Electric welding machine switch control circuit and electric welding machine
By using the switch control circuit of potentiometer and microcontroller unit in the welding machine, the design that only requires two connecting lines is used to solve the problem of traditional welding machines relying on contact switches, achieving dual optimization of reducing costs and improving stability.
Patent Information
- Application Number
- CN202421768250.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The remote control solution of traditional welding machines relies on contact switches, resulting in the need of replacement and optimization under the modern trend of pursuing cost-effectiveness and simplified design.
It provides a switch control circuit for welding machine, which can be connected by using a potentiometer and a microcontroller unit to only require two connecting lines, simplifies the hardware structure, and detects the voltage on the potentiometer through the microcontroller unit for start-stop control.
It achieves the reduction of manufacturing costs and improves the stability of use, simplifies structural design, reduces potential poor contact or short-circuit fault points, and reduces subsequent maintenance and repair costs.
Smart Images
Figure CN222806352U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electric welding machines, and in particular to an electric welding machine switch control circuit and an electric welding machine. Background Art
[0002] In recent years, in order to adapt to industrial development and meet people's life needs, electric welding machines have developed rapidly.
[0003] When it comes to remote control of welding machines, traditional solutions usually rely on contact switches to start and stop welding operations. This traditional solution is gradually facing the need for replacement and optimization under the modern trend of pursuing cost-effectiveness and simplified design.
[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content
[0005] Based on this, the embodiment of the present application provides a welding machine switch control circuit and an electric welding machine, which can achieve dual optimization in reducing manufacturing costs and improving usage stability.
[0006] According to some embodiments, the present application provides, on one hand, a welding machine switch control circuit, comprising:
[0007] A potentiometer, wherein a first fixed end of the potentiometer is grounded via a first connecting line, and a second fixed end of the potentiometer is connected to an operating voltage;
[0008] A micro control unit, wherein a detection port of the micro control unit is connected to an adjustment end of the potentiometer via a second connecting line.
[0009] In some embodiments, the first fixed end of the potentiometer is grounded via a ground terminal of the micro control unit.
[0010] In some embodiments, the micro control unit includes an analog-to-digital converter, and the detection port of the micro control unit includes an input end of the analog-to-digital converter.
[0011] In some embodiments, the welding machine switch control circuit further includes an electrical connector;
[0012] Wherein, the first connecting line and the second connecting line are inserted into the electrical connector.
[0013] In some embodiments, the electrical connector comprises an aviation plug connector.
[0014] In some embodiments, the welding machine switch control circuit further includes:
[0015] A voltage-dividing resistor, one end of which is connected to the working voltage, and the other end of which is connected to the detection port of the microcontroller unit.
[0016] In some embodiments, the micro control unit includes a welding machine main control chip.
[0017] In some embodiments, the micro control unit is connected to a peripheral circuit.
[0018] In some embodiments, the potentiometer comprises a foot-operated potentiometer.
[0019] According to some embodiments, the present application further provides an electric welder on the other hand, comprising the electric welder switch control circuit provided by the aforementioned embodiment; the start and stop states of the electric welder are controlled by the electric welder switch control circuit.
[0020] The welding machine switch control circuit and welding machine provided by the present application can / at least have the following advantages:
[0021] In the embodiment of the present application, the potentiometer and the microcontroller unit can be connected by only two connecting wires (i.e., the first connecting wire and the second connecting wire), and the hardware structure is simple, which is conducive to reducing the manufacturing cost; and the required components are few, which reduces the potential poor contact or short circuit failure points, thereby improving the stability of use and reducing the subsequent maintenance and repair costs. Therefore, the embodiment of the present application achieves dual optimization in reducing the manufacturing cost and improving the stability of use.
[0022] The embodiment of the present application can be applied to start and stop control of an electric welder. The potentiometer and the microcontroller unit are connected by the first connecting wire and the second connecting wire, and the voltage loaded on the potentiometer can be detected by the microcontroller unit to obtain the resistance detection value of the potentiometer, and whether to start the electric welder is determined according to the resistance detection value. Compared with the solution that at least five connecting wires are required to start and stop the electric welder in the traditional electric welder control circuit, the embodiment of the present application significantly reduces the number of required connecting wires, and effectively simplifies the structural design without affecting the control effect.
[0023] Other advantages, objectives and features of the present application will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.
[0025] Figure 1 This is a structural block diagram of a welding machine switch control circuit in some embodiments of the present application.
[0026] Reference numerals:
[0027] VR Potentiometer MCU Microcontroller Unit
[0028] ADC analog-to-digital converter R voltage divider resistor
[0029] 100 electrical connector 101 first connecting line
[0030] 102 Second connection line DETAILED DESCRIPTION
[0031] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0033] It is understood that the terms "first", "second", etc. used in this application can be used herein to describe various parts, but these parts are not limited by these terms. These terms are only used to distinguish a first part from another part. For example, without departing from the scope of this application, a first fixed end can be referred to as a second fixed end, and similarly, a second fixed end can be referred to as a first fixed end, but the two are not the same fixed end.
[0034] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.
[0035] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that when the terms "consisting of" and / or "comprising" are used in this specification, the presence of the features, integers, steps, operations, elements and / or parts can be determined, but the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups is not excluded. At the same time, when used herein, the term "and / or" includes any and all combinations of the relevant listed items.
[0036] When it comes to remote control of welding machines, traditional solutions usually rely on contact switches to start and stop welding operations. This traditional solution is gradually facing the need for replacement and optimization under the modern trend of pursuing cost-effectiveness and simplified design.
[0037] In view of the shortcomings of the related art, the embodiments of the present application provide a welding machine switch control circuit and a welding machine, which can achieve dual optimization in terms of reducing manufacturing costs and improving use stability. The details will be described in the subsequent embodiments.
[0038] According to some embodiments, the present application provides a welding machine switch control circuit. Figure 1 The welding machine switch control circuit may specifically include a potentiometer VR and a micro control unit MCU.
[0039] The potentiometer VR has a first fixed end, a second fixed end and an adjustment end. By adjusting the position of the adjustment end, a variable resistance value can be generated between the first fixed end and the second fixed end, thereby adjusting the voltage across the two ends of the potentiometer VR.
[0040] Specifically to the embodiment of the present application, Figure 1 As shown, the first fixed end of the potentiometer VR is grounded via a first connecting line 101 , and the second fixed end of the potentiometer VR is connected to a working voltage VCC; the detection port of the microcontroller unit MCU is connected to the adjustment end of the potentiometer VR via a second connecting line 102 .
[0041] In the embodiment of the present application, the potentiometer VR and the microcontroller unit MCU can be connected by only two connecting wires (i.e., the first connecting wire 101 and the second connecting wire 102), and the hardware structure is simple, which is conducive to reducing the manufacturing cost; and the required components are few, which reduces the potential poor contact or short circuit fault points, thereby improving the stability of use and reducing the subsequent maintenance and repair costs. Therefore, the embodiment of the present application achieves dual optimization in reducing the manufacturing cost and improving the stability of use.
[0042] As an example, the embodiment of the present application can be applied to start and stop control of an electric welding machine. The first connecting line 101 and the second connecting line 102 are used to connect the potentiometer VR and the microcontroller unit MCU. The voltage loaded on the potentiometer VR can be detected by the microcontroller unit MCU, and the resistance detection value of the potentiometer VR is obtained according to the voltage. The resistance detection value is compared with the initial resistance value of the potentiometer VR to determine whether to start the electric welding machine. Compared with the solution that at least five connecting lines are required in the traditional electric welding machine control circuit to start and stop the electric welding machine, the embodiment of the present application significantly reduces the number of required connecting lines, and effectively simplifies the structural design without affecting the control effect.
[0043] In addition, compared with the solution in the traditional electric welding machine control circuit that relies on a contact switch to start and stop the welding operation, the embodiment of the present application does not require the use of additional connecting wires to connect the contact switch.
[0044] It can be understood that the connecting wire involved in the embodiments of the present application can be any conductive cable with an electrical connection function.
[0045] Please continue reading Figure 1 In some embodiments, the first fixed end of the potentiometer VR can be grounded via the ground end of the microcontroller MCU. In this way, it not only simplifies the structural design, reduces the complexity of the ground loop and cable connection in the circuit, helps to reduce the difficulty of design and debugging, and improves the reliability of use, but also ensures that the reference voltage of the potentiometer VR is consistent with the reference voltage of the microcontroller MCU, which helps to eliminate the measurement error caused by the difference in ground potential, thereby also improving the measurement accuracy of the microcontroller MCU.
[0046] Please continue reading Figure 1 In some embodiments, the microcontroller unit MCU may include an analog-to-digital converter ADC; based on this, the detection port of the microcontroller unit MCU may include an input end of the analog-to-digital converter ADC.
[0047] As an example, the function of obtaining the resistance detection value through the microcontroller unit MCU and comparing the resistance detection value with the initial resistance value of the potentiometer VR to start the welding machine can be implemented by the following hardware or a combination thereof:
[0048] For example, the built-in mathematical operation module of the MCU can be used to calculate the corresponding resistance detection value according to the voltage loaded on the potentiometer VR. Another example is the analog-to-digital converter ADC, which can be used to convert the analog signal of the resistance detection value into a digital signal, so that the built-in mathematical operation module of the MCU can process and analyze the resistance detection value.
[0049] In some embodiments, the microcontroller unit MCU compares the resistance detection value with the initial resistance value of the potentiometer VR to determine whether to start the function of the welding machine, which can be specifically configured as follows:
[0050] The resistance change is obtained according to the resistance detection value and the initial resistance value; if the resistance change exceeds the preset change threshold, the electric welder is started.
[0051] As an example, a comparator may be used to compare the measured resistance detection value with the initial resistance value to determine whether the resistance change exceeds a preset change threshold.
[0052] In some embodiments, the microcontroller unit MCU may also be configured to determine the magnitude of the welding current of the electric welder according to the magnitude of the resistance change.
[0053] As an example, a pulse width modulation (PWM) device may be used to adjust the PWM signal according to a control instruction output by a microcontroller unit MCU to achieve precise welding current control.
[0054] Please continue reading Figure 1 In some embodiments, the welding machine switch control circuit may further include an electrical connector 100 . In this embodiment, the first connecting line 101 and the second connecting line 102 may be inserted into the electrical connector 100 .
[0055] The embodiment of the present application does not specifically limit the form of the electrical connector 100. As an example, the electrical connector 100 may include an aviation plug connector, but is not limited thereto.
[0056] Please continue reading Figure 1 In some embodiments, the welding machine switch control circuit may further include a voltage dividing resistor R. One end of the voltage dividing resistor R is connected to the working voltage VCC, and the other end is connected to the detection port of the micro control unit MCU.
[0057] In the above embodiment, the voltage-dividing resistor R is connected between the operating voltage VCC and the detection port of the microcontroller unit MCU, which can ensure that when there is no other input, the detection port of the microcontroller unit MCU remains at a high level (that is, a voltage level close to the operating voltage VCC), thereby ensuring the detection stability of the detection port of the microcontroller unit MCU.
[0058] It can be understood that when the adjustment end position of the potentiometer VR changes, the voltage read by the detection port of the microcontroller unit MCU will change accordingly.
[0059] As an example, the microcontroller unit MCU may include a welding machine main control chip, which may be, for example, an STM32 series chip, but is not limited thereto.
[0060] In addition, illustratively, the microcontroller unit MCU may be connected to a peripheral circuit. It is understood that the peripheral circuit of the microcontroller unit MCU is not the focus of this application and will not be further described here.
[0061] The embodiment of the present application does not specifically limit the form of the potentiometer VR. As an example, the potentiometer VR may include a foot-operated potentiometer, but is not limited thereto.
[0062] The foot pedal potentiometer adjusts the position of the regulating end by means of a foot pedal. For example, if the resistance change detected exceeds a preset change threshold, it is determined that the foot pedal starts working at this time, thereby starting the electric welder.
[0063] According to some embodiments, the present application also provides an electric welder on the other hand, which may include the electric welder switch control circuit provided by the aforementioned embodiment, and the start and stop state of the electric welder is controlled by the electric welder switch control circuit provided by the aforementioned embodiment. Therefore, the technical effects that can be achieved by the aforementioned electric welder switch control circuit can also be achieved by the electric welder, and will not be described in detail here.
[0064] It should be noted that the functions to be implemented by the hardware in the utility model are already supported by related technologies, and the way in which the software program controls them can also be understood by referring to the prior art. The essence of the utility model is to optimize the combination of existing hardware and its connection methods for specific application scenarios to meet the adaptation needs in specific application scenarios and solve the problems raised in the background technology, but does not involve the improvement of software programs.
[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0066] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A welding machine switch control circuit, characterized in that: include: A potentiometer, wherein a first fixed end of the potentiometer is grounded via a first connecting line, and a second fixed end of the potentiometer is connected to an operating voltage; A micro control unit, wherein a detection port of the micro control unit is connected to an adjustment end of the potentiometer via a second connecting line.
2. The welding machine switch control circuit according to claim 1, characterized in that: The first fixed end of the potentiometer is grounded via a grounding end of the micro control unit.
3. The welding machine switch control circuit according to claim 1, characterized in that: The micro control unit includes an analog-to-digital converter, and the detection port of the micro control unit includes an input end of the analog-to-digital converter.
4. The welding machine switch control circuit according to claim 1, characterized in that: Also included is an electrical connector; Wherein, the first connecting line and the second connecting line are inserted into the electrical connector.
5. The welding machine switch control circuit according to claim 4, characterized in that: The electrical connector includes an aviation plug connector.
6. The welding machine switch control circuit according to claim 1, characterized in that: Also includes: A voltage-dividing resistor, one end of which is connected to the working voltage, and the other end of which is connected to the detection port of the microcontroller unit.
7. The welding machine switch control circuit according to claim 1, characterized in that: The micro control unit includes a welding machine main control chip.
8. The welding machine switch control circuit according to claim 7, characterized in that: The micro control unit is connected with a peripheral circuit.
9. The welding machine switch control circuit according to claim 1, characterized in that: The potentiometer comprises a foot-operated potentiometer.
10. An electric welding machine, characterized in that: It comprises the welding machine switch control circuit as claimed in any one of claims 1 to 9; the start and stop states of the welding machine are controlled by the welding machine switch control circuit.