Automatic control system and control method for dye vat heating device

Abstract

The invention particularly relates to an automatic control system and method for a dye vat heating device. The system comprises a data center control platform, the data center control platform stores process data, and the process data is used for guiding a combustion heater to carry out heating adjustment according to actual process requirements; the temperature change parameter issuing unit is used for reading the process data in the data center control platform, extracting key temperature change parameters in the process data and issuing the key temperature change parameters to the heating control unit; the heating control unit is used for calculating according to the received key temperature change parameters to obtain a process curve and sending the process curve to the combustion heater; and the combustion heater receives the process curve and adjusts combustion parameters in real time according to the process curve, so that the output load curve changes along with the process curve. The system can realize continuous variable temperature control of the dye vat based on a complex production process, has the advantage of high linearity, and can meet the requirements of a novel complex printing and dyeing process.

Description

Technical Field

[0001] The invention relates to the technical field of printing and dyeing equipment, and in particular to an automatic control system and a control method for a dye vat heating device. Background Art

[0002] In the process of fabric dyeing, temperature is a key factor affecting the dye uptake rate and dyeing effect. By heating the dye vat, the temperature of the dye liquid in the dye vat can be raised to the optimal dyeing temperature suitable for specific fiber materials and dyes. This helps to ensure uniform dyeing, improve dyeing quality and stability of the finished product.

[0003] Traditional dyeing vats are usually heated by a heating device connected to them. Usually, the control target of the heating device is a constant temperature. The means is to continuously turn on or off the heating device through the detection signal feedback of the temperature sensor so that the temperature of the dye liquid in the dyeing vat reaches the preset temperature target. For example, the Chinese patent document with publication number CN112226875A discloses a cashmere-like fabric process. In the implementation steps of this process, the temperature of the dyeing vat needs to be adjusted to the set target temperature and maintained so that the dye liquid can achieve the best adhesion and bonding effect with the fabric.

[0004] With the increasing complexity of the fiber composition of printed and dyed fabrics and the increasing demand for layered printing and dyeing of fabrics, manufacturers have put forward higher requirements for the heating control system of the dyeing vat. Under this requirement, the existing heating control system of the dyeing vat has the following shortcomings: the simple on / off heating form realizes constant temperature regulation by starting / stopping the heating device, which has the disadvantages of insufficient linearity and slow response speed; in the continuous temperature regulation, there is a non-continuous control dead zone. For the existing simple heating device, this defect will not cause actual effect; however, with the advancement of technology, many new heating devices have emerged, which have more complex and flexible control methods such as power control, step control and feedback control. The above-mentioned traditional heating control system cannot meet the flexible control of such new heating devices, and thus cannot provide the continuous linear temperature change required by the fabrics with high printing and dyeing requirements in production, which leads to the occurrence of problems such as substandard dyeing degree, and cannot meet the needs of new complex printing and dyeing processes. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic control system and control method for a dye vat heating device, which can realize continuous temperature control of the dye vat based on a complex production process, has the advantage of high linearity, and can meet the needs of new complex printing and dyeing processes.

[0006] In order to achieve the above object, the specific technical solution adopted by the present invention is: An automatic control system for a dye vat heating device, characterized in that the system comprises: A data central control platform, wherein the data central control platform stores process data, and the process data is used to guide the combustion heater to perform heating adjustment according to actual process requirements; A temperature change parameter sending unit, the temperature change parameter sending unit is used to read the process data in the data central control platform, extract key temperature change parameters therein, and send the key temperature change parameters to the heating control unit; A heating control unit, the heating control unit is used to calculate a process curve according to the received key temperature change parameters, and send the process curve to the combustion heater; A combustion heater receives the process curve and adjusts combustion parameters in real time according to the process curve, so that an output load curve follows the changes of the process curve.

[0007] The data control platform is a platform for inputting, integrating, managing and storing the original on-site production orders, which stores process data, which is used to guide the combustion heater to adjust the heating according to the actual process requirements. The on-site production order is a document that records all the production information of a product after the production task of a product is issued to the workshop. Part of the content corresponds to the process data of the product, which contains information in multiple dimensions, such as printing and dyeing temperature, printing and dyeing time, solubility ratio, additives, electrolytes and alkalis added, etc.

[0008] The temperature change parameter sending unit is the main data transmission unit. One end of the unit is connected to the data control platform to obtain and read the process data in the data control platform and extract the key temperature change parameters (such as printing and dyeing temperature and printing and dyeing time). The other end is connected to the heating control unit to send the acquired key temperature change parameters to it. As a two-way communication unit, the temperature change parameter sending unit has the ability to send and receive wireless data across regions and spaces.

[0009] The heating control unit is used to calculate and obtain a process curve according to the received key temperature change parameters, and send the process curve to the combustion heater. As a logical control unit, the heating control unit bears the task of receiving parameters and issuing commands. When it receives the key temperature change parameters sent by the temperature change parameter issuing unit, it will process them into a process curve according to the preset program. The process curve is usually developed with time as the axis, which contains temperature information that changes continuously with time. This information is non-discrete and has high linearity; it also carries specific information such as process numbers, so that the corresponding combustion heater can be accurately identified and used in the subsequent process. For example, in a simple heating control, the key temperature change parameters are a series of time points and corresponding temperature values. The heating control unit is based on multiple key points given by the user, such as the set temperature at the starting point of the time is 24°C, and the next time point, such as 8 minutes, is set to 105°C, and it needs to be maintained until the next time point, such as after an interval of 10 minutes, and then dropped to 75°C for 10 minutes. The heating control unit needs to calculate the above discrete temperature correspondence and obtain a continuous process curve, so that the combustion heater can adjust the power according to this process curve to ensure that the temperature changes according to the predetermined path. The calculation method can preferably use the cubic spline interpolation method to ensure the smoothness of the process curve and the continuity of the second-order derivative as much as possible, so that the temperature value of the combustion heater will not change suddenly when adjusting the temperature, so as to ensure the perfect adhesion of the dyeing materials under the requirements of the new complex printing and dyeing process. In addition, for the production workshop computing center responsible for running the heating control unit, if its computing power is weak, it can also use an interpolation method with less calculation, such as linear interpolation, or use a lookup table comparison method to obtain the process curve.

[0010] As an actuator, the combustion heater is directly responsible for heating the dye vat. By changing its output load, it can be infinitely adjusted, but its output load curve needs to follow the process curve, that is, after the combustion heater receives the process curve sent by the heating control unit, it will use the process curve as the tracking target, so that the output load curve always follows, thereby realizing continuous temperature control of the dye vat temperature. The output load curve is realized by adjusting the combustion parameters of the combustion heater, which include operating status (power parameters), process number, current working step target temperature, current working step temperature rise rate, current working step insulation time, etc.

[0011] In summary, in the existing dye vat temperature control system, the temperature is increased by turning on the heating device and the temperature is reduced by turning off the heating device. The temperature sensor and the continuous on / off control are combined to perform constant temperature control, and high-precision continuous linear temperature control cannot be performed. In the present invention, based on the original process data of the product, the temperature change parameters are extracted and made into a process curve. Based on the continuous linear change characteristics of the process curve, the output load curve of the combustion heater is followed and guided, and the heating control of the dye vat is achieved by adjusting the combustion parameters of the combustion heater. Since the process curve is obtained using interpolation methods or even cubic spline interpolation methods, the curve has excellent smoothness, there is no temperature mutation and no regulation dead zone, and it can be well adapted to the new combustion heater. Based on this, the heating control form of the dye vat is transformed into linear continuous control, which allows the temperature of the dye solution in the dye vat to be changed accordingly for special fabrics to meet the needs of new complex printing and dyeing processes. It is precisely because the present invention introduces the original process data that the complex printing and dyeing process requirements are combined with the characteristics of the product itself. Compared with the traditional method of manually or programmatically setting one or more constant temperature values ​​and then controlling the heating device to maintain the constant temperature value, it has significant production guidance progress.

[0012] As a preferred embodiment of the present invention, the automatic control system of the dye vat heating device also includes a load control unit, which includes a load percentage input terminal and an analog input circuit connected to the load percentage input terminal and used to convert load percentage data into analog data; the analog input circuit is also connected to the heating control unit.

[0013] Therefore, the load control unit sends the dye vat load percentage signal to the heating control unit as a parallel control means, because the process curve sent by the heating control unit to the combustion heater cannot fully respond to various sudden failures. When the dye vat load has exceeded the warning load, if the combustion heater still works according to the original process curve, it may cause major safety accidents such as overheating and burning. Therefore, a parallel control means is reserved, and the dye vat load percentage signal is sent to the heating control unit through the load control unit as an insurance; for example, when the current load value indicated by the load percentage signal has exceeded the safety load threshold, operations including but not limited to shutdown and power reduction are taken. The analog input circuit is responsible for processing the dye vat load percentage signal into an analog quantity that is convenient for the heating control unit to calculate and analyze.

[0014] As a preferred embodiment of the present invention, the automatic control system of the dye vat heating device also includes a switch control unit, which includes a two-dimensional switch input end and a switch input circuit connected to the two-dimensional switch input end; the switch input circuit is also connected to the heating control unit.

[0015] Therefore, in order to make the production equipment using the automatic control system of the dye vat heating device meet the needs of complex printing and dyeing processes while also being backward compatible to handle the needs of simple printing and dyeing processes, a switch control unit connected to the heating control unit is specially set up. The switch control unit sends a simple two-dimensional on / off signal to the heating control unit, thereby achieving the purpose of heating control without providing key temperature change parameters of process data. The switch input circuit is used to convert the high and low level discrete signals of the two-dimensional switch input end into analog signals.

[0016] As a preferred embodiment of the present invention, the temperature change parameter sending unit includes a first sending link, which includes a cloud server connected to the data central control platform and a DTU transmission component connected to the cloud server; the DTU transmission component is connected to the heating control unit; the cloud server is used to extract key temperature change parameters and standard communication protocol conversion.

[0017] The cloud server can convert input data into data under standard communication protocols through built-in or third-party services, such as API gateways, message queues, etc. These services can help the cloud server communicate with different clients, applications or services to ensure accurate data transmission and interoperability. In the present invention, the first downlink is suitable for large-scale wireless control scenarios. The cloud server extracts key temperature change parameters and converts the data into data under standard communication protocols. The DTU transmission component completes the data downlink, where standard communication protocols include but are not limited to MODBUS, PROFIBUS, PROFIBUS, profinet, HART, CAN, BAcnet, zigbee and OPC.

[0018] As a preferred embodiment of the present invention, the temperature change parameter sending unit includes a second sending link, which includes an edge gateway server connected to the data central control platform and a standard network communication component connected to the edge gateway server; the edge gateway server is used to extract key temperature change parameters and standard communication protocol conversion.

[0019] The edge gateway server focuses more on data processing and protocol conversion at the edge of the network. It is usually deployed near the data source or terminal device, responsible for converting data from different devices and sensors into data under standard communication protocols for subsequent analysis, storage or transmission. The second downlink is more suitable for locally deployed systems, and its effectiveness and stability are more guaranteed than cloud servers. In the present invention, the first downlink and the second downlink back up each other to form redundant transmission, thereby ensuring the security and effectiveness of data transmission.

[0020] On the other hand, the present invention also provides an automatic control method for a dye vat heating device, characterized in that the method comprises: S01. Input the original on-site production order into the data central control platform and generate process data; the temperature change parameter issuing unit reads the process data in the data central control platform and extracts the key temperature change parameters therein; S02, the temperature change parameter sending unit sends the key temperature change parameter to the heating control unit; the heating control unit calculates and obtains the process curve according to the received key temperature change parameter; S03. The heating control unit sends the process curve to the combustion heater; the combustion heater adjusts the combustion parameters in real time according to the process curve, so that the output load curve follows the changes of the process curve.

[0021] As a preferred embodiment of the present invention, in S02, when the temperature change parameter sending unit sends the key temperature change parameter to the heating control unit, a dual-link redundant transmission method is adopted to ensure safe arrival of data.

[0022] As a preferred embodiment of the present invention, in S02, the heating control unit uses a cubic spline interpolation method to process the received key temperature change parameters into a process curve.

[0023] As a preferred embodiment of the present invention, the automatic control method of the dye vat heating device further comprises S04, specifically: S04. Construct an optimization storage unit, obtain the process curve and the output load curve, optimize and adjust the combustion parameters based on a preset optimization algorithm model, and save the adjustment scheme as an optimization template; use the optimization template to automatically match and optimize subsequent combustion parameters.

[0024] A preset optimization algorithm model is deployed in the optimization storage unit, which can optimize and adjust the combustion parameters based on the timing deviation of the process curve and the output load curve; and save the adjustment plan as an optimization template. When encountering similar timing deviations next time, the above optimization template can be directly applied to automatically match and optimize the subsequent combustion parameters.

[0025] As a preferred embodiment of the present invention, the automatic control method of the dye vat heating device also includes a network disconnection alarm and emergency processing step: the alarm unit detects the network connection status every 10 seconds, and if the network is detected to be disconnected, the alarm is triggered at a fixed time; if the disconnection timing duration exceeds 300 seconds, the locally stored emergency program is started to maintain the safe operation of the combustion heater and retain the data, and upload it to the cloud platform after the network is restored.

[0026] In this method, a network disconnection alarm and emergency processing step is also provided. When the system encounters a gateway power outage, a dyeing vat process is lost, or a dyeing vat is paused, a disconnection timing duration judgment step can be performed. When the disconnection timing duration exceeds 300 seconds, the locally stored emergency program is started to maintain the safe operation of the combustion heater, that is, the local mode is connected, and the saved data is uploaded to the cloud platform after the network is restored.

[0027] In summary, the present invention has the following beneficial effects: In the present invention, based on the original process data of the product, by extracting the temperature variation parameters therein and making them into a process curve, based on the continuous linear variation characteristics of the process curve, the output load curve of the combustion heater is followed and guided, and the heating control of the dyeing vat is realized by adjusting the combustion parameters of the combustion heater. Since the acquisition of the process curve uses interpolation method or even cubic spline interpolation method and other methods, the curve has excellent smoothness, there is no temperature mutation and no regulation dead zone, and it can be well adapted to the new combustion heater. Based on this, the heating control form of the dyeing vat is transformed into linear continuous control, which enables the temperature of the dye solution in the dyeing vat to make corresponding changes for special fabrics and meet the requirements of new complex printing and dyeing processes. It is precisely because the present invention introduces the original process data that the complex printing and dyeing process requirements are combined with the characteristics of the product itself. Compared with the traditional manual or program setting of one or more constant temperature values, and then controlling the heating device to maintain the constant temperature value, it has significant production guidance progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the block diagram of the automatic control system of the dye vat heating device; Figure 2 The figure is a flow chart of the automatic control method of the dye vat heating device. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Anyone can implement the present disclosure in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0030] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment".

[0031] Example 1 like Figure 1In the automatic control system of the dye vat heating device shown in the figure, in the whole system, the data central control platform is the platform for inputting the original on-site production orders and integrating, managing and storing data, in which the process data is stored, and the process data is used to guide the combustion heater to adjust the heating according to the actual process requirements.

[0032] The on-site production order is a document that records all the production information of a product after the production task of a product is issued to the workshop. Part of the content corresponds to the process data of the product. The process data contains information in multiple dimensions, such as printing and dyeing temperature, printing and dyeing time, solubility ratio, additives, electrolytes and alkali agent addition amounts, etc.

[0033] The temperature change parameter sending unit is the main data transmission unit. One end of the unit is connected to the data control platform to obtain and read the process data in the data control platform and extract the key temperature change parameters (such as printing and dyeing temperature and printing and dyeing time). The other end is connected to the heating control unit to send the acquired key temperature change parameters to it. As a two-way communication unit, the temperature change parameter sending unit has the ability to send and receive wireless data across regions and spaces.

[0034] The temperature change parameter sending unit uses a dual-link redundant transmission method to send key temperature change parameters to the heating control unit. It includes a first sending link, which includes a cloud server connected to the data central control platform and a DTU transmission component connected to the cloud server; the cloud server can convert input data into data under a standard communication protocol through built-in or third-party services, such as API gateways, message queues, etc. These services can help the cloud server communicate with different clients, applications or services to ensure accurate data transmission and interoperability. In the present invention, the first sending link is suitable for large-scale wireless control scenarios. The cloud server extracts key temperature change parameters and converts the data into data under a standard communication protocol. The DTU transmission component completes the data sending, wherein the standard communication protocol includes but is not limited to MODBUS, PROFIBUS, PROFIBUS, profinet, HART, CAN, BAcnet, zigbee and OPC. The DTU transmission component is connected to the heating control unit to achieve two-way transparent transmission of data.

[0035] The heating control unit is used to calculate and obtain a process curve according to the received key temperature change parameters, and send the process curve to the combustion heater. As a logical control unit, the heating control unit bears the task of receiving parameters and issuing commands. When it receives the key temperature change parameters sent by the temperature change parameter issuing unit, it will process them into a process curve according to the preset program. The process curve is usually developed with time as the axis, which contains temperature information that changes continuously with time. This information is non-discrete and has high linearity; it also carries specific information such as process numbers, so that the corresponding combustion heater can be accurately identified and used in the subsequent process. For example, in a simple heating control, the key temperature change parameters are a series of time points and corresponding temperature values. The heating control unit is based on multiple key points given by the user, such as the set temperature at the starting point of the time is 24°C, and the next time point, such as 8 minutes, is set to 105°C, and it needs to be maintained until the next time point, such as after an interval of 10 minutes, and then dropped to 75°C for 10 minutes. The heating control unit needs to calculate the above discrete temperature correspondence and obtain a continuous process curve, so that the combustion heater can adjust the power according to this process curve to ensure that the temperature changes according to the predetermined path. The calculation method uses cubic spline interpolation to ensure the smoothness of the process curve and the continuity of the second-order derivative as much as possible, so that when the combustion heater is adjusted, the temperature will not change suddenly to ensure the perfect adhesion of the dyeing material. In addition, for the production workshop computing center responsible for running the heating control unit, if its computing power is weak, it can also use an interpolation method with less calculation, such as linear interpolation; or use the lookup table comparison method to obtain the process curve.

[0036] As an actuator, the combustion heater is directly responsible for heating the dye vat. By changing its output load, it can be infinitely adjusted, but its output load curve needs to follow the process curve, that is, after the combustion heater receives the process curve sent by the heating control unit, it will use the process curve as the tracking target, so that the output load curve always follows, thereby realizing continuous temperature control of the dye vat temperature. The output load curve is realized by adjusting the combustion parameters of the combustion heater, which include operating status (power parameters), process number, current working step target temperature, current working step temperature rise rate, current working step insulation time, etc.

[0037] The automatic control system of the dye vat heating device also includes a load control unit, which includes a load percentage input terminal and an analog input circuit connected to the load percentage input terminal and used to convert load percentage data into analog data; the analog input circuit is also connected to the heating control unit.

[0038] In addition, the heating control unit is also connected to the load control unit. The load control unit is responsible for sending the dye vat load percentage signal to the heating control unit as a parallel control means, because the process curve sent by the heating control unit to the combustion heater cannot fully respond to various sudden faults. When the dye vat load has exceeded the warning load, if the combustion heater still works according to the original process curve, it may cause major safety accidents such as overheating and burning. Therefore, a parallel control means is reserved to send the dye vat load percentage signal to the heating control unit through the load control unit as insurance; for example, when the current load value indicated by the load percentage signal has exceeded the safety load threshold (for example, the current load 95%> the safety load threshold 92%), the combustion heater will take operations including but not limited to shutdown and power reduction. The analog input circuit is responsible for processing the dye vat load percentage signal into an analog quantity that is easy for the heating control unit to calculate and analyze.

[0039] In addition to the load control unit, the heating control unit is also connected to the switch control unit, which includes a two-dimensional switch input terminal and a switch input circuit connected to the two-dimensional switch input terminal; the switch input circuit is also connected to the heating control unit. Specifically, in order to enable the production equipment using the automatic control system of the dye vat heating device to be backward compatible to handle the needs of simple printing and dyeing processes while meeting the needs of complex printing and dyeing processes, a switch control unit connected to the heating control unit is specially set up. The switch control unit sends a simple two-dimensional on / off signal to the heating control unit, thereby achieving the purpose of heating control without providing key temperature change parameters of process data. The switch input circuit is used to convert high and low level discrete signals at the two-dimensional switch input terminal into analog signals. The above signals can support manual generation or simple controller generation to meet different production needs.

[0040] Example 2 like Figure 2 As shown, the present invention also provides an automatic control method for a dye vat heating device, characterized in that the method comprises: S01. Input the original on-site production order into the data central control platform and generate process data; the temperature change parameter delivery unit reads the process data in the data central control platform and extracts the key temperature change parameters therein; S02, the temperature change parameter sending unit sends the key temperature change parameters to the heating control unit; the heating control unit calculates and obtains the process curve according to the received key temperature change parameters; S03. The heating control unit sends the process curve to the combustion heater; the combustion heater adjusts the combustion parameters in real time according to the process curve, so that the output load curve changes with the process curve.

[0041] S04. Construct an optimization storage unit, obtain a process curve and an output load curve, optimize and adjust the combustion parameters based on a preset optimization algorithm model, and save the adjustment plan as an optimization template; use the optimization template to automatically match and optimize subsequent combustion parameters.

[0042] Among them, when the temperature change parameter sending unit sends the key temperature change parameters to the heating control unit, a dual-link redundant transmission method is adopted to ensure the safe arrival of data.

[0043] Furthermore, the heating control unit processes the received key temperature variation parameters into a process curve using a cubic spline interpolation method.

[0044] This automatic control method for the dye vat heating device also includes network disconnection alarm and emergency processing steps: the alarm unit detects the network connection status every 10 seconds, and if the network is detected to be disconnected, the alarm is triggered at a fixed time; if the disconnection timing duration exceeds 300 seconds, the locally stored emergency program is started to maintain the safe operation of the combustion heater and retain the data, and upload it to the cloud platform after the network is restored.

[0045] A number of embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An automatic control system for a dye vat heating device, characterized in that: System includes: A data central control platform, wherein the data central control platform stores process data, and the process data is used to guide the combustion heater to perform heating adjustment according to actual process requirements; A temperature change parameter sending unit, the temperature change parameter sending unit is used to read the process data in the data central control platform, extract key temperature change parameters therein, and send the key temperature change parameters to the heating control unit; A heating control unit, the heating control unit is used to calculate a process curve according to the received key temperature change parameters, and send the process curve to the combustion heater; A combustion heater receives the process curve and adjusts combustion parameters in real time according to the process curve, so that an output load curve follows the changes of the process curve.

2. According to claim 1, the automatic control system for dye vat heating device is characterized in that: The automatic control system of the dye vat heating device also includes a load control unit, which includes a load percentage input terminal and an analog input circuit connected to the load percentage input terminal; the analog input circuit is also connected to the heating control unit.

3. According to claim 1, the automatic control system for dye vat heating device is characterized in that: The automatic control system of the dye vat heating device also includes a switch control unit, which includes a two-dimensional switch input end and a switch input circuit connected to the two-dimensional switch input end; the switch input circuit is also connected to the heating control unit.

4. According to claim 1, the automatic control system for dye vat heating device is characterized in that: The temperature change parameter sending unit includes a first sending link, which includes a cloud server connected to the data central control platform and a DTU transmission component connected to the cloud server; the DTU transmission component is connected to the heating control unit.

5. According to claim 1, the automatic control system for dye vat heating device is characterized in that: The temperature change parameter sending unit includes a second sending link, and the second sending link includes an edge gateway server connected to the data central control platform and a standard network communication component connected to the edge gateway server.

6. A method for automatically controlling a dye vat heating device, characterized in that: Methods include: S01. Input the original on-site production order into the data central control platform and generate process data; The temperature variation parameter sending unit reads the process data in the data central control platform and extracts the key temperature variation parameters therein; S02, the temperature change parameter sending unit sends the key temperature change parameter to the heating control unit; the heating control unit calculates and obtains the process curve according to the received key temperature change parameter; S03, the heating control unit sends the process curve to the combustion heater; The combustion heater adjusts the combustion parameters in real time according to the process curve, so that the output load curve follows the changes of the process curve.

7. The automatic control method of a dye vat heating device according to claim 1, characterized in that: In S02, when the temperature variation parameter sending unit sends the key temperature variation parameter to the heating control unit, a dual-link redundant transmission method is used to ensure that the data arrives safely.

8. The automatic control method of a dye vat heating device according to claim 1, characterized in that: In S02, the heating control unit uses a cubic spline interpolation method to process the received key temperature variation parameters into a process curve.

9. The automatic control method of a dye vat heating device according to claim 1, characterized in that: The automatic control method of the dye vat heating device further comprises S04, specifically: S04, constructing an optimization storage unit, obtaining the process curve and the output load curve, optimizing and adjusting the combustion parameters based on a preset optimization algorithm, and saving the adjustment scheme as an optimization template; The optimization template is used to automatically match and optimize subsequent combustion parameters.

10. The automatic control method of a dye vat heating device according to claim 1, characterized in that: This automatic control method for the dye vat heating device also includes network disconnection alarm and emergency processing steps: the alarm unit detects the network connection status every 10 seconds, and if the network is detected to be disconnected, the alarm is triggered at a fixed time; if the timing duration exceeds 300 seconds, the locally stored emergency program is started to maintain the safe operation of the combustion heater and retain the data, and the retained data is uploaded to the cloud management center after the network is restored.

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