Method and device for automatically controlling baking temperature of power frequency coreless furnace and storage medium

Abstract

The invention discloses a power frequency coreless furnace baking temperature automatic control method and device and a storage medium, and the method comprises the steps: responding to a baking temperature control signal of a to-be-controlled power frequency coreless furnace, determining a target temperature region indicated by the baking temperature control signal, and obtaining a baking temperature control curve corresponding to the target temperature region, the real-time temperature value of the target temperature area is collected, and the oven temperature control curve comprises standard oven temperatures corresponding to different oven time; based on the real-time temperature value, the oven baking time corresponding to the real-time temperature value and the oven baking temperature control curve, whether the oven baking temperature of the target temperature area meets the preset condition of temperature regulation or not is judged; and if the oven temperature of the target temperature area meets the preset condition, automatically regulating and controlling the oven temperature of the target temperature area based on the oven temperature control curve.

Description

Technical Field

[0001] The present invention relates to the technical field of coreless furnace temperature control, and in particular to an automatic temperature control method, device and storage medium for a power frequency coreless furnace. Background Art

[0002] The baking and sintering process can be roughly divided into three stages: baking stage, semi-sintering stage, and complete sintering stage. The sintering structure of the furnace lining is the basis for improving its service life. In addition, the sintering temperature is different, the thickness of the sintering layer is insufficient, and the service life will be significantly reduced. The sintering speed of the furnace lining is too fast, and the moisture in the refractory material has no time to be discharged. At high temperature, H20 decomposes into H2 and O2. According to the ideal gas equation, the temperature of the gas rises rapidly, and the product of the pressure and volume of the gas will expand rapidly. The volume expands rapidly, and the gas with rapidly increasing pressure will cause large cracks in the unsintered furnace lining and peeling. In the heating process at the beginning of sintering, the expansion and contraction caused by the change in the morphology of the crystal should be slowed down. The volume expansion caused by the heating of the gas must avoid a sharp temperature change.

[0003] At present, the temperature of the industrial frequency coreless furnace is usually controlled manually. However, this temperature control method is greatly affected by human subjective factors, resulting in low control accuracy of the furnace temperature. At the same time, the coreless furnace is divided into multiple areas, and the temperature control of each area is relatively independent. Such long-term and multi-area temperature control will waste a lot of manpower and material resources, and bring great inconvenience to the operators. Summary of the invention

[0004] The present invention provides a method, device and storage medium for automatically controlling the temperature of an industrial frequency coreless furnace, which are mainly capable of improving the control accuracy of the temperature of the industrial frequency coreless furnace and saving manpower and temperature control costs.

[0005] According to a first aspect of the present invention, there is provided a method for automatically controlling the temperature of a power frequency coreless furnace, comprising:

[0006] In response to a baking furnace temperature control signal of a power frequency coreless furnace to be controlled, a target temperature zone indicated by the baking furnace temperature control signal is determined, and a baking furnace temperature control curve corresponding to the target temperature zone is obtained, and a real-time temperature value of the target temperature zone is collected, wherein the baking furnace temperature control curve contains standard baking furnace temperatures corresponding to different baking furnace times;

[0007] Based on the real-time temperature value, the oven-baking time corresponding to the real-time temperature value, and the oven-baking temperature control curve, determining whether the oven temperature in the target temperature zone meets the preset conditions for temperature control;

[0008] If the oven temperature in the target temperature zone meets the preset condition, the oven temperature in the target temperature zone is automatically regulated based on the oven temperature control curve.

[0009] Optionally, judging whether the oven temperature in the target temperature zone meets preset conditions for temperature control based on the real-time temperature value, the oven time corresponding to the real-time temperature value, and the oven temperature control curve includes:

[0010] Determining a standard oven temperature and a standard temperature control method corresponding to the oven baking time in the oven temperature control curve;

[0011] Based on the standard oven temperature and the standard temperature control method, determine the oven temperature upper limit value and the oven temperature lower limit value corresponding to the target temperature zone, and the oven temperature upper limit value and the oven temperature lower limit value constitute the oven temperature interval;

[0012] If the real-time temperature value is not within the oven temperature range, it is determined that the oven temperature in the target temperature zone meets the preset conditions for temperature control;

[0013] If the real-time temperature value is within the oven temperature range, it is determined that the oven temperature in the target temperature zone does not meet the preset conditions for temperature control, and automatic control of the oven temperature in the target temperature zone is prohibited.

[0014] Optionally, the standard temperature control mode includes: one of a hysteresis heating mode, a hysteresis cooling mode, and a hysteresis constant temperature mode;

[0015] The determining, based on the standard oven temperature and the standard temperature control method, an upper oven temperature limit value and a lower oven temperature limit value corresponding to the target temperature zone includes:

[0016] Based on the standard oven temperature and the hysteresis heating mode, determining an upper limit value and a lower limit value of the heating oven temperature corresponding to the target temperature zone;

[0017] Based on the standard oven temperature and the hysteresis refrigeration mode, determining an upper temperature limit value and a lower temperature limit value of the refrigeration oven temperature corresponding to the target temperature zone;

[0018] Based on the standard oven temperature and the hysteresis constant temperature mode, an upper limit value of the constant temperature oven temperature and a lower limit value of the constant temperature oven temperature corresponding to the target temperature zone are determined.

[0019] Optionally, automatically adjusting the oven temperature in the target temperature zone based on the oven temperature control curve includes:

[0020] In the hysteresis heating mode, if the real-time temperature value is less than the lower limit value of the heating oven temperature, a temperature increase signal of the target temperature zone is triggered. When the temperature increase signal is received, the lower limit relay is controlled to be in an on state, so as to control the heating element to perform heating operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state;

[0021] If the real-time temperature value is greater than the upper limit value of the heating oven temperature, a prohibition signal for temperature rise of the target temperature zone is triggered. When the prohibition signal for temperature rise is received, the upper limit relay is controlled to be in an off state, so as to control the heating element to stop heating the target temperature zone based on the oven temperature control curve by using the upper limit relay in the off state;

[0022] In the hysteresis cooling mode, if the real-time temperature value is less than the lower limit value of the refrigeration oven temperature, a refrigeration prohibition signal for the target temperature zone is triggered. When the refrigeration prohibition signal is received, the upper limit relay is controlled to be in an off state, so as to control the refrigeration element to stop refrigerating the target temperature zone based on the oven temperature control curve by using the upper limit relay in the off state;

[0023] If the real-time temperature value is greater than the upper limit value of the refrigeration oven temperature, a refrigeration signal for the target temperature zone is triggered. When the refrigeration signal is received, the lower limit relay is controlled to be in the on state, so as to control the refrigeration element to perform refrigeration operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state;

[0024] In the hysteresis constant temperature mode, if the real-time temperature value is less than the lower limit value of the constant temperature oven temperature, the constant temperature heating signal of the target temperature zone is triggered. When the constant temperature heating signal is received, the upper limit relay and the lower limit relay are controlled to be in the on state, so as to control the heating element to perform heating operation on the target temperature zone by using the upper limit relay and the lower limit relay in the on state based on the oven temperature control curve;

[0025] If the real-time temperature value is greater than the upper limit value of the constant temperature oven temperature, the constant temperature refrigeration signal of the target temperature zone is triggered. When the constant temperature refrigeration signal is received, the upper limit relay and the lower limit relay are controlled to be in the on state, so as to control the refrigeration element to perform cooling operation on the target temperature zone based on the oven temperature control curve by utilizing the upper limit relay and the lower limit relay in the on state.

[0026] Optionally, the controlling the heating element to heat the target temperature zone by using the lower limit relay in the total low-on state and the total high-off state based on the oven temperature control curve includes:

[0027] In the process of controlling the heating element to heat the target temperature zone by using the lower limit relay in the total low-on state and the total high-off state based on the oven temperature control curve, collecting the real-time oven temperature of the target temperature zone;

[0028] Determine the temperature difference between the real-time oven temperature and the corresponding standard oven temperature in the oven temperature control curve;

[0029] Based on the temperature difference, a duty cycle of the lower limit relay is determined, and the lower limit relay is controlled to perform a heating operation on the target temperature zone under the duty cycle.

[0030] Optionally, the obtaining a baking oven temperature control curve corresponding to the target temperature zone includes:

[0031] Determine the oven requirement information, oven property information, and material property information of the baked material of the industrial frequency coreless oven to be controlled;

[0032] Determine a demand feature vector corresponding to the oven demand information, a oven feature vector corresponding to the oven attribute information, and a material feature vector corresponding to the material attribute information;

[0033] Cross-processing the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a baking furnace cross feature vector;

[0034] Inputting the baking furnace cross characteristic vector into a preset temperature control curve prediction model to perform temperature control curve prediction, and obtaining a total baking furnace temperature control curve of the industrial frequency coreless furnace to be controlled;

[0035] Based on the target temperature zone, the total oven temperature control curve is split according to different temperature zones to obtain the oven temperature control curve corresponding to the target temperature zone.

[0036] Optionally, cross-processing the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a baking furnace cross feature vector includes:

[0037] Perform feature-level cross processing on the demand feature vector, the oven feature vector, and the material feature vector to obtain a feature cross vector;

[0038] Perform element-level cross processing on the demand feature vector, the oven feature vector, and the material feature vector to obtain an element cross vector;

[0039] Perform low-order cross processing on the demand feature vector, the oven feature vector, and the material feature vector to obtain a low-order cross vector;

[0040] The characteristic cross vector, element cross vector and low-order cross vector are transformed by using a preset transformation function to obtain a baking oven cross characteristic vector.

[0041] According to a second aspect of the present invention, there is provided a device for automatically controlling the temperature of a coreless furnace of an industrial frequency furnace, comprising:

[0042] an acquisition unit, for responding to a baking furnace temperature control signal of a power frequency coreless furnace to be controlled, determining a target temperature zone indicated by the baking furnace temperature control signal, acquiring a baking furnace temperature control curve corresponding to the target temperature zone, and collecting a real-time temperature value of the target temperature zone, wherein the baking furnace temperature control curve includes standard baking furnace temperatures corresponding to different baking furnace times;

[0043] A judgment unit, configured to judge whether the oven temperature in the target temperature zone meets a preset condition for temperature control based on the real-time temperature value, the oven time corresponding to the real-time temperature value, and the oven temperature control curve;

[0044] The control unit is used to automatically control the oven temperature of the target temperature zone based on the oven temperature control curve if the oven temperature of the target temperature zone meets the preset condition.

[0045] According to a third aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above method for automatically controlling the temperature of a coreless furnace.

[0046] According to a fourth aspect of the present invention, there is provided a computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for automatically controlling the temperature of a coreless industrial frequency furnace when executing the program.

[0047] According to a method, device and storage medium for automatic control of the baking temperature of an industrial frequency coreless furnace provided by the present invention, compared with the current method of manually controlling the baking temperature of an industrial frequency coreless furnace, the present invention determines the target temperature zone indicated by the baking temperature control signal of the industrial frequency coreless furnace to be controlled in response to the baking temperature control signal of the industrial frequency coreless furnace to be controlled, obtains the baking temperature control curve corresponding to the target temperature zone, and collects the real-time temperature value of the target temperature zone, wherein the baking temperature control curve contains standard baking temperatures corresponding to different baking times; then, based on the real-time temperature value, the baking time corresponding to the real-time temperature value, and the baking temperature control curve, it is judged whether the baking temperature of the target temperature zone meets the preset conditions for temperature control; finally, if the baking temperature of the target temperature zone meets the preset conditions, the baking temperature of the target temperature zone is automatically regulated based on the baking temperature control curve. The temperature control system thus determines in advance whether the furnace temperature in the target temperature zone meets the preset conditions for temperature control by collecting the real-time temperature value of the target temperature zone, the furnace temperature control curve, and the baking time corresponding to the real-time temperature value, and then controls the furnace temperature when the preset conditions for temperature control are met. This avoids wasting control resources by controlling the furnace temperature when the temperature conditions are not met. At the same time, the present invention realizes automatic control of the furnace temperature according to the real-time temperature value and the temperature control curve through the temperature control system, which avoids the problem of low control accuracy caused by manual control, thereby improving the control accuracy of the furnace temperature and saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0049] Figure 1 A flow chart of an automatic temperature control method for a power frequency coreless furnace provided by an embodiment of the present invention is shown;

[0050] Figure 2 A flow chart of another method for automatically controlling the temperature of a coreless furnace provided by an embodiment of the present invention is shown;

[0051] Figure 3 A schematic diagram of a temperature control curve of a baking oven provided by an embodiment of the present invention is shown;

[0052] Figure 4 The structure diagram of an automatic temperature control device for a coreless furnace provided by an embodiment of the present invention is shown;

[0053] Figure 5 A schematic diagram of the physical structure of a computer device provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0054] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0055] At present, the temperature of the industrial frequency coreless furnace is manually controlled, which results in low control accuracy of the furnace temperature. At the same time, the coreless furnace is divided into multiple areas, and the temperature control of each area is relatively independent. Such long-term and multi-area temperature control will waste a lot of manpower and material resources, and bring great inconvenience to the operators.

[0056] In order to solve the above problems, the embodiment of the present invention provides a method for automatically controlling the temperature of a coreless furnace. Figure 1 As shown, the method includes:

[0057] 101. In response to a furnace temperature control signal of a power-frequency coreless furnace to be controlled, determine a target temperature zone indicated by the furnace temperature control signal, obtain a furnace temperature control curve corresponding to the target temperature zone, and collect real-time temperature values ​​of the target temperature zone, wherein the furnace temperature control curve includes standard furnace temperatures corresponding to different furnace times.

[0058] The target temperature zone includes at least one of a preheating zone, a medium temperature zone, and a high temperature zone, and different target temperature zones correspond to different oven temperature control curves.

[0059] Specifically, the present invention can realize automatic control of the temperature of the power frequency coreless furnace to be controlled based on the temperature control system, and the temperature control system includes: temperature sensors, temperature instrument controllers and other components. Before using the temperature control system to control the temperature of the furnace, it is necessary to use the furnace curve temperature instrument controller to set the furnace temperature control curve corresponding to the temperature and duration of different stages in each target temperature zone according to the overall furnace temperature control curve of the power frequency coreless furnace to be controlled. After that, in the process of controlling the temperature of the furnace using the temperature control system, firstly use the temperature sensor to collect the real-time temperature value in the power frequency coreless furnace to be controlled under the target temperature zone in real time, and under the premise that the furnace temperature meets the temperature control conditions, use the temperature instrument controller to automatically control the furnace temperature based on the furnace temperature control curve, so that the furnace temperature is close to or even reaches the furnace temperature at the corresponding time point in the furnace temperature control curve. Thus, the temperature of the furnace is automatically controlled by the temperature control system, which can avoid the problem of low temperature control accuracy of the furnace caused by manual temperature control based on subjective experience, so that the embodiment of the present invention can improve the control accuracy of the furnace temperature and save manpower and material resources.

[0060] 102. Based on the real-time temperature value, the baking time corresponding to the real-time temperature value, and the baking temperature control curve, determine whether the baking temperature in the target temperature zone meets the preset conditions for temperature control.

[0061] For the embodiment of the present invention, the standard baking furnace temperatures corresponding to different baking furnace times are recorded in the baking furnace temperature control curve. When the baking furnace temperature control signal is received, it is first necessary to determine whether the baking furnace temperature meets the preset conditions for temperature control. If the preset conditions for temperature control are not met, it means that the baking furnace temperature meets the baking furnace demand at this time and there is no need to control the baking furnace temperature. When the baking furnace temperature meets the preset conditions for temperature control, the baking furnace temperature is controlled, thereby avoiding wasting control resources by controlling the baking furnace temperature when the furnace temperature does not need to be controlled.

[0062] 103. If the oven temperature in the target temperature zone meets the preset conditions, the oven temperature in the target temperature zone is automatically regulated based on the oven temperature control curve.

[0063] For the embodiment of the present invention, if the oven temperature of the target temperature zone meets the preset conditions of temperature control, it means that the oven temperature at this time does not meet the oven requirements, and the oven temperature needs to be regulated. Specifically, the standard oven temperature value corresponding to the oven time corresponding to the real-time temperature value can be found on the oven temperature control curve, and then the oven temperature is regulated according to the standard oven temperature value using the temperature instrument controller. Thus, the temperature control system pre-determines whether the oven temperature of the target temperature zone meets the preset conditions of temperature control by collecting the real-time temperature value of the target temperature zone, the oven temperature control curve, and the oven time corresponding to the real-time temperature value, and then regulates the oven temperature when the preset conditions of temperature control are met, thereby avoiding the waste of regulation resources caused by regulating the oven temperature when the temperature conditions are not met. At the same time, the present invention realizes automatic regulation of the oven temperature according to the real-time temperature value and the temperature control curve through the temperature control system, which can avoid the problem of low regulation accuracy caused by manual regulation, thereby improving the regulation accuracy of the oven temperature and saving manpower and material resources.

[0064] According to a method for automatically controlling the baking temperature of an industrial frequency coreless furnace provided by the present invention, compared with the current method of manually controlling the baking temperature of an industrial frequency coreless furnace, the present invention determines the target temperature zone indicated by the baking temperature control signal of the industrial frequency coreless furnace to be controlled in response to the baking temperature control signal of the industrial frequency coreless furnace to be controlled, obtains the baking temperature control curve corresponding to the target temperature zone, and collects the real-time temperature value of the target temperature zone, wherein the baking temperature control curve contains standard baking temperatures corresponding to different baking times; then, based on the real-time temperature value, the baking time corresponding to the real-time temperature value, and the baking temperature control curve, it is judged whether the baking temperature of the target temperature zone meets the preset conditions for temperature control; finally, if the baking temperature of the target temperature zone meets the preset conditions, the baking temperature of the target temperature zone is automatically regulated based on the baking temperature control curve. The temperature control system thus determines in advance whether the furnace temperature in the target temperature zone meets the preset conditions for temperature control by collecting the real-time temperature value of the target temperature zone, the furnace temperature control curve, and the baking time corresponding to the real-time temperature value, and then controls the furnace temperature when the preset conditions for temperature control are met. This avoids wasting control resources by controlling the furnace temperature when the temperature conditions are not met. At the same time, the present invention realizes automatic control of the furnace temperature according to the real-time temperature value and the temperature control curve through the temperature control system, which avoids the problem of low control accuracy caused by manual control, thereby improving the control accuracy of the furnace temperature and saving manpower and material resources.

[0065] Further, in order to better illustrate the process of controlling the oven temperature of the power frequency coreless furnace, as a refinement and extension of the above embodiment, the embodiment of the present invention provides another method for automatically controlling the oven temperature of the power frequency coreless furnace, such as Figure 2 As shown, the method includes:

[0066] 201. In response to the furnace temperature control signal of the industrial frequency coreless furnace to be controlled, determine the target temperature zone indicated by the furnace temperature control signal, obtain the furnace temperature control curve corresponding to the target temperature zone, and collect the real-time temperature value of the target temperature zone, wherein the furnace temperature control curve contains standard furnace temperatures corresponding to different furnace times.

[0067] For the embodiment of the present invention, in order to better control the furnace temperature of the industrial frequency coreless furnace, it is first necessary to determine the furnace temperature control curve corresponding to the target temperature zone. Based on this, the method includes: determining the furnace demand information, furnace attribute information, and material attribute information of the industrial frequency coreless furnace to be controlled; determining the demand feature vector corresponding to the furnace demand information, the furnace feature vector corresponding to the furnace attribute information, and the material feature vector corresponding to the material attribute information; cross-processing the demand feature vector, the furnace feature vector, and the material feature vector to obtain a furnace cross feature vector; inputting the furnace cross feature vector into a preset temperature control curve estimation model to perform temperature control curve estimation to obtain the total furnace temperature control curve of the industrial frequency coreless furnace to be controlled; based on the target temperature zone, splitting the total furnace temperature control curve according to different temperature zones to obtain the furnace temperature control curve corresponding to the target temperature zone. Among them, the method for cross-processing the demand feature vector, the baking furnace feature vector, and the material feature vector includes: performing feature-level cross-processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a feature cross-vector; performing element-level cross-processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain an element cross-vector; performing low-order cross-processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a low-order cross-vector; using a preset transformation function to transform the feature cross-vector, the element cross-vector, and the low-order cross-vector to obtain a furnace cross feature vector.

[0068] Among them, the baking furnace demand information includes material drying, heat treatment, moisture removal, etc.; the baking furnace attribute information includes the baking furnace type, baking furnace material, baking furnace size, baking process (heating rate, insulation time, cooling rate, etc.), the furnace body structure of the industrial frequency coreless furnace to be controlled, the furnace body size, the furnace body material, etc.; the material attribute information includes: thermal expansion, thermal shock resistance, hygroscopicity, etc.

[0069] For the embodiment of the present invention, in order to improve the temperature control curve estimation accuracy of the preset temperature control curve estimation model, it is first necessary to train and construct the preset temperature control curve estimation model, and the specific construction method includes: constructing multiple preset initial temperature control curve estimation models, wherein the model structures of the multiple preset initial temperature control curve estimation models may be the same or different; obtaining a sample data set, wherein the sample data set includes sample furnace demand information of a sample industrial frequency coreless furnace, sample furnace attribute information, material attribute information of a sample baked material, and the actual information of the sample industrial frequency coreless furnace corresponding to the actual furnace requirements that can be met. Oven temperature control curve; based on the number of models of the preset initial temperature control curve estimation model, the sample data set is divided into multiple training sets and multiple test sets; using each training set to train the corresponding preset initial temperature control curve estimation model to obtain the trained preset initial temperature control curve estimation model; using each test set to test the corresponding trained preset initial temperature control curve estimation model to obtain the test result; based on the test result, the initial model with the highest estimation accuracy is determined in the trained preset initial temperature control curve estimation model, and the initial model is determined as the preset temperature control curve estimation model. Therefore, the embodiment of the present invention can ensure that the estimation accuracy of the model for curve estimation is higher by training and testing multiple preset initial temperature control curve estimation models. Thereby, the control accuracy of the oven temperature can be further improved.

[0070] Specifically, in the process of controlling the temperature of the baking furnace, the baking furnace demand information, baking furnace attribute information, material attribute information of the baked material and other information of the industrial frequency coreless furnace to be controlled are first collected, and then the demand feature vector corresponding to the baking furnace demand information, the baking furnace feature vector corresponding to the baking furnace attribute information, and the material feature vector corresponding to the material attribute information are determined by word embedding and other methods. In practical applications, the baking furnace demand information, baking furnace attribute information, and material attribute information of the baked material belong to data of different dimensions and need to be processed into data of the same latitude, that is, to process them into demand feature vectors, baking furnace feature vectors, and material feature vectors. Then, in order to extract more implicit features, it is necessary to cross-process the above vectors. If the demand feature vector is (a1, a2, a3), the oven feature vector is (b1, b2, b3), and the material feature vector is (c1, c2, c3), the specific cross-processing process includes: first, multiply the elements at the same position in the demand feature vector, the oven feature vector, and the material feature vector to obtain a comprehensive feature vector, and perform a convolution transformation on the comprehensive feature vector under a preset weight w (set according to actual needs) to obtain a feature cross-vector f(w*(a1*b1*c1, a2*b2* c2,a3*b3*c3)); at the same time, perform element-level cross processing on the demand feature vector, the baking furnace feature vector, and the material feature vector, that is, first multiply the elements at the same position in the demand feature vector, the baking furnace feature vector, and the material feature vector, and then assign different preset weight values ​​w1, w2, w3 (set according to actual needs) to each product after the multiplication, and then perform linear transformation on each product after the weight is assigned, and obtain the element cross vector f(w1*a1*c1*b1,w2*a2*b2*c2,w3*a3*b3*c3 ... The characteristic vector, the baking furnace characteristic vector, and the material characteristic vector are subjected to low-order cross processing, that is, the demand characteristic vector, the baking furnace characteristic vector, and the material characteristic vector are horizontally spliced, and the splicing result is assigned a preset weight value w4 (set according to actual needs), and the low-order cross vector is obtained as f(w4(a1, a2, a3, b1, b2, b3, c1, c2, c3)). Finally, the characteristic cross vector, the element cross vector, and the low-order cross vector are transformed using a preset transformation function to obtain a baking furnace cross characteristic vector, wherein the preset transformation function can be set according to actual conditions, and this embodiment does not limit this. It should be noted that the above examples are only illustrative and do not limit the embodiments of the present application. Afterwards, the baking furnace cross characteristic vector is input into the preset temperature control curve prediction model, and the preset temperature control curve prediction model can output an accurate total baking furnace temperature control curve of the industrial frequency coreless furnace to be controlled, wherein the total baking furnace temperature control curve includes furnace curves of corresponding temperatures and durations in multiple areas such as the preheating zone, the medium temperature zone, and the high temperature zone, such as Figure 3A schematic diagram of a total oven temperature control curve is shown (the total oven temperature control curve in the schematic diagram is only schematic and does not limit the embodiments of the present application), so that according to the target temperature zone, the oven temperature control curve corresponding to the target temperature zone can be separated from the total oven temperature control curve. Thus, by cross-processing the demand feature vector, the oven feature vector, and the material feature vector, different features can be automatically or explicitly combined to generate new feature combinations. These combined features contain complex nonlinear relationships between the original features, so that the model can capture more detailed and rich information in the data, that is, it can make full use of the relationship between various data, extract more implicit features, and take into account both high-order and low-order processing, so that data utilization is more sufficient, and the oven temperature control curve prediction results obtained later are more accurate and meet the needs of actual application scenarios.

[0071] 202. Determine the standard oven temperature and standard temperature control method corresponding to the oven time in the oven temperature control curve.

[0072] Among them, the standard temperature control modes include: hysteresis heating mode, hysteresis cooling mode, hysteresis constant temperature mode, etc.

[0073] Specifically, since the standard oven temperatures corresponding to different times are recorded in the oven temperature control curve, the standard oven temperature corresponding to the time can be determined in the oven temperature control curve based on the oven baking time corresponding to the real-time temperature value. At the same time, the standard temperature control mode corresponding to the time can also be determined through the oven temperature control curve. For example, if the temperature control curve corresponding to the time is an upward trend, then the corresponding standard temperature control mode is determined to be the hysteresis heating mode. If the temperature control curve corresponding to the time is a downward trend, then the corresponding standard temperature control mode is determined to be the hysteresis cooling mode. If the temperature control curve corresponding to the time is a parallel trend, then the corresponding standard temperature control mode is determined to be the hysteresis constant temperature mode.

[0074] 203. Based on the standard oven temperature and the standard temperature control method, determine the oven temperature upper limit value and the oven temperature lower limit value corresponding to the target temperature zone, and the oven temperature upper limit value and the oven temperature lower limit value constitute the oven temperature range.

[0075] Among them, the standard temperature control modes include: hysteresis heating mode, hysteresis cooling mode, and hysteresis constant temperature mode.

[0076] For the embodiments of the present invention, in order to accurately control the oven temperature, it is first necessary to determine the upper limit value and the lower limit value of the oven temperature under different standard temperature control modes. Based on this, the method includes: based on the standard oven temperature and the hysteresis heating mode, determining the upper limit value and the lower limit value of the heating oven temperature corresponding to the target temperature zone; based on the standard oven temperature and the hysteresis cooling mode, determining the upper limit value and the lower limit value of the cooling oven temperature corresponding to the target temperature zone; based on the standard oven temperature and the hysteresis constant temperature mode, determining the upper limit value and the lower limit value of the constant temperature oven temperature corresponding to the target temperature zone.

[0077] Specifically, the allowable deviation of the oven temperature in the hysteresis heating mode is determined, and then the upper limit value and the lower limit value of the heating oven temperature in the hysteresis heating mode are determined based on the standard oven temperature and the allowable deviation. For example, if the standard oven temperature is 50°C and the allowable deviation of the oven temperature in the hysteresis heating mode is ±5°C, then the upper limit value of the heating oven temperature is 55°C and the lower limit value of the heating oven temperature is 45°C. Similarly, the allowable deviation of the oven temperature in the hysteresis cooling mode is determined, and then the upper limit value and the lower limit value of the cooling oven temperature in the hysteresis cooling mode are determined based on the standard oven temperature in the cooling mode and the allowable deviation. For example, if the standard oven temperature in the cooling mode is 650°C and the allowable deviation of the oven temperature in the hysteresis cooling mode is ±20°C, then the upper limit value of the cooling oven temperature is 670°C and the lower limit value of the cooling oven temperature is 630°C. Similarly, the allowable deviation of the oven temperature in the hysteresis constant temperature mode is determined, and then the upper limit value of the constant temperature oven temperature and the lower limit value of the constant temperature oven temperature in the hysteresis constant temperature mode are determined based on the standard oven temperature and the allowable deviation in the constant temperature mode. For example, if the standard oven temperature in the constant temperature mode is 350°C, and the allowable deviation of the oven temperature in the hysteresis constant temperature mode is ±10°C, then the upper limit value of the constant temperature oven temperature is 360°C, and the lower limit value of the constant temperature oven temperature is 340°C. Thus, by setting the upper limit value and the lower limit value of the temperature in different modes, the oven temperature in different modes can be accurately controlled. Setting the upper limit value for the oven temperature can prevent the internal temperature of the oven from being too high, thereby avoiding overheating damage to the oven structure, the insulation material, and the baked materials or products. Setting the lower limit value for the oven temperature can ensure that the internal temperature of the furnace body reaches a certain level, thereby accelerating the evaporation of water and the discharge of volatiles, which is helpful to improve the efficiency and effect of the oven. The embodiment of the present invention can ensure the stable operation of the power frequency coreless oven by controlling the oven temperature within the range of the upper limit value and the lower limit value.

[0078] 204. If the real-time temperature value is not within the oven temperature range, it is determined that the oven temperature in the target temperature zone meets the preset conditions for temperature control, and the oven temperature in the target temperature zone is automatically controlled based on the oven temperature control curve.

[0079] Specifically, determine the temperature control mode corresponding to the industrial frequency coreless furnace at this time, and judge whether the real-time temperature value is within the furnace temperature range formed by the furnace temperature lower limit value and the furnace temperature upper limit value corresponding to the temperature control mode. If the real-time temperature value is not within the furnace temperature range, it is determined that the furnace temperature in the target temperature zone meets the preset conditions for temperature control. At this time, it is necessary to automatically control the furnace temperature in the target temperature zone based on the furnace temperature control curve. Based on this, step 204 specifically includes: in the hysteresis heating mode, if the real-time temperature value is less than the heating furnace temperature lower limit value, the temperature increase signal of the target temperature zone is triggered. When the temperature increase signal is received, the control The lower limit relay is in the on state, so as to control the heating element to perform heating operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state; if the real-time temperature value is greater than the upper limit value of the heating oven temperature, the prohibition signal of temperature rise for the target temperature zone is triggered. When the prohibition signal of temperature rise is received, the upper limit relay is controlled to be in the off state, so as to control the heating element to stop heating operation on the target temperature zone based on the oven temperature control curve by using the upper limit relay in the off state; in the hysteresis cooling mode, if the real-time temperature value is less than the lower limit value of the cooling oven temperature, the prohibition signal of cooling for the target temperature zone is triggered. When the refrigeration prohibition signal is received, the upper limit relay is controlled to be in the off state, so as to control the refrigeration element to stop refrigerating the target temperature zone based on the oven temperature control curve using the upper limit relay in the off state; if the real-time temperature value is greater than the upper limit value of the refrigeration oven temperature, the refrigeration signal of the target temperature zone is triggered, and when the refrigeration signal is received, the lower limit relay is controlled to be in the on state, so as to control the refrigeration element to perform refrigeration operation on the target temperature zone based on the oven temperature control curve using the lower limit relay in the on state; in the hysteresis constant temperature mode, if the real-time temperature value is less than the lower limit value of the constant temperature oven temperature, the target temperature zone is triggered. A constant temperature heating signal for the target temperature zone is received. When the constant temperature heating signal is received, the upper limit relay and the lower limit relay are controlled to be in the on state, so as to control the heating element to perform heating operation on the target temperature zone based on the temperature control curve of the oven using the upper limit relay and the upper limit relay in the on state; if the real-time temperature value is greater than the upper limit value of the constant temperature oven temperature, a constant temperature cooling signal for the target temperature zone is triggered. When the constant temperature cooling signal is received, the upper limit relay and the lower limit relay are controlled to be in the on state, so as to control the cooling element to perform cooling operation on the target temperature zone based on the temperature control curve of the oven using the upper limit relay and the lower limit relay in the on state.

[0080] Among them, the temperature control system also includes: limit instruments (upper limit instruments and lower limit instruments), temperature sensors, controllers, relays (upper limit relays and lower limit relays), heating elements, cooling elements, etc. The controllers are electrically connected to the limit instruments, temperature sensors, and relays, and the relays are electrically connected to the heating elements and cooling elements, respectively.

[0081] Specifically, in the hysteresis heating mode, if the lower limit value of the heating furnace temperature is set to 40°C and the upper limit value of the heating furnace temperature is 80°C, when the temperature sensor measures the real-time temperature of the furnace to be 20°C, the temperature sensor transmits the real-time temperature value to the controller, and the controller determines that the real-time temperature value is less than the lower limit value of the heating furnace temperature. At this time, the lower limit instrument indicator is controlled to light up. At this time, the lower limit instrument generates a heating signal for the target temperature zone and transmits the heating signal to the controller. After receiving the heating signal, the controller controls the lower limit relay to be in a total low-pass state and a total high-off state. The relays in the total low-pass state and the total high-off state are in an on state (working state). The lower limit relays in the total low-pass state and the total high-off state will control the heating element to heat the lining of the industrial frequency coreless furnace to be controlled, so that the furnace temperature approaches the standard furnace temperature. Furthermore, the specific method of controlling the heating element to perform heating operation on the target temperature zone by using the lower limit relay in the total low-on state and the total high-off state includes: in the process of controlling the heating element to perform heating operation on the target temperature zone based on the furnace temperature control curve by using the lower limit relay in the total low-on state and the total high-off state, collecting the real-time furnace temperature of the target temperature zone; determining the temperature difference between the real-time furnace temperature and the corresponding standard furnace temperature in the furnace temperature control curve; based on the temperature difference, determining the duty cycle of the lower limit relay, and controlling the lower limit relay to perform heating operation on the target temperature zone under the duty cycle.

[0082] Specifically, in the process of using a relay to control the heating element to heat the furnace lining, when the real-time furnace temperature has not entered the preset temperature range (set according to actual needs), the relay is always low-passed and the load temperature rises. When the real-time furnace temperature enters the preset temperature range, the relay begins to switch regularly. The closer the temperature is to the set temperature, the shorter the total low-pass time, and vice versa.

[0083] Furthermore, if the temperature sensor measures the real-time temperature value of the oven to be 100°C, the temperature sensor transmits the real-time temperature value to the controller, and the controller determines that the real-time temperature value is greater than the upper limit value of the heating oven temperature. At this time, the upper limit value instrument indicator is controlled to light up, and the upper limit value instrument generates a prohibition signal for temperature rise, and transmits the prohibition signal for temperature rise to the controller. After the controller receives the prohibition signal for temperature rise, the lower limit relay and the upper limit relay are controlled to be in the total high-through state and the total low-off state (disconnected state). The lower limit relay in the total high-through state and the total low-off state will stop controlling the heating element to heat the furnace lining of the controlled industrial frequency coreless furnace. The upper limit relay and the lower limit relay in the total high-through state and the total low-off state are in the disconnected state. The relay in this state cannot input current to the heating element, that is, the heating element cannot heat the furnace lining, so that the oven temperature will decrease so that the oven temperature approaches the standard oven temperature.

[0084] Furthermore, in the hysteresis refrigeration mode, if the lower limit value of the refrigeration furnace temperature is set to 20°C and the upper limit value of the refrigeration furnace temperature is 60°C, when the temperature sensor measures the real-time temperature of the furnace to be 15°C, the temperature sensor transmits the real-time temperature value to the controller, and the controller determines that the real-time temperature value is less than the lower limit value of the refrigeration furnace temperature. At this time, the upper limit value instrument indicator is controlled to light up. At this time, the upper limit value instrument generates a refrigeration prohibition signal and transmits the refrigeration prohibition signal to the controller. After receiving the refrigeration prohibition signal, the controller controls the upper limit relay to be in the total high-through state and the total low-off state. The relay in the total high-through state and the total low-off state is in the disconnected state. The relay in the disconnected state cannot control the refrigeration element to perform refrigeration operation on the furnace lining, thereby stopping the continued refrigeration of the furnace lining to restore the furnace temperature to the standard temperature. If the temperature sensor measures the real-time temperature of the oven to be 70°C, the temperature sensor transmits the real-time temperature value to the controller, and the controller determines that the real-time temperature value is greater than the upper limit value of the refrigeration oven temperature. At this time, the lower limit value instrument indicator is controlled to light up. At this time, the lower limit value instrument generates a refrigeration signal and transmits the refrigeration signal to the controller. After receiving the refrigeration signal, the controller controls the lower limit relay to be in the total low-through state and the total high-off state. The lower limit relay in the total low-through state and the total high-off state is in the on state (working state). The lower limit relay in the on state will control the refrigeration element to perform refrigeration operation on the furnace lining, so that the oven temperature will decrease, so that the oven temperature approaches the standard oven temperature.

[0085] Furthermore, in the hysteresis constant temperature mode, if the lower limit value of the constant temperature oven temperature is set to 100°C and the upper limit value of the constant temperature oven temperature is 150°C, when the temperature sensor measures the real-time temperature value of the oven to be 80°C, the temperature sensor transmits the real-time temperature value to the controller, and the controller determines that the real-time temperature value is less than the lower limit value of the constant temperature oven temperature. At this time, the upper limit value instrument and the lower limit value instrument are controlled to light up. At this time, the upper limit value instrument and the lower limit value instrument both generate a constant temperature heating signal. After receiving the constant temperature heating signal, the controller controls the upper limit relay and the lower limit relay to be in a total low-through state and a total high-off state (on working state). The upper and lower limit relays in the total low-through state and the total high-off state are in an on state. The relay in the on state will control the heating element to heat the furnace lining to restore the oven temperature to the standard temperature for insulation. If the temperature sensor measures the real-time temperature value of the oven to be 170°C, the temperature sensor transmits the real-time temperature value to the controller, and the controller determines that the real-time temperature value is greater than the upper limit value of the constant temperature oven temperature. At this time, the upper limit value instrument and the lower limit value instrument are controlled to light up. At this time, the upper limit value instrument and the lower limit value instrument generate a refrigeration signal and transmit the refrigeration signal to the controller. After receiving the refrigeration signal, the controller controls the upper limit relay and the lower limit relay to connect the heating element to the circuit of the total high pass and the total low break state (disconnected state), and at the same time controls the upper limit relay and the lower limit relay to connect the refrigeration element to the circuit of the total low pass and the total high break state (connected state), so as to use the upper limit relay and the lower limit relay in the total low pass state and the total high break state to control the refrigeration element to perform refrigeration operation on the target temperature zone. In the embodiment of the present invention, the temperature is changed by changing the average heating power of the load in the instrument, so when the heat dissipation and heating are balanced, the temperature can be basically stable within a very small range. The connection between the thermocouple (heating element) and the relay and other instruments requires the use of a corresponding type of compensation wire, and the specified compensation wire must be used. If you use an ordinary extension cord or compensation wire and the positive and negative poles are connected in reverse, errors will occur. The red color of the compensation wire represents the "+" pole, and the blue (black or white) represents the "-" pole. Thermocouple: The positive and negative poles are measured as short-circuited by a multimeter. For every 1C change in temperature, the positive and negative signals of the K-type sensor change by about 0.04mV. The core temperature controller in the temperature control system is based on a single-chip microcomputer. For example, it adopts the SMT patch process, has precise temperature control and strong anti-interference ability, and automatically compensates the cold end of the thermocouple. The controller in the embodiment of the present invention can use a three-position automatic controller to control the temperature of the oven, which can coordinate controllers such as temperature controllers, oven curve controllers and temperature PID controllers.

[0086] 205. If the real-time temperature value is within the oven temperature range, it is determined that the oven temperature in the target temperature zone does not meet the preset conditions for temperature control, and automatic control of the oven temperature in the target temperature zone is prohibited.

[0087] Specifically, if the real-time temperature value is not within the interval formed by the upper and lower limits of the oven temperature, the real-time temperature value at this time is determined to meet the oven demand, and there is no need to waste temperature control resources to control the oven temperature.

[0088] The power frequency coreless furnace is controlled by a digital temperature indicator and regulator, and the automatic control of the oven temperature is realized by combining the touch screen. Since there are many temperature zones in the coreless furnace, the control of each temperature zone is similar. Here, the automatic control method of the oven temperature in the medium temperature zone is used as an example. According to the furnace lining baking curve, set the temperature range to be controlled: set the lower limit temperature to 150°, and set the upper limit temperature according to the heating rate, such as 168°. Implement automatic oven temperature control in the 7# coreless furnace. Instrument terminals 4 and 8 are short-circuited; terminal 8 is connected to 24V+; terminal 9 is connected to the "main circuit on" 581 terminal; terminal 5 is connected to the "main circuit off" 601 terminal. On-site simulation debugging, the temperature error is less than 2 degrees, and the temperature range should not be set too small. If the range is too small, the temperature control will be out of control. Frequent power outages and large current changes will cause the temperature to fluctuate, and the control purpose will be lost. After repeated debugging, it is appropriate to have a temperature range greater than 50 degrees. The furnace lining temperature is balanced and controlled. According to the furnace baking curve, the temperature can be automatically controlled at each stage of the furnace baking, so that the furnace lining material is more delicate and tight; the transverse cracks generated in the furnace lining baking stage are greatly reduced, and the service life of the furnace lining is effectively improved. Instrument terminals 4 and 8 are short-circuited; terminal 8 is connected to 24V+; terminal 9 is connected to the "main circuit on" terminal 581; terminal 5 is connected to the "main circuit off" terminal 601. On-site simulation debugging, the temperature error is less than 2 degrees, and the temperature range should not be set too small. If the range is too small, the temperature control will be out of control. Frequent power outages and large current changes will cause the temperature to fluctuate, and the control purpose will be lost. When the actual temperature value is lower than the lower limit set temperature value, the green light is on, and the upper and lower limit output relays are always low-through and always high-off: when the actual temperature value is between the upper and lower limit set values, the green and red lights are not on, the lower limit output relay is always high-through and always low-off, and the upper limit output relay is always low-through and always high-off; when the actual temperature value is higher than the upper limit set temperature value, the red light is on, and the upper and lower limit output relays are always low-off and always high-through. When using, the lower limit can be used for heating control, the upper limit can be used for over-temperature alarm, or the upper and lower limits can be used together to control the temperature within a certain range. Time proportional control (PID control): When the measured value does not enter the proportional band, the instrument relay is always low-through and the load temperature rises. After entering the proportional band, the relay begins to switch regularly. The closer the temperature is to the set temperature, the shorter the time of the total low pass, and vice versa. Hysteresis heating mode (F1): If the lower limit temperature of the instrument is set to 40C and the upper limit temperature is 80; when the measured temperature is lower than 40C, the lower limit output indicator light is on, the low limit is always on, the high limit is always off, and heating is started; when the measured temperature is higher than 40C and lower than 80, the output state does not change; when the measured temperature is higher than 80, the upper limit output indicator light is on, the lower limit output indicator light is off, the low limit is always off, the high limit is always on, and heating is stopped.In summary, an automatic temperature control method for an industrial frequency coreless furnace provided by an embodiment of the present invention realizes automatic control of the furnace temperature in all stages, is simple to put into operation, and has precise temperature control, thereby avoiding temperature control disorders such as excessively rapid temperature rise and slow continuous temperature rise, and is easy to implement by upgrading and transforming the original system of the coreless furnace without the need for additional hardware development and costs.

[0089] According to another automatic control method for the baking temperature of an industrial frequency coreless furnace provided by the present invention, compared with the current method of manually controlling the baking temperature of an industrial frequency coreless furnace, the present invention determines the target temperature zone indicated by the baking temperature control signal of the industrial frequency coreless furnace to be controlled in response to the baking temperature control signal of the industrial frequency coreless furnace to be controlled, obtains the baking temperature control curve corresponding to the target temperature zone, and collects the real-time temperature value of the target temperature zone, wherein the baking temperature control curve contains standard baking temperatures corresponding to different baking times; then, based on the real-time temperature value, the baking time corresponding to the real-time temperature value, and the baking temperature control curve, it is judged whether the baking temperature of the target temperature zone meets the preset conditions for temperature control; finally, if the baking temperature of the target temperature zone meets the preset conditions, the baking temperature of the target temperature zone is automatically regulated based on the baking temperature control curve. The temperature control system thus determines in advance whether the furnace temperature in the target temperature zone meets the preset conditions for temperature control by collecting the real-time temperature value of the target temperature zone, the furnace temperature control curve, and the baking time corresponding to the real-time temperature value, and then controls the furnace temperature when the preset conditions for temperature control are met. This avoids wasting control resources by controlling the furnace temperature when the temperature conditions are not met. At the same time, the present invention realizes automatic control of the furnace temperature according to the real-time temperature value and the temperature control curve through the temperature control system, which avoids the problem of low control accuracy caused by manual control, thereby improving the control accuracy of the furnace temperature and saving manpower and material resources.

[0090] Further, as Figure 1 The specific implementation of the present invention provides a temperature automatic control device for a coreless furnace at a power frequency, such as Figure 4 As shown, the device includes: an acquisition unit 31, a judgment unit 32, and a control unit 33.

[0091] The acquisition unit 31 can be used to respond to the furnace temperature control signal of the industrial frequency coreless furnace to be controlled, determine the target temperature zone indicated by the furnace temperature control signal, and obtain the furnace temperature control curve corresponding to the target temperature zone, and collect the real-time temperature value of the target temperature zone, wherein the furnace temperature control curve contains standard furnace temperatures corresponding to different baking times.

[0092] The judgment unit 32 may be configured to judge whether the oven temperature in the target temperature zone meets preset conditions for temperature control based on the real-time temperature value, the oven time corresponding to the real-time temperature value, and the oven temperature control curve.

[0093] The control unit 33 may be configured to automatically control the oven temperature of the target temperature zone based on the oven temperature control curve if the oven temperature of the target temperature zone meets the preset condition.

[0094] In a specific application scenario, in order to determine whether the oven temperature in the target temperature zone meets the preset conditions for temperature control, the determination unit 32 includes a first determination module 321 and a determination module 322 .

[0095] The first determination module 321 may be used to determine a standard baking oven temperature and a standard temperature control method corresponding to the baking time in the baking oven temperature control curve.

[0096] The first determination module 321 can be specifically used to determine the upper limit value and the lower limit value of the oven temperature corresponding to the target temperature zone based on the standard oven temperature and the standard temperature control method, and the oven temperature upper limit value and the oven temperature lower limit value constitute the oven temperature range.

[0097] The determination module 322 may be configured to determine whether the oven temperature in the target temperature zone meets a preset condition for temperature control if the real-time temperature value is not within the oven temperature range.

[0098] The determination module 322 may also be used to determine that the oven temperature in the target temperature zone does not meet the preset temperature control conditions if the real-time temperature value is within the oven temperature range, thereby prohibiting automatic control of the oven temperature in the target temperature zone.

[0099] In a specific application scenario, the standard temperature control method includes: one of a hysteresis heating mode, a hysteresis cooling mode, and a hysteresis constant temperature mode. In order to determine the upper limit value and the lower limit value of the oven temperature corresponding to the target temperature zone, the first determination module 321 can be specifically used to determine the upper limit value and the lower limit value of the oven temperature corresponding to the target temperature zone based on the standard oven temperature and the standard temperature control method, including: based on the standard oven temperature and the hysteresis heating mode, determining the upper limit value and the lower limit value of the heating oven temperature corresponding to the target temperature zone; based on the standard oven temperature and the hysteresis cooling mode, determining the upper limit value and the lower limit value of the cooling oven temperature corresponding to the target temperature zone; based on the standard oven temperature and the hysteresis constant temperature mode, determining the upper limit value and the lower limit value of the constant temperature oven temperature corresponding to the target temperature zone.

[0100] In a specific application scenario, in order to automatically control the oven temperature in the target temperature zone, the control unit 33 can be specifically used to, in the hysteresis heating mode, if the real-time temperature value is less than the lower limit value of the heating oven temperature, trigger the temperature increase signal of the target temperature zone, and when the temperature increase signal is received, control the lower limit relay to be in the on state, so as to control the heating element to perform heating operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state; if the real-time temperature value is greater than the upper limit value of the heating oven temperature, trigger the temperature increase prohibition signal of the target temperature zone, and when the temperature increase prohibition signal is received, control the upper limit relay to be in the off state, so as to control the heating element to stop heating the target temperature zone based on the oven temperature control curve by using the upper limit relay in the off state; in the hysteresis cooling mode, if the real-time temperature value is less than the lower limit value of the cooling oven temperature, trigger the cooling prohibition signal of the target temperature zone, and when the cooling prohibition signal is received, control the upper limit relay to be in the off state, so as to control the cooling element based on the oven temperature control curve by using the upper limit relay in the off state. Stop the refrigeration operation on the target temperature zone; if the real-time temperature value is greater than the upper limit value of the refrigeration oven temperature, trigger the refrigeration signal of the target temperature zone, and when the refrigeration signal is received, control the lower limit relay to be in the on state, so as to control the refrigeration element to perform refrigeration operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state; in the hysteresis constant temperature mode, if the real-time temperature value is less than the lower limit value of the constant temperature oven temperature, trigger the constant temperature heating signal of the target temperature zone, and when the constant temperature heating signal is received, control the upper limit relay and the lower limit relay to be in the on state, so as to control the heating element to perform heating operation on the target temperature zone based on the oven temperature control curve by using the upper limit relay and the upper limit relay in the on state; if the real-time temperature value is greater than the upper limit value of the constant temperature oven temperature, trigger the constant temperature refrigeration signal of the target temperature zone, and when the constant temperature refrigeration signal is received, control the upper limit relay and the lower limit relay to be in the on state, so as to control the refrigeration element to perform refrigeration operation on the target temperature zone by using the upper limit relay and the lower limit relay in the on state based on the oven temperature control curve.

[0101] In a specific application scenario, in order to perform heating operations on the target temperature zone, the control unit 33 can be specifically used to collect the real-time furnace temperature of the target temperature zone during the process of controlling the heating element to heat the target temperature zone based on the furnace temperature control curve using the lower limit relay in the total low-on state and the total high-off state; determine the temperature difference between the real-time furnace temperature and the corresponding standard furnace temperature in the furnace temperature control curve; determine the working cycle of the lower limit relay based on the temperature difference, and control the lower limit relay to heat the target temperature zone under the working cycle.

[0102] In a specific application scenario, in order to obtain the oven temperature control curve corresponding to the target temperature zone, the acquisition unit 31 includes a second determination module 311 , a cross processing module 312 , an estimation module 313 , and a splitting module 314 .

[0103] The second determination module 311 may be used to determine the oven requirement information, oven property information, and material property information of the baked material of the industrial frequency coreless oven to be controlled.

[0104] The second determination module 311 may be specifically used to determine a demand feature vector corresponding to the oven demand information, a oven feature vector corresponding to the oven attribute information, and a material feature vector corresponding to the material attribute information.

[0105] The cross processing module 312 may be used to perform cross processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a baking furnace cross feature vector.

[0106] The estimation module 313 may be used to input the baking furnace cross characteristic vector into a preset temperature control curve estimation model to estimate the temperature control curve, and obtain the total baking furnace temperature control curve of the industrial frequency coreless furnace to be controlled.

[0107] The splitting module 314 can be used to split the total oven temperature control curve according to different temperature zones based on the target temperature zone to obtain the oven temperature control curve corresponding to the target temperature zone.

[0108] In a specific application scenario, in order to determine the baking furnace cross feature vector, the cross processing module 312 can be specifically used to perform feature-level cross processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a feature cross vector; perform element-level cross processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain an element cross vector; perform low-order cross processing on the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a low-order cross vector; use a preset transformation function to transform the feature cross vector, the element cross vector, and the low-order cross vector to obtain a baking furnace cross feature vector.

[0109] It should be noted that for other corresponding descriptions of the functional modules involved in the automatic temperature control device for a coreless furnace provided by the embodiment of the present invention, reference can be made to Figure 1 The corresponding description of the method shown will not be repeated here.

[0110] Based on the above Figure 1 The method shown, accordingly, the embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented: in response to the baking furnace temperature control signal of the industrial frequency coreless furnace to be controlled, determine the target temperature zone indicated by the baking furnace temperature control signal, and obtain the baking furnace temperature control curve corresponding to the target temperature zone, and collect the real-time temperature value of the target temperature zone, wherein the baking furnace temperature control curve contains standard baking furnace temperatures corresponding to different baking furnace times; based on the real-time temperature value, the baking furnace time corresponding to the real-time temperature value, and the baking furnace temperature control curve, judge whether the baking furnace temperature of the target temperature zone meets the preset conditions for temperature control; if the baking furnace temperature of the target temperature zone meets the preset conditions, then based on the baking furnace temperature control curve, automatically control the baking furnace temperature of the target temperature zone.

[0111] Based on the above Figure 1 The method shown and Figure 4 The embodiment of the device shown in the figure, the embodiment of the present invention also provides a physical structure diagram of a computer device, such as Figure 5 As shown, the computer device includes: a processor 41, a memory 42, and a computer program stored in the memory 42 and executable on the processor, wherein the memory 42 and the processor 41 are both arranged on a bus 43, and the processor 41 implements the following steps when executing the program: in response to a baking furnace temperature control signal of the industrial frequency coreless furnace to be controlled, determining a target temperature zone indicated by the baking furnace temperature control signal, acquiring a baking furnace temperature control curve corresponding to the target temperature zone, and collecting a real-time temperature value of the target temperature zone, wherein the baking furnace temperature control curve includes a standard baking furnace temperature corresponding to different baking furnace times; judging whether the baking furnace temperature of the target temperature zone meets the preset conditions for temperature control based on the real-time temperature value, the baking furnace time corresponding to the real-time temperature value, and the baking furnace temperature control curve; if the baking furnace temperature of the target temperature zone meets the preset conditions, then automatically regulating the baking furnace temperature of the target temperature zone based on the baking furnace temperature control curve.

[0112] Through the technical scheme of the present invention, the present invention determines the target temperature zone indicated by the furnace temperature control signal in response to the furnace temperature control signal of the industrial frequency coreless furnace to be controlled, obtains the furnace temperature control curve corresponding to the target temperature zone, and collects the real-time temperature value of the target temperature zone, wherein the furnace temperature control curve contains standard furnace temperatures corresponding to different furnace times; then, based on the real-time temperature value, the furnace time corresponding to the real-time temperature value, and the furnace temperature control curve, it is judged whether the furnace temperature of the target temperature zone meets the preset conditions for temperature control; finally, if the furnace temperature of the target temperature zone meets the preset conditions, the furnace temperature of the target temperature zone is automatically regulated based on the furnace temperature control curve. The temperature control system thus determines in advance whether the furnace temperature in the target temperature zone meets the preset conditions for temperature control by collecting the real-time temperature value of the target temperature zone, the furnace temperature control curve, and the baking time corresponding to the real-time temperature value, and then controls the furnace temperature when the preset conditions for temperature control are met. This avoids wasting control resources by controlling the furnace temperature when the temperature conditions are not met. At the same time, the present invention realizes automatic control of the furnace temperature according to the real-time temperature value and the temperature control curve through the temperature control system, which avoids the problem of low control accuracy caused by manual control, thereby improving the control accuracy of the furnace temperature and saving manpower and material resources.

[0113] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0114] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for automatically controlling the temperature of a power frequency coreless furnace, characterized in that: include: In response to a baking furnace temperature control signal of a power frequency coreless furnace to be controlled, a target temperature zone indicated by the baking furnace temperature control signal is determined, and a baking furnace temperature control curve corresponding to the target temperature zone is obtained, and a real-time temperature value of the target temperature zone is collected, wherein the baking furnace temperature control curve contains standard baking furnace temperatures corresponding to different baking furnace times; Based on the real-time temperature value, the oven-baking time corresponding to the real-time temperature value, and the oven-baking temperature control curve, determining whether the oven temperature in the target temperature zone meets the preset conditions for temperature control; If the oven temperature in the target temperature zone meets the preset condition, the oven temperature in the target temperature zone is automatically regulated based on the oven temperature control curve.

2. The method according to claim 1, characterized in that The determining whether the oven temperature in the target temperature zone meets the preset condition of temperature control based on the real-time temperature value, the oven time corresponding to the real-time temperature value, and the oven temperature control curve includes: Determining a standard oven temperature and a standard temperature control method corresponding to the oven baking time in the oven temperature control curve; Based on the standard oven temperature and the standard temperature control method, determine the oven temperature upper limit value and the oven temperature lower limit value corresponding to the target temperature zone, and the oven temperature upper limit value and the oven temperature lower limit value constitute the oven temperature interval; If the real-time temperature value is not within the oven temperature range, it is determined that the oven temperature in the target temperature zone meets the preset conditions for temperature control; If the real-time temperature value is within the oven temperature range, it is determined that the oven temperature in the target temperature zone does not meet the preset conditions for temperature control, and automatic control of the oven temperature in the target temperature zone is prohibited.

3. The method according to claim 2, characterized in that The standard temperature control mode includes: one of a hysteresis heating mode, a hysteresis cooling mode, and a hysteresis constant temperature mode; The determining, based on the standard oven temperature and the standard temperature control method, an upper oven temperature limit value and a lower oven temperature limit value corresponding to the target temperature zone includes: Based on the standard oven temperature and the hysteresis heating mode, determining an upper limit value and a lower limit value of the heating oven temperature corresponding to the target temperature zone; Based on the standard oven temperature and the hysteresis refrigeration mode, determining an upper temperature limit value and a lower temperature limit value of the refrigeration oven temperature corresponding to the target temperature zone; Based on the standard oven temperature and the hysteresis constant temperature mode, an upper limit value of the constant temperature oven temperature and a lower limit value of the constant temperature oven temperature corresponding to the target temperature zone are determined.

4. The method according to claim 3, characterized in that: The automatic control of the oven temperature in the target temperature zone based on the oven temperature control curve includes: In the hysteresis heating mode, if the real-time temperature value is less than the lower limit value of the heating oven temperature, a temperature increase signal of the target temperature zone is triggered. When the temperature increase signal is received, the lower limit relay is controlled to be in an on state, so as to control the heating element to perform heating operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state; If the real-time temperature value is greater than the upper limit value of the heating oven temperature, a prohibition signal for temperature rise of the target temperature zone is triggered. When the prohibition signal for temperature rise is received, the upper limit relay is controlled to be in an off state, so as to control the heating element to stop heating the target temperature zone based on the oven temperature control curve by using the upper limit relay in the off state; In the hysteresis cooling mode, if the real-time temperature value is less than the lower limit value of the refrigeration oven temperature, a refrigeration prohibition signal for the target temperature zone is triggered. When the refrigeration prohibition signal is received, the upper limit relay is controlled to be in an off state, so as to control the refrigeration element to stop refrigerating the target temperature zone based on the oven temperature control curve by using the upper limit relay in the off state; If the real-time temperature value is greater than the upper limit value of the refrigeration oven temperature, a refrigeration signal for the target temperature zone is triggered. When the refrigeration signal is received, the lower limit relay is controlled to be in the on state, so as to control the refrigeration element to perform refrigeration operation on the target temperature zone based on the oven temperature control curve by using the lower limit relay in the on state; In the hysteresis constant temperature mode, if the real-time temperature value is less than the lower limit value of the constant temperature oven temperature, the constant temperature heating signal of the target temperature zone is triggered. When the constant temperature heating signal is received, the upper limit relay and the lower limit relay are controlled to be in the on state, so as to control the heating element to perform heating operation on the target temperature zone by using the upper limit relay and the lower limit relay in the on state based on the oven temperature control curve; If the real-time temperature value is greater than the upper limit value of the constant temperature oven temperature, the constant temperature refrigeration signal of the target temperature zone is triggered. When the constant temperature refrigeration signal is received, the upper limit relay and the lower limit relay are controlled to be in the on state, so as to control the refrigeration element to perform cooling operation on the target temperature zone based on the oven temperature control curve by utilizing the upper limit relay and the lower limit relay in the on state.

5. The method according to claim 4, characterized in that The method of controlling the heating element to heat the target temperature zone by using the lower limit relay in the total low-on state and the total high-off state based on the oven temperature control curve includes: In the process of controlling the heating element to heat the target temperature zone by using the lower limit relay in the total low-on state and the total high-off state based on the oven temperature control curve, collecting the real-time oven temperature of the target temperature zone; Determine the temperature difference between the real-time oven temperature and the corresponding standard oven temperature in the oven temperature control curve; Based on the temperature difference, a duty cycle of the lower limit relay is determined, and the lower limit relay is controlled to perform a heating operation on the target temperature zone under the duty cycle.

6. The method according to claim 1, characterized in that The step of obtaining the oven temperature control curve corresponding to the target temperature zone includes: Determine the oven requirement information, oven property information, and material property information of the baked material of the industrial frequency coreless oven to be controlled; Determine a demand feature vector corresponding to the oven demand information, a oven feature vector corresponding to the oven attribute information, and a material feature vector corresponding to the material attribute information; Cross-processing the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain a baking furnace cross feature vector; Inputting the baking furnace cross characteristic vector into a preset temperature control curve prediction model to perform temperature control curve prediction, and obtaining a total baking furnace temperature control curve of the industrial frequency coreless furnace to be controlled; Based on the target temperature zone, the total oven temperature control curve is split according to different temperature zones to obtain the oven temperature control curve corresponding to the target temperature zone.

7. The method according to claim 6, characterized in that The cross-processing of the demand feature vector, the baking furnace feature vector, and the material feature vector to obtain the baking furnace cross feature vector includes: Perform feature-level cross processing on the demand feature vector, the oven feature vector, and the material feature vector to obtain a feature cross vector; Perform element-level cross processing on the demand feature vector, the oven feature vector, and the material feature vector to obtain an element cross vector; Perform low-order cross processing on the demand feature vector, the oven feature vector, and the material feature vector to obtain a low-order cross vector; The characteristic cross vector, element cross vector and low-order cross vector are transformed by using a preset transformation function to obtain a baking oven cross characteristic vector.

8. An automatic temperature control device for a power frequency coreless furnace, characterized in that: include: an acquisition unit, for responding to a baking furnace temperature control signal of a power frequency coreless furnace to be controlled, determining a target temperature zone indicated by the baking furnace temperature control signal, acquiring a baking furnace temperature control curve corresponding to the target temperature zone, and collecting a real-time temperature value of the target temperature zone, wherein the baking furnace temperature control curve includes standard baking furnace temperatures corresponding to different baking furnace times; A judgment unit, configured to judge whether the oven temperature in the target temperature zone meets a preset condition for temperature control based on the real-time temperature value, the oven time corresponding to the real-time temperature value, and the oven temperature control curve; The control unit is used to automatically control the oven temperature of the target temperature zone based on the oven temperature control curve if the oven temperature of the target temperature zone meets the preset condition.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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