CN112564068B - Protection control method and device, storage medium, controller and equipment - Google Patents
Protection control method and device, storage medium, controller and equipment Download PDFInfo
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- CN112564068B CN112564068B CN202011318726.1A CN202011318726A CN112564068B CN 112564068 B CN112564068 B CN 112564068B CN 202011318726 A CN202011318726 A CN 202011318726A CN 112564068 B CN112564068 B CN 112564068B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a protection control method and a device of a direct current fan, a computer readable storage medium, a motor controller and household appliances, wherein the protection control method of the direct current fan comprises the following steps: acquiring the ambient temperature of a direct current fan; determining a temperature interval in which the ambient temperature is located, and acquiring a corresponding current limit value according to the temperature interval in which the ambient temperature is located; and performing protection control on the direct current fan according to the obtained current limit value. Therefore, the protection control method can ensure the safe use of the direct current fan and exert the power output capacity of the direct current fan to the maximum extent, thereby improving the overall efficiency and user experience of the system.
Description
Technical Field
The invention relates to the technical field of household equipment, in particular to a protection control method of a direct current fan, a computer readable storage medium, a motor controller, household appliances and a protection control device of the direct current fan.
Background
At present, the direct current fan is widely applied to an air conditioning system, and when the load of the fan is increased due to the change of the external environment, the fan is easy to overload and heat to damage. In order to prevent overload of the direct current fan, a protection method of current limitation is generally adopted in the direct current fan in the related art, namely, a current limit value is set, and when the phase current output by the direct current fan reaches the current limit value, the rotating speed of the direct current fan is controlled to be reduced, so that the output phase current of the direct current fan is maintained in the set current limit value. However, in the protection method, the current limit value is fixed, when the temperature of the environment where the direct current fan is located is relatively low, the current which the direct current fan actually allows to output can be relatively high, but in order to ensure that the direct current fan can be safely used at the highest working temperature, the current limit value is often set to be relatively low, so that the high power output capability of the direct current fan at the low temperature cannot be fully exerted.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a protection control method for a dc fan, which can ensure the safe use of the dc fan and maximize the power output capability of the dc fan, thereby improving the overall efficiency and user experience of the system.
A second object of the present invention is to propose a computer readable storage medium.
A third object of the present invention is to propose a motor controller.
A fourth object of the present invention is to propose a home appliance.
A fifth object of the present invention is to provide a protection control device for a dc fan.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a protection control method for a dc fan, including the following steps: acquiring the ambient temperature of the direct current fan; determining a temperature interval in which the ambient temperature is located, and acquiring a corresponding current limit value according to the temperature interval in which the ambient temperature is located; and performing protection control on the direct current fan according to the obtained current limit value.
According to the protection control method of the direct current fan, firstly, the environment temperature of the direct current fan is obtained, then the temperature interval is determined according to the environment temperature, the current limit value corresponding to the interval is obtained according to the determined temperature interval, and then the direct current fan is protected and controlled according to the current limit value. Therefore, the protection control method can ensure the safe use of the direct current fan and exert the power output capacity of the direct current fan to the maximum extent, thereby improving the overall efficiency and user experience of the system.
In some examples of the present invention, the ambient temperature is divided into a plurality of temperature intervals, and each temperature interval is provided with a current limit value.
In some examples of the invention, the current limit value is inversely related to the temperature interval.
In some examples of the present invention, performing protection control on the dc fan according to the obtained current limit value includes: acquiring the working current of the direct current fan, and acquiring the rotating speed of the fan according to the working current of the direct current fan; speed adjustment is carried out according to the rotating speed of the fan and the given speed of the fan so as to generate given current; limiting the given current according to the obtained current limiting value to output a current given value; and carrying out current regulation according to the current set value and the working current of the direct current fan to generate a set voltage, and controlling the direct current fan according to the set voltage.
To achieve the above object, a second aspect of the present invention provides a computer-readable storage medium having stored thereon a protection control program for a dc fan, which when executed by a processor, implements the protection control method for a dc fan according to the above embodiment.
According to the computer readable storage medium, the processor executes the protection control program of the direct current fan stored on the storage medium, so that the power output capacity of the direct current fan can be exerted to the maximum extent while the safe use of the direct current fan is ensured, and the overall efficiency and the user experience of the system are improved.
In order to achieve the above object, an embodiment of a third aspect of the present invention provides a motor controller, which includes a memory, a processor, and a protection control program of a dc fan stored in the memory and capable of running on the processor, where the protection control program is executed by the processor, and the protection control method of the dc fan described in the above embodiment is implemented.
According to the motor controller provided by the embodiment of the invention, the processor executes the protection control program of the direct current fan stored in the memory, so that the power output capability of the direct current fan can be furthest exerted while the safe use of the direct current fan is ensured, and the overall efficiency and user experience of the system are improved.
To achieve the above object, a fourth aspect of the present invention provides an electric home appliance, which includes a memory, a processor, and a protection control program of a dc fan stored in the memory and capable of running on the processor, where the protection control program is executed by the processor, to implement the protection control method of the dc fan according to the above embodiment.
According to the household appliance provided by the embodiment of the invention, the processor executes the protection control program of the direct current fan stored in the memory, so that the power output capability of the direct current fan can be furthest exerted while the safe use of the direct current fan is ensured, and the overall efficiency and user experience of the system are improved.
In order to achieve the above object, a fifth aspect of the present invention provides a protection control device for a dc fan, where the protection control device includes a temperature detection module and a control module, where the temperature detection module is configured to detect an ambient temperature of the dc fan; the control module is used for determining a temperature interval in which the ambient temperature is located, acquiring a corresponding current limit value according to the temperature interval in which the ambient temperature is located, and performing protection control on the direct current fan according to the acquired current limit value.
The protection control device of the embodiment of the invention firstly utilizes the temperature detection module to detect the environmental temperature of the direct current fan, then utilizes the control module to determine the temperature interval where the environmental temperature is located, obtains the corresponding current limit value according to the temperature interval, and then carries out protection control on the direct current fan according to the obtained current limit value. Therefore, the protection control device of the direct current fan can ensure the safe use of the direct current fan and exert the power output capacity of the direct current fan to the maximum extent, thereby improving the overall efficiency and user experience of the system.
In some examples of the invention, the ambient temperature is divided into a plurality of temperature intervals, wherein each temperature interval is provided with a current limit value.
In some examples of the invention, the current limit value is inversely related to the temperature interval.
In some examples of the invention, the control module includes: the current detection unit is used for detecting the working current of the direct current fan; the speed observer is used for acquiring the rotating speed of the fan according to the working current of the direct current fan; the speed controller is used for carrying out speed adjustment according to the rotating speed of the fan and the given speed of the fan so as to generate given current; a current limiting unit for limiting the given current according to the obtained current limiting value to output a current given value; the current controller is used for carrying out current regulation according to the current set value and the working current of the direct current fan so as to generate a given voltage; and the voltage control unit is used for controlling the direct current fan according to the given voltage.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a flow chart of a method for protecting and controlling a DC fan according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the current limit of a DC fan according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of the current limit of a DC fan according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of the current limit of a DC fan according to another embodiment of the present invention;
FIG. 5 is a flow chart of a method of protection control of a DC fan in accordance with one embodiment of the present invention;
FIG. 6 is a block diagram of a protection control device for a DC fan according to an embodiment of the present invention;
fig. 7 is a block diagram of a protection control device of a dc fan according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes a protection control method and apparatus for a direct current fan, a computer readable storage medium, a motor controller, and a home appliance according to embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a flowchart of a protection control method of a direct current fan according to an embodiment of the present invention.
Firstly, it should be noted that the dc fan can be applied to various home appliances, such as an air conditioner, a refrigerator, etc., and the application thereof is very wide, and the performance is very important. Because of the rapid development and maturity of online shopping service, users in different places can purchase household appliances of the same variety, and because of the large difference of air indexes such as temperature, humidity and the like in different places, even in the same place, the temperature also has large difference change along with four seasons. Therefore, the performance and the working safety coefficient of the direct current fan in different working environments are required to be considered in the design process of the household electrical appliance, and the overall efficiency of the household electrical appliance is greatly reduced.
The protection control method of the direct current fan can ensure the safe use of the direct current fan and exert the power output capacity of the direct current fan to the maximum extent according to the environment temperature of the direct current fan, thereby improving the overall efficiency and user experience of the system.
As shown in fig. 1, the protection control method of the direct current fan comprises the following steps:
s10, acquiring the ambient temperature of the direct current fan.
Specifically, a temperature sensor can be arranged on the direct current fan, so that the temperature of the current environment of the direct current fan can be obtained in real time.
In some embodiments, the temperature may also be divided to obtain multiple temperature intervals, for example, a temperature below-20 ℃ is divided into a first temperature interval, -20 ℃ to 0 ℃ is a second temperature interval, 0 ℃ to 20 ℃ is a third temperature interval, and 20 ℃ or more is a fourth temperature interval.
S20, determining a temperature interval in which the ambient temperature is located, and acquiring a corresponding current limit value according to the temperature interval in which the ambient temperature is located.
It is understood that the direct current fans have different current limit values in different temperature intervals. For example, the first temperature interval corresponds to a first current limit, the second temperature interval corresponds to a second current limit, and so on. Specifically, after the current ambient temperature is obtained, it may be further determined in which temperature interval the ambient temperature is in, and then a corresponding current limit value is obtained according to the temperature interval. For example, when the obtained temperature is less than 0 ℃ and greater than-20 ℃, the temperature is in a second temperature interval, and a second current limit value corresponding to the second temperature interval is obtained; if the obtained temperature is greater than 0 ℃ and less than 20 ℃, the temperature is in a third temperature interval, and a third current limit value corresponding to the third temperature interval is obtained.
In some examples of the invention, the current limit is inversely related to the temperature interval.
Specifically, referring to fig. 2, 3 and 4, the current limit values of the direct current blower are 1 amp, 2 amps and 3 amps, respectively. It is understood that the current limit value and the temperature interval are in an inverse relation, that is, the lower the ambient temperature of the direct current fan is, the higher the current limit value is. It will be appreciated that the higher the operating current of the dc fan, the higher the heat can be generated under otherwise equivalent conditions, and therefore is more suitable for operation in a lower temperature environment. For example, if the ambient temperature is divided into three temperature intervals of-20 ℃ to 0 ℃,0 ℃ to 20 ℃ and above 20 ℃ in this embodiment, respectively, then the current limit value corresponding to-20 ℃ to 0 ℃ is 3 amperes, the current limit value corresponding to 0 ℃ to 20 ℃ is 2 amperes, and the current limit value corresponding to above 20 ℃ is 3 amperes.
In this embodiment, it may be determined whether the temperature range in which the ambient temperature is located is a range of-20 ℃ to 0 ℃, and if so, the current limit value of the dc fan is set to 3 amps; if not, judging whether the temperature interval in which the ambient temperature is located is 0-20 ℃, and if so, setting the current limit value of the direct current fan to be 2 amperes; if not, the current limit value of the DC fan is set to be 1 ampere.
S30, performing protection control on the direct current fan according to the obtained current limit value.
Specifically, after the current limit value of the direct current fan is obtained, the direct current fan can be protected and controlled according to the current limit value, so that the power output capacity of the direct current fan can be exerted to a large extent, the direct current fan can be ensured to reliably work at severe environment temperature, and the occurrence of overload damage and other conditions is avoided.
In some examples of the present invention, as shown in fig. 5, step S30, performing protection control on the dc fan according to the obtained current limit value may include the following steps:
s301, working current of the direct current fan is obtained, and fan rotating speed is obtained according to the working current of the direct current fan.
Specifically, in this embodiment, when the dc fan is in a working state, the working current of the dc fan is first obtained, and then the rotational speed of the dc fan is obtained according to the working current, which can be understood that the working current of the dc fan corresponds to the rotational speed one by one, that is, after the working current of the dc fan is obtained, the corresponding rotational speed can be obtained according to the correspondence.
S302, speed adjustment is carried out according to the rotating speed of the fan and the given speed of the fan to generate given current.
Specifically, after the rotational speed of the direct current fan is obtained, the rotational speed of the fan may be adjusted according to the rotational speed of the direct current fan and a given speed of the fan, where the given speed of the fan is a preset speed of the direct current fan. That is, after the fan speed is obtained, the speed of the fan can be adjusted according to the actual speed and the given speed of the fan, and a given current is generated at the same time. Alternatively, the speed adjustment may be performed according to the fan rotational speed and the fan given speed, by adjusting the fan speed to the fan given speed, and then detecting the current of the fan as the given current when the fan is operated at the given speed.
S303, limiting the given current according to the obtained current limiting value to output a current given value.
Specifically, after the given current of the dc fan is generated in step S302, the given current may be limited according to the current limit value of the dc fan and an output current given value is obtained, where if the given current is smaller than the current limit value, the given current is taken as the current given value; if the given current is greater than the current limit value, the current limit value is taken as the current given value.
S304, current regulation is carried out according to the current set value and the working current of the direct current fan so as to generate a set voltage, and the direct current fan is controlled according to the set voltage.
Specifically, after the current set point is determined, the current set point and the working current of the direct current fan can be adjusted according to the current set point to generate an adjusted set voltage, and finally the direct current fan is controlled according to the set voltage to complete the control of the direct current fan.
In summary, by the protection control method of the direct current fan, the power output capability of the direct current fan can be exerted to the maximum extent according to the ambient temperature of the direct current fan while the safe use of the direct current fan is ensured, so that the overall efficiency and the user experience of the system are improved.
Further, the present invention proposes a computer readable storage medium having stored thereon a protection control program of a direct current fan, which when executed by a processor implements the protection control method of a direct current fan as in the above-described embodiments.
When the protection control program of the direct current fan corresponding to the protection control method of the direct current fan stored on the computer readable storage medium is executed by the processor, the power output capacity of the direct current fan can be exerted to the maximum extent according to the ambient temperature of the direct current fan while the safe use of the direct current fan is ensured, so that the overall efficiency and the user experience of the system are improved.
Further, the invention provides a motor controller, which comprises a memory, a processor and a protection control program of the direct current fan, wherein the protection control program is stored in the memory and can run on the processor, and when the processor executes the protection control program, the protection control method of the direct current fan is realized.
The motor controller provided by the embodiment of the invention comprises the memory and the processor, and when the protection control program of the direct current fan, which is stored in the memory and corresponds to the protection control method of the direct current fan, is executed by the processor, the power output capacity of the direct current fan can be exerted to the maximum extent according to the ambient temperature of the direct current fan while the safe use of the direct current fan is ensured, so that the overall efficiency and the user experience of the system are improved.
Further, the present invention provides a home appliance, which includes a memory, a processor, and a protection control program of a dc fan stored in the memory and capable of running on the processor, where the protection control method of the dc fan is implemented when the processor executes the protection control program.
The household appliance comprises the memory and the processor, and when the protection control program of the direct current fan corresponding to the protection control method of the direct current fan stored in the memory is executed by the processor, the power output capacity of the direct current fan can be exerted to the maximum extent according to the ambient temperature of the direct current fan while the safe use of the direct current fan is ensured, so that the overall efficiency and the user experience of the system are improved.
Fig. 6 is a block diagram of a protection control device for a dc fan according to an embodiment of the present invention.
Further, as shown in fig. 6, the present invention proposes a protection control device 100 for a dc fan, where the control device 100 includes a temperature detection module 101 and a control module 102.
Firstly, it should be noted that the dc fan can be applied to various home appliances, such as an air conditioner, a refrigerator, etc., and the application thereof is very wide, and the performance is very important. Because of the rapid development and maturity of online shopping service, users in different places can purchase household appliances of the same variety, and because of the large difference of air indexes such as temperature, humidity and the like in different places, even in the same place, the temperature also has large difference change along with four seasons. Therefore, the performance and the working safety coefficient of the direct current fan in different working environments are required to be considered in the design process of the household electrical appliance, and the overall efficiency of the household electrical appliance is greatly reduced.
The protection control device of the direct current fan can ensure the safe use of the direct current fan and exert the power output capacity of the direct current fan to the maximum extent according to the environment temperature of the direct current fan, thereby improving the overall efficiency and user experience of the system.
Specifically, the temperature detection module 101 is configured to detect an ambient temperature of the dc fan; the control module 102 is configured to determine a temperature interval in which the ambient temperature is located, obtain a corresponding current limit value according to the temperature interval in which the ambient temperature is located, and perform protection control on the dc fan according to the obtained current limit value.
Specifically, the temperature detection module 101 is disposed on the dc fan, and may acquire, in real time, the temperature of the environment in which the dc fan is currently located.
In some embodiments, the temperature may also be divided to obtain multiple temperature intervals, for example, a temperature below-20 ℃ is divided into a first temperature interval, -20 ℃ to 0 ℃ is a second temperature interval, 0 ℃ to 20 ℃ is a third temperature interval, and 20 ℃ or more is a fourth temperature interval.
After determining the temperature interval in which the ambient temperature is located, the control module 102 may obtain the corresponding current limit value according to the temperature interval in which the ambient temperature is located.
It is understood that the direct current fans have different current limit values in different temperature intervals. For example, the first temperature interval corresponds to a first current limit, the second temperature interval corresponds to a second current limit, and so on. Specifically, after the current ambient temperature is obtained, it may be further determined in which temperature interval the ambient temperature is in, and then a corresponding current limit value is obtained according to the temperature interval. For example, when the obtained temperature is less than 0 ℃ and greater than-20 ℃, the temperature is in a second temperature interval, and a second current limit value corresponding to the second temperature interval is obtained; if the obtained temperature is greater than 0 ℃ and less than 20 ℃, the temperature is in a third temperature interval, and a third current limit value corresponding to the third temperature interval is obtained.
In some examples of the invention, the current limit is inversely related to the temperature interval.
Specifically, referring to fig. 2, 3 and 4, the current limit values of the direct current blower are 1 amp, 2 amps and 3 amps, respectively. It is understood that the current limit value and the temperature interval are in an inverse relation, that is, the lower the ambient temperature of the direct current fan is, the higher the current limit value is. It will be appreciated that the higher the operating current of the dc fan, the higher the heat can be generated under otherwise equivalent conditions, and therefore is more suitable for operation in a lower temperature environment. For example, if the ambient temperature is divided into three temperature intervals of-20 ℃ to 0 ℃,0 ℃ to 20 ℃ and above 20 ℃ in this embodiment, respectively, then the current limit value corresponding to-20 ℃ to 0 ℃ is 3 amperes, the current limit value corresponding to 0 ℃ to 20 ℃ is 2 amperes, and the current limit value corresponding to above 20 ℃ is 3 amperes.
In this embodiment, the control module 102 may first determine whether the temperature range in which the ambient temperature is located is a range of-20 ℃ to 0 ℃, and if so, set the current limit value of the dc fan to 3 amps; if not, judging whether the temperature interval in which the ambient temperature is located is 0-20 ℃, and if so, setting the current limit value of the direct current fan to be 2 amperes; if not, the current limit value of the DC fan is set to be 1 ampere.
After the current limit value of the direct current fan is obtained, the control module 102 can limit the current to protect and control the direct current fan, so that the power output capability of the direct current fan can be exerted to a large extent, the direct current fan can be ensured to reliably work at severe environment temperature, and the occurrence of overload damage and other conditions is avoided.
In some examples of the present invention, as shown in fig. 7, the control module 102 may include a current detection unit 1021, a speed observer 1022, a speed controller 1023, a current limiting unit 1024, a current controller 1025, and a voltage control unit 1026.
The current detection unit 1021 is used for detecting the working current of the direct current fan; the speed observer 1022 is used for obtaining the rotating speed of the fan according to the working current of the direct current fan; the speed controller 1023 is used for performing speed adjustment according to the rotating speed of the fan and the given speed of the fan so as to generate given current; the current limiting unit 1024 is configured to limit a given current according to the obtained current limiting value to output a current given value; the current controller 1025 is used for performing current adjustment according to the current set value and the working current of the direct current fan to generate a set voltage; the voltage control unit 1026 is configured to control the dc fan according to a given voltage.
Specifically, in this embodiment, when the dc fan is in the working state, the current detection unit 1021 may be used to obtain the working current of the dc fan first, and the speed observer 1022 obtains the rotation speed of the dc fan according to the working current, which can be understood that the working current of the dc fan corresponds to the rotation speed one by one, that is, after the current detection unit 1021 obtains the working current of the dc fan, the speed observer 1022 may be used to obtain the corresponding rotation speed according to the working current.
After the speed observer 1022 obtains the rotational speed of the dc fan, the speed controller 1023 may be used to adjust the rotational speed of the fan according to the rotational speed of the dc fan and a given speed of the fan, where the given speed of the fan is a preset speed of the dc fan. That is, after the fan speed is obtained, the speed controller 1023 may adjust the speed of the fan based on the fan speed and the preset speed of the dc fan, and simultaneously generate a given current. Alternatively, the speed adjustment may be performed according to the fan rotational speed and the fan given speed, by adjusting the fan speed to the fan given speed, and then detecting the current of the fan as the given current when the fan is operated at the given speed.
After the speed controller 1023 generates the given current of the dc fan, the given current may be limited by the current limiting unit 1024 according to the current limit value of the dc fan and an output current given value is obtained, where if the given current is smaller than the current limit value, the given current is taken as the current given value; if the given current is greater than the current limit value, the current limit value is taken as the current given value.
After the current limiting unit 1024 determines the current set point, the current controller 1025 may be used to adjust the current set point and the working current of the dc fan to generate an adjusted set voltage, and finally the voltage control unit 1026 is used to control the dc fan according to the set voltage, so as to complete the control of the dc fan.
In summary, by the protection control device for the direct current fan, the power output capability of the direct current fan can be exerted to the maximum extent according to the ambient temperature of the direct current fan while the safe use of the direct current fan is ensured, so that the overall efficiency and the user experience of a system are improved.
It should be noted that, other embodiments of the protection control device for a dc fan according to the embodiments of the present invention may refer to embodiments of the protection control method for a dc fan in the foregoing embodiments.
Additionally, it should be noted that the logic and/or steps represented in the flow diagrams or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. The protection control method of the direct current fan is characterized by comprising the following steps of:
acquiring the ambient temperature of the direct current fan;
determining a temperature interval in which the ambient temperature is located, and acquiring a corresponding current limit value according to the temperature interval in which the ambient temperature is located;
performing protection control on the direct current fan according to the obtained current limit value;
the protection control of the direct current fan is performed according to the obtained current limiting value, and the protection control comprises the following steps:
acquiring the working current of the direct current fan, and acquiring the rotating speed of the fan according to the working current of the direct current fan;
speed adjustment is carried out according to the rotating speed of the fan and the given speed of the fan so as to generate given current;
limiting the given current according to the obtained current limiting value to output a current given value;
current regulation is carried out according to the current set value and the working current of the direct current fan so as to generate a set voltage, and the direct current fan is controlled according to the set voltage;
wherein, carry out the speed adjustment according to fan rotational speed and fan given speed in order to produce given electric current, include: adjusting the rotating speed of the fan to be the given rotating speed of the fan, and detecting the current of the direct current fan when the direct current fan operates at the given rotating speed of the fan as the given current;
limiting the given current according to the obtained current limiting value to output a current given value, including: and when the given current is smaller than the current limiting value, the given current is taken as the current given value to be output, and when the given current is larger than the current limiting value, the current limiting value is taken as the current given value to be output.
2. The method of claim 1, wherein the ambient temperature is divided into a plurality of temperature intervals, and each temperature interval is provided with a current limit value.
3. The method of claim 2, wherein the current limit value and the temperature range are in an inverse relationship.
4. A computer-readable storage medium, on which a protection control program of a direct current fan is stored, which, when executed by a processor, implements the protection control method of a direct current fan according to any one of claims 1 to 3.
5. A motor controller, comprising a memory, a processor and a protection control program of a direct current fan stored in the memory and capable of running on the processor, wherein the protection control program is executed by the processor to implement the protection control method of the direct current fan according to any one of claims 1 to 3.
6. A household appliance, comprising a memory, a processor and a protection control program of a direct current fan stored in the memory and capable of running on the processor, wherein the protection control method of the direct current fan is realized when the processor executes the protection control program.
7. A protection control device for a direct current fan, comprising:
the temperature detection module is used for detecting the ambient temperature of the direct current fan;
the control module is used for determining a temperature interval in which the ambient temperature is located, acquiring a corresponding current limit value according to the temperature interval in which the ambient temperature is located, and performing protection control on the direct current fan according to the acquired current limit value;
wherein, the control module includes:
the current detection unit is used for detecting the working current of the direct current fan;
the speed observer is used for acquiring the rotating speed of the fan according to the working current of the direct current fan;
the speed controller is used for carrying out speed adjustment according to the rotating speed of the fan and the given speed of the fan so as to generate given current;
a current limiting unit for limiting the given current according to the obtained current limiting value to output a current given value;
the current controller is used for carrying out current regulation according to the current set value and the working current of the direct current fan so as to generate a given voltage;
the voltage control unit is used for controlling the direct current fan according to the given voltage;
wherein the speed controller is specifically configured to: adjusting the rotating speed of the fan to be the given rotating speed of the fan, and detecting the current of the direct current fan when the direct current fan operates at the given rotating speed of the fan as the given current; the current limiting unit is specifically configured to: and when the given current is smaller than the current limiting value, the given current is taken as the current given value to be output, and when the given current is larger than the current limiting value, the current limiting value is taken as the current given value to be output.
8. The protection control device of the direct current fan according to claim 7, wherein the ambient temperature is divided into a plurality of temperature intervals, and wherein each temperature interval is provided with a current limit value.
9. The protection control device of the direct current fan according to claim 8, wherein the current limit value and the temperature range are in an inverse relation.
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| CN118242772B (en) * | 2024-05-24 | 2024-08-02 | 广东万和热能科技有限公司 | DC fan starting control method and device, gas water heater and storage medium |
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