Autonomous dormancy and solder tip adaptation method of electric soldering iron and electric soldering iron

Abstract

The invention relates to the technical field of electric soldering irons, and provides an automatic dormancy and solder tip adaptation method of an electric soldering iron and the electric soldering iron.The method comprises the steps that the solder tip is inserted into an installation cavity of an electric soldering iron handle, and a solder tip outer pipe is provided with contact points of a heating wire and a thermocouple; first, second and third elastic contact pieces on the handle mainboard limit and fix the solder tip in the insertion process, and are electrically connected with a contact point of the heating wire and the thermocouple, a positive electrode of the heating wire and a temperature measuring point of the thermocouple respectively; a thermocouple temperature measurement signal is transmitted to the host through the mainboard, and the host controls the heating wire to stop heating to a set temperature; and periodically collecting a handle temperature control key state and attitude instrument sensor data, updating to a data buffer area, judging a use state based on a handle inclination angle and static time, and controlling the electric soldering iron to enter a sleep mode when a preset condition is met. Compatible adaptation of various types of soldering bits is achieved, dormancy is autonomously triggered by intelligently sensing the use state, and the flexibility, safety and energy efficiency are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of devices for use with power sources, transmission systems of control signals, electric irons and the like, and in particular to an autonomous sleep and iron tip adaptation method of an electric iron and an electric iron. BACKGROUND

[0002] At present, the heating electric iron on the market usually adopts a design in which the handle strictly corresponds to the model of the iron tip. For example, different models of iron tips such as FS-210, FS-245, FS-115 and the like must be matched with special handles corresponding to the heating and temperature line sequences thereof in order to be used. This leads to the need for the user to prepare multiple handles and frequently change them when performing different welding tasks, which not only increases the purchase cost but also brings inconvenience and insufficient flexibility in operation. In addition, the sleep function of the existing electric iron generally relies on a physical sleep seat. When the user temporarily stops welding, the handle must be accurately inserted into the special sleep seat, so that the host system can detect and enter the sleep state to reduce the temperature. If the user neglects to place it in the sleep seat, the electric iron will be in a high-temperature idle state for a long time. This not only causes energy waste, but also accelerates the oxidation and wear of the iron tip due to continuous high temperature, shortens its service life, and brings serious safety hazards such as burns and fires.

[0003] Therefore, there is an urgent need for an electric iron scheme that can be compatible with multiple models of iron tips and intelligently perceive the use state to realize autonomous sleep, in order to solve the problems of poor flexibility, dependence on external devices and safety risks in the prior art. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an autonomous sleep and iron tip adaptation method of an electric iron and an electric iron to be compatible with multiple models of iron tips and intelligently perceive the use state to realize autonomous sleep, thereby solving the problems of poor flexibility, dependence on external devices and safety risks in the prior art.

[0005] In a first aspect, the present application provides an autonomous sleep and iron tip adaptation method of an electric iron, comprising: inserting any model of iron tip in multiple models of iron tips into the mounting cavity of the electric iron handle, the iron tip comprising a sleeve heating wire, an outer tube of a thermocouple and a welding nozzle arranged at one end of the outer tube, the outer tube being provided with contact points of the heating wire and the thermocouple, a positive electrode of the heating wire and a temperature measurement point of the thermocouple, the temperature measurement point of the thermocouple measuring the heating temperature of the iron tip to obtain a heating temperature signal of the iron tip; In the process of inserting the iron head into the installation cavity of the electric iron handle, the first elastic contact, the second elastic contact and the third elastic contact on the main plate in the handle are collectively used for limiting and fixing the iron head and respectively correspond to the contact points of the heating wire and the thermocouple, the positive pole of the heating wire and the temperature measuring point of the thermocouple, the third elastic contact transmits the heating temperature signal to the host computer electrically connected to the main plate through the main plate, and the second elastic contact electrically connects the host computer and the positive pole of the heating wire through the main plate. The heating of the heating wire is controlled by the host computer, when the heating temperature of the iron head reaches the heating temperature set by the host computer, the host computer controls the heating wire to stop heating, the key state of the temperature control key on the electric iron handle and the attitude instrument sensor data in the handle are periodically collected and updated to the data buffer area, based on the data in the data buffer area, whether the inclination angle and the stationary time of the handle reach the preset state is judged, so that the electric iron enters the sleep mode, and the autonomous sleep is achieved.

[0006] In the second aspect, the application provides an electric iron using the autonomous sleep and iron head adaptation method of the electric iron.

[0007] Compared with the prior art, the application has the following beneficial effects: The application provides an electric soldering iron and a self-sleeping and soldering tip adapting method of the electric soldering iron. The method comprises the following steps: inserting any soldering tip of multiple types of soldering tips into a mounting cavity of a handle of the electric soldering iron, wherein the soldering tip comprises an outer tube sleeving a heating wire and a thermocouple, a welding nozzle arranged at one end of the outer tube, and contact points of the heating wire and the thermocouple arranged on the outer tube, a positive electrode of the heating wire and a temperature measuring point of the thermocouple, and the temperature measuring point of the thermocouple measures the heating temperature of the soldering tip to obtain a heating temperature signal of the soldering tip; during the process of inserting the soldering tip into the mounting cavity of the handle of the electric soldering iron, a first elastic contact, a second elastic contact and a third elastic contact on a mainboard in the handle are used to limit and fix the soldering tip and electrically connect the contact points of the heating wire and the thermocouple, the positive electrode of the heating wire and the temperature measuring point of the thermocouple, respectively, the third elastic contact transmits the heating temperature signal to a host computer electrically connected to the mainboard through the mainboard, and the second elastic contact electrically connects the host computer and the positive electrode of the heating wire through the mainboard; the heating of the heating wire is controlled by the host computer, when the heating temperature of the soldering tip reaches a heating temperature set by the host computer, the host computer controls the heating wire to stop heating, the key state of a temperature control button on the handle of the electric soldering iron and the data of a posture instrument sensor in the handle are periodically collected and updated to a data buffer, based on the data in the data buffer, whether the inclination angle and the stationary time of the handle reach a preset state is judged, so that the electric soldering iron is controlled to enter a sleep mode and realize self-sleeping. The application can be compatible with multiple types of soldering tips and intelligently perceive the use state to realize self-sleeping, and effectively solves the problems of poor flexibility, dependence on external devices and safety risks in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0008] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, will be described in detail hereinafter. Some embodiments of the application will be described hereinafter with reference to the drawings, but the application is not limited to the embodiments. The same reference numerals in the drawings denote the same or similar components or parts, and it should be understood by those skilled in the art that the drawings are not necessarily drawn to scale, and in the drawings: Figure 1 FIG. 1 is a flow diagram of a self-sleeping and soldering tip adapting method of an electric soldering iron according to an embodiment of the application; Figure 2 FIG. 2 is a cross-sectional structural diagram of the electric soldering iron after the electric soldering iron handle is assembled with the soldering tip according to an embodiment of the application; Figure 3 FIG. 3 is a cross-sectional structural diagram of the soldering tip according to an embodiment of the application; Figure 4 FIG. 4 is a structural diagram of the electric soldering iron after the electric soldering iron handle is assembled with the soldering tip according to an embodiment of the application; Figure 5 is a structural comparison diagram of electric irons with different shapes of soldering tips under the model FS-115 of the embodiment of the present application; Figure 6 is a structural comparison diagram of electric irons with different shapes of soldering tips under the model FS-210 of the embodiment of the present application; Figure 7 is a structural comparison diagram of electric irons with different shapes of soldering tips under the model FS-245 of the embodiment of the present application.

[0009] Explanation of reference signs: 1, handle; 10, lower shell; 11, upper shell; 110, first shell; 111, second shell; 12, wire sleeve; 13, temperature control button; 2, iron tip; 21, outer tube; 210, contact point of heating wire and thermocouple; 211, anode of heating wire; 212, temperature measuring point of thermocouple; 22, heating wire; 23, thermocouple; 24, soldering tip; 3, main board; 30, first elastic contact; 31, second elastic contact; 32, third elastic contact. DETAILED DESCRIPTION

[0010] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0011] Embodiment one Referring to Figures 1-7 , the present embodiment provides a self-sleeping and iron tip adapting method of an electric iron, comprising: S101, inserting any model of soldering tip in a plurality of models of soldering tips into the installation cavity of the handle of the electric iron, the soldering tip comprising an outer tube sleeving a heating wire and a thermocouple and a soldering tip arranged at one end of the outer tube, the outer tube being provided with a contact point of the heating wire and the thermocouple, an anode of the heating wire and a temperature measuring point of the thermocouple, the temperature measuring point of the thermocouple measuring the heating temperature of the soldering tip to obtain a heating temperature signal of the soldering tip; S102. During the process of inserting the soldering tip into the mounting cavity of the soldering iron handle, the first elastic contact, the second elastic contact, and the third elastic contact on the main board of the handle together limit and fix the soldering tip and respectively connect the contact points of the heating wire and the thermocouple, the positive electrode of the heating wire, and the temperature measuring point of the thermocouple. The third elastic contact transmits the heating temperature signal through the main board to the host electrically connected to the main board. The second elastic contact connects the host to the positive electrode of the heating wire through the main board. S103. The host controls the heating of the heating wire. When the heating temperature of the soldering iron tip reaches the heating temperature set by the host, the host controls the heating wire to stop heating. The host periodically collects the button status of the temperature control button on the soldering iron handle and the data of the attitude sensor inside the handle, and updates the collected data to the data buffer. Based on the data in the data buffer, the host determines whether the tilt angle and stillness time of the handle have reached the preset state, thereby controlling the soldering iron to enter the sleep mode and achieve autonomous sleep. In this embodiment, a set of universal elastic contacts serves as the physical interface, enabling plug-and-play electrical connection between different soldering iron tips (such as FS-210, FS-245, and FS-115) and the same handle. During the insertion of the soldering iron tip into the mounting cavity of the soldering iron handle, the first, second, and third elastic contacts on the mainboard of the handle collectively limit and fix the soldering iron tip, respectively connecting it to the contact points of the heating wire and thermocouple, the positive terminal of the heating wire, and the temperature measuring point of the thermocouple. The third elastic contact transmits the heating temperature signal through the mainboard to the host computer electrically connected to the mainboard. The second elastic contact connects the host computer to the positive terminal of the heating wire through the mainboard. This achieves universal compatibility of a single handle with multiple soldering iron tip models, eliminating the need for users to equip different soldering iron tips with dedicated handles, reducing costs and greatly improving operational convenience. The host controls the heating of the heating wire. When the heating temperature of the soldering iron tip reaches the heating temperature set by the host, the host controls the heating wire to stop heating. The host periodically collects the button status of the temperature control button on the soldering iron handle and the data of the attitude sensor inside the handle, and updates the collected data to the data buffer. Based on the data in the data buffer, the host determines whether the tilt angle and stillness time of the handle have reached the preset state, thereby controlling the soldering iron to enter the sleep mode, achieving autonomous sleep and intelligent perception of the usage status. This eliminates the forced dependence on the physical sleep socket and can automatically enter sleep when the user forgets to place it, effectively preventing energy waste, shortened life of the soldering iron tip, and safety hazards such as fire and burns caused by prolonged high-temperature dry burning.

[0012] Preferably, the periodic data acquisition step is executed by an MCU, which is configured with a set of hardware I2C interfaces in slave mode for the master device to read data from the data buffer. The MCU, as the control core within the controller, is responsible for scheduling acquisition tasks and formatting and storing the data in the buffer; the hardware I2C interfaces configured in slave mode provide a standardized and efficient data reading channel for the external master device. Using hardware I2C slave mode, compared to software simulation, offers more stable communication and more accurate timing, while reducing MCU overhead.

[0013] Preferably, the MCU is further configured with a set of GPIO interfaces to simulate I2C master mode. These GPIO interfaces are configured as open-drain outputs and switch to input mode when data from the attitude sensor needs to be read, allowing data to be read from the attitude sensor via the simulated I2C master. Since the MCU's hardware I2C resources may be occupied or reserved for slave mode, GPIO is used here to simulate an I2C master for communication with the attitude sensor. By configuring the GPIO as an open-drain output and dynamically switching the input / output state, the clock and data line operations of the I2C master can be simulated, thereby actively reading data from the attitude sensor. In resource-constrained embedded systems, this solution allows the use of ordinary GPIO ports to complete additional I2C master functions without the need for a dedicated hardware I2C controller, reducing costs. Simultaneously, simulated I2C provides greater software control flexibility, facilitating the handling of timing requirements from different sensors.

[0014] Preferably, the periodic acquisition of the button status of the handle temperature control button is achieved through three I / O ports on the MCU configured in pull-up input mode. When the button is not pressed, the I / O port is held high by an internal pull-up resistor; when the button is pressed, the I / O port is grounded to a low level. By periodically detecting the level status of these I / O ports, the MCU can accurately determine whether the button has been operated. In this scheme, the pull-up input mode eliminates the need for external pull-up resistors, simplifies circuit design, effectively suppresses interference caused by floating pins, and ensures the stability and accuracy of button status detection.

[0015] Preferably, the periodic acquisition is controlled by a set of timers configured in the MCU. These timers are used to achieve precise timing to determine the acquisition cycle. The set of timers inside the MCU is configured to generate fixed-time interrupts. Each interrupt cycle triggers a data acquisition task (including reading button and attitude sensor data), ensuring the accuracy and stability of the acquisition cycle and avoiding time drift and inaccuracy problems that may result from relying solely on software delays.

[0016] Preferably, the collected data is updated to the data buffer, including: at the arrival of each collection period, the MCU first updates the key state, then reads the attitude instrument sensor data, and combines the data in the order of key state first, attitude instrument data second, and updates to the data buffer. At each collection period, the MCU strictly follows the order of updating the key state first, then reading the attitude instrument data, and combines the two into a data packet in this fixed order, and writes it to the shared buffer. This formatted processing makes the data have a clear structure, so that the MCU and the host device do not need additional synchronization protocol, and the host device can obtain a set of time-aligned, complete key and attitude snapshot data every time it reads, greatly simplifying the analysis logic of the host device, improving communication efficiency and the real-time performance of the overall system response.

[0017] Preferably, the inclination angle of the handle and the stationary time are determined by the host device after reading the attitude instrument sensor data from the data buffer through I2C communication. The judgment logic of whether the handle is in a stationary state is not completed in the MCU of the handle, but is analyzed and decided by the external host device after reading the attitude instrument data in the data buffer through I2C, combining its own algorithm, so that the relatively complex motion state analysis algorithm is run in the host device with stronger processing capacity, reducing the computational burden of the MCU in the handle, enabling it to focus more on real-time tasks such as data collection and communication, and helping to optimize system resource allocation.

[0018] Preferably, when the handle is woken up from the sleep mode, the process of periodic collection, data update and sleep judgment starts again. When the handle is woken up due to movement or operation, the process of periodic collection, data update and sleep judgment starts again, and returns to the normal active monitoring state, ensuring that after the wake-up state is switched, the monitoring of the use state can be immediately restored.

[0019] Preferably, the judgment of the tilt angle of the handle and whether the stationary time reaches the preset state comprises: the master device periodically reads the updated key state and attitude sensor data in the data buffer through the I2C communication interface; for each read data, whether the first condition and the second condition are satisfied at the same time is judged, the first condition is that the key state indicates that the temperature control key is not pressed; the second condition is that the attitude sensor data indicates that the acceleration of the handle is lower than the preset motion threshold; if the first condition and the second condition are satisfied at the same time, it is determined that the handle is in an effective stationary state at the current data acquisition moment, and the counting is accumulated once; if the accumulated duration of the effective stationary state reaches the preset time, it is determined that the handle is in a stationary state for more than a preset time. In the scheme, only when the two conditions of no key operation (the first condition) and the motion amount below the threshold (the second condition) are satisfied in the continuous monitoring period, and the accumulated time reaches the standard, the sleep is triggered, which effectively avoids the false judgment in the vibration environment only by the attitude data, avoids the idle state that cannot be identified by the key data although the movement is not operated, improves the accuracy and intelligent level of the sleep judgment, more accurately distinguishes the two scenes of short pause in work and real idle which are similar in surface but different in nature, reduces the false sleep (affects use) and the sleep without sleep (causes safety hazard), and makes the autonomous sleep function truly reliable, practical and intelligent.

[0020] Embodiment two See Figures 1-7The embodiment provides an electric soldering iron which uses the self-sleeping and soldering iron bit adapting method of the electric soldering iron in the above embodiment. The electric soldering iron comprises a handle 1 and a soldering iron bit 2; an installation cavity for inserting the soldering iron bit 2 is formed in the handle 1; the soldering iron bit 2 comprises an outer tube 21 sleeving a heating wire 22 and a thermocouple 23 and a welding nozzle 24 arranged at one end of the outer tube 21; the outer tube 21 is provided with a contact point 210 of the heating wire and the thermocouple, a positive pole 211 of the heating wire and a temperature measuring point 212 of the thermocouple; the temperature measuring point 212 of the thermocouple measures the heating temperature of the soldering iron bit 2 to obtain a heating temperature signal of the soldering iron bit 2; a mainboard 3 is arranged in the installation cavity and electrically connected with a host; the mainboard 3 is provided with a first elastic contact 30, a second elastic contact 31 and a third elastic contact 32 electrically connected with the mainboard 3; when the soldering iron bit 2 is inserted into the installation cavity, the first elastic contact 30, the second elastic contact 31 and the third elastic contact 32 jointly limit and fix the soldering iron bit 2 and respectively correspond to electrically connect the contact point 210 of the heating wire and the thermocouple, the positive pole 211 of the heating wire and the temperature measuring point 212 of the thermocouple; the third elastic contact 32 transmits the heating temperature signal to the host through the mainboard 3; the second elastic contact 31 electrically connects the host with the positive pole 211 of the heating wire through the mainboard 3; the host controls the heating of the heating wire 22; the mainboard 3 controls the heating wire 22 to stop heating when the heating temperature of the soldering iron bit 2 reaches the heating temperature set by the host according to the heating temperature signal.

[0021] In the embodiment, the handle of the electric soldering iron comprises the handle 1 provided with the installation cavity and the mainboard 3 arranged in the installation cavity. The soldering iron bit 2 comprises the outer tube 21 provided with the welding nozzle 24, the contact point 210 of the heating wire and the thermocouple, the positive pole 211 of the heating wire and the temperature measuring point 212 of the thermocouple. The mainboard 3 is provided with the first elastic contact 30, the second elastic contact 31 and the third elastic contact 32; when the soldering iron bit 2 is inserted into the installation cavity, the three contacts jointly limit and fix the soldering iron bit 2 and respectively correspond to electrically connect the negative pole of the heating wire 22 and the thermocouple 23, the positive pole 211 of the heating wire and the temperature measuring point 212 of the thermocouple, so that one handle can adapt to various types of soldering iron bits 2, without the need of multiple handles, and the single handle can be universally adapted to various types of soldering iron bits 2, which is convenient to use.

[0022] In addition, in the specific structure of the handle, the traditional fastening nut, locking nut and other complex mechanical fixing components can be omitted, the number of parts is reduced, the production cost and assembly difficulty are reduced. The elastic contact simultaneously bears the electrical connection and mechanical fixing functions, ensures the stability of plugging and the reliability of electrical contact.

[0023] Preferably, the first elastic contact 30, the second elastic contact 31 and the third elastic contact 32 are all crown springs. Crown springs are crown-shaped springs, having annular elasticity and multi-contact structure. When the iron tip 2 is inserted, different crown springs are elastically deformed to tightly wrap the corresponding contact positions (the contact points 210 of the heating wire and the thermocouple, the positive electrode 211 of the heating wire and the temperature measuring point 212 of the thermocouple) of the outer tube 21 of the iron tip 2, thereby reducing the contact resistance and ensuring stable current and signal transmission. The elastic structure can withstand repeated plugging and unplugging, reduce wear and tear, and prolong the service life of the handle and the iron tip 2.

[0024] Preferably, the handle 1 comprises a lower shell 10 and an upper shell 11; the lower shell 10 is detachably connected with the upper shell 11, and the interiors of the lower shell 10 and the upper shell 11 after connection form the mounting cavity. The handle 1 is divided into the lower shell 10 and the upper shell 11, which can be detachably connected by buckling, screws or the like, and the interiors of the two shells form the mounting cavity after combination. The detachable structure facilitates the installation, replacement or maintenance of the internal components such as the main board 3.

[0025] Preferably, the main board 3 is installed in the mounting cavity, and both ends of the main board 3 extend into the interiors of the lower shell 10 and the upper shell 11, respectively. The main board 3 is integrally installed in the mounting cavity, and both ends of the main board 3 extend into the interior spaces of the lower shell 10 and the upper shell 11, respectively, and can be fixed by positioning grooves or fixing members or the like. The extension layout of the main board 3 fully utilizes the interior space of the handle, making the structure more compact.

[0026] Preferably, the handle 1 further comprises a wire sleeve 12, the wire sleeve 12 is detachably connected with the upper shell 11, and the interior of the wire sleeve 12 is provided with a main machine wire, the main machine wire is electrically connected with the main board 3, and is used for electrically connecting with the main machine to provide power of the main machine to the main board 3. The wire sleeve 12 is connected with the upper shell 11, one end of the internal main machine wire is connected with the main board 3, and the other end is connected with the main machine. The wire sleeve 12 is detachable (such as screw or buckle connection) with the upper shell 11, the wire sleeve 12 fixes the main machine wire to prevent internal connection from loosening due to pulling.

[0027] Preferably, the upper shell 11 comprises a first shell 110 and a second shell 111; the first shell 110 and the second shell 111 are buckled by buckling; the first shell 110 is provided with a temperature control button 13, and the temperature control button 13 is electrically connected with the main board 3. The user can operate the button to control the temperature of the iron tip 2. The buckling mode can reduce the use of screws and speed up the production. The temperature control button 13 is integrated on the surface of the handle, which is convenient for the user to operate.

[0028] Preferably, the temperature setting range interval of different types of iron tip in the multi-type iron tip is 100-450℃. The welding tip 24 of the iron tip 2 is a welding tip 24 of one shape or a welding tip 24 of multiple shapes. The welding tip 24 (iron tip 2 tip) of the iron tip 2 can be designed as different shapes (such as a pointed head, a flat head, a knife head, etc.), and the user selects according to the welding scene.

[0029] It should be noted that the above embodiments are only the preferred specific embodiments of the present application, and the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for autonomous sleep and bit tip adaptation of an electric soldering iron, characterized in that, The application relates to a soldering iron handle and a control method thereof. The soldering iron handle comprises a soldering tip, a handle and a mainboard, wherein the soldering tip is inserted into the installation cavity of the handle, the soldering tip comprises an outer tube sleeving a heating wire and a thermocouple, a welding nozzle arranged at one end of the outer tube, a contact point of the heating wire and the thermocouple arranged on the outer tube, a positive electrode of the heating wire and a temperature measuring point of the thermocouple, the temperature measuring point of the thermocouple measures the heating temperature of the soldering tip to obtain a heating temperature signal of the soldering tip, the first elastic contact, the second elastic contact and the third elastic contact on the mainboard of the handle are used to limit and fix the soldering tip and electrically connect the contact point of the heating wire and the thermocouple, the positive electrode of the heating wire and the temperature measuring point of the thermocouple, respectively, the third elastic contact transmits the heating temperature signal to a host computer through the mainboard, and the second elastic contact electrically connects the host computer and the positive electrode of the heating wire through the mainboard. The heating of the heating wire is controlled by the host computer, the heating of the heating wire is stopped when the heating temperature of the soldering tip reaches the heating temperature set by the host computer, the key state of a temperature control button on the handle and the attitude sensor data in the handle are periodically collected, the collected data are updated to a data buffer, the inclination angle and the static time of the handle are judged based on the data in the data buffer, and the electric soldering iron enters the sleep mode, thereby achieving automatic sleep. The step of periodically collecting is executed by an MCU, a group of hardware I2C interfaces of the MCU are configured as slave modes, and the data in the data buffer are read by a master device.

2. The method of claim 1, wherein the method further comprises: determining whether the bit temperature is less than a predetermined temperature threshold; and if the bit temperature is less than the predetermined temperature threshold, then determining whether the bit temperature is less than a predetermined temperature threshold for the bit temperature. The MCU is also configured with a group of GPIO interfaces simulating I2C master modes, the GPIO interfaces are configured as open-drain outputs, are switched to input states when the attitude sensor data need to be read, and the data of the attitude sensor are read by the simulated I2C master.

3. The method of claim 2, wherein the method further comprises: The key state of the handle temperature control button is collected periodically by three IO ports of the MCU configured as pull-up input modes.

4. The method of claim 2, wherein the method further comprises: determining whether the bit temperature is less than the threshold temperature; and if the bit temperature is less than the threshold temperature, then determining whether the bit temperature is less than the threshold temperature by a predetermined amount. The periodic collection is controlled by a group of timers of the MCU, and the timers are used for precise timing to determine the collection period.

5. The method of claim 2, wherein the method further comprises: determining whether the bit temperature is less than the threshold temperature; and if the bit temperature is less than the threshold temperature, then determining whether the bit temperature is less than the threshold temperature by a predetermined amount. When the collected data are updated to the data buffer, the MCU firstly updates the key state, then reads the attitude sensor data, and combines and updates the data to the data buffer in the order of the key state and the attitude sensor data.

6. The method of claim 2, wherein the method further comprises: The inclination angle and the static time of the handle are judged by the master device after the attitude sensor data are read from the data buffer through I2C communication.

7. The self-sleep mode of the soldering iron and the method for adapting the soldering tip as described in claim 6, characterized in that, When the handle is woken up from the sleep mode, the processes of periodic collection, data updating and sleep judgment are restarted.

8. The method of claim 6, wherein the method further comprises: ​ 9. The method of claim 1, wherein the method further comprises: determining whether the bit temperature is below a threshold temperature; and if the bit temperature is below the threshold temperature, then determining whether the bit temperature is below a threshold temperature for the bit temperature. The judgment of the tilt angle of the handle, the static time whether reaches the preset state, includes: the main equipment reads the updated key state and the attitude instrument sensor data in the data buffer through the I2C communication interface periodically;For each reading data, judge whether the first condition and the second condition are satisfied simultaneously, the first condition is: the key state indicates that the temperature control key is not pressed;The second condition is: the attitude instrument sensor data indicates that the acceleration of the handle is lower than the preset motion threshold;If the first condition and the second condition are satisfied simultaneously, it is determined that the handle is in an effective static state at the current data acquisition time, and the counting is accumulated once;If the accumulated duration of the effective static state reaches the preset time, it is determined that the handle is in a static state for more than a preset time.

10. An electric soldering iron, characterized in that The electric iron uses the autonomous hibernation and iron tip adaptation method of the electric iron according to any one of claims 1-9.

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