CN109425407B - Liquid overflow detection method and device, pot, heating device and heating assembly - Google Patents
Liquid overflow detection method and device, pot, heating device and heating assembly Download PDFInfo
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- CN109425407B CN109425407B CN201810265935.0A CN201810265935A CN109425407B CN 109425407 B CN109425407 B CN 109425407B CN 201810265935 A CN201810265935 A CN 201810265935A CN 109425407 B CN109425407 B CN 109425407B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/268—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes
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- General Physics & Mathematics (AREA)
- Cookers (AREA)
Abstract
The invention provides a liquid overflow detection method, a liquid overflow detection device, a pot, a heating device and a heating assembly, wherein the liquid overflow detection method comprises the following steps: detecting a current signal output by a capacitance liquid level sensor in the process of heating liquid; and judging whether the liquid is in a state to be overflowed or not according to the variation trend of the current signal. The liquid overflow detection method provided by the invention can accurately and effectively detect the liquid overflow state.
Description
Technical Field
The invention relates to the technical field of intelligent household appliances, in particular to a liquid overflow detection method and device, a cooker, a heating device and a heating assembly.
Background
The induction cooker is widely used as an efficient energy-saving kitchen ware, has more and more abundant cooking functions, and can be used for boiling water, cooking porridge, cooking soup and the like. However, there are still some inconveniences during the specific use. For example, when an electromagnetic oven is used for cooking porridge or soup, a phenomenon of overflowing occurs frequently, which not only wastes soup and porridge, but also causes a safety accident such as damage or fire of the electromagnetic oven because the electromagnetic oven is difficult to clean after overflowing.
Disclosure of Invention
The invention provides a liquid overflow detection method, a liquid overflow detection device, a pot, a heating device and a heating assembly, aiming at the defects in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, the present invention provides a liquid overflow detection method, including:
detecting a current signal output by a capacitance liquid level sensor in the process of heating liquid;
judging whether the liquid is in a state to be overflowed or not according to the variation trend of the current signal;
wherein the capacitive liquid level sensor is arranged on an outer side wall of a container for containing liquid.
Further, the determining whether the liquid is in the state to be overflowed according to the variation trend of the current signal includes:
generating a current change curve according to the current signal;
and judging whether the current change curve meets a preset condition, if so, judging that the liquid is in a state of waiting for overflowing.
Further, the determining whether the current variation curve meets a preset condition includes:
judging whether the current change curve is matched with an overflow interval in a pre-acquired standard overflow signal curve, wherein the standard overflow signal curve is used for displaying the corresponding relation between the value of the current signal output by the capacitive liquid level sensor and the heating time, and the overflow interval is marked in the standard overflow signal curve;
and if so, determining that the liquid enters a to-be-overflowed state.
Further, the determining whether the current variation curve meets a preset condition includes:
and judging whether the current values of the current change curve in a time period of a preset length with the current moment as the end moment exceed a first threshold value, and if so, determining that the liquid enters a to-be-overflowed state.
Further, the current variation curve is a curve generated according to a current signal from the identification starting time to the current time.
Further, the identification starting time is a time when heating is started, or a time when a first time period elapses since heating is started, or a time when the current signal satisfies the identification starting condition.
Further, the liquid overflow detection method further comprises:
and when the liquid is judged to be in the state of waiting for overflowing, sending an anti-overflow instruction to a heating device for heating the liquid, so that the heating device changes the heating power of the container according to the anti-overflow instruction.
Further, the capacitive liquid level sensor is disposed on an exterior sidewall proximate the top of the container.
Further, the capacitive liquid level sensor is disposed on an outer sidewall proximate the bottom of the container.
In a second aspect, the present invention also provides a liquid overflow detecting device, including:
the current signal detection module is used for detecting a current signal output by the capacitance liquid level sensor in the process of heating liquid;
the to-be-overflowed state judging module is used for judging whether the liquid is in the to-be-overflowed state or not according to the change trend of the current signal;
wherein the capacitive liquid level sensor is arranged on an outer side wall of a container for containing liquid.
Further, the to-be-overflowed state determination module is specifically configured to: generating a current change curve according to the current signal;
and judging whether the current change curve meets a preset condition, if so, judging that the liquid is in a state of waiting for overflowing.
Further, when the to-be-overflowed state determination module determines whether the current variation curve meets a preset condition, the to-be-overflowed state determination module is specifically configured to:
judging whether the current change curve is matched with an overflow interval in a pre-acquired standard overflow signal curve, wherein the standard overflow signal curve is used for displaying the corresponding relation between the value of the current signal output by the capacitive liquid level sensor and the heating time, and the overflow interval is marked in the standard overflow signal curve;
and if so, determining that the liquid enters a to-be-overflowed state.
Further, when the to-be-overflowed state determination module determines whether the current variation curve meets a preset condition, the to-be-overflowed state determination module is specifically configured to:
and judging whether the current values of the current change curve in a time period of a preset length with the current moment as the end moment exceed a first threshold value, and if so, determining that the liquid enters a to-be-overflowed state.
Further, the liquid overflow detecting device further includes: a sending module;
the sending module is used for sending an anti-overflow instruction to a heating device for heating the liquid when the to-be-overflowed state judging module judges that the liquid is in the to-be-overflowed state, so that the heating device changes the heating power of the container according to the anti-overflow instruction.
In a third aspect, the present invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the liquid overflow detection method as described above when executing the program.
In a fourth aspect, the invention also provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the liquid overflow detection method as described above.
In a fifth aspect, the invention further provides a pot, wherein the pot is provided with a capacitance liquid level sensor and the liquid overflow detection device;
wherein the capacitive liquid level sensor is arranged on an outer side wall of a container for containing liquid.
Further, the pan includes the pot body, and is corresponding, liquid spills over detection device and sets up on the outer wall of the pot body.
Further, the pan includes the pot body and pot cover, and is corresponding, liquid spills over detection device and sets up on the pot cover.
In a sixth aspect, the present invention also provides a heating apparatus, comprising: a receiving unit and a control unit;
the receiving unit is used for receiving the anti-overflow instruction sent by the liquid overflow detection device;
and the control unit is used for changing the heating power of the heating device according to the anti-overflow instruction.
Further, the heating device comprises one or more of an induction cooker, a gas stove and an electric heating sheet.
In a seventh aspect, the present invention also provides a heating assembly, comprising: a heating device as described above, and a liquid overflow detecting device as described above.
According to the technical scheme, whether the liquid is in the state to be overflowed or not is judged according to the change trend of the current signal output by the capacitance liquid level sensor in the liquid heating process, and the overflow state detection accuracy can be effectively improved compared with a single-value judgment mode. In addition, through selecting for use electric capacity level sensor as signal detection device, effectively reduced cost and hardware complexity, strengthened the reliability. Therefore, the liquid overflow detection method provided by the invention can automatically identify the boiling or overflow state of the heated liquid, thereby improving the safety of the stove, and the liquid overflow detection method can be applied to various kitchen utensils with heating functions and has wide application range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 flow chart of a method for detecting liquid overflow according to an embodiment of the present invention;
FIG. 2 is another flow chart of a liquid overflow detection method according to an embodiment of the present invention;
FIG. 3 is a standard overflow signal curve;
fig. 4a is a first current curve generated in real time from a current signal during heating of a liquid;
fig. 4b is a second current variation curve generated in real time from the current signal during heating of the liquid;
fig. 4c is a third current curve generated in real time from the current signal during heating of the liquid;
FIG. 5 is a flowchart illustrating a method for detecting liquid overflow according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a liquid overflow detection device according to a second embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a liquid overflow detection device according to a second embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a liquid overflow detection device according to a second embodiment of the present invention;
fig. 9 is a schematic structural view of a cookware provided by the third embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a heating apparatus according to a fourth embodiment of the present invention;
fig. 11 is a schematic structural diagram of a heating assembly according to a fifth embodiment of the present invention;
fig. 12 is a schematic structural diagram of an electronic device according to a sixth embodiment of the present invention;
wherein the meaning of each reference numeral in fig. 9 and 11 is as follows: 1 denotes a capacitive level sensor, 2 denotes a liquid overflow detection device, 3 denotes a heating device, and 4 denotes a heating container.
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 invention provides a liquid overflow detection method, a liquid overflow detection device, a pot, a heating device and a heating assembly, and aims to solve the problems in the prior art. It can be understood that the liquid overflow detection method according to the embodiment of the present invention is applicable to various cookers and heating devices for heating the cookers, wherein the heating devices particularly refer to induction cookers, electric kettles, and the like, and is also applicable to cooking appliances in which the cookers and the heating devices are integrated and disposed in a single body, such as electric woks and the like; when the cooking utensil with the heating function is used for boiling water, cooking soup, cooking porridge and the like, a vessel filled with liquid is placed on the cooking utensil for heating, and the heated liquid comprises water, oil, soup or other liquid substances. The process that the liquid is heated to boiling in the vessel is a process that the liquid is gradually changed into gas, and in the process of heating the liquid, liquid drops which are continuously close to a heating source are vaporized to form bubbles which rise in water. Usually, during the heating process of the liquid, a plurality of small liquid drops are vaporized to form small liquid bubbles which rise and break. When the liquid boils, a large number of liquid droplets are vaporized, and large bubbles are formed and rise and break. The formation, rise and collapse of these bubbles cause liquid level changes that can be detected by sensors and corresponding electrical signals can be generated based on the liquid level changes. The liquid overflow detection method provided by the invention can accurately and effectively detect the liquid overflow state, so that the liquid overflow can be prevented, the safety risk can be avoided, and the use experience of a user is improved. The present invention will be explained in detail by way of examples.
An embodiment of the present invention provides a liquid overflow detection method, which specifically includes the following steps, with reference to fig. 1:
step 101: during the process of heating the liquid, the current signal output by the capacitance liquid level sensor is detected.
In this step, the capacitive liquid level sensor is disposed on an outer sidewall of a container for containing liquid. For example, it may be provided on the outside wall near the top of the container, or it may be provided on the outside wall near the bottom of the container. It can be understood that the positions of the capacitive liquid level sensors are different, and the output current values or current value intervals in the corresponding overflow states are different. For example, to facilitate securing the capacitive liquid level sensor, the capacitive liquid level sensor may be disposed near an anchor of the container handle.
It should be noted that, if the container for containing the liquid is a metal container, insulation treatment is required between the container and the capacitive liquid level sensor.
It will be appreciated that when the liquid in the container is boiled and the steam escapes from the container, as soap bubbles are blown, bubbles with higher surface tension and less breakage are blown, and as the steam increases, the bubbles gather more and more, the liquid level in the container will gradually rise, and as they rise to the edge of the container, they will overflow from the container. Because the soup or porridge water in the container contains a large amount of protein and starch, the conductivity of the soup or porridge water is high, when bubbles overflowing outwards contact the capacitance liquid level sensor, the capacitance liquid level sensor can detect the rising height of the liquid level and output a liquid level signal in the form of current. Generally speaking, a capacitance liquid level sensor outputs a larger current value, which indicates that the liquid level is higher, and when the output current value is larger than a preset threshold value, the liquid in the container is about to overflow. Therefore, in the process of heating liquid, the boiling or overflowing state of the liquid in the container can be judged by detecting the output current signal of the capacitance liquid level sensor.
Step 102: and judging whether the liquid is in a state to be overflowed or not according to the variation trend of the current signal.
According to the above description, in the liquid overflow detection method provided by the embodiment, in the process of heating the liquid, whether the liquid is in the overflow state or not is judged according to the variation trend of the current signal output by the capacitive liquid level sensor, and compared with a single-value judgment mode, the overflow state detection accuracy can be effectively improved. In addition, through selecting for use electric capacity level sensor as signal detection device, effectively reduced cost and hardware complexity, strengthened the reliability. Therefore, the liquid overflow detection method provided by the embodiment can automatically identify the boiling or overflow state of the heated liquid, so that the use safety of the stove is improved, and the liquid overflow detection method can be applied to various kitchen utensils with heating functions and is wide in application range. In an alternative embodiment, the step 102 can be implemented by the following substeps 1021 ~ 1023. Referring specifically to fig. 2, in this embodiment, the liquid overflow detecting method specifically includes the following steps:
step 101: during the process of heating the liquid, the current signal output by the capacitance liquid level sensor is detected.
Step 1021: and generating a current change curve according to the current signal.
In this step, the current variation curve is a curve generated according to a current signal output by the capacitive liquid level sensor from the identification start time to the present time. The identification starting time is the time when heating is started, or the time when a first time interval passes since the heating is started, or the time when the current signal meets the identification starting condition.
Step 1022: and judging whether the current change curve meets a preset condition, if so, executing a step 1023, otherwise, returning to the step 1021 to continue generating the current change curve according to the current signal output by the capacitance liquid level sensor.
In this step, whether the current variation curve meets the preset condition may be determined in two ways, and specific determination ways may be referred to in the following two specific embodiments.
Step 1023: and judging that the liquid is in a state to be overflowed.
As can be seen from the above description, the liquid overflow detection method provided in this embodiment generates a current variation curve in real time according to the current signal output by the capacitive liquid level sensor, that is, converts the variation trend of the current signal into a current variation curve that can be quantized or visually described, and then determines the liquid overflow state according to the current variation curve that is formed in real time and can be quantized or visually described, so that the determination accuracy can be further improved on the basis of the above embodiment, and the overflow state detection accuracy can be effectively improved. In addition, through selecting for use electric capacity level sensor as signal detection device, effectively reduced cost and hardware complexity, strengthened the reliability. Therefore, the liquid overflow detection method provided by the embodiment can automatically identify the boiling or overflow state of the heated liquid, so that the use safety of the stove is improved, and the liquid overflow detection method can be applied to various kitchen utensils with heating functions and is wide in application range.
In an alternative embodiment, the step 1022 is specifically implemented as follows:
judging whether the current change curve is matched with an overflow interval in a pre-acquired standard overflow signal curve, wherein the standard overflow signal curve is used for displaying the corresponding relation between the value of the current signal output by the capacitive liquid level sensor and the heating time, and the overflow interval is marked in the standard overflow signal curve; and if so, determining that the liquid enters a to-be-overflowed state.
FIG. 3 shows a pre-acquired standard overflow signal curve. Referring to fig. 3, an overflow interval, i.e., the interval between point a and point b, is identified in the standard overflow signal curve. It will be appreciated that the capacitive liquid level sensor is positioned differently, as are the corresponding standard spill signal curves and spill intervals. Furthermore, the standard spill signal curve and spill interval are also related to the type of heated liquid in the container.
It should be noted that, the determining whether the current variation curve matches an overflow interval in a pre-obtained standard overflow signal curve may be understood as determining whether an interval matching the overflow interval in the pre-obtained standard overflow signal curve exists on the current variation curve, and if so, determining that the liquid is in a state to be overflowed.
For example, referring to the current profile obtained in FIG. 4a, since there is no interval thereon matching the overflow interval in the pre-acquired standard overflow signal profile, it indicates that the liquid in the container has not reached an overflow condition at this time. As also shown in the current profile obtained with reference to fig. 4b, since there is an interval (interval between two dotted lines) matching the overflow interval in the standard overflow signal profile obtained in advance, it indicates that the liquid in the container is about to overflow at this time.
It can be understood that, when determining whether an interval matching the overflow interval in the standard overflow signal curve acquired in advance exists on the current change curve acquired in real time, it is actually determined whether an interval similar to the curve shape of the overflow interval in the standard overflow signal curve acquired in advance exists on the current change curve acquired in real time. In the specific determination, a fuzzy matching method may be adopted, or other methods may also be adopted, for example, whether an interval matching an overflow interval in a standard overflow signal curve acquired in advance exists on a current change curve acquired in real time may be determined from two angles of time and a curve slope.
Unlike the alternative embodiment, in another alternative embodiment, the step 1022 is implemented specifically as follows:
and judging whether the current values of the current change curve in a time period of a preset length with the current moment as the end moment exceed a first threshold value, and if so, determining that the liquid enters a to-be-overflowed state.
See the current profile obtained in fig. 4c, for which a time period T of a predetermined length is obtained at the end of the present time T0The current values in the current sensor are all larger than a first threshold value I0It can thus be determined that the liquid enters the overflow-ready state.
In an alternative embodiment, referring to FIG. 5, the liquid overflow detection method comprises the step 103 in addition to the steps 101-102 (102 further comprises 1022-1023) described above.
Step 103: and when the liquid is judged to be in the state of waiting for overflowing, sending an anti-overflow instruction to a heating device for heating the liquid, so that the heating device changes the heating power of the container according to the anti-overflow instruction.
In this step, when it is detected that the liquid is in a state to be overflowed, an anti-overflow instruction is sent to the corresponding heating device, so that the corresponding heating device adjusts the working state. For example, the heating power is reduced to keep the container in a slow stewing state by slow fire, the food materials in the container are stewed without overflowing, or the heating device is directly closed to stop heating the liquid in the container.
Based on the same inventive concept, a second embodiment of the present invention provides a liquid overflow detection device, referring to fig. 6, including: a current signal detection module 21 and a to-be-overflowed state determination module 22, wherein:
the current signal detection module 21 is used for detecting a current signal output by the capacitance liquid level sensor in the process of heating liquid; the capacitance liquid level sensor is arranged on the outer side wall of a container for containing liquid;
and the to-be-overflowed state judging module 22 is used for judging whether the liquid is in the to-be-overflowed state or not according to the change trend of the current signal.
In an alternative embodiment, referring to fig. 7, the to-overflow status determination module 22 further includes: a curve generation unit 221 and an overflow-waiting state determination unit 222, wherein:
a curve generating unit 221, configured to generate a current variation curve according to the current signal;
the to-be-overflowed state determining unit 222 is configured to determine whether the current variation curve meets a preset condition, and if so, determine that the liquid is in the to-be-overflowed state.
In an optional implementation manner, the to-be-overflowed state determining unit 222 is specifically configured to:
judging whether the current change curve is matched with an overflow interval in a pre-acquired standard overflow signal curve, wherein the standard overflow signal curve is used for displaying the corresponding relation between the value of the current signal output by the capacitive liquid level sensor and the heating time, and the overflow interval is marked in the standard overflow signal curve;
and if so, determining that the liquid enters a to-be-overflowed state.
In an optional implementation manner, the to-be-overflowed state determining unit 222 is specifically configured to:
and judging whether the current values of the current change curve in a time period of a preset length with the current moment as the end moment exceed a first threshold value, and if so, determining that the liquid enters a to-be-overflowed state.
In an alternative embodiment, referring to fig. 8, the liquid overflow detecting device includes, in addition to the current signal detecting module 21 and the to-be-overflowed state determining module 22, the following: a sending module 23;
the sending module 23 is configured to send an anti-overflow instruction to a heating device for heating the liquid when the to-be-overflowed state determining module determines that the liquid is in the to-be-overflowed state, so that the heating device changes the heating power of the container according to the anti-overflow instruction.
It is understood that the transmitting module 23 may be a wireless communication module, such as one of a bluetooth module, a ZigBee module and a Wi-Fi module, for facilitating wireless data transmission with the heating device.
The liquid overflow detection device provided in this embodiment may be specifically configured to execute the liquid overflow detection method described in the foregoing embodiment, and the working principle and the beneficial effect thereof are similar, and are not described herein again.
Based on the same inventive concept, a third embodiment of the present invention provides a pot, referring to fig. 9, the pot is provided with a capacitive liquid level sensor 1 and a liquid overflow detection device 2 as described in the second embodiment;
wherein, electric capacity level sensor sets up on the lateral wall of pan.
In an alternative embodiment, the pot comprises a pot body, and correspondingly, the liquid overflow detecting device is arranged on the outer wall of the pot body (as shown in fig. 9).
In an alternative embodiment, the pot comprises a pot body and a pot cover, and correspondingly, the liquid overflow detecting device is arranged on the pot cover.
It can be understood that the pot tool described in this embodiment can be a stainless steel pot, an iron pot, an aluminum pot, an earthenware pot, a copper pot, an enamel pot, a non-stick pot, a composite pot, and the like. The cooker in the embodiment can also be a pressure cooker, a frying pan, a soup pot, a steamer, a multifunctional pot, an inner container of an electric cooker, an inner container of an electric kettle, an inner container of a soybean milk machine and the like.
Because the pan that this embodiment provided contains the liquid that above-mentioned embodiment provided and spills over detection device, therefore the pan that this embodiment provided can accurately detect liquid effectively and spill over the state.
Based on the same inventive concept, a fourth embodiment of the present invention provides a heating apparatus, referring to fig. 10, including: the device comprises a receiving module and a control module;
the receiving module is used for receiving an anti-overflow instruction sent by the liquid overflow detecting device according to the second embodiment;
and the control module is used for changing the heating power of the heating device according to the anti-overflow instruction.
It is understood that the receiving module may be implemented by a wireless communication module, for example, one of a bluetooth module, a ZigBee module and a Wi-Fi module, so as to facilitate wireless data transmission with the liquid overflow detecting device.
It can be understood that the control module can be realized by adopting a single chip microcomputer.
It is understood that the heating device may be one or more of an induction cooker, a gas range, and an electric heating sheet.
Since the heating device provided by the present embodiment receives the overflow prevention instruction sent by the liquid overflow detection device provided by the above embodiment, the heating device provided by the present embodiment can effectively prevent the overflow of the heating liquid.
Based on the same inventive concept, a fifth embodiment of the present invention provides a heating assembly, referring to fig. 11, including: a heating device 3 as described in the fourth embodiment above, and a liquid overflow detecting device 2 as described in the second embodiment above.
It can be understood that the heating device further comprises a heating container 4, wherein the heating container 4 is provided with a capacitive liquid level sensor 1, the liquid overflow detection device 2 is also arranged on the heating container 4, and the capacitive liquid level sensor 1 is connected with the liquid overflow detection device 2.
Because the heating assembly provided by the embodiment comprises the heating device and the liquid overflow detection device provided by the embodiment, the heating assembly provided by the embodiment can effectively detect the liquid overflow state, and timely control the heating device to adjust the heating power, so that the overflow of the heating liquid can be prevented.
Based on the same inventive concept, an embodiment of the present invention provides an electronic device, which specifically includes the following contents, with reference to fig. 12: a processor 701, a memory 702, a communication interface 703 and a bus 704;
the processor 701, the memory 702 and the communication interface 703 complete mutual communication through the bus 704; the communication interface 703 is used for realizing information transmission between related devices such as modeling software, an intelligent manufacturing equipment module library and the like;
the processor 701 is configured to call the computer program in the memory 702, and the processor implements all the steps in the first embodiment when executing the computer program, for example, the processor implements the following steps when executing the computer program:
step 101: during the process of heating the liquid, the current signal output by the capacitance liquid level sensor is detected.
Step 102: and judging whether the liquid is in a state to be overflowed or not according to the variation trend of the current signal.
Based on the same inventive concept, a seventh embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements all the steps of the first embodiment, for example, when the processor executes the computer program, the processor implements the following steps:
step 101: during the process of heating the liquid, the current signal output by the capacitance liquid level sensor is detected.
Step 102: and judging whether the liquid is in a state to be overflowed or not according to the variation trend of the current signal.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (15)
1. A liquid overflow detection method, comprising:
detecting a current signal output by a capacitance liquid level sensor in the process of heating liquid;
judging whether the liquid is in a state of waiting for overflowing according to the variation trend of the current signal, comprising the following steps: generating a current change curve according to the current signal; judging whether the current change curve meets a preset condition, if so, judging that the liquid is in a state to be overflowed;
the capacitance liquid level sensor is arranged on the outer side wall of a container for containing liquid; the current change curve is a curve generated according to a current signal from the identification starting moment to the current moment;
wherein, the judging whether the current variation curve meets a preset condition comprises:
judging whether the current change curve is matched with an overflow interval in a pre-acquired standard overflow signal curve, wherein the standard overflow signal curve is used for displaying the corresponding relation between the value of the current signal output by the capacitive liquid level sensor and the heating time, and the overflow interval is marked in the standard overflow signal curve;
and if so, determining that the liquid enters a to-be-overflowed state.
2. The liquid overflow detecting method according to claim 1, wherein the identification start time is a time at which heating is started, or a time after a first period of time has elapsed since heating was started, or a time at which the current signal satisfies the identification start condition.
3. The liquid overflow detection method according to claim 1 or 2, further comprising:
and when the liquid is judged to be in the state of waiting for overflowing, sending an anti-overflow instruction to a heating device for heating the liquid, so that the heating device changes the heating power of the container according to the anti-overflow instruction.
4. The liquid spill detection method of claim 1 or 2, wherein the capacitive liquid level sensor is disposed on an outer sidewall proximate the top of the container.
5. The liquid overflow detection method of any of claims 1 or 2, wherein the capacitive liquid level sensor is disposed on an outer sidewall proximate the container bottom.
6. A liquid overflow detection device, comprising:
the current signal detection module is used for detecting a current signal output by the capacitance liquid level sensor in the process of heating liquid;
the to-be-overflowed state judging module is used for judging whether the liquid is in the to-be-overflowed state according to the change trend of the current signal, and comprises: generating a current change curve according to the current signal; judging whether the current change curve meets a preset condition, if so, judging that the liquid is in a state to be overflowed;
the capacitance liquid level sensor is arranged on the outer side wall of a container for containing liquid; the current change curve is a curve generated according to a current signal from the identification starting moment to the current moment;
the to-be-overflowed state judgment module is specifically configured to, when judging whether the current variation curve meets a preset condition:
judging whether the current change curve is matched with an overflow interval in a pre-acquired standard overflow signal curve, wherein the standard overflow signal curve is used for displaying the corresponding relation between the value of the current signal output by the capacitive liquid level sensor and the heating time, and the overflow interval is marked in the standard overflow signal curve;
and if so, determining that the liquid enters a to-be-overflowed state.
7. The liquid overflow detection device of claim 6, further comprising: a sending module;
the sending module is used for sending an anti-overflow instruction to a heating device for heating the liquid when the to-be-overflowed state judging module judges that the liquid is in the to-be-overflowed state, so that the heating device changes the heating power of the container according to the anti-overflow instruction.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the liquid overflow detection method according to any of claims 1 to 5 are implemented when the program is executed by the processor.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the liquid overflow detection method of any one of claims 1 to 5.
10. A pot, characterized in that, a capacitance liquid level sensor and the liquid overflow detection device of claim 6 or 7 are arranged on the pot;
wherein the capacitive liquid level sensor is arranged on an outer side wall of a container for containing liquid.
11. The pot as claimed in claim 10, wherein the pot comprises a pot body and the liquid overflow detecting means is correspondingly disposed on an outer wall of the pot body.
12. The pot as claimed in claim 10, wherein the pot comprises a pot body and a pot cover, and correspondingly, the liquid overflow detecting means is disposed on the pot cover.
13. A heating device, comprising: a receiving unit and a control unit;
the receiving unit is used for receiving an anti-overflow instruction sent by the liquid overflow detection device according to claim 7;
and the control unit is used for changing the heating power of the heating device according to the anti-overflow instruction.
14. The heating device of claim 13, wherein the heating device comprises one or more of an induction cooker, a gas range, and an electric heating plate.
15. A heating assembly, characterized in that the heating assembly comprises: a heating device as claimed in claim 13 or 14, and a liquid overflow detection device as claimed in claim 7.
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| CN201810265935.0A CN109425407B (en) | 2018-03-28 | 2018-03-28 | Liquid overflow detection method and device, pot, heating device and heating assembly |
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| CN102823322B (en) * | 2010-06-10 | 2014-09-10 | 松下电器产业株式会社 | Induction heating cooker |
| CN107080464B (en) * | 2017-05-22 | 2020-07-03 | 杭州九阳小家电有限公司 | Anti-overflow method of cooking equipment |
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| CN201766982U (en) * | 2009-12-30 | 2011-03-23 | 九阳股份有限公司 | Easy-cleaning soymilkgrinder |
| CN101979967A (en) * | 2010-11-05 | 2011-02-23 | 浙江苏泊尔家电制造有限公司 | Liquid level detecting device |
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