A multi-sensor coordinated water boiling method and device

Abstract

The present invention relates to the field of kettles, and specifically discloses a method and device for boiling water using multiple sensors, comprising the following steps: responding to a water boiling instruction, heating the kettle body, and synchronously or after a delay of a second preset time, starting to measure the temperature value and vibration value of the kettle body; detecting in real time whether the temperature value is greater than or equal to the boiling point record value, and if so, stopping heating the kettle body; otherwise, judging whether the temperature value and vibration value meet condition one; if so, delaying the first preset time from the moment when condition one is first met, taking the corresponding temperature value as the new boiling point record value, and after obtaining the new boiling point record value, stopping heating the kettle body; otherwise, repeating this step. The present invention judges whether the water in the kettle is about to boil by mutually verifying the readings of the temperature sensor and the vibration sensor, and updates the boiling point temperature value and vibration value judgment conditions through mutual verification, making the boiling point judgment of the kettle more accurate and automatically adapting to the boiling point at different altitudes.

Description

Technical Field

[0001] The present invention relates to the field of kettles, and in particular to a multi-sensor coordinated water boiling method and equipment. Background Art

[0002] The electric kettle is one of the more common modern household appliances. With the continuous segmentation of kettle usage scenarios and the continuous optimization and innovation of functions, more and more types of electric kettles are constantly appearing on the market. Especially in recent years, with the development of Internet of Things technology and smart homes, traditional water boiling methods have gradually been replaced by intelligent and automated devices. Split electric kettles, as the most common type of electric kettle, are mainly divided into two categories. One type has only a power supply interface on the base, and the heating component and electronic control components are integrated into the kettle body. Due to the aesthetic and lightweight design requirements of the kettle body, such as glass or ceramic kettle bodies, it is difficult to integrate the heating and electronic control components. Therefore, it is necessary to integrate the heating and electronic control functions into the base, similar to a small ceramic stove or induction cooker, and the kettle body is heated by the base to boil water.

[0003] However, for electric kettles that utilize integrated heating and electronic control functions in their bases to heat the kettle body, accurately measuring the water temperature inside the kettle presents a challenge. Existing solutions generally employ temperature sensors, such as thermistors, located near the base's heating element to indirectly determine the progress of the water heating, thereby shutting down the heating circuit once the water boils. However, temperature sensors have numerous limitations. Thermistors, located near the base's heating element, can only directly measure the temperature of the heating element or the bottom of the kettle body, but not the water temperature inside the kettle itself, resulting in a certain degree of hysteresis. Due to the thermal conductivity of the kettle body and varying water levels, the water temperature inside the kettle can differ significantly from the temperature actually measured by the sensor. This can easily lead to inaccurate water temperature predictions. This can often cause the water to continue heating for a period of time after boiling, causing it to overboil and overflow from the kettle body, or for the base to automatically stop heating due to overheating before the water has fully boiled. Furthermore, when electric kettles are used at different altitudes (in environments with varying atmospheric pressures), the temperature threshold measured by the temperature sensor is difficult to adjust based on the boiling point of the water, making it difficult to directly adapt and promote electric kettles in high-altitude areas. Summary of the Invention

[0004] In order to overcome the problems of inaccurate water temperature measurement and boiling point determination in existing base-heating split electric kettles, the present invention provides a water boiling method and device using multiple sensors.

[0005] The present invention provides a multi-sensor coordinated water boiling method, which is applied to a kettle body and includes the following steps:

[0006] In response to the water boiling instruction, the kettle body is heated, and after synchronously or delaying for a second preset time, the temperature value T1 and the vibration value Z1 of the kettle body are measured;

[0007] Real-time detection of whether the temperature value T1 is greater than or equal to the boiling point record value; if so, stopping heating the kettle body; otherwise, determining whether the temperature value T1 and the vibration value Z1 meet condition one; if so, delaying a first preset time from the moment when condition one is first met, taking the corresponding temperature value T1 as a new boiling point record value, and stopping heating the kettle body after obtaining the new boiling point record value; otherwise, repeating this step;

[0008] Wherein, the first preset time and the second preset time are both preset time values; Boiling point record value table The boiling point temperature value of the water recorded when the kettle was boiled last time. The boiling point recorded value before heating water is the initial preset value;

[0009] The first condition is specifically: the first temperature value < temperature value a < temperature value b, and at the same time, the second temperature value < temperature value T1;

[0010] Among them, the first temperature value and the second temperature value are both preset fixed temperature values; the temperature value a represents the temperature value T1 at the time when the maximum vibration value occurs; the maximum vibration value represents the maximum value of all vibration values ​​Z1 up to the current time; the temperature value b represents the temperature value T1 at the time when the vibration value Z1 is less than the vibration lower limit threshold for the first time after the maximum vibration value occurs; the vibration lower limit threshold is a preset vibration value.

[0011] Preferably, the step of determining whether the temperature value T1 and the vibration value Z1 meet the first condition specifically includes the following steps:

[0012] S23, detecting whether the temperature value T1 is less than the first temperature value; if so, determining that the temperature value T1 and the vibration value Z1 do not meet condition 1, and ending the determination; otherwise, executing step S24;

[0013] S24. Determine whether the vibration value Z1 is greater than the vibration value Z2. If so, assign the current vibration value Z1 to the vibration value Z2, and determine if the temperature value T1 and the vibration value Z1 do not meet condition 1, ending the determination. Otherwise, proceed to step S25. The vibration value Z2 is a variable that is reset to the vibration lower limit threshold each time a water-boil instruction is responded to.

[0014] S25, determine whether the vibration value Z1 is less than the vibration lower limit threshold; if so, execute step S26; if not, determine that the temperature value T1 and the vibration value Z1 do not meet condition 1, and end the determination;

[0015] S26 , determining whether the temperature value T1 is greater than the second temperature value; if so, determining whether the temperature value T1 and the vibration value Z1 satisfy condition one; otherwise, determining whether the temperature value T1 and the vibration value Z1 do not satisfy condition one.

[0016] Preferably, a vibration sensor is provided on the outside of the kettle body, and a signal amplification circuit is provided on one side of the vibration sensor.

[0017] The step of measuring the temperature value T1 and the vibration value Z1 of the kettle body includes the following steps:

[0018] The vibration sensor signal amplified by the signal amplification circuit is filtered and analog-to-digital converted using a low-pass filtering algorithm to obtain a vibration value Z1.

[0019] Preferably, a heating component, a bottom NTC and an infrared temperature sensor are provided on the outside of the kettle body; the heating component is provided at the bottom of the kettle body, the bottom NTC is in close contact with the bottom of the kettle body, and the infrared temperature sensor is facing the bottom of the kettle body;

[0020] The step of measuring the temperature value T1 and the vibration value Z1 of the kettle body includes the following steps:

[0021] The temperature value T2 is obtained through the NTC at the bottom of the pot, and the temperature value T3 is obtained through the infrared temperature sensor;

[0022] The average value of the current temperature value T2 and the temperature value T3 is output as the current temperature value T1.

[0023] Preferably, a hot plate NTC is provided on the outer surface of the heating component;

[0024] The step of measuring the temperature value T1 and the vibration value Z1 of the kettle body includes the following steps:

[0025] Obtain temperature value T4 through hot plate NTC;

[0026] When it is detected that the difference between the temperature value T4 and the temperature value T1 is greater than 10° C., an alarm signal is issued and the heating of the kettle body is stopped.

[0027] Preferably, the initial preset value is 100°C, the vibration lower limit threshold is 200, the first time is 30s, the second preset time is 2s, the first temperature value is 60°C, and the second temperature value is 90°C.

[0028] The present invention also provides a multi-sensor water boiling device, comprising: a kettle body for holding water, and a heating assembly, a control circuit, a temperature sensor, and a vibration sensor respectively arranged at the bottom of the kettle body, wherein the bottom of the kettle body abuts against the upper surface of the heating assembly;

[0029] The heating component, temperature sensor and vibration sensor are electrically connected to the control circuit respectively, and the control circuit executes the above-mentioned multi-sensor coordinated water boiling method after power-on.

[0030] Preferably, the device comprises a base, wherein the control circuit, the temperature sensor and the vibration sensor are all arranged in the base, and the heating component is arranged on the upper surface of the base;

[0031] The kettle body and the base are designed to be detachable, and the bottom surface of the kettle body is placed on the upper surface of the heating component.

[0032] Preferably, the vibration sensor is a buzzer, and a signal amplifying circuit is provided on one side of the buzzer, and the signal amplifying circuit is electrically connected to the control circuit.

[0033] Preferably, the temperature sensor includes a kettle bottom NTC, an infrared temperature sensor and a hot plate NTC; the kettle bottom NTC is close to the bottom of the kettle body, the infrared temperature sensor faces the bottom of the kettle body, and the hot plate NTC is close to the outer surface of the heating component.

[0034] The beneficial effects of the present invention are:

[0035] The readings of the temperature sensor and the vibration sensor are mutually verified to determine whether the water in the kettle is about to boil, and the boiling point temperature value and vibration value judgment conditions are updated through mutual verification, making the boiling point judgment of the kettle more accurate and automatically adapting to different boiling point temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below with reference to the accompanying drawings, in which:

[0037] Figure 1 This is a flow chart of the method of embodiment 2 of the present invention;

[0038] Figure 2 This is a structural diagram of embodiment 3 of the present invention;

[0039] Figure 3 This is an exploded view of the base structure of Example 3 of the present invention;

[0040] Figure 4 This is the sensor parameter-time curve of Example 3 of the present invention.

[0041] In the figure: 1. Kettle body; 2. Base; 3. Control circuit; 4. Vibration sensor; 5. NTC on the bottom of the kettle; 6. Infrared temperature sensor; 7. NTC on the hot plate; 8. Heating component; 9. Hot plate bracket. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] First of all, the working principle of this scheme is based on the curve characteristics of water sound changing with temperature. The specific principle is as follows:

[0044] One is that when water is heated to boiling, the convection at the bottom of the water gradually increases to a peak and then gradually weakens. Especially in a kettle, the strong convection of the water will produce noise, and the intensity of the noise is proportional to the intensity of the convection.

[0045] Secondly, during the heating process, water vaporizes at the bottom of the water that contacts the heating surface, generating bubbles. When these bubbles rise to the surface and burst, they vibrate, emitting a pattern of sound waves. The frequency and intensity of these sound waves are correlated with the water temperature and the heating power.

[0046] The combined effect of the two causes the noise peak during water heating to occur at a water temperature of 75°C. The temperature range with the loudest noise is 60℃-90℃. For the specific measured waveform, please refer to Figure 4 (The horizontal axis is time, in seconds; the vertical axis is the readings of vibration sensor 4 and temperature sensor, respectively.) This is a curve showing the characteristics of the water noise as it changes with temperature during the boiling process. Furthermore, even under the influence of atmospheric pressure fluctuations in the kettle's operating environment, the temperature value corresponding to this peak value fluctuates minimally. Therefore, the vibration intensity (noise loudness) of the water during the boiling process can be detected by vibration sensor 4 to determine the heating process of the water.

[0047] However, existing water-boiling devices generally use only a vibration sensor 4 or a temperature sensor to determine the heating process of the water body. Both sensors have certain unavoidable drawbacks, such as hysteresis in temperature measurement, susceptibility to interference from external vibrations, boiling point changes caused by changes in air pressure, and sensor sensitivity attenuation. Therefore, this embodiment uses both a vibration sensor 4 and a temperature sensor to monitor the water-boiling process of the electric kettle, thereby more accurately determining the boiling point and avoiding the problem of inaccurate water temperature measurement leading to delayed or premature heating shutdown, which in turn causes the water to not boil completely or overboil.

[0048] The heating component 8 of this embodiment can be either an electromagnetic coil, which generates an induced current in the metal conductor at the bottom of the kettle body 1 through changes in the magnetic field, thereby generating heat, or a coil wound with electric heating wire, which directly generates heat to heat the bottom of the kettle body 1 when powered on.

[0049] The following is a first embodiment of the present invention. This embodiment discloses a method for boiling water using multiple sensors, which is applied to a kettle body 1 and includes the following steps:

[0050] A1, responding to the water boiling instruction, heating the kettle body 1, and synchronously or after a delay of a second preset time, starting to measure the temperature value T1 and the vibration value Z1 of the kettle body 1;

[0051] A2. Real-time detection of whether the temperature value T1 is greater than or equal to the boiling point record value. If so, stopping heating the kettle body 1. Otherwise, determining whether the temperature value T1 and the vibration value Z1 meet condition 1. If so, delaying a first preset time from the moment when condition 1 is first met, setting the corresponding temperature value T1 as a new boiling point record value. After obtaining the new boiling point record value, stopping heating the kettle body 1. Otherwise, repeating this step.

[0052] The first preset time and the second preset time are both preset time values; the boiling point record value represents the boiling point temperature value of the water recorded when the kettle body 1 boiled water last time, and the boiling point record value before the kettle body 1 is heated for the first time is the initial preset value;

[0053] The first condition is specifically: the first temperature value < temperature value a < temperature value b, and at the same time, the second temperature value < temperature value T1;

[0054] Among them, the first temperature value is the minimum temperature value at which the sound of water must be greater than the lower limit threshold of vibration during the preset water boiling process, and the second temperature value is a preset fixed temperature value; the temperature value a represents the temperature value T1 at the time when the maximum vibration value occurs; the maximum vibration value represents the maximum value of all vibration values ​​Z1 up to the current time; the temperature value b represents the temperature value T1 at the time when the vibration value Z1 is less than the lower limit threshold of vibration for the first time after the maximum vibration value occurs; the lower limit threshold of vibration is a preset vibration value.

[0055] The temperature value T1 and the vibration value Z1 are respectively measured and obtained by the temperature sensor and the vibration sensor 4 provided on the kettle body 1 . The temperature sensor and the vibration sensor 4 are preferably closely attached to the outer side of the bottom of the kettle body 1 .

[0056] In this embodiment, the initial preset value is 100°C, the vibration lower limit threshold is 200, the first time is 30s, the second preset time is 2s, the first temperature value is 60°C, and the second temperature value is 90°C.

[0057] The principle of setting the first temperature value is that when the kettle body 1 is in any usage scenario of this product (i.e., different air pressure environments allowed to work by this product, different water volumes in the kettle body 1, and water at different initial temperatures), based on the curve characteristics of water sound changing with temperature, the temperature value corresponding to a time node selected when the vibration value Z1 starts to rise is used to determine whether to start looking for the maximum vibration value of the vibration value Z1 in the current water boiling process. When the maximum vibration value of the vibration value Z1 is less than the first temperature value, the maximum vibration value of the vibration value Z1 is invalid; see Figure 4 The vibration value Z1 corresponding to 60°C and its subsequent change curve. When the kettle body 1 continues to heat, the vibration value Z1 rises to the maximum vibration value, and then begins to gradually fall back. At this time, by setting the second temperature value, it plays a role in preventing premature misjudgment of the boiling point due to fluctuations in the vibration value Z1 parameter or external interference. When the temperature value T1 is less than the second temperature value, even if the vibration value Z1 is less than the vibration lower limit threshold, it cannot be directly judged that the water in the kettle body 1 is about to reach the boiling point. In the absence of external interference, the second temperature value must be less than the temperature value b to achieve the effect of correcting the inaccurate prediction of the water sound by the temperature sensor through water sound.

[0058] Under normal circumstances, during a complete water boiling process, the following conditions should be met: first temperature value < temperature value a < second temperature value < temperature value b < boiling point recorded value.

[0059] Specifically, the determination of whether the temperature value T1 and the vibration value Z1 satisfy the first condition in step A2 specifically includes the following steps:

[0060] S23, detecting whether the temperature value T1 is less than the first temperature value; if so, determining that the temperature value T1 and the vibration value Z1 do not meet condition 1, and ending the determination; otherwise, executing step S24;

[0061] S24. Determine whether the vibration value Z1 is greater than the vibration value Z2. If so, assign the current vibration value Z1 to the vibration value Z2, and determine if the temperature value T1 and the vibration value Z1 do not meet condition 1, ending the determination. Otherwise, proceed to step S25. The vibration value Z2 is a variable that is reset to the vibration lower limit threshold each time a water-boil instruction is responded to.

[0062] S25, determine whether the vibration value Z1 is less than the vibration lower limit threshold; if so, execute step S26; if not, determine that the temperature value T1 and the vibration value Z1 do not meet condition 1, and end the determination;

[0063] S26 , determining whether the temperature value T1 is greater than the second temperature value; if so, determining whether the temperature value T1 and the vibration value Z1 satisfy condition one; otherwise, determining whether the temperature value T1 and the vibration value Z1 do not satisfy condition one.

[0064] The present invention determines whether the water in the kettle is boiling or about to reach the boiling point by mutually verifying the readings of the temperature sensor and the vibration sensor 4, and updates the boiling point temperature value and vibration value judgment conditions through mutual verification, making the boiling point judgment of the kettle more accurate and automatically adapting to different boiling point temperatures.

[0065] See also Figure 1 , which is the second embodiment of the present invention and is a more specific embodiment of the first embodiment, discloses a method for boiling water with multiple sensors, including: a kettle body 1 for holding water, and a heating component 8, a temperature sensor and a vibration sensor 4 respectively arranged at the bottom of the kettle body 1.

[0066] The multi-sensor coordinated water boiling method of this embodiment specifically includes the following steps:

[0067] S1, heating, in response to the water boiling instruction, the kettle body 1 is heated by the heating component 8, and the temperature value T1 of the kettle body 1 is measured by the temperature sensor, and the vibration value Z1 of the kettle body 1 is measured by the vibration sensor 4;

[0068] S21, first judgment, judging whether the temperature value T1 is less than the boiling point record value, if so, executing step S22, otherwise, stopping heating the kettle body 1 and ending the water boiling process;

[0069] S22, resetting the maximum value, assigning the lower vibration threshold to the vibration value Z2; wherein the vibration value Z2 is a variable used to record the maximum vibration value;

[0070] S23, second judgment, detecting whether the temperature value T1 is less than the first temperature value; if so, returning to step S1; otherwise, executing step S24;

[0071] S24, third judgment, judging whether the vibration value Z1 is greater than the vibration value Z2; if so, assigning the current vibration value Z1 to the vibration value Z2 and returning to step S23; otherwise, executing step S25;

[0072] S25, fourth determination, determining whether the vibration value Z1 is less than the vibration lower limit threshold; if so, executing step S26; if not, returning to step S24;

[0073] S26, fifth judgment, judging whether the temperature value T1 is greater than the second temperature value, if so, executing S3; otherwise, returning to step S24;

[0074] S3, end, then after delaying the first preset time from the current moment, the corresponding temperature value T1 is used as a new boiling point record value, and after obtaining the new boiling point record value, the heating of the kettle body 1 is stopped.

[0075] Step S21 is used to execute the subsequent judgment only when the temperature is lower than the boiling point record value, otherwise the heating is terminated directly.

[0076] In step S22, the vibration value Z2 is used to record the maximum value of the vibration value. Each time the water starts to boil, the vibration value Z2 is reset to the lower limit threshold of the vibration. The vibration value Z2 is used to record the maximum value of the vibration value Z1 each time the water is boiled. This can provide a more accurate basis for judging the boiling point heating time during intelligent water boiling detection.

[0077] Step S23 is used to limit the subsequent determination to be performed only when the temperature value T1 is greater than or equal to 60°C.

[0078] Step S24 is used to find and record the maximum value of the vibration value Z1, and only when the vibration value Z1 exceeds the maximum value and starts to decrease, the subsequent judgment is performed.

[0079] Step S25 is used to determine that the vibration value Z1 gradually decreases to the vibration lower limit threshold, and then perform subsequent judgments.

[0080] Step S26 is used to ensure that the judgment of step S25 is valid only when the temperature of the kettle body 1 is above 90°C, so as to avoid external vibration interference causing the boiling point judgment of the above step to fail. Among them, the judgment logic order of step S25 and step S26 can be interchanged, and can also be used as program steps for simultaneous judgment.

[0081] The initial value of the boiling point record value in this embodiment is 100°C, which is a factory setting. During the subsequent water boiling process, as step S3 is executed, the boiling point record value is continuously updated, so that the kettle can automatically adapt to the deviation caused by the use environment and the changes in the temperature sensor reading when the water in the kettle body 1 boils.

[0082] The vibration lower limit threshold in this embodiment is 200, which is used as the lower limit parameter for judging the water sound vibration value to increase the robustness of the system. When the water in the kettle body 1 boils, the vibration value Z1 should be less than the vibration lower limit threshold.

[0083] In this embodiment, the first time is 30 seconds. This delay is used to ensure that the water is fully boiled. In some embodiments, the first time can also be set to 0 seconds. In short, according to the capacity of the kettle body 1 and the power of the heating component 8, the first time can be adaptively increased or decreased to ensure that the water can fully boil without over-boiling and wasting electricity or overflowing the kettle body 1.

[0084] This embodiment also discloses a multi-sensor water boiling device, comprising: a kettle body 1 for holding water, and a heating assembly 8, a control circuit 3, a temperature sensor, and a vibration sensor 4, respectively provided at the bottom of the kettle body 1, wherein the bottom of the kettle body 1 abuts against the upper surface of the heating assembly 8;

[0085] The heating component 8, the temperature sensor and the vibration sensor 4 are electrically connected to the control circuit 3 respectively. After being powered on, the control circuit 3 executes the above-mentioned multi-sensor coordinated water boiling method.

[0086] See also Figure 2 and Figure 3 As the third embodiment of the present invention, this embodiment differs from the second embodiment in that it further includes a base 2, the control circuit 3, the temperature sensor and the vibration sensor 4 are all arranged in the base 2, and the heating component 8 is arranged on the upper surface of the base 2;

[0087] The kettle body 1 and the base 2 are designed to be detachable, and the bottom surface of the kettle body 1 is placed on the upper surface of the heating component 8.

[0088] The temperature sensor includes a kettle bottom NTC5, an infrared temperature sensor 6 and a hot plate NTC7; the kettle bottom NTC5 is close to the bottom of the kettle body 1, the infrared temperature sensor 6 is facing the center of the bottom of the kettle body 1, and the hot plate NTC7 is close to the outer surface of the heating component 8.

[0089] In step S1, the temperature value T1 at the bottom of the kettle body 1 is detected by a temperature sensor, which specifically includes the following steps:

[0090] S11, obtain the temperature value T2 through the pot bottom NTC5, obtain the temperature value T3 through the infrared temperature sensor 6, and obtain the temperature value T4 through the hot plate NTC7;

[0091] S12, outputting the average value of the current T2 and T3 as the current temperature value T1;

[0092] S13 , when it is detected that the difference between T4 and the temperature value T1 is greater than 10° C., an alarm signal is issued and the power supply of the heating component 8 is disconnected.

[0093] By using multiple temperature sensors of different types and in different installation positions to verify each other, on the one hand, the temperature measurement value is made more accurate, and on the other hand, it can be detected whether there is a problem with the heat conduction between the heating component 8 and the bottom of the kettle body 1. For example, if the temperature changes rapidly and the temperature difference between the heating component 8 and the bottom of the kettle body 1 is too large, it means that there is a problem with the heat conduction between the bottom of the kettle body 1 and the heating component 8, or when the kettle body 1 is picked up, heating is stopped immediately to prevent the heating component 8 from burning out.

[0094] The vibration sensor 4 is a piezoelectric ceramic buzzer. A signal amplifying circuit is provided on one side of the buzzer. The signal amplifying circuit is electrically connected to the control circuit 3 .

[0095] The control circuit 3 uses a low-pass filtering algorithm to filter and convert the buzzer signal amplified by the signal amplifier circuit to obtain a vibration value Z1. The buzzer is located on one side of the bottom of the kettle body 1, and the outer surface of the buzzer is equipped with a seismic and soundproof structure to reduce the interference of external noise on the water sound collection.

[0096] The base 2 of this embodiment further includes a shell and a hot plate bracket 9 disposed inside the shell for fixing and supporting the heating component 8, and a buzzer is attached to one side of the inner portion of the shell.

[0097] It should be noted that the embodiments of the devices and apparatuses described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the embodiments, and those skilled in the art can understand and implement them without inventive effort.

Claims

1. A multi-sensor coordinated water boiling method, applied to a kettle, characterized in that: The steps are as follows: In response to the water boiling instruction, the kettle body is heated, and after synchronously or delaying for a second preset time, the temperature value T1 and the vibration value Z1 of the kettle body are measured; Real-time detection of whether the temperature value T1 is greater than or equal to the boiling point record value, if so, stopping heating the kettle body; Otherwise, determine whether the temperature value T1 and the vibration value Z1 meet condition 1; If yes, then after a first preset time delay from the moment when condition 1 is first satisfied, the corresponding temperature value T1 is used as a new boiling point record value, and after obtaining the new boiling point record value, the heating of the kettle body is stopped; otherwise, this step is repeated; The first preset time and the second preset time are both preset time values; the boiling point record value represents the boiling point temperature value of the water recorded when the kettle was last heated, and the boiling point record value before the kettle was heated for the first time is the initial preset value; The first condition is specifically: the first temperature value < temperature value a < temperature value b, and at the same time, the second temperature value < temperature value T1; Among them, the first temperature value and the second temperature value are both preset fixed temperature values; the temperature value a represents the temperature value T1 at the time when the maximum vibration value occurs; the maximum vibration value represents the maximum value of all vibration values ​​Z1 up to the current time; the temperature value b represents the temperature value T1 at the time when the vibration value Z1 is less than the vibration lower limit threshold for the first time after the maximum vibration value occurs; the vibration lower limit threshold is a preset vibration value.

2. The multi-sensor coordinated water boiling method according to claim 1, characterized in that: The determination of whether the temperature value T1 and the vibration value Z1 meet the first condition specifically includes the following steps: S23, detecting whether the temperature value T1 is less than the first temperature value; if so, determining that the temperature value T1 and the vibration value Z1 do not meet condition 1, and ending the determination; Otherwise, execute step S24; S24, determining whether the vibration value Z1 is greater than the vibration value Z2; if so, assigning the current vibration value Z1 to the vibration value Z2, and determining that the temperature value T1 and the vibration value Z1 do not satisfy condition 1, and ending the determination; Otherwise, execute step S25; wherein the vibration value Z2 is a variable that is reset to the vibration lower limit threshold each time a water boiling instruction is responded to; S25, determine whether the vibration value Z1 is less than the vibration lower limit threshold; if so, execute step S26; if not, determine that the temperature value T1 and the vibration value Z1 do not meet condition 1, and end the determination; S26 , determining whether the temperature value T1 is greater than the second temperature value; if so, determining whether the temperature value T1 and the vibration value Z1 satisfy condition one; otherwise, determining whether the temperature value T1 and the vibration value Z1 do not satisfy condition one.

3. The multi-sensor coordinated water boiling method according to claim 1, characterized in that: A vibration sensor for measuring the vibration value of the kettle body is provided on the outside of the kettle body, and a signal amplification circuit is provided on one side of the vibration sensor, and the vibration sensor is electrically connected to the signal amplification circuit; The step of measuring the temperature value T1 and the vibration value Z1 of the kettle body includes the following steps: The vibration sensor signal amplified by the signal amplification circuit is filtered and analog-to-digital converted using a low-pass filtering algorithm to obtain a vibration value Z1.

4. The multi-sensor coordinated water boiling method according to claim 1, characterized in that: The outside of the kettle body is provided with a heating component, a kettle bottom NTC and an infrared temperature sensor; the heating component is provided at the bottom of the kettle body, the kettle bottom NTC is closely attached to the bottom of the kettle body, and the infrared temperature sensor is facing the bottom of the kettle body; The step of measuring the temperature value T1 and the vibration value Z1 of the kettle body includes the following steps: The temperature value T2 is obtained through the NTC at the bottom of the pot, and the temperature value T3 is obtained through the infrared temperature sensor; The average value of the current temperature value T2 and the temperature value T3 is output as the current temperature value T1.

5. The multi-sensor coordinated water boiling method according to claim 4, characterized in that: A hot plate NTC is provided on the outer surface of the heating component; The step of measuring the temperature value T1 and the vibration value Z1 of the kettle body includes the following steps: Obtain temperature value T4 through hot plate NTC; When it is detected that the difference between the temperature value T4 and the temperature value T1 is greater than 10° C., an alarm signal is issued and the heating of the kettle body is stopped.

6. The multi-sensor coordinated water boiling method according to claim 1, characterized in that: The initial preset value is 100°C, the vibration lower limit threshold is 200, the first preset time is 30s, the second preset time is 2s, the first temperature value is 60°C, and the second temperature value is 90°C.

7. A water-boiling device with multiple sensors, characterized in that: include: a kettle body for holding water, and a heating assembly, a control circuit, a temperature sensor, and a vibration sensor respectively disposed at the bottom of the kettle body, wherein the bottom of the kettle body abuts against the upper surface of the heating assembly; The heating component, temperature sensor and vibration sensor are electrically connected to the control circuit respectively. After power-on, the control circuit executes the multi-sensor coordinated water boiling method according to any one of claims 1 to 6.

8. The multi-sensor water-boiling device according to claim 7, characterized in that: It includes a base, the control circuit, temperature sensor and vibration sensor are all arranged in the base, and the heating component is arranged on the upper surface of the base; The kettle body and the base are designed to be detachable, and the bottom surface of the kettle body is placed on the upper surface of the heating component.

9. The multi-sensor water-boiling device according to claim 7, characterized in that: The vibration sensor is a buzzer, and a signal amplifying circuit is provided on one side of the buzzer. The signal amplifying circuit is electrically connected to the control circuit.

10. The multi-sensor water-boiling device according to claim 7, characterized in that: The temperature sensor includes a kettle bottom NTC, an infrared temperature sensor and a hot plate NTC; the kettle bottom NTC is closely attached to the bottom of the kettle body, the infrared temperature sensor faces the bottom of the kettle body, and the hot plate NTC is closely attached to the outer surface of the heating component.

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