Electric ceramic stove with infrared thermopile temperature measuring device

Abstract

The invention relates to the technical field of electric ceramic cookers, and discloses an electric ceramic cooker with an infrared thermopile temperature measuring device, the electric ceramic cooker comprises a shell, the upper surface of the shell is fixedly connected with a top cover in a sleeving manner, the inner surface of the shell is fixedly connected with a heating disc, and the front end of the inner surface of the shell is fixedly connected with a processor; a processor is arranged in the shell, a control panel is fixedly connected to the upper end of the processor, a temperature control detection device is arranged on the upper surface of the top cover, a control knob is rotatably connected to the side surface of the shell, the temperature control detection device comprises a supporting frame, and an infrared temperature measurement sensor is fixedly connected to the inner surface of the supporting frame. The infrared thermopile temperature measurement sensor is adopted to collect data in real time, data analysis methods such as linear fitting and an exponential smoothing method are combined, the working state of the radiant cooker can be accurately judged, the dry burning abnormal condition can be found in time, compared with a traditional temperature control method, the precision and timeliness of dry burning prevention detection are greatly improved, and the working efficiency of the radiant cooker is improved. And the use safety of the user is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of electric ceramic stoves, in particular to an electric ceramic stove provided with an infrared thermopile temperature measuring device. Background Art

[0002] An electric ceramic stove is a kitchen appliance that uses electric current to generate heat through a resistance wire, and then transfers the heat to the pot through heat transfer to achieve the purpose of cooking. It is mainly composed of a heating plate, a microcrystalline plate, an electronic control system, a temperature control system and a stove body. The heating plate is composed of a heating sheet or heating wire in the heating part and an insulating plate. When current passes through the nickel-chromium wire in the stove plate, the nickel-chromium wire generates heat and emits infrared rays, and then cooks food through heat conduction and infrared radiation.

[0003] In the prior art, electric ceramic stoves have the functions of temperature control and heat preservation, and are provided with safety measures such as overvoltage protection, leakage protection, automatic power off due to water shortage, etc., and switches, functions, fire control and timing settings are provided on the panel.

[0004] However, in actual use, the existing all-glass health-preserving kettle electric ceramic stoves on the market can only control the heating power, time heating and choose whether to keep warm. However, real-time temperature collection and display cannot be performed during the heating process, after boiling and when keeping warm, so that the water temperature cannot be accurately controlled, and the amount of water in the kettle cannot be accurately controlled. Therefore, the kettle will be dry-burned even if there is no liquid in it. In view of this, we propose an electric ceramic stove equipped with an infrared thermopile temperature measuring device. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an electric ceramic stove equipped with an infrared thermopile temperature measuring device, which solves the problem that the existing electric ceramic stove cannot perform real-time temperature collection and display during the heating process, after boiling and when keeping warm, so that the water temperature cannot be accurately controlled and the water amount in the kettle cannot be accurately controlled.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electric ceramic stove equipped with an infrared thermopile temperature measuring device, comprising a shell, a sleeved top cover is fixedly connected to the upper surface of the shell, a heating plate is fixedly connected to the inner surface of the shell, a processor is fixedly connected to the front end of the inner surface of the shell, a control panel is fixedly connected to the upper end of the processor, a temperature control detection device is arranged on the upper surface of the top cover, and a control knob is rotatably connected to the side surface of the shell;

[0007] The temperature control detection device includes a support frame, an infrared temperature sensor is fixedly connected to the inner surface of the support frame, a water supply pipe is fixedly connected to the inner surface of the support frame, an upper piston of the support frame is connected to a water supply valve, and a spring is fixedly connected to the upper surface of the water supply valve.

[0008] Preferably, a through hole is provided at the center of the inner surface of the top cover, an arc-shaped groove is provided at the lower right end of the top cover, a through hole is provided on the right surface of the outer shell, control buttons are provided on the upper surface of the processor, the lower end of the control panel is electrically connected to the processor through a wire, and a water storage device is placed on the upper surface of the top cover.

[0009] Preferably, the support frame is configured as an L-shape as a whole, a plurality of groups of cylindrical through holes are provided on the front surface of the support frame, the lower end of the support frame is fixedly connected to the top cover, a through hole for accommodating a water supply pipe is provided inside the support frame, a cylindrical slide groove is provided on the upper part of the inner surface of the support frame, and the upper surface of the water supply valve is elastically connected to the support frame through a spring.

[0010] Preferably, the water storage device comprises a kettle, a light-transmitting plate is fixedly connected to the upper end of the outer curved surface of the kettle, a truncated cone-shaped groove-shaped water inlet is provided on the upper surface of the kettle, a plurality of groups of cylindrical grooves are provided on the upper surface of the outer shell, and a pressure sensor is fixedly connected to the upper surface of the outer shell.

[0011] A temperature control method for an electric ceramic furnace provided with an infrared thermopile temperature measuring device comprises the following steps:

[0012] S1: Power supply on / off and temperature measurement and heating data interconnection

[0013] When the electric ceramic stove receives the water-boiling work instruction, it controls the resistance wire to enter the working state in a low-power mode, and at the same time sends a work start instruction to the infrared temperature sensor, the instruction includes the current power percentage;

[0014] S2: Real-time temperature detection data acquisition

[0015] After receiving the power-on command, the internal central processor of the infrared temperature sensor module collects the ADC value of the infrared thermopile temperature sensor at a fixed frequency interval, and saves the value in a fixed-length array, and updates it in a first-in-first-out manner to ensure the real-time nature of the data;

[0016] S3: Data fitting processing

[0017] When the data in the array is filled with the number that meets the first cycle, the central processing unit performs linear fitting on the collected data in a sliding window manner to obtain the fitted slope Ks, correlation coefficient Rs, and determination coefficient R2s. According to the comparison result of the correlation coefficient R and slope K of the first cycle with the set threshold, the working state of the electric ceramic stove is judged and the corresponding operation is performed.

[0018] Preferably, in the S3 data fitting process, the working state of the electric ceramic stove is judged and corresponding operations are performed according to the comparison result of the correlation coefficient R and the slope K of the first cycle with the set threshold value, specifically:

[0019] 1. When the correlation coefficient R of the first cycle meets the requirements, but the slope K is greater than the set threshold, the first abnormal state is triggered. At this time, the infrared temperature sensor module sends abnormal state data to the electric ceramic stove controller, and the electric ceramic stove controller turns off the resistance wire heating work to complete the anti-dry burning identification;

[0020] 2. When the correlation coefficient R of the first cycle meets the requirements and the slope K is less than the set threshold, the infrared temperature sensor module sends normal state data to the ceramic stove controller, and the ceramic stove controller controls the resistance wire to work in full power state and sends the current power percentage to the infrared temperature sensor module.

[0021] Preferably, after the electric ceramic stove enters the full-power heating state, the infrared temperature sensor performs real-time detection on the data in the array. When the data is filled to meet the data amount required for the second cycle, the central processing unit intercepts and linearly fits the data in a sliding window manner to obtain the fitted slope K1, correlation coefficient R1, determination coefficient R21 and residual sum of squares SSE1.

[0022] Preferably, after the electric ceramic stove enters the full-power heating state, the central processing unit uses an exponential smoothing method to identify abnormalities in the heating process for the data in the fixed-length array.

[0023] Preferably, in the S3 data fitting process, a fitting curve is obtained by fitting multiple groups of working data, and whether the electric ceramic stove is in a dry-burning state is judged based on the comparison between the fitting curve and the threshold value. If the fitting curve exceeds the threshold value, it means that the electric ceramic stove is dry-burning and the heating rate is fast, and it is judged that the electric ceramic stove is in an abnormal working state.

[0024] Preferably, each of the multiple groups of working data includes 100 data, and the reliability of the data and the appropriateness of the selection of the fitting curve are verified through the repeatability of the fitting curves of the multiple groups of data.

[0025] Working principle: When using this device, it is necessary to power the heating plate through an external power supply device, and manually adjust the target heating temperature, heating mode and other parameters through the control knob and control panel. At the same time, place the kettle on the upper surface of the heating plate. At this time, the water supply valve will be squeezed and move toward the inside of the support frame, and squeeze the spring above to retract into the inside of the support frame. At the same time, when the kettle is about to be accurately placed above the heating plate, that is, when the water supply valve is close to the water supply port of the truncated cone-shaped groove above the kettle, the spring force will push the water supply valve out, and through the inclined contact between the two, assist the kettle to be fully placed in the center of the upper surface of the top cover. At this time, the top cover will be squeezed by the kettle and the water inside it and squeeze the pressure sensor downward. At this time, the pressure sensor will transmit the pressure data to the processor and calculate the current water level inside the kettle. At the same time, the water supply valve opens to allow the water supply pipe to transmit external water to the kettle. At the same time, the pressure sensor continues to detect the current water level inside the kettle until the specified water supply demand is reached. At this time, the water supply valve is electronically closed, the infrared temperature sensor is started and detects the temperature status of various areas inside the kettle at multiple points. At the same time, the processor performs data analysis and processing on the heating status inside the kettle based on the detection results of the infrared temperature sensor.

[0026] The present invention provides an electric ceramic stove equipped with an infrared thermopile temperature measuring device. It has the following beneficial effects:

[0027] 1. The present invention uses an infrared thermopile temperature sensor to collect data in real time, and combines data analysis methods such as linear fitting and exponential smoothing to accurately judge the working status of the electric ceramic stove and promptly discover dry burning abnormalities. Compared with traditional temperature control methods, the present invention greatly improves the accuracy and timeliness of dry burning prevention detection, and effectively ensures the safety of users.

[0028] 2. The present invention provides a pressure sensor, a water supply valve, an infrared temperature sensor, a support frame, a water supply pipe, and a spring. When the kettle is placed on the top cover, the water supply valve and the spring can be used to push the kettle to locate its position, thereby improving the temperature measurement accuracy of the infrared temperature measurement. At the same time, the pressure sensor can be used to make a preliminary judgment on the water volume inside the kettle to ensure the stability of the initial water volume in the kettle.

[0029] 3. The present invention adopts different data processing methods in different working stages. For example, in the initial stage, the working state is judged by the first cycle data, and the full-power heating stage is further monitored by combining multiple data indicators and exponential smoothing method. This staged and refined data processing strategy not only improves the accuracy of temperature control, but also can adapt to the characteristics of the electric ceramic stove under different working conditions, enhances the reliability and stability of the electric ceramic stove temperature control system, and extends the service life of the electric ceramic stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view of the present invention;

[0031] Figure 2 It is a schematic diagram of the interior of the housing of the present invention;

[0032] Figure 3 It is a schematic diagram of the support frame of the present invention;

[0033] Figure 4 It is a schematic diagram of the cross section of the upper end of the support frame of the present invention;

[0034] Figure 5 It is a schematic diagram of the water storage device of the present invention;

[0035] Figure 6 A schematic diagram of a temperature control method for an electric ceramic furnace equipped with an infrared thermopile temperature measuring device;

[0036] Figure 7 It is a schematic diagram of the data processing flow of the present invention;

[0037] Figure 8 It is a schematic diagram of the data fitting curve and the dry-firing curve of the present invention;

[0038] Fig. 9 It is a curve schematic diagram when the slope is greater than the threshold value in the present invention;

[0039] Fig.10 It is a schematic diagram of the dry burning and normal fitting curves of the present invention.

[0040] Among them, 1. top cover; 2. temperature control detection device; 3. water storage device; 4. control panel; 5. control knob; 6. processor; 7. shell; 8. pressure sensor; 9. heating plate; 201. water supply valve; 202. infrared temperature sensor; 203. support frame; 204. water supply pipe; 205. spring; 301. kettle; 302. light-transmitting plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example:

[0043] Please refer to the attached Figure 1 - Attachment Figure 5The embodiment of the present invention provides an electric ceramic stove provided with an infrared thermopile temperature measuring device, comprising a shell 7, a sleeved top cover 1 is fixedly connected to the upper surface of the shell 7, a heating plate 9 is fixedly connected to the inner surface of the shell 7, a processor 6 is fixedly connected to the front end of the inner surface of the shell 7, a control panel 4 is fixedly connected to the upper end of the processor 6, a temperature control detection device 2 is arranged on the upper surface of the top cover 1, and a control knob 5 is rotatably connected to the side surface of the shell 7;

[0044] The temperature control detection device 2 includes a support frame 203, the inner surface of the support frame 203 is fixedly connected to an infrared temperature sensor 202, the inner surface of the support frame 203 is fixedly connected to a water supply pipe 204, the upper piston of the support frame 203 is connected to a water supply valve 201, and the upper surface of the water supply valve 201 is fixedly connected to a spring 205.

[0045] A through hole is provided at the center of the inner surface of the top cover 1, so that the top of the heating plate 9 can be exposed and can contact the bottom of the kettle 301. An arc-shaped groove is provided at the lower end of the right side of the top cover 1, so that when it is installed on the upper part of the outer shell 7, there is no movement interference between it and the control knob 5. A through hole is provided on the right surface of the outer shell 7, and control buttons are provided on the upper surface of the processor 6. The lower end of the control panel 4 is electrically connected to the processor 6 through a wire, and a water storage device 3 is placed on the upper surface of the top cover 1.

[0046] The support frame 203 is configured as an L-shape as a whole. A plurality of cylindrical through holes are provided on the front surface of the support frame 203, so that the front end of the infrared temperature sensor 202 can be exposed and its position can be limited. The lower end of the support frame 203 is fixedly connected to the top cover 1. A through hole for accommodating the water supply pipe 204 is provided inside the support frame 203, so that when water needs to be poured into the kettle 301, the water source can be connected to the kettle 301 through the water supply pipe 204. A cylindrical sliding hole is provided on the upper inner surface of the support frame 203. Therefore, when the kettle 301 is placed in the water supply valve 201, the water supply valve 201 will be pushed up to accommodate the kettle 301 and move to the center of the upper surface of the top cover 1. The upper surface of the water supply valve 201 is elastically connected to the support frame 203 through a spring. Therefore, when the lower end of the water supply valve 201 is aligned with the groove at the center of the upper surface of the kettle 301, the spring 205 can push the water supply valve 201 as a whole to move downward through its own elastic force, and make the lower end of the water supply valve 201 tightly connected to the water filling port at the center of the upper surface of the kettle 301.

[0047] The water storage device 3 includes a kettle 301, and a light-transmitting plate 302 is fixedly connected to the upper end of the outer arc surface of the kettle 301. A truncated cone-shaped groove-shaped water inlet is provided on the upper surface of the kettle 301. A plurality of groups of cylindrical grooves are provided on the upper surface of the outer shell 7, so that the pressure sensor 8 can be accommodated therein and its position can be limited. A pressure sensor 8 is fixedly connected to the upper surface of the outer shell 7, and the pressure sensor 8 is electrically connected to the processor 6 via a wire, so that the acquired pressure sensing information can be transmitted to the processor 6.

[0048] Please see attached Figure 6 - Attachment Fig.10 , a temperature control method for an electric ceramic furnace provided with an infrared thermopile temperature measuring device, comprising the following steps:

[0049] S1: Power supply on / off and temperature measurement and heating data interconnection

[0050] When the electric ceramic stove receives the water-boiling work instruction, it controls the resistance wire to enter the working state in a low-power mode, and at the same time sends a work start instruction to the infrared temperature sensor, the instruction includes the current power percentage;

[0051] S2: Real-time temperature detection data acquisition

[0052] After receiving the power-on command, the internal central processor of the infrared temperature sensor module collects the ADC value of the infrared thermopile temperature sensor at a fixed frequency interval, and saves the value in a fixed-length array, and updates it in a first-in-first-out manner to ensure the real-time nature of the data;

[0053] S3: Data fitting processing

[0054] When the data in the array is filled with the number that meets the first cycle, the central processing unit performs linear fitting on the collected data in a sliding window manner to obtain the fitted slope Ks, correlation coefficient Rs, and determination coefficient R2s. According to the comparison result of the correlation coefficient R and slope K of the first cycle with the set threshold, the working state of the electric ceramic stove is judged and the corresponding operation is performed.

[0055] In the S3 data fitting process, the working state of the electric ceramic stove is judged and corresponding operations are performed according to the comparison result of the correlation coefficient R and the slope K of the first cycle with the set threshold value, which is specifically:

[0056] 1. When the correlation coefficient R of the first cycle meets the requirements, but the slope K is greater than the set threshold, the first abnormal state is triggered. At this time, the infrared temperature sensor module sends abnormal state data to the electric ceramic stove controller, and the electric ceramic stove controller turns off the resistance wire heating work to complete the anti-dry burning identification;

[0057] 2. When the correlation coefficient R of the first cycle meets the requirements and the slope K is less than the set threshold, the infrared temperature sensor module sends normal state data to the electric ceramic stove controller. The electric ceramic stove controller controls the resistance wire to work in full power state and sends the current power percentage to the infrared temperature sensor module. The established calculation formula is:

[0058] Linear fitting related formula:

[0059] Assume that the n data points collected are ( x i ,y i) ,i=1,2,…,n. First calculate the mean of x and y:

[0060]

[0061] Slope K (in K s For example, when fitting the first cycle data), the calculation formula is:

[0062]

[0063] Correlation coefficient R (in terms of R s For example), the calculation formula is:

[0064]

[0065] Coefficient of determination R 2 (R 2s For example), the calculation formula is:

[0066]

[0067] The second period data fits a similar formula:

[0068] For the second cycle data, the data points are also set to ( x j ,y j ) ,j=1,2,…,m (m is the amount of data in the second cycle).

[0069] Calculate the mean:

[0070]

[0071] The calculation formula of slope K1 is:

[0072]

[0073] The calculation formula of correlation coefficient R1 is:

[0074]

[0075] Coefficient of determination R 21 The calculation formula is:

[0076]

[0077] The calculation formula for the residual sum of squares SSE1 is:

[0078] in (b1 is the intercept of the linear fitting line, which can be obtained by Calculated)

[0079] Exponential smoothing method formula:

[0080] Let y t is the actual value at time t, F t is the predicted value (smoothed value) at time t, α is the smoothing coefficient 0<α<1 ) .

[0081] The initial prediction value F1=y1 (assuming the first data point is used as the initial prediction value).

[0082] The calculation formula for the predicted value at subsequent moments is:

[0083] F t =αy t + ( 1-α ) F t-1

[0084] By observing F t With the actual value y t The difference between t to identify abnormalities in the heating process. | y t -F t| exceeds a certain threshold, or F t The rate of change of is abnormal, etc., which can be judged as an abnormal situation.

[0085] After the electric ceramic stove enters the full-power heating state, the infrared temperature sensor detects the data in the array in real time. When the data is filled to meet the data amount required for the second cycle, the central processing unit intercepts and linearly fits the data in a sliding window manner to obtain the fitted slope K1, correlation coefficient R1, determination coefficient R21 and residual sum of squares SSE1.

[0086] After the electric ceramic stove enters the full-power heating state, the central processing unit uses the exponential smoothing method to identify abnormalities in the heating process for the data in the fixed-length array.

[0087] In the S3 data fitting process, a fitting curve is obtained by fitting multiple groups of working data. Whether the electric ceramic stove is in a dry-burning state is determined by comparing the fitting curve with the threshold. If the fitting curve exceeds the threshold, it means that the electric ceramic stove is dry-burning and the heating rate is fast. It is determined that the electric ceramic stove is in an abnormal working state. The following judgment logic is proposed for its working state:

[0088] 1. The first cycle working status judgment logic:

[0089] First abnormal state judgment: When R s Meet the requirements (assuming the requirement is R s-min ≤R s ≤R s-max ) and K s >K threshold When , the first abnormal state is triggered, which can be expressed as:

[0090]

[0091] Normal state judgment: When R s Meet the requirements ( R s-min ≤R s ≤R s-max ) And K s ≤K threshold When , it enters the normal state operation, which can be expressed as:

[0092]

[0093] Where R s-min and R s-max is the correlation coefficient R s Meet the required lower and upper limits, K threshold is the slope K s The setting threshold.

[0094] 1. Determine the dry burning state based on the fitting curve: Assume that the function of the fitting curve is y = f ( x ) , set the threshold to y threshold , when f ( x ) >y threshold When , it means that the electric ceramic stove is dry burning, which can be expressed as:

[0095] if f ( x ) >y threshold Then the electric ceramic stove is burning dry.

[0096] Each of the multiple groups of working data includes 100 data, and the reliability of the data and the appropriateness of the selection of the fitting curve are verified through the repeatability of the fitting curves of the multiple groups of data.

[0097] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric ceramic stove equipped with an infrared thermopile temperature measuring device, comprising a housing (7), characterized in that: The upper surface of the shell (7) is fixedly connected to a sleeved top cover (1), the inner surface of the shell (7) is fixedly connected to a heating plate (9), the front end of the inner surface of the shell (7) is fixedly connected to a processor (6), the upper end of the processor (6) is fixedly connected to a control panel (4), the upper surface of the top cover (1) is provided with a temperature control detection device (2), and the side surface of the shell (7) is rotatably connected to a control knob (5); The temperature control detection device (2) comprises a support frame (203), the inner surface of the support frame (203) is fixedly connected to an infrared temperature sensor (202), the inner surface of the support frame (203) is fixedly connected to a water supply pipe (204), the upper piston of the support frame (203) is connected to a water supply valve (201), and the upper surface of the water supply valve (201) is fixedly connected to a spring (205).

2. The electric ceramic stove equipped with an infrared thermopile temperature measuring device according to claim 1, characterized in that: A through hole is provided at the center of the inner surface of the top cover (1), an arc-shaped groove is provided at the lower right end of the top cover (1), a through hole is provided on the right surface of the shell (7), a control button is provided on the upper surface of the processor (6), the lower end of the control panel (4) is electrically connected to the processor (6) through a wire, and a water storage device (3) is placed on the upper surface of the top cover (1).

3. The electric ceramic stove equipped with an infrared thermopile temperature measuring device according to claim 1, characterized in that: The support frame (203) is configured as an L-shape as a whole. A plurality of groups of cylindrical through holes are provided on the front surface of the support frame (203). The lower end of the support frame (203) is fixedly connected to the top cover (1). A through hole for accommodating a water supply pipe (204) is provided inside the support frame (203). A cylindrical sliding groove is provided on the upper portion of the inner surface of the support frame (203). The upper surface of the water supply valve (201) is elastically connected to the support frame (203) via a spring.

4. The electric ceramic stove equipped with an infrared thermopile temperature measuring device according to claim 1, characterized in that: The water storage device (3) comprises a kettle (301), the outer arc surface of the kettle (301) is fixedly connected to a light-transmitting plate (302), the upper surface of the kettle (301) is provided with a truncated cone-shaped groove-shaped water inlet, the upper surface of the shell (7) is provided with a plurality of groups of cylindrical grooves, and the upper surface of the shell (7) is fixedly connected to a pressure sensor (8).

5. The temperature control method of an electric ceramic furnace equipped with an infrared thermopile temperature measuring device according to claim 1, characterized in that: The following steps are involved: S1: Power supply on / off and temperature measurement and heating data interconnection When the electric ceramic stove receives the water-boiling work instruction, it controls the resistance wire to enter the working state in a low-power mode, and at the same time sends a work start instruction to the infrared temperature sensor, the instruction includes the current power percentage; S2: Real-time temperature detection data acquisition After receiving the power-on command, the internal central processor of the infrared temperature sensor module collects the ADC value of the infrared thermopile temperature sensor at a fixed frequency interval, and saves the value in a fixed-length array, and updates it in a first-in-first-out manner to ensure the real-time nature of the data; S3: Data fitting processing When the data in the array is filled with the number that meets the first cycle, the central processing unit performs linear fitting on the collected data in a sliding window manner to obtain the fitted slope Ks, correlation coefficient Rs, and determination coefficient R2s. According to the comparison result of the correlation coefficient R and slope K of the first cycle with the set threshold, the working state of the electric ceramic stove is judged and the corresponding operation is performed.

6. A temperature control method for an electric ceramic furnace equipped with an infrared thermopile temperature measuring device according to claim 5, characterized in that: In the S3 data fitting process, the working state of the electric ceramic stove is judged and corresponding operations are performed according to the comparison result of the correlation coefficient R and the slope K of the first cycle with the set threshold value, which is specifically:

1. When the correlation coefficient R of the first cycle meets the requirements, but the slope K is greater than the set threshold, the first abnormal state is triggered. At this time, the infrared temperature sensor module sends abnormal state data to the electric ceramic stove controller, and the electric ceramic stove controller turns off the resistance wire heating work to complete the anti-dry burning identification; 2. When the correlation coefficient R of the first cycle meets the requirements and the slope K is less than the set threshold, the infrared temperature sensor module sends normal state data to the ceramic stove controller, and the ceramic stove controller controls the resistance wire to work in full power state and sends the current power percentage to the infrared temperature sensor module.

7. A temperature control method for an electric ceramic furnace equipped with an infrared thermopile temperature measuring device according to claim 5, characterized in that: After the electric ceramic stove enters the full-power heating state, the infrared temperature sensor detects the data in the array in real time. When the data is filled to meet the data amount required for the second cycle, the central processing unit intercepts and linearly fits the data in a sliding window manner to obtain the fitted slope K1, correlation coefficient R1, determination coefficient R21 and residual sum of squares SSE1.

8. The temperature control method of an electric ceramic furnace equipped with an infrared thermopile temperature measuring device according to claim 5, characterized in that: After the electric ceramic stove enters the full-power heating state, the central processing unit uses the exponential smoothing method to identify abnormalities in the heating process for the data in the fixed-length array.

9. The temperature control method of an electric ceramic furnace equipped with an infrared thermopile temperature measuring device according to claim 5, characterized in that: In the S3 data fitting process, a fitting curve is obtained by fitting multiple groups of working data, and whether the electric ceramic stove is in a dry-burning state is judged based on the comparison between the fitting curve and the threshold value. If the fitting curve exceeds the threshold value, it means that the electric ceramic stove is dry-burning and the heating rate is fast, and it is judged that the electric ceramic stove is in an abnormal working state.

10. The temperature control method of an electric ceramic furnace equipped with an infrared thermopile temperature measuring device according to claim 5, characterized in that: Each of the multiple groups of working data includes 100 data, and the reliability of the data and the appropriateness of the selection of the fitting curve are verified through the repeatability of the fitting curves of the multiple groups of data.

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