CN111245047A - Control method of electromagnetic device, electromagnetic device and storage medium - Google Patents
Control method of electromagnetic device, electromagnetic device and storage medium Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1236—Cooking devices induction cooking plates or the like and devices to be used in combination with them adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
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Abstract
The invention discloses a control method of an electromagnetic device, the electromagnetic device and a storage medium, wherein the control method of the electromagnetic device comprises the following steps: detecting whether an object is placed on the electromagnetic device; if yes, detecting whether the object is the equipment to be charged to obtain a first detection result; if the first detection result is yes, the LC oscillating circuit is controlled to charge the equipment to be charged at the first oscillating frequency; if the first detection result is negative, detecting whether the object is equipment to be heated or not to obtain a second detection result; and if the second detection result is yes, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency. By the aid of the electromagnetic device, the charging equipment can be charged and the heating equipment can be heated on the premise of protecting the charging equipment.
Description
Technical Field
The invention belongs to the technical field of equipment control, and particularly relates to a control method of an electromagnetic device, the electromagnetic device and a storage medium.
Background
With the continuous development of the electromagnetic induction theory and the application, more and more wireless charging products, such as mobile phones, electric toothbrushes and the like, appear in the market at present. The principle of wireless charging is that a receiving coil is additionally arranged in a product, and when the product is placed in a changing magnetic field, the receiving coil generates induction current to charge a battery in the product. The wireless charger is a device for generating a variable magnetic field with a specific frequency.
At present, some heating devices utilizing electromagnetic induction, such as induction cookers and IH rice cookers, generate a changing magnetic field through resonance of an electromagnetic coil of a circuit, and the changing magnetic field penetrates through the surface of metal to generate eddy current, so that heat is generated for heating.
In the prior art, when an electromagnetic device is controlled, charging or heating is performed according to the fact that a received signal is a charging signal or a heating signal, and the power required by general charging equipment is far less than that of the equipment to be heated, so that the problem that the equipment to be charged is damaged easily when misjudgment occurs.
Disclosure of Invention
In view of the above-mentioned disadvantages, the present invention provides a control method of an electromagnetic device, and a storage medium, where the control method of an electromagnetic device can charge a device to be charged and can also heat a device to be heated on the premise of protecting the device to be charged.
The invention is realized by the following technical scheme:
according to a first aspect, an embodiment of the present invention provides a control method for an electromagnetic apparatus including an LC oscillation circuit, the control method including: detecting whether an object is placed on the electromagnetic device; if yes, detecting whether the object is the equipment to be charged to obtain a first detection result; if the first detection result is yes, controlling the LC oscillating circuit to charge the equipment to be charged at a first oscillating frequency; if the first detection result is negative, detecting whether the object is equipment to be heated or not to obtain a second detection result; if the second detection result is yes, the LC oscillating circuit is controlled to heat the equipment to be heated at a second oscillating frequency.
In a preferred implementation, the method further comprises: acquiring the temperature of the electromagnetic device; judging whether the temperature of the electromagnetic device is less than or equal to a first preset temperature or not; and if the temperature of the electromagnetic device is less than or equal to a first preset temperature, executing a step of detecting whether an object is placed in the electromagnetic device.
In a preferred implementation, the method further comprises: acquiring the temperature of an object; judging whether the temperature of the object is less than or equal to a second preset temperature or not; and if the first detection result is yes, controlling the LC oscillating circuit to charge the device to be charged at the first oscillation frequency, including: if the first detection result is yes, and the temperature of the object is lower than the second preset temperature by a preset temperature, the LC oscillating circuit is controlled to charge the device to be charged at the first oscillating frequency.
In a preferred implementation, the temperature of the object is acquired; judging whether the temperature of the object is less than or equal to a third preset temperature or not; and if the second detection result is yes, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency, and the method comprises the following steps: and if the second detection result is yes and the temperature of the object is lower than the third preset temperature by a preset temperature, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency.
In a preferred implementation manner, if the determination result is yes, detecting whether the object is a device to be charged, and obtaining a first detection result includes: if the judgment result is yes, sending a communication signal; judging whether a feedback signal matched with the communication signal is received within a preset time period; if the feedback signal is received, the object is judged to be the equipment to be charged, the first detection result is yes, and a wireless charging protocol matched with the equipment to be charged is selected according to the feedback signal; if the feedback signal is not received, judging that the object is not the equipment to be charged, and judging that the first detection result is negative; and if the first detection result is negative, detecting whether the object is the equipment to be heated to obtain a second detection result, wherein the method comprises the following steps: if the first detection result is negative, sending a pot detection signal; and if the number of the pulse signals received in the unit time is within the preset pulse number range, determining that the object is the equipment to be heated, and determining that the second detection result is yes.
In a preferred implementation, after the step of controlling the LC oscillating circuit to charge the device to be charged at the first oscillating frequency, the method further includes: detecting whether a communication signal between the electromagnetic device and the equipment to be charged is abnormal or not; and if the communication signal is abnormal, returning to the step of detecting whether an object is placed in the electromagnetic device.
In a preferred implementation, after the step of controlling the LC oscillating circuit to heat the device to be heated at the second oscillation frequency, the method further comprises: detecting whether the current output by the electromagnetic device is abnormal; and if the current is abnormal, returning to the step of detecting whether an object is placed in the electromagnetic device.
In a preferred implementation, the electromagnetic device further comprises an indicator light, and the method further comprises: adjusting the color of the indicator light according to the working state of the electromagnetic device; or, the indicator lights include a first indicator light, a second indicator light and a third indicator light, and the method further includes: controlling the first indicator light, the second indicator light and the third indicator light to be turned on or off according to the working state of the electromagnetic device, wherein the working state comprises the following steps: the electromagnetic device is in a power-on standby state, the electromagnetic device is in a charging state of the equipment to be charged, and the electromagnetic device is in a heating state of the equipment to be heated.
According to a second aspect, embodiments of the present invention provide an electromagnetic apparatus, including an LC oscillating circuit and a controller, the controller being connected to the LC oscillating circuit, the controller including one or more processors; a storage device having one or more programs stored thereon; when the one or more programs are executed by the one or more processors, the one or more processors implement the control method of the electromagnetic apparatus according to the first aspect or any implementation manner of the first aspect.
According to a third aspect, the embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the control method of the electromagnetic apparatus according to the first aspect or any implementation manner of the first aspect.
The control method of the electromagnetic device provided by the application can bring the following beneficial effects:
1. whether an object is placed on the electromagnetic device is detected, whether the object is a device to be charged or not is detected, if yes, the LC oscillating circuit is controlled to charge the device to be charged at a first oscillating frequency, if not, whether the object is the device to be heated is detected, and if yes, the LC oscillating circuit is controlled to heat the device to be heated at a second oscillating frequency. By the control method, the electromagnetic device can charge the equipment to be charged and heat the equipment to be heated, whether an object is the equipment to be charged is detected firstly, and the equipment to be charged can be protected after being confirmed for many times, so that the problem that the equipment to be charged is damaged due to misjudgment is avoided.
2. When the temperature of the electromagnetic device is less than or equal to the first preset temperature, whether an object is placed in the electromagnetic device is judged, so that the electromagnetic device is protected, the electromagnetic device is prevented from working at a high temperature, and faults are easy to generate.
3. When the temperature of the object is lower than the second preset temperature by a preset temperature, the charging device is charged, the temperature of the object and the second preset temperature form a return difference, on one hand, the charging device can be protected, and on the other hand, the electromagnetic device can be prevented from being started and stopped back and forth, and the performance of the electromagnetic device is influenced.
4. When the temperature of the object is lower than the third preset temperature by a preset temperature, the heating device is heated, the temperature of the object and the third preset temperature form a return difference, on one hand, the heating device can be protected, and on the other hand, the electromagnetic device can be prevented from being started and stopped back and forth, and the performance of the electromagnetic device is influenced.
5. When the object is detected to be the equipment to be charged, judging whether the object is the equipment to be charged or not by judging whether a feedback signal matched with the communication signal is received or not, and selecting a wireless charging protocol matched with the equipment to be charged according to the feedback signal; when the object is detected not to be the charging device, whether the object is the heating device or not is determined according to the number of the pulse signals matched with the pot detection signal, so that the object can be charged or heated according to the attribute of the object.
6. The communication between the electromagnetic device and the equipment to be charged is detected, and if the communication is abnormal, whether an object is placed in the electromagnetic device can be judged again, so that the phenomenon that the object is damaged due to misjudgment is avoided.
7. The current output by the electromagnetic device is judged, and when the current is abnormal, the judgment of whether an object is placed in the electromagnetic device can be restarted, so that the phenomenon that the object is damaged due to misjudgment is avoided.
8. The working state of the electromagnetic device is indicated by adding the indicating lamp, so that a user can know the working state of the electromagnetic device more clearly, and the user experience is improved.
9. The controller of the electromagnetic device can execute the control method of the electromagnetic device, so that the electromagnetic device can be used for charging the equipment to be charged and heating the equipment to be heated.
10. The computer storage medium has stored thereon a computer program of the control method of the electromagnetic apparatus described above, so that the program on the computer storage medium can be executed to enable the electromagnetic apparatus using the computer storage medium to both charge the device to be charged and heat the device to be heated.
Drawings
FIG. 1 illustrates a flow chart of one embodiment of a method of controlling an electromagnetic apparatus of the present application;
FIG. 2 illustrates a flow chart of another embodiment of a method of controlling an electromagnetic apparatus of the present application;
FIG. 3 illustrates a block diagram of an embodiment of an electromagnetic apparatus of the present application;
FIG. 4 illustrates a flow chart of the operation of one embodiment of the electromagnetic apparatus of the present application;
FIG. 5 illustrates a work flow diagram of an alternative implementation of the electromagnetic apparatus of the present application;
FIG. 6 is a schematic diagram of a controller suitable for use in implementing embodiments of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the prior art, the power required by wireless charging equipment during charging is small, and the power required by equipment to be heated is large during heating; the required power of wireless charging is different from the required working frequency during heating; electromagnetic devices are prone to failure when switching between heating and charging functions.
Referring to FIG. 1, a flow chart 100 of one embodiment of a method of controlling an electromagnetic apparatus of the present application is shown. The control method of the electromagnetic device of the present embodiment can be applied to an electromagnetic device including an LC oscillation circuit. As shown in fig. 2, the control method of the electromagnetic apparatus includes:
In this embodiment, the electromagnetic device may detect whether an object is placed thereon, and specifically, the electromagnetic device may be provided with a capacitance detection circuit on a panel thereof, and when a capacitance changes, it indicates that an object is placed on the panel, and if the capacitance does not change, it indicates that no object is placed on the panel.
It is understood that the electromagnetic device may also detect whether an object is placed on its panel in other manners, for example, a sensor may be used to detect, and the embodiment is not limited thereto.
In a preferred implementation manner of this embodiment, before step 101, the temperature of the electromagnetic device may be obtained. Specifically, the electromagnetic device may acquire the problem of the electromagnetic device through a temperature sensor provided thereon.
Next, the electromagnetic device may determine whether the temperature of the electromagnetic device is less than or equal to a first preset temperature. If the temperature of the electromagnetic device is less than or equal to the first predetermined temperature, the electromagnetic device may perform step 101, i.e. detect whether an object is placed in the electromagnetic device.
Specifically, when the temperature of electromagnetic means is less than or equal to first preset temperature, just detect whether there is the object to place in electromagnetic means to can protect electromagnetic means, the inside solenoid of protector, inside circuit board etc. avoid electromagnetic means to work under overheated condition. The first predetermined temperature can here take, for example, a temperature value in the range from 90 ℃ to 150 ℃.
And 102, if yes, detecting whether the object is a device to be charged, and obtaining a first detection result.
In this embodiment, if an object is placed in the electromagnetic device, the electromagnetic device may detect whether the object is a device to be charged, so as to obtain a first detection result.
In some alternative implementations, the electromagnetic device may transmit the communication signal, where the electromagnetic device may transmit the communication signal at intervals, or may transmit the communication signal all the time, and the embodiment is not limited thereto.
Then, the electromagnetic device may determine whether feedback information matching the communication signal is received within a preset time period. The communication signal is, for example, a power signal, and if the object is a device to be charged, the device to be charged feeds back the communication signal in a format corresponding to the object as a feedback signal. If the feedback signal is received, it can be determined that the object is the device to be charged, and the first detection result is yes. Here, the device to be charged may be a device that can be wirelessly charged, such as a mobile phone.
The electromagnetic device may then select a wireless charging protocol that matches the device to be charged based on the feedback signal. Specifically, the feedback information returned by the device to be charged includes parameters such as a five-risk charging protocol supported by the device to be charged and current and voltage required by the device to be charged. Therefore, the electromagnetic device can select a wireless charging protocol and adjust parameters such as current and voltage output by the electromagnetic device according to the feedback information, so that the charging efficiency of the equipment to be charged is improved.
Preferably, bidirectional communication is continuously performed between the transmitting coil of the electromagnetic device and the receiving coil of the device to be charged, so that the electromagnetic device can also judge whether the device to be charged is correctly placed on the electromagnetic device according to the strength of the communication signal. In this case, the electromagnetic device is equivalent to a wireless charger, and if the device to be charged is placed at an inaccurate position, for example, a charging area is deviated, the charging efficiency may be low. Therefore, the electromagnetic device can judge whether the placement position of the device to be charged is accurate or not through the intensity of the communication signal.
In this embodiment, if the first detection result is yes, the electromagnetic device may control the LC oscillating circuit thereof to charge the device to be charged at the first oscillating frequency.
Since the power required by the device to be charged is usually less than the power required by the heating device, in order to avoid damaging the device to be charged, in this embodiment, it is first detected whether the object is the device to be charged, and if so, the operating frequency of the LC oscillating circuit is controlled to be the first oscillating frequency, so as to adjust the current and power output by the electromagnetic device to be the current and power matched with the device to be charged, thereby better protecting the device to be charged, and simultaneously improving the charging efficiency.
In a preferred implementation manner of this embodiment, the electromagnetic device may further acquire the temperature of the object first. For example, the temperature of the object may be detected by a temperature sensor, which is not limited in this embodiment.
Next, the electromagnetic device may determine whether the temperature of the object is less than or equal to a second preset temperature. The second predetermined temperature here may take a temperature value in the range of 50 deg.c-80 deg.c, for example.
When the object is detected to be the device to be charged and the temperature of the object is lower than the second preset temperature by the preset temperature, the electromagnetic device can control the LC oscillating circuit to charge the device to be charged at the first oscillating frequency.
It should be noted that, by setting the second preset temperature, on one hand, the device to be charged can be protected to avoid overheating; on the other hand, the temperature of the object is charged when being lower than the second preset temperature by the preset temperature, so that the temperature of the object and the second preset temperature have a return difference, the electromagnetic device is prevented from being immediately stopped being charged when the temperature of the object exceeds the second preset temperature and being restored to be charged when the temperature of the object is lower than the second preset temperature, and the electromagnetic device is prevented from being frequently started and stopped, so that electronic elements of the electromagnetic device are damaged. For example, the wireless charging may be resumed when the temperature is reduced to 10 ℃ below a second preset temperature, where 10 ℃ is the above-mentioned preset temperature. Of course, the predetermined temperature may also be set according to actual needs, and the predetermined temperature may also be a temperature range, which is not limited in this embodiment.
Here, when the temperature of the device to be charged exceeds the second preset temperature, the electromagnetic device may continue to maintain the two-way communication with the device to be charged at this time, but stop the wireless charging, and wait for the detected temperature of the device to be charged to return to a reasonable range, for example, return to the wireless charging when the detected temperature of the device to be charged falls below the second preset temperature by 10 ℃.
And 104, if the first detection result is negative, detecting whether the object is the equipment to be heated, and obtaining a second detection result.
In this embodiment, if it is detected that the object is not the device to be charged, that is, if the first detection result is no, the electromagnetic device may further detect whether the object is the device to be heated. The device to be heated can be, for example, a pot, a heatable cup, etc.
In particular, the electromagnetic device may transmit a pan detection signal, where the pan detection signal is typically a pan detection pulse of a certain frequency. If a heatable cup bottom or a heatable pot which is specially processed is placed on the panel of the electromagnetic device, the pot detection signal meets the heatable equipment and returns a pulse signal, whether the number of the received pulse signals in unit time is within a preset pulse number range can be judged, if yes, the object is determined to be equipment to be heated, and a second detection result is yes.
Here, the sending frequency of the pan detection signal may be a set of pan detection signals sent every 0.5s, and thus, whether the device to be heated is normally detected may be determined within 1-60 s.
In addition, optionally, if the number of the pulse signals received in the unit time is not within the preset pulse number range, it is indicated that the object is a foreign object and cannot be charged or heated, for example, a metal object such as a key, and then the electromagnetic device may stop working, for example, turning off the start switch. Therefore, the electromagnetic device can be protected, and the energy consumption of the electromagnetic device can be saved.
And 105, if the second detection result is yes, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency.
In this embodiment, if it is detected that the object is a device to be heated, the electromagnetic device may control the LC oscillating circuit to heat the device to be heated at the second oscillating frequency.
Specifically, after determining that the object is the device to be heated, the electromagnetic device may start heating, and control the operating frequency of the LC oscillating circuit to be the second oscillating frequency. The second oscillation frequency is usually different from the first oscillation frequency, so that the electromagnetic device heats the device to be heated more than the device to be charged, and the heating efficiency during heating can be improved.
In a preferred implementation manner of this embodiment, the electromagnetic device may further obtain the temperature of the object, and determine whether the temperature of the object is less than or equal to a third preset temperature. The third preset temperature is set in order to protect the equipment to be heated, and is therefore generally understood to be a higher temperature value than the second preset temperature mentioned above. For example, the third preset temperature may take a temperature value in the range of 90 ℃ to 110 ℃.
It should be noted here that the third preset temperature is set, so that on one hand, the equipment to be heated can be protected, and the temperature of the equipment to be heated is prevented from being too high; on the other hand, when the temperature of the object is lower than the third preset temperature by a preset temperature, the object is heated, so that a return difference exists between the temperature of the object and the third preset temperature, and the electromagnetic device is prevented from being stopped being heated immediately when the temperature of the object exceeds the third preset temperature and being recovered to be charged when the temperature of the object is lower than the third preset temperature, so that the electromagnetic device is prevented from being started and stopped frequently and an electronic element of the electromagnetic device is damaged. For example, the wireless charging may be resumed when the temperature is reduced to 10 ℃ below a third preset temperature, where 10 ℃ is the above-mentioned preset temperature. Of course, the predetermined temperature may also be set according to actual needs, and the predetermined temperature may also be a temperature range, which is not limited in this embodiment.
According to the control method of the electromagnetic device, whether an object is placed on the electromagnetic device or not is detected, whether the object is a device to be charged or not is detected, if yes, the LC oscillating circuit is controlled to charge the device to be charged at the first oscillating frequency, if not, whether the object is the device to be heated is detected, and if yes, the LC oscillating circuit is controlled to heat the device to be heated at the second oscillating frequency. By the control method, the electromagnetic device can charge the equipment to be charged and heat the equipment to be heated, and whether an object is the equipment to be charged is detected, so that the equipment to be charged can be protected, and the problem of damaging the equipment to be charged is avoided.
With further reference to FIG. 2, a flow 200 of another embodiment of a method of controlling an electromagnetic apparatus of the present application is shown. The flow 200 of the electromagnetic device control method, the electromagnetic device control method of the present embodiment, may be applied to an electromagnetic device including an LC oscillation circuit. As shown in fig. 2, the control method of the electromagnetic apparatus includes:
In step 203, if the first detection result is yes, the LC oscillating circuit is controlled to charge the device to be charged with the first oscillating frequency.
In this embodiment, step 201, step 202, and step 203 may be performed in a manner similar to step 101, step 102, and step 103 in the foregoing embodiment, respectively, and the above description for step 101, step 102, and step 103 also applies to step 201, step 202, and step 203, respectively, and is not repeated here.
In this embodiment, when the electromagnetic device charges the device to be charged, it may further detect whether a communication signal between the electromagnetic device and the device to be charged is abnormal.
Specifically, in order to avoid the problem that the electromagnetic device continues to charge after the device to be charged is misplaced or removed, in this embodiment, the electromagnetic device may detect whether the communication signal between the electromagnetic device and the device to be charged is abnormal in real time, for example, detect whether the feedback signal is normally received every preset time interval, if the feedback signal is normally received, determine that the communication signal between the electromagnetic device and the device to be charged is normal, and if the feedback signal is not received within the preset time interval, determine that the communication signal between the electromagnetic device and the device to be charged is abnormal.
Generally, the sending and receiving period of the communication signal between the device to be charged and the electromagnetic device is in ms level, so that the electromagnetic device can determine whether to receive the feedback signal of the device to be charged in a very short time, and therefore, in an optional implementation manner of this embodiment, it can determine whether to receive the feedback signal of the device to be charged within 50ms-2s, and if the feedback signal is received within the time, it indicates that the communication signal between the device to be charged and the electromagnetic device is normal.
In step 205, if the communication signal is abnormal, the process returns to step 201.
In this embodiment, if it is detected that the communication signal between the electromagnetic device and the device to be charged is abnormal, the step 201 needs to be returned, that is, the step of detecting whether an object is placed on the electromagnetic device is returned, so that it can be known in time whether the device to be charged is taken away by a user. Meanwhile, when the equipment is switched, the equipment can be timely obtained to be the equipment to be charged or the equipment to be heated through redetection, and the phenomenon of mistaken charging or mistaken heating is avoided.
And step 206, if the first detection result is negative, detecting whether the object is the equipment to be heated, and obtaining a second detection result.
And step 207, if the second detection result is yes, controlling the LC oscillating circuit to heat the device to be heated at the second oscillating frequency.
In this embodiment, step 206 and step 207 may be performed in a manner similar to that of step 104 and step 105 in the foregoing embodiment, respectively, and the above description for step 104 and step 105 also applies to step 206 and step 207, respectively, and is not repeated here.
In a preferred implementation manner of this embodiment, the electromagnetic device may further detect whether the current output by the electromagnetic device is abnormal. Specifically, when the electromagnetic device heats the device to be heated, the carriers at the bottom of the device to be heated usually move randomly at a high speed by the alternating current, and the carriers collide with atoms and rub against each other to generate heat energy. Specifically, a current threshold may be set, the current detected in real time is compared with the current threshold, and if the current is not within the current threshold, for example, an abrupt change occurs, the current is abnormal.
If the current is abnormal, the step 201 is returned, that is, the step of detecting whether an object is placed on the electromagnetic device is returned, so that the heating abnormality of the electromagnetic device caused by the removal of the equipment to be heated or other reasons in the heating process of the equipment to be heated can be avoided, and the electromagnetic device or the equipment to be heated is damaged. Meanwhile, when the equipment is switched, the equipment can be timely obtained to be the equipment to be charged or the equipment to be heated through redetection, and the phenomenon of mistaken charging or mistaken heating is avoided.
In this embodiment, the electromagnetic device sets different operating parameters of the device to be heated and operating parameters of the device to be charged, for example, the current threshold value during current detection of the device to be heated is generally greater than the current threshold value during current detection of the device to be charged, so that it can be prevented that the electromagnetic device heats the device to be charged by using the operating parameters of electromagnetic heating when communication is wrong, and thus the device to be charged breaks down.
By the control method of the electromagnetic device, the current output by the electromagnetic device can be judged, and when the current is abnormal, whether an object is placed in the electromagnetic device can be judged again, so that the phenomenon that the object is damaged due to misjudgment is avoided. Meanwhile, when the equipment is switched, the equipment can be timely obtained to be the equipment to be charged or the equipment to be heated through redetection, and the phenomenon of mistaken charging or mistaken heating is avoided.
With continued reference to FIG. 3, a block diagram 300 of one embodiment of an electromagnetic apparatus of the present application is shown. As shown in fig. 3, the electromagnetic device 300 includes a controller 301 and an LC oscillating circuit 302 connected to the controller 301.
The work flow 400 of the electromagnetic apparatus 300 of the present embodiment can be as shown in fig. 4:
after the electromagnetic device is powered on, firstly, judging whether the temperature of a temperature sensor for detecting the electromagnetic device is greater than a first temperature point, if so, not doing any operation, and continuously detecting the temperature; if not, whether the capacitance of the transmitting coil changes or not is judged, if so, the object placed on the electromagnetic device is indicated, a communication signal is sent to wait for response, and if not, no operation is performed, and the temperature is continuously detected.
If the communication signal is sent, whether the reply is received within a period of time is judged, if the reply is received, the device to be charged is indicated to be the device to be charged, whether the temperature of the temperature sensor of the device to be charged is detected to be greater than a second temperature point is judged, if the reply is received, the temperature of the device to be charged is indicated to be overhigh, no operation is carried out at the moment, the temperature is continuously detected, if the temperature is not detected, a proper wireless charging protocol is configured according to the received information, wireless charging is started, communication is continuously carried out, the temperature of the device to be charged is detected, then, whether the communication is abnormal (if the response is not received within a period of time), if the communication is abnormal, the step of judging whether the temperature of the temperature sensor of the electromagnetic device is greater than the first temperature point is returned, if the communication is normal, whether the temperature of the device to be charged is greater than the second temperature, and waiting for the temperature reduction of the equipment to be charged, and if the temperature of the equipment to be charged is not greater than the preset temperature, continuing to charge the equipment wirelessly.
If the communication signal is sent, whether the reply is received within a period of time is judged, if the reply is not received, the heating appliance is judged, a pot detection signal is sent, whether the pot is correctly detected is judged, if the pot is correctly detected, heating is started, parameters such as current are continuously judged, whether the heating parameters are abnormal (such as abnormal current, sudden change of current and the like) is continuously judged, and if the heating parameters are abnormal, the step of judging whether the temperature of the temperature sensor of the electromagnetic device is greater than a first temperature point is returned. If the pot is not correctly detected, a pot detection signal is continuously sent for a period of time, whether the pot is not correctly detected in the period of time is judged, and if yes, the step of judging whether the temperature of the temperature sensor of the electromagnetic device is greater than the first temperature point is returned.
In a preferred implementation manner of this embodiment, the electromagnetic device further includes an indicator light, and the electromagnetic device can adjust the color of the indicator light according to the working state of the electromagnetic device. Alternatively, the indicator lights may include three indicator lights, a first indicator light, a second indicator light, and a third indicator light, and the three indicator lights may be different in color. The electromagnetic device can control the first indicator light, the second indicator light and the third indicator light to be turned on or turned off according to the working state of the electromagnetic device, so that a user can know the working state of the electromagnetic device more clearly, and the user experience is improved. The working states here include: the electromagnetic device is in a power-on standby state, the electromagnetic device is in a charging state of the equipment to be charged, and the electromagnetic device is in a heating state of the equipment to be heated.
Specifically, the work flow 500 of the electromagnetic apparatus of the present implementation may be as shown in fig. 5:
after the electromagnetic device is powered on, firstly, the three-color indicator lamp displays a first color or a first LED lamp is turned on, whether the temperature of a temperature sensor of the electromagnetic device is detected to be higher than a first temperature point or not is judged, if yes, no operation is performed, and the temperature is continuously detected; if not, judging whether the capacitance of the transmitting coil is changed, if so, indicating that an object is placed on the electromagnetic device, sending a communication signal to wait for response, and if not, continuously detecting the temperature without any operation.
If the communication signal is sent, whether the reply is received within a period of time is judged, if the reply is received, the device to be charged is indicated, whether the temperature of the temperature sensor of the device to be charged is detected to be greater than a second temperature point is judged, if the temperature of the device to be charged is too high, no operation is performed at the moment, the temperature is continuously detected, if the temperature is not detected, a proper wireless charging protocol is configured according to the received information, wireless charging is started, communication is continuously performed, the temperature of the device to be charged is detected, at the moment, a three-color indicator lamp displays a second color or a second LED lamp is on, and a third LED lamp is off. And then, judging whether the communication is abnormal or not (if no response is received at a certain time interval), if so, returning to the step of judging whether the temperature of the temperature sensor of the electromagnetic device is greater than the first temperature point, if so, continuously detecting whether the temperature of the equipment to be charged is greater than the second temperature point, if so, not doing any operation, continuously detecting the temperature, waiting for the temperature of the equipment to be charged to be reduced, and if not, continuously carrying out wireless charging.
If the communication signal is sent, whether the reply is received within a period of time is judged, if the reply is not received, the heating appliance is judged, a pot detection signal is sent, whether the pot is correctly detected is judged, if the pot is correctly detected, heating is started, parameters such as current and the like are continuously judged, at the moment, a three-color indicator lamp displays a third color, or a third LED lamp is turned on, a second LED lamp is turned off, whether the parameters and the heating parameters are abnormal (such as current abnormality, current mutation and the like) is continuously judged, and if the parameters and the heating parameters are abnormal, the step of judging whether the temperature of a temperature sensor of the electromagnetic device is larger than a first temperature point is returned. If the pot is not correctly detected, a pot detection signal is continuously sent for a period of time, whether the pot is not correctly detected in the period of time is judged, and if yes, the step of judging whether the temperature of the temperature sensor of the electromagnetic device is greater than the first temperature point is returned.
The electromagnetic device of the embodiment can be used for charging equipment to be charged and heating equipment to be heated, and can also be used for detecting in time when the equipment is switched, so that the phenomenon of misjudgment is avoided, and the equipment to be charged is prevented from being damaged.
Referring now to FIG. 6, a block diagram of a controller suitable for use in implementing embodiments of the present application is shown. The controller shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 6, the controller may include a processing device (e.g., central processing unit, graphics processor, etc.) 601 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage device 608 into a Random Access Memory (RAM) 603. In the RAM 603, various programs and data necessary for the operation of the controller are also stored. The processing device 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
Generally, the following devices may be connected to the I/O interface 605: input devices 606 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; an output device 607 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 608 including, for example, tape, hard disk, etc.; and a communication device 609. The communication means 609 may allow the controller to communicate with other devices wirelessly or by wire to exchange data. While fig. 6 illustrates a controller having various devices, it is to be understood that not all illustrated devices are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided. Each block shown in fig. 6 may represent one device or may represent multiple devices as desired.
In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication means 609, or may be installed from the storage means 608, or may be installed from the ROM 602. The computer program, when executed by the processing device 601, performs the above-described functions defined in the methods of the embodiments of the present application.
It should be noted that the computer readable medium described in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
In embodiments of the application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In embodiments of the present application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the controller; or may exist separately and not be assembled into the server. The computer readable medium carries one or more programs which, when executed by the controller, cause the controller to: detecting whether an object is placed on the electromagnetic device; if yes, detecting whether the object is the equipment to be charged to obtain a first detection result; if the first detection result is yes, the LC oscillating circuit is controlled to charge the equipment to be charged at the first oscillating frequency; if the first detection result is negative, detecting whether the object is equipment to be heated or not to obtain a second detection result; and if the second detection result is yes, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency.
Computer program code for carrying out operations for embodiments of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present application is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept as defined above. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present application are mutually replaced to form the technical solution.
Claims (10)
1. A control method of an electromagnetic apparatus including an LC oscillating circuit, characterized by comprising:
detecting whether an object is placed on the electromagnetic device;
if yes, detecting whether the object is a device to be charged or not to obtain a first detection result;
if the first detection result is yes, controlling the LC oscillating circuit to charge the equipment to be charged at a first oscillating frequency;
if the first detection result is negative, detecting whether the object is equipment to be heated or not to obtain a second detection result;
and if the second detection result is yes, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency.
2. The method of controlling an electromagnetic device according to claim 1, further comprising:
acquiring the temperature of the electromagnetic device;
judging whether the temperature of the electromagnetic device is less than or equal to a first preset temperature or not;
and if the temperature of the electromagnetic device is less than or equal to the first preset temperature, executing the step of detecting whether an object is placed in the electromagnetic device.
3. The method of controlling an electromagnetic device according to claim 1, further comprising:
acquiring the temperature of the object;
judging whether the temperature of the object is less than or equal to a second preset temperature or not; and
if the first detection result is yes, controlling the LC oscillating circuit to charge the device to be charged at a first oscillating frequency, including:
and if the first detection result is yes, and the temperature of the object is lower than the second preset temperature by a preset temperature, controlling the LC oscillating circuit to charge the equipment to be charged at a first oscillating frequency.
4. The method of controlling an electromagnetic device according to claim 1, further comprising:
acquiring the temperature of the object;
judging whether the temperature of the object is less than or equal to a third preset temperature or not; and
if the second detection result is yes, controlling the LC oscillating circuit to heat the device to be heated at a second oscillating frequency, including:
and if the second detection result is yes, and the temperature of the object is lower than the third preset temperature by a preset temperature, controlling the LC oscillating circuit to heat the equipment to be heated at a second oscillating frequency.
5. The control method of an electromagnetic device according to claim 1,
if yes, detecting whether the object is a device to be charged to obtain a first detection result, wherein the detecting comprises:
if yes, sending a communication signal;
judging whether a feedback signal matched with the communication signal is received within a preset time period;
if the feedback signal is received, the object is judged to be a device to be charged, the first detection result is yes, and a wireless charging protocol matched with the device to be charged is selected according to the feedback signal;
if the feedback signal is not received, determining that the object is not the equipment to be charged, and judging that the first detection result is negative;
and the number of the first and second groups,
if the first detection result is negative, detecting whether the object is to-be-heated equipment or not to obtain a second detection result, wherein the second detection result comprises the following steps:
if the first detection result is negative, sending a pot detection signal;
and if the number of the pulse signals received in unit time is within a preset pulse number range, determining that the object is the equipment to be heated, and determining that the second detection result is yes.
6. The method of claim 1, wherein after the step of controlling the LC oscillating circuit to charge the device to be charged at the first oscillating frequency, the method further comprises:
detecting whether a communication signal between the electromagnetic device and the equipment to be charged is abnormal or not;
and if the communication signal is abnormal, returning to the step of detecting whether an object is placed in the electromagnetic device.
7. The method of claim 1, wherein after the step of controlling the LC oscillating circuit to heat the device to be heated at the second oscillating frequency, the method further comprises:
detecting whether the current output by the electromagnetic device is abnormal;
and if the current is abnormal, returning to the step of detecting whether an object is placed in the electromagnetic device.
8. The method of controlling an electromagnetic device according to any one of claims 1 to 7, wherein the electromagnetic device further includes an indicator light, the method further comprising:
adjusting the color of the indicator light according to the working state of the electromagnetic device; or,
the indicator lights include a first indicator light, a second indicator light, and a third indicator light, the method further comprising:
controlling the first indicator light, the second indicator light and the third indicator light to be turned on or off according to the working state of the electromagnetic device, wherein the working state comprises the following steps: the electromagnetic device is in a power-on standby state, the electromagnetic device is in a charging state on the equipment to be charged, and the electromagnetic device is in a heating state on the equipment to be heated.
9. An electromagnetic device, comprising an LC oscillating circuit and a controller, the controller being connected to the LC oscillating circuit, the controller comprising:
one or more processors;
a storage device having one or more programs stored thereon;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the control method of the electromagnetic apparatus according to any one of claims 1 to 8.
10. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements a method of controlling an electromagnetic apparatus according to any one of claims 1 to 8.
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