Position Detection Method, Device and Electronic Device for Cooking Appliance

Abstract

The present invention provides a method, a device and an electronic device for detecting the position of a cooking appliance. Among them, the cooking appliance is arranged above the heating appliance, and the wireless transmitting device of the heating appliance supplies power to the wireless receiving device of the cooking appliance; the method includes: collecting a first voltage of the wireless receiving device; determining a first distance between the cooking appliance and the heating appliance based on the first voltage; if the first distance is greater than a preset first threshold, sending an alarm signal. In this way, the first distance between the cooking appliance and the heating appliance can be determined based on the first voltage of the wireless receiving device, and an alarm signal is sent when the first distance is greater than the first threshold. In this way, the distance between the cooking appliance and the heating appliance can be detected, potential safety hazards of damaging the IGBT can be prevented, and the user experience can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular, to a method, device and electronic device for detecting the position of a cooking appliance. Background Art

[0002] The combined cooking device includes two functional modes: an induction cooker and a pressure cooker. The heating appliance of the cooking device is the induction cooker base, and the cooking appliance is a pot or a pressure cooker. The pressure cooker is placed on the induction cooker base, and the induction cooker base is equipped with a wireless power supply device. The wireless power supply device powers the separated pressure cooker detection system.

[0003] The existing pressure cooker detection system includes devices such as temperature detection, pressure detection, and lid opening / closing detection, which can detect contents such as temperature, pressure, and lid opening / closing. In addition, the existing pressure cooker detection system can also detect whether a pressure cooker is placed on the induction cooker base by obtaining the number of resonant pulses. The principle is as follows: Trigger the IGBT (Insulated Gate Bipolar Transistor) through a single pulse, and then turn off the IGBT. At this time, the resonant system generates a damped oscillation. When a pressure cooker is placed, the number of damped oscillations is small.

[0004] However, the above pressure cooker detection system cannot detect the distance between the cooking appliance and the heating appliance. If the distance between the cooking appliance and the heating appliance changes, there is a risk that the collector voltage of the IGBT is too high, which may cause overvoltage breakdown, thereby damaging the IGBT, bringing potential safety hazards, and at the same time reducing the user experience. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a method, device and electronic device for detecting the position of a cooking appliance, so as to detect the distance between the cooking appliance and the heating appliance, prevent potential safety hazards of damaging the IGBT, and improve the user experience.

[0006] In a first aspect, an embodiment of the present invention provides a method for detecting the position of a cooking appliance. The cooking appliance is disposed above the heating appliance, and the wireless transmitting device of the heating appliance powers the wireless receiving device of the cooking appliance. The method includes: collecting a first voltage of the wireless receiving device; determining a first distance between the cooking appliance and the heating appliance based on the first voltage; and if the first distance is greater than a preset first threshold, sending an alarm signal.

[0007] In a preferred embodiment of the present application, the wireless receiving device includes a voltage sampling module, a first resistor, and a second resistor; the step of collecting the first voltage of the wireless receiving device includes: collecting the second voltage of the wireless receiving device through the voltage sampling module; wherein the second voltage is the voltage after the first voltage is divided by the first resistor and the second resistor; determining the first voltage based on the second voltage, the first resistor, and the second resistor.

[0008] In a preferred embodiment of the present application, the step of determining the first distance between the cooking appliance and the heating appliance based on the first voltage includes: determining the second distance between the coil of the wireless transmitting device and the coil of the wireless receiving device based on the first voltage; determining the first distance based on the second distance.

[0009] In a preferred embodiment of the present application, the corresponding relationship between the second distance and the first voltage at the operating frequency of each wireless transmitting device is pre-stored; the step of determining the second distance between the first power supply coil of the wireless transmitting device and the second power supply coil of the wireless receiving device based on the first voltage includes: determining the target operating frequency of the wireless transmitting device; determining the second distance corresponding to the first voltage based on the corresponding relationship corresponding to the first voltage and the target operating frequency.

[0010] In a preferred embodiment of the present application, the step of determining the second distance between the first power supply coil of the wireless transmitting device and the second power supply coil of the wireless receiving device based on the first voltage includes: adjusting the operating frequency of the wireless transmitting device, recording the adjusted multiple operating frequencies and the first voltages corresponding to the multiple operating frequencies; determining the second distances corresponding to the multiple first voltages based on the corresponding relationship corresponding to the multiple first voltages and the multiple operating frequencies; performing an average calculation or a weighted calculation on the second distances corresponding to the multiple first voltages, and taking the calculation result as the second distance.

[0011] In a preferred embodiment of the present application, the step of determining the first distance based on the second distance includes: determining the first positional relationship between the heating appliance and the wireless transmitting device and the second positional relationship between the cooking appliance and the wireless receiving device; determining the first distance based on the first positional relationship, the second positional relationship, and the second distance.

[0012] In a preferred embodiment of the present application, the step of sending an alarm signal if the first distance is greater than a preset first threshold includes: obtaining the heating power of the heating appliance; determining the first threshold corresponding to the heating power; sending an alarm signal if the first distance is greater than the first threshold.

[0013] In a preferred embodiment of the present application, the method further includes: reducing the heating power if the first distance is greater than a preset first threshold and the heating power is greater than a preset second threshold.

[0014] In a second aspect, an embodiment of the present invention further provides a position detection device for a cooking appliance. The cooking appliance is disposed above a heating appliance, and a wireless transmitting device of the heating appliance supplies power to a wireless receiving device of the cooking appliance. The device includes: a first voltage acquisition module configured to acquire a first voltage of the wireless receiving device; a first distance determination module configured to determine a first distance between the cooking appliance and the heating appliance based on the first voltage; and an alarm signal sending module configured to send an alarm signal if the first distance is greater than a preset first threshold.

[0015] In a third aspect, an embodiment of the present invention further provides an electronic device, including a processor and a memory. The memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the above-mentioned position detection method for the cooking appliance.

[0016] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium storing computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions cause the processor to implement the above-mentioned position detection method for the cooking appliance.

[0017] The embodiments of the present invention bring the following beneficial effects:

[0018] A position detection method, device, and electronic device for a cooking appliance provided by an embodiment of the present invention can determine a first distance between the cooking appliance and the heating appliance based on a first voltage of a wireless receiving device, and send an alarm signal when the first distance is greater than a first threshold. In this way, the distance between the cooking appliance and the heating appliance can be detected, potential safety hazards of damaging the IGBT can be prevented, and the user experience can be improved.

[0019] Other features and advantages of the present disclosure will be described in the following specification, or can be inferred from the specification without doubt, or can be learned by implementing the above technologies of the present disclosure.

[0020] To make the above objects, features, and advantages of the present disclosure more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1Flow chart of a method for detecting the position of a cooking appliance provided by an embodiment of the present invention;

[0023] Figure 2 Flow chart of another method for detecting the position of a cooking appliance provided by an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of a combined cooking device provided by an embodiment of the present invention;

[0025] Figure 4 Circuit block diagram of a wireless power supply device provided by an embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the main single path of an induction cooker with a single-tube topology scheme provided by an embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the VC value and PPG value during high-power operation provided by an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the VC value and PPG value during low-power operation provided by an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the operating frequency value range of wireless power supply provided by an embodiment of the present invention;

[0030] Figure 9 Schematic diagram of the relationship between a first voltage and a second distance provided by an embodiment of the present invention;

[0031] Figure 10 Schematic diagram of the relationship between the first voltage and the second distance at various operating frequencies provided by an embodiment of the present invention;

[0032] Figure 11 Schematic diagram of the structure of a position detection device for a cooking appliance provided by an embodiment of the present invention;

[0033] Figure 12 Schematic diagram of the structure of another position detection device for a cooking appliance provided by an embodiment of the present invention;

[0034] Figure 13 Schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. Detailed implementation manners

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Currently, the combined cooking device includes two functional modes: an induction cooker and a pressure cooker. The heating appliance of the cooking device is the induction cooker base, and the cooking appliance is a pot or a pressure cooker. The pressure cooker is placed on the induction cooker base, and the induction cooker base is equipped with a wireless power supply device. The wireless power supply device powers the separated pressure cooker detection system. Among them, the pressure cooker detection system includes devices such as temperature detection, pressure detection, and lid opening and closing detection, and can also detect whether a pressure cooker is placed on the induction cooker base.

[0037] Due to cost factors, a general electromagnetic heating system is a single-tube topology solution, called a quasi-resonant system. For such a resonant system, the requirement for the disk spacing (the spacing between the bottom of the pot to be heated and the induction cooker coil) of the system is relatively strict. It is usually controlled within 10 ± 1 mm. Within the normal disk spacing range, the collector (VC) voltage of the power transistor IGBT during operation is controlled within a safe range. Usually, if the rated breakdown voltage of the selected IGBT is 1200V, the actual design controls the heating power at 1200 * 0.9 = 1080V, that is, derating by 0.9.

[0038] Generally speaking, the higher the heating power, the higher the VC value. When the induction cooker operates at the maximum power, the VC is generally controlled below 1080V. When the disk spacing is too large (exceeding 11 mm) due to various reasons (such as: there are foreign objects such as rice grains under the pot), if the induction cooker operates at the maximum power, the VC value has a risk of exceeding 1080V, and even exceeding 1200V, which may cause overvoltage breakdown, thus damaging the IGBT, bringing potential safety hazards, and at the same time reducing the user experience.

[0039] Based on this, a method, device, and electronic device for detecting the position of a cooking appliance provided by the embodiments of the present invention can be applied to the controller of a combined cooking device, can detect the spacing between the cooking appliance and the heating appliance, prevent potential safety hazards of damaging the IGBT, and improve the user experience.

[0040] To facilitate the understanding of this embodiment, first, a method for detecting the position of a cooking appliance disclosed in the embodiments of the present invention will be introduced in detail.

[0041] Embodiment 1:

[0042] The embodiments of the present invention provide a method for detecting the position of a cooking appliance. Refer toFigure 1 Flow chart of a position detection method for a cooking appliance, the position detection method for the cooking appliance comprising the following steps:

[0043] Step S102, collect a first voltage of a wireless receiving device.

[0044] In this embodiment, the combined cooking device includes a cooking appliance and a heating appliance. Among them, the cooking appliance is arranged above the heating appliance, and the wireless transmitting device of the heating appliance supplies power to the wireless receiving device of the cooking appliance.

[0045] Among them, the heating appliance can be an ordinary cooking pot (such as a soup pot) or a pressure cooking pot, and the cooking appliance can be an induction cooker. The wireless transmitting device can be installed inside the induction cooker, and the wireless receiving device can be installed inside the ordinary cooking pot or the pressure cooking pot. The first voltage of the wireless receiving device can be understood as the voltage value after the wireless receiving device receives power supply and performs rectification and filtering, and can be called Vdd.

[0046] Step S104, determine a first distance between the cooking appliance and the heating appliance based on the first voltage.

[0047] The first distance between the cooking appliance and the heating appliance can be understood as the distance between the bottom of the heating pot and the coil of the heating appliance. When the operating frequency of the wireless transmitting device is fixed, there is a certain corresponding relationship between the first voltage and the first distance. In this embodiment, the corresponding relationship at the operating frequency of the wireless transmitting device can be determined in advance, and the first distance can be calculated according to the above corresponding relationship.

[0048] Step S106, if the first distance is greater than a preset first threshold, send an alarm signal.

[0049] If the first distance is greater than the preset first threshold, there may be a risk of too high collector voltage of the IGBT, which may cause overvoltage breakdown, thus damaging the IGBT, bringing potential safety hazards, and at the same time reducing the user experience. Therefore, in this embodiment, an alarm signal can be sent to the user when the first distance is greater than the first threshold. For example: send an alarm signal to a terminal device with communication functions such as the user's mobile phone, computer, or send an alarm signal on the display panel of the combined cooking device. In addition, the alarm signal sent can be text information, or information such as sound and light, to remind the user to deal with it in time.

[0050] A position detection method for a cooking appliance provided by an embodiment of the present invention can determine a first distance between the cooking appliance and the heating appliance based on the first voltage of the wireless receiving device, and send an alarm signal when the first distance is greater than the first threshold. In this way, the distance between the cooking appliance and the heating appliance can be detected, potential safety hazards of damaging the IGBT can be prevented, and the user experience can be improved.

[0051] Embodiment 2:

[0052] This embodiment provides another method for detecting the position of a cooking appliance, which is implemented on the basis of the above embodiment. As shown in the flowchart of another method for detecting the position of a cooking appliance, the method for detecting the position of the cooking appliance in this embodiment includes the following steps: Figure 2 As shown in the flowchart of another method for detecting the position of a cooking appliance, the method for detecting the position of the cooking appliance in this embodiment includes the following steps:

[0053] Step S202: Collect the first voltage of the wireless receiving device.

[0054] Refer to Figure 3 As shown in the schematic diagram of a combined cooking device, as shown in Figure 3 As shown, the heating appliance of the combined cooking device is an induction cooker, and the cooking appliance of the combined cooking device can be a soup pot or a pressure cooker. Among them, in this embodiment, the cooking appliance is a pressure cooker and the heating appliance is an induction cooker as an example, which will not be elaborated hereinafter.

[0055] In addition, a wireless receiving device and a wireless transmitting device are respectively installed on the pressure cooker and the induction cooker. Some anti-fooling structures can also be set in the combined cooking device. Anti-fooling is a means of preventive correction behavior constraint, which uses a limiting method to avoid errors, so that the operator can directly and correctly complete the correct operation without spending attention, experience or professional knowledge.

[0056] The wireless receiving device and the wireless transmitting device can be collectively referred to as a wireless power supply device. Refer to the circuit block diagram of a wireless power supply device shown in Figure 4 As shown, the wireless power supply device may include: a wireless transmitting device, a wireless receiving device, a voltage stabilizing module, a voltage sampling module, a carrier module, an RX (Receive) control unit, a temperature sensor, a pressure switch, etc.

[0057] Among them, the wireless transmitting device is installed inside the induction cooker body, and the wireless receiving device is installed inside the pressure cooker body. The detection unit is connected to the temperature sensor, the pressure switch, the voltage sampling module, and the carrier module.

[0058] As shown in Figure 4 As shown, the temperature value inside the pressure cooker can be obtained through the temperature sensor, and whether the pressure rises inside the pot can be obtained through the pressure switch. The RX control unit obtains the received voltage value through the voltage sampling module. The receiving device sends the obtained temperature, pressure information, and received voltage value information to the wireless transmitting device by means of a carrier wave, and the control unit performs relevant control through the obtained information.

[0059] As shown in Figure 4As shown, the RX control unit can collect the first voltage in the following manner: collect the second voltage of the wireless receiving device through the voltage sampling module; wherein, the second voltage is the voltage after the first voltage is divided by the first resistor and the second resistor; determine the first voltage based on the second voltage, the first resistor, and the second resistor.

[0060] As Figure 4 shown, the first resistor can be R1, and the second resistor can be R2. Since the voltage value of the first voltage is relatively high, it can be divided by R1 and R2. The RX control unit can collect the second voltage after the first voltage is divided by R1 and R2, and calculate the first voltage based on the second voltage, R1, and R2. For example: the first voltage = the second voltage × (R1 + R2) / R1.

[0061] Step S204, determine the first distance between the cooking appliance and the heating appliance based on the first voltage.

[0062] Refer to Figure 5 the schematic diagram of the main single path of an induction cooker with a single - tube topology scheme as shown. As Figure 5 shown, the main single path of the induction cooker can include: fuse F1, rectifier bridge D1, choke coil L1, filter capacitor C1, resonance capacitor C2, resonance inductor L2 (coil disc), power transistor IGBT, main control unit U1, operation display unit U3, IGBT drive module U2, etc.

[0063] When the induction cooker works, the main control unit emits a pulse signal PPG signal (which can be 5V) with a certain width, converts the PPG signal into a DRIVE signal (which can be 18V) through the IGBT drive module, and drives the IGBT with the DRIVE signal.

[0064] Figure 5 The collector voltage of the IGBT in Figure 6 is called VC. Refer to Figure 7 the schematic diagram of the VC value and the PPG value during high - power operation and

[0065] the schematic diagram of the VC value and the PPG value during low - power operation as shown. During high - power operation, the PPG value (pulse width) is large, and at the same time, the corresponding VC value is high; during low - power operation, the PPG value is small and the VC value is low. If PPG1 > PPG2, then VC1 > VC2.

[0066] As Figure 3 shown, the first distance is Figure 3The disk spacing in it, the second spacing, i.e., the distance between the coil of the wireless transmitting device and the coil of the wireless receiving device, and the first spacing is not the same as the second spacing.

[0067] See Figure 8 As shown in the schematic diagram of the value range of the operating frequency of a wireless power supply, f0 is the resonant frequency point of the system. Due to the reliable design requirements, the operating frequency range (fmin~fmax) is greater than f0, so that the system operates in the inductive region. Therefore, under the condition of the standard spacing H, the closer the frequency is to f0, the greater the first voltage Vdd of the wireless receiving end.

[0068] See Figure 9 As shown in the schematic diagram of the relationship between the first voltage and the second spacing. Figure 9 It shows the relationship between the voltage (the first voltage) Vdd of the wireless receiving end and the coil distance (the second spacing) H under the condition of a fixed frequency f1 (f1>f0). The larger H is, the smaller the voltage Vdd of the receiving end is.

[0069] In this embodiment, the corresponding relationship between the second spacing and the first voltage at the operating frequency of each wireless transmitting device can be pre-stored. See Figure 10 As shown in the schematic diagram of the relationship between the first voltage and the second spacing at each operating frequency. Given the known operating frequency f and the measured Vdd, the value of H at the operating frequency f can be obtained through the corresponding relationship curve.

[0070] For example, the second spacing can be calculated in at least two ways: the first way is single-frequency calculation, and the second way is multi-frequency calculation. For example: determine the target operating frequency of the wireless transmitting device; determine the second spacing corresponding to the first voltage based on the corresponding relationship between the first voltage and the target operating frequency.

[0071] The target operating frequency is the single frequency. First, find the relationship curve of the target operating frequency (i.e., the corresponding relationship corresponding to the target operating frequency) from the pre-stored relationship curves. Given the first voltage, the second spacing corresponding to the first voltage can be determined from the found relationship curve.

[0072] For example, during wireless power supply, wireless transmission power supply is carried out at a fixed target operating frequency fa (fmin≤fa≤fmax) (time>1s), the Vdd value is obtained, and the H value is obtained through a preset relational expression.

[0073] Another example: adjust the operating frequency of the wireless transmitting device, record multiple adjusted operating frequencies and the first voltages corresponding to the multiple operating frequencies; determine the second spacings corresponding to the multiple first voltages based on the corresponding relationships between the multiple first voltages and the multiple operating frequencies; perform an average calculation or a weighted calculation on the second spacings corresponding to the multiple first voltages, and use the calculation result as the second spacing.

[0074] For example, during wireless power supply, wireless transmission power supply is performed at fixed frequencies fa and fb respectively (power supply time > 1 s), the values of Vdd_a and Vdd_b are obtained, and the values of H_a and H_b can be obtained respectively through the corresponding relationships corresponding to fa and fb. Then, the values of H_a and H_b can be averaged or weighted, and the calculation result is used as the second spacing H value.

[0075] Among them, the value ranges of fa and fb can be: fmin ≤ fa, fb ≤ fmax. Preferably, the value ranges of fa and fb can be: fmin ≤ fa < 1 / 2(fmin + fmax), 1 / 2(fmin + fmax) ≤ fb ≤ fmax.

[0076] After calculating the second spacing H value, the first spacing can be calculated in the following manner: determine the first positional relationship between the heating appliance and the wireless transmission device and the second positional relationship between the cooking appliance and the wireless receiving device; determine the first spacing based on the first positional relationship, the second positional relationship, and the second spacing.

[0077] Among them, since the heating appliance, the cooking appliance, the wireless transmission device, and the wireless receiving device are all fixed, the first positional relationship and the second positional relationship are also fixed and can be measured in advance. Therefore, the first spacing can be determined based on the first positional relationship, the second positional relationship, and the second spacing.

[0078] Step S206, if the first spacing is greater than a preset first threshold, send an alarm signal.

[0079] If the first spacing is greater than the preset first threshold, it can be considered that the distance of the pressure cooker is abnormal. The reasons for this situation may be that there is a foreign object under the pressure cooker or the pressure cooker is displaced. At this time, it is necessary to alarm the user, that is, send an alarm signal.

[0080] In addition, different heating powers of the heating appliance can correspond to different first thresholds. For example: obtain the heating power of the heating appliance; determine the first threshold corresponding to the heating power; if the first spacing is greater than the first threshold, send an alarm signal.

[0081] Therefore, the heating power of the heating appliance can be obtained first, then the first threshold corresponding to the heating power of the heating appliance can be determined, and then the relationship between the first spacing and the first threshold can be judged. If the first spacing is greater than the first threshold, send an alarm signal.

[0082] Step S208, if the first spacing is greater than a preset first threshold and the heating power is greater than a preset second threshold, reduce the heating power.

[0083] If the distance of the pressure cooker is abnormal and the heating power is greater than the preset second threshold, it indicates that the pressure cooker is in a high-power heating state at this time, and there is a risk that the VC value exceeds the rated value. It is necessary to reduce the heating power of the pressure cooker to prevent the IGBT from being burned. Generally, the reduced heating power can be <0.8 × the rated maximum value of the heating power.

[0084] The embodiments of the present invention provide more of the above methods, which can determine the first distance between the cooking appliance and the heating appliance based on the first voltage of the wireless receiving device, and send an alarm signal when the first distance is greater than the first threshold, and reduce the heating power of the pressure cooker when the first distance is greater than the first threshold and the pressure cooker is in high-power heating. In this way, the distance between the cooking appliance and the heating appliance can be detected, the potential safety hazard of damaging the IGBT can be prevented, the user experience can be improved, and an alarm is given when the distance of the pressure cooker is abnormal, and the heating power of the pressure cooker is reduced when the distance of the pressure cooker is abnormal and the pressure cooker is in high-power heating.

[0085] Embodiment 3:

[0086] Corresponding to the above method embodiments, the embodiments of the present invention provide a position detection device for a cooking appliance. Refer to Figure 11 the structural schematic diagram of a position detection device for a cooking appliance shown in

[0087] A first voltage acquisition module 1101, configured to acquire the first voltage of the wireless receiving device;

[0088] A first distance determination module 1102, configured to determine the first distance between the cooking appliance and the heating appliance based on the first voltage;

[0089] An alarm signal sending module 1103, configured to send an alarm signal if the first distance is greater than a preset first threshold.

[0090] The position detection device for a cooking appliance provided by the embodiments of the present invention can determine the first distance between the cooking appliance and the heating appliance based on the first voltage of the wireless receiving device, and send an alarm signal when the first distance is greater than the first threshold. In this way, the distance between the cooking appliance and the heating appliance can be detected, the potential safety hazard of damaging the IGBT can be prevented, and the user experience can be improved.

[0091] The above wireless receiving device includes a voltage sampling module, a first resistor, and a second resistor; the first voltage acquisition module is configured to acquire the second voltage of the wireless receiving device through the voltage sampling module; wherein, the second voltage is the voltage after the first voltage is divided by the first resistor and the second resistor; the first voltage is determined based on the second voltage, the first resistor, and the second resistor.

[0092] The above-mentioned first distance determination module is used to determine the second distance between the coil of the wireless transmitting device and the coil of the wireless receiving device based on the first voltage; and determine the first distance based on the second distance.

[0093] The corresponding relationship between the second distance and the first voltage at the operating frequency of each wireless transmitting device is pre-stored; the above-mentioned first distance determination module is used to determine the target operating frequency of the wireless transmitting device; and determine the second distance corresponding to the first voltage based on the corresponding relationship corresponding to the first voltage and the target operating frequency.

[0094] The above-mentioned first distance determination module is used to adjust the operating frequency of the wireless transmitting device, record the adjusted multiple operating frequencies and the first voltages corresponding to the multiple operating frequencies; determine the second distances corresponding to the multiple first voltages based on the corresponding relationship between the multiple first voltages and the multiple operating frequencies; perform an average calculation or a weighted calculation on the second distances corresponding to the multiple first voltages, and use the calculation result as the second distance.

[0095] The above-mentioned first distance determination module is used to determine the first positional relationship between the heating appliance and the wireless transmitting device and the second positional relationship between the cooking appliance and the wireless receiving device; and determine the first distance based on the first positional relationship, the second positional relationship and the second distance.

[0096] The above-mentioned alarm signal sending module is used to obtain the heating power of the heating appliance; determine the first threshold corresponding to the heating power; and send an alarm signal if the first distance is greater than the first threshold.

[0097] See Figure 12 The structural schematic diagram of the position detection device of another cooking appliance shown in the figure. The position detection device of this cooking appliance further includes: a heating power reduction module 1104, connected to the alarm signal sending module 1103. The heating power reduction module 1104 is used to reduce the heating power if the first distance is greater than the preset first threshold and the heating power is greater than the preset second threshold.

[0098] Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the position detection device of the cooking appliance described above can refer to the corresponding process in the embodiment of the position detection method of the cooking appliance described above, and will not be repeated here.

[0099] Embodiment 4:

[0100] The embodiment of the present invention also provides an electronic device for running the above-mentioned position detection method of the cooking appliance; see Figure 13Schematic diagram of the structure of an electronic device. The electronic device includes a memory 100 and a processor 101. Among them, the memory 100 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor 101 to implement the above-mentioned position detection method of the cooking appliance.

[0101] Furthermore, Figure 13 The shown electronic device further includes a bus 102 and a communication interface 103. The processor 101, the communication interface 103, and the memory 100 are connected through the bus 102.

[0102] Among them, the memory 100 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory, such as at least one disk memory. Through at least one communication interface 103 (which can be wired or wireless), a communication connection is achieved between this system network element and at least one other network element, and the Internet, wide area network, local area network, metropolitan area network, etc. can be used. The bus 102 can be an ISA bus, a PCI bus, an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity of representation, Figure 13 only a bidirectional arrow is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0103] The processor 101 may be an integrated circuit chip with the ability to process signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 101 or the instructions in the form of software. The above-mentioned processor 101 may be a general-purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; it may also be a digital signal processor (DSP for short), an application specific integrated circuit (ASIC for short), a field-programmable gate array (FPGA for short), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute each method, step, and logic block diagram disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 100, and the processor 101 reads the information in the memory 100 and combines its hardware to complete the steps of the method in the foregoing embodiments.

[0104] The embodiments of the present invention also provide a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions cause the processor to implement the above-mentioned position detection method for the cooking appliance. For the specific implementation, reference can be made to the method embodiments, and details are not described herein again.

[0105] The computer program product of the position detection method, device, and electronic device for the cooking appliance provided by the embodiments of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the foregoing method embodiments. For the specific implementation, reference can be made to the method embodiments, and details are not described herein again.

[0106] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described system and / or device can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

[0107] In addition, in the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0108] If the above-mentioned function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0109] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0110] Finally, it should be noted that the above-described embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions described in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements for some of the technical features; and these modifications, changes, or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A method for detecting the position of a cooking appliance, characterized in that, The cooking appliance is disposed above the heating appliance, and the wireless transmitting device of the heating appliance powers the wireless receiving device of the cooking appliance; the method includes: Collect a first voltage of the wireless receiving device; Determine a first distance between the cooking appliance and the heating appliance based on the first voltage; If the first distance is greater than a preset first threshold, send an alarm signal; The step of determining the first distance between the cooking appliance and the heating appliance based on the first voltage includes: determining a second distance between the coil of the wireless transmitting device and the coil of the wireless receiving device based on the first voltage; determining the first distance based on the second distance.

2. The method according to claim 1, wherein The wireless receiving device includes a voltage sampling module, a first resistor, and a second resistor; the step of collecting the first voltage of the wireless receiving device includes: Collect a second voltage of the wireless receiving device through the voltage sampling module; wherein, the second voltage is the voltage after the first voltage is divided by the first resistor and the second resistor; Determine the first voltage based on the second voltage, the first resistor, and the second resistor.

3. The method according to claim 1, wherein The corresponding relationship between the second distance and the first voltage at the operating frequency of each wireless transmitting device is pre-stored; The step of determining the second distance between the first power supply coil of the wireless transmitting device and the second power supply coil of the wireless receiving device based on the first voltage includes: Determine the target operating frequency of the wireless transmitting device; Determine the second distance corresponding to the first voltage based on the corresponding relationship corresponding to the first voltage and the target operating frequency.

4. The method according to claim 3, characterized in that, The step of determining the second distance between the first power supply coil of the wireless transmitting device and the second power supply coil of the wireless receiving device based on the first voltage includes: Adjust the operating frequency of the wireless transmitting device, and record multiple adjusted operating frequencies and the first voltages corresponding to the multiple operating frequencies; Determine the second distances corresponding to the multiple first voltages based on the corresponding relationship between the multiple first voltages and the multiple operating frequencies; Perform an average calculation or a weighted calculation on the second distances corresponding to the multiple first voltages, and use the calculation result as the second distance.

5. The method according to claim 1, wherein The step of determining the first distance based on the second distance includes: Determine a first positional relationship between the heating appliance and the wireless transmitting device and a second positional relationship between the cooking appliance and the wireless receiving device; Determine the first distance based on the first positional relationship, the second positional relationship, and the second distance.

6. The method according to claim 1, characterized in that The step of sending an alarm signal if the first distance is greater than a preset first threshold includes: Obtain the heating power of the heating appliance; Determine the first threshold corresponding to the heating power; If the first distance is greater than the first threshold, send an alarm signal.

7. The method according to claim 6, characterized in that, The method further includes: If the first distance is greater than a preset first threshold and the heating power is greater than a preset second threshold, reduce the heating power.

8. A position detection device for a cooking appliance, characterized in that, The cooking appliance is disposed above the heating appliance, and the wireless transmitting device of the heating appliance powers the wireless receiving device of the cooking appliance; the device includes: The first voltage acquisition module is used to acquire the first voltage of the wireless receiving device; The first distance determination module is used to determine the first distance between the cooking appliance and the heating appliance based on the first voltage; The alarm signal sending module is used to send an alarm signal if the first distance is greater than a preset first threshold; The first distance determination module is used to determine the second distance between the coil of the wireless transmitting device and the coil of the wireless receiving device based on the first voltage; and determine the first distance based on the second distance.

9. An electronic device, characterized in that, It includes a processor and a memory. The memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the position detection method of the cooking appliance according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are called and executed by the processor, the computer-executable instructions cause the processor to implement the position detection method of the cooking appliance according to any one of claims 1 to 7.

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