CN108594898B - Oven temperature control method and device and computer readable storage medium - Google Patents
Oven temperature control method and device and computer readable storage medium Download PDFInfo
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- CN108594898B CN108594898B CN201810390949.5A CN201810390949A CN108594898B CN 108594898 B CN108594898 B CN 108594898B CN 201810390949 A CN201810390949 A CN 201810390949A CN 108594898 B CN108594898 B CN 108594898B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0261—For cooking of food
- H05B1/0263—Ovens
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Abstract
The invention discloses an oven temperature control method, which comprises the following steps: detecting the current temperature inside the oven; calculating the deviation between the current temperature and a preset temperature; calculating the on-off time ratio of the relay according to the deviation and a preset mapping relation between the on-off time ratio of the oven relay and the deviation; and controlling the working state of the relay according to the on-off time ratio. The invention also discloses an oven temperature control device and a computer readable storage medium. The invention improves the temperature control accuracy of the oven.
Description
Technical Field
The invention relates to the technical field of ovens, in particular to an oven temperature control method, an oven temperature control device and a computer readable storage medium.
Background
With the improvement of living standard, the oven has been widely applied, bringing great convenience to people's daily life. At present, when the food is heated by using the oven, the measured temperature is generally compared with the set temperature of the user, and the heating is performed if the measured temperature is lower than the set temperature, and the heating is stopped if the measured temperature is higher than the set temperature. Because the heating pipe is utilized to heat the oven working area, a certain temperature change delay effect exists, so that the oven temperature obtained by actual control can fluctuate greatly, the situation that the temperature is too high or too low easily occurs, and the temperature control accuracy of the oven is not high.
Disclosure of Invention
The invention mainly aims to provide an oven temperature control method, an oven temperature control device and a computer readable storage medium, and aims to solve the technical problem that the accuracy of oven temperature control is not high in the prior art.
In order to achieve the above object, the present invention provides an oven temperature control method, including the steps of:
detecting the current temperature inside the oven;
calculating the deviation between the current temperature and a preset temperature;
calculating the on-off time ratio of the relay according to the deviation and a preset mapping relation between the on-off time ratio of the oven relay and the deviation;
and controlling the working state of the relay according to the on-off time ratio.
Preferably, after the step of calculating the deviation of the oven temperature according to the current temperature and the preset temperature, the method further includes:
and when the deviation is a negative value, outputting an electrifying signal to the relay to control the relay to be always in an electrified state.
Preferably, the step of detecting the current temperature inside the oven includes:
and periodically detecting the current temperature inside the oven according to a preset detection period.
Preferably, the step of calculating the on-off time ratio of the relay according to the deviation and a preset mapping relationship between the on-off time ratio of the oven relay and the deviation comprises:
and calculating the on-off time ratio of the relay in the next period according to the calculated deviation in the current period and the preset mapping relation between the on-off time ratio of the oven relay and the deviation.
Preferably, the oven temperature control method further comprises the steps of:
and if the current period is the first period, determining that the on-off time ratio of the relay in the current period is a preset on-off time ratio.
Preferably, the step of calculating the on-off time ratio of the relay in the next period according to the calculated deviation in the current period and a preset mapping relationship between the on-off time ratio of the oven relay and the deviation includes:
if the deviation in the current period is a negative value, determining that the on-off time ratio of the relay in the next period is 1;
if the deviation in the current period is a positive value and is smaller than the preset deviation, determining that the on-off time ratio of the relay in the next period is equal to the on-off time ratio in the current period;
and if the deviation in the current period is greater than or equal to the preset deviation, calculating the on-off time ratio of the relay in the next period according to the deviation in the current period.
Preferably, if the deviation in the current period is greater than or equal to the preset deviation, the step of calculating the on-off time ratio of the relay in the next period according to the deviation in the current period includes:
if the deviation in the current period is greater than or equal to the preset deviation, a preset calculation formula u (k +1) ═ u (k) + k is adoptedp*E(k)-ki*E(k-1)+kdE (k-2), calculating the on-off time ratio of the relay in the next period;
wherein u (k +1) is the on-off time ratio of the relay in the next period, u (k) is the on-off time ratio of the relay in the current period, E (k) is the deviation in the current period, E (k-1) is the deviation in the previous period, E (k-2) is the deviation in the previous period, kp、ki、kdIs a preset coefficient.
Preferably, the step of detecting the current temperature inside the oven includes:
and detecting the current temperature in the oven cavity by using an NTC negative temperature coefficient temperature sensor.
In addition, in order to achieve the above object, the present invention further provides an oven temperature control device, including: a memory, a processor and an oven temperature control program stored on the memory and executable on the processor, the oven temperature control program when executed by the processor implementing the steps of the oven temperature control method as described above.
Furthermore, to achieve the above object, the present invention also provides a computer readable storage medium having an oven temperature control program stored thereon, which when executed by a processor implements the steps of the oven temperature control method as described above.
According to the scheme provided by the invention, the current temperature in the oven is detected, the deviation between the current temperature and the preset temperature is calculated, the on-off time ratio of the oven relay is determined according to the deviation, and the working state of the relay is controlled according to the determined on-off time ratio so as to adjust the output power of the heating pipe in the oven. Compared with a mode of directly controlling whether the heating is carried out according to the current temperature, the heating control is carried out by determining the corresponding on-off time ratio of the relay and controlling the working state of the relay according to the determined on-off time ratio, so that the accuracy of the temperature control of the oven is improved.
Drawings
FIG. 1 is a schematic structural diagram of an oven temperature control device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for controlling the temperature of an oven according to the present invention;
FIG. 3 is a schematic diagram of temperature rise curves for heating by a conventional temperature control method and a temperature control method according to the present invention, respectively.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The solution of the embodiment of the invention is mainly as follows: the method comprises the steps of calculating the deviation between the current temperature and the preset temperature by detecting the current temperature inside the oven, determining the on-off time ratio of an oven relay according to the deviation, and controlling the working state of the relay according to the determined on-off time ratio so as to adjust the output power of a heating pipe inside the oven. By the technical scheme of the embodiment of the invention, the problem of low temperature control accuracy of the oven is solved.
The embodiment of the invention provides an oven temperature control device.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an oven temperature control device in a hardware operating environment according to an embodiment of the present invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
As shown in fig. 1, the oven temperature control device may include: a processor 1001, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the oven thermostat configuration shown in fig. 1 does not constitute a limitation of the oven thermostat and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, and an oven temperature control program.
In the present invention, the oven temperature control device calls an oven temperature control program stored in the memory 1005 through the processor 1001, and executes the following operations:
detecting the current temperature inside the oven;
calculating the deviation between the current temperature and a preset temperature;
calculating the on-off time ratio of the relay according to the deviation and a preset mapping relation between the on-off time ratio of the oven relay and the deviation;
and controlling the working state of the relay according to the on-off time ratio.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
and when the deviation is a negative value, outputting an electrifying signal to the relay to control the relay to be always in an electrified state.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
and periodically detecting the current temperature inside the oven according to a preset detection period.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
and calculating the on-off time ratio of the relay in the next period according to the calculated deviation in the current period and the preset mapping relation between the on-off time ratio of the oven relay and the deviation.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
and if the current period is the first period, determining that the on-off time ratio of the relay in the current period is a preset on-off time ratio.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
if the deviation in the current period is a negative value, determining that the on-off time ratio of the relay in the next period is 1;
if the deviation in the current period is a positive value and is smaller than the preset deviation, determining that the on-off time ratio of the relay in the next period is equal to the on-off time ratio in the current period;
and if the deviation in the current period is greater than or equal to the preset deviation, calculating the on-off time ratio of the relay in the next period according to the deviation in the current period.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
if the deviation in the current period is greater than or equal to the preset deviation, a preset calculation formula u (k +1) ═ u (k) + k is adoptedp*E(k)-ki*E(k-1)+kdE (k-2), calculating the on-off time ratio of the relay in the next period;
wherein u (k +1) is the on-off time ratio of the relay in the next period, u (k) is the on-off time ratio of the relay in the current period, E (k) is the deviation in the current period, E (k-1) is the deviation in the previous period, E (k-2) is the deviation in the previous period, kp、ki、kdIs a preset coefficient.
Further, the processor 1001 may call an oven temperature control program stored in the memory 1005, and also perform the following operations:
and detecting the current temperature in the oven cavity by using an NTC negative temperature coefficient temperature sensor.
According to the scheme, the deviation between the current temperature and the preset temperature is calculated by detecting the current temperature inside the oven, the on-off time ratio of the oven relay is determined according to the deviation, and the working state of the relay is controlled according to the determined on-off time ratio so as to adjust the output power of the heating pipe in the oven. Compared with a mode of directly controlling whether the heating is carried out according to the current temperature, the heating control is carried out by determining the corresponding on-off time ratio of the relay and controlling the working state of the relay according to the determined on-off time ratio, so that the accuracy of the temperature control of the oven is improved.
Based on the hardware structure, the embodiment of the oven temperature control method is provided.
Referring to fig. 2, fig. 2 is a schematic flow chart of a temperature control method of an oven according to a first embodiment of the present invention.
In a first embodiment, the oven temperature control method comprises the following steps:
step S10, detecting the current temperature inside the oven;
step S20, calculating the deviation of the current temperature and a preset temperature;
step S30, calculating the on-off time ratio of the relay according to the deviation and the mapping relation between the preset oven relay on-off time ratio and the deviation;
and step S40, controlling the working state of the relay according to the on-off time ratio.
At present, when the food is heated by using the oven, the measured temperature is generally compared with the set temperature of the user, and the heating is performed if the measured temperature is lower than the set temperature, and the heating is stopped if the measured temperature is higher than the set temperature. Because the heating pipe is utilized to heat the oven working area, a certain temperature change delay effect exists, so that the oven temperature obtained by actual control can fluctuate greatly, the situation of overhigh or overlow temperature is easy to occur, and the taste of food is poor.
In order to improve the accuracy of temperature control of the oven and improve the taste of food heated by the oven, the invention provides an oven temperature control method which is applied to an oven temperature control device. The oven temperature control device can be a device independent of the oven and can also be arranged in the oven.
In this embodiment, when the user heats food with the oven, the user sets the temperature to be reached according to the setting interface of the oven, that is, sets the preset temperature Taim. In the process of heating food, the oven detects the current temperature T inside the oven through the oven temperature control devicenow. Optionally, an NTC (Negative Temperature Coefficient) Temperature sensor is disposed in the oven, and the NTC Temperature sensor detects a current Temperature T in the oven cavitynow。
At the current temperature TnowThen, according to the current temperature TnowAnd a preset temperature TaimCalculating the current temperature TnowAnd a predetermined temperature TaimDeviation between E (T) and Tnow-Taim。
In the embodiment, a mapping relation between the deviation e (t) and the on-off time ratio u (t) of the oven relay is preset. For example, when the deviation e (t) is less than zero,the on-period time ratio u (T) of the oven relay is correspondingly 1, namely when the current temperature T in the oven cavity isnowHas not yet reached the preset temperature TaimAnd (3) determining that the on-period time ratio u (t) of the relay is 1, namely the relay is not powered off. When the deviation e (t) is greater than or equal to zero, a current on-period time ratio u (t) of the oven relay is calculated according to a calculation formula u (t) -u (t-1) + Δ u (t), where u (t-1) is an on-period time ratio of one second of the oven relay, and Δ u (t) is a difference value of the on-period time ratio of the oven relay, which can be calculated according to the deviation e (t), and a specific calculation mode of the deviation e (t) is not limited in this embodiment. After the on-off time ratio u (t) of the oven relay is calculated, the on-off time ratio of the oven relay is adjusted according to the on-off time ratio u (t), and the working state of the relay is controlled to control the output power of the oven heating pipe, so that the proper temperature required by food heating is achieved.
Optionally, when the calculated deviation e (T) is negative, i.e. when the current temperature T in the oven cavity is negativenowDoes not reach the preset temperature TaimAnd when the deviation E (t) is a positive value, outputting an electrifying signal to the relay, controlling the relay to be in an electrifying state all the time, namely controlling the heating pipe of the oven to be heated all the time, and controlling the temperature in the oven to be in a rising state all the time. And when the calculated deviation E (t) is a positive value, calculating the current on-off time ratio u (t) of the oven relay, and controlling the working state of the relay according to the on-off time ratio u (t) so as to adjust the output power of a heating pipe in the oven and achieve the proper temperature required by food heating.
According to the scheme provided by the embodiment, the current temperature inside the oven is detected, the deviation between the current temperature and the preset temperature is calculated, the on-off time ratio of the oven relay is determined according to the deviation, and the working state of the relay is controlled according to the determined on-off time ratio so as to adjust the output power of the heating pipe in the oven. Compared with a mode of directly controlling whether the heating is carried out according to the current temperature, the heating control is carried out by determining the corresponding on-off time ratio of the relay and controlling the working state of the relay according to the determined on-off time ratio, so that the accuracy of the temperature control of the oven is improved.
Further, a second embodiment of the oven temperature control method according to the present invention is proposed based on the first embodiment, and in this embodiment, the step S10 includes:
step a, periodically detecting the current temperature in the oven according to a preset detection period;
the step S30 includes:
and b, calculating the on-off time ratio of the relay in the next period according to the calculated deviation in the current period and the preset mapping relation between the on-off time ratio of the oven relay and the deviation.
In order to further improve the accuracy of the temperature control of the oven, in this embodiment, the on-off time ratio of the oven relay is periodically adjusted. Specifically, the corresponding detection period T is set in advance, for example, the detection period T is set in advance to 1 second. It can be understood by those skilled in the art that the specific duration of the detection period T can be flexibly set according to practical situations, and is not particularly limited.
During the process of heating the oven, periodically detecting the current temperature T inside the oven in each detection period according to the detection period Tnow. Obtaining the current temperature T detected in the current periodnowThen, according to the current temperature TnowAnd a preset temperature TaimCalculating the current temperature TnowAnd a predetermined temperature TaimDeviation between E (k) and Tnow-TaimWhere k is 1,2,3 … …, which indicates that the current detection cycle is the kth detection cycle.
Calculating the current temperature T in the current periodnowAnd a predetermined temperature TaimAfter the deviation E (k), calculating the on-off time ratio u (k +1) of the relay in the next period according to the deviation E (k) in the current period and the preset mapping relation between the on-off time ratio of the oven relay and the deviation.
Optionally, the oven temperature control method further includes:
and c, if the current period is the first period, determining that the on-off time ratio of the relay in the current period is a preset on-off time ratio.
Optionally, a preset on-off time ratio is also preset, and in the process of heating the oven, when the detection period is the first period, the on-off time ratio of the relay in the current period is determined to be the preset on-off time ratio, that is, the on-off time ratio of the relay in the first period is determined to be the preset on-off time ratio. And for the subsequent detection period, according to the operation, based on the deviation E (k) in the current period and the preset mapping relation between the on-off time ratio of the oven relay and the deviation, calculating the on-off time ratio u (k +1) of the relay in the next period.
After the on-off time ratio of the relay in each detection period is determined through the operation mode, the working state of the relay in each detection period is controlled according to the determined on-off time ratio, so that the output power of the heating pipe in the oven is periodically adjusted, and the proper temperature required by food heating is achieved.
According to the scheme provided by the embodiment, the current temperature in the oven is periodically detected according to the preset detection period, the deviation between the current temperature in each period and the preset temperature is calculated according to the detected current temperature in each period, the on-off time ratio of the oven relay in each period is determined according to the calculated deviation, the working state of the relay in each detection period is controlled according to the determined on-off time ratio, the output power of the heating pipe in the oven is periodically adjusted, and therefore the temperature control accuracy of the oven is further improved.
Further, a third embodiment of the oven temperature control method according to the present invention is proposed based on the second embodiment, in this embodiment, the step b includes:
step b1, if the deviation in the current period is a negative value, determining that the on-off time ratio of the relay in the next period is 1;
step b2, if the deviation in the current period is a positive value and is smaller than the preset deviation, determining that the on-off time ratio of the relay in the next period is equal to the on-off time ratio in the current period;
and b3, if the deviation in the current period is greater than or equal to the preset deviation, calculating the on-off time ratio of the relay in the next period according to the deviation in the current period.
In this embodiment, a corresponding preset deviation is preset, and a specific value of the preset deviation can be flexibly set according to an actual situation, without specific limitation. In this embodiment, the current temperature T in the current cycle is calculatednowAnd a predetermined temperature TaimAfter the deviation E (k), comparing the deviation E (k) in the current period with the preset deviation, and judging the sizes of the deviation E (k) and the preset deviation.
If the deviation E (k) in the current period is a negative value, that is, the deviation E (k) in the current period is less than zero, the current temperature T in the current period is indicatednowLess than a predetermined temperature TaimAt this time, heating operation is required, and in order to increase the heating speed, the on-off time ratio of the relay in the next period is determined to be 1, that is, the relay is controlled to be in the energized state all the time in the next period, and the oven is controlled to be in the heating state all the time in the next period.
If the deviation E (k) in the current period is a positive value and is smaller than the preset deviation, that is, the deviation E (k) in the current period is greater than or equal to zero and is smaller than the preset deviation, the current temperature T in the current period is indicatednowSlightly above the preset temperature TaimAt the moment, determining that the on-off time ratio of the relay in the next period is equal to the on-off time ratio in the current period, namely maintaining the working state of the relay unchanged in the next period, thereby controlling the temperature of the oven to be dynamically stabilized at the preset temperature Taim。
If the deviation E (k) in the current period is greater than or equal to the preset deviation, the current temperature T in the current period is also describednowAnd a predetermined temperature TaimThe temperature deviation of the relay is large, at the moment, the on-off time ratio u (k +1) of the relay in the next period is calculated according to the deviation E (k) in the current period, and the on-off time ratio of the relay in the next period is adjusted.
Optionally, the step b3 includes: if the deviation in the current period is greater than or equal to the preset deviation, a preset calculation formula u (k +1) ═ u (k) + k is adoptedp*E(k)-ki*E(k-1)+kdE (k-2), calculating the on-off time ratio of the relay in the next period;
wherein u (k +1) is the on-off time ratio of the relay in the next period, u (k) is the on-off time ratio of the relay in the current period, E (k) is the deviation in the current period, E (k-1) is the deviation in the previous period, E (k-2) is the deviation in the previous period, kp、ki、kdIs a preset coefficient.
If the deviation E (k) in the current period is greater than or equal to the preset deviation, the current temperature T in the current period is also describednowAnd a predetermined temperature TaimThe temperature deviation of the relay is relatively large, and at this time, the on-off time ratio of the relay in the next period is optionally calculated according to the following preset calculation formula:
u(k+1)＝u(k)+kp*E(k)-ki*E(k-1)+kd*E(k-2)；
wherein u (k +1) is the on-off time ratio of the relay to be calculated in the next period, u (k) is the on-off time ratio of the relay in the current period, E (k) is the deviation in the current period, E (k-1) is the deviation in the previous period, E (k-2) is the deviation in the previous period, kp、ki、kdThe specific values of the preset coefficients corresponding to E (k), E (k-1), and E (k-2) are flexibly set according to the actual situation, and are not limited in this embodiment.
By using a preset calculation formula u (k +1) ═ u (k) + kp*E(k)-ki*E(k-1)+kdE (k-2) calculates the on-off time ratio u (k +1) of the relay in the next period, and then controls the working state of the relay in the next period according to the on-off time ratio u (k +1) so as to realize the dynamic stability of the temperature of the oven at the preset temperature Taim。
At an initial current temperature TnowAt 27 ℃ and a predetermined temperature TaimTaking 90 ℃ as an example, an oven heating test is respectively carried out by adopting a traditional temperature control method and the temperature control method of the invention, the temperature performance index in the heating process is recorded, the obtained temperature rise curve is shown in figure 3, and the comparative analysis table of the temperature performance index is shown in table 1.
TABLE 1
As can be seen from table 1, compared with the conventional oven temperature control method, the oven temperature control method of the present invention realizes rapid temperature control of the oven temperature, and can adjust the oven temperature more rapidly and accurately.
According to the scheme provided by the embodiment, different on-off time ratios corresponding to the relay in the next period are determined according to different deviations according to the specific situation of the deviation in the current period, and the working state of the relay in the next period is controlled according to the determined on-off time ratio, so that the output power of the heating pipe in the oven is periodically adjusted, and the temperature control accuracy of the oven is further improved.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where an oven temperature control program is stored on the computer-readable storage medium, and when executed by a processor, the oven temperature control program implements the following operations:
detecting the current temperature inside the oven;
calculating the deviation between the current temperature and a preset temperature;
calculating the on-off time ratio of the relay according to the deviation and a preset mapping relation between the on-off time ratio of the oven relay and the deviation;
and controlling the working state of the relay according to the on-off time ratio.
Further, the oven temperature control program when executed by the processor further implements the following operations:
and when the deviation is a negative value, outputting an electrifying signal to the relay to control the relay to be always in an electrified state.
Further, the oven temperature control program when executed by the processor further implements the following operations:
and periodically detecting the current temperature inside the oven according to a preset detection period.
Further, the oven temperature control program when executed by the processor further implements the following operations:
and calculating the on-off time ratio of the relay in the next period according to the calculated deviation in the current period and the preset mapping relation between the on-off time ratio of the oven relay and the deviation.
Further, the oven temperature control program when executed by the processor further implements the following operations:
and if the current period is the first period, determining that the on-off time ratio of the relay in the current period is a preset on-off time ratio.
Further, the oven temperature control program when executed by the processor further implements the following operations:
if the deviation in the current period is a negative value, determining that the on-off time ratio of the relay in the next period is 1;
if the deviation in the current period is a positive value and is smaller than the preset deviation, determining that the on-off time ratio of the relay in the next period is equal to the on-off time ratio in the current period;
and if the deviation in the current period is greater than or equal to the preset deviation, calculating the on-off time ratio of the relay in the next period according to the deviation in the current period.
Further, the oven temperature control program when executed by the processor further implements the following operations:
if the deviation in the current period is greater than or equal to the preset deviation, a preset calculation formula u (k +1) ═ u (k) + k is adoptedp*E(k)-ki*E(k-1)+kdE (k-2), calculating the on-off time ratio of the relay in the next period;
wherein u (k +1) is the on-off time ratio of the relay in the next period, u (k) is the on-off time ratio of the relay in the current period, E (k) is the deviation in the current period, E (k-1) is the deviation in the previous period, E (k-2) is the deviation in the previous period, kp、ki、kdIs a preset coefficient.
Further, the oven temperature control program when executed by the processor further implements the following operations:
and detecting the current temperature in the oven cavity by using an NTC negative temperature coefficient temperature sensor.
According to the scheme provided by the embodiment, the current temperature inside the oven is detected, the deviation between the current temperature and the preset temperature is calculated, the on-off time ratio of the oven relay is determined according to the deviation, and the working state of the relay is controlled according to the determined on-off time ratio so as to adjust the output power of the heating pipe in the oven. Compared with a mode of directly controlling whether the heating is carried out according to the current temperature, the heating control is carried out by determining the corresponding on-off time ratio of the relay and controlling the working state of the relay according to the determined on-off time ratio, so that the accuracy of the temperature control of the oven is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The oven temperature control method is characterized by comprising the following steps:
detecting the current temperature inside the oven;
calculating the deviation between the current temperature and a preset temperature;
calculating the on-off time ratio of the relay according to the deviation and a preset mapping relation between the on-off time ratio of the oven relay and the deviation;
when the deviation is a negative value, outputting an electrifying signal to the relay to control the relay to be always in an electrifying state;
if the deviation in the current period is a positive value and is smaller than the preset deviation, determining that the on-off time ratio of the relay in the next period is equal to the on-off time ratio in the current period;
if the deviation in the current period is greater than or equal to the preset deviation, a preset calculation formula u (k +1) ═ u (k) + k is adoptedp*E(k)-ki*E(k-1)+kdE (k-2), calculating the on-off time ratio of the relay in the next period;
wherein u (k +1) is the on-off time ratio of the relay in the next period, u (k) is the on-off time ratio of the relay in the current period, E (k) is the deviation in the current period, E (k-1) is the deviation in the previous period, E (k-2) is the deviation in the previous period, kp、ki、kdIs a preset coefficient;
and controlling the working state of the relay according to the on-off time ratio.
2. The oven temperature control method according to claim 1, wherein the step of detecting the current temperature inside the oven comprises:
and periodically detecting the current temperature inside the oven according to a preset detection period.
3. The oven temperature control method according to claim 2, further comprising the steps of:
and if the current period is the first period, determining that the on-off time ratio of the relay in the current period is a preset on-off time ratio.
4. The oven temperature control method according to any one of claims 1 to 3, wherein the step of detecting the current temperature inside the oven comprises:
and detecting the current temperature in the oven cavity by using an NTC negative temperature coefficient temperature sensor.
5. An oven temperature control device, characterized in that the oven temperature control device comprises: a memory, a processor and an oven temperature control program stored on the memory and executable on the processor, the oven temperature control program when executed by the processor implementing the steps of the oven temperature control method according to any one of claims 1-4.
6. A computer-readable storage medium, having an oven temperature control program stored thereon, which when executed by a processor, implements the steps of the oven temperature control method of any one of claims 1-4.
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| CN110658865B (en) * | 2019-09-30 | 2020-12-22 | 杭州师范大学钱江学院 | Temperature control method based on inertial model |
| CN114637231A (en) * | 2020-12-16 | 2022-06-17 | 广东美的厨房电器制造有限公司 | Cooking device, control method thereof and computer readable storage medium |
| CN112773212A (en) * | 2020-12-29 | 2021-05-11 | 深圳拓邦股份有限公司 | Oven temperature control method and device, oven and storage medium |
| CN117055656A (en) * | 2023-09-21 | 2023-11-14 | 深圳市森威尔科技开发股份有限公司 | Compensation type temperature control method and related equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593314A (en) * | 2003-09-09 | 2005-03-16 | 三星电子株式会社 | Electric cooking apparatus and method of controlling heaters thereof |
| CN104266239A (en) * | 2014-10-20 | 2015-01-07 | 广东美的厨房电器制造有限公司 | Control method and system of microwave oven |
| CN204318386U (en) * | 2014-12-19 | 2015-05-13 | 佛山市顺德区美的电热电器制造有限公司 | Novel cooking utensil |
| CN107638090A (en) * | 2016-07-21 | 2018-01-30 | 佛山市顺德区美的电热电器制造有限公司 | Baking machine and its method for heating and controlling |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101755738B1 (en) * | 2009-09-08 | 2017-07-07 | 마이클 알. 애데스 | Sous-vide cooker |
| JP5977069B2 (en) * | 2011-07-08 | 2016-08-24 | 日本電波工業株式会社 | Temperature control circuit of crystal oscillator with thermostatic chamber |
| CN103017217A (en) * | 2012-12-21 | 2013-04-03 | 敦泰科技有限公司 | Micro-wave oven control method, control equipment and micro-wave oven |
| CN203465612U (en) * | 2013-08-01 | 2014-03-05 | 无锡邑文电子科技有限公司 | Temperature control system of hardening oven |
| CN103528361A (en) * | 2013-10-28 | 2014-01-22 | 天津工业大学 | Intelligent drying oven capable of monitoring weight in real time |
| CN104825052A (en) * | 2014-08-20 | 2015-08-12 | 江丽 | Temperature-adjustable intelligent heater and control method therefor |
| CN205068194U (en) * | 2015-10-15 | 2016-03-02 | 佛山市顺德区美的电热电器制造有限公司 | Temperature control system and juice extractor |
| CN105231858A (en) * | 2015-10-27 | 2016-01-13 | 珠海格力电器股份有限公司 | Control method of electric oven temperature field and electric oven |
| CN106765000B (en) * | 2017-01-18 | 2019-04-30 | 广东美的厨房电器制造有限公司 | Electric heating equipment |
| CN107559902B (en) * | 2017-08-28 | 2020-04-17 | 广东美的厨房电器制造有限公司 | Temperature control method and heating cooking device |
-
2018
- 2018-04-26 CN CN201810390949.5A patent/CN108594898B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593314A (en) * | 2003-09-09 | 2005-03-16 | 三星电子株式会社 | Electric cooking apparatus and method of controlling heaters thereof |
| CN104266239A (en) * | 2014-10-20 | 2015-01-07 | 广东美的厨房电器制造有限公司 | Control method and system of microwave oven |
| CN204318386U (en) * | 2014-12-19 | 2015-05-13 | 佛山市顺德区美的电热电器制造有限公司 | Novel cooking utensil |
| CN107638090A (en) * | 2016-07-21 | 2018-01-30 | 佛山市顺德区美的电热电器制造有限公司 | Baking machine and its method for heating and controlling |
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