Electric infrared heating furnace production control system

Abstract

The invention provides an electric infrared heating furnace production control system, and relates to the technical field of industrial heating, the system comprises a heating sheet, a stepping motor, a temperature sensor, an electric power controller, a stepping driver, a temperature control meter and an electric control cabinet, the heating sheet is connected with the electric power controller, and is used for generating a uniform thermal field; the temperature sensor is installed in the heating furnace and used for collecting the temperature in the furnace and transmitting signals to the electric control cabinet and the electric power controller. The electric power controller is also connected with the temperature control meter and is used for receiving a target temperature parameter set by the temperature control meter and adjusting output current and voltage to the heating sheet in combination with feedback data of the temperature sensor; the heating piece is further connected with the stepping motor, the stepping motor is connected with the stepping driver, the stepping driver is connected with the electric control cabinet and used for receiving instructions of the electric control cabinet and driving the stepping motor to adjust the angle and the position of the heating piece, and the quality and the safety of pipeline products can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial heating, and in particular to a production control system of an electric infrared heating furnace. Background Art

[0002] At present, the traditional pipeline heating method is to use a gas heating furnace for combustion heating, which will cause the flame in the gas furnace to be unstable, the temperature cannot be more accurately PID controlled, and the natural gas consumption is large, which increases the production cost and also poses other safety hazards. The most critical problem is that the temperature cannot be automatically adjusted and controlled, and the temperature control cannot meet the process requirements. This results in the glass fiber inside the glass fiber belt pipeline not being able to be better layered and welded, resulting in cracks in the pipeline section and the internal glass fiber layer, and the overall compression test of the pipeline is reduced. These are the main reasons that affect the compressive strength and service life of the pipeline product.

[0003] There is no complete set of electric infrared heating furnace production control system on the market, and the key core technical problems have not been solved. The main technical problems are as follows:

[0004] 1. Traditional gas furnaces cannot accurately control temperature, so that the glass fiber layer of the pipeline cannot be better welded and the pressure resistance is reduced.

[0005] 2. Natural gas poses a safety hazard when it is transported to the workshop, and the cost of natural gas is higher than the total cost of industrial electricity.

[0006] 3. The temperature inside the furnace cannot be accurately collected in the background control room, causing hysteresis in the entire control system.

[0007] 4. The gas pipeline supply pressure is unstable, resulting in incomplete gas combustion. Summary of the invention

[0008] In view of the fact that the infrared heating technology in the prior art has the characteristics of high efficiency and energy saving, it lacks a complete set of control systems, especially in the process of pipe glass fiber welding, the problems of temperature automation regulation, production safety and process standardization have not been solved. The purpose of the present invention is to propose an electric infrared heating furnace production control system, which is used to improve the quality and safety of pipeline products and reduce production costs; achieve precise temperature control through parametric control, thereby optimizing the welding of glass fiber layers and improving the pressure resistance of pipelines; set the process temperature through the electric control cabinet to achieve stable heating of the pipeline by the heating plate, and the temperature sensor and power controller realize real-time feedback and regulation.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] Based on the above-mentioned purpose, the present invention provides a production control system for an electric infrared heating furnace, including a heating plate, a stepper motor, a temperature sensor, a power controller, a stepper driver, a temperature control meter and an electric control cabinet, wherein the heating plate is connected to the power controller to generate a uniform thermal field; the temperature sensor is installed inside the heating furnace to collect the temperature inside the furnace and transmit the signal to the electric control cabinet and the power controller; the power controller is also connected to the temperature control meter to receive the target temperature parameters set by the temperature control meter, and in combination with the feedback data from the temperature sensor, to adjust the output current and voltage to the heating plate; the heating plate is also connected to the stepper motor, the stepper motor is connected to the stepper driver, and the stepper driver is connected to the electric control cabinet to receive instructions from the electric control cabinet and drive the stepper motor to adjust the angle and position of the heating plate.

[0011] As a further solution of the present invention, the heating plate is used as an infrared radiation source, which covers the surface of the pipeline and welds the glass fiber tape by generating a uniform heat field.

[0012] As a further solution of the present invention, the heating plate is a distributed silicon carbide electric infrared heating plate group with a rated power of 5kW / group; it is powered by 24V / 0V multiple independent circuits and PWM driven, and the duty cycle adjustment accuracy is 0.1%.

[0013] As a further solution of the present invention, the temperature sensor collects temperature data in real time and transmits it to the power controller through an analog signal to form a closed-loop control circuit.

[0014] As a further solution of the present invention, the temperature sensor is a platinum resistance temperature sensor array installed on the inner wall of the heating furnace. The platinum resistance temperature sensor array includes at least 8 PT100 sensors with a sampling frequency of ≥100Hz, and is uploaded to the power controller through a data acquisition module.

[0015] As a further solution of the present invention, the power controller is used to receive the target temperature parameters set by the temperature control table, and in combination with the feedback data of the temperature sensor, adjust the output current / voltage to the heating plate through the PID algorithm, with a temperature control error of ≤±1.5°C.

[0016] As a further solution of the present invention, the power controller has a built-in PID algorithm module, and the temperature is precisely controlled by the following steps:

[0017] The temperature control table sets the target temperature value (T_set) and transmits it to the power controller;

[0018] The temperature sensor collects the furnace temperature (T_actual) in real time and inputs it into the power controller through the AD conversion module;

[0019] The PID algorithm calculates the deviation (T_set-T_actual) and outputs a PWM signal to adjust the power of the heater. The response time is ≤3 seconds.

[0020] As a further solution of the present invention, the temperature control meter is integrated on the door surface of the electric control cabinet, and is used to set the process temperature, display the real-time temperature curve, and communicate with the background system through the RS485 / Ethernet interface.

[0021] As a further solution of the present invention, the electric infrared heating furnace production control system also includes current / voltage over-limit protection, temperature anomaly protection and stepper motor fault detection mechanism, wherein:

[0022] Current / voltage over-limit protection: When the output value of the power controller exceeds the preset threshold, the power supply is automatically cut off and an audible and visual alarm is triggered;

[0023] Abnormal temperature protection: If the temperature inside the furnace exceeds the process range of ±5°C, the system will stop heating and send an alarm to the backend server;

[0024] Stepper motor fault detection mechanism: The driver monitors the motor torque and speed in real time, automatically shuts down and generates maintenance instructions when it detects jamming or overload.

[0025] As a further solution of the present invention, the stepper motor is connected to the heating plate through a mechanical arm. When the stepper motor is driven to adjust the angle and position of the heating plate, the pipeline diameter is fed back to the electric control cabinet through a laser ranging sensor to generate corresponding heating plate spacing parameters; the stepper driver controls the motor rotation angle to ensure that the heating plate and the pipeline surface maintain an optimal radiation distance (5-15cm); the heating plate inclination angle can be adjusted within a range of ±30° to meet the uniform heating requirements of the curved parts of the pipeline.

[0026] As a further solution of the present invention, the electric infrared heating furnace production control system also includes a Modbus-RTU protocol communication module built into the electrical control cabinet, which is used to upload temperature, energy consumption and equipment status data to the background server in real time. The background server supports remote configuration of process parameters (temperature curve, heating time) and generates production logs for quality traceability.

[0027] As a further solution of the present invention, the electric infrared heating furnace production control system is integrated with an infrared thermal imager, and performs the following operations:

[0028] Scan the temperature distribution on the pipeline surface in real time, generate a thermal map and compare it with the standard template;

[0029] When uneven welding areas are detected, the heater power or stepper motor position is automatically corrected.

[0030] As a further solution of the present invention, the electric infrared heating furnace production control system supports intermittent heating mode:

[0031] During the pipeline transportation interval (≥30 seconds), the power controller reduces the power of the heating plate to the standby state (10% of the rated power);

[0032] When new pipe entry is detected, the system resumes full power heating within 2 seconds.

[0033] Compared with the prior art, the electric infrared heating furnace production control system proposed by the present invention has the following beneficial effects:

[0034] 1. Improved heating uniformity. The present invention uses a distributed arrangement of silicon carbide electric infrared heating sheets to generate a uniform heat field covering the pipeline surface, effectively improving the uniformity and quality of the welding between the glass fiber tape and the pipeline, thereby improving the pressure resistance and service life of the pipeline.

[0035] 2. Accurate temperature control is achieved. The present invention sets the process temperature through the temperature control meter, the temperature sensor collects real-time temperature data, and the power controller combines the PID algorithm to adjust the power output of the heating plate in real time. The control accuracy reaches ±1.5°C, ensuring the stability and reliability of the temperature during the production process.

[0036] 3. Improved system response speed. The built-in PID algorithm module of the power controller can quickly respond to the deviation between the set temperature of the temperature controller and the actual temperature, adjust the power of the heating plate, and the response time is ≤3 seconds, which greatly improves the dynamic performance and temperature control accuracy of the system.

[0037] 4. Enhanced system safety. The system of the present invention has current / voltage over-limit protection and temperature anomaly protection mechanisms. When the output value of the power controller exceeds the preset threshold or the temperature in the furnace exceeds the process range, the power supply will be automatically cut off and the heating will be suspended. At the same time, an alarm will be pushed to protect the safety of the equipment and operators.

[0038] 5. Improved energy saving effect. The system of the present invention supports intermittent heating mode, which reduces the power of the heating plate to standby state during the pipeline transportation interval, with obvious energy saving effect; when a new pipeline is detected to enter, the system quickly returns to full power heating state, improving production efficiency and reducing unnecessary energy consumption.

[0039] 6. Enhanced system adaptability. In the present invention, the stepper motor adjusts the angle and position of the heating plate through the mechanical arm, and with the data fed back by the laser ranging sensor, it can automatically generate appropriate heating plate spacing parameters and radiation distance, ensuring uniform heating at different pipe diameters and bending parts, and adapting to diversified production needs; an integrated infrared thermal imager scans the temperature distribution on the pipe surface in real time, generates a thermal map for comparison with the standard template, detects uneven welding areas and automatically adjusts the heating parameters, ensuring visualization of the production process and quality monitoring, and further improving product quality.

[0040] These and other aspects of the present application will be more concise and understandable in the following description of the embodiments. It should be understood that the above general description and the following detailed description are only exemplary and explanatory and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following is a brief introduction to the drawings required for use in the exemplary embodiments or related technical descriptions. The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0042] Figure 1 It is a structural block diagram of the electric infrared heating furnace production control system according to an embodiment of the present invention.

[0043] Figure 2 The present invention is a flowchart of a power controller in an electric infrared heating furnace production control system to achieve precise temperature control.

[0044] Figure 3 The present invention is a flowchart of the operation performed by the infrared thermal imager in the electric infrared heating furnace production control system according to the embodiment of the present invention.

[0045] Figure 4 It is a circuit diagram of the main loop of the electric infrared heating furnace production control system according to an embodiment of the present invention.

[0046] Figure 5 It is a circuit diagram of a stepper motor loop in a production control system of an electric infrared heating furnace according to an embodiment of the present invention.

[0047] Figure 6 It is a circuit diagram of the temperature controller loop 1 in the electric infrared heating furnace production control system according to an embodiment of the present invention.

[0048] Figure 7 It is a circuit diagram of the temperature controller loop 2 in the electric infrared heating furnace production control system according to an embodiment of the present invention.

[0049] Figure 8 It is a circuit diagram of the power regulator circuit 1 in the electric infrared heating furnace production control system according to an embodiment of the present invention.

[0050] Fig. 9 It is a circuit diagram of the power regulator loop 2 in the electric infrared heating furnace production control system according to an embodiment of the present invention.

[0051] Fig.10 The present invention is a circuit diagram of a control panel in an electric infrared heating furnace production control system according to an embodiment of the present invention.

[0052] Fig.11 This is a terminal connection diagram of the electric infrared heating furnace production control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0054] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0055] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are intended to distinguish two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, other steps or units inherent to a process, method, system, product or device that includes a series of steps or units.

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0058] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0059] In view of the fact that the infrared heating technology in the prior art has the characteristics of high efficiency and energy saving, but lacks a complete set of control systems, especially in the process of pipe glass fiber welding, the problems of temperature automation regulation, production safety and process standardization have not yet been solved. The present invention proposes an electric infrared heating furnace production control system, which is used to improve the quality and safety of pipeline products and reduce production costs; precise temperature control is achieved through parameterized control, thereby optimizing the welding of glass fiber layers and improving the pressure resistance of pipelines; the process temperature is set through the electric control cabinet 7 to achieve stable heating of the pipeline by the heating plate 1, and the temperature sensor 3 and the power controller 4 realize real-time feedback and regulation.

[0060] See also Figure 1 As shown, an embodiment of the present invention provides an electric infrared heating furnace production control system, including a heating plate 1, a stepper motor 2, a temperature sensor 3, a power controller 4, a stepper driver 5, a temperature control meter 6 and an electric control cabinet 7, wherein the heating plate 1 is connected to the power controller 4 to generate a uniform thermal field; the temperature sensor 3 is installed inside the heating furnace to collect the temperature inside the furnace and transmit the signal to the electric control cabinet 7 and the power controller 4; the power controller 4 is also connected to the temperature control meter 6 to receive the target temperature parameters set by the temperature control meter 6, and in combination with the feedback data of the temperature sensor 3, adjust the output current and voltage to the heating plate 1; the heating plate 1 is also connected to the stepper motor 2, the stepper motor 2 is connected to the stepper driver 5, and the stepper driver 5 is connected to the electric control cabinet 7 to receive instructions from the electric control cabinet 7 and drive the stepper motor 2 to adjust the angle and position of the heating plate 1.

[0061] In this embodiment, the heating plate 1 is used as an infrared radiation source, covering the surface of the pipeline to generate a uniform heat field to weld the glass fiber tape. The heating plate 1 is a group of distributed silicon carbide electric infrared heating plates, with a rated power of 5kW / group; it is powered by 24V / 0V multiple independent channels, uses PWM drive, and has a duty cycle adjustment accuracy of 0.1%.

[0062] In this embodiment, the temperature sensor 3 collects temperature data in real time and transmits it to the power controller 4 through an analog signal to form a closed-loop control loop. The temperature sensor 3 is a platinum resistance temperature sensor 3 array installed on the inner wall of the heating furnace. The platinum resistance temperature sensor 3 array includes at least 8 PT100 sensors with a sampling frequency of ≥100Hz, and is uploaded to the power controller 4 through a data acquisition module.

[0063] In this embodiment, the power controller 4 is used to receive the target temperature parameters set by the temperature control table 6, and in combination with the feedback data of the temperature sensor 3, adjust the output current / voltage to the heating plate 1 through the PID algorithm, and the temperature control error is ≤±1.5°C. Figure 2 As shown, the power controller 4 has a built-in PID algorithm module, which realizes precise temperature control through the following steps:

[0064] Step S101, the temperature control table 6 sets the target temperature value (T_set) and transmits it to the power controller 4;

[0065] Step S102, the temperature sensor 3 collects the temperature in the furnace (T_actual) in real time and inputs it into the power controller 4 through the AD conversion module;

[0066] Step S103, the PID algorithm calculates the deviation (T_set-T_actual), outputs a PWM signal to adjust the power of the heating plate 1, and the response time is ≤3 seconds.

[0067] In this embodiment, the temperature control meter 6 is integrated on the front of the electric control cabinet 7, and is used to set the process temperature, display the real-time temperature curve, and communicate with the background system through the RS485 / Ethernet interface.

[0068] In this embodiment, the electric infrared heating furnace production control system also includes current / voltage over-limit protection, temperature anomaly protection and stepper motor 2 fault detection mechanism, wherein:

[0069] Current / voltage over-limit protection: When the output value of the power controller 4 exceeds the preset threshold, the power supply is automatically cut off and an audible and visual alarm is triggered;

[0070] Abnormal temperature protection: If the temperature inside the furnace exceeds the process range of ±5°C, the system will stop heating and send an alarm to the backend server;

[0071] Stepper motor 2 fault detection mechanism: The driver monitors the motor torque and speed in real time, automatically shuts down and generates maintenance instructions when it detects jamming or overload.

[0072] In this embodiment, the stepper motor 2 is connected to the heating plate 1 through a mechanical arm. When the stepper motor 2 is driven to adjust the angle and position of the heating plate 1, the pipeline diameter is fed back to the electric control cabinet 7 through the laser ranging sensor to generate the corresponding spacing parameters of the heating plate 1; the stepper driver 5 controls the motor rotation angle to ensure that the heating plate 1 maintains an optimal radiation distance of 5-15cm with the pipeline surface; the adjustable range of the inclination angle of the heating plate 1 is ±30°, which meets the uniform heating requirements of the curved parts of the pipeline.

[0073] In this embodiment, the electric infrared heating furnace production control system also includes a Modbus-RTU protocol communication module built into the electrical control cabinet 7, which is used to upload temperature, energy consumption and equipment status data to the background server in real time. The background server supports remote configuration of process parameters (temperature curve, heating time) and generates production logs for quality traceability.

[0074] In this embodiment, see Figure 3 As shown, the electric infrared heating furnace production control system is integrated with an infrared thermal imager, and performs the following operations:

[0075] Step S201, real-time scanning of the temperature distribution on the pipeline surface, generating a thermal map and comparing it with a standard template;

[0076] Step S202: When an uneven welding area is detected, the power of the heating plate 1 or the position of the stepper motor 2 is automatically corrected.

[0077] In this embodiment, the electric infrared heating furnace production control system supports intermittent heating mode:

[0078] During the pipeline transportation interval (≥30 seconds), the power controller 4 reduces the power of the heating plate 1 to the standby state (10% of the rated power);

[0079] When new pipe entry is detected, the system resumes full power heating within 2 seconds.

[0080] The circuit principle of the electric infrared heating furnace production control system of the present invention can be found in Figures 4 to 11 As shown, by using a distributed arrangement of silicon carbide electric infrared heating plates 1, a uniform heat field can be generated to cover the surface of the pipeline, which solves the problem of precise temperature control, enables the glass fiber layer of the pipeline to be better welded, improves the pressure resistance of the pipeline, and effectively improves the uniformity and quality of the welding of the glass fiber tape and the pipeline, thereby improving the pressure resistance and service life of the pipeline; the process temperature is set by the temperature control table 6, the temperature sensor 3 collects real-time temperature data, and the power controller 4 combines the PID algorithm to adjust the power output of the heating plate 1 in real time, and the control accuracy reaches ±1.5°C, which solves the safety hazards of the production site and reduces the production cost, and ensures the stability and reliability of the temperature during the production process.

[0081] The electric infrared heating furnace production control system of the present invention can also quickly respond to the deviation between the set temperature of the temperature control table 6 and the actual temperature through the built-in PID algorithm module of the power controller 4, adjust the power of the heating plate 1, and the response time is ≤3 seconds, which greatly improves the dynamic performance and temperature control accuracy of the system. The system of the present invention has current / voltage over-limit protection and temperature anomaly protection mechanisms. When the output value of the power controller 4 exceeds the preset threshold or the temperature in the furnace exceeds the process range, it will automatically cut off the power supply and suspend heating, and push an alarm to protect the safety of equipment and operators. It supports intermittent heating mode, reduces the power of the heating plate 1 to the standby state during the pipeline transportation interval, and has obvious energy-saving effects; when a new pipeline is detected to enter, the system quickly returns to the full-power heating state, improves production efficiency and reduces unnecessary energy consumption.

[0082] In the production control system of the electric infrared heating furnace of the present invention, the stepper motor 2 adjusts the angle and position of the heating plate 1 through the mechanical arm, and cooperates with the data fed back by the laser ranging sensor to automatically generate appropriate spacing parameters and radiation distances of the heating plate 1, ensuring uniform heating at different pipe diameters and bending parts, and adapting to diversified production needs; an integrated infrared thermal imager scans the temperature distribution on the pipe surface in real time, generates a thermal map for comparison with the standard template, detects uneven welding areas and automatically adjusts the heating parameters, so as to quantify and standardize the production process, ensure visualization and quality monitoring of the production process, and further improve product quality.

[0083] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope disclosed in the embodiments of the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0084] It should be understood that, as used herein, the singular form "a" or "an" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the items listed in association. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments.

[0085] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. An electric infrared heating furnace production control system, characterized in that: Including heating plate, stepper motor, temperature sensor, power controller, stepper driver, temperature control meter and electric control cabinet; The heating plate is connected to the power controller to generate a uniform thermal field; the temperature sensor is installed inside the heating furnace to collect the temperature inside the furnace and transmit the signal to the electric control cabinet and the power controller; the power controller is also connected to the temperature control meter to receive the target temperature parameters set by the temperature control meter, and adjust the output current and voltage to the heating plate in combination with the feedback data from the temperature sensor; the heating plate is also connected to the stepper motor, the stepper motor is connected to the stepper driver, and the stepper driver is connected to the electric control cabinet to receive instructions from the electric control cabinet and drive the stepper motor to adjust the angle and position of the heating plate.

2. The electric infrared heating furnace production control system according to claim 1, characterized in that: The heating plate is used as an infrared radiation source, covers the surface of the pipeline and generates a uniform heat field to weld the glass fiber tape.

3. The electric infrared heating furnace production control system according to claim 2, characterized in that: The heating plate is a distributed arrangement of silicon carbide electric infrared heating plate group, with a rated power of 5kW / group; it is powered by 24V / 0V multiple independent channels, adopts PWM drive, and has a duty cycle adjustment accuracy of 0.1%.

4. The electric infrared heating furnace production control system according to claim 1, characterized in that: The temperature sensor collects temperature data in real time and transmits the data to the power controller via an analog signal to form a closed-loop control circuit.

5. The electric infrared heating furnace production control system according to claim 4, characterized in that: The temperature sensor is a platinum resistance temperature sensor array installed on the inner wall of the heating furnace. The platinum resistance temperature sensor array includes at least 8 PT100 sensors with a sampling frequency of ≥100 Hz, and is uploaded to the power controller through a data acquisition module.

6. The electric infrared heating furnace production control system according to claim 1, characterized in that: The power controller is used to receive the target temperature parameters set by the temperature control table, and in combination with the feedback data of the temperature sensor, adjust the output current / voltage to the heating plate through the PID algorithm, with a temperature control error of ≤±1.5°C.

7. The electric infrared heating furnace production control system according to claim 6, characterized in that: The power controller has a built-in PID algorithm module, which can achieve precise temperature control through the following steps: The temperature control meter sets the target temperature value and transmits it to the power controller; The temperature sensor collects the temperature in the furnace in real time and inputs it into the power controller through the AD conversion module; The PID algorithm calculates the deviation and outputs a PWM signal to adjust the power of the heater, with a response time of ≤3 seconds.

8. The electric infrared heating furnace production control system according to claim 1, characterized in that: The temperature control meter is integrated on the front of the electric control cabinet, and is used to set the process temperature, display the real-time temperature curve, and communicate with the background system through the RS485 / Ethernet interface.

9. The electric infrared heating furnace production control system according to claim 8, characterized in that: The electric infrared heating furnace production control system also includes current / voltage over-limit protection, temperature anomaly protection and stepper motor fault detection mechanism, wherein: Current / voltage over-limit protection: When the output value of the power controller exceeds the preset threshold, the power supply is automatically cut off and an audible and visual alarm is triggered; Abnormal temperature protection: If the temperature inside the furnace exceeds the process range of ±5°C, the system will stop heating and send an alarm to the backend server; Stepper motor fault detection mechanism: The driver monitors the motor torque and speed in real time, automatically shuts down and generates maintenance instructions when it detects jamming or overload.

10. The electric infrared heating furnace production control system according to claim 1, characterized in that: The stepper motor is connected to the heating plate through a mechanical arm. When the stepper motor is driven to adjust the angle and position of the heating plate, the pipeline diameter is fed back to the electric control cabinet through the laser ranging sensor to generate the corresponding heating plate spacing parameters; the stepper driver controls the motor rotation angle; the adjustable range of the heating plate inclination angle is ±30°.

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