Heating method and temperature control system

Abstract

The present application discloses a heating method and a temperature control system, which belongs to the technical field of temperature control systems. The main purpose is to accurately control the temperature of each heating zone in the temperature field to ensure the temperature uniformity of the temperature field and the stable operation of the equipment. The main technical scheme of the present application is: first, the temperature information of each heating zone in the temperature field is obtained in real time by using a temperature acquisition device, and converted into temperature data and transmitted to the central processing unit, and compared and analyzed by its data analysis module; if the absolute value of the temperature data difference between any two heating zones is greater than 1°C, the central processing unit sends an instruction to the temperature control device to switch the corresponding temperature controller from the program control mode to the local control mode, and transmit the corresponding temperature data as the set temperature; in the local control mode, the temperature controller controls the real-time temperature of each heating zone to be the same according to the set temperature and adjustment instructions, so as to achieve uniform temperature of the temperature field; after stabilization, the temperature controller is switched back to the program control mode and operated according to the preset heating curve.

Description

Technical Field

[0001] The present application belongs to the technical field of temperature control systems, and specifically relates to a heating method and a temperature control system. Background Art

[0002] In modern industrial production and many temperature control scenarios, in order to ensure high-precision temperature control effects, the same temperature field is often heated by multiple heating zones in a coordinated manner to ensure that each area in the temperature field can achieve ideal temperature consistency.

[0003] However, in the actual operation of the equipment, especially in the equipment startup phase, the initial states of the various heating zones are not the same, and there are certain temperature differences between them. Furthermore, when the equipment heating process is more than halfway through, an emergency situation occurs and the heating needs to be suspended. When the heating process is restarted after a period of time, the temperature difference between the heating zones is further amplified due to the uneven heat conduction, subtle differences in heat dissipation conditions, and changes in the characteristics of the equipment itself. At this time, if the heating is started according to the normal operation, the uniform set temperature will be transmitted to each temperature control instrument without distinction. However, due to the different degrees of deviation from the uniform set temperature in each area, this directly leads to a sharp increase in the output power of some areas in order to quickly catch up with the set temperature, far exceeding the normal operating level. This abnormal high-power output, on the one hand, seriously destroys the overall temperature uniformity of the temperature field, causing uneven heating of the product in the temperature field, greatly affecting the processing quality and process stability; on the other hand, the heater that is in a high-power output state for a long time is subjected to excessive thermal stress and electrical load, which inevitably has a serious negative impact on its service life. Frequent replacement of heaters not only increases the equipment operation and maintenance costs, but also delays production progress due to downtime and maintenance. Summary of the invention

[0004] In view of this, the present application provides a heating method and a temperature control system, the main purpose of which is to accurately control the temperature of each heating zone in the temperature field to ensure the temperature uniformity of the temperature field and the stable operation of the equipment.

[0005] In order to achieve the above objectives, this application mainly provides the following technical solutions:

[0006] In a first aspect of the present application, a temperature raising method is provided, comprising:

[0007] The temperature information of each heating zone in the temperature field is acquired in real time by using a temperature acquisition device to form a plurality of temperature data, and the plurality of temperature data are transmitted to a central processing unit, and a data analysis module built into the central processing unit is used to compare and analyze the plurality of temperature data acquired in pairs;

[0008] When the central processor determines that there is a difference between the temperature data of any two of the heating zones, and the absolute value of the difference between the temperature data of any two of the heating zones is greater than 1°C, an instruction is issued to the temperature control device to switch the multiple temperature controllers corresponding to each of the heating zones from the currently running program control mode to the local control mode. At the same time, the central processor transmits the collected temperature data of each of the heating zones to the temperature controllers matched therewith as the set temperature of the corresponding temperature controllers;

[0009] In the local control mode, each temperature controller gradually adjusts the set temperature according to the received set temperature and in response to the adjustment instruction issued by the central processor until the real-time temperature data fed back by each heating zone is the same, thereby achieving uniform temperature in the temperature field;

[0010] After the temperature data of each heating zone in the temperature field are the same and stable, the central processing unit again issues instructions to the temperature control device to switch the temperature controllers corresponding to each heating zone from the local control mode back to the program control mode. At this time, each temperature controller performs the heating operation of the corresponding heating zone according to the heating curve preset in the program control mode.

[0011] Optionally, the adjustment instruction issued by the central processing unit includes a first adjustment instruction and a second adjustment instruction, the first adjustment instruction is an operation instruction to freeze the set temperature, the first adjustment instruction is used for the temperature controller corresponding to the heating zone at the first temperature threshold, so that the temperature of the heating zone at the first temperature threshold is maintained stable, and the second adjustment instruction is an operation instruction to increase the set temperature according to a preset gradient, the second adjustment instruction is used for the temperature controller corresponding to the heating zone below the first temperature threshold, so that the temperature of the heating zone below the first temperature threshold gradually rises until the first temperature threshold is reached.

[0012] Optionally, the first temperature threshold is the highest temperature value determined by the central processor when receiving the temperature data from the plurality of heating zones in the temperature field.

[0013] Optionally, the preset gradient is to increase the set temperature of the temperature controller corresponding to the heating zone below the first temperature threshold by 1° C. every 10 seconds.

[0014] Optionally, during the execution of the second adjustment instruction, the temperature data of the heating zone is acquired in real time, and the temperature data is compared with the corresponding set temperature, so that when the absolute value of the difference between the temperature data and the set temperature is greater than 3°C, the set temperature of the heating zone is stopped from being increased until the temperature data is the same as the set temperature, and the operation of increasing the set temperature according to the preset gradient is resumed.

[0015] Optionally, the central processing unit transmits the collected temperature data of each of the heating zones to the corresponding temperature controller respectively, and in the process of setting the temperature of the corresponding temperature controller, obtains the temperature data of each of the heating zones in real time, compares the temperature data with the corresponding set temperature, and controls the temperature of the heating zone based on the comparison result.

[0016] Optionally, when the temperature data is lower than the corresponding set temperature, the temperature of the heating zone is increased.

[0017] Optionally, when the central processing unit compares and analyzes the collected temperature data of each of the heating zones and determines that multiple temperature data are the same, the temperature control device will maintain the current program control mode of the temperature controller corresponding to each of the heating zones unchanged. At this time, each of the temperature controllers directly performs the heating operation of the corresponding heating zone according to the heating curve preset in the program control mode.

[0018] Optionally, when the central processing unit determines that there is a difference in the temperature data of any two of the heating zones, but the absolute value of the difference between the temperature data of any two of the heating zones is less than or equal to 1°C, the temperature control device will also maintain the current program control mode of the temperature controller corresponding to each of the heating zones unchanged. At this time, each of the temperature controllers directly performs the heating operation of the corresponding heating zone according to the heating curve preset in the program control mode.

[0019] A second aspect of the present application provides a temperature control system for executing the steps of any one of the above-mentioned heating methods.

[0020] By means of the above technical solution, the present application has at least the following beneficial effects:

[0021] In an embodiment of the present application, a heating method and a temperature control system are provided, wherein the heating method obtains the temperature information of each heating zone in real time through a temperature acquisition device and converts it into temperature data for transmission to a central processing unit for pairwise comparison and analysis. When there is a temperature difference and the absolute value of the difference is greater than 1°C, each temperature controller is switched to a local control mode, so that each temperature controller uses the temperature data of each heating zone as a set temperature and responds to an adjustment instruction issued by the central processing unit to gradually adjust the temperature of each heating zone until the real-time temperature data of each heating zone is the same, thereby effectively avoiding the problem of destroying the overall temperature uniformity of the temperature field due to temperature differences caused by the initial state of each heating zone or subsequent restart, thereby ensuring uniform temperature in the temperature field. At the same time, after the temperature data of each heating zone in the temperature field are the same and stable, each temperature controller is switched from the local control mode to the program control mode, and each temperature controller performs the heating operation of the corresponding heating zone according to the heating curve preset in the program control mode. Compared with the conventional operation, the heating is directly started according to the heating curve. The situation in which the output power of the heating element rises sharply and far exceeds the normal operating level in order to catch up with the unified target temperature is avoided, thereby reducing the thermal stress and electrical load on the heating element, protecting the heating element, and effectively extending the service life of the heating element, thereby reducing the adverse effects such as increased equipment operation and maintenance costs and delays in production progress due to downtime for maintenance caused by frequent replacement of heating elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a flow chart of a temperature raising method according to an optional embodiment of the present application;

[0023] Figure 2 This is a schematic structural diagram of a temperature control system of an optional embodiment of the present application.

[0024] The reference numerals are:

[0025] 1. Temperature acquisition device; 11. Temperature acquisition unit; 2. Temperature field; 21. Heating zone; 3. Central processing unit; 4. Temperature control device; 41. Temperature controller; 42. Heating power supply; 43. Heater. DETAILED DESCRIPTION

[0026] The present application 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.

[0027] In this embodiment, a heating method is provided. Figure 1 As shown, the method includes:

[0028] Step S101: Use the temperature acquisition device 1 to obtain the temperature information of each heating zone 21 in the temperature field 2 in real time, form a plurality of temperature data, and transmit the plurality of temperature data to the central processing unit 3, and use the built-in data analysis module of the central processing unit 3 to compare and analyze the plurality of temperature data collected in pairs.

[0029] In this embodiment, a temperature acquisition device 1 can be arranged in the temperature field 2 to sense the temperature conditions of each heating zone 21 in real time and accurately. Specifically, the temperature acquisition device 1 can be a plurality of thermocouple sensors or thermistor sensors, which are distributed in different positions of the temperature field 2, corresponding to each heating zone 21. In practical applications, a plurality of thermocouple sensors or thermistor sensors work continuously, continuously capture the temperature information formed by temperature changes, and convert it into temperature data, and then transmit these temperature data to the central processor 3 quickly and stably through a pre-laid signal transmission line, such as a shielded cable or a wireless transmission module, in accordance with an established data transmission protocol. The central processor 3 has a built-in data analysis module, which performs pairwise comparison analysis on the received multiple temperature data from different heating zones 21, and calculates the difference between each temperature data pair by pair, to determine whether the absolute value of the difference is greater than the set threshold value of 1°C.

[0030] Here, through the temperature acquisition device 1 (such as a thermocouple or thermistor sensor), it is possible to accurately capture the subtle temperature changes of each heating zone 21 of the temperature field 2, without missing any potential hidden dangers of uneven temperature. Data is transmitted through a reliable signal transmission line (such as a shielded cable or a wireless transmission module) and an established protocol to ensure the integrity and timeliness of the data, so that the central processor 3 can grasp the overall picture of the temperature field 2 in near real time, providing accurate data for subsequent precise control. The data analysis module in the central processor 3 compares the temperature data of each heating zone 21 and accurately screens out the temperature difference with a threshold of 1°C. This judgment method does not overreact and avoids frequent oscillation adjustments of the system. It can also detect the hidden dangers of imbalance in the temperature field 2 in time, so that it can intervene quickly when the temperature deviation first appears, and seize the opportunity to maintain the uniformity of the temperature field 2, effectively preventing the large imbalance of the temperature field 2 caused by the accumulation of small temperature differences, and ensuring the stability of the temperature environment of the temperature field 2.

[0031] Step S102: When the central processing unit 3 determines that there is a difference in the temperature data of any two heating zones 21, and the absolute value of the difference between the temperature data of any two heating zones 21 is greater than 1°C, an instruction is sent to the temperature control device 4 to switch the multiple temperature controllers 41 corresponding to each heating zone 21 from the currently running program control mode to the local control mode. At the same time, the central processing unit 3 transmits the collected temperature data of each heating zone 21 to the corresponding temperature controller 41 as the set temperature of the corresponding temperature controller 41.

[0032] In this embodiment, the temperature control device 4 includes a plurality of temperature controllers 41 corresponding to the heating zones 21 one by one. When the temperature controller 41 receives the instruction from the central processor 3, it can switch between different control modes. Specifically, when the central processor 3 determines that the temperature difference exceeds the standard, it can issue instructions to the plurality of temperature controllers 41. After receiving the instructions, the plurality of temperature control devices 4 can switch the working mode from the currently running program control mode to the local control mode. At the same time, the central processor 3 processes and matches the temperature data of each heating zone 21 collected previously, and transmits them to the temperature controllers 41 that match them respectively, so that they become the set temperatures of these temperature controllers 41 at this time. At this time, each temperature controller 41 can carry out regulation according to the actual temperature of the corresponding heating zone 21, avoiding overheating or insufficient heating of some areas due to unified setting, making the temperature regulation of each heating zone 21 more targeted, and building a personalized regulation channel to achieve uniform temperature of the temperature field 2.

[0033] Here, the central processor 3 transmits the collected temperature data of each heating zone 21 to the temperature controller 41 that matches it, as the set temperature of the corresponding temperature controller 41. The real-time temperature data of each heating zone 21 is consistent with the set temperature, ensuring that the heating elements (such as the heating power supply 42 and multiple heaters 43 corresponding to the heating zones 21) will not have a large power output, thereby avoiding a series of negative effects caused by a sudden increase in power. On the one hand, it effectively prevents the heating elements from accelerating aging and damage due to long-term overload operation, greatly prolongs the service life of the heating elements, reduces the manpower, material resources and downtime consumed by frequent replacement of heating elements, and provides a strong guarantee for continuous production; on the other hand, the stable power output maintains the balance of heat supply in the temperature field 2, making the temperature distribution in the temperature field 2 more uniform and stable, and the heat received by the product during the processing is uniform and consistent, which effectively improves the processing quality and yield rate of the product.

[0034] Step S103: In the local control mode, each temperature controller 41 gradually adjusts the set temperature according to the received set temperature and in response to the adjustment instruction issued by the central processor 3 until the real-time temperature data fed back by each heating zone 21 are the same, thereby achieving uniform temperature in the temperature field 2.

[0035] In this embodiment, each temperature controller 41 pays attention to the real-time temperature feedback of its own heating zone 21 at all times according to the set temperature received from the central processor 3, and responds to the adjustment instruction issued by the central processor 3, and gradually adjusts the set temperature by adjusting the power output of the heating element (such as the heating power supply 42 and multiple heaters 43 corresponding to the heating zone 21). In this process, the temperature controller 41 constantly compares the real-time temperature with the set temperature, and continuously fine-tunes until the real-time temperature data fed back by each heating zone 21 are the same, successfully achieving the goal of uniform temperature in the temperature field 2, and ensuring that the temperature at each location in the temperature field 2 is in an ideal consistency state.

[0036] Step S104: After the temperature data of each heating zone 21 in the temperature field 2 are the same and stable, the central processing unit 3 again issues instructions to the temperature control device 4 to switch the temperature controllers 41 corresponding to each heating zone 21 from the local control mode back to the program control mode. At this time, each temperature controller 41 performs the heating operation of the corresponding heating zone 21 according to the heating curve preset in the program control mode.

[0037] In this embodiment, when the temperature data of each heating zone 21 in the temperature field 2 is the same and stable, it means that the temperature field 2 has reached a good initial equilibrium state. At this time, the central processor 3 plays a commanding role again, and issues instructions to the temperature control device 4 to switch the temperature controller 41 corresponding to each heating zone 21 from the local control mode back to the program control mode. After the switch is completed, each temperature controller 41 performs the heating operation of the corresponding heating zone 21 according to the heating curve preset in the program control mode. Here, the heating curve is carefully formulated at the beginning of the equipment design based on comprehensive considerations of multiple factors such as product processing technology requirements, temperature field 2 characteristics, and energy utilization efficiency. It can ensure that in the subsequent heating process, the temperature field 2 not only maintains uniformity, but also meets production needs according to a predetermined rhythm, and ensures the efficient and stable operation of the entire production process.

[0038] By applying the technical solution of the present embodiment, the temperature information of each heating zone 21 is obtained in real time by using the temperature acquisition device 1 and converted into temperature data for transmission to the central processing unit 3 for pairwise comparison analysis. When there is a temperature difference and the absolute value of the difference is greater than 1°C, each temperature controller 41 is switched to the local control mode, so that each temperature controller 41 uses the temperature data of each heating zone 21 as the set temperature and responds to the adjustment instruction issued by the central processing unit 3 to gradually adjust the temperature of each heating zone 21 until the real-time temperature data of each heating zone 21 is the same, effectively avoiding the problem of destroying the overall temperature uniformity of the temperature field 2 due to temperature differences caused by the initial state of each heating zone 21 or subsequent restart, thereby ensuring the temperature uniformity in the temperature field 2. At the same time, after the temperature data of each heating zone 21 in the temperature field 2 are the same and stable, each temperature controller 41 is switched from the local control mode to the program control mode, and each temperature controller 41 performs the heating operation of the corresponding heating zone 21 according to the heating curve preset in the program control mode. Compared with directly starting the heating according to the heating curve under conventional operation, it avoids the situation where the output power of the heating element may rise sharply and far exceed the normal operating level in order to catch up with the unified target temperature, thereby reducing the thermal stress and electrical load on the heating element, protecting the heating element, and effectively extending the service life of the heating element, thereby reducing the adverse effects such as increased equipment operation and maintenance costs and delays in production progress due to downtime for maintenance caused by frequent replacement of heating elements.

[0039] In some possible embodiments disclosed in the present application, the adjustment instructions issued by the central processing unit 3 include a first adjustment instruction and a second adjustment instruction. The first adjustment instruction is an operation instruction for freezing the set temperature. The first adjustment instruction is used for the temperature controller 41 corresponding to the heating zone 21 at the first temperature threshold, so that the temperature of the heating zone 21 at the first temperature threshold is maintained stable. The second adjustment instruction is an operation instruction for increasing the set temperature according to a preset gradient. The second adjustment instruction is used for the temperature controller 41 corresponding to the heating zone 21 below the first temperature threshold, so that the temperature of the heating zone 21 below the first temperature threshold gradually rises until the first temperature threshold is reached.

[0040] In this embodiment, through the first adjustment instruction, the temperature controller 41 corresponding to the heating zone 21 at the first temperature threshold performs the operation of freezing the set temperature, so that the temperature of the heating zone 21 can be maintained in a relatively stable state, avoiding interference due to changes in the temperature of other heating zones 21. Through the second adjustment instruction, the temperature controller 41 corresponding to the heating zone 21 below the first temperature threshold is allowed to increase the set temperature according to a preset gradient, so that these heating zones 21 with lower temperatures can gradually increase the temperature in a planned and step-by-step manner, rather than blindly and quickly increasing the temperature, thereby efficiently making the temperatures of each heating zone 21 tend to be consistent, and accelerating the process of the entire temperature field 2 reaching a uniform temperature.

[0041] The first adjustment instruction is an operation instruction for controlling the temperature, and the specific content is freezing the set temperature. That is, when the temperature controller 41 receives this instruction, the temperature controller 41 will stop the operation of changing the set temperature.

[0042] The second adjustment instruction is an operation instruction to increase the set temperature according to a preset gradient. Here, the preset gradient is a pre-set rule for temperature rise, for example, the temperature rises by a certain degree (such as 2°C) every certain time (such as 1 minute). In practical applications, the instruction is sent to the temperature controller 41 corresponding to the heating zone 21 that is below the first temperature threshold, in order to enable the temperature of these heating zones 21 with lower temperatures to gradually rise according to the preset rule.

[0043] In the above embodiment, the first temperature threshold is the highest temperature value determined by the central processor 3 when receiving temperature data from multiple heating zones 21 in the temperature field 2.

[0044] In this embodiment, the CPU 3 sets the highest temperature value in the received temperature data of the temperature field 2 as the first temperature threshold, and adjusts the set temperature of the temperature controller 41 corresponding to the heating zone 21 below the threshold in a targeted manner at specific time intervals, so that the low temperature zone is heated slowly, and the high temperature zone reaching the threshold is suspended from heating until the temperature of each heating zone 21 is consistent. On this basis, the preset heating curve is started, thereby achieving the purpose of uniform startup, which can effectively avoid the adverse effects of the high power output of the heating element on the uniformity of the temperature field 2.

[0045] In the above embodiment, the preset gradient is to increase the set temperature of the temperature controller 41 corresponding to the heating zone 21 below the first temperature threshold by 1° C. every 10 seconds.

[0046] In this embodiment, according to the preset gradient, the heating zone 21 below the first temperature threshold can gradually approach the maximum temperature in a relatively stable and efficient manner. The increase rate of 1°C per 10 seconds is neither too slow to cause a long temperature balancing time, nor too fast to destroy the stability of the temperature field 2.

[0047] In the above embodiment, during the execution of the second adjustment instruction, the temperature data of the heating zone 21 is obtained in real time, and the temperature data is compared with the corresponding set temperature, so that when the absolute value of the difference between the temperature data and the set temperature is greater than 3°C, the set temperature of the heating zone 21 is stopped from being increased until the temperature data is the same as the set temperature, and the operation of increasing the set temperature according to the preset gradient is resumed.

[0048] In this embodiment, when the actual temperature deviates greatly from the set temperature, the set temperature is temporarily raised until the two are the same and then the preset gradient is restored. Thus, large temperature fluctuations caused by continuous temperature rise can be avoided, and the temperature of the temperature field 2 can be kept relatively stable.

[0049] In some possible embodiments disclosed in the present application, the central processing unit 3 transmits the collected temperature data of each heating zone 21 to a corresponding temperature controller 41 respectively, and in the process of setting the temperature of the corresponding temperature controller 41, the temperature data of each heating zone 21 is obtained in real time, and the temperature data is compared with the corresponding set temperature, and the temperature of the heating zone 21 is controlled based on the comparison result.

[0050] In this embodiment, the temperature data of each heating zone 21 is compared with the set temperature in real time, and the temperature of each heating zone 21 is controlled based on the result, which can effectively reduce the deviation between the actual temperature and the set temperature and help maintain the temperature stability of the temperature field 2.

[0051] In the above embodiment, when the temperature data is lower than the corresponding set temperature, the temperature of the heating area 21 is increased.

[0052] In this embodiment, when the temperature data is lower than the set temperature, the temperature of the heating zone 21 is increased. This is a direct temperature compensation mechanism, which can ensure that the temperature of the heating zone 21 rises accurately toward the set temperature, so that the actual temperature gradually approaches and eventually reaches the set temperature. It should be noted that compared with compensatory heating after the temperature deviation is too large due to untimely temperature adjustment, this method of increasing the temperature when the temperature is slightly lower can avoid overheating. If the temperature deviation is too large, in order to quickly return to the set temperature, it may be necessary to significantly increase the heating power, which will result in a waste of energy and uneven temperature distribution of the temperature field 2. By increasing the temperature slightly in a timely manner, it is possible to more reasonably utilize energy, reduce energy consumption, and maintain the temperature stability of the temperature field 2 while ensuring that the temperature returns to normal.

[0053] In some possible embodiments disclosed in the present application, when the central processor 3 compares and analyzes the collected temperature data of each heating zone 21 and determines that multiple temperature data are the same, the temperature control device 4 will maintain the current program control mode of the temperature controller 41 corresponding to each heating zone 21 unchanged. At this time, each temperature controller 41 directly performs the heating operation of the corresponding heating zone 21 according to the heating curve preset in the program control mode.

[0054] In this embodiment, when the temperature data is the same, the program control mode is maintained unchanged, avoiding the occupation of the central processor 3 resources and communication resources due to frequent switching of the control mode, so that the system can use more resources for other important monitoring and control tasks, such as real-time data storage, abnormal situation alarm, etc.

[0055] In some possible embodiments disclosed in the present application, when the central processor 3 determines that there is a difference in the temperature data of any two heating zones 21, but the absolute value of the difference between the temperature data of any two heating zones 21 is less than or equal to 1°C, the temperature control device 4 will also maintain the current program control mode of the temperature controller 41 corresponding to each heating zone 21 unchanged. At this time, each temperature controller 41 directly performs the heating operation of the corresponding heating zone 21 according to the heating curve preset in the program control mode.

[0056] In this embodiment, when the absolute value of the temperature difference is less than or equal to 1°C, the impact of such a small temperature difference on product quality and production process in many industrial temperature field 2 environments is acceptable. At this time, the program control mode is maintained unchanged, which can avoid frequent switching of control modes and resetting of temperatures, simplify the control logic of the system, and make the system easier to understand, maintain and manage.

[0057] Further, as Figure 1 The specific implementation of the heating method shown in the figure, the embodiment of the present application provides a temperature control system, see Figure 2As shown, the system includes a temperature acquisition device 1, a temperature field 2, a central processing unit 3 and a temperature control device 4. The temperature field 2 can be a heat preservation furnace body, and the heat preservation furnace body is divided into a plurality of heating zones 21. The plurality of heating zones 21 are provided with a plurality of temperature acquisition units 11 one by one, and the plurality of temperature acquisition units 11 can be thermocouples. Specifically, the plurality of temperature acquisition units 11 constitute the temperature acquisition device 1, and the temperature acquisition device 1 can obtain the temperature information of each heating zone 21 in the temperature field 2 in real time, accurately and uninterruptedly, and convert the temperature information into temperature data for subsequent processing, and then transmit the plurality of temperature data to the central processing unit 3. The central processing unit 3 has a built-in data analysis module. When the central processing unit 3 receives a plurality of temperature data from the temperature acquisition device 1, it starts a pairwise comparison analysis algorithm to determine whether there is a difference in the temperature data of any two heating zones 21, and whether the absolute value of the difference between the temperature data of any two heating zones 21 is greater than 1°C, and then sends various instructions to the temperature control device 4 according to the judgment result. The temperature control device 4 includes a plurality of temperature controllers 41 corresponding to the heating zones 21. When the temperature controller 41 receives instructions from the central processor 3, it can switch between different control modes. For example, in the initial program control mode, the heating zone 21 is stably driven to heat up according to the preset heating curve; and when the system determines that local precise control is required, it can quickly switch to the local control mode, receive the temperature data of the specific heating zone 21 transmitted by the central processor 3 as the set temperature, and operate finely in strict accordance with the adjustment instructions to ensure that the temperature of the heating zone 21 is gradually adjusted to the ideal state, and finally achieve the uniform and precise control of the temperature of the temperature field 2 as a whole. In addition, the temperature control device 4 also includes a heating power supply 42 and a plurality of heaters 43 corresponding to the heating zones 21. The heating power supply 42 is used to provide adaptive electrical energy for the plurality of heaters 43. The heating power supply 42 has a plurality of independent controllers corresponding to the heaters 43, which can quickly and accurately adjust the corresponding output voltage and current according to the instructions issued by the central processor 3 via the temperature controller 41. The heaters 43 corresponding to the heaters 43 are used to convert electrical energy into thermal energy, slowly and accurately increase the temperature of the area, and ensure that every tiny corner of the temperature field 2 can be evenly heated. In actual application, when the insulation furnace body is first started to heat, the temperature acquisition device 1 is immediately activated, and the initial temperature of each heating zone 21 is collected through the thermocouple and transmitted to the central processor 3.The CPU 3 compares the initial temperature data and instructs the temperature control device 4 to start the heating operation according to the heating curve if the initial temperatures of the heating zones 21 are the same or if there are differences in the initial temperatures of the heating zones 21 but the difference is less than or equal to 1°C. At this time, the heating power supply 42 supplies energy steadily and the heater 43 generates heat in an orderly manner. If there are differences in the initial temperatures of the heating zones 21 and the absolute value of the difference is greater than 1°C, an instruction is issued to the temperature control device 4 to switch the multiple temperature controllers 41 corresponding to the heating zones 21 from the currently running program control mode to the local control mode. At the same time, the CPU 3 transmits the collected temperature data of each heating zone 21 to the corresponding ones. The temperature controller 41 serves as the set temperature of the corresponding temperature controller 41. Then, in the local control mode, each temperature controller 41 gradually adjusts the set temperature based on the received set temperature and in response to the adjustment instruction issued by the central processing unit 3 until the real-time temperature data fed back by each heating zone 21 are the same, thereby achieving uniform temperature in the temperature field 2. Finally, after the temperature data of each heating zone 21 in the temperature field 2 are the same and stable, the central processing unit 3 again issues an instruction to the temperature control device 4 to switch the temperature controllers 41 corresponding to each heating zone 21 from the local control mode back to the program control mode. At this time, each temperature controller 41 performs the heating operation of the corresponding heating zone 21 according to the heating curve preset in the program control mode. Similarly, when the heating process encounters complex and changeable situations such as power outages, equipment failures, and the need to suspend heating for a period of time and then restart, or temporary adjustments to process parameters, the central processing unit 3 will re-compare and analyze the latest temperature data re-collected by the temperature acquisition device 1, and then issue instructions based on the comparison and analysis results to switch the control mode to ensure that the temperature field 2 always maintains an accurate and uniform temperature state in a dynamically changing environment, thereby ensuring the smooth implementation of the production process and the stable output of product quality.

[0058] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0059] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A heating method, characterized in that: include: Using a temperature acquisition device (1) to acquire temperature information of each heating zone (21) in a temperature field (2) in real time to generate a plurality of temperature data, and transmitting the plurality of temperature data to a central processing unit (3), and performing pairwise comparison and analysis on the plurality of temperature data acquired through a data analysis module built into the central processing unit (3); When the central processor (3) determines that there is a difference between the temperature data of any two heating zones (21), and the absolute value of the difference between the temperature data of any two heating zones (21) is greater than 1°C, an instruction is sent to the temperature control device (4) to switch the multiple temperature controllers (41) corresponding to the respective heating zones (21) from the currently running program control mode to the local control mode. At the same time, the central processor (3) transmits the collected temperature data of the respective heating zones (21) to the temperature controllers (41) corresponding thereto as the set temperatures of the corresponding temperature controllers (41); In the local control mode, each of the temperature controllers (41) gradually adjusts the set temperature according to the received set temperature and in response to the adjustment instruction issued by the central processor (3), until the real-time temperature data fed back by each of the heating zones (21) are the same, thereby achieving a uniform temperature in the temperature field (2); After the temperature data of each heating zone (21) in the temperature field (2) are identical and stable, the central processor (3) again issues instructions to the temperature control device (4) to switch the temperature controller (41) corresponding to each heating zone (21) from the local control mode back to the program control mode. At this time, each temperature controller (41) performs a temperature increase operation of the corresponding heating zone (21) according to a temperature increase curve preset in the program control mode; The adjustment instruction issued by the central processing unit (3) comprises a first adjustment instruction and a second adjustment instruction, wherein the first adjustment instruction is an operation instruction for freezing the set temperature, and the first adjustment instruction is used for the temperature controller (41) corresponding to the heating zone (21) at a first temperature threshold, so that the temperature of the heating zone (21) at the first temperature threshold is maintained stable, and the second adjustment instruction is an operation instruction for increasing the set temperature according to a preset gradient, and the second adjustment instruction is used for the temperature controller (41) corresponding to the heating zone (21) at a temperature lower than the first temperature threshold, so that the temperature of the heating zone (21) at a temperature lower than the first temperature threshold is gradually increased until the first temperature threshold is reached; The first temperature threshold is the highest temperature value determined by the central processor (3) when receiving the temperature data from the plurality of heating zones (21) in the temperature field (2).

2. The heating method according to claim 1, characterized in that: The preset gradient is to increase the set temperature of the temperature controller (41) corresponding to the heating zone (21) below the first temperature threshold by 1° C. every 10 seconds.

3. The heating method according to claim 1, characterized in that: In the process of executing the second adjustment instruction, the temperature data of the heating zone (21) is obtained in real time, and the temperature data is compared with the corresponding set temperature, so that when the absolute value of the difference between the temperature data and the set temperature is greater than 3°C, the set temperature of the heating zone (21) is stopped from being increased until the temperature data is the same as the set temperature, and the operation of increasing the set temperature according to the preset gradient is resumed.

4. The heating method according to claim 1, characterized in that: The central processing unit (3) transmits the collected temperature data of each heating zone (21) to the temperature controller (41) matched thereto respectively, and in the process of setting the temperature of the corresponding temperature controller (41), acquires the temperature data of each heating zone (21) in real time, compares the temperature data with the corresponding set temperature, and controls the temperature of the heating zone (21) based on the comparison result.

5. The heating method according to claim 4, characterized in that: When the temperature data is lower than the corresponding set temperature, the temperature of the heating zone (21) is increased.

6. The temperature raising method according to claim 1, characterized in that: When the central processing unit (3) compares and analyzes the collected temperature data of each heating zone (21) and determines that a plurality of the temperature data are the same, the temperature control device (4) maintains the current program control mode of the temperature controller (41) corresponding to each heating zone (21) unchanged. At this time, each temperature controller (41) directly performs the temperature increase operation of the corresponding heating zone (21) according to the temperature increase curve preset in the program control mode.

7. The temperature raising method according to claim 1, characterized in that: When the central processor (3) determines that there is a difference between the temperature data of any two heating zones (21), but the absolute value of the difference between the temperature data of any two heating zones (21) is less than or equal to 1°C, the temperature control device (4) will also maintain the current program control mode of the temperature controller (41) corresponding to each heating zone (21) unchanged. At this time, each temperature controller (41) directly performs the temperature increase operation of the corresponding heating zone (21) according to the temperature increase curve preset in the program control mode.

8. A temperature control system, characterized in that: Used to perform the steps of the heating method described in any one of claims 1 to 7.

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