the induction signal values detected by the two capacitive sensors can determine whether the electric kettle is dry-boiled or overflowed, so that the accuracy of heating control of the electric kettle is improved, and the performance of preventing the electric kettle from being dry-boiled or overflowed is improved.
In an embodiment of the present invention, the controlling whether the electric kettle is heated according to an absolute value of a difference between the second sensing signal value and the first sensing signal value includes: judging whether the absolute value is smaller than or equal to a preset threshold value; and if the absolute value is less than or equal to the preset threshold value, controlling the electric kettle not to heat.
In an embodiment of the present invention, the method further includes: and controlling to send out an alarm signal.
In an embodiment of the present invention, the method further includes: and if the absolute value is larger than the preset threshold value, controlling the electric kettle to heat.
In an embodiment of the present invention, if the electric kettle is in the standby mode, before the obtaining the first sensing signal value by the first capacitive sensor and the obtaining the second sensing signal value by the second capacitive sensor, the method further includes: a first heating instruction input by a user is received.
In an embodiment of the present invention, if the electric kettle is in the heat preservation mode, before the obtaining the first sensing signal value by the first capacitive sensor and the obtaining the second sensing signal value by the second capacitive sensor, the method further includes: a second heating instruction is obtained.
In an embodiment of the present invention, the obtaining the second heating instruction includes: acquiring the second heating instruction input by a user; or the second heating instruction is obtained when the temperature of the liquid in the kettle body is detected to be lower than the preset temperature.
In an embodiment of the present invention, if the electric kettle is in a heating mode, the obtaining a first sensing signal value by a first capacitive sensor and obtaining a second sensing signal value by a second capacitive sensor includes: obtaining a first induction signal value through the first capacitive sensor according to a preset period, and obtaining a second induction signal value through the second capacitive sensor according to the preset period; the controlling whether the electric kettle is heated according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value comprises the following steps: and controlling whether the electric kettle is heated or not according to the preset period and the absolute value of the difference value between the second induction signal value and the first induction signal value.
The invention also provides an electric kettle, which comprises a controller and a kettle body for containing liquid, wherein the side wall of the kettle body is provided with a first capacitive sensor and a second capacitive sensor in an insulating way, the height of the first capacitive sensor is lower than that of the second capacitive sensor, and the first capacitive sensor and the second capacitive sensor are both electrically connected with the controller; the controller is used for executing the heating control method provided by any embodiment of the invention.
In an embodiment of the invention, the kettle further comprises a hollow bottom cover, the bottom cover is arranged at the bottom of the kettle body, and the controller is arranged in the bottom cover.
In an embodiment of the invention, the device further comprises a hollow base and a hollow bottom cover; the bottom cover is arranged at the bottom of the kettle body, a first electric connector is arranged at the bottom of the bottom cover, and the first capacitive sensor and the second capacitive sensor are both electrically connected with the first electric connector; the base is provided with a second electric connector matched with the first electric connector, the controller is arranged in the base, and the controller is electrically connected with the second electric connector.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a heating control method according to an embodiment of the present invention;
fig. 2 is a flowchart of a heating control method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric kettle according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims and drawings of the present application, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate.
The invention provides a heating control method and an electric kettle, and aims to solve the technical problem that the electric kettle is poor in dry burning prevention or overflow prevention performance due to the fact that a reference value is inaccurate when a liquid level is detected by a single-point capacitor in the prior art. The present invention is not limited to the type of electric kettle, and may be, for example, an electric heating kettle or a health preserving kettle.
Fig. 1 is a flowchart of a heating control method according to an embodiment of the present invention. The heating control method provided by the embodiment can be applied to an electric kettle. The electric kettle can comprise a controller and a kettle body used for containing liquid, a first capacitive sensor and a second capacitive sensor are arranged on the side wall of the kettle body in an insulating mode, the height of the first capacitive sensor is lower than that of the second capacitive sensor, and the first capacitive sensor and the second capacitive sensor are both electrically connected with the controller. In the heating control method provided by this embodiment, the execution main body may be a controller in an electric kettle. As shown in fig. 1, the heating control method provided in this embodiment may include:
s101, a first induction signal value is obtained through the first capacitive sensor, and a second induction signal value is obtained through the second capacitive sensor.
S102, controlling whether the electric kettle is heated or not according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value.
Specifically, a first capacitive sensor and a second capacitive sensor are arranged on the side wall of the kettle body of the electric kettle in an insulating manner. The first capacitive sensor and the second capacitive sensor are arranged at different heights, and the first capacitive sensor is positioned below the second capacitive sensor.
When the liquid level of the liquid in the kettle body is different, the first capacitive sensor can detect the change of the sensing signal value at the position of the first capacitive sensor, and the second capacitive sensor can detect the change of the sensing signal value at the position of the second capacitive sensor. For example, when there is no water in the kettle body, or there is water in the kettle body but the water level is lower than the position of the first capacitive sensor, the first capacitive sensor and the second capacitive sensor are in similar environments and do not contact water. At this time, the first sensing signal value detected by the first capacitive sensor and the second sensing signal value detected by the second capacitive sensor will be substantially the same. When water is in the kettle body and the water level is higher than the position of the second capacitive sensor, the first capacitive sensor and the second capacitive sensor are in similar environments and are in contact with the water. At this time, the first sensing signal value detected by the first capacitive sensor and the second sensing signal value detected by the second capacitive sensor will be substantially the same. When water is in the kettle body, the water level is lower than the position of the second capacitive sensor, and the water level is higher than the position of the first capacitive sensor, the first capacitive sensor and the second capacitive sensor are in different environments. The first capacitive sensor is in contact with water and the second capacitive sensor is not in contact with water. At this time, the first sensing signal value detected by the first capacitive sensor and the second sensing signal value detected by the second capacitive sensor will be different.
The controller obtains a first induction signal value through the first capacitive sensor and obtains a second induction signal value through the second capacitive sensor. Furthermore, the controller can judge whether the electric kettle overflows or is dry-boiled currently according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value, so as to control whether the electric kettle is heated.
Therefore, according to the heating control method provided by the embodiment, the two capacitive sensors are respectively arranged at two positions with different heights on the side wall of the electric kettle body, and the sensing signal values respectively detected by the two capacitive sensors can reflect the influence of liquid in the kettle body on the sensing signal values when the liquid is at different liquid levels. The absolute value of the difference between the induction signal values detected by the two capacitive sensors can determine whether the electric kettle is dry-boiled or overflowed, so that whether the electric kettle is heated or not is controlled, the accuracy of heating control of the electric kettle is improved, and the performance of preventing the electric kettle from being dry-boiled or overflowed is improved.
It should be noted that, in this embodiment, specific installation positions of the first capacitive sensor and the second capacitive sensor on the lateral wall of the kettle body are not limited, and the first capacitive sensor and the second capacitive sensor are installed as needed. In order to improve the dry heating prevention performance of the electric kettle, the first capacitive sensor can be arranged at the lowest position of the liquid level in the kettle body when the dry heating is prevented. In order to improve the anti-overflow performance of the electric kettle, the second capacitive sensor can be arranged at the highest position of the liquid level in the kettle body when the anti-overflow occurs.
Optionally, S102, controlling whether the electric kettle is heated according to an absolute value of a difference between the second sensing signal value and the first sensing signal value, may include:
and judging whether the absolute value is less than or equal to a preset threshold value.
And if the absolute value is less than or equal to the preset threshold value, controlling the electric kettle not to heat.
And if the absolute value is larger than the preset threshold value, controlling the electric kettle to heat.
Specifically, if the absolute value of the difference between the second sensing signal value and the first sensing signal value is smaller than or equal to the preset threshold, it indicates that the difference between the second sensing signal value and the first sensing signal value is very small, and the environments of the second capacitive sensor and the first capacitive sensor are substantially similar. At this time, neither the first capacitive sensor nor the second capacitive sensor may be in contact with the liquid in the kettle, i.e. there is no liquid in the kettle or the level of the liquid in the kettle is lower than the level of the first capacitive sensor. The electric kettle has been or will be dry-boiled. Alternatively, both the first capacitive sensor and the second capacitive sensor may be in contact with the liquid in the kettle, i.e. the level of the liquid in the kettle is higher than the level of the second capacitive sensor. The electric kettle has overflowed or about to overflow. Therefore, when the absolute value is smaller than or equal to the preset threshold, the electric kettle needs to be controlled not to be heated so as to avoid dry heating or overflow of the electric kettle.
If the absolute value of the difference between the second sensing signal value and the first sensing signal value is larger than the preset threshold, the difference between the second sensing signal value and the first sensing signal value is large, and the environment of the second capacitive sensor is different from the environment of the first capacitive sensor. At this time, the first capacitive sensor is in contact with the liquid in the kettle body, and the second capacitive sensor is not in contact with the liquid in the kettle body. Namely, the liquid level of the liquid in the kettle body is higher than the height of the position of the first capacitive sensor and lower than the height of the position of the second capacitive sensor. The liquid level is normal, and the electric kettle can not overflow or dry-boil, can control electric kettle heating.
It should be noted that, in this embodiment, specific values of the preset threshold are not limited, and are set as needed.
Optionally, in the heating control method provided in this embodiment, if the absolute value of the difference between the second sensing signal value and the first sensing signal value is less than or equal to the preset threshold, the method may further include:
and controlling to send out an alarm signal.
By sending the alarm signal, the electric kettle can remind a user that the electric kettle is likely to be dry-boiled or overflow, so that the user can take certain treatment measures, and the safety of the electric kettle is improved.
It should be noted that, the implementation manner of the alarm signal is not limited in this embodiment. For example, an indicator light on the electric kettle can be controlled to illuminate. For another example, if the electric kettle comprises an audio module which can emit an alert sound, the audio module can be controlled to emit the alert sound.
In this embodiment, the electric kettle can be operated in various states. Such as a standby mode, a keep warm mode, and a heating mode.
Optionally, if the electric kettle is in the standby mode, before obtaining the first sensing signal value through the first capacitive sensor and obtaining the second sensing signal value through the second capacitive sensor, the method may further include:
a first heating instruction input by a user is received.
Wherein the first heating instruction is used for starting a heating function of the electric kettle. The first heating instruction input by the user may have different implementations according to different types or structures of the electric kettle. For example, if a toggle heating switch is disposed on the electric kettle, a first heating command may be input when a user toggles the heating switch.
Optionally, if the electric kettle is in the heat preservation mode, before obtaining the first sensing signal value through the first capacitive sensor and the second sensing signal value through the second capacitive sensor, the method may further include:
a second heating instruction is obtained.
Wherein the second heating instruction is used for starting the heating function of the electric kettle.
Optionally, obtaining the second heating instruction may include:
and acquiring a second heating instruction input by the user. Or acquiring a second heating instruction when the temperature of the liquid in the kettle body is detected to be lower than the preset temperature.
Specifically, the second heating instruction may be input by a user, or may be generated when the controller detects that the temperature of the liquid in the electric kettle body is lower than a preset temperature. The specific value of the preset temperature is not limited in this embodiment, and is set as required.
Optionally, if the electric kettle is in a heating mode, S101, obtaining a first sensing signal value through the first capacitive sensor, and obtaining a second sensing signal value through the second capacitive sensor may include:
and obtaining a first induction signal value through the first capacitive sensor according to a preset period, and obtaining a second induction signal value through the second capacitive sensor according to the preset period.
S102, controlling whether the electric kettle is heated according to an absolute value of a difference between the second sensing signal value and the first sensing signal value, may include:
and controlling whether the electric kettle is heated or not according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value according to a preset period.
Specifically, through setting up the preset cycle, during electric kettle heating, can regularly confirm whether electric kettle exists and overflows or dry combustion method risk, promoted electric kettle's anti-overflow or dry combustion method performance.
The specific value of the preset period is not limited in this embodiment, and is set as required.
The embodiment provides a heating control method, which comprises the following steps: the first capacitance type sensor is used for obtaining a first induction signal value, the second capacitance type sensor is used for obtaining a second induction signal value, and whether the electric kettle is heated or not is controlled according to the absolute value of the difference value between the second induction signal value and the first induction signal value. According to the heating control method provided by the embodiment, the capacitive sensors are respectively arranged at two different height positions on the side wall of the electric kettle body, so that the accuracy of heating control of the electric kettle is improved, and the performance of preventing the electric kettle from being dried or overflowing is improved.
Fig. 2 is a flowchart of a heating control method according to a second embodiment of the present invention. The present embodiment provides a heating control method for an electric kettle in different operation modes based on the first embodiment shown in fig. 1. As shown in fig. 2, the heating control method provided in this embodiment may include:
s201, the electric kettle is in a standby mode.
S202, whether a first heating instruction input by a user is received or not is judged.
And executing S203-S204 if the first heating instruction input by the user is received. If the first heating instruction input by the user is not received, the step returns to the step S201, and the electric kettle is in a standby mode.
S203, a first induction signal value is obtained through the first capacitive sensor, and a second induction signal value is obtained through the second capacitive sensor.
S204, judging whether the absolute value of the difference value between the second sensing signal value and the first sensing signal value is smaller than or equal to a preset threshold value.
If the absolute value is less than or equal to the preset threshold, S205 is performed. If the absolute value is greater than the preset threshold, S206 is performed.
S205, controlling the electric kettle not to be heated.
After that, returning to S201, the electric kettle is in a standby mode.
S206, controlling the electric kettle to heat.
After that, S207 is executed.
And S207, the electric kettle is in a heating mode.
S203 to S207 are repeatedly executed. Until any of the following conditions is satisfied. In the first case, the absolute value of the difference value between the second sensing signal value and the first sensing signal value is smaller than or equal to the preset threshold value, the electric kettle overflows or is dried, the electric kettle is controlled not to be heated, S201 is returned, and the electric kettle is in a standby mode. And in the second situation, when the liquid in the electric kettle body reaches the preset temperature, the electric kettle stops heating and returns to the S201 from the heating mode, and the electric kettle is in the standby mode. And in the second situation, when the liquid in the electric kettle body reaches the preset temperature, the electric kettle stops heating, the heating mode is switched to S208, and the electric kettle is in the heat preservation mode.
S208, the electric kettle is in a heat preservation mode.
After that, S209 is executed.
And S209, whether a second heating instruction is received.
If the second heating instruction is received, S203 is executed. If the second heating instruction is not received, the step returns to the step S208, and the electric kettle is in the heat preservation mode.
The heating control method provided by the embodiment can improve the accuracy of heating control of the electric kettle, and further improves the performance of preventing the electric kettle from being dried or overflowing.
Fig. 3 is a schematic structural diagram of an electric kettle according to a first embodiment of the present invention. As shown in fig. 3, the electric kettle provided in this embodiment may include: a controller 11 and a pot 12 for holding liquid.
Wherein, a first capacitive sensor 13 and a second capacitive sensor 14 are arranged on the side wall of the kettle body 12 in an insulating manner, the height of the first capacitive sensor 13 is lower than that of the second capacitive sensor 14, and both the first capacitive sensor 13 and the second capacitive sensor 14 are electrically connected with the controller 11.
The controller 11 may be used to execute the heating control method provided in any one of the embodiments of fig. 1 to 2.
In this embodiment, implementation manners of the first capacitive sensor 13 and the second capacitive sensor 14 are not limited. For example, any type and style of capacitive sensor may be present. Alternatively, the capacitance sensing function may be realized by a member having a capacitance sensing function such as a metal plate.
In this embodiment, the implementation manner of the controller 11 is not limited. For example, a chip, a circuit board including a chip, etc.
In this embodiment, the type, shape and material of the electric kettle are not limited. For example, as shown in fig. 3, the electric kettle may be a split structure including the base 22 and the kettle body 12. The kettle body 12 may be made of metal or ceramic. Optionally, the electric kettle can also be of an integrated structure.
In this embodiment, other components included in the electric kettle are not limited. Illustratively, as shown in fig. 3, the electric kettle may further include a lid 15, a handle 16, a heating device 17, an alarm device (not shown), and the like. Wherein, the pot lid 15 and the pot body 12 can be in a connecting structure or an independent structure. The heating means 17 can be located at the bottom of the kettle body 12. The heating means 17 may be resistive heating means, or heating means realized by electromagnetic effect, etc. The alarm device can be an indicator light, or an audio module which can give out prompt sound, and the like.
In the present embodiment, the implementation manner of electrically connecting the first capacitive sensor 13 and the second capacitive sensor 14 with the controller 11 is not limited, and is different according to different structures of the electric kettle and different positions of the controller in the electric kettle.
Optionally, the electric kettle provided in this embodiment may further include a hollow bottom cover, the bottom cover is disposed at the bottom of the kettle body 12, and the controller 11 is disposed in the bottom cover.
In this kind of implementation, the below of the kettle body is provided with the bottom, and bottom inside is provided with the controller. The first capacitive sensor and the second capacitive sensor are arranged on the side wall of the kettle body. The first capacitive sensor and the second capacitive sensor are electrically connected to the controller, for example by wires.
Optionally, as shown in fig. 3, the electric kettle provided in this embodiment may further include a hollow base 22 and a hollow bottom cover 21.
The bottom cover 21 is arranged at the bottom of the kettle body 12, a first electrical connector 23 is arranged at the bottom of the bottom cover 21, and the first capacitive sensor 13 and the second capacitive sensor 14 are both electrically connected with the first electrical connector 23.
The base 22 is provided with a second electrical connector 24 matching the first electrical connector 23, the controller 11 is provided in the base 22, and the controller 11 is electrically connected to the second electrical connector 24.
In this implementation, a bottom cover 21 is provided beneath the kettle body 12, the bottom cover 21 and kettle body 12 being placed together on a base 22. The controller 11 is provided inside the base 22. The first capacitive sensor 13 and the second capacitive sensor 14 are each electrically connected to a first electrical connector 23 on the bottom cover 21, for example by means of a lead 31 provided in the handle 16. The controller 11 is electrically connected to a second electrical connector 24 on the base 22. Thus, when the kettle body 12 is placed on the base 22, the first electrical connector 23 is connected with the second electrical connector 24 in a matching manner, and the first capacitive sensor 13 and the second capacitive sensor 14 are electrically connected with the controller 11 through the first electrical connector 23 and the second electrical connector 24.
It should be noted that the shape and implementation of the first electrical connector 23 and the second electrical connector 24 are not limited in this embodiment.
The electric kettle provided by the embodiment is used for executing the heating control method provided by any one of the method embodiments in fig. 1 to 2, and the technical principle and the technical effect are similar, and are not described again here.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A heating control method is applied to an electric kettle, the electric kettle comprises a controller and a kettle body for containing liquid, a first capacitive sensor and a second capacitive sensor are arranged on the side wall of the kettle body in an insulating mode, the height of the first capacitive sensor is lower than that of the second capacitive sensor, and the first capacitive sensor and the second capacitive sensor are both electrically connected with the controller, and the method comprises the following steps:
a first induction signal value is obtained through a first capacitive sensor, and a second induction signal value is obtained through a second capacitive sensor;
and controlling whether the electric kettle is heated or not according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value.
2. The method of claim 1, wherein said controlling whether the electric kettle heats based on an absolute value of a difference between the second sensing signal value and the first sensing signal value comprises:
judging whether the absolute value is smaller than or equal to a preset threshold value;
and if the absolute value is less than or equal to the preset threshold value, controlling the electric kettle not to heat.
3. The method of claim 2, further comprising:
and controlling to send out an alarm signal.
4. The method of claim 2, further comprising:
and if the absolute value is larger than the preset threshold value, controlling the electric kettle to heat.
5. The method as claimed in any one of claims 1 to 4, wherein if the electric kettle is in the standby mode, before obtaining the first sensing signal value by the first capacitive sensor and the second sensing signal value by the second capacitive sensor, the method further comprises:
a first heating instruction input by a user is received.
6. The method as claimed in any one of claims 1 to 4, wherein if the electric kettle is in the keep warm mode, before obtaining the first sensing signal value by the first capacitive sensor and the second sensing signal value by the second capacitive sensor, the method further comprises:
a second heating instruction is obtained.
7. The method of claim 6, wherein said obtaining a second heating instruction comprises:
acquiring the second heating instruction input by a user; or,
and acquiring the second heating instruction when the temperature of the liquid in the kettle body is detected to be lower than the preset temperature.
8. A method according to any one of claims 1 to 4, wherein, if the electric kettle is in heating mode,
the obtaining a first sensing signal value through a first capacitive sensor and a second sensing signal value through a second capacitive sensor includes:
obtaining a first induction signal value through the first capacitive sensor according to a preset period, and obtaining a second induction signal value through the second capacitive sensor according to the preset period;
the controlling whether the electric kettle is heated according to the absolute value of the difference value between the second sensing signal value and the first sensing signal value comprises the following steps:
and controlling whether the electric kettle is heated or not according to the preset period and the absolute value of the difference value between the second induction signal value and the first induction signal value.
9. An electric kettle comprises a controller and a kettle body used for containing liquid, and is characterized in that a first capacitive sensor and a second capacitive sensor are arranged on the side wall of the kettle body in an insulating mode, the height of the first capacitive sensor is lower than that of the second capacitive sensor, and the first capacitive sensor and the second capacitive sensor are both electrically connected with the controller;
the controller is configured to execute the heating control method according to any one of claims 1 to 8.
10. An electric kettle as claimed in claim 9, further comprising a hollow bottom cover, the bottom cover being disposed at the bottom of the kettle body, the controller being disposed in the bottom cover;
or, the device also comprises a hollow base and a hollow bottom cover;
the bottom cover is arranged at the bottom of the kettle body, a first electric connector is arranged at the bottom of the bottom cover, and the first capacitive sensor and the second capacitive sensor are both electrically connected with the first electric connector;
the base is provided with a second electric connector matched with the first electric connector, the controller is arranged in the base, and the controller is electrically connected with the second electric connector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711266402.6A CN108209572A (en) | 2017-12-05 | 2017-12-05 | Heating control method and electric kettle |
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| CN201711266402.6A CN108209572A (en) | 2017-12-05 | 2017-12-05 | Heating control method and electric kettle |
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