CN117212209A - Working state control method of arc welding power supply cooling fan - Google Patents
Working state control method of arc welding power supply cooling fan Download PDFInfo
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Abstract
The invention discloses a working state control method of an arc welding power supply cooling fan, which comprises the following steps: the temperature value of a temperature sensor is acquired in real time, and the temperature sensor is arranged on a radiator of the power device; calculating the temperature average value of the temperature sensor and the temperature change rate of the arc welding power supply during the power-on period; and controlling the working state of the cooling fan according to the temperature average value and the temperature change rate. The scheme can realize intelligent control of cooling of the power device, reduce temperature stress and thermal cycle fatigue of the power device, and prolong the service life of arc welding power supply equipment.
Description
Technical Field
The invention relates to the technical field, in particular to a working state control method, computing equipment and storage medium of an arc welding power supply cooling fan.
Background
At present, a cooling fan is generally adopted in an arc welding power supply to cool a corresponding power device, and the working state control method of the cooling fan mainly comprises the following steps: firstly, when an arc welding power supply is electrified, a cooling fan is started until the arc welding power supply is powered off, and the method has the defect that when a power device does not work, extra electric energy loss is generated; secondly, controlling according to the absolute temperature value of a temperature test point on the same radiator of the power device, namely starting a fan when the absolute temperature value of a detected temperature point is higher than a set value and stopping the fan when the absolute temperature value of the detected temperature point is lower than the set value; thirdly, when the arc welding power supply outputs, the cooling fan is started, when the arc welding power supply stops outputting, the cooling fan is stopped after a certain time delay, and when the temperature of the power device is low, the fan also works normally, and extra loss of electric energy can be generated.
And when the three control methods stop working in a state that the temperature of the power device is high, the temperature of the power device is fast reduced, so that the power device generates large temperature stress, and the service life of the power device is influenced.
Disclosure of Invention
In order to realize intelligent control of cooling of a power device and reduce temperature stress and thermal cycle fatigue of the power device, the scheme provides a working state control method of an arc welding power supply cooling fan, wherein the temperature of the installation position of a temperature sensor installed on a radiator of the power device is transmitted to an MCU in real time, and the temperature is a representation value of the temperature of the power device. And controlling the start, stop and rotating speed of the cooling fan according to the absolute value of the temperature representation value and the change rate of the temperature representation value.
According to a first aspect of the present invention, there is provided a method for controlling an operating state of an arc welding power supply cooling fan, comprising: the temperature value of a temperature sensor is acquired in real time, and the temperature sensor is arranged on a radiator of the power device; calculating the temperature average value of the temperature sensor and the temperature change rate of the arc welding power supply during the power-on period; and controlling the working state of the cooling fan according to the temperature average value and the temperature change rate.
Optionally, in the method for controlling the working state of the cooling fan of the arc welding power supply, the temperature value of the temperature sensor is used for representing the temperature value of the power device in the arc welding power supply, and the temperature value of the temperature sensor is acquired in real time through the data acquisition port of the main control chip.
Optionally, in the above method for controlling the operating state of the cooling fan for arc welding power supply, the temperature average value of the temperature sensor is calculated by the following formula:
wherein T is v For the temperature mean value, N is the ordinal number calculated by the temperature mean value, N is the sampling frequency of the temperature value calculated by the temperature mean value, T i The temperature value is sampled in real time.
Optionally, in the method for controlling the working state of the cooling fan of the arc welding power supply, when the arc welding power supply is powered on, the main control chip starts a timer and stores a first temperature average value at the starting time; resetting when the timer reaches the preset timing time, and storing a second temperature average value at the resetting time; calculating a temperature change value in the timing time based on the first temperature average value and the second temperature average value; the temperature change value is divided by the timing time to obtain the temperature change rate.
Optionally, in the method for controlling the working state of the cooling fan of the arc welding power supply, a temperature threshold value at which the cooling fan stops is set to be T thl The temperature threshold value of the start of the cooling fan is T thh Temperature change rate threshold T k The method comprises the steps of carrying out a first treatment on the surface of the When the temperature average value is greater than T thh Or rate of temperature change>T k When the cooling fan is started, the cooling fan is controlled; when the temperature average value is less than T thl And when the cooling fan is controlled to stop. Optionally, in the above method for controlling the operating state of the arc welding power supply cooling fan, when the temperature change rate is greater than zero, calculating the rotation speed of the cooling fan based on the temperature value of the temperature sensor and the temperature change rate; and when the temperature change rate is not more than zero, calculating the rotating speed of the cooling fan based on the temperature value of the temperature sensor.
Optionally, in the above method for controlling the operating state of the cooling fan for arc welding power supply, when the temperature change rate is greater than zero, the rotation speed of the cooling fan is calculated by the following formula:
f＝K T *(T v +K u *ΔT)
wherein K is T 、K u To adjust the coefficient T v The temperature average value of the temperature sensor is Δt, and the temperature change rate is Δt.
Optionally, in the above method for controlling the operating state of the cooling fan for arc welding power supply, when the temperature change rate is not greater than zero, the rotation speed of the cooling fan is calculated by the following formula:
f＝K T *T v
wherein K is T To adjust the coefficient T v Is the temperature average value of the temperature sensor.
According to a second aspect of the present invention there is provided a computing device comprising: at least one processor; and a memory storing program instructions, wherein the program instructions are configured to be adapted to be executed by the at least one processor, the program instructions comprising instructions for performing the above-described arc welding power source cooling fan operating state control method.
According to a third aspect of the present invention, there is provided a readable storage medium storing program instructions that, when read and executed by a computing device, cause the computing device to perform the above-described method of controlling an operation state of an arc welding power supply cooling fan.
According to the working state control method of the arc welding power supply cooling fan, provided by the invention, the starting, stopping and rotating speed of the cooling fan are correspondingly controlled according to the temperature value detected by the temperature sensor arranged on the cooling fan radiator and the temperature change rate calculated in the set time, so that the intelligent control of cooling of the power device is realized, the temperature stress and the thermal cycle fatigue of the power device are reduced, the energy consumption in the heat dissipation process is reduced, and the service life of arc welding power supply equipment is prolonged.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 illustrates a block diagram of a computing device 100 according to one embodiment of the invention;
FIG. 2 illustrates a flow diagram of a method 200 for controlling the operational status of an arc welding power source cooling fan according to one embodiment of the present invention;
FIG. 3 shows a schematic diagram of a temperature parameter calculation flow in accordance with one embodiment of the invention;
FIG. 4 illustrates a cooling fan start-up flow schematic according to one embodiment of the invention;
FIG. 5 illustrates a cooling fan stop flow schematic according to one embodiment of the invention;
FIG. 6 illustrates a cooling fan speed control flow diagram according to one embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The heat dissipation of the power device of the arc welding power supply is beneficial to improving the reliability of the whole machine and prolonging the service life of equipment. In order to realize intelligent control of cooling of the power device, the scheme provides a working state control method of an arc welding power supply cooling fan, which can reduce temperature stress and thermal cycle fatigue of the power device, prolong the service life of arc welding power supply equipment and reduce energy consumption in a heat dissipation process.
FIG. 1 illustrates a block diagram of a computing device 100 according to one embodiment of the invention. As shown in FIG. 1, in a basic configuration 102, a computing device 100 typically includes a system memory 106 and one or more processors 104. The memory bus 108 may be used for communication between the processor 104 and the system memory 106.
Depending on the desired configuration, the processor 104 may be any type of processor, including, but not limited to: a microprocessor (μp), a microcontroller (μc), a digital information processor (DSP), or any combination thereof. The processor 104 may include one or more levels of caches, such as a first level cache 110 and a second level cache 112, a processor core 114, and registers 116. The example processor core 114 may include an Arithmetic Logic Unit (ALU), a Floating Point Unit (FPU), a digital signal processing core (DSP core), or any combination thereof. The example memory controller 118 may be used with the processor 104, or in some implementations, the memory controller 118 may be an internal part of the processor 104.
Depending on the desired configuration, system memory 106 may be any type of memory including, but not limited to: volatile memory (such as RAM), non-volatile memory (such as ROM, flash memory, etc.), or any combination thereof. Physical memory in a computing device is often referred to as volatile memory, RAM, and data in disk needs to be loaded into physical memory in order to be read by processor 104. The system memory 106 may include an operating system 120, one or more applications 122, and program data 124.
In some implementations, the application 122 may be arranged to execute instructions on an operating system by the one or more processors 104 using the program data 124. The operating system 120 may be, for example, linux, windows or the like, which includes program instructions for handling basic system services and performing hardware-dependent tasks. The application 122 includes program instructions for implementing various functions desired by the user, and the application 122 may be, for example, a browser, instant messaging software, a software development tool (e.g., integrated development environment IDE, compiler, etc.), or the like, but is not limited thereto. When an application 122 is installed into computing device 100, a driver module may be added to operating system 120.
When the computing device 100 starts up running, the processor 104 reads the program instructions of the operating system 120 from the memory 106 and executes them. Applications 122 run on top of operating system 120, utilizing interfaces provided by operating system 120 and underlying hardware to implement various user-desired functions. When a user launches the application 122, the application 122 is loaded into the memory 106, and the processor 104 reads and executes the program instructions of the application 122 from the memory 106.
Computing device 100 also includes storage device 132, storage device 132 including removable storage 136 and non-removable storage 138, both removable storage 136 and non-removable storage 138 being connected to storage interface bus 134.
Computing device 100 may also include an interface bus 140 that facilitates communication from various interface devices (e.g., output devices 142, peripheral interfaces 144, and communication devices 146) to basic configuration 102 via bus/interface controller 130. The example output device 142 includes a graphics processing unit 148 and an audio processing unit 150. They may be configured to facilitate communication with various external devices such as a display or speakers via one or more a/V ports 152. Example peripheral interfaces 144 may include a serial interface controller 154 and a parallel interface controller 156, which may be configured to facilitate communication with external devices such as input devices (e.g., keyboard, mouse, pen, voice input device, touch input device) or other peripherals (e.g., printer, scanner, etc.) via one or more I/O ports 158. An example communication device 146 may include a network controller 160, which may be arranged to facilitate communication with one or more other computing devices 162 via one or more communication ports 164 over a network communication link.
The network communication link may be one example of a communication medium. Communication media may typically be embodied by computer readable instructions, data structures, program modules, and may include any information delivery media in a modulated data signal, such as a carrier wave or other transport mechanism. A "modulated data signal" may be a signal that has one or more of its data set or changed in such a manner as to encode information in the signal. By way of non-limiting example, communication media may include wired media such as a wired network or special purpose network, and wireless media such as acoustic, radio Frequency (RF), microwave, infrared (IR) or other wireless media. The term computer readable media as used herein may include both storage media and communication media. In the computing device 100 according to the invention, the application 122 comprises instructions for performing the method 200 of controlling the operating state of the arc welding power supply cooling fan of the invention.
Fig. 2 shows a flow chart of a method 200 for controlling the operation state of an arc welding power source cooling fan according to an embodiment of the invention. As shown in fig. 2, the method starts with step S210, collecting the temperature value of a temperature sensor in real time, the temperature sensor being mounted on a heat sink of a power device.
According to one embodiment of the invention, the AD data acquisition port of the main control chip can acquire the temperature value T of the temperature sensor in real time i The temperature sensor is arranged on the radiator of the power device and can represent the temperature of the power device.
When the arc welding power supply is electrified, the main control chip starts a timer and stores a first temperature average value T at the starting moment s Resetting when the timer reaches the preset timing time, and storing a second temperature average value T at the resetting time e。 The timer is reset and then re-timed, i.e. the timer is cycled.
Step S220 is then performed to calculate the temperature average value of the temperature sensor and the temperature change rate during power-up of the arc welding power supply.
The temperature average of the temperature sensor can be calculated by the following formula:
wherein T is v For the temperature average value of the temperature sensor, N is the ordinal number calculated by the temperature average value, N is the sampling frequency of the temperature value calculated by the temperature average value, T i The temperature value is sampled in real time.
Based on the first temperature mean T s And a second temperature average value T e Calculating a temperature change value delta T in the timing time; the temperature change rate is obtained by dividing the temperature change value Δt by the timing time. Assuming that the timing time is 1s, the temperature change value is equal to the temperature change rate value.
FIG. 3 shows a schematic diagram of a temperature parameter calculation flow according to one embodiment of the invention. As shown in fig. 3, after the welding equipment is powered on, the MCU of the main control chip is timedThe device is started, and the first temperature average value T at the moment is stored s After the timing time is reached, a second temperature average value T of the timing time is stored e Then the temperature change value Δt=t e -T s 。
Wherein, after the welding equipment is electrified, the AD port of the MCU acquires the temperature value T of the temperature sensor in real time i And calculates a temperature average value T of the temperature sensor v 。
Finally, step S230 is executed to control the working state of the cooling fan according to the temperature average value and the temperature change rate.
The start, stop and rotation speed adjustment of the cooling fan can be controlled according to the temperature average value and the change rate of the temperature sensor. That is, when the temperature value or the temperature change rate reaches a set cooling fan starting threshold value, the cooling fan is started; when the temperature value is lower than the set cooling fan stop threshold value, stopping the cooling fan; when the temperature change rate is greater than zero, the rotating speed of the cooling fan is determined by the temperature value of the temperature sensor and the temperature change rate; when the temperature change rate is not more than zero, the rotating speed of the cooling fan is determined by the temperature value of the sensor.
Setting the temperature threshold value for stopping the cooling fan as T thl The temperature threshold value of the start of the cooling fan is T thh Temperature change rate threshold T k The method comprises the steps of carrying out a first treatment on the surface of the When the temperature average value is greater than T thh Or rate of temperature change>T k When the cooling fan is started, the cooling fan is controlled; when the temperature average value is less than T thl And when the cooling fan is controlled to stop.
FIG. 4 illustrates a cooling fan start-up flow schematic according to one embodiment of the invention. As shown in FIG. 4, in the stopped state of the blower, the MCU compares the temperature average T v And a start threshold T thh Temperature change value Δt and temperature change threshold T k . When T is v >T thh Or DeltaT>T k And when the air cooler is started, controlling the air cooler to start.
FIG. 5 illustrates a cooling fan stop flow schematic according to one embodiment of the invention. As shown in FIG. 5, in the working state of the fan, the MCU compares the temperature average value T v And a stop threshold T thl When T v ＜T thl And when the cooling fan is controlled to stop.
FIG. 6 illustrates a cooling fan speed control flow diagram according to one embodiment of the invention. As shown in fig. 6, in the operation process of the fan, the MCU determines the temperature change state, and when Δt >0, calculates the rotation speed of the cooling fan by the following formula:
f＝K T *(T v +K u *ΔT)
wherein K is T 、K u To adjust the coefficient T v The temperature average value of the temperature sensor is Δt, and the Δt is a temperature change value.
When deltaT is less than or equal to 0, the rotating speed of the cooling fan is calculated by the following formula:
f＝K T *T v
wherein K is T To adjust the coefficient T v Is the temperature average value of the temperature sensor.
And adjusting the rotating speed of the cooling fan according to the calculated rotating speed control parameter.
According to the working state control method of the arc welding power supply cooling fan, provided by the invention, the starting, stopping and rotating speed of the cooling fan are correspondingly controlled according to the temperature value detected by the temperature sensor arranged on the cooling fan radiator and the temperature change rate calculated in the set time, so that the intelligent control of cooling of the power device is realized, the temperature stress and the thermal cycle fatigue of the power device are reduced, the energy consumption in the heat dissipation process is reduced, and the service life of arc welding power supply equipment is prolonged.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules or units or components of the devices in the examples disclosed herein may be arranged in a device as described in this embodiment, or alternatively may be located in one or more devices different from the devices in this example. The modules in the foregoing examples may be combined into one module or may be further divided into a plurality of sub-modules.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.
Furthermore, some of the embodiments are described herein as methods or combinations of method elements that may be implemented by a processor of a computer system or by other means of performing the functions. Thus, a processor with the necessary instructions for implementing the described method or method element forms a means for implementing the method or method element. Furthermore, the elements of the apparatus embodiments described herein are examples of the following apparatus: the apparatus is for carrying out the functions performed by the elements for carrying out the objects of the invention.
As used herein, unless otherwise specified the use of the ordinal terms "first," "second," "third," etc., to describe a general object merely denote different instances of like objects, and are not intended to imply that the objects so described must have a given order, either temporally, spatially, in ranking, or in any other manner.
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of the above description, will appreciate that other embodiments are contemplated within the scope of the invention as described herein. Furthermore, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter.
Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The disclosure of the present invention is intended to be illustrative, but not limiting, of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The working state control method of the arc welding power supply cooling fan is characterized by comprising the following steps of:
acquiring a temperature value of a temperature sensor in real time, wherein the temperature sensor is arranged on a radiator of a power device;
calculating the temperature average value of the temperature sensor and the temperature change rate of the arc welding power supply during the power-on period;
and controlling the working state of the cooling fan according to the temperature average value and the temperature change rate.
2. The method for controlling the operation state of a cooling fan of an arc welding power supply according to claim 1, wherein the temperature value of the temperature sensor is used for representing the temperature value of a power device in the arc welding power supply, and the temperature value of the temperature sensor is acquired in real time through a data acquisition port of a main control chip.
3. The method for controlling the operation state of an arc welding power supply cooling fan according to claim 1, wherein the temperature average value of the temperature sensor is calculated by the following formula:
wherein T is v For the temperature mean value, N is the ordinal number calculated by the temperature mean value, N is the sampling frequency of the temperature value calculated by the temperature mean value, T i The temperature value is sampled in real time.
4. The method of controlling an operation state of an arc welding power supply cooling fan according to claim 3, wherein the step of calculating a temperature average value of the temperature sensor and a temperature change rate during power-up of the arc welding power supply comprises:
when the arc welding power supply is electrified, the main control chip starts a timer and stores a first temperature average value at the starting moment;
resetting when the timer reaches the preset timing time, and storing a second temperature average value at the resetting time;
calculating a temperature change value in the timing time based on the first temperature average value and the second temperature average value;
dividing the temperature change value by the timing time to obtain a temperature change rate.
5. The method of controlling an operating state of an arc welding power supply cooling fan according to claim 1, wherein the step of controlling the operating state of the cooling fan according to the temperature average value and the temperature change rate comprises:
setting the temperature threshold value for stopping the cooling fan as T thl The temperature threshold value of the start of the cooling fan is T thh Temperature change rate threshold T k The method comprises the steps of carrying out a first treatment on the surface of the When the temperature average value is greater than T thh Or rate of temperature change>T k When the cooling fan is started, the cooling fan is controlled;
when the temperature average value is less than T thl And when the cooling fan is controlled to stop.
6. The method according to claim 5, wherein the step of controlling the operation state of the cooling fan according to the temperature average value and the temperature change rate further comprises:
when the temperature change rate is larger than zero, calculating the rotating speed of the cooling fan based on the temperature value of the temperature sensor and the temperature change rate;
and when the temperature change rate is not more than zero, calculating the rotating speed of the cooling fan based on the temperature value of the temperature sensor.
7. The method according to claim 6, wherein when the temperature change rate is greater than zero, the rotation speed of the cooling fan is calculated by the following formula:
f＝K T *(T v +K u *ΔT)
wherein K is T 、K u To adjust the coefficient T v The temperature average value of the temperature sensor is Δt, and the temperature change rate is Δt.
8. The method according to claim 6, wherein when the temperature change rate is not greater than zero, the rotation speed of the cooling fan is calculated by the following formula:
f＝K T *T v
wherein K is T To adjust the coefficient T v Is the temperature average value of the temperature sensor.
9. A computing device, comprising:
at least one processor; and a memory storing program instructions, wherein the program instructions are configured to be adapted to be executed by the at least one processor, the program instructions comprising instructions for performing the method of controlling the operating state of the arc welding power source cooling fan as claimed in any one of claims 1 to 8.
10. A readable storage medium storing program instructions that, when read and executed by a computing device, cause the computing device to execute instructions of the method of operating state control of an arc welding power source cooling fan as set forth in any one of claims 1-8.
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| CN202310998841.5A CN117212209A (en) | 2023-08-09 | 2023-08-09 | Working state control method of arc welding power supply cooling fan |
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| CN202310998841.5A CN117212209A (en) | 2023-08-09 | 2023-08-09 | Working state control method of arc welding power supply cooling fan |
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