CN111012189B - Equipment, method and device for detecting state of articles in pot and storage medium - Google Patents
Equipment, method and device for detecting state of articles in pot and storage medium Download PDFInfo
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- CN111012189B CN111012189B CN201911089344.3A CN201911089344A CN111012189B CN 111012189 B CN111012189 B CN 111012189B CN 201911089344 A CN201911089344 A CN 201911089344A CN 111012189 B CN111012189 B CN 111012189B
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- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
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Abstract
The application discloses equipment, a method and a device for detecting the state of articles in a pot and a storage medium, wherein the method comprises the following steps: detecting the temperature of the pot body through a temperature sensing device, and transmitting the detected temperature of the pot body to a microprocessor; the microprocessor calculates the temperature change rate of the pot body according to the temperature of the pot body; and analyzing the state of the articles in the pot according to the pot body temperature, the pot body temperature change rate and a preset state temperature change rate threshold value. This application detects pot body temperature through the temperature sensing device who sets up in advance to utilize microprocessor to calculate the rate of change that pot body temperature corresponds, thereby based on preset state temperature change rate threshold value, the state of judging article in the pot can avoid direct measurement pot temperature to lead to the interior article of pot to pollute, and combine pot body temperature and temperature change rate to carry out the analysis, promoted the accuracy of state judgement.
Description
Technical Field
The present application relates to the field of intelligent cookware technologies, and in particular, to a device, a method, an apparatus, and a storage medium for detecting the state of an object in a pot.
Background
When the existing electric heating cooking appliances (including electric heating cookers, induction cookers, electric heating kettles, etc.) are used for cooking (such as boiling water, cooking porridge, cooking soup, etc.), a method for detecting the temperature of the articles in the pot is usually adopted to judge whether the articles in the pot are boiled, and when the temperature of the articles in the pot is detected to reach a certain set value (generally, the boiling point), the articles in the pot are judged to be in the boiling state. The method has the defect of inaccurate detection, and particularly, because the liquid has different boiling points in different high-altitude areas, when the electric heating cooking utensil is used in one area and is used in another area with different altitude, the ideal cooking effect is difficult to obtain because the boiling state of the articles in the pot cannot be accurately judged, or the electric heating cooking utensil must be adjusted according to the boiling point of water in the area before the electric heating cooking utensil is used, so that the ideal cooking effect can be obtained. How to accurately and conveniently judge the boiling state (or other states) of articles in the pot becomes an important problem in the field of intelligent pots.
Disclosure of Invention
In view of this, the present application provides a device, a method, a device, and a storage medium for detecting the state of an object in a pot, which can detect the temperature of the pot, avoid the pollution of the object in the pot caused by directly measuring the temperature in the pot, and improve the accuracy of state judgment by analyzing the temperature of the pot and the temperature change rate thereof.
According to a first aspect of the present application, there is provided a state detecting apparatus of an item in a pan, comprising:
the temperature sensing device is arranged on the pot wall and used for detecting the temperature of the pot body;
and the microprocessor is connected with the temperature sensing device and used for calculating the temperature change rate of the pot body according to the temperature of the pot body and analyzing the state of articles in the pot according to the temperature change rate of the pot body.
Specifically, temperature sensing device includes bottom of a boiler temperature sensing device and/or pot wall temperature sensing device, bottom of a boiler temperature sensing device sets up in the position that pot body bottom is close to pot body inside wall, pot wall temperature sensing device sets up in the position that pot body bottom is close to pot body outside wall.
According to a second aspect of the application, a pot is provided, which comprises a pot body and the above-mentioned state detection equipment for the articles in the pot.
According to a third aspect of the present application, there is provided a method for detecting a state of an item in a pot, for use in a state detecting apparatus for an item in a pot as described above or a pot as described above, the method comprising:
detecting the temperature of the pot body through a temperature sensing device, and transmitting the detected temperature of the pot body to a microprocessor;
the microprocessor calculates the temperature change rate of the pot body according to the temperature of the pot body;
and analyzing the state of the articles in the pot according to the pot body temperature, the pot body temperature change rate and a preset state temperature change rate threshold value.
Specifically, according to the pot body temperature, calculate pot body temperature rate of change, specifically include:
and if the pot body temperature is greater than a preset change rate analysis threshold value, fitting the pot body temperature and the detection time corresponding to the pot body temperature according to a preset unary linear fitting model to obtain the pot body temperature change rate K, wherein the unary linear fitting model is y ═ kx + b, y is the pot body temperature, x is the detection time, and b is a fitting constant.
Specifically, temperature sensing device includes bottom of a boiler temperature sensing device and/or pot wall temperature sensing device, works as temperature sensing device includes bottom of a boiler temperature sensing device with when pot wall temperature sensing device, detect pot body temperature through temperature sensing device, specifically include:
the pot bottom temperature and the pot wall temperature are detected through the pot bottom temperature sensing device and the pot wall temperature sensing device.
Specifically, when the temperature sensing device includes the pot bottom temperature sensing device and the pot wall temperature sensing device, according to the pot body temperature, calculate pot body temperature rate of change, specifically include:
if the pot bottom temperature and/or the pot wall temperature are/is larger than the preset change rate analysis threshold, fitting the pot bottom temperature and the detection time according to the preset unitary linear fitting model to obtain a pot bottom temperature change rate k 1;
fitting the pot wall temperature and the detection time according to the preset unary linear fitting model to obtain a pot wall temperature change rate k 2;
fitting the absolute value of the difference between the temperature of the pot bottom and the temperature of the pot wall and the detection time according to the preset unary linear fitting model to obtain the change rate k3 of the temperature difference between the pot bottom and the pot wall;
and adding the absolute value of the pot bottom temperature change rate K1, the absolute value of the pot wall temperature change rate K2 and the absolute value of the pot bottom and pot wall temperature difference change rate K3 to obtain the pot body temperature change rate K.
Specifically, when temperature sensing device includes bottom of a boiler temperature sensing device with during pot wall temperature sensing device, the basis pot body temperature, pot body temperature rate of change and preset state temperature rate of change threshold value, the state of article in the analysis pot specifically includes:
if the pot bottom temperature and/or the pot wall temperature are/is greater than a preset boiling detection temperature and less than or equal to a preset dry-burning detection temperature, judging whether the pot body temperature change rate K is less than or equal to a preset boiling temperature change rate;
and if the temperature change rate K of the pot body is less than or equal to the preset boiling temperature change rate, outputting the state of the articles in the pot as a boiling state.
Specifically, when temperature sensing device includes bottom of a boiler temperature sensing device with during pot wall temperature sensing device, the basis pot body temperature, pot body temperature rate of change and preset state temperature rate of change threshold value, the state of article in the analysis pot specifically includes:
if the pot bottom temperature and/or the pot wall temperature are/is greater than the preset dry-burning detection temperature, judging whether the pot body temperature change rate K is greater than the preset dry-burning temperature change rate;
and if the temperature change rate K of the pot body is greater than the preset dry-burning temperature change rate, outputting the state of the articles in the pot as a dry-burning state.
Specifically, when temperature sensing device includes bottom of a boiler temperature sensing device with during pot wall temperature sensing device, the basis pot body temperature, pot body temperature rate of change and preset state temperature rate of change threshold value, the state of article in the analysis pot specifically includes:
if the pot bottom temperature and/or the pot wall temperature are/is greater than a preset boiling detection temperature and less than or equal to the preset boiling detection temperature, judging whether the pot body temperature change rate K is less than or equal to a preset pre-boiling temperature change rate;
and if the temperature change rate K of the pot body is less than or equal to the preset boiling temperature change rate, outputting the state of the articles in the pot as a pre-boiling state.
Specifically, detect pot body temperature through temperature sensing device specifically includes:
detecting the temperature of the pot body through the temperature sensing device according to a preset detection period;
according to pot body temperature, calculate pot body temperature rate of change, specifically include:
and calculating the temperature change rate of the pot body according to the temperature of the pot body corresponding to at least three continuous preset detection periods.
According to a fourth aspect of the present application, there is provided a state detecting device for an article in a pot, which is used for the above state detecting device for an article in a pot or the above pot, the device comprising:
the pot body temperature detection module is used for detecting the temperature of the pot body through the temperature sensing device and transmitting the detected temperature of the pot body to the microprocessor;
the temperature change rate calculation module is used for calculating the pot body temperature change rate by the microprocessor according to the pot body temperature;
and the state analysis module is used for analyzing the state of the articles in the pot according to the pot body temperature, the pot body temperature change rate and a preset state temperature change rate threshold value.
Specifically, the temperature change rate calculation module is specifically configured to:
and if the pot body temperature is greater than a preset change rate analysis threshold value, fitting the pot body temperature and the detection time corresponding to the pot body temperature according to a preset unary linear fitting model to obtain the pot body temperature change rate K, wherein the unary linear fitting model is y ═ kx + b, y is the pot body temperature, x is the detection time, and b is a fitting constant.
Specifically, the temperature sensing device includes a pan bottom temperature sensing device and/or a pan wall temperature sensing device, and when the temperature sensing device includes the pan bottom temperature sensing device and the pan wall temperature sensing device, the pan body temperature detection module is specifically configured to:
the pot bottom temperature and the pot wall temperature are detected through the pot bottom temperature sensing device and the pot wall temperature sensing device.
Specifically, when the temperature sensing device includes the pan bottom temperature sensing device and the pan wall temperature sensing device, the temperature change rate calculation module specifically includes:
a first change rate calculation unit, configured to fit the pot bottom temperature and the detection time according to the preset unary linear fitting model if the pot bottom temperature and/or the pot wall temperature are/is greater than the preset change rate analysis threshold, so as to obtain a pot bottom temperature change rate k 1;
the second change rate calculation unit is used for fitting the pot wall temperature and the detection time according to the preset unary linear fitting model to obtain a pot wall temperature change rate k 2;
a third change rate calculation unit, configured to fit the absolute value of the difference between the pan bottom temperature and the pan wall temperature and the detection time according to the preset unary linear fitting model, so as to obtain a change rate k3 of the temperature difference between the pan bottom and the pan wall;
and the fourth change rate calculation unit is used for adding the absolute value of the pan bottom temperature change rate K1, the absolute value of the pan wall temperature change rate K2 and the absolute value of the pan bottom and pan wall temperature difference change rate K3 to obtain the pan body temperature change rate K.
Specifically, when the temperature sensing device includes the pan bottom temperature sensing device and the pan wall temperature sensing device, the state analysis module specifically includes:
a boiling state judgment unit, configured to judge whether the pot temperature change rate K is less than or equal to a preset boiling temperature change rate if the pot bottom temperature and/or the pot wall temperature is greater than a preset boiling detection temperature and is less than or equal to a preset dry-burning detection temperature;
and the boiling state output unit is used for outputting the state of the articles in the pot to be a boiling state if the pot temperature change rate K is less than or equal to the preset boiling temperature change rate.
Specifically, when the temperature sensing device includes the pan bottom temperature sensing device and the pan wall temperature sensing device, the state analysis module specifically includes:
a dry-burning state judgment unit, configured to judge whether the pot body temperature change rate K is greater than a preset dry-burning temperature change rate if the pot bottom temperature and/or the pot wall temperature is greater than a preset dry-burning detection temperature;
and the dry-burning state output unit is used for outputting the state of the articles in the pot to be a dry-burning state if the temperature change rate K of the pot body is greater than the preset dry-burning temperature change rate.
Specifically, when the temperature sensing device includes the pan bottom temperature sensing device and the pan wall temperature sensing device, the state analysis module specifically includes:
a pre-boiling state judgment unit, configured to judge whether the pot temperature change rate K is less than or equal to a preset pre-boiling temperature change rate if the pot bottom temperature and/or the pot wall temperature is greater than a preset pre-boiling detection temperature and is less than or equal to the preset boiling detection temperature;
and the pre-boiling state output unit is used for outputting the state of the articles in the pot to be a pre-boiling state if the pot temperature change rate K is less than or equal to the preset pre-boiling temperature change rate.
Specifically, the pot body temperature detection module is specifically used for detecting the temperature of the pot body through the temperature sensing device according to a preset detection period;
the temperature change rate calculation module is specifically used for calculating the pot body temperature change rate according to the pot body temperature corresponding to at least three continuous preset detection periods.
According to a fifth aspect of the present application, there is provided a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method of status detection of items in a pan.
According to a sixth aspect of the present application, there is provided a computer apparatus comprising a storage medium, a processor and a computer program stored on the storage medium and executable on the processor, the processor implementing the above method for detecting the status of an item in a pan when executing the program.
By means of the technical scheme, the state detection equipment, the state detection method, the state detection device and the storage medium of the articles in the pot detect the temperature of the pot body through the preset temperature sensing device, and the microprocessor is used for calculating the change rate corresponding to the temperature of the pot body, so that the state of the articles in the pot is judged based on the preset state temperature change rate threshold value. With prior art in, rely on and detect pot temperature to carry out state analysis according to the temperature rate of change in the pot and compare, this application detects pot body temperature, can avoid direct measurement pot temperature to lead to the interior article of pot to pollute, and combine pot body temperature and temperature rate of change to carry out the analysis, promoted the accuracy of state judgement.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram illustrating an arrangement position of a temperature sensing device according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart illustrating a method for detecting the status of the items in the pan according to an embodiment of the present application;
FIG. 3 is a schematic flow chart illustrating another method for detecting the status of the items in the pan according to the embodiment of the present application;
FIG. 4 is a schematic diagram showing a fitted curve of the temperature change rate of the pot body during the heating process of the contents in the pot;
FIG. 5 is a schematic structural diagram of a device for detecting the status of an article in a pan according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another device for detecting the status of an item in a pan according to an embodiment of the present application.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In a first aspect of the embodiments of the present application, there is provided a status detecting apparatus for an item in a pan, including: the temperature sensing device 1 is arranged on the wall of the pot, and the temperature sensing device 1 is used for detecting the temperature of the pot body; and the microprocessor is connected with the temperature sensing device 1 and used for calculating the temperature change rate of the pot body according to the temperature of the pot body and analyzing the state of the articles in the pot according to the temperature change rate of the pot body.
In the above embodiment, the state detecting device comprises the temperature sensing device 1 and the microprocessor, wherein the temperature sensing device 1 is arranged at the wall of the pot, the temperature of the pot body is detected through the temperature sensing device 1, and the temperature sensing device 1 is connected with the microprocessor, the temperature sensing device 1 transmits the detected temperature of the pot body to the microprocessor, and the microprocessor analyzes the state of the articles in the pot by using the detected temperature value of the pot body.
It should be noted that, as shown in fig. 1, the temperature sensing device 1 is generally disposed on the pot wall near the bottom of the pot body, so as to prevent the pot wall at the position of the temperature sensing device 1 from being unable to conduct heat transfer with the articles in the pot due to too few articles in the pot and too high position of the temperature sensing device 1, in addition, the temperature sensing device 1 is disposed in the interlayer of the pot wall, when the pot is filled with liquid and heats the pot, the heat is transferred to the liquid in the pot through the outer side wall of the pot body (i.e. the heated outer wall of the pot), the heat transfer layer of the pot body, and the inner side wall of the pot body (i.e. the inner food material heating layer), so as to heat the liquid or maintain the liquid boiling, thereby preventing the temperature sensing device 1 from contacting with the food in the pot to pollute the food.
In each stage of liquid heating, the liquid temperature and the change condition of the liquid temperature can present different characteristics, for example, when the liquid boils, the liquid temperature is in a balanced state, if the liquid temperature keeps 95 ℃ during boiling, the heat is evaporated and taken away along with the boiling of the liquid, and simultaneously the same heat is received from the pot body, namely, the liquid temperature keeps constant, the heat received by the pot body from the heating source and the heat transmitted to articles in the pot are also in a balanced state, namely, the pot body temperature also keeps constant, and if the pot body temperature keeps 120 ℃ during boiling, similarly, in other stages of liquid heating, such as dry burning, small boiling and the like, the liquid temperature and the pot body temperature can present certain temperature characteristics. Therefore, if the change conditions of the liquid temperature and the temperature of the pot body in different heating stages are summarized, the state of the articles in the pot can be analyzed.
However, the temperature of the pot body is greatly influenced by the power of the induction cooker, the pot temperature in a stable state is different when the liquid is boiled under different powers, in addition, the temperature of the pot measured when the liquid is boiled is different due to different liquid components, external atmospheric pressure and environmental temperature, and on the other hand, the initial temperature of the medium in the pot is different from that of the medium in the pot, and the temperature of the pot measured when the liquid is boiled is different from that of the medium in the pot. It is not desirable to simply exceed a certain temperature threshold to determine whether the liquid is boiling. If the pot body temperature values of different stages in the liquid heating process corresponding to different electromagnetic oven powers, liquid components, external atmospheric pressure and environment temperatures are summarized respectively, the method is obviously not preferable. Therefore, in the process of heating the liquid, the state of the liquid cannot be directly judged through the temperature of the pot.
However, in the liquid heating process, the temperature change rate of the liquid and the pan body still shows a certain change characteristic, so the embodiment of the application analyzes the state of the articles in the pan body by using the microprocessor according to the change rate of the pan body temperature.
In any embodiment of the present application, specifically, as shown in fig. 1, the temperature sensing device 1 includes a bottom temperature sensing device 11 and/or a wall temperature sensing device 12, the bottom temperature sensing device 11 is disposed at a position of the bottom of the pan body close to the inner sidewall of the pan body, and the wall temperature sensing device 12 is disposed at a position of the bottom of the pan body close to the outer sidewall of the pan body.
In the above embodiment, in order to improve the measurement accuracy of the pot body temperature, a plurality of temperature sensing devices can be specifically arranged at different positions of the pot wall, and two temperature sensing devices are preferably arranged in the embodiment of the present application, including the pot bottom temperature sensing device 11 arranged at a position close to the inner side wall of the pot body at the bottom of the pot body and the pot wall temperature sensing device 12 arranged at a position close to the outer side wall of the pot body at the bottom of the pot body. The detection value of the pan bottom temperature sensing device 11 is closer to the heat source temperature, the detection value of the pan wall temperature sensing device 12 is closer to the temperature of the articles in the pan, but the change condition of the detection temperature corresponding to either the pan bottom temperature sensing device 11 or the pan wall temperature sensing device 12 is consistent with the temperature change characteristic corresponding to each heating stage of the liquid.
In a second aspect of the embodiments of the present application, a pot is provided, which includes a pot body and the above-mentioned state detection device for the articles in the pot.
It should be noted that, in the pot provided in the embodiments of the present application, reference may be made to the above description of the device for detecting a state of an object in the pot for corresponding functions, and details are not described herein again.
In a third aspect of the embodiments of the present application, there is provided a method for detecting a state of an item in a pot, which is used in the above-mentioned apparatus for detecting a state of an item in a pot or the above-mentioned pot, as shown in fig. 2, the method includes:
The pot body temperature at the corresponding position is detected by using the temperature sensing device, and the pot body temperature signal obtained by detection is transmitted to the microprocessor, so that the pot body temperature signal is subjected to analog-to-digital conversion by using the microprocessor to obtain a pot body temperature value, for example, the microprocessor can comprise an AD7124-4ADC chip, a 24bit sigma-delta ADC converter and various digital filters, such as sinc, which are arranged in the chip4And the imbalance and gain errors in the chip are calibrated, so that the high-precision temperature sensor not only has high precision, but also provides 50Hz/60Hz interference suppression capability, and an accurate pot body temperature value is obtained. So that the microprocessor can utilize the obtained temperature value of the pan body to analyze the state of the articles in the pan body.
The microprocessor analyzes the temperature change characteristic of the pot body according to the temperature value of the pot body, and can specifically calculate the change rate of the temperature of the pot body, thereby analyzing the state of articles in the pot according to the temperature change rate characteristic corresponding to each heating state of the liquid.
And 203, analyzing the state of the articles in the pot according to the pot body temperature, the pot body temperature change rate and a preset state temperature change rate threshold value.
For example, under different conditions, if the boiling temperature of water is above 80 ℃ and the temperature change rate during boiling is close to 0, the corresponding temperature of the pot is also above 80 ℃ approximately, and the change rate is close to 0.
In the above embodiment, when the temperature of the pan body reaches a certain value, the temperature change rate of the pan body is calculated, and then the state of the articles in the pan is analyzed by comparing the temperature change rate of the pan body with the preset temperature change rate threshold of each state. For example, when the temperature of the pot body reaches 80 ℃, the temperature change rate of the pot body starts to be calculated, and when the temperature change rate of the pot body is matched with the preset temperature change rate threshold value of the pot body in the boiling state, the articles in the pot can be judged to be in the boiling state.
By applying the technical scheme of the embodiment, the temperature of the pot body is detected by the preset temperature sensing device, and the change rate corresponding to the temperature of the pot body is calculated by the microprocessor, so that the state of the articles in the pot is judged based on the preset state temperature change rate threshold value. With prior art in, rely on and detect pot temperature to carry out state analysis according to the temperature rate of change in the pot and compare, this application detects pot body temperature, can avoid direct measurement pot temperature to lead to the interior article of pot to pollute, and combine pot body temperature and temperature rate of change to carry out the analysis, promoted the accuracy of state judgement.
Further, as a refinement and an extension of the specific implementation of the above embodiment, in order to fully illustrate the specific implementation process of the embodiment, another method for detecting the state of the item in the pot is provided, specifically, the temperature sensing device includes a pot bottom temperature sensing device and/or a pot wall temperature sensing device, and when the temperature sensing device includes a pot bottom temperature sensing device and a pot wall temperature sensing device, as shown in fig. 3, the method includes:
When the temperature sensing device comprises a pot bottom temperature sensing device and a pot wall temperature sensing device, the two sensing devices are respectively used for detecting the pot body temperature at the corresponding positions, and the pot bottom temperature and the pot wall temperature are respectively obtained.
In the embodiment of the application, the temperature of the pot body is detected through the temperature sensing device according to a preset detection period.
In the above embodiment, when the temperature sensing device is used to detect the temperature of the pan body, the time interval between every two adjacent detection time points is the same, for example, the pan body temperature is detected every 1 second, and if the first detection time is 0 point, then the detection is performed at 0 point 1 second, 0 point 2 second, and 0 point 3 second … …, respectively. In addition, the detection times of the pan bottom temperature sensing means and the pan wall temperature sensing means should be synchronized, that is, if the pan bottom temperature sensing means detects … … at 0 o 'clock, 0 o' clock 1 sec, 0 o 'clock 2 sec, and 0 o' clock 3 sec, the pan wall temperature sensing means also detects … … at 0 o 'clock, 0 o' clock 1 sec, 0 o 'clock 2 sec, and 0 o' clock 3 sec.
And 302, if the pot bottom temperature and/or the pot wall temperature are/is greater than a preset change rate analysis threshold, fitting the pot bottom temperature and the detection time according to a preset unitary linear fitting model to obtain a pot bottom temperature change rate k 1.
In the above embodiment, a trigger condition for calculating the temperature change rate is further set, that is, the pan bottom temperature and/or the pan wall temperature is greater than a preset change rate analysis threshold, where the preset change rate analysis threshold defines a trigger temperature value at which the temperature change rate is started to be calculated, and only when the pan bottom temperature and/or the pan wall temperature reaches the trigger temperature value, the fitting calculation of the temperature change rate is started. The preset change rate analysis threshold value is determined according to the state to be detected, for example, the boiling state of the contents in the pot needs to be detected, the threshold value may be set to be slightly lower than the boiling point of the contents in the pot, the low-boiling state of the contents in the pot needs to be detected, and the threshold value may be set to be slightly lower than the temperature of the contents in the pot in the low-boiling state.
In the embodiment, the variance is calculated by a mathematical statistics method, the temperature value is fitted, a relative value is obtained, uncertainty of molecular thermal motion is avoided, and detection accuracy is improved.
Assuming that the boiling state of the articles in the pot needs to be detected and the boiling point of the liquid is approximately 80 ℃, the preset change rate analysis threshold value can be set to 70 ℃, and when the pot bottom temperature and/or the pot wall temperature are/is higher than 70 ℃, the pot bottom temperature and the corresponding detection time thereof, and the pot wall temperature and the corresponding detection time thereof are respectively fitted to obtain a pot bottom temperature change rate k1 and a pot wall temperature change rate k 2.
In addition, in the embodiment of the present application, a specific temperature change rate fitting method is further provided, specifically, if the pot body temperature is greater than the preset change rate analysis threshold, the pot body temperature and the detection time corresponding to the pot body temperature are fitted according to a preset unitary linear fitting model to obtain the pot body temperature change rate K, where the unitary linear fitting model is y ═ kx + b, y is the pot body temperature, x is the detection time, and b is the fitting constant.
In the above embodiment, the fitting is performed according to the unary linear fitting model, so as to obtain the pan bottom temperature change rate k1 and the pan wall temperature change rate k2, specifically, the fitting may be performed by using a least square method, and the fitting method is not limited herein.
In addition, in the embodiment of the present application, in order to improve the accuracy of the temperature change rate, specifically, the temperature change rate of the pot body is calculated according to the pot body temperatures corresponding to at least three consecutive preset detection periods.
In the above embodiment, if the temperature change rates of two adjacent detection points are directly calculated, the fluctuation of the change rate is particularly large due to random irregular motion or vibration of material molecules during heating, and a large misjudgment is caused, so that at least three recent historical pan body temperatures are selected and stored, for example, 20 historical temperature data are obtained, that is, each time one data is obtained, the data and the recent 19 data collected in the previous history form 20 detection points to be fitted, and the temperature change rate is calculated once, so that the judgment speed can be increased, and the misjudgment rate can be reduced. The 20 data were fitted by least squares to give a straight line fit. The temperature of the pot body exceeds the preset change rate analysis threshold value, namely y is the collected pot body temperature, and k is the change rate of the approximate temperature embodied by the 20 sampling data along with the time, the randomness of molecular motion always fluctuates around a stable state, the influence of the random change of the temperature can be filtered by adding the detection points and carrying out statistical fitting, and the state of the articles in the pot can be judged through the range of the temperature change rate value along with the time calculated after the fitting.
And step 304, fitting the absolute value of the difference between the temperature of the pot bottom and the temperature of the pot wall and the detection time according to a preset unary linear fitting model to obtain the change rate k3 of the temperature difference between the pot bottom and the pot wall.
In the above embodiment, in order to improve the accuracy of determining the state of the articles in the pan, the absolute value of the difference between the pan bottom temperature and the pan wall temperature is also fitted to obtain the corresponding rate of change k3 of the temperature difference between the pan bottom and the pan wall.
And 305, adding the absolute value of the pot bottom temperature change rate K1, the absolute value of the pot wall temperature change rate K2 and the absolute value of the pot bottom and pot wall temperature difference change rate K3 to obtain a pot body temperature change rate K.
In the embodiment, in order to improve the judgment sensitivity of the software program, three groups of data of the temperature of the pot bottom, the temperature of the pot wall and the temperature difference of the pot bottom and the pot wall are respectively fitted, three slope values of k1, k2 and k3 are obtained, wherein the values of k1, k2 and k3 are positive values or negative values, therefore, the absolute values of the three slope k values are taken and added to obtain a total k value, and when the k values of the three slope k values change, the change amplitude of the total k value can be increased, as long as the temperature of the pot bottom and the temperature of the pot wall are changed, or the temperature difference between the two, one of the three values is increased or decreased, easily exceeds the set boiling point k value range, by doing so, it can be quickly determined that the water is in a non-equilibrium state or an equilibrium state under boiling, due to a change in temperature of the water.
and 307, if the temperature change rate K of the pot body is less than or equal to the preset boiling temperature change rate, outputting the state of the articles in the pot as a pre-boiling state.
In steps 306 and 307, a detection mode for the pre-boiling state of the contents in the pan is defined. In order to determine the relationship between the temperature change rate of the pot body and the state of the articles in the pot, experiments are carried out in advance, and a graph of fig. 4 is drawn according to the experimental results, wherein the graph of fig. 4 shows a fitting curve diagram of the temperature change rate of the pot body in the heating process of the inner body of the pot. In the figure, the abscissa represents the detection points, the ordinate represents the temperature change rate of the pot body, and the temperature change rate of the pot body is marked when the articles in the pot are in different stages in the figure, specifically, the rapid temperature rise stage, the small boiling stage (namely, the pre-boiling stage), the large boiling stage (namely, the boiling stage) and the dry burning stage of the liquid are respectively carried out.
Since the pre-boiling state is before the boiling state, the temperature of the pot body corresponding to the pre-boiling state should be lower than the temperature of the pot body in the boiling state, and therefore, when the temperature of the bottom of the pot and/or the temperature of the wall of the pot are greater than the preset boiling detection temperature and less than or equal to the preset boiling detection temperature, it is determined whether the articles in the pot are in the pre-boiling state, and in addition, as can be seen from fig. 4, when the articles in the pot are in the small boiling stage, the temperature change rate of the pot is in a descending trend and the change rate is not 0, so that the embodiment of the present application is limited, when the temperature change rate K of the pot is less than or equal to the preset boiling temperature change rate, it is determined that the state of the articles in the pot is in the pre-boiling state, for example, the preset pre-boiling temperature change rate may be 0.7.
308, if the temperature of the pot bottom and/or the temperature of the pot wall are/is greater than the preset boiling detection temperature and less than or equal to the preset dry-burning detection temperature, judging whether the temperature change rate K of the pot body is less than or equal to the preset boiling temperature change rate;
In steps 308 and 309, a detection mode of the boiling state of the contents in the pan is defined. Similar to the detection of the pre-boiling state, when the temperature of the bottom of the pan and/or the temperature of the wall of the pan is greater than the preset boiling detection temperature but less than or equal to the preset dry-fire detection temperature, it is determined from fig. 4 that the rate of change of the temperature of the pan is almost 0 when the liquid is boiling, so that the present embodiment is limited, when the rate of change of the temperature of the pan K is less than or equal to the preset boiling rate of change of the temperature, the state of the article in the pan is determined to be the boiling state, wherein the preset boiling rate of change of the temperature may be a value slightly greater than 0, for example, 0.1.
Step 310, if the temperature of the pot bottom and/or the temperature of the pot wall are/is greater than the preset dry-burning detection temperature, judging whether the temperature change rate K of the pot body is greater than the preset dry-burning temperature change rate;
and 311, if the temperature change rate K of the pot body is greater than the preset dry-burning temperature change rate, outputting the state of the articles in the pot as a dry-burning state.
In steps 310 and 311, a detection method for the dry-heating state of the articles in the pot is defined, similar to the detection of the pre-boiling state and the boiling state, when the temperature of the pot is higher than the preset dry-heating temperature change rate, the judgment of whether the articles in the pot are in the dry-heating state is started, and the dry-heating state is the last state of liquid heating, so the upper limit value of the temperature of the pot does not need to be defined. Similarly, as can be seen from fig. 4, when the liquid is dried, the change rate of the pan body temperature is greater than 0, and the pan body temperature shows an unstable change trend, so that the present embodiment of the application is limited, when the change rate K of the pan body temperature is greater than the preset change rate of the dry-burning temperature, the state of the articles in the pan is determined to be a dry-burning state, wherein the preset change rate of the dry-burning temperature and the preset change rate of the boiling temperature may have the same value, or may have a value slightly greater than the preset change rate of the boiling temperature, for example, 0.2.
In addition, in steps 306 to 311, after the state of the articles in the pan is determined, the cooker and the pan can be controlled to perform corresponding actions according to the state, for example, when the articles are pre-boiling or boiling, the pan can be controlled to remind the user that the articles in the pan are about to be boiled or have been boiled by emitting a warning sound, a light warning light, and the like, and when the articles are dry-boiled, the cooker can be controlled to turn down the power or turn off after a period of time.
The method for detecting the pre-boiling, boiling and dry-cooking states of the articles in the pot defined in the above steps 306 to 311 may be any one of the states, or may be a plurality of states. In addition, when detecting a certain state, the upper limit of the temperature of the pot body is not limited, and the specific steps are as follows: when the temperature of the pot body is higher than the preset boiling detection temperature, starting a pre-boiling state judgment program; when the temperature of the pot body is higher than the preset boiling detection temperature, closing the pre-boiling state judgment program and starting the boiling state judgment program; and when the temperature of the pot body is higher than the preset dry-burning detection temperature, closing the boiling state judgment program and starting the dry-burning state judgment program.
The various state determination procedures may be consistent with the determination manners defined in the above-mentioned 306 to 311, or may specifically define the range of the pot body temperature change rate corresponding to each state, and define the upper limit and the lower limit of the pot body temperature change rate for each state, for example, the upper limit and the lower limit of the pot body temperature change rate corresponding to the pre-boiling state are 0.7 and 0.1, the upper limit and the lower limit of the pot body temperature change rate corresponding to the boiling state are 0.1 and 0, respectively, and the upper limit and the lower limit of the pot body temperature change rate corresponding to the dry-burning state are 1.3 and 0.1, respectively.
Further, as a specific implementation of the method in fig. 1, an embodiment of the present application provides an apparatus for detecting a state of an article in a pan, as shown in fig. 5, the apparatus includes: a pot body temperature detection module 51, a temperature change rate calculation module 52 and a state analysis module 53.
The pot body temperature detection module 51 is used for detecting the temperature of the pot body through the temperature sensing device and transmitting the detected temperature of the pot body to the microprocessor;
the temperature change rate calculation module 52 is used for calculating the temperature change rate of the pot body by the microprocessor according to the temperature of the pot body;
and the state analysis module 53 is configured to analyze the state of the articles in the pot according to the pot body temperature, the pot body temperature change rate, and a preset state temperature change rate threshold.
In a specific application scenario, as shown in fig. 6, the temperature change rate calculation module 52 is specifically configured to fit the pot body temperature and the detection time corresponding to the pot body temperature according to a preset unitary linear fitting model if the pot body temperature is greater than a preset change rate analysis threshold, so as to obtain a pot body temperature change rate K, where the unitary linear fitting model is y ═ kx + b, y is the pot body temperature, x is the detection time, and b is a fitting constant.
In a specific application scenario, the temperature sensing device includes a pan bottom temperature sensing device and/or a pan wall temperature sensing device, and when the temperature sensing device includes the pan bottom temperature sensing device and the pan wall temperature sensing device, the pan body temperature detection module 51 is specifically configured to detect the pan bottom temperature and the pan wall temperature through the pan bottom temperature sensing device and the pan wall temperature sensing device.
In a specific application scenario, when the temperature sensing device includes a pan bottom temperature sensing device and a pan wall temperature sensing device, the temperature change rate calculation module 52 specifically includes: first change rate calculation section 521, second change rate calculation section 522, third change rate calculation section 523, and fourth change rate calculation section 524.
The first change rate calculation unit 521 is configured to fit the pot bottom temperature and the detection time according to a preset unary linear fitting model if the pot bottom temperature and/or the pot wall temperature are/is greater than a preset change rate analysis threshold, so as to obtain a pot bottom temperature change rate k 1;
the second change rate calculation unit 522 is configured to fit the pot wall temperature and the detection time according to a preset unary linear fitting model to obtain a pot wall temperature change rate k 2;
a third change rate calculation unit 523, configured to fit the absolute value of the difference between the temperature of the pot bottom and the temperature of the pot wall and the detection time according to a preset unary linear fitting model, so as to obtain a change rate k3 of the temperature difference between the pot bottom and the pot wall;
and a fourth change rate calculation unit 524, configured to add the absolute value of the pan bottom temperature change rate K1, the absolute value of the pan wall temperature change rate K2, and the absolute value of the pan bottom and pan wall temperature difference change rate K3 to obtain a pan body temperature change rate K.
In a specific application scenario, when the temperature sensing device includes a pan bottom temperature sensing device and a pan wall temperature sensing device, the state analysis module 53 specifically includes: boiling state determination section 531 and boiling state output section 532.
A boiling state determination unit 531 for determining whether the pot temperature change rate K is less than or equal to a preset boiling temperature change rate if the pot bottom temperature and/or the pot wall temperature is greater than the preset boiling detection temperature and less than or equal to the preset dry-fire detection temperature;
a boiling state output unit 532, configured to output the state of the articles in the pot as a boiling state if the pot temperature change rate K is less than or equal to a preset boiling temperature change rate.
In a specific application scenario, when the temperature sensing device includes a pan bottom temperature sensing device and a pan wall temperature sensing device, the state analysis module 53 specifically includes: a dry-fire state determination unit 533 and a dry-fire state output unit 534.
A dry-burning state determining unit 533, configured to determine whether the pot body temperature change rate K is greater than a preset dry-burning temperature change rate if the pot bottom temperature and/or the pot wall temperature is greater than the preset dry-burning detection temperature;
and the dry-burning state output unit 534 is used for outputting the state of the articles in the pot to be in a dry-burning state if the temperature change rate K of the pot is greater than the preset dry-burning temperature change rate.
In a specific application scenario, when the temperature sensing device includes a pan bottom temperature sensing device and a pan wall temperature sensing device, the state analysis module 53 specifically includes: a pre-boiling state determination unit 535, and a pre-boiling state output unit 536.
A pre-boiling state determination unit 535, configured to determine whether the pot temperature change rate K is less than or equal to a preset pre-boiling temperature change rate if the pot bottom temperature and/or the pot wall temperature is greater than the preset pre-boiling detection temperature and is less than or equal to the preset boiling detection temperature;
a pre-boiling state output unit 536, configured to output the state of the articles in the pot as a pre-boiling state if the pot temperature change rate K is less than or equal to a preset pre-boiling temperature change rate.
In a specific application scenario, the pan body temperature detection module 51 is specifically configured to detect the pan body temperature through the temperature sensing device according to a preset detection period; the temperature change rate calculating module 52 is specifically configured to calculate a pot body temperature change rate according to the pot body temperatures corresponding to at least three consecutive preset detection periods.
It should be noted that, other corresponding descriptions of the functional units related to the device for detecting the status of an item in a pan provided by the embodiment of the present application may refer to the corresponding descriptions in fig. 2 and fig. 3, and are not repeated herein.
Based on the above-mentioned methods as shown in fig. 2 and 3, correspondingly, the present application also provides a storage medium, on which a computer program is stored, which when executed by a processor implements the above-mentioned method for detecting the status of the contents in the pot as shown in fig. 2 and 3.
Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the implementation scenarios of the present application.
Based on the above methods shown in fig. 2 and fig. 3 and the virtual device embodiments shown in fig. 5 and fig. 6, in order to achieve the above object, an embodiment of the present application further provides a computer device, which may specifically be a personal computer, a server, a network device, and the like, where the computer device includes a storage medium and a processor; a storage medium for storing a computer program; a processor for executing a computer program to implement the above-described method for detecting the status of the items in the pot as shown in fig. 2 and 3.
Optionally, the computer device may also include a user interface, a network interface, a camera, Radio Frequency (RF) circuitry, sensors, audio circuitry, a WI-FI module, and so forth. The user interface may include a Display screen (Display), an input unit such as a keypad (Keyboard), etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (e.g., a bluetooth interface, WI-FI interface), etc.
It will be appreciated by those skilled in the art that the present embodiment provides a computer device architecture that is not limiting of the computer device, and that may include more or fewer components, or some components in combination, or a different arrangement of components.
The storage medium may further include an operating system and a network communication module. An operating system is a program that manages and maintains the hardware and software resources of a computer device, supporting the operation of information handling programs, as well as other software and/or programs. The network communication module is used for realizing communication among components in the storage medium and other hardware and software in the entity device.
Through the above description of the embodiments, those skilled in the art can clearly understand that the present application can be implemented by software and a necessary general hardware platform, and can also be implemented by hardware by detecting the temperature of the pot body through a preset temperature sensing device, and calculating the change rate corresponding to the temperature of the pot body by using a microprocessor, so as to determine the state of the articles in the pot based on the preset state temperature change rate threshold. With prior art in, rely on and detect pot temperature to carry out state analysis according to the temperature rate of change in the pot and compare, this application detects pot body temperature, can avoid direct measurement pot temperature to lead to the interior article of pot to pollute, and combine pot body temperature and temperature rate of change to carry out the analysis, promoted the accuracy of state judgement.
Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above application serial numbers are for description purposes only and do not represent the superiority or inferiority of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.
Claims (11)
1. An apparatus for detecting the condition of an item in a pot, comprising:
the temperature sensing device is arranged on the pot wall and used for detecting the temperature of the pot body, the temperature sensing device is arranged in the interlayer of the pot wall and comprises a pot bottom temperature sensing device and a pot wall temperature sensing device, the pot bottom temperature sensing device is arranged at the position, close to the inner side wall of the pot body, of the bottom of the pot body, the pot wall temperature sensing device is arranged at the position, close to the outer side wall of the pot body, of the bottom of the pot body, and the pot body temperature comprises the pot bottom temperature corresponding to the pot bottom temperature sensing device and the pot wall temperature corresponding to the pot wall temperature sensing device;
the microprocessor is connected with the temperature sensing device and used for calculating the temperature change rate of the pot body according to the temperature of the pot body and analyzing the state of articles in the pot according to the temperature change rate of the pot body;
if the pot bottom temperature and/or the pot wall temperature are/is larger than a preset change rate analysis threshold, calculating the variance of the pot bottom temperature and the pot wall temperature by a mathematical statistical method, fitting the pot bottom temperature and the pot wall temperature to obtain a relative value of the pot bottom temperature and a relative value of the pot wall temperature, and fitting the relative value of the pot bottom temperature and the detection time according to a preset unitary linear fitting model to obtain a pot bottom temperature change rate k 1; the preset change rate analysis threshold value is determined according to the state to be detected;
fitting the relative value of the pot wall temperature and the detection time according to the preset unary linear fitting model to obtain a pot wall temperature change rate k 2;
fitting the absolute value of the difference between the relative value of the temperature of the pot bottom and the relative value of the temperature of the pot wall and the detection time according to the preset unary linear fitting model to obtain the change rate k3 of the temperature difference between the pot bottom and the pot wall;
and adding the absolute value of the pot bottom temperature change rate K1, the absolute value of the pot wall temperature change rate K2 and the absolute value of the pot bottom and pot wall temperature difference change rate K3 to obtain the pot body temperature change rate K.
2. A pot comprising a pot body and the device for detecting the state of an article in the pot as claimed in claim 1.
3. A state detecting method of an item in a pot, which is used for the state detecting apparatus of the item in a pot as claimed in claim 1 or the pot as claimed in claim 2, the method comprising:
detecting the temperature of a pot body through a temperature sensing device, and transmitting the detected temperature of the pot body to a microprocessor, wherein the temperature of the pot body comprises the bottom temperature corresponding to the bottom temperature sensing device and the wall temperature corresponding to the wall temperature sensing device;
if the pot bottom temperature and/or the pot wall temperature are/is larger than a preset change rate analysis threshold value, calculating the variance of the pot bottom temperature and the pot wall temperature by a mathematical statistical method, fitting the pot bottom temperature and the pot wall temperature to obtain a relative value of the pot bottom temperature and a relative value of the pot wall temperature, and fitting the relative value of the pot bottom temperature and the detection time according to a preset unitary linear fitting model to obtain a pot bottom temperature change rate k 1; the preset change rate analysis threshold value is determined according to the state to be detected; fitting the relative value of the pot wall temperature and the detection time according to the preset unitary linear fitting model to obtain a pot wall temperature change rate k 2; fitting the absolute value of the difference between the relative value of the temperature of the pot bottom and the relative value of the temperature of the pot wall and the detection time according to the preset unary linear fitting model to obtain the change rate k3 of the temperature difference between the pot bottom and the pot wall; adding the absolute value of the pot bottom temperature change rate K1, the absolute value of the pot wall temperature change rate K2 and the absolute value of the pot bottom and pot wall temperature difference change rate K3 to obtain the pot body temperature change rate K;
and analyzing the state of the articles in the pot according to the pot body temperature, the pot body temperature change rate and a preset state temperature change rate threshold value.
4. The method as claimed in claim 3, wherein the calculating the pan body temperature change rate according to the pan body temperature specifically comprises:
and if the pot body temperature is greater than a preset change rate analysis threshold value, fitting the pot body temperature and the detection time corresponding to the pot body temperature according to a preset unary linear fitting model to obtain the pot body temperature change rate K, wherein the unary linear fitting model is y = kx + b, y is the pot body temperature, x is the detection time, and b is a fitting constant.
5. The method as claimed in claim 4, wherein the temperature sensing device comprises the pan bottom temperature sensing device and the pan wall temperature sensing device, and the detecting of the pan body temperature by the temperature sensing device specifically comprises:
the pot bottom temperature and the pot wall temperature are detected through the pot bottom temperature sensing device and the pot wall temperature sensing device.
6. The method as claimed in claim 5, wherein when the temperature sensing device comprises the pan bottom temperature sensing device and the pan wall temperature sensing device, the analyzing the state of the contents in the pan according to the pan body temperature, the pan body temperature change rate and a preset state temperature change rate threshold value specifically comprises:
if the pot bottom temperature and/or the pot wall temperature are/is greater than a preset boiling detection temperature and less than or equal to a preset dry-burning detection temperature, judging whether the pot body temperature change rate K is less than or equal to a preset boiling temperature change rate;
and if the temperature change rate K of the pot body is less than or equal to the preset boiling temperature change rate, outputting the state of the articles in the pot as a boiling state.
7. The method as claimed in claim 5, wherein when the temperature sensing device comprises the pan bottom temperature sensing device and the pan wall temperature sensing device, the analyzing the state of the contents in the pan according to the pan body temperature, the pan body temperature change rate and a preset state temperature change rate threshold value specifically comprises:
if the pot bottom temperature and/or the pot wall temperature are/is greater than the preset dry-burning detection temperature, judging whether the pot body temperature change rate K is greater than the preset dry-burning temperature change rate;
and if the temperature change rate K of the pot body is greater than the preset dry-burning temperature change rate, outputting the state of the articles in the pot as a dry-burning state.
8. The method as claimed in claim 5, wherein when the temperature sensing device comprises the pan bottom temperature sensing device and the pan wall temperature sensing device, the analyzing the state of the contents in the pan according to the pan body temperature, the pan body temperature change rate and a preset state temperature change rate threshold value specifically comprises:
if the pot bottom temperature and/or the pot wall temperature are/is greater than a preset boiling detection temperature and less than or equal to the preset boiling detection temperature, judging whether the pot body temperature change rate K is less than or equal to a preset pre-boiling temperature change rate;
and if the temperature change rate K of the pot body is less than or equal to the preset boiling temperature change rate, outputting the state of the articles in the pot as a pre-boiling state.
9. The method as claimed in claim 3, wherein the detecting the temperature of the pot body by the temperature sensing device specifically comprises:
detecting the temperature of the pot body through the temperature sensing device according to a preset detection period;
according to pot body temperature, calculate pot body temperature rate of change, specifically include:
and calculating the temperature change rate of the pot body according to the temperature of the pot body corresponding to at least three continuous preset detection periods.
10. A storage medium on which a computer program is stored, characterized in that the program, when being executed by a processor, implements a method for detecting the condition of an item in a pan as claimed in any one of claims 3 to 9.
11. A computer apparatus comprising a storage medium, a processor and a computer program stored on the storage medium and executable on the processor, characterized in that the processor implements the method for detecting the state of an item in a pan according to any one of claims 3 to 9 when executing the program.
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