Control module for porcelain furnace

Abstract

The utility model discloses a control module for a porcelain baking furnace, and belongs to the technical field of vacuum heating. A control module for a porcelain baking furnace comprises a micro-control unit and a power module, the micro-control unit is electrically connected with a communication module, a vacuum module, an action module and a temperature control module, and the power module is electrically connected with the micro-control unit and a peripheral circuit of the micro-control unit. And the high-precision pressure sensor is combined, so that the monitoring precision of the vacuum pressure is improved. The micro-control unit is electrically connected with the program burning circuit through the SWD interface, programs are integrated, and the program response speed is increased. And through integration of the micro-control unit, the human-computer interaction response speed is improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heating technology, and in particular to a control module for a ceramic furnace. Background Technology

[0002] The ceramic kiln industry is currently in a phase of rapid development, with continuous technological advancements and sustained growth in market demand. In recent years, the ceramic kiln industry has experienced significant technological changes and market demand growth, particularly in the field of ceramic material firing. As core equipment, the development of ceramic kilns is of great importance to promoting the transformation and upgrading of the ceramic industry. The quality of ceramic material firing has also improved accordingly. To better ensure firing quality, in addition to strict heating measures, corresponding solutions are needed for vacuum control, including increasing the accuracy of vacuum pressure sensors, improving program response speed, and achieving real-time acquisition and judgment of vacuum levels.

[0003] Existing control module technology for ceramic kilns has several shortcomings, including slow human-machine interaction response and an inability to promptly perform pre-drying segmented rising and falling. This problem may be caused by hardware connectivity issues; traditional methods separate the motion module and vacuum module, controlling these two modules via communication with a host computer. Utility Model Content

[0004] The purpose of this invention is to solve the problems of low pressure sensor accuracy, slow program response, and slow human-computer interaction response speed in the control modules of ceramic kilns in the prior art, and to propose a control module for ceramic kilns.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A control module for a ceramic furnace includes a microcontroller unit and a power supply module. The microcontroller unit is electrically connected to a communication module, a vacuum module, an action module, and a temperature control module, respectively. The output terminal of the power supply module is electrically connected to the input terminal of the microcontroller unit.

[0007] In some embodiments, the microcontroller unit is electrically connected to the programming circuit via an SWD interface.

[0008] In some embodiments, the output terminal of the power switch in the power module is electrically connected to a reference voltage circuit, the output terminal of the reference voltage circuit is connected to a voltage generation circuit, and the voltage generation circuit is connected to a microcontroller unit through a decoupling capacitor.

[0009] In some embodiments, the microcontroller unit is electrically connected to the TTL-to-communication circuit, voice control circuit, display interface circuit, and indicator light control circuit in the communication module.

[0010] In some embodiments, the microcontroller unit is electrically connected to the vacuum pump control circuit, the solenoid valve interface circuit, and the pressure sensor in the vacuum module, and the vacuum pump is electrically connected to the microcontroller unit via a relay.

[0011] In some embodiments, the microcontroller is electrically connected to the motor power supply switch circuit and the motor direction switching circuit in the action module, the AC transformer is electrically connected to the microcontroller via an ADC, and the motor is electrically connected to the microcontroller via a motor driver.

[0012] In some embodiments, the microcontroller is electrically connected to the heating control circuit, optocoupler, and thermocouple in the temperature control module, and the cooling fan is electrically connected to the microcontroller through the cooling fan interface circuit.

[0013] Compared with the prior art, the present invention provides a control module for a ceramic kiln, which has the following beneficial effects.

[0014] 1. This utility model, through a high-precision pressure sensor, ensures the stable operation of the control module and improves the monitoring accuracy of vacuum pressure.

[0015] 2. This utility model uses a microcontroller unit that is electrically connected to the programming circuit via an SWD interface and integrates the program, thereby improving the program response speed.

[0016] 3. This utility model improves the human-machine interaction response speed by unifying and coordinating the control module through a microcontroller unit, integrating a microcontroller unit, a power supply module, a communication module, a vacuum module, an action module, and a temperature control module.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the control module of this utility model;

[0019] Figure 2 This is a schematic diagram of the microcontroller unit of this utility model;

[0020] Figure 3 This is a schematic diagram of the voltage generation circuit of this utility model;

[0021] Figure 4 This is a schematic diagram of the voice control circuit of this utility model;

[0022] Figure 5 This is a schematic diagram of the vacuum pump control circuit of this utility model;

[0023] Figure 6 This is a schematic diagram of the solenoid valve interface circuit of this utility model;

[0024] Figure 7 This is a circuit diagram of the pressure sensor of this utility model;

[0025] Figure 8 This is a schematic diagram of the motor direction switching circuit of this utility model;

[0026] Figure 9 This is a circuit diagram of the heating control circuit of this utility model.

[0027] In the picture:

[0028] 1. Microcontroller Unit; 2. Power Supply Module; 201. Power Switch; 202. Reference Voltage Circuit; 203. Voltage Generation Circuit; 3. Communication Module; 301. TTL to 485 Communication Circuit; 302. Voice Control Circuit; 303. Display Interface Circuit; 304. Indicator Light Control Circuit; 4. Vacuum Module; 401. Vacuum Pump Control Circuit; 402. Solenoid Valve Interface Circuit; 403. Pressure Sensor Circuit; 404. Relay; 5. Action Module; 501. Motor Power Supply Switch Circuit; 502. Motor Direction Switching Circuit; 503. AC Transformer; 6. Temperature Control Module; 601. Heating Control Circuit; 602. Optocoupler; 603. Thermocouple; 604. Cooling Fan Interface Circuit; 7. SWD Interface; 8. Programming Circuit. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-9 A control module for a ceramic furnace includes a microcontroller unit 1 and a power supply module 2. The microcontroller unit 1 is electrically connected to a communication module 3, a vacuum module 4, an action module 5, and a temperature control module 6, respectively. The output terminal of the power supply module 2 is electrically connected to the input terminal of the microcontroller unit 1.

[0031] In this invention, the microcontroller in the control unit 1 is an STM32F103RCT6 model as the main control unit of the control module. The STM32 microcontroller integrates a reset circuit, crystal oscillator and FLASH. The control unit 1 is electrically connected to the programming circuit 8 through the SWD interface 7 to program and debug the embedded program of the microcontroller and integrate the program. The embedded program of the microcontroller is used for motor control, heating control, vacuum pump control and control of display screen and indicator lights.

[0032] In this invention, the power supply module 2 provides a stable operating voltage for the microcontroller unit 1 to ensure normal operation. The power switch 201 controls the connection of the external power supply. The reference voltage circuit 202 provides a stable reference voltage for power management, ensuring the accuracy and reliability of the control module. The voltage generation circuit 203 uses an LM2576S-5.0 DC-DC power chip to step down the input voltage from 24V to 5V. The voltage generation circuit 203 also uses a TLV1117-33IDCY linear regulator to regulate the input voltage from 5V to 3.3V to stabilize the operating voltage of the microcontroller unit 1. The voltage generation circuit 203 is connected to the microcontroller unit 1 via a decoupling capacitor 9 to reduce power supply noise and improve signal integrity.

[0033] In this invention, the TTL to 485 communication circuit 301 and the microcontroller unit 1 are electrically connected to achieve communication with external devices, providing data exchange and remote control functions; the voice control circuit 302 uses an SC5080B series chip and is electrically connected to the microcontroller unit 1, which receives voice commands and executes corresponding control tasks; the display screen is electrically connected to the microcontroller unit 1 through the display screen interface circuit 303 to display equipment environmental data; the indicator lights are electrically connected to the microcontroller unit 1 through the indicator light control circuit 304, and the flashing and lighting patterns of the indicator lights are controlled by the microcontroller embedded programming to display the operating status of the ceramic furnace.

[0034] In this invention, the vacuum pump is located outside the ceramic furnace and is connected to the furnace cavity through a pipe. The vacuum pump is electrically connected to the microcontroller unit 1 through a relay. The vacuum pump control circuit 401 controls the working state of the vacuum pump, drawing air from the furnace cavity to reduce the atmospheric pressure inside the furnace. The outlet valve and inlet valve of the solenoid valve interface are connected to the gas delivery pipeline. The pressure sensor detects the gas in the cranial cavity. The solenoid valve, in conjunction with the vacuum pump, regulates the furnace cavity pressure through the outlet valve and inlet valve.

[0035] In this invention, during the heating stage of the ceramic furnace, the motor power supply switch circuit 501 is connected to the microcontroller unit 1 to provide power to the motor. The microcontroller unit 1 drives the relay to control the forward and reverse rotation of the motor, ensuring that the processed items are heated evenly. The current signal of the AC transformer 503 is rectified and amplified, and then connected to the microcontroller unit 1 through the ADC pin to measure the current of the heating circuit and monitor the heating power.

[0036] In this invention, a heating element (resistance wire) heats the furnace cavity under vacuum conditions. During heating, signal transmission between control circuits is achieved through an optocoupler 602. A thermocouple 603 measures the internal temperature of the ceramic furnace via the thermoelectric effect and feeds the data back to the microcontroller unit 1 for real-time monitoring. The heating control circuit 601 adjusts the power of the resistance wire to control the heating temperature inside the furnace cavity. After heating is complete, a cooling fan lowers the temperature inside the furnace cavity, and the solenoid valve (air inlet valve) is opened to restore the pressure to normal.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control module for a ceramic firing oven, characterized in that: It includes a microcontroller unit (1) and a power supply module (2). The microcontroller unit (1) is electrically connected to the communication module (3), the vacuum module (4), the action module (5), and the temperature control module (6), respectively. The output terminal of the power supply module (2) is electrically connected to the input terminal of the microcontroller unit (1).

2. The control module for a ceramic firing oven according to claim 1, characterized in that, The microcontroller unit (1) is electrically connected to the programming circuit (8) via the SWD interface (7).

3. The control module for a ceramic firing oven according to claim 1, characterized in that, The output terminal of the power switch (201) in the power module (2) is electrically connected to the reference voltage circuit (202), the output terminal of the reference voltage circuit (202) is connected to the voltage generation circuit (203), and the voltage generation circuit (203) is connected to the microcontroller unit (1) through the decoupling capacitor (9).

4. The control module for a ceramic firing oven according to claim 1, characterized in that, The microcontroller unit (1) is electrically connected to the TTL to 485 communication circuit (301), voice control circuit (302), display screen interface circuit (303) and indicator light control circuit (304) in the communication module (3).

5. A control module for a ceramic firing oven according to claim 1, characterized in that, The microcontroller unit (1) is electrically connected to the vacuum pump control circuit (401), the solenoid valve interface circuit (402) and the pressure sensor (403) in the vacuum module (4). The vacuum pump is electrically connected to the microcontroller unit (1) through a relay (404).

6. A control module for a ceramic firing oven according to claim 1, characterized in that, The microcontroller (1) is electrically connected to the motor power supply switch circuit (501) and the motor direction switching circuit (502) in the action module (5). The AC transformer (503) is electrically connected to the microcontroller (1) through the ADC. The motor is electrically connected to the microcontroller (1) through the motor driver.

7. A control module for a ceramic firing oven according to claim 1, characterized in that, The microcontroller unit (1) is electrically connected to the heating control circuit (601), optocoupler (602) and thermocouple (603) in the temperature control module (6), and the cooling fan is electrically connected to the microcontroller unit (1) through the cooling fan interface circuit (604).

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