A resistance detection method and device, an atomization device and a medium

Abstract

This application discloses a resistance detection method, apparatus, atomizing device, and medium, applied to an atomizing device. The atomizing device includes at least two heating elements, which are grounded through the same common lead. It is necessary to obtain the terminal voltage of each heating element when operating individually and when operating simultaneously. Then, based on the terminal voltages of each heating element when operating individually and simultaneously, the equivalent resistance of the common lead is determined. Finally, when all heating elements are operating simultaneously, the actual resistance value of each heating element is determined based on the equivalent resistance. By detecting the terminal voltages of each heating element when operating individually and simultaneously, the equivalent resistance of the common lead can be effectively eliminated when multiple heating elements are operating simultaneously, thereby improving the accuracy of resistance detection.

Description

Technical Field

[0001] This application belongs to the field of electronic atomization technology, specifically relating to a resistance detection method, device, atomization equipment, and medium. Background Technology

[0002] In the field of electronic atomization equipment technology, products with output adjustment and temperature control modes have become the mainstream in the market. These atomization devices need to obtain the resistance value of the heating element in real time to achieve accurate power calculation and temperature control. Therefore, resistance detection accuracy is regarded as a key performance indicator of the equipment, which directly determines the product's flavor reproduction, output stability, and safety of use.

[0003] In atomizing devices with at least two heating elements that share the same common grounding lead, when multiple heating elements operate simultaneously, the additional voltage drop generated by the impedance of the common lead itself will interfere with the detection results of the heating wire resistance, causing a large detection error. Summary of the Invention

[0004] In view of the above problems, embodiments of this application are proposed to provide a resistance detection method, apparatus, atomizing device and medium that overcomes or at least partially solves the above problems.

[0005] In a first aspect, embodiments of this application provide a resistance detection method applied to an atomizing device, the atomizing device including at least two heating elements, and the at least two heating elements being grounded through the same common lead; the method includes: The terminal voltage of each heating element when it is operating individually is obtained; and the terminal voltage of each heating element when it is operating simultaneously is obtained. The equivalent resistance of the common lead is determined based on the terminal voltage of each heating element when it is operating individually and the terminal voltage of each heating element when it is operating simultaneously. When all the heating elements are working simultaneously, the deviation in the terminal voltage of each heating element is determined based on the equivalent resistance. The actual resistance value of each heating element is determined based on the terminal voltage of each heating element and the corresponding deviation.

[0006] In some embodiments, determining the equivalent resistance of the common lead based on the terminal voltage of each heating element in its individual operating state and the terminal voltage of each heating element in its simultaneous operating state includes: Determine the circuit resistance value of each heating element when it is working alone, based on the terminal voltage of each heating element when it is working alone. Determine the circuit resistance value of each heating element when it is working simultaneously based on the terminal voltage of each heating element when it is working simultaneously. The equivalent resistance of the common lead is determined based on the difference between the circuit resistance of each heating element when it is working simultaneously and the circuit resistance when it is working individually.

[0007] In some embodiments, determining the equivalent resistance of the common lead based on the difference between the loop resistance of each heating element when operating simultaneously and when operating individually includes: The average value of the difference corresponding to each heating element is determined, and the average value is used as the equivalent resistance of the common lead.

[0008] In some embodiments, determining the circuit resistance of each heating element when it operates individually based on its terminal voltage, and determining the circuit resistance of each heating element when it operates simultaneously based on its terminal voltage, includes: Obtain the power supply voltage and the resistance value of the sampling resistor connected in series with each heating element; The current flowing through each heating element is determined by dividing the difference between the power supply voltage and the terminal voltage of each heating element by the resistance value of the corresponding sampling resistor. Determine the circuit resistance of each heating element based on its terminal voltage and corresponding current.

[0009] In some embodiments, determining the circuit resistance value of each heating element based on its terminal voltage and corresponding current includes: Divide the terminal voltage of each heating element by the corresponding current to obtain the circuit resistance of each heating element.

[0010] In some embodiments, determining the deviation in the terminal voltage of each heating element based on the equivalent resistance when the heating elements operate simultaneously includes: Obtain the current flowing through each of the heating elements; The deviation in the terminal voltage of each heating element is determined based on the current of the other heating elements and the equivalent resistance.

[0011] In some embodiments, determining the actual resistance value of each heating element based on its terminal voltage and corresponding deviation includes: The actual voltage of each heating element is obtained by subtracting the corresponding deviation from the terminal voltage of each heating element. The actual resistance of each heating element is obtained by dividing the actual voltage of each heating element by the corresponding current flowing through it.

[0012] Secondly, embodiments of this application provide a resistance detection device applied to an atomizing device, the atomizing device including at least two heating elements, and the at least two heating elements being grounded through the same common lead; the device includes: A terminal voltage acquisition module is used to acquire the terminal voltage of each heating element when it is in an individual working state; and to acquire the terminal voltage when the heating elements are in a simultaneous working state. An equivalent resistance determination module is used to determine the equivalent resistance of the common lead based on the terminal voltage of each heating element when it is in an individual working state and the terminal voltage of each heating element when it is in a simultaneous working state. The deviation determination module is used to determine the deviation in the terminal voltage of each heating element based on the equivalent resistance when each heating element is working simultaneously. The actual resistance value determination module is used to determine the actual resistance value of each heating element based on the terminal voltage of each heating element and the corresponding deviation.

[0013] In some embodiments, the equivalent resistance determination module includes: The individual operation determination submodule is used to determine the loop resistance value of each heating element when it is working alone, based on the terminal voltage of each heating element when it is working alone. The simultaneous operation determination submodule is used to determine the circuit resistance value of each heating element when it is working simultaneously, based on the terminal voltage of each heating element when it is working simultaneously. The equivalent resistance determination submodule is used to determine the equivalent resistance of the common lead based on the difference between the loop resistance of each heating element when it is working simultaneously and the loop resistance when it is working individually.

[0014] In some embodiments, the equivalent resistance determination submodule includes: An equivalent resistance determination unit is used to determine the average value of the difference corresponding to each heating element, and to use the average value as the equivalent resistance of the common lead.

[0015] In some embodiments, the individual operation determination submodule and the simultaneous operation determination submodule include: The acquisition unit is used to acquire the power supply voltage and the resistance value of the sampling resistor connected in series with each heating element; The current determination unit is used to determine the current flowing through each heating element by dividing the difference between the power supply voltage and the terminal voltage of each heating element by the resistance value of the corresponding sampling resistor. The loop resistance determination unit is used to determine the loop resistance of each heating element based on the terminal voltage and corresponding current of each heating element.

[0016] In some embodiments, the loop resistance determination unit includes: The loop resistance determination subunit is used to divide the terminal voltage of each heating element by the corresponding current to obtain the loop resistance of each heating element.

[0017] In some embodiments, the deviation determination module includes: The current acquisition submodule is used to acquire the current flowing through each of the heating elements; The deviation determination submodule is used to determine the deviation in the terminal voltage of each heating element based on the current of other heating elements and the equivalent resistance.

[0018] In some embodiments, the actual resistance value determination module includes: The actual voltage determination submodule is used to subtract the corresponding deviation from the terminal voltage of each heating element to obtain the actual voltage of each heating element. The actual resistance value determination submodule is used to divide the actual voltage of each heating element by the corresponding current flowing through the heating element to obtain the actual resistance value of each heating element.

[0019] Thirdly, embodiments of this application provide an atomizing device, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the method described in the first aspect.

[0020] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0021] The resistance detection method of this application is applied to an atomizing device, which includes at least two heating elements grounded through the same common lead. The method requires acquiring the terminal voltage of each heating element when operating individually and when operating simultaneously. Then, based on the terminal voltages of each heating element operating individually and simultaneously, the equivalent resistance of the common lead is determined. Next, when all heating elements are operating simultaneously, the deviation in the terminal voltage of each heating element is determined based on the equivalent resistance. Finally, based on the terminal voltage of each heating element and the corresponding deviation, the actual resistance value of each heating element is determined. By detecting the terminal voltages of each heating element operating individually and simultaneously to determine the equivalent resistance of the common lead, the detection error caused by the voltage drop due to the impedance of the common lead itself can be effectively eliminated when multiple heating elements are operating simultaneously, thereby improving the accuracy of heating element resistance detection. Attached Figure Description

[0022] Figure 1 This is a flowchart illustrating the steps of a resistance detection method according to an embodiment of this application; Figure 2 This is a schematic diagram of the equivalent structure of a resistance detection circuit according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a resistance detection device according to an embodiment of this application. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the field of electronic atomization equipment technology, products with output adjustment and temperature control modes have become the mainstream in the market. These atomization devices need to obtain the resistance value of the heating element in real time to achieve accurate power calculation and temperature control. Therefore, resistance detection accuracy is regarded as a key performance indicator of the equipment, which directly determines the product's flavor reproduction, output stability, and safety of use.

[0025] Currently, some dual-heating-wire atomizing devices use a structure where two heating wires share a common lead. This common lead is often made of pure nickel or nickel alloy, and its resistance increases significantly with increasing temperature. In actual use, the common lead is usually made quite thin and long. When both heating wires are working at the same time, the current flowing through this lead is large, and its own impedance can easily interfere with the detection results of the heating wire resistance, resulting in a large detection error.

[0026] Existing technologies mainly employ two methods, but both have certain drawbacks or limitations: The first method modifies the heating wire structure, using independent circuit leads (not sharing a common lead). This means the two heating wires use their own circuit leads, avoiding interference from the common lead. However, in the assembly process of dual-heating-wire atomizing cores, using independent circuit leads leads to structural complexity, assembly difficulties, and low production yield. Furthermore, adding an extra lead incurs additional material costs. The second method uses a time-sharing operating mode (two heating wires working alternately). By having the two heating wires work at different times, the current from the two wires is avoided from superimposing on the common lead, thus mitigating resistance detection errors when working simultaneously. However, for products with high burst power requirements, simultaneous operation of both heating wires is crucial for achieving rapid atomization and high concentration output. The time-sharing operating mode is difficult to meet the requirements of such scenarios, limiting its applicability.

[0027] This application embodiment determines the equivalent resistance of the common lead by detecting the terminal voltage of each heating element when it is working individually and simultaneously. This can effectively eliminate the voltage drop error caused by the impedance of the common lead when multiple heating elements are working at the same time, thereby improving the resistance detection accuracy.

[0028] Reference Figure 1 The diagram illustrates a flowchart of a resistance detection method according to an embodiment of this application. The atomizing device includes at least two heating elements, and the at least two heating elements are grounded through the same common lead. Specifically, the method may include the following steps: Step 101: Obtain the terminal voltage of each heating element when it is in the individual working state; and obtain the terminal voltage when each heating element is in the simultaneous working state.

[0029] The resistance detection method of this application is applicable to atomizing devices containing at least two heating elements that are grounded through the same common lead. To clearly illustrate the technical solution of this application, the following description uses two heating elements (hereinafter referred to as the first heating element and the second heating element) as an example. However, those skilled in the art should understand that this method is also applicable to scenarios with three or more heating elements. The heating elements are used to atomize liquids to generate aerosols; exemplarily, the heating element can be a heating wire.

[0030] By acquiring the terminal voltage of each heating element in its individual operating state, the first heating element can be controlled to operate independently (while the second heating element is not operating). In this state, the voltage value across the first heating element is detected and recorded, denoted as [missing information]. Subsequently, the second heating element is controlled to operate independently (the first heating element is not operating). In this state, the voltage value across the second heating element is detected and recorded, denoted as... In stand-alone operation, the current flowing through the common lead is only the operating current of the currently operating heating element, therefore the voltage drop generated by the common lead is relatively small.

[0031] By acquiring the terminal voltages of each heating element when they are operating simultaneously, it is possible to control the first and second heating elements to operate simultaneously. In this state, the voltage value across the first heating element (denoted as...) is measured separately. The voltage value across the second heating element (denoted as ) When operating simultaneously, the current flowing through the common lead is the sum of the operating currents of the first and second heating elements. This significantly increases the voltage drop across the common lead, leading to… and It contains a large common lead voltage drop error.

[0032] Step 102: Determine the equivalent resistance of the common lead based on the terminal voltage of each heating element when it is operating individually and the terminal voltage of each heating element when it is operating simultaneously.

[0033] Based on the obtained terminal voltage of each heating element in its individual operating state (e.g. , ) and the terminal voltage in the simultaneous operating state (e.g. , The equivalent resistance of the common lead is calculated and determined. The equivalent resistance is a comprehensive impedance value used to characterize the influence of the common lead on the terminal voltage measurement under simultaneous operation. Since the difference in terminal voltage between the two operating states (alone and simultaneous operation) mainly originates from the additional voltage drop caused by the superposition of currents on the common lead, the equivalent resistance value of the common lead can be calculated by comparing and analyzing the voltage data under the two states. This equivalent resistance reflects the degree of influence of the common lead (including its material characteristics and geometric dimensions) on the detection circuit.

[0034] Step 103: When all heating elements are working simultaneously, determine the deviation in the terminal voltage of each heating element based on the equivalent resistance.

[0035] After determining the equivalent resistance of the common lead, when all heating elements operate simultaneously, the deviation in the terminal voltage of each heating element is calculated based on this equivalent resistance. This deviation refers to the additional voltage drop introduced into the measured terminal voltage of the heating element due to the equivalent resistance of the common lead and the flow of multiple superimposed currents. The deviation is related to the equivalent resistance of the common lead and the total current flowing through the common lead (or the current of other heating elements besides the current heating element). Through this step, the error component caused by the common lead in the measured terminal voltage of each heating element can be quantitatively separated.

[0036] Step 104: Determine the actual resistance value of each heating element based on the terminal voltage of each heating element and the corresponding deviation.

[0037] When all heating elements operate simultaneously, after determining the deviation in the terminal voltage of each heating element, the actual voltage of each heating element is calculated based on the terminal voltage when all heating elements are operating simultaneously. This actual voltage is the voltage truly applied across the heating element itself after eliminating the interference of the common lead voltage drop. Subsequently, based on this actual voltage and the current flowing through each heating element, the actual resistance value of each heating element is determined. This actual resistance value eliminates the measurement error caused by the common lead voltage drop and truly reflects the resistance state of the heating element itself.

[0038] By utilizing the voltage difference between the terminals of each heating element when operating individually and simultaneously, the equivalent resistance of the common lead is determined. Then, during the dynamic process of multiple heating elements operating simultaneously, the deviation caused by the common lead is extracted from the terminal voltage measurement, ultimately obtaining the actual resistance value of each heating element. This method effectively eliminates the interference of the common lead voltage drop on resistance detection, significantly improving the resistance detection accuracy in scenarios where multiple heating elements operate simultaneously.

[0039] The resistance detection method of this application is applied to an atomizing device, which includes at least two heating elements grounded through the same common lead. The method requires acquiring the terminal voltage of each heating element when operating individually and when operating simultaneously. Then, based on the terminal voltages of each heating element operating individually and simultaneously, the equivalent resistance of the common lead is determined. Next, when all heating elements are operating simultaneously, the deviation in the terminal voltage of each heating element is determined based on the equivalent resistance. Finally, based on the terminal voltage of each heating element and the corresponding deviation, the actual resistance value of each heating element is determined. By detecting the terminal voltages of each heating element operating individually and simultaneously to determine the equivalent resistance of the common lead, the voltage drop error caused by the impedance of the common lead can be effectively eliminated when multiple heating elements are operating simultaneously, thereby improving the accuracy of resistance detection.

[0040] In this embodiment, step 102, determining the equivalent resistance of the common lead based on the terminal voltage of each heating element in its individual operating state and the terminal voltage of each heating element in its simultaneous operating state, may specifically include the following sub-steps: Sub-step S11: Determine the circuit resistance value of each heating element when it is working alone, based on the terminal voltage of each heating element when it is working alone.

[0041] Sub-step S12: Determine the circuit resistance value of each heating element when it is working simultaneously, based on the terminal voltage of each heating element when it is working simultaneously.

[0042] Sub-step S13: Determine the equivalent resistance of the common lead based on the difference between the circuit resistance of each heating element when it is working simultaneously and the circuit resistance when it is working individually.

[0043] The loop resistance refers to the equivalent resistance of the entire loop from the driving terminal of the heating element to the ground terminal. This loop includes the resistance of the heating element itself and the resistance of the common lead. Since the actual resistance of the heating element itself does not change substantially between individual and simultaneous operation, while the voltage drop on the common lead changes due to the superposition of currents, the equivalent resistance of the common lead is determined by comparing the differences in loop resistance between the individual and simultaneous operation states of each heating element.

[0044] Based on the terminal voltage of each heating element in its individual operating state, determine the circuit resistance value of each heating element in that state. Taking the first heating element as an example: when the first heating element operates alone, obtain its terminal voltage measurement value. This terminal voltage is detected under known driving conditions (e.g., applying a known supply voltage). Since the driving conditions are known, and other fixed parameters in the circuit are known to the system (e.g., reference resistors), according to... Based on these known circuit parameters, the loop resistance value of the first heating element when operating alone was determined. The circuit resistance value represents the equivalent resistance of the entire circuit from the drive terminal to the ground terminal. Similarly, the circuit resistance value when the second heating element operates alone... Perform the same determination.

[0045] Based on the terminal voltage detected by each heating element when they are operating simultaneously, the loop resistance value of each heating element in that state is determined. When the first heating element and the second heating element are operating simultaneously, the measured terminal voltage value of the first heating element is obtained. Based on the same known driving conditions and circuit parameters, according to Determine the circuit resistance value when the first heating element is working simultaneously. Similarly, determine the circuit resistance value when the second heating element is operating simultaneously. It should be noted that since the driving conditions and basic circuit parameters of the system remain unchanged in both standalone and simultaneous operation states, the change in loop resistance fully reflects the additional effects caused by the superposition of current on the common lead.

[0046] The equivalent resistance of the common lead is determined based on the difference between the circuit resistance values ​​of each heating element when operating simultaneously and when operating individually. For the first heating element, its circuit resistance difference is calculated:

[0047] For the second heating element, calculate its circuit resistance difference:

[0048] The above difference and This reflects the additional equivalent resistance component introduced by the superposition of current on the common lead after switching from standalone operation to simultaneous operation. The equivalent resistance of the common lead is determined based on the difference. The actual resistance of the heating element itself can be considered essentially constant over a short period (between the two tests of standalone and simultaneous operation); however, the change in loop resistance is entirely caused by the change in current on the common lead. By calculating the difference in loop resistance between the two states, the equivalent resistance of the common lead can be separated from the entire loop.

[0049] In this embodiment, sub-step S13, which determines the equivalent resistance of the common lead based on the difference between the loop resistance of each heating element when it operates simultaneously and the loop resistance when it operates individually, may specifically include the following sub-steps: Sub-step S131: Determine the average value of the difference corresponding to each heating element, and use the average value as the equivalent resistance of the common lead.

[0050] After determining the circuit resistance difference corresponding to each heating element, the arithmetic mean of the circuit resistance difference corresponding to all heating elements is calculated. The calculated average value is determined as the equivalent resistance of the common lead. This equivalent resistance is then used in subsequent steps to calculate the deviation in the terminal voltage of each heating element, and then corrects and obtains the actual resistance value of each heating element.

[0051] For example, in an atomizing device with two heating elements, assuming that the difference in circuit resistance corresponding to the first heating element is determined to be 0.089 and the difference in circuit resistance corresponding to the first heating element is 0.085 by detection and calculation, the average value of the difference is 0.087.

[0052] The equivalent resistance of the common lead is determined by averaging the differences in the loop resistances of multiple heating elements. Compared to relying solely on the difference of a single heating element, this method suppresses measurement noise. Averaging multiple differences effectively reduces the impact of random errors or noise in a single measurement on the calculated equivalent resistance, improving the stability of the test. It also compensates for individual differences, as manufacturing tolerances or contact resistance variations in each heating element may cause individual differences to deviate from the true value. Averaging these differences balances the individual variations, making the determined equivalent resistance closer to the true equivalent impedance of the common lead. Furthermore, it improves resistance detection accuracy. A more accurate equivalent resistance value of the common lead allows for more precise calculation of the voltage deviation at the terminals of each heating element, thereby further improving the detection accuracy of the actual resistance of each heating element and ensuring the accuracy of power control and temperature regulation in the atomizing equipment.

[0053] In this embodiment, sub-step S11, determining the loop resistance of each heating element when it is working individually based on its terminal voltage, and sub-step S12, determining the loop resistance of each heating element when it is working simultaneously based on its terminal voltage, may specifically include the following sub-steps: Sub-step S21: Obtain the power supply voltage and the resistance value of the sampling resistor connected in series with each heating element.

[0054] Sub-step S22: Based on the difference between the power supply voltage and the terminal voltage of each heating element, divide by the resistance value of the corresponding sampling resistor to determine the current flowing through each heating element.

[0055] Sub-step S23: Determine the circuit resistance of each heating element based on the terminal voltage and corresponding current of each heating element.

[0056] Reference Figure 2 The diagram shows an equivalent structural schematic of a resistance detection circuit for a heating element in an atomizing device according to an embodiment of this application. The resistance detection circuit includes a power supply, denoted as... This provides power supply voltage for the first heating element and the second heating element; the first heating element branch: the first heating element With sampling resistor Series connection, where, The sampling resistor connected in series with the first heating element has a known resistance value; the second heating element branch: the second heating element With sampling resistor Series connection, where, The sampling resistor, connected in series with the second heating element, has a known resistance value; common lead: first heating element. With the second heating element Grounded through a common lead, the equivalent resistance of which is denoted as . Terminal voltage detection point: The first heating element The terminal voltage, Second heating element Terminal voltage; Current: flowing through the first heating element The actual current, For the flow through the second heating element The actual current. Figure 2 The circuit structure shown is an equivalent schematic diagram, in which It is not an actual, independent resistive element, but rather an equivalent resistance parameter used to characterize the effect of the common lead on the detection of the voltage across the circuit.

[0057] Obtain power supply The voltage value is obtained, which can be a fixed value known to the system or an actual value acquired in real time by a voltage detection circuit. Simultaneously, the resistance value of the sampling resistor connected in series with each heating element is obtained; for example, the first sampling resistor is obtained. The resistance value and the second sampling resistor The resistance values ​​of these sampling resistors are known circuit parameters in advance.

[0058] The current flowing through each heating element is calculated by dividing the difference between the supply voltage and the terminal voltage of each heating element by the resistance value of the corresponding sampling resistor. Taking the first heating element as an example... Taking standalone operation as an example: According to Ohm's law, the current flowing through the first sampling resistor... The current is Since the sampling resistor is connected in series with the heating element, this current flows through the first heating element. real current Similarly, the flow rate through the first heating element can be calculated. real current The above calculation method applies to both standalone and simultaneous operating states. Simply obtain the corresponding terminal voltage based on the different operating states. or By finding the value of , the current value under the corresponding state can be calculated.

[0059] The loop resistance refers to the equivalent resistance of the entire loop from the driving terminal of the heating element (i.e., the connection point between the heating element and the sampling resistor) to the ground terminal. This loop includes the resistance of the heating element itself and the equivalent resistance of the common lead. Based on the terminal voltage and corresponding current of each heating element, determine the circuit resistance value of each heating element in both individual and simultaneous operation states.

[0060] In this embodiment, sub-step S23, determining the loop resistance value of each heating element based on its terminal voltage and corresponding current, may specifically include the following sub-steps: In sub-step S231, the terminal voltage of each heating element is divided by the corresponding current to obtain the circuit resistance value of each heating element.

[0061] By dividing the difference between the supply voltage and the terminal voltage by the resistance value of the sampling resistor, the current value of each heating element under different operating conditions has been obtained. and According to Ohm's law, the circuit resistance is equal to the voltage across the heating element divided by the current flowing through the heating element. For example, in stand-alone operation, the first heating element... circuit resistance for:

[0062] In simultaneous operation, the first heating element circuit resistance for:

[0063] Similarly, the circuit resistance of the second heating element in its individual and simultaneous operating states can be obtained.

[0064] In this embodiment, step 103, when all heating elements are working simultaneously, determines the deviation in the terminal voltage of each heating element based on the equivalent resistance, which may specifically include the following sub-steps: Sub-step S31: Obtain the current flowing through each of the heating elements.

[0065] Sub-step S32: Determine the deviation in the terminal voltage of each heating element based on the current of the other heating elements and the equivalent resistance.

[0066] like Figure 2 As shown, when the first heating element With the second heating element When operating simultaneously, the equivalent resistance of the common lead The total current flowing through it is the sum of the two currents, that is... The total current is within the equivalent resistance of the common lead. The pressure drop generated above is: The pressure drop This will be superimposed on the terminal voltage measurements of each heating element. Taking the first heating element as an example... For example, yes The voltage drop generated by its own current on the common lead (this also exists when operating alone), and Other heating elements (i.e., the second heating element) The additional voltage drop generated by the current of the heating element on the common lead is already included when the heating element is working alone. However, when the heating element is working simultaneously, the additional voltage drop introduced by the operation of other heating elements needs to be excluded. Therefore, the deviation in this embodiment can refer to the additional voltage drop that is included in the current measurement value of the current heating element when it is working simultaneously, caused by the current generated by the operation of other heating elements flowing through the common lead. That is, the part contributed by the current of other heating elements.

[0067] When all heating elements are working simultaneously, the current flowing through each heating element can be obtained through the supply voltage. The difference between the voltage at the terminals of each heating element and the voltage at the corresponding sampling resistor can be used to calculate the actual current flowing through each heating element.

[0068] For each heating element, the current of other heating elements and the equivalent resistance of the common lead are considered. The deviation in the terminal voltage of the heating element is determined. For example, for the first heating element... The other heating elements are secondary heating elements. Deviation in the terminal voltage of the first heating element for:

[0069] For the second heating element Other heating elements are the first heating elements. The deviation in the terminal voltage of the second heating element for:

[0070] In this embodiment, step 104, determining the actual resistance value of each heating element based on its terminal voltage and corresponding deviation, may specifically include the following sub-steps: Sub-step S41: Subtract the corresponding deviation from the terminal voltage of each heating element to obtain the actual voltage of each heating element.

[0071] Sub-step S42: Divide the actual voltage of each heating element by the corresponding current flowing through the heating element to obtain the actual resistance value of each heating element.

[0072] When multiple heating elements (such as the first heating element) With the second heating element When working simultaneously, the detected terminal voltage , It is not the actual voltage drop across the resistance of the heating element itself, but rather includes the equivalent resistance of the common lead. To obtain the actual resistance of the heating element, the additional voltage drop generated by the device needs to be addressed by removing the deviation from the measured terminal voltage. For each heating element, the actual voltage is obtained by subtracting the corresponding deviation from its terminal voltage under simultaneous operation. According to Ohm's law, dividing the actual voltage by the current flowing through the heating element yields the actual resistance. This process is repeated for each heating element.

[0073] The embodiments of this application can improve the accuracy of resistance detection of heating elements, effectively eliminate the interference of common lead voltage drop on resistance detection when multiple heating elements work at the same time, eliminate measurement errors caused by common lead impedance, and achieve the above functions through software algorithms without adding extra leads or complex circuit structures, thereby achieving high-precision resistance detection at a low hardware cost.

[0074] Reference Figure 2 This illustration shows a resistance detection device according to an embodiment of this application. The atomizing device includes at least two heating elements, and the at least two heating elements are grounded through the same common lead; the device includes: The terminal voltage acquisition module 201 is used to acquire the terminal voltage of each heating element when it is in an individual working state; and to acquire the terminal voltage when each heating element is in a simultaneous working state. The equivalent resistance determination module 202 is used to determine the equivalent resistance of the common lead based on the terminal voltage of each heating element when it is in an individual working state and the terminal voltage of each heating element when it is in a simultaneous working state. The deviation determination module 203 is used to determine the deviation in the terminal voltage of each heating element based on the equivalent resistance when each heating element is working simultaneously. The actual resistance value determination module 204 is used to determine the actual resistance value of each heating element based on the terminal voltage of each heating element and the corresponding deviation.

[0075] The resistance detection device of this application embodiment includes an atomizing device comprising at least two heating elements, which are grounded through the same common lead. It is necessary to acquire the terminal voltage of each heating element when operating individually and when operating simultaneously. Then, based on the terminal voltages of each heating element operating individually and simultaneously, the equivalent resistance of the common lead is determined. Next, when all heating elements are operating simultaneously, the deviation in the terminal voltage of each heating element is determined based on the equivalent resistance. Finally, based on the terminal voltage of each heating element and the corresponding deviation, the actual resistance value of each heating element is determined. By detecting the terminal voltages of each heating element operating individually and simultaneously to determine the equivalent resistance of the common lead, the voltage drop error caused by the impedance of the common lead can be effectively eliminated when multiple heating elements are operating simultaneously, thereby improving the accuracy of resistance detection.

[0076] In this embodiment of the application, the equivalent resistance determination module includes: The individual operation determination submodule is used to determine the loop resistance value of each heating element when it is working alone, based on the terminal voltage of each heating element when it is working alone. The simultaneous operation determination submodule is used to determine the circuit resistance value of each heating element when it is working simultaneously, based on the terminal voltage of each heating element when it is working simultaneously. The equivalent resistance determination submodule is used to determine the equivalent resistance of the common lead based on the difference between the loop resistance of each heating element when it is working simultaneously and the loop resistance when it is working individually.

[0077] In this embodiment of the application, the equivalent resistance determination submodule includes: The equivalent resistance determination unit is used to determine the average value of the difference corresponding to each heating element, and the average value is used as the equivalent resistance of the common lead.

[0078] In this embodiment of the application, the individual operation determination submodule and the simultaneous operation determination submodule include: The acquisition unit is used to acquire the power supply voltage and the resistance value of the sampling resistor connected in series with each heating element; The current determination unit is used to determine the current flowing through each heating element by dividing the difference between the supply voltage and the terminal voltage of each heating element by the resistance value of the corresponding sampling resistor. The loop resistance determination unit is used to determine the loop resistance of each heating element based on the terminal voltage and corresponding current of each heating element.

[0079] In this embodiment of the application, the loop resistance determination unit includes: The loop resistance determination subunit is used to divide the terminal voltage of each heating element by the corresponding current to obtain the loop resistance of each heating element.

[0080] In this embodiment of the application, the deviation determination module includes: The current acquisition submodule is used to acquire the current flowing through each heating element; The deviation determination submodule is used to determine the deviation in the terminal voltage of each heating element based on the current and equivalent resistance of other heating elements.

[0081] In this embodiment of the application, the actual resistance value determination module includes: The actual voltage determination submodule is used to subtract the corresponding deviation from the terminal voltage of each heating element to obtain the actual voltage of each heating element. The actual resistance value determination submodule is used to divide the actual voltage of each heating element by the corresponding current flowing through the heating element to obtain the actual resistance value of each heating element.

[0082] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0083] This application also provides an atomizing device, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the various processes of the resistance detection method embodiment for the heating element of the atomizing device described above, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0084] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0085] Those skilled in the art will understand that electronic devices may also include power supplies (such as batteries) that supply power to various components. The power supply may be connected to the processor logic through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system.

[0086] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described embodiment of the resistance detection method for the heating element of the atomizing device and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0087] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0088] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described embodiment of the resistance detection method for the heating element of the atomizing device, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0089] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0090] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0091] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0092] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A resistance detection method, applied to an atomizing device, characterized in that, The atomizing device includes at least two heating elements, and the at least two heating elements are grounded through the same common lead; the method includes: The terminal voltage of each heating element when it is operating individually is obtained; and the terminal voltage of each heating element when it is operating simultaneously is obtained. The equivalent resistance of the common lead is determined based on the terminal voltage of each heating element when it is operating individually and the terminal voltage of each heating element when it is operating simultaneously. When all the heating elements are working simultaneously, the deviation in the terminal voltage of each heating element is determined based on the equivalent resistance. The actual resistance value of each heating element is determined based on the terminal voltage of each heating element and the corresponding deviation.

2. The resistance detection method according to claim 1, characterized in that, Determining the equivalent resistance of the common lead based on the terminal voltage of each heating element in its individual operating state and the terminal voltage of each heating element in its simultaneous operating state includes: Determine the circuit resistance value of each heating element when it is working alone, based on the terminal voltage of each heating element when it is working alone. Determine the circuit resistance value of each heating element when it is working simultaneously based on the terminal voltage of each heating element when it is working simultaneously. The equivalent resistance of the common lead is determined based on the difference between the circuit resistance of each heating element when it is working simultaneously and the circuit resistance when it is working individually.

3. The resistance detection method according to claim 2, characterized in that, The step of determining the equivalent resistance of the common lead based on the difference between the circuit resistance of each heating element when it operates simultaneously and when it operates individually includes: The average value of the difference corresponding to each heating element is determined, and the average value is used as the equivalent resistance of the common lead.

4. The resistance detection method according to claim 2, characterized in that, The process of determining the circuit resistance of each heating element when it is working individually, based on its terminal voltage, and determining the circuit resistance of each heating element when it is working simultaneously, includes: Obtain the power supply voltage and the resistance value of the sampling resistor connected in series with each heating element; The current flowing through each heating element is determined by dividing the difference between the power supply voltage and the terminal voltage of each heating element by the resistance value of the corresponding sampling resistor. Determine the circuit resistance of each heating element based on its terminal voltage and corresponding current.

5. The resistance detection method according to claim 4, characterized in that, The process of determining the circuit resistance value of each heating element based on its terminal voltage and corresponding current includes: Divide the terminal voltage of each heating element by the corresponding current to obtain the circuit resistance of each heating element.

6. The resistance detection method according to claim 1, characterized in that, When all the heating elements are working simultaneously, determining the deviation in the terminal voltage of each heating element based on the equivalent resistance includes: Obtain the current flowing through each of the heating elements; The deviation in the terminal voltage of each heating element is determined based on the current of the other heating elements and the equivalent resistance.

7. The resistance detection method according to claim 1, characterized in that, The step of determining the actual resistance value of each heating element based on its terminal voltage and corresponding deviation includes: The actual voltage of each heating element is obtained by subtracting the corresponding deviation from the terminal voltage of each heating element. The actual resistance of each heating element is obtained by dividing the actual voltage of each heating element by the corresponding current flowing through it.

8. A resistance detection device, applied to atomizing equipment, characterized in that, The atomizing device includes at least two heating elements, and the at least two heating elements are grounded through the same common lead; the device includes: A terminal voltage acquisition module is used to acquire the terminal voltage of each heating element when it is in an individual working state; and to acquire the terminal voltage when the heating elements are in a simultaneous working state. An equivalent resistance determination module is used to determine the equivalent resistance of the common lead based on the terminal voltage of each heating element when it is in an individual working state and the terminal voltage of each heating element when it is in a simultaneous working state. The deviation determination module is used to determine the deviation in the terminal voltage of each heating element based on the equivalent resistance when each heating element is working simultaneously. The actual resistance value determination module is used to determine the actual resistance value of each heating element based on the terminal voltage of each heating element and the corresponding deviation.

9. An atomizing device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the resistance detection method for the heating element of the atomizing device as described in any one of claims 1-7.

10. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the resistance detection method for the heating element of the atomizing device as described in any one of claims 1-7.

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