CN112804772B - Control method, system and device of electric heater and storage medium - Google Patents
Control method, system and device of electric heater and storage medium Download PDFInfo
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- CN112804772B CN112804772B CN202011641190.7A CN202011641190A CN112804772B CN 112804772 B CN112804772 B CN 112804772B CN 202011641190 A CN202011641190 A CN 202011641190A CN 112804772 B CN112804772 B CN 112804772B
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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
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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
- H05B1/0202—Switches
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Abstract
The invention discloses a control method, a system, a device and a storage medium of an electric heater, wherein the electric heater comprises a heating load and a plurality of relays, and the relays are connected in parallel to the heating load, and the method comprises the following steps: acquiring a first instruction, wherein the first instruction comprises a first heating instruction and a first heat preservation Wen Zhiling; periodically detecting the temperature of the cavity of the electric heater according to a preset period; judging whether the temperature of the cavity is lower than a preset temperature or not; if the temperature of the cavity is lower than the preset temperature in two continuous preset periods, controlling a first relay to be switched off according to the first instruction, and controlling a second relay to be switched on, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays except the first relay; the invention can avoid heating interruption caused by relay damage in the heating process, has high reliability and can improve the satisfaction degree of users; the invention can be widely applied to the technical field of electric heaters.
Description
Technical Field
The invention relates to the technical field of electric heaters, in particular to a method, a system, a device and a storage medium for controlling an electric heater.
Background
The electric heater is an electric device for converting electric energy into heat energy, and comprises a microwave oven, an electric cooker, an electric mattress, an electric soldering iron, an electric water heater and the like; in the prior art, the main heating load of the electric heater is controlled by a single relay, for example, different driving circuits can be selected by a control circuit of a microwave oven to drive heating elements matched with corresponding heating types to work according to different heating types (barbecue, microwave or hybrid and the like), but the driving circuits for driving the heating elements to work usually only adopt the series combination of a single triode and a single relay to realize the conduction of the heating circuit, so that the use reliability of the circuit structure is not high, and in the heating process, whether the relay is damaged or not can not be known in advance, and further cooking interruption can be caused by long-time control of the aging or damage of the relay of the load, and poor use experience can be brought to users; and once the relay is damaged, it cannot be heated, and the cooking fails due to the interruption of heating.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method, a system, a device and a storage medium for controlling an electric heater.
A control method of an electric heater according to an embodiment of a first aspect of the invention, the electric heater including a heating load and a plurality of relays connected in parallel to the heating load, the control method including:
acquiring a first instruction, wherein the first instruction comprises any one of a first heating instruction and a first heat preservation instruction;
periodically detecting the temperature of the cavity of the electric heater according to a preset period;
judging whether the cavity temperature is lower than a preset temperature or not;
if the temperature of the cavity is lower than the preset temperature in two continuous preset periods, controlling a first relay to be switched off according to the first instruction, and controlling a second relay to be switched on, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays other than the first relay.
In the embodiment of the invention, the electric heater is connected in parallel to the heating load by adopting a plurality of relays; in the heating and heat preservation processes, whether the temperature of a cavity of the electric heater is lower than the preset temperature in two continuous preset periods or not can be judged, if yes, the closed relay in the current state is controlled to be switched off according to a first instruction, and relays except the first relay in the plurality of relays are controlled to be switched on, so that heating interruption caused by damage of the relays in the heating process can be avoided.
Optionally, if the temperature of the cavity is less than the preset temperature in two consecutive preset periods, controlling the first relay to be turned off according to the first instruction, and controlling the second relay to be turned on, further comprising:
and acquiring and recording abnormal data, wherein the abnormal data is used for displaying the number of the damaged relays.
According to the embodiment of the invention, whether the cavity temperature of the electric heater is lower than the preset temperature in two continuous preset periods or not can be detected, whether the closed relay in the current state is damaged or not can be judged, and when the damage of the closed relay in the current state is detected, the number of damaged relays is recorded, so that the damage condition of the relay can be visually displayed; and providing basis for the subsequent control of the opening and closing of the relay.
Optionally, the control method further includes:
and when all the relays are damaged, controlling the electric heater to stop working.
In the embodiment of the invention, if all the relays are damaged, the electric heater is directly controlled to stop working; and fault repair can be carried out in time.
Optionally, the control method further includes:
and if the cavity temperature does not meet the condition that the cavity temperature is lower than the preset temperature in two continuous preset periods, controlling the first relay to be continuously closed.
In the embodiment of the invention, if the temperature of the cavity does not meet the condition that the temperature is less than the preset temperature in two continuous preset periods, the first relay is normal, at the moment, the first relay is controlled to be continuously closed, and the other relays are switched off, so that the electric heater can be controlled to be continuously heated; the heating process is completed.
Optionally, the control method further includes:
and when a second instruction is received, controlling the first relay to be switched off according to the second instruction, and controlling the second relay to be switched on, wherein the second instruction comprises a second heating instruction and a second heat preservation instruction.
In this embodiment, if it is determined that the first relay is normal, the first relay continues to be closed, and at this time, if a new instruction, i.e., the second instruction, is received again, the first relay is disconnected, the second relay is closed, and the second relay is switched to continue to control relay heating or heat preservation; through switching normal relay and controlling heating or heat preservation in turn, can avoid single relay long-time running and lead to ageing or damaging, can prolong the life of relay.
A control system of an electric heater according to an embodiment of a second aspect of the present invention, the electric heater including a heating load and a plurality of relays connected in parallel to the heating load, the control system including:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first instruction, and the first instruction comprises any one of a first heating instruction and a first heat preservation instruction;
the detection module is used for periodically detecting the cavity temperature of the electric heater according to a preset period;
the judging module is used for judging whether the cavity temperature is lower than a preset temperature or not;
the control module is used for controlling a first relay to be switched off according to the first instruction and controlling a second relay to be switched on if the temperature of the cavity is lower than a preset temperature in two continuous preset periods, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays other than the first relay.
According to the control system of the electric heater, after the acquisition module acquires the first instruction, the detection module is used for periodically detecting the cavity temperature of the electric heater according to a preset period, the judgment module is used for judging whether the cavity temperature is lower than the preset temperature or not, if the cavity temperature is lower than the preset temperature in two continuous preset periods, the first relay is damaged, at the moment, the first relay is controlled to be switched off according to the first instruction, the second relay is controlled to be switched on, heating interruption caused by damage of the relay in the heating process can be avoided, the control system of the electric heater is high in reliability, and the user satisfaction degree can be improved.
Optionally, the control module comprises:
and the acquiring and recording unit is used for acquiring and recording abnormal data, and the abnormal data is used for displaying the number of the damaged relays.
In the embodiment, the control module can control the normal relays to be closed and the damaged relays to be opened according to the judgment result, and can also acquire and record abnormal data, wherein the abnormal data is used for displaying the number of the damaged relays; further, the damage condition of the relay can be intuitively displayed; and a basis is provided for the subsequent control of the opening and closing of the relay.
A control apparatus for an electric heater according to an embodiment of a third aspect of the present invention includes:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one program causes the at least one processor to implement the control method according to the embodiment of the first aspect.
The control device of the electric heater according to the embodiment of the invention has at least the following beneficial effects:
the program on the memory is executed through the processor, whether the cavity temperature of the electric heater is lower than the preset temperature in two continuous preset periods or not can be detected in the heating process, whether the closed relay in the current state is damaged or not can be judged, if the closed relay in the current state is damaged, the closed relay in the current state is controlled to be opened according to the first instruction, and the relays except the first relay in the plurality of relays are controlled to be closed, so that the heating interruption caused by the damage of the relay in the heating process can be avoided, the control method of the electric heater in the embodiment of the invention has high reliability, and the satisfaction degree of a user can be improved.
A home device according to a fourth aspect of the present invention includes the control system according to the second aspect of the present invention or the control apparatus according to the third aspect of the present invention.
In the embodiment of the invention, the household appliance comprises a heating load and a plurality of relays, the relays are connected to the heating load in parallel and comprise an acquisition module, a detection module, a judgment module and a control module, the reliability of the household appliance is high, the user experience is good, and the heating interruption caused by the damage of the relays in the heating process can be avoided.
A computer-readable storage medium according to an embodiment of the fifth aspect of the present invention has stored thereon a processor-executable program which, when executed by a processor, is configured to implement the control method as embodied by the first aspect.
The computer-readable storage medium according to the embodiment of the invention has at least the following advantages:
by executing the program executable by the processor, whether the cavity temperature of the electric heater is lower than the preset temperature in two continuous preset periods can be detected in the heating process so as to judge whether the closed relay in the current state is damaged, if the closed relay in the current state is damaged, the closed relay in the current state is controlled to be opened according to a first instruction, and the relays except the first relay in the plurality of relays are controlled to be closed, so that the heating interruption caused by the damage of the relay in the heating process can be avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which,
FIG. 1 is a diagram illustrating the connection between a plurality of relays and a heating load according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method of controlling an electric heater according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating abnormal temperature increase detection according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a cooling abnormality detection method according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating an overall detection process of an electric heater according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a control device for an electric heater according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, and the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood to exclude the essential numbers. If there is a description to first, second, third etc. for the purpose of distinguishing between technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated or to implicitly indicate the precedence of technical features indicated.
In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.
First, a connection relationship between a heating load and a plurality of relays in an electric heater will be described.
Referring to fig. 1, in fig. 1, NET1 is a heating load control port 1 of an electric heater main control chip; NET2 is a heating load control port 2 of the electric heater main control chip; heater is the actual heating load of the electric Heater (heating device such as electric heating tube); RLY1 is a relay 1, RLY2 is a relay 2; in the embodiment, 2 relays are connected in parallel to an actual heating load, and by closing any one of the relays, a circuit can be conducted to control the heating load to heat; in this embodiment, more than 2 relays, for example, 3 relays, 4 relays or even more relays may be connected in parallel to the heating load, and similarly, by closing any one of the relays connected in parallel, the circuit may be conducted to control the heating load to heat.
Referring to fig. 2, an embodiment of the present invention provides a method of controlling an electric heater including a heating load and a plurality of relays connected in parallel to the heating load, the method including:
s100, acquiring a first instruction, wherein the first instruction comprises any one of a first heating instruction and a first heat preservation instruction;
s101, periodically detecting the cavity temperature of the electric heater according to a preset period;
s102, judging whether the temperature of the cavity is lower than a preset temperature or not;
s103, if the temperature of the cavity is lower than a preset temperature in two continuous preset periods, controlling a first relay to be switched off according to the first instruction, and controlling a second relay to be switched on, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays other than the first relay.
In the embodiment of the invention, when the obtained first command is a first heating command, the control method is applied to a heating and temperature-raising process, and specifically, a heating load in the electric heater and a plurality of relays may be in circuit connection according to fig. 1; in the heating process, the control method of the electric heater provided by the embodiment of the invention can judge whether the closed relay in the current state is damaged or not by detecting whether the temperature of the cavity of the electric heater is lower than the preset temperature in two continuous preset periods or not, and if the closed relay in the current state is detected to be damaged, the closed relay in the current state is controlled to be opened according to the first instruction, and the relays except the first relay in the plurality of relays are controlled to be closed.
In the embodiment of the invention, when the obtained first command is first heat preservation Wen Zhiling, the control method is applied to the heat preservation process, and specifically, the heating load and the plurality of relays in the electric heater can be in circuit connection according to fig. 1; after heating is finished, a heat preservation program is executed, similarly, the control method can judge whether the closed relay in the current state is damaged or not by detecting whether the temperature of the cavity of the electric heater is lower than the preset temperature in two continuous preset periods or not, and if the closed relay in the current state is detected to be damaged, the closed relay in the current state is controlled to be opened according to a first instruction, and relays except the first relay in the plurality of relays are controlled to be closed.
Specifically, after step S103, that is, if the temperature of the cavity is less than the preset temperature in two consecutive preset periods, the method further includes, after controlling the first relay to be turned off according to the first instruction and controlling the second relay to be turned on:
and S104, acquiring and recording abnormal data, wherein the abnormal data is used for displaying the number of the damaged relays.
In the embodiment, the damage condition of the relay can be visually obtained by acquiring and recording the abnormal data, so that a basis is provided for subsequently controlling the opening and closing of the relay.
Specifically, the control method further includes:
and S105, when all the relays are damaged, controlling the electric heater to stop working.
In the embodiment, whether all relays in the electric heater are damaged or not can be known by reading the content in the abnormal data, and if all relays are damaged, the electric heater is directly controlled to stop working and fault repair is carried out.
Specifically, the control method further includes:
s106, if the temperature of the cavity does not meet the requirement that the temperature is lower than the preset temperature in two continuous preset periods, controlling the first relay to be continuously closed.
In this embodiment, if the cavity temperature is not satisfied and is all less than preset temperature in two consecutive preset periods, it is normal that first relay is said, and at this moment, control first relay and continue to close, alright control the electric heater and continue the heating process.
Specifically, the control method further includes:
and S107, when a second instruction is received, controlling the first relay to be disconnected according to the second instruction, and controlling the second relay to be closed, wherein the second instruction comprises a second heating instruction and a second heat preservation instruction.
In the embodiment, if the first relay and the second relay in the electric heater are normal, the first relay is closed to conduct the circuit so as to control the electric heater to heat; at the moment, if a new heating instruction is received, the first relay is controlled to be switched off, the second relay is switched on, and the circuit is switched on by the second relay so as to control the electric heater to heat.
The control method of the electric heater in the embodiment of the invention is applied to a circuit which adopts 2 relays connected in parallel to a heating load and is shown in figure 1, and the specific control process comprises the following steps:
(1) Receiving a first instruction, closing the default relay 1 at the moment, and controlling the port 1 to be connected with a heating load through NET 1;
(2) After the circuit is conducted, periodically detecting the temperature of the cavity of the electric heater according to a preset period;
(3) Judging whether the cavity temperature is lower than a preset temperature or not;
(4) If the cavity temperature is lower than the preset temperature in two continuous preset periods, it indicates that the relay 1 is damaged, at this time, the relay 1 is controlled to be switched off, the relay 2 is controlled to be switched on, namely, the circuit is switched on by switching the relay 2, so as to control the heating load to heat.
(5) If the cavity temperature does not meet the condition that the cavity temperature is lower than the preset temperature in two continuous preset periods, the relay 1 is normal, at the moment, the relay 1 is controlled to be continuously closed, and the relay 2 is switched off; at this time, if a new command is received again, the relay 1 is directly controlled to be opened, and the relay 2 is controlled to be closed.
In the embodiment, when all the relays are not damaged, namely normal, the relays are switched once when a new instruction is received, so that the service life of the relays can be prolonged; if the relay number is 2, then make a round trip to switch between 2 relays, if the relay number is more than 2, then cycle switching in turn according to the order, for example the relay number is 3, is first relay, second relay and third relay respectively, then the circulation in its cycle switching order in turn is: first relay → second relay → third relay → first relay → second relay → third relay … …
In the embodiment, if a damaged relay exists in the relays, the damaged relay can be detected when a heating instruction is received, and then the normal relay is directly closed without opening the damaged relay when the heating instruction is received again; for example, in the circuit shown in fig. 1, if it is detected that the relay 1 has been damaged, the relay 2 is directly closed when a heating instruction is received again. If the electric heater is connected with a heating load in parallel by 3 relays, the relays are respectively the first relays. When the first instruction is received, the first relay is found to be damaged through detection, the second relay and the third relay are normal, the first relay is controlled to be switched off at the moment, and the second relay is controlled to be switched on; at the moment, if a second instruction is received, the second relay is controlled to be switched off, the third relay is switched on, and the third relay is switched on to switch on the circuit so as to control the electric heater to heat; at the moment, if a third instruction is received, the third relay is controlled to be switched off, and the second relay is controlled to be switched on; i.e. the relay is switched once a new command is received.
Specifically, the detection process may include temperature increase abnormality detection and temperature decrease abnormality detection.
Referring to fig. 3, fig. 3 shows a flow of temperature increase abnormality detection, which specifically includes:
(1) After a heating starting instruction is sent to the electric heater, a heating abnormity detection program is started;
(2) Setting a detection period delta T and a preset temperature Tcheck with different durations according to the size of the cavity, wherein the preset temperature Tcheck is a temperature value obtained by inquiring a preset temperature array table once every period delta T, and T1 and T2 … Tn are cavity temperatures detected every period delta T;
(3) If the cavity temperature Tn at the corresponding time is less than the preset temperature value of the table lookup for two times continuously in the abnormal heating detection period, judging that the current relay is damaged, recording abnormal data, and starting another relay to perform relay heating.
Referring to fig. 4, fig. 3 shows a flow of cooling abnormality detection, which specifically includes:
(1) After the temperature-rise abnormity detection program is executed, starting the temperature-fall abnormity detection program;
(2) In the heat preservation stage, setting a detection period delta T and a preset temperature Tcheck2 with different durations according to the size of the cavity, wherein the Tcheck2 is a temperature value obtained by inquiring a preset temperature array table every period delta T, and T12 and T22 … Tn2 are the temperatures of the cavity detected every period delta T;
(3) And if the cavity temperature Tn2 at the corresponding time is less than the preset temperature value of the table lookup twice continuously in the heat preservation detection period, judging that the current relay is damaged, recording abnormal data, and starting another relay to perform relay heating.
Generally, the execution objects of the control heating logic are various loads, including a magnetron, an electric heating tube, a fan, and the like, and the heat preservation stage executes a heat preservation program with specific parameters, such as intermittently turning on the heating tube to continue heating or operating the fan for a period of time to accelerate cooling, according to the set temperature in the current mode and the heat preservation performance of the cavity of the electrical appliance, and the like. The detection period can be determined according to the size of the cavity of the electric appliance, the heat preservation performance, the size of the heating load and other factors.
Referring to fig. 5, fig. 5 shows a flow of detecting the whole electric heater, and the specific flow includes:
(1) Electrifying an electric heater product;
(2) Starting heating;
(3) Executing a temperature rise abnormality detection program shown in fig. 3, and judging whether there is an abnormal data record;
(4) If abnormal data records exist, the fact that a damaged relay exists in the relay is indicated, and at the moment, the relay without abnormality is closed;
(5) Further judging whether the abnormal data record is equal to 0;
(6) If yes, indicating that all relays are damaged, stopping heating and cooking at the moment, and reporting and repairing faults;
(7) If the abnormal temperature rise detection program shown in fig. 3 is executed, no abnormal data record exists, which indicates that all relays are normal, and at this time, different relays are selected to operate each time the heating load is restarted;
(8) After the temperature rise is finished, starting a temperature-lowering abnormity detection program shown in fig. 4, namely starting a heat preservation detection program;
(9) Whether abnormal data records exist is detected, if abnormal data records exist, it is indicated that a damaged relay exists in the relay, and at the moment, the relay without abnormality is closed;
(10) Further judging whether the abnormal data record is equal to 0;
(11) If yes, indicating that all relays are damaged, stopping heating and cooking at the moment, and reporting and repairing faults;
(12) If the cooling abnormality detection program shown in fig. 4 is executed, there is no abnormal data record, which indicates that all relays are normal, and at this time, different relays are selected to operate each time the heating load is restarted;
(13) And continuing to cook until the cooking time is reached and then finishing cooking.
An embodiment of the present invention further provides a control system for an electric heater, the electric heater including a heating load and a plurality of relays connected in parallel to the heating load, including:
the system comprises an acquisition module, a processing module and a control module, wherein the acquisition module is used for acquiring a first instruction, and the first instruction comprises a first heating instruction and a first heat preservation Wen Zhiling;
the detection module is used for periodically detecting the cavity temperature of the electric heater according to a preset period;
the judging module is used for judging whether the cavity temperature is lower than a preset temperature or not;
the control module is used for controlling a first relay to be switched off according to the first instruction and controlling a second relay to be switched on if the temperature of the cavity is less than a preset temperature in two continuous preset periods, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays other than the first relay.
According to the control system of the electric heater, after the acquisition module acquires the first instruction, the detection module is used for periodically detecting the cavity temperature of the electric heater according to a preset period, the judgment module is used for judging whether the cavity temperature is lower than the preset temperature or not, if the cavity temperature is lower than the preset temperature in two continuous preset periods, the first relay is damaged, at the moment, the first relay is controlled to be switched off according to the first instruction, the second relay is controlled to be switched on, heating interruption caused by damage of the relay in the heating process can be avoided, the control system of the electric heater is high in reliability, and the user satisfaction degree can be improved.
Referring to fig. 6, an embodiment of the present invention further provides a control apparatus 200 for an electric heater, including:
at least one processor 210;
at least one memory 220 for storing at least one program;
when the at least one program is executed by the at least one processor 210, the at least one processor 210 is caused to implement the control method as shown in fig. 2.
The memory 220, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs and non-transitory computer-executable programs. The memory 220 may include high speed random access memory and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 220 may optionally include remote memory located remotely from processor 210, which may be connected to processor 210 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
It will be appreciated that the device configuration shown in FIG. 6 does not constitute a limitation of the control device 200, and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
In the control device 200 shown in fig. 6, the processor 210 may retrieve the program stored in the memory 220 and execute, but is not limited to, the steps of the embodiment shown in fig. 2.
The control device 200 can judge whether the relay closed in the current state is damaged by detecting whether the temperature of the cavity of the electric heater is lower than the preset temperature in two continuous preset periods or not in the heating process through the processor 210 executing the program on the memory 220, and if the relay closed in the current state is damaged, the relay closed in the current state is controlled to be opened according to the first instruction, and relays except the first relay in the plurality of relays are controlled to be closed, so that the heating interruption caused by the damage of the relay in the heating process can be avoided.
The above-described embodiments of the data processing apparatus 200 are merely illustrative, and the units illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purposes of the embodiments.
The embodiment of the invention also provides household electrical appliance which comprises a control system of the electric heater or a control device shown in fig. 6.
When the household appliance comprises the control system, the functions which can be realized by the household appliance are the same as those of the embodiment of the control method shown in fig. 2, and the beneficial effects which are achieved by the household appliance are the same as those of the embodiment of the control method shown in fig. 2; when the home appliance according to the embodiment of the present invention includes the control device 200 according to the embodiment shown in fig. 6, the home appliance in the embodiment has the hardware structure of the control device 200, and the processor 210 in the control device 200 can call the program stored in the memory 220 to implement the control method shown in fig. 2; the household appliance comprises at least one of a microwave oven, an electric cooker, an electric mattress, an electric iron and an electric water heater; for a specific implementation of the home appliance of this embodiment, reference may be made to the foregoing embodiments, which are not described herein again.
An embodiment of the present invention also provides a computer-readable storage medium, which stores a program executable by a processor, where the program executable by the processor is used to implement the control method shown in fig. 2 when being executed by the processor.
The embodiment of the invention also discloses a computer program product or a computer program, which comprises computer instructions, and the computer instructions are stored in a computer readable storage medium. The computer instructions may be read by a processor of the computer device from a computer-readable storage medium, and the computer instructions are executed by the processor to cause the computer device to perform the control method shown in fig. 2.
It will be understood that all or some of the steps, systems of methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as that term is known to one of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A control method of an electric heater including a heating load and a plurality of relays connected in parallel to the heating load, the control method comprising:
acquiring a first instruction, wherein the first instruction comprises any one of a first heating instruction and a first heat preservation instruction;
periodically detecting the temperature of the cavity of the electric heater according to a preset period;
judging whether the cavity temperature is lower than a preset temperature or not;
if the temperature of the cavity is lower than the preset temperature in two continuous preset periods, controlling a first relay to be switched off according to the first instruction, and controlling a second relay to be switched on, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays other than the first relay.
2. The method as claimed in claim 1, wherein after the step of controlling the first relay to be opened and the second relay to be closed according to the first command if the temperature of the chamber is less than the preset temperature in two consecutive preset periods, the method further comprises:
and acquiring and recording abnormal data, wherein the abnormal data is used for displaying the number of the damaged relays.
3. The method of claim 1, further comprising:
and when all the relays are damaged, controlling the electric heater to stop working.
4. The method of claim 1, further comprising:
and if the temperature of the cavity does not meet the preset temperature in two continuous preset periods, controlling the first relay to be continuously closed.
5. The method of claim 4, further comprising:
and when a second instruction is received, controlling the first relay to be switched off according to the second instruction, and controlling the second relay to be switched on, wherein the second instruction comprises any one of a second heating instruction and a second heat preservation instruction.
6. A control system for an electric heater, the electric heater including a heating load and a plurality of relays connected in parallel to the heating load, the control system comprising:
the system comprises an acquisition module, a processing module and a control module, wherein the acquisition module is used for acquiring a first instruction, and the first instruction comprises a first heating instruction and a first heat preservation Wen Zhiling;
the detection module is used for periodically detecting the cavity temperature of the electric heater according to a preset period;
the judging module is used for judging whether the cavity temperature is lower than a preset temperature or not;
the control module is used for controlling a first relay to be switched off according to the first instruction and controlling a second relay to be switched on if the temperature of the cavity is less than a preset temperature in two continuous preset periods, wherein the first relay is the relay which is switched on in the current state; the second relay is a relay of the plurality of relays other than the first relay.
7. The control system of claim 6, wherein the control module comprises:
and the acquisition and recording unit is used for acquiring and recording abnormal data, and the abnormal data is used for displaying the number of the damaged relays.
8. A control device for an electric heater, comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement the control method of any one of claims 1-5.
9. An electric household appliance comprising a control system according to any one of claims 6 or 7 or a control device according to claim 8.
10. Computer-readable storage medium, characterized in that a program executable by a processor is stored thereon, which program, when being executed by the processor, is adapted to carry out the control method according to any one of claims 1 to 5.
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| CN202011641190.7A CN112804772B (en) | 2020-12-31 | 2020-12-31 | Control method, system and device of electric heater and storage medium |
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| CN202011641190.7A CN112804772B (en) | 2020-12-31 | 2020-12-31 | Control method, system and device of electric heater and storage medium |
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| CN115220489B (en) * | 2022-07-12 | 2024-04-12 | 江苏时代新能源科技有限公司 | Baking system and control method and device thereof |
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| JP2002215245A (en) * | 2001-01-19 | 2002-07-31 | Mitsuru Tsumanuma | Temperature controller for electric heater |
| CN104507182B (en) * | 2014-12-24 | 2016-05-18 | 湖南中和制药有限公司 | Plastic-aluminum heat sealing machine heating system and with the plastic-aluminum heat sealing machine of this heating system |
| CN106951012B (en) * | 2017-03-09 | 2019-04-02 | 九阳股份有限公司 | A kind of temprature control method of oven |
| CN109741991A (en) * | 2018-12-29 | 2019-05-10 | 深圳和而泰智能控制股份有限公司 | A kind of method, apparatus and electronic equipment controlling relay |
| CN110638335A (en) * | 2019-09-02 | 2020-01-03 | 珠海格力电器股份有限公司 | Cooking equipment safety control method and device, storage medium and cooking equipment |
| CN110949183B (en) * | 2019-12-03 | 2021-06-08 | 中国第一汽车股份有限公司 | Direct current charging heating control method, device, circuit, vehicle and storage medium |
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