CN113126168A - Detection method, device, equipment and storage medium - Google Patents
Detection method, device, equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a detection method, a detection device, equipment and a storage medium, wherein the method is applied to an induction heating device; the induction heating device comprises a plurality of induction coils; the method comprises the following steps: confirming that objects to be heated are not placed in the supporting areas corresponding to the induction coils, and respectively inputting input signals to the induction coils in a time division mode to obtain first output signals corresponding to the induction coils; after a first preset time interval, obtaining a second output signal corresponding to each induction coil; and determining a first change value of the first output signal and the second output signal, and determining that the object to be heated is placed on the supporting area corresponding to at least part of the plurality of induction coils based on the first change value.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a detection method, a detection device, detection equipment and a storage medium.
Background
At present, the induction heating device with multiple induction coils related to the industry basically selects the coils to start and cancel heating actions in a manual operation mode, but when the number of the induction coils is too large, the accuracy of the manual operation mode is poor, and meanwhile, the step from the selected position to the heating cannot be completed quickly. Therefore, there is an urgent need to solve the problems of how to determine that an object to be heated has been placed on a corresponding coil and how to determine that the object to be heated has been removed from the induction coil after the induction coil starts to heat, and there is no effective solution at present.
Disclosure of Invention
In view of this, embodiments of the present invention are intended to provide a detection method, apparatus, device, and storage medium.
The technical embodiment of the invention is realized as follows:
the embodiment of the invention provides a detection method, which is applied to an induction heating device; the induction heating device comprises a plurality of induction coils; the method comprises the following steps:
confirming that objects to be heated are not placed in the supporting areas corresponding to the induction coils, and respectively inputting input signals to the induction coils in a time division mode to obtain first output signals corresponding to the induction coils;
after a first preset time interval, obtaining a second output signal corresponding to each induction coil;
and determining a first change value of the first output signal and the second output signal, and determining that the object to be heated is placed on the supporting area corresponding to at least part of the plurality of induction coils based on the first change value.
In the above aspect, the determining, based on the first variation value, that the object to be heated is placed on the support region corresponding to at least some of the plurality of induction coils includes:
judging whether the first change value is larger than a first preset threshold value or not;
and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
In the above scheme, two adjacent subintervals in the plurality of subintervals partially overlap; or, two adjacent subintervals in the plurality of subintervals are continuous and do not overlap.
In the above aspect, after determining that the object to be heated is placed on the supporting region corresponding to the first induction coil corresponding to the first variation value, the method further includes:
after a second preset time interval, acquiring a second output signal corresponding to the first induction coil again;
judging whether a first change value between the second output signal and the first output signal is larger than a first preset threshold value again;
and determining that the object to be heated placed in the supporting region corresponding to the first induction coil is in a removed state.
In the above scheme, the first input signal is a pulse signal.
In the above aspect, after determining that the object to be heated is placed on the support region corresponding to the first induction coil corresponding to the first variation value, the method further includes:
obtaining a heating instruction; controlling to input a heating signal to the first induction coil based on the heating instruction.
In the above aspect, the method further includes:
obtaining a third output signal corresponding to the first induction coil;
after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil;
and determining a second variation value of the third output signal and the fourth output signal, and determining the state of the object to be heated on the support area corresponding to the first induction coil based on the second variation value.
In the above aspect, the determining the state of the object to be heated on the support region corresponding to the first induction coil based on the second variation value includes:
judging whether the second variation value is larger than a second preset threshold value or not;
determining that the second change value is larger than a second preset threshold value, and determining that the object to be heated placed in the support region corresponding to the first induction coil is in a removed state;
and determining that the second variation value is less than or equal to a second preset threshold value, and determining that the object to be heated placed on the support area corresponding to the heated induction coil is in a placing state.
In the above aspect, after determining that the object to be heated placed on the support region corresponding to the first induction coil is in a removed state, the method further includes:
after a fourth preset time interval, a fourth output signal corresponding to the first induction coil is obtained again;
judging whether a second change value between the fourth output signal and the third output signal is larger than a second preset threshold value again;
and determining that the second change value is less than or equal to the second preset threshold value, and determining that the object to be heated is placed in the supporting area corresponding to the first induction coil again.
An embodiment of the present invention provides a detection apparatus, including: a first obtaining unit and a determining unit, wherein:
the first obtaining unit is used for confirming that an object to be heated is not placed in the supporting areas corresponding to the plurality of induction coils, respectively inputting input signals to the plurality of induction coils in a time division mode, and obtaining a first output signal corresponding to each induction coil; after a first preset time interval, obtaining a second output signal corresponding to each induction coil;
the determining unit is used for determining a first change value of the first output signal and the second output signal based on the first output signal and the second output signal obtained by the first obtaining unit, and determining that an object to be heated is placed on a supporting area corresponding to at least part of the plurality of induction coils based on the first change value.
In the foregoing scheme, the determining unit is further configured to determine whether the first variation value is greater than a first preset threshold value; and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
In the above scheme, the first obtaining unit is further configured to obtain a second output signal corresponding to the first induction coil again after a second preset time interval;
the determining unit is further configured to re-determine whether a first variation value between the second output signal and the first output signal is greater than the first preset threshold; and determining that the object to be heated placed in the supporting region corresponding to the first induction coil is in a removed state.
In the above scheme, the first input signal is a pulse signal.
In the above solution, the apparatus further comprises: a second obtaining unit and a control unit, wherein:
the second obtaining unit is used for obtaining a heating instruction;
the control unit is used for controlling the heating signal to be input to the first induction coil based on the heating instruction obtained by the second obtaining unit.
In the above scheme, the first obtaining unit is further configured to obtain a third output signal corresponding to the first induction coil; after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil;
the determining unit is further configured to determine a second variation value of the third output signal and the fourth output signal based on the third output signal and the fourth output signal obtained by the first obtaining unit, and determine the state of the object to be heated on the support region corresponding to the first induction coil based on the second variation value.
In the above scheme, the determining unit is further configured to determine whether the second variation value is greater than a second preset threshold value; determining that the second change value is larger than a second preset threshold value, and determining that the object to be heated placed in the support region corresponding to the first induction coil is in a removed state; and determining that the second variation value is less than or equal to a second preset threshold value, and determining that the object to be heated placed on the support area corresponding to the heated induction coil is in a placing state.
In the above scheme, the first obtaining unit is further configured to obtain a fourth output signal corresponding to the first induction coil again after a fourth preset time interval;
the determining unit is further configured to re-determine whether a second variation value between the fourth output signal and the third output signal is greater than the second preset threshold; and determining that the second change value is less than or equal to the second preset threshold value, and determining that the object to be heated is placed in the supporting area corresponding to the first induction coil again.
An embodiment of the present invention provides a detection apparatus, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements any step of the above method when executing the program.
Embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements any of the steps of the above-mentioned method.
The detection method, the detection device, the detection equipment and the storage medium are provided by the embodiment of the invention, wherein the method is applied to an induction heating device; the induction heating device comprises a plurality of induction coils; the method comprises the following steps: confirming that objects to be heated are not placed in the supporting areas corresponding to the induction coils, and respectively inputting input signals to the induction coils in a time division mode to obtain first output signals corresponding to the induction coils; after a first preset time interval, obtaining a second output signal corresponding to each induction coil; and determining a first change value of the first output signal and the second output signal, and determining that the object to be heated is placed on the supporting area corresponding to at least part of the plurality of induction coils based on the first change value. By adopting the technical scheme of the embodiment of the invention, the supporting areas corresponding to at least part of the induction coils in the plurality of induction coils are determined to place the objects to be heated through the obtained first change values, at least part of the induction coils corresponding to the objects to be heated are not required to be selected from the plurality of induction coils in a manual operation mode, and then the heating action of at least part of the induction coils is started or cancelled, so that the precision of the induction heating device is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a flow chart of a detection method according to an embodiment of the present invention;
FIG. 2 is a schematic view of an induction heating apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a principle of dividing an input signal in a time division manner according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an application scenario of the detection method according to the embodiment of the present invention;
FIG. 5 is a schematic flow chart of another implementation of the detection method according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of another application scenario of the detection method according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of another application scenario of the detection method according to the embodiment of the present invention;
FIG. 8 is a schematic diagram of the structure of a detecting device according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a hardware entity structure of a detection device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following describes specific technical solutions of the present invention in further detail with reference to the accompanying drawings in the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The embodiment provides a detection method, which is applied to a detection device, and the functions implemented by the method can be implemented by calling a program code by a processor in the detection device, where of course, the program code can be stored in a computer storage medium, and thus, the computing device at least includes a processor and a storage medium.
FIG. 1 is a schematic flow chart of a detection method according to an embodiment of the present invention, as shown in FIG. 1, the method is applied to an induction heating apparatus; the induction heating device comprises a plurality of induction coils; the method comprises the following steps:
step S101: and confirming that the objects to be heated are not placed in the supporting areas corresponding to the plurality of induction coils, and respectively inputting input signals to the plurality of induction coils in a time division manner to obtain first output signals corresponding to each induction coil.
The induction heating device is any device that can perform induction heating, and is not limited herein. As an example, the induction heating device may be an induction cooker. The induction heating device comprises a plurality of induction coils; wherein each induction coil has a corresponding support area which can be used for placing an object to be heated.
For convenience of understanding, an induction heating apparatus is illustrated here, and fig. 2 is a schematic view of an induction heating apparatus according to an embodiment of the present invention, and as shown in fig. 2, 11 indicates an induction heating apparatus, and 12 indicates a plurality of induction coils in the induction heating apparatus.
The input signal may be a power signal, and as an example, the power signal may be a pulse signal, and specifically may be a voltage pulse signal, which is not limited herein. The input signal may provide a power supply signal via a power supply, the power supply may be an excitation source, the excitation source may be a high-frequency pulse with a certain frequency and duty ratio, and the specific condition of the certain frequency and duty ratio may be determined according to actual conditions.
The time division mode is to input an input signal to the plurality of induction coils respectively according to a preset time length, and the preset time length can be determined according to actual conditions. The input signals are respectively input to the plurality of induction coils in a time division manner, which is to be understood as that the input signals are continuously and respectively input to the plurality of induction coils in a time division manner.
For convenience of understanding, fig. 3 is a schematic diagram illustrating that the input signal in the detection method according to the embodiment of the present invention is divided in a time division manner, as shown in fig. 3, the input signal may be a pulse signal, 20 indicates an input signal, 20a and 20b … … 20n indicate a case where the input signal is respectively input to the plurality of induction coils according to a preset time length t, 20a may represent a signal input to a first induction coil of the plurality of induction coils, 20n may represent a signal input to a last induction coil of the plurality of induction coils, and how many signals the input signal needs to be divided according to the time length t may be defined according to the number of the induction coils, which is not limited herein.
The first output signal may be any electrical signal, and is not limited herein. As an example, the first output signal may be a voltage signal.
In this embodiment, it is determined that the object to be heated is not placed in the support regions corresponding to the plurality of induction coils, and the input signals are respectively input to the plurality of induction coils in a time division manner, and obtaining the first output signal corresponding to each induction coil may be understood as obtaining the first output signal corresponding to each induction coil by respectively inputting the input signals to the plurality of induction coils in a time division manner without placing any object to be heated in the support regions corresponding to the plurality of induction coils in the induction heating apparatus.
Step S102: and after a first preset time interval, obtaining a second output signal corresponding to each induction coil.
It should be noted that the first preset time period may be determined according to an actual situation, and is not limited herein. In practical applications, if an object to be heated needs to be placed on the induction heating device in a certain time period, the first preset time period setting period may be shorter within the certain time period, for example, 1min, 2min, etc.; if it is not necessary to place an object to be heated on the induction heating apparatus for a certain period of time, the first preset period of time may be set longer for the certain period of time, for example, 1h, 2h, etc.
In this embodiment, the second output signal may be any electrical signal, but the type of the second output signal needs to be the same as the type of the first output signal. As an example, when the first output signal is a voltage signal, the second output signal is also a voltage signal.
Step S103: and determining a first change value of the first output signal and the second output signal, and determining that the object to be heated is placed on the supporting area corresponding to at least part of the plurality of induction coils based on the first change value.
The first variation value is any value that can represent a variation in the first output signal and the second output signal, and is not limited herein. As an example, when the first output signal and the second output signal are both voltage signals, the first variation value may be a variation value of a voltage, and the variation value may be a difference value of the voltage.
Determining that the object to be heated is placed on the support region corresponding to at least part of the plurality of induction coils based on the first variation value may be to determine whether the first variation value is greater than a preset threshold, and in a case where the first variation value is greater than the preset threshold, determining that the object to be heated is placed on the support region corresponding to the first induction coil corresponding to the first variation value; and when the first change value is smaller than or equal to the preset threshold value, determining that the object to be heated is not placed in the supporting area corresponding to the first induction coil corresponding to the first change value. The preset threshold may be determined according to actual conditions, and is not limited herein, and the preset threshold may include a first preset threshold, where the first preset threshold is related to a metal material of an object to be heated, and the first preset thresholds corresponding to different metal materials are different.
In this embodiment, after every first preset time interval, the second output signal corresponding to each induction coil is respectively compared with the first output signal serving as the reference signal to determine the induction coil corresponding to the signal in which the first output signal and the second output signal change, so as to determine whether the object to be heated is placed in the corresponding support region on the induction coil corresponding to the change in the output signal. A specific procedure can be illustrated, and assuming that the first output signal and the second output signal are both voltage signals, since the detection circuit in the induction heating apparatus detects the first output signal in the circuit when the object to be heated is not placed in the support region corresponding to the plurality of induction coils, and the detection circuit in the induction heating apparatus detects that the resistance in the circuit increases when the object to be heated is placed in the support region corresponding to the plurality of induction coils, the voltage detection unit in the detection circuit detects that the voltage in the circuit changes, that is, the second output signal changes; and further determining a first variation value of the first output signal and the second output signal, and determining whether an object to be heated is placed on a support area corresponding to at least some of the plurality of induction coils based on the first variation value.
For convenience of understanding, fig. 4 is a schematic view of an application scenario of the detection method according to the embodiment of the present invention; as shown in fig. 4, 21a indicates a first output signal, 21n indicates a second output signal, and 21(a-n) indicates first variation values of the first output signal and the second output signal, and assuming that the first output signal and the second output signal are both voltage signals in fig. 4, the first variation values of the first output signal and the second output signal are voltage variation values, i.e., Δ U; v is a preset threshold value, and when the delta U is larger than V, the supporting area corresponding to at least part of the induction coils in the plurality of induction coils is determined to place an object to be heated on the basis of the first change value; when Δ U is equal to or less than V, it is determined that the object to be heated is not placed in the support region corresponding to at least some of the plurality of induction coils based on the first variation value.
In an optional embodiment of the present invention, the determining, based on the first variation value, that the object to be heated is placed on the support region corresponding to at least some of the plurality of induction coils includes:
judging whether the first change value is larger than a first preset threshold value or not;
and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
In this embodiment, the first preset threshold is determined according to actual conditions, the first preset threshold is related to the metal material of the object to be heated, and the first preset thresholds corresponding to different metal materials are different.
The first induction coil is an induction coil which compares a second output signal corresponding to each induction coil with a first output signal serving as a reference signal after every interval of a first preset time, wherein the signals in the first output signal and the second output signal are changed and correspond to each other.
In an optional embodiment of the present invention, after determining that the object to be heated is placed on the supporting region corresponding to the first induction coil corresponding to the first variation value, the method further includes:
after a second preset time interval, acquiring a second output signal corresponding to the first induction coil again;
judging whether a first change value between the second output signal and the first output signal is larger than a first preset threshold value again;
and determining that the object to be heated placed in the supporting region corresponding to the first induction coil is in a removed state.
In this embodiment, it can be detected whether or not the object to be heated has been removed when the first induction coil in the induction heating apparatus has not been heated after the object to be heated is placed on the support region corresponding to the first induction coil.
It should be noted that the second preset time period may be determined according to an actual situation, and is not limited herein. In practical applications, the second preset time period is generally set to be shorter, for example, 1min, 2min, and so on.
After a second preset time interval, detecting a second output signal corresponding to the first induction coil again; and whether a first change value between a second output signal corresponding to the first induction coil and a first output signal corresponding to the first induction coil is larger than a first preset threshold value or not is judged again, and the object to be heated placed in the supporting area corresponding to the first induction coil is determined to be in a removed state under the condition that the first change value is smaller than or equal to the first preset threshold value.
In an alternative embodiment of the present invention, the first input signal is a pulse signal.
In this embodiment, the pulse signal may be any pulse signal, and is not limited herein. As an example, the pulse signal may be a voltage pulse signal.
In an optional embodiment of the present invention, after determining that the object to be heated is placed on the support region corresponding to the first induction coil corresponding to the first variation value, the method further comprises:
obtaining a heating instruction; controlling to input a heating signal to the first induction coil based on the heating instruction.
In this embodiment, the heating instruction may be a heating instruction input by a user, or may be a heating instruction input by a related device in the induction heating apparatus, which is not limited herein.
The heating signal may be a high-frequency current signal generated by inputting an input signal to the inverter circuit, and then the high-frequency current signal is input to the first induction coil; wherein the input signal may be a power signal, which may be an alternating voltage signal of 220v as an example; the switching elements in the inverter circuit are turned on and off to convert an input signal into a high frequency current signal.
According to the detection method provided by the embodiment of the invention, whether an object to be heated is placed in the support area corresponding to at least part of the induction coils in the plurality of induction coils is determined through the obtained first change value, at least part of the induction coils corresponding to the object to be heated is not required to be selected from the plurality of induction coils in a manual operation mode, and then the heating action of at least part of the induction coils is started or cancelled, so that the precision of the induction heating device is greatly improved.
Fig. 5 is a schematic flow chart of another implementation of the detection method according to the embodiment of the present invention, as shown in fig. 5, the method includes:
step S201, confirming that no object to be heated is placed in the supporting areas corresponding to the plurality of induction coils, and respectively inputting input signals to the plurality of induction coils in a time division manner to obtain first output signals corresponding to each induction coil.
Step S201 in this embodiment may refer to the description in step S101 in the foregoing embodiment, and is not described herein again.
Step S202, after a first preset time interval, obtaining a second output signal corresponding to each induction coil.
Step S202 in this embodiment may refer to the description in step S102 in the foregoing embodiment, and is not described herein again.
Step S203, determining a first variation value of the first output signal and the second output signal, and determining whether the first variation value is greater than a first preset threshold; and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
The first variation value is any value that can represent a variation in the first output signal and the second output signal, and is not limited herein. As an example, when the first output signal and the second output signal are both voltage signals, the first variation value may be a variation value of a voltage, and the variation value may be a difference value of the voltage.
In this embodiment, the first preset threshold is determined according to actual conditions, the first preset threshold is related to the metal material of the object to be heated, and the first preset thresholds corresponding to different metal materials are different.
Step S204, a heating instruction is obtained; controlling to input a heating signal to the first induction coil based on the heating instruction.
In this embodiment, the heating instruction may be a heating instruction input by a user, or may be a heating instruction input by a related device in the induction heating apparatus, which is not limited herein.
The heating signal may be a high-frequency current signal generated by inputting an input signal to the inverter circuit, and then the high-frequency current signal is input to the first induction coil; wherein the input signal may be a power signal, which may be an alternating voltage signal of 220v as an example; the switching elements in the inverter circuit are turned on and off to convert an input signal into a high frequency current signal.
For convenience of understanding, fig. 6 is a schematic view of another application scenario of the detection method according to the embodiment of the present invention; as shown in fig. 6, 41 indicates a first switching device, 42 indicates a second switching device, when it is required to detect whether an object to be heated is placed in a support area corresponding to an induction coil in an induction heating apparatus, 1 and 3 of the first switching device are connected, 1 and 3 of the second switching device are connected to operate an unheated detection circuit, and in a case where an object to be heated is not placed in a support area corresponding to the plurality of induction coils, input signals are respectively input to the plurality of induction coils in a time division manner to obtain a first output signal corresponding to each induction coil; after a first preset time interval, obtaining a second output signal corresponding to each induction coil; further determining a first change value of the first output signal and the second output signal, and judging whether the first change value is larger than a first preset threshold value; when the first variation value is larger than the first preset threshold value, when the object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first variation value, if the controller in the induction heating device obtains a heating instruction, the controller controls connection of 1 and 2 in the first switch device and connection of 1 and 2 in the second switch device based on the heating instruction, and a heating signal is input to the first induction coil, so that the heating detection circuit can detect a relevant output signal corresponding to the first induction coil.
Step S205, obtaining a third output signal corresponding to the first induction coil.
In this embodiment, after an object to be heated is placed in a support region corresponding to a first induction coil in an induction heating apparatus, a heating instruction needs to be obtained; and controlling to input a heating signal to the first induction coil based on the heating instruction so as to obtain a third output signal corresponding to the first induction coil as a reference signal.
The third output signal may be any electrical signal, and is not limited herein. As an example, the third output signal may be a current signal.
Step S206, after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil.
It should be noted that the third preset time period may be determined according to an actual situation, and is not limited herein. As an example, the third preset time period may be 1min, 5min, 10min, 30min, and so on.
In this embodiment, the fourth output signal may be any electrical signal, but the type of the fourth output signal needs to be the same as the type of the first output signal. As an example, when the third output signal is a current signal, the fourth output signal is also a current signal.
Step S207, determining a second variation value of the third output signal and the fourth output signal, and determining a state of the object to be heated on the support area corresponding to the first induction coil based on the second variation value.
The second variation value is any value that can represent a variation in the third output signal and the fourth output signal, and is not limited herein. As an example, when the third output signal and the fourth output signal are both current signals, the second variation value may be a variation value of a current, and the variation value may be a difference value of the current.
Determining the state of the object to be heated on the support region corresponding to the first induction coil based on the second variation value may be determining whether the second variation value is greater than a preset threshold value, and determining that the object to be heated placed on the support region corresponding to the first induction coil is in a removed state in a case where the second variation value is greater than the second preset threshold value; and determining that the object to be heated placed on the support region corresponding to the heated induction coil is in a placed state when the second variation value is equal to or less than a second preset threshold value. The preset threshold may be determined according to actual conditions, and is not limited herein, and the preset threshold may include a second preset threshold, where the second preset threshold is related to a metal material of an object to be heated, and the second preset thresholds corresponding to different metal materials are different.
In this embodiment, a third output signal is used as a reference signal, and after a third preset time interval, a fourth output signal is compared with the third output signal to determine a second variation value of the third output signal and the fourth output signal, and the state of the object to be heated on the support region corresponding to the first induction coil is determined based on the second variation value. For convenience of understanding, assuming that the fourth output signal and the third output signal are both current signals, since the heating detection circuit detects the resistance corresponding to the object to be heated in the circuit in the case where the object to be heated is placed on the support region corresponding to the first induction coil, the heating detection circuit detects that the resistance in the circuit is decreased when the object to be heated which has been heated is removed, and the current detection unit in the heating detection circuit detects that the current in the circuit is changed (increased), that is, the fourth output signal is changed; and further determining a second variation value of the third output signal and the fourth output signal, and determining a state of the object to be heated on the support region corresponding to the first induction coil based on the second variation value.
For convenience of understanding, fig. 7 is a schematic view of another application scenario of the detection method according to the embodiment of the present invention; as shown in fig. 7, 32a indicates a third output signal, 32n indicates a fourth output signal, and 32(a-n) indicates second variation values of the third output signal and the fourth output signal, which are current variation values, i.e., Δ I, when it is assumed in fig. 7 that the third output signal and the fourth output signal are both current signals; when the delta I is larger than the I, determining that the state of the object to be heated on the supporting area corresponding to the first induction coil is that the object to be heated placed on the supporting area corresponding to the first induction coil is in a removed state; when Δ I is equal to or less than I, it is determined based on the second variation value that the state of the object to be heated on the support region corresponding to the first induction coil is such that the object to be heated placed on the support region corresponding to the heated induction coil is in a placed state.
In an optional embodiment of the present invention, the determining the state of the object to be heated on the support area corresponding to the first induction coil based on the second variation value includes:
judging whether the second variation value is larger than a second preset threshold value or not;
determining that the second change value is larger than a second preset threshold value, and determining that the object to be heated placed in the support region corresponding to the first induction coil is in a removed state;
and determining that the second variation value is less than or equal to a second preset threshold value, and determining that the object to be heated placed on the support area corresponding to the heated induction coil is in a placing state.
In this embodiment, when the second preset threshold is determined according to actual conditions, the second preset threshold is related to the metal material of the object to be heated, and the second preset thresholds corresponding to different metal materials are different. As an example, assuming that the second preset threshold may be 5A and the second variation value may be 10A, since 10A is greater than 5A, it may be determined that the object to be heated placed on the support region corresponding to the first induction coil is in a removed state.
In an optional embodiment of the present invention, after determining that the object to be heated placed on the support region corresponding to the first induction coil is in a removed state, the method further comprises:
after a fourth preset time interval, a fourth output signal corresponding to the first induction coil is obtained again;
judging whether a second change value between the fourth output signal and the third output signal is larger than a second preset threshold value again;
and determining that the second change value is less than or equal to the second preset threshold value, and determining that the object to be heated is placed in the supporting area corresponding to the first induction coil again.
In this embodiment, it can be detected whether or not there is a supporting region corresponding to the first induction coil in the induction heating apparatus on which the object to be heated is newly placed after the object to be heated placed on the supporting region corresponding to the first induction coil is in the removed state.
As an example, assuming that the second preset threshold may be 5A and the second variation value may be 4A, since 4A is less than 5A, it may be determined that the object to be heated is relocated on the support region corresponding to the first induction coil.
According to the detection method provided by the embodiment of the invention, after the supporting area corresponding to the first induction coil corresponding to the first change value is determined to place the object to be heated, the third output signal corresponding to the first induction coil is obtained; after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil; and determining a second variation value of the third output signal and the fourth output signal, and determining a state of the object to be heated on the support area corresponding to the first induction coil based on the second variation value, so that heating can be stopped at any time when the object to be heated placed on the support area corresponding to the first induction coil is in a removed state.
Fig. 8 is a schematic view of a structure of a detection apparatus according to an embodiment of the present invention, and as shown in fig. 8, the apparatus 300 includes: a first obtaining unit 301 and a determining unit 302, wherein:
the first obtaining unit 301 is configured to confirm that no object to be heated is placed in the support regions corresponding to the multiple induction coils, and input signals to the multiple induction coils in a time division manner, so as to obtain a first output signal corresponding to each induction coil; and after a first preset time interval, obtaining a second output signal corresponding to each induction coil.
The determining unit 302 is configured to determine a first variation value of the first output signal and the second output signal based on the first output signal and the second output signal obtained by the first obtaining unit, and determine that an object to be heated is placed on a supporting region corresponding to at least some of the plurality of induction coils based on the first variation value.
In other embodiments, the determining unit 302 is further configured to determine whether the first variation value is greater than a first preset threshold; and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
In other embodiments, the first obtaining unit 301 is further configured to obtain a second output signal corresponding to the first induction coil again after a second preset time interval.
The determining unit 302 is further configured to determine whether a first variation value between the second output signal and the first output signal is greater than the first preset threshold again; and determining that the object to be heated placed in the supporting region corresponding to the first induction coil is in a removed state.
In other embodiments, the first input signal is a pulse signal.
In other embodiments, the apparatus 300 further comprises: a second obtaining unit and a control unit, wherein:
the second obtaining unit is used for obtaining a heating instruction;
the control unit is used for controlling the heating signal to be input to the first induction coil based on the heating instruction obtained by the second obtaining unit.
In other embodiments, the first obtaining unit 301 is further configured to obtain a third output signal corresponding to the first induction coil; and after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil.
The determining unit 302 is further configured to determine a second variation value of the third output signal and the fourth output signal based on the third output signal obtained by the first obtaining unit and the fourth output signal obtained by the second obtaining unit, and determine the state of the object to be heated on the supporting region corresponding to the first induction coil based on the second variation value.
In other embodiments, the determining unit 302 is further configured to determine whether the second variation value is greater than a second preset threshold; determining that the second change value is larger than a second preset threshold value, and determining that the object to be heated placed in the support region corresponding to the first induction coil is in a removed state; and determining that the second variation value is less than or equal to a second preset threshold value, and determining that the object to be heated placed on the support area corresponding to the heated induction coil is in a placing state.
In other embodiments, the first obtaining unit 301 is further configured to obtain a fourth output signal corresponding to the first induction coil again after a fourth preset time interval;
the determining unit 302 is further configured to determine whether a second variation value between the fourth output signal and the third output signal is greater than the second preset threshold again; and determining that the second change value is less than or equal to the second preset threshold value, and determining that the object to be heated is placed in the supporting area corresponding to the first induction coil again.
The above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention for understanding.
It should be noted that, in the embodiment of the present invention, if the detection method is implemented in the form of a software functional module and sold or used as a standalone product, the detection method may also be stored in a computer readable storage medium. With this understanding, technical embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a detection device (which may be a personal computer, a server, or a network device) to perform all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Correspondingly, an embodiment of the present invention provides a detection apparatus, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor executes the computer program to implement the steps in the detection method provided in the foregoing embodiment.
Correspondingly, the embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps in the detection method provided by the above-mentioned embodiment.
Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention.
It should be noted that fig. 9 is a schematic diagram of a hardware entity structure of a detection apparatus in an embodiment of the present invention, and as shown in fig. 9, the hardware entity of the detection apparatus 400 includes: a processor 401 and a memory 403, optionally, the detection device 400 may further comprise a communication interface 402.
It will be appreciated that the memory 403 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 403 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
The method disclosed in the above embodiments of the present invention may be applied to the processor 401, or implemented by the processor 401. The processor 401 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 401. The Processor 401 described above may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 401 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in memory 403, and processor 401 reads the information in memory 403 and performs the steps of the foregoing method in conjunction with its hardware.
In an exemplary embodiment, the detection Device may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field-Programmable Gate arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
In the embodiments provided in the present invention, it should be understood that the disclosed method and apparatus can be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another observation, or some features may be omitted, or not performed. In addition, the communication connections between the components shown or discussed may be through interfaces, indirect couplings or communication connections of devices or units, and may be electrical, mechanical or other.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read-Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated unit according to the embodiment of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. With this understanding, technical embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a detection device (which may be a personal computer, a server, or a network device) to perform all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The detection-based method, apparatus and computer storage medium described in the embodiments of the present invention are only examples of the embodiments of the present invention, but are not limited thereto, and the detection-based method, apparatus and computer storage medium are all within the scope of the present invention.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. 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.
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 apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (18)
1. A detection method, characterized in that the method is applied to an induction heating apparatus; the induction heating device comprises a plurality of induction coils; the method comprises the following steps:
confirming that objects to be heated are not placed in the supporting areas corresponding to the induction coils, and respectively inputting input signals to the induction coils in a time division mode to obtain first output signals corresponding to the induction coils;
after a first preset time interval, obtaining a second output signal corresponding to each induction coil;
and determining a first change value of the first output signal and the second output signal, and determining that the object to be heated is placed on the supporting area corresponding to at least part of the plurality of induction coils based on the first change value.
2. The method according to claim 1, wherein the determining, based on the first variation value, that the supporting region corresponding to at least some of the plurality of induction coils places the object to be heated comprises:
judging whether the first change value is larger than a first preset threshold value or not;
and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
3. The method according to claim 2, wherein after determining that the object to be heated is placed on the supporting region corresponding to the first induction coil corresponding to the first variation value, the method further comprises:
after a second preset time interval, acquiring a second output signal corresponding to the first induction coil again;
judging whether a first change value between the second output signal and the first output signal is larger than a first preset threshold value again;
and determining that the object to be heated placed in the supporting region corresponding to the first induction coil is in a removed state.
4. A method according to any of claims 1-3, characterized in that the first input signal is a pulsed signal.
5. The method according to claim 2, wherein after determining that the object to be heated is placed on the supporting region corresponding to the first induction coil corresponding to the first variation value, the method further comprises:
obtaining a heating instruction; controlling to input a heating signal to the first induction coil based on the heating instruction.
6. The method of claim 5, further comprising:
obtaining a third output signal corresponding to the first induction coil;
after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil;
and determining a second variation value of the third output signal and the fourth output signal, and determining the state of the object to be heated on the support area corresponding to the first induction coil based on the second variation value.
7. The method according to claim 6, wherein the determining the state of the object to be heated on the support area corresponding to the first induction coil based on the second variation value includes:
judging whether the second variation value is larger than a second preset threshold value or not;
determining that the second change value is larger than a second preset threshold value, and determining that the object to be heated placed in the support region corresponding to the first induction coil is in a removed state;
and determining that the second variation value is less than or equal to a second preset threshold value, and determining that the object to be heated placed on the support area corresponding to the heated induction coil is in a placing state.
8. The method according to claim 7, wherein after determining that the object to be heated placed on the support area corresponding to the first induction coil is in a removed state, the method further comprises:
after a fourth preset time interval, a fourth output signal corresponding to the first induction coil is obtained again;
judging whether a second change value between the fourth output signal and the third output signal is larger than a second preset threshold value again;
and determining that the second change value is less than or equal to the second preset threshold value, and determining that the object to be heated is placed in the supporting area corresponding to the first induction coil again.
9. A detection device, the device comprising: a first obtaining unit and a determining unit, wherein:
the first obtaining unit is used for confirming that an object to be heated is not placed in the supporting areas corresponding to the plurality of induction coils, respectively inputting input signals to the plurality of induction coils in a time division mode, and obtaining a first output signal corresponding to each induction coil; after a first preset time interval, obtaining a second output signal corresponding to each induction coil;
the determining unit is used for determining a first change value of the first output signal and the second output signal based on the first output signal and the second output signal obtained by the first obtaining unit, and determining that an object to be heated is placed on a supporting area corresponding to at least part of the plurality of induction coils based on the first change value.
10. The apparatus according to claim 9, wherein the determining unit is further configured to determine whether the first variation value is greater than a first preset threshold; and determining that the first change value is larger than the first preset threshold value, and determining that an object to be heated is placed in the supporting area corresponding to the first induction coil corresponding to the first change value.
11. The apparatus of claim 10,
the first obtaining unit is further configured to obtain a second output signal corresponding to the first induction coil again after a second preset time interval;
the determining unit is further configured to re-determine whether a first variation value between the second output signal and the first output signal is greater than the first preset threshold; and determining that the object to be heated placed in the supporting region corresponding to the first induction coil is in a removed state.
12. The apparatus of any of claims 9-11, wherein the first input signal is a pulsed signal.
13. The apparatus of claim 10, further comprising: a second obtaining unit and a control unit, wherein:
the second obtaining unit is used for obtaining a heating instruction;
the control unit is used for controlling the heating signal to be input to the first induction coil based on the heating instruction obtained by the second obtaining unit.
14. The apparatus of claim 13,
the first obtaining unit is further configured to obtain a third output signal corresponding to the first induction coil; after a third preset time interval, obtaining a fourth output signal corresponding to the first induction coil;
the determining unit is further configured to determine a second variation value of the third output signal and the fourth output signal based on the third output signal and the fourth output signal obtained by the first obtaining unit, and determine the state of the object to be heated on the support region corresponding to the first induction coil based on the second variation value.
15. The apparatus according to claim 14, wherein the determining unit is further configured to determine whether the second variation value is greater than a second preset threshold; determining that the second change value is larger than a second preset threshold value, and determining that the object to be heated placed in the support region corresponding to the first induction coil is in a removed state; and determining that the second variation value is less than or equal to a second preset threshold value, and determining that the object to be heated placed on the support area corresponding to the heated induction coil is in a placing state.
16. The apparatus of claim 15,
the first obtaining unit is further configured to obtain a fourth output signal corresponding to the first induction coil again after a fourth preset time interval;
the determining unit is further configured to re-determine whether a second variation value between the fourth output signal and the third output signal is greater than the second preset threshold; and determining that the second change value is less than or equal to the second preset threshold value, and determining that the object to be heated is placed in the supporting area corresponding to the first induction coil again.
17. A detection device comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor implements the steps of the method of any one of claims 1 to 8 when executing the program.
18. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.
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