Intelligent temperature controller for digital product maintenance workbench

Abstract

The utility model discloses an intelligent temperature controller for a digital product maintenance workbench. Comprising a shell and a control module, the shell comprises a panel and a rear cover, the panel and the rear cover are detachably connected, and a key groove and a display groove are formed in the panel; the control module comprises a circuit board, the circuit board is fixed in a containing cavity jointly defined by the panel and the rear cover, the circuit board comprises a voltage judgment unit, a power conversion unit, a key unit, a display unit and a main control unit, and the voltage judgment unit, the power conversion unit, the key unit and the display unit are all electrically connected with the main control unit. A silicon controlled rectifier unit is further arranged on the circuit board and electrically connected with the main control unit, and the temperature controller is connected with the heating unit through the silicon controlled rectifier unit. By utilizing the characteristic that the silicon controlled rectifier generates current change along with the temperature change, the temperature regulation of the temperature controller is accurately controlled, the element loss for regulation is reduced, the regulation accuracy is improved, and the service life of related equipment is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of digital product repair devices, specifically relating to an intelligent temperature controller for a digital product repair workbench. Background Technology

[0002] Currently, the repair of digital product displays, especially LCD screens, is basically carried out using a repair workbench consisting of a heating plate and a temperature controller. Existing temperature controllers with digital constant temperature control do not have voltage detection and judgment, and cannot automatically switch between 220V and 110V AC mains power. An external voltage converter is required, which increases the cost of the workbench and makes it less adaptable.

[0003] For example, a digital product repair workbench with a digital constant temperature control mode, disclosed in CN204705843U, cannot accurately control the output power, resulting in energy waste. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model designs a new type of intelligent temperature controller for digital product repair workbench. By designing a control circuit board, it determines whether the input voltage is 110V or 220V.

[0005] To achieve the above objectives, this utility model provides an intelligent temperature controller for a digital product repair workbench, comprising a housing and a control module. The housing includes a front panel and a back cover, which are detachably connected. The front panel has a button slot and a display slot. The control module includes a circuit board, which is fixed within a cavity formed by the front panel and the back cover. The circuit board includes a voltage judgment unit, a power conversion unit, a button unit, a display unit, and a main control unit. The voltage judgment unit, power conversion unit, button unit, and display unit are all electrically connected to the main control unit. The circuit board also has a silicon controlled rectifier (SCR) unit, which is electrically connected to the main control unit. The temperature controller is connected to a heating unit through the SCR unit.

[0006] Furthermore, the power conversion module is an AC-DC conversion module.

[0007] Furthermore, the main control unit uses a main control chip.

[0008] Furthermore, the circuit board is also equipped with a temperature acquisition unit, which uses an NTC thermistor and is electrically connected to the heating unit and the main control chip respectively.

[0009] Furthermore, the thyristor unit includes a thyristor switch and a power switch. The power switch is located on the circuit board and connected to the heating unit. The thyristor switch is connected to the power switch and also connected to the heating unit. The main control chip continuously collects the temperature data of the heating unit and controls the current flow to adjust the power output, thereby controlling the temperature by switching the heating wire on and off during the heating process.

[0010] Furthermore, the heating unit is located inside a heating plate, which is a silicone heating plate.

[0011] The working principle of this utility model is as follows: The voltage judgment unit on the circuit board determines whether the input voltage is (110V) or (220V). After confirming the input voltage, the circuit board outputs a corresponding control signal to the thyristor power regulator. The task of the thyristor unit is to precisely control the current on and off in each cycle to adjust the power output, thereby realizing the conduction and cutoff during the heating process of the heating plate and achieving planned temperature control. During the heating process, the main control chip continuously collects the temperature data returned by the NTC. By using the PID algorithm, the main control chip outputs a corresponding control signal. By continuously adjusting the trigger angle, the output power can be changed, precisely controlling the temperature of the electric heater and avoiding overheating or underheating.

[0012] Compared with the traditional resistance power regulation method, the structure of this utility model adopts thyristor power regulation with almost no energy loss and higher efficiency; it can withstand higher voltage and current, and is suitable for high-power load equipment; it can reduce the loss of electrical components and extend the service life of related equipment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, as well as the beneficial effects of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other structures can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram illustrating the working principle of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the functional module structure of this utility model. Detailed Implementation

[0017] This utility model provides an intelligent temperature controller for a digital product repair workbench. See [link to relevant documentation]. Figures 1-3 The system includes a housing and a control module. The housing includes a front panel and a back cover, which are detachably connected. The front panel has button slots and display slots. In this embodiment, there is one display slot 3 and four button slots 4 from top to bottom. The control module includes a circuit board 5, which is fixed in the cavity formed by the front panel and the back cover. The circuit board includes a voltage judgment unit 6, a power conversion unit 7, a button unit 8, a display unit 9, and a main control unit 10. The voltage judgment unit 6, the power conversion unit 7, the button unit 8, and the display unit 9 are all electrically connected to the main control unit 10. The buttons of the button unit and the display screen of the display unit correspond to the button slots and display slots, respectively. The buttons are a power on / off switch, a setting increment button, and a setting decrement button. The power on / off switch is connected to the power supply through a power interface 11. The circuit board also has a silicon controlled rectifier (SCR) unit 12, which is electrically connected to the main control unit. The temperature controller is connected to the heating unit through the SCR unit.

[0018] The power conversion module described in this embodiment is an AC-DC conversion module.

[0019] The main control unit described in this embodiment uses a main control chip, and the main control chip IC model is CA51 F352P4.

[0020] The circuit board described in this embodiment is also provided with a temperature acquisition unit 13, which is an NTC thermistor and is electrically connected to the heating unit and the main control chip respectively.

[0021] The thyristor unit described in this embodiment includes a thyristor switch and a power switch. The power switch is located on the circuit board and is connected to the heating unit. The thyristor switch is connected to the power switch and is also connected to the heating unit. The main control chip continuously collects the temperature data of the heating unit and controls the current flow to adjust the power output, thereby controlling the temperature by switching the heating wire on and off during the heating process.

[0022] The heating unit described in this embodiment is located inside a heating plate, which is a silicone heating plate (not shown in the figure).

[0023] For the working architecture of this embodiment, please refer to... Figure 1The control circuit board includes IC circuits, key input circuits, buzzer prompt circuits, AC frequency detection circuits, AC voltage sampling circuits, and NTC temperature acquisition circuits, forming various functional units. It controls the load on the heating plate to achieve the desired working purpose. The specific working method is as follows: Power is connected, and the power switch is pressed to turn on the device. The control circuit board determines whether the input voltage is (110V) or (220V). After powering on, the working temperature is adjusted using the plus and minus keys. After confirming the voltage, set temperature, and time, the control circuit board outputs corresponding control signals to the thyristor unit. The thyristor unit precisely controls the current flow to adjust the power output, thus controlling the heating wire's conduction and cutoff during heating and achieving the desired temperature control. This embodiment also includes a temperature control protection switch for over-temperature protection. During the heating process, the main control chip (CPU: 1T8051, ROM: FLASH 8 / 16 / 32K bytes, operating voltage 1.8-5.5V, IC model CA51 F352P4) continuously collects the temperature data returned by the NTC (100K 1% B3950), decodes and drives it through HT1621 and displays it on the LCD. By using a PID algorithm, the main control chip outputs corresponding control signals, and the output power can be changed by continuously adjusting the trigger angle.

[0024] In summary, this invention utilizes the characteristic that a silicon controlled rectifier (SCR) generates current changes with temperature, enabling the temperature controller to achieve self-regulation of temperature control using the SCR. This reduces component losses, improves regulation accuracy, and extends the service life of related equipment.

[0025] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An intelligent temperature controller for a digital product repair workbench, characterized in that, The temperature controller comprises a shell, a control module, the shell comprises a panel and a back cover, the panel and the back cover are detachably connected, a key slot and a display slot are formed in the panel, the control module comprises a circuit board, the circuit board is fixed in a containing cavity formed by the panel and the back cover, the circuit board comprises a voltage judging unit, a power conversion unit, a key unit, a display unit and a main control unit, the voltage judging unit, the power conversion unit, the key unit and the display unit are electrically connected with the main control unit, a silicon controlled unit is further arranged on the circuit board, the silicon controlled unit is electrically connected with the main control unit, and the temperature controller is connected with a heating unit through the silicon controlled unit.

2. The smart thermostat of claim 1, wherein, The power conversion unit is an AC-DC conversion module.

3. The smart thermostat of claim 2, wherein, The main control unit adopts a main control chip.

4. The smart thermostat of claim 3, wherein, A temperature collecting unit is further arranged on the circuit board.

5. The smart thermostat of claim 4, wherein, The silicon controlled unit comprises a silicon controlled switch and a power switch, the power switch is arranged on the circuit board and connected with the heating unit, and the silicon controlled switch is connected with the power switch and the heating unit.

6. The smart thermostat of claim 5, wherein, The heating unit is arranged in a heating plate, and the heating plate is a silica gel heating plate.

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