Digital electric soldering iron

Abstract

The utility model provides a digital electric soldering iron which comprises a soldering station, a soldering iron handle connected with the soldering station through a wired communication module and a digital control system, the digital control system comprises a microprocessor, a digital control module and a temperature sensor, and the microprocessor comprises a main processor arranged on the soldering station and a slave processor arranged on the soldering iron handle; the digital control module comprises a master control regulator arranged on a soldering station and a slave control regulator arranged on a soldering iron handle, and the master control regulator and the slave control regulator are both used for regulating and controlling the target temperature of a soldering bit. The temperature sensor comprises a solder tip temperature sensor used for collecting the temperature of the solder tip. Digital signals are adopted to control related functions, so that the system has the advantages of strong anti-interference capability, high precision, high stability and the like, and accurate transmission of data and stable operation of the system can be ensured; the master processor and the slave processor communicate with each other, so that the welding quality and efficiency can be improved, more accurate control is facilitated, the operation is convenient, the working efficiency is effectively improved, and the function expansibility and flexibility of the electric soldering iron can be improved.

Description

Technical Field

[0001] This utility model relates to the field of soldering iron technology, specifically to a digital soldering iron. Background Technology

[0002] Soldering irons, as a soldering tool, are widely used in the production, testing, and repair of electronics. Existing soldering irons are generally divided into two categories: The first category is soldering irons with a soldering station. These typically have the control system centrally located on the soldering station, including components such as a processor, control module, display module, and protection module. The soldering iron handle only has a heating module and temperature sensor, lacking a control module. Communication between the soldering station and the soldering iron handle is via analog signals. The second category is soldering irons without a soldering station. These soldering irons have the handle directly connected to the mains power supply via a power cord, and the handle integrates modules such as a processor, control module, display module, heating module, and temperature sensor.

[0003] Both types have their drawbacks. The first type, while having a soldering station that allows for higher power design and faster achievement of the required operating temperature, and offering higher safety, also simplifies circuit design and reduces costs due to the analog signal system. However, because the control system is centralized on the soldering station, operators must use one hand to reach the station when temporary temperature adjustments are needed during soldering, making operation cumbersome and affecting efficiency. Furthermore, the lower precision of analog signal control can impact soldering quality. The second type lacks a soldering station, integrating all modules into the soldering iron handle, making operation more convenient. However, the limited internal space of the handle restricts the iron's functionality, limiting high-power design and resulting in slower heating and lower efficiency. Additionally, due to space constraints, this type of soldering iron typically lacks a safety protection module, posing a certain safety risk. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems and shortcomings by providing a digital soldering iron that effectively solves the problems of low work efficiency, inconvenient operation, and safety risks associated with the two existing types of soldering irons.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model discloses a digital soldering iron, comprising a soldering station and a soldering iron handle connected to the soldering station via a wired communication module. The invention is characterized by further comprising a digital control system, the digital control system including: a microprocessor, comprising a main processor located on the soldering station and a slave processor located on the soldering iron handle, the main processor and the slave processor communicating via the wired communication module; a digital control module, comprising a main controller located on the soldering station and a slave controller located on the soldering iron handle, both the main controller and the slave controller being used to adjust and control the target temperature of the soldering iron tip; and a temperature sensor located on the soldering iron handle, the temperature sensor including at least a soldering iron tip temperature sensor for collecting the temperature of the soldering iron tip; the main processor and the main controller are connected via an internal bus or a dedicated interface, the slave processor, the temperature sensor, and the slave controller are connected via an internal bus or a dedicated interface; the slave processor converts the soldering iron tip temperature into a digital signal and sends it to the main processor; the main processor, upon receiving the digital signal, determines the difference from the target temperature and generates control commands to adjust the heating module located within the soldering iron handle.

[0007] In some embodiments, the digital control system further includes an attitude sensor, which is mounted on the soldering iron handle and connected to the slave processor via an internal bus or a dedicated interface. The attitude sensor collects attitude data of the soldering iron handle and sends it to the master processor via the slave processor. The master processor generates control commands to start / stop the heating module or adjust the heating module.

[0008] Furthermore, the posture data includes motion state data, static state data, placement angle data, and usage angle data.

[0009] In some embodiments, the temperature sensor further includes a handle internal temperature sensor, which is disposed on the inner wall of the handle housing of the soldering iron handle and connected to the slave processor via an internal bus or a dedicated interface. The handle internal temperature sensor collects the temperature data of the handle housing and sends it to the master processor through the slave processor. The master processor generates control commands to start / stop the heating module or adjust the heating module.

[0010] In some embodiments, the temperature sensor further includes an external temperature sensor on the handle. The external temperature sensor is disposed on the outer wall of the handle housing of the soldering iron handle and is connected to the slave processor via an internal bus or a dedicated interface. After collecting room temperature data, the external temperature sensor sends the data to the master processor through the slave processor. The master processor then generates control commands to adjust the heating module.

[0011] In some embodiments, the slave controller is a button, which includes a button cap and two actuating contacts mounted on a sub-circuit board. The button cap is pressable and disposed outside the handle housing of the soldering iron handle. The button cap is strip-shaped with inwardly extending contact posts at both ends that cooperate with the two actuating contacts. When one end of the button cap is pressed, the contact post at that end causes the corresponding actuating contact to contact the stationary contact on the sub-circuit board, and the target temperature changes.

[0012] In some embodiments, the digital control system further includes a protection module, which is located in the soldering station and connected to the main processor via an internal bus or a dedicated interface, for monitoring the safety status of the system.

[0013] In some embodiments, the digital control system further includes a display module, which includes a temperature display on the soldering iron handle. The temperature display is connected to the slave processor via an internal bus or a dedicated interface. The slave processor receives temperature display instructions from the master processor and then controls the temperature display to perform corresponding displays.

[0014] Furthermore, the temperature display element is a light strip, which is mounted on the main circuit board, and a light-transmitting window is provided on the handle shell of the soldering iron handle corresponding to the position of the light strip.

[0015] Furthermore, a diffuser is connected to the light-transmitting window.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model is equipped with a digital control system, which uses digital signals to control related functions. It has the advantages of strong anti-interference ability, high precision and high stability, and can ensure accurate data transmission and stable system operation.

[0018] 2. While the main processor is set on the soldering station, a slave processor is also set on the soldering iron handle. The slave processor is closer to the heating module and the soldering iron tip, so it can respond to temperature changes more quickly and perform local optimization control to improve soldering quality and efficiency. The slave processor is also responsible for communicating with the main processor and feeding back information such as the soldering iron tip temperature and heating status to the main controller on the soldering station in real time. The main processor performs comprehensive analysis and more precise control based on this information.

[0019] 3. Since both the soldering station and the soldering iron handle are equipped with microprocessors, and digital signals can be flexibly processed and controlled through programming and algorithms, the functional expandability and flexibility of the soldering iron are improved.

[0020] 4. A slave control regulator is installed on the soldering iron handle, which allows the temperature of the soldering iron tip to be directly adjusted by the hand holding the soldering iron handle during operation. This makes operation convenient and effectively improves work efficiency.

[0021] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structural block of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of a product according to a certain embodiment of the present utility model;

[0024] Figure 3 for Figure 2 Exploded view of the product;

[0025] Figure 4 for Figure 2 An exploded view of the soldering iron handle of the product;

[0026] Figure 5 for Figure 2 A schematic diagram showing the internal exploded structure of the soldering iron handle of the product;

[0027] Figure 6 for Figure 2 A three-dimensional structural diagram of the product's soldering station.

[0028] Figure label:

[0029] Soldering iron handle 1;

[0030] 11. Soldering iron tip; 12. Soldering iron core; 13. Handle shell; 131. Buckle; 14. Light-transmitting window; 15. Connector;

[0031] Button 2;

[0032] Button cap 21, pressure post 211, connecting plate 212, snap hole 213, actuating contact 22, stationary contact 23;

[0033] Circuit board 3;

[0034] Main circuit board 31, connecting recess 311, sub-circuit board 32, insertion slot 321, connecting base 33;

[0035] LED strip 4;

[0036] Soft light panel 5;

[0037] Soldering station 6;

[0038] Display screen 61, adjustment knob 62, selector switch 63, socket 64, electrical interface 65;

[0039] Wire 7;

[0040] Main processor 81, slave processor 82, digital control module 83, master controller 831, slave controller 832, temperature sensor 84, soldering tip temperature sensor 841, handle external temperature sensor 842, handle internal temperature sensor 843, posture sensor 85, heating module 86, display module 87, protection module 88. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis.

[0043] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "fitting," "connected," "linked," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The digital soldering iron of this utility model is described below with reference to the accompanying drawings.

[0046] like Figure 1As shown, the digital soldering iron of this invention includes a soldering station 6, a soldering iron handle 1 connected to the soldering station 6 via a wired communication module, and a digital control system. The digital control system includes a microprocessor, a digital control module 83, and a temperature sensor 84. The microprocessor includes a main processor 81 located on the soldering station 6 and a slave processor 82 located on the soldering iron handle 1. The two processors communicate with each other via a wired communication module, which can be a serial port, USB, or similar interface. The digital control module 83 includes a main controller 831 located on the soldering station 6 and a slave controller 832 located on the soldering iron handle 1. Both controllers can be used to adjust and control the target temperature of the soldering iron tip. The temperature sensor 84 is located on the soldering iron handle 1 and includes at least a soldering iron tip temperature sensor 84 for measuring the temperature of the soldering iron tip. Modules and components on the same structure (soldering station 6 or soldering iron handle 1) are connected via an internal bus or dedicated interface to achieve digital signal transmission.

[0047] The microprocessor and digital control module 83 communicate via predefined communication protocols, such as UART and CAN. These protocols specify the data transmission format, rate, and synchronization method. The communication content mainly includes temperature data, control commands, and status information. The main processor 81 is responsible for the overall system control and coordination. It receives temperature data from the soldering iron handle 1 and generates control commands based on a preset control algorithm. The slave processor 82 is responsible for real-time temperature data acquisition and sending the data to the main processor 81. It also receives control commands from the main processor 81 and controls the heating module 86 to make corresponding adjustments. Using digital signals for related function control has advantages such as strong anti-interference capability, high precision, and high stability, ensuring accurate data transmission and stable system operation.

[0048] The operating temperature control process of this soldering iron during operation is as follows:

[0049] 1. Temperature Acquisition and Feedback: The processor 82 acquires the temperature of the soldering iron tip in real time through the soldering iron tip temperature sensor 84, and sends the temperature data to the main processor 81 through a communication interface (such as UART, CAN, etc.); after receiving the temperature data, the main processor 81 processes and analyzes it to determine the difference between the soldering iron tip temperature and the target temperature.

[0050] 2. Control command generation and transmission: Based on the temperature difference, the main processor 81 generates corresponding control commands, such as adjusting the power of the heating module 86 and changing the heating rate. Then, these control commands are sent to the digital control module 83 on the soldering iron handle 1 in the form of digital signals through the communication interface.

[0051] 3. Cyclic monitoring and adjustment: Throughout the process, the system continuously performs operations such as temperature acquisition, feedback, control command generation and sending, and heating module 86 adjustment to ensure that the soldering iron tip temperature is always kept within the target temperature range.

[0052] When the target temperature needs to be changed, it can be adjusted via the master controller 831 or the slave controller 832. For example, when the operator operates the master controller 831, the digital control module 83 on the soldering station 6 receives the operator's input command and sends it to the master processor 81, thus forming a new user-set target temperature value. The soldering tip temperature can then be adjusted according to the above operating procedure. Similarly, when the operator operates the slave controller 832, the digital control module 83 on the soldering iron handle 1 receives the operator's input command and sends it to the master processor 81 via the slave processor 82, thus forming a new user-set target temperature value. The soldering tip temperature can then be adjusted according to the above operating procedure. Since the soldering tip temperature can also be adjusted via the slave controller 832 on the soldering iron handle 1, the operator can directly adjust the soldering tip temperature by holding the soldering iron handle 1 during operation, which is convenient and effectively improves work efficiency.

[0053] This invention utilizes digital signals for communication and includes a slave processor 82 on the soldering iron handle 1, thus expanding the functionality of the soldering iron. For example... Figure 1The illustrated embodiment adds a posture recognition function to the soldering iron handle 1. The digital control system of this embodiment also includes a posture sensor 85, which is mounted on the soldering iron handle 1 and connected to the slave processor 82 via an internal bus or dedicated interface. The posture sensor 85 collects the posture of the soldering iron handle 1 to generate posture data. This posture data includes data on motion state, static state, placement angle, and usage angle. Motion state data refers to the posture data when the soldering iron handle 1 is held by the operator for work; static state data refers to the posture data generated when the soldering iron handle 1 remains stationary for a preset time; placement angle data refers to the posture data generated when the soldering iron handle 1 is placed flat on a table, inserted into the placement hole of the soldering station 6, or placed on the placement rack of the soldering station 6; usage angle data refers to the posture data generated when the soldering iron handle 1 is in use and within its angle range. After generating the corresponding posture data, the posture sensor 85 sends it to the main processor 81 via the slave processor 82. The main processor 81 generates corresponding control commands to start / stop the heating module 86 or adjust the power of the heating module 86. For example, if the posture data is in motion or at a usage angle, it means that the soldering iron handle 1 is in operation. At this time, the heating module 86 is adjusted to ensure that the temperature of the soldering iron tip is always kept within the target temperature range. Or, if the posture data is in a stationary state or at a placement angle, it means that the soldering iron handle 1 is in a paused or non-operational state. At this time, the heating module 86 is stopped or the temperature of the soldering iron tip is reduced to enter sleep mode. When the posture data changes to motion or at a usage angle in sleep mode, the sleep mode is exited and the heating module 86 is adjusted to restore the temperature of the soldering iron tip to the target temperature range.

[0054] Regarding the functional expansion of the soldering iron, additional features can be added, such as fault detection and handling, backup communication, power management (to provide a stable power supply), reset (to restart the MCU or DSP in case of system failure), and anti-counterfeiting. Digital signals can be flexibly processed and controlled through programming and algorithms, thus improving the soldering iron's flexibility. Furthermore, a slave processor 82 is located on the soldering iron handle 1, closer to the heating module 86 and the soldering tip, allowing for faster response to temperature changes and localized optimized control to improve soldering quality and efficiency. The slave processor 82 also communicates with the main processor 81, providing real-time feedback on information such as the soldering tip temperature and heating status to the main controller 831 on the soldering station 6 for more precise control.

[0055] like Figure 1In the illustrated embodiment, the temperature sensor 84 further includes an internal temperature sensor 843 and an external temperature sensor 842. Both temperature sensors 84 are connected to the slave processor 82 via an internal bus or a dedicated interface. The internal temperature sensor 843 is located on the inner wall of the handle housing of the soldering iron handle 1 and is used to collect the temperature of the handle housing. After generating temperature data, it is sent to the main processor 81 through the slave processor 82. The main processor 81 processes and analyzes the data to determine the difference between the current temperature and the preset temperature. If the difference exceeds the preset temperature, the main processor 81 generates a control command to pause the operation of the heating module 86 or adjust and reduce the power and speed of the heating module 86 to lower the temperature of the handle housing and prevent burns to the operator. When the temperature drops below the preset temperature, the main processor 81 generates a command to start the heating module 86 or increase the power and speed of the heating module 86 to ensure continued operation. The external temperature sensor 842 is located on the outer wall of the handle shell of the soldering iron handle 1. It is used to collect the ambient temperature of the working environment and send the acquired ambient temperature data to the main processor 81 through the processor 82. The main processor 81 generates control commands to adjust the heating module 86 according to the preset program settings. For example, if the ambient temperature is low, the heating module 86 is controlled to increase the heating rate to ensure that the temperature of the soldering iron tip can be quickly raised to the target temperature even in a low temperature environment.

[0056] Because this soldering iron has a soldering station 6, a more comprehensive protection mechanism can be set up. For example... Figure 1 In the illustrated embodiment, the digital control system further includes a protection module 88 connected to the main processor 81 via an internal bus or a dedicated interface, which is located in the soldering station 6. This protection module 88 includes circuits for overvoltage protection, overcurrent protection, and overheat protection. It determines whether the system is in a safe state by monitoring parameters such as power supply voltage, current, or temperature. If a parameter exceeds a preset maximum value or falls below a preset minimum value, the main processor 81 sends a control signal to adjust the corresponding module, thereby protecting equipment and personal safety.

[0057] like Figure 1 As shown, the digital control system also includes a display module 87, which includes a temperature display on the soldering iron handle 1. This temperature display is connected to the slave processor 82 via an internal bus or a dedicated interface. The slave processor 82 receives temperature display commands from the master processor 81 and then controls the temperature display to perform the corresponding display. Alternatively, the display module 87 may also include a display screen 61 on the soldering station 6 for displaying information such as the current temperature and operating status.

[0058] The following description will be further illustrated with specific product examples.

[0059] like Figures 2 to 6As shown, the digital soldering iron of this embodiment includes a soldering station 6, a soldering iron handle 1, and a digital control system. The digital control system includes a main processor 81, a digital control module 83 (including a main controller regulator 831), a protection module 88, and a display screen 61 in a display module 87 on the soldering station 6. The soldering iron handle 1 includes a slave processor 82, a digital control module 83 (including a slave controller regulator 832), a temperature sensor 84, an attitude sensor 85, and a temperature display element in the display module 87. The various modules and components on the soldering station 6 are connected via an internal bus or a dedicated interface, and the various modules and components on the soldering iron handle 1 are also connected via an internal bus or a dedicated interface. The soldering station 6 and the soldering iron handle 1 are connected via a wired communication module, enabling communication between the main processor 81 and the slave processor 82.

[0060] like Figure 2 As shown, the slave controller 832 is button 2. Button 2 is electrically connected to the circuit board 3 in the soldering iron handle 1 to realize the adjustment of the temperature regulation system through button 2. Therefore, if the temperature of the soldering iron tip needs to be adjusted temporarily during the soldering process, the operator can adjust the temperature of the soldering iron tip by pressing button 2 with the hand holding the soldering iron handle 1. The operation is convenient and effectively improves work efficiency. Moreover, the soldering station 6 is equipped with a protection module 88, so the soldering iron handle 1 has high safety.

[0061] The welding station 6 can be a large welding station 6 with an operating platform for placing the workpiece, or it can be a small welding station 6 without an operating platform. For example... Figure 3 and Figure 6 As shown, the soldering station 6 in this embodiment is a small soldering station 6, which is triangular prism in shape. One triangular end face is provided with a socket 64 for the connector 15 of the soldering iron handle 1 to be inserted, and the opposite triangular end face is provided with an electrical interface 65. The electrical interface 65 can be a Type-C interface, a USB interface, a DC interface, etc. Multiple different types of interfaces can be provided on this end face to meet the connection requirements of various electrical connectors. On one of the rectangular surfaces of the soldering station 6, there is a display screen 61, an adjustment knob 62, and a selection switch 63. The adjustment knob 62 is the main control regulator 831, located on one side of the display screen 61. The temperature of the soldering iron tip can also be adjusted by adjusting the adjustment knob 62. At the same time, the display screen 61 can intuitively display the corresponding temperature value. In addition, the display screen 61 can also display information such as working status and target temperature. The selection switch 63 is mainly used to switch options when setting functions, such as horizontally selecting different functions. In addition, the selection switch 63 can also be implemented as a power switch through software.

[0062] For easier installation, the circuit board 3 includes a main circuit board 31 and a sub-circuit board 32, such as... Figure 4 and Figure 5As shown, the main circuit board 31 is electrically connected to the soldering iron tip 11. A recess is provided at the front end of the main circuit board 31, and a connector 33 is provided in the recess. The soldering iron tip 11 is connected to or integrated with the soldering iron core 12. The connecting end of the soldering iron core 12 is inserted into the connector 33 to achieve electrical connection with the main circuit board 31. The heating module is located inside the soldering iron core. The sub-circuit board 32 is electrically connected to the main circuit board 31, and the button 2 is electrically connected to the sub-circuit board 32.

[0063] The sub-circuit board 32 of this invention has two advantages. First, the main circuit board 31 is located in the middle of the soldering iron handle 1, so its surface is far from the handle housing 13. Extending the contact post 211 of the button cap 21 is necessary to extend the button cap 21 out of the handle housing 13, resulting in a long pressing stroke, poor pressing experience, and wasted material. Connecting the button 2 to the sub-circuit board 32 shortens the length of the contact post 211 of the button cap 21, improves the pressing effect, and enables rapid pressing adjustment. Second, when the heating module 86 heats the soldering iron tip, the temperature is easily transferred to the main circuit board 31. If the button 2 is directly placed on the main circuit board 31, it is easily damaged by high temperature. Therefore, placing it on the sub-circuit board 32 reduces the risk of high temperature damage.

[0064] Furthermore, since the side edge of the main circuit board 31 is closer to the handle housing 13, and to simplify the internal structure of the soldering iron handle 1, it is preferable to place the sub-circuit board 32 on the side edge of the main circuit board 31. This way, the sub-circuit board 32 is closer to the handle housing 13, allowing the button 2 to be more compactly positioned, reducing costs and improving the pressing effect. Moreover, no additional connectors are needed on the handle housing 13 to fix the sub-circuit board 32. Figure 4 As shown, in this embodiment, the sub-circuit board 32 is arranged perpendicularly to the main circuit board 31. A connection recess 311 is provided at the side edge of the main circuit board 31, and the sub-circuit board 32 is provided at both ends with insertion slots 321. The sub-circuit board 32 is inserted into the two sides of the connection recess 311 through the insertion slots 321, and the lower end surface of the sub-circuit board 32 is placed on the concave surface of the connection recess 311, thereby realizing the connection and fixation of the sub-circuit board 32 and the main circuit board 31 and the electrical connection. Therefore, it can save wire wiring and make the internal structure of the soldering iron handle 1 simpler.

[0065] like Figure 4As shown, the button 2 includes a button cap 21 and two actuating contacts 22. The two actuating contacts 22 are mounted on the sub-circuit board 32 and are located at both ends of the upper surface of the sub-circuit board 32. The button cap 21 is pressably mounted on the handle shell 13 of the soldering iron handle 1. For ease of operation, the button cap 21 in this embodiment is designed as a strip with inwardly extending contact posts 211 at both ends to cooperate with the two actuating contacts 22. When one end of the button cap 21 is pressed, the contact post 211 at that end drives the corresponding actuating contact 22 to contact the stationary contact 23 on the sub-circuit board 32, thereby changing the target temperature.

[0066] To facilitate the connection of the button cap 21, connecting plates 212 extend inward from both sides of the middle of the button cap 21. The connecting plates 212 have snap holes 213, and the handle shell 13 of the soldering iron handle 1 has corresponding snap feet 131. The button cap 21 is connected to the handle shell 13 by snapping the snap feet 131 into the snap holes 213. Simultaneously, the snap feet 131 are smaller than the snap holes 213, allowing the button cap 21 some room to move and enabling both ends to be pressed. Besides the above connection method, other connection methods such as connecting holes and connecting posts, or ball sockets and ball posts, can also be used.

[0067] Like 4 and Figure 5 As shown, in this embodiment, the temperature display is a light strip 4, which is mounted on the main circuit board 31. A light-transmitting window 14 is provided on the handle housing 13 of the soldering iron handle 1, corresponding to the position of the light strip 4. In this embodiment, the light-transmitting window 14 is located on the side of the main circuit board 31, while the light strip 4 is positioned on the surface of the main circuit board 31, near the end of the side where the light-transmitting window 14 is located. The light strip 4 consists of multiple LEDs. The main processor generates control commands based on the current soldering iron tip temperature data, controlling the corresponding number of LEDs to light up. The operator can determine the soldering iron tip temperature by observing the number of LEDs lit, their different colors, or their brightness, without needing to consult the temperature value displayed on the display screen 61 on the soldering station 6.

[0068] Furthermore, to prevent the light from being too glaring, this embodiment has a diffuser 5 attached to the light-transmitting window 14. It is understood that the light strip 4 could also be replaced with a digital display screen that directly displays the temperature value.

[0069] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A digital soldering iron, comprising a soldering station and a soldering iron handle connected to the soldering station via a wired communication module, characterized in that, It also includes a digital control system, which comprises: The microprocessor includes a main processor located on the soldering station and a slave processor located on the soldering iron handle, wherein the main processor and the slave processor communicate through the wired communication module; The digital control module includes a master controller located on the soldering station and a slave controller located on the soldering iron handle. Both the master controller and the slave controller are used to adjust and control the target temperature of the soldering iron tip. A temperature sensor is provided on the soldering iron handle, and the temperature sensor includes at least a soldering iron tip temperature sensor, which is used to collect the temperature of the soldering iron tip. The main processor and the main controller are connected via an internal bus or a dedicated interface. The slave processor, the temperature sensor, and the slave controller are connected via an internal bus or a dedicated interface. The slave processor converts the soldering iron tip temperature into a digital signal and sends it to the main processor. After receiving the digital signal, the main processor determines the difference between the digital signal and the target temperature and generates a control command to adjust the heating module located inside the soldering iron handle.

2. The digital soldering iron according to claim 1, characterized in that, The digital control system also includes an attitude sensor, which is mounted on the soldering iron handle and connected to the slave processor. The attitude sensor collects the attitude data of the soldering iron handle and sends it to the master processor through the slave processor. The master processor generates control commands to start / stop the heating module or adjust the heating module.

3. The digital soldering iron according to claim 2, characterized in that, The posture data includes motion state data, static state data, placement angle data, and usage angle data.

4. The digital soldering iron according to claim 1, characterized in that, The temperature sensor also includes a handle internal temperature sensor, which is disposed on the inner wall of the handle shell of the soldering iron handle and connected to the slave processor via an internal bus or a dedicated interface. The handle internal temperature sensor collects the temperature data of the handle shell and sends it to the master processor through the slave processor. The master processor generates control commands to start / stop the heating module or adjust the heating module.

5. The digital soldering iron according to claim 1, characterized in that, The temperature sensor also includes an external temperature sensor for the handle. The external temperature sensor for the handle is disposed on the outer wall of the handle housing of the soldering iron handle and is connected to the slave processor via an internal bus or a dedicated interface. After the external temperature sensor for the handle collects the room temperature data, it sends it to the master processor through the slave processor. The master processor generates control commands to adjust the heating module.

6. The digital soldering iron according to claim 1, characterized in that, The slave controller is a button, which includes a button cap and two actuating contacts. The two actuating contacts are mounted on a sub-circuit board. The button cap is pressable and located outside the handle housing of the soldering iron handle. The button cap is strip-shaped with inwardly extending contact posts at both ends that cooperate with the two actuating contacts. When one end of the button cap is pressed, the contact post at that end causes the corresponding actuating contact to contact the stationary contact on the sub-circuit board, and the target temperature changes.

7. The digital soldering iron according to claim 1, characterized in that, The digital control system also includes a protection module, which is located in the soldering station and connected to the main processor via an internal bus or a dedicated interface, for monitoring the safety status of the system.

8. The digital soldering iron according to claim 1, characterized in that, The digital control system further includes a display module, which includes a temperature display on the soldering iron handle. The temperature display is connected to the slave processor via an internal bus or a dedicated interface. The slave processor receives temperature display commands from the master processor and then controls the temperature display to perform corresponding displays.

9. The digital soldering iron according to claim 8, characterized in that, The temperature display element is a light strip, which is mounted on the main circuit board. A light-transmitting window is provided on the handle shell of the soldering iron handle corresponding to the position of the light strip.

10. The digital soldering iron according to claim 9, characterized in that, A diffuser is connected to the light-transmitting window.

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