CN111706538A - Fan protection method, device, equipment and computer storage medium - Google Patents
Fan protection method, device, equipment and computer storage medium Download PDFInfo
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- CN111706538A CN111706538A CN202010521522.1A CN202010521522A CN111706538A CN 111706538 A CN111706538 A CN 111706538A CN 202010521522 A CN202010521522 A CN 202010521522A CN 111706538 A CN111706538 A CN 111706538A
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- fan
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- rotating speed
- control mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Abstract
The invention discloses a fan protection method, a device, equipment and a computer storage medium, wherein the fan protection method comprises the following steps: determining a carrier corresponding to a fan, and carrying out fault detection on the carrier and the fan; and if the carrier and/or the fan have faults, acquiring a control mode of the fan according to the fault type of the faults, and controlling the fan to operate based on the control mode. Thereby improving the protection effect of the fan and prolonging the service life of the fan.
Description
Technical Field
The invention relates to the technical field of fan speed regulation control, in particular to a fan protection method, a terminal, equipment and a computer storage medium.
Background
With the development of scientific technology, the varieties of industrial mechanical equipment and household electrical equipment are increasing. No matter industrial mechanical equipment or household electrical equipment, the motor is one of indispensable components and parts in the equipment. The operation of the motor or equipment can be influenced by the heating phenomenon existing in the running process of the motor. Based on the current situation, the fan is usually controlled to operate at different rotating speeds so as to dissipate heat of the motor in time.
At present, the rotating speed of a fan is controlled by acquiring the temperature of the motor in real time, a fan locked-rotor detection means is designed in a built-in logic processor of the fan for detection, and when a detection result is unqualified, automatic restart of the fan after locked-rotor is realized through a hardware circuit. Therefore, how to improve the protection effect of the fan and prolong the service life of the fan becomes a technical problem to be solved urgently at present.
Disclosure of Invention
The invention mainly aims to provide a fan protection method, a fan protection device, fan protection equipment and a computer storage medium, and aims to solve the technical problems of improving the fan protection effect and prolonging the service life of a fan.
In order to achieve the above object, the present invention provides a fan protection method, including the steps of:
determining a carrier corresponding to a fan, and carrying out fault detection on the carrier and the fan;
and if the carrier and/or the fan have faults, acquiring a control mode of the fan according to the fault type of the faults, and controlling the fan to operate based on the control mode.
Optionally, the step of performing fault detection on the carrier includes:
acquiring real temperature information of the carrier, and detecting whether a real temperature value corresponding to the real temperature information is greater than or equal to a preset alarm value;
if the real temperature information is greater than or equal to a preset alarm value, determining that the carrier has a carrier temperature abnormal fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the abnormal carrier temperature fault, and controlling the fan to operate at a preset rated rotating speed according to the control mode of the fan corresponding to the abnormal carrier temperature fault.
Optionally, the step of performing fault detection on the fan includes:
collecting a fan rotating speed signal of the fan, and determining whether a rotating speed gear of the fan is a neutral gear or not;
if the rotating speed gear is a non-neutral gear, detecting whether the fan rotating speed signal carries rotating speed data or not;
if the fan rotating speed signal does not carry rotating speed data, determining that the fan has a fan speed signal loss fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fan speed signal loss fault, and controlling the fan to stop operating according to the control mode of the fan corresponding to the fan speed signal loss fault.
Optionally, the step of performing fault detection on the fan includes:
acquiring real temperature information of the carrier, and acquiring a fan rotating speed specified value corresponding to the real temperature information according to a preset temperature rotating speed corresponding table;
acquiring an actual rotating speed value of the fan, calculating an absolute difference value between the specified value of the rotating speed of the fan and the actual rotating speed value, and detecting whether the absolute difference value is greater than a preset difference value;
if the absolute difference is larger than a preset difference, determining that the fan has a fault of overlarge rotating speed deviation;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fault of the overlarge rotation speed deviation, and controlling the fan to output fan fault alarm information according to the control mode of the fan corresponding to the fault of the overlarge rotation speed deviation.
Optionally, the step of performing fault detection on the fan includes:
determining a rotating speed gear of the fan, and detecting whether the actual rotating speed value of the fan is greater than the rotating speed upper limit value of the rotating speed gear when the rotating speed gear is not in a neutral gear;
if the actual rotating speed value is larger than the rotating speed upper limit value, determining that the fan has an overspeed fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fan overspeed fault, and controlling the rotating speed gear of the fan to a preset gear according to the control mode of the fan corresponding to the fan overspeed fault.
Optionally, after the step of controlling the rotational speed gear of the fan to the preset gear according to the control mode of the fan corresponding to the fan overspeed fault, the method includes:
acquiring a new actual rotating speed value of the fan after the fan operates for a preset time period based on the preset gear, and detecting whether the new actual rotating speed value is greater than a theoretical rotating speed upper limit value corresponding to the preset gear;
and if the new actual rotating speed value is greater than the theoretical rotating speed upper limit value corresponding to the preset gear, controlling the fan to stop operating.
Optionally, if the carrier and the fan have a fault, acquiring a control mode of the fan according to a fault type of the fault, and controlling the fan to operate based on the control mode includes:
and if the carrier and the fan have faults, determining the fault type of the carrier, and controlling the fan to operate at a preset rated rotating speed according to the fault type.
In addition, to achieve the above object, the present invention also provides a fan protection device, including:
the fault detection module is used for determining a carrier corresponding to the fan and carrying out fault detection on the carrier and the fan;
and the control module is used for acquiring the control mode of the fan according to the fault type of the fault and controlling the fan to operate based on the control mode if the carrier and/or the fan have the fault.
Further, to achieve the above object, the present invention also provides a fan protecting apparatus including: a memory, a processor and a fan protection program stored on the memory and executable on the processor, the fan protection program when executed by the processor implementing the steps of the fan protection method as described above.
In addition, to achieve the above object, the present invention also provides a computer storage medium having a fan protection program stored thereon, the fan protection program implementing the steps of the fan protection method as described above when executed by a processor.
The method comprises the steps of determining a carrier corresponding to a fan, and carrying out fault detection on the carrier and the fan; and if the carrier and/or the fan have faults, acquiring a control mode of the fan according to the fault type of the faults, and controlling the fan to operate based on the control mode. The fan and/or the carrier are subjected to fault detection, the control mode of the fan is determined according to the fault type of the fault, and the fan is controlled to operate according to the control mode, so that the phenomenon that in the prior art, the fan can only be restarted when the fan stalling detection is unqualified, and the fault protection cannot be carried out when the fan or the carrier connected with the fan breaks down is avoided, the protection effect of the fan is improved, and the service life of the fan is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a fan protection device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a fan protection method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a device module of the fan protection device according to the present invention;
FIG. 4 is a schematic diagram of a fan control logic of the fan protection method according to the present invention;
FIG. 5 is a schematic diagram illustrating a process of detecting abnormal motor temperature according to the fan protection method of the present invention;
FIG. 6 is a flow chart illustrating a speed signal loss detection process of the fan protection method according to the present invention;
FIG. 7 is a schematic diagram illustrating a flow of detecting an excessive fan speed deviation according to the fan protection method of the present invention;
FIG. 8 is a flow chart of the fan overspeed detection of the fan protection method of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a fan protection device in a hardware operating environment according to an embodiment of the present invention.
The fan protection device of the embodiment of the invention can be a terminal device such as a PC or a server which is loaded with a virtualization platform.
As shown in fig. 1, the fan protecting apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be appreciated by those skilled in the art that the fan protection apparatus configuration shown in fig. 1 does not constitute a limitation of the fan protection apparatus and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a fan protection program.
In the fan protection device shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to invoke the fan protection program stored in the memory 1005 and perform the operations in the following security component's privilege configuration method embodiments.
Based on the above hardware structure, embodiments of the fan protection method of the present invention are provided as follows.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of a fan protection method of the present invention, the fan protection method includes:
step S10, determining a carrier corresponding to the fan, and performing fault detection on the carrier and/or the fan, wherein;
in this embodiment, the carrier may be a motor, or other devices such as a terminal, and in this embodiment, the motor is merely taken as an example for illustration, but is not limited to the motor. The fan is used for radiating heat of the carrier.
In this embodiment, therefore, it is necessary to determine the carrier, such as the motor, to which the fan is connected. And then carrying out fault detection on the carrier and/or the fan so as to realize the control of the operation of the fan according to the fault detection result. The control logic of the fan may be as shown in fig. 4, and the control logic of the fan may be logic-controlled by a logic program in a built-in logic processor of the fan, perform fault detection according to a logic control result, and determine a control mode of the fan, such as constant-speed operation, variable-speed operation, fault operation, and the like, according to the fault detection result. And the speed regulation control of the fan mainly comprises that the motor is matched with different fan rotating speeds at different temperatures so as to reduce the noise of the fan and the system loss and prolong the service life of the fan. And when the fan rotating speed is controlled in a closed loop mode, the collected motor temperature and the collected actual fan rotating speed information are utilized to carry out fan overspeed fault protection, fan rotating speed feedback signal loss fault protection, fan rotating speed deviation overlarge fault protection and motor temperature abnormity fault protection.
And step S20, if the carrier and/or the fan have faults, acquiring a control mode of the fan according to the fault type of the faults, and controlling the fan to operate based on the control mode.
When the carrier or the fan is found to have faults through judgment, the fault type of the faults can be directly determined, and the control strategy, namely the control mode, of the fan is determined according to the fault type. For example, when the temperature information of the motor is collected, the temperature information can be obtained according to a preset temperature sensor, that is, the real temperature information of the motor is collected through the temperature sensor, and an actual temperature value, that is, a real temperature value, corresponding to the real temperature information is determined in a preset comparison table. And detecting whether the real temperature value in the real temperature information is smaller than a preset alarm value (any alarm value preset by a user). If the real temperature value is greater than or equal to the preset alarm value, the motor temperature abnormal fault is determined to occur, and at the moment, the fan needs to be operated at a rated rotating speed (any rotating speed set by a user in advance) so as to avoid the motor fault caused by the temperature abnormal. However, if the real temperature value is smaller than the preset alarm value, subsequent fault detection can be performed. And the abnormal detection mode of the motor temperature can be as shown in fig. 5, the motor temperature is obtained, whether the temperature in the fixed time is greater than the threshold value is detected, if so, the fan is controlled to run at the rated rotating speed, the alarm processing is carried out, and if not, the normal running of the fan is continuously kept until the end.
And when the fault of a carrier (such as a motor) is detected, the fault detection can be carried out on the fan, and different operations are executed according to different fault detection results, wherein if the motor and the fan simultaneously have faults, a control strategy corresponding to the motor fault is preferentially executed. In the embodiment, the failure types of the fan at least include failures such as loss of fan speed signal, excessive fan speed, and excessive deviation of rotating speed. As shown in fig. 6, the fan speed signal loss fault detection may be implemented by, for detecting the fan speed signal loss (i.e., detecting whether the fan speed signal has a loss fault), first obtaining a fan speed, and detecting that the speed command is not 0 and the fan speed is 0, if so, adjusting the speed command to 0, and performing alarm processing, and if not, canceling the alarm until the end.
As shown in fig. 7, when detecting the excessive speed deviation of the fan, the method first obtains the fan speed, i.e., the actual speed value, then queries the correspondence table between the motor temperature and the fan speed to obtain the fan speed command value (i.e., the fan speed specified value corresponding to the true motor temperature value) required at the current temperature, calculates the difference between the fan speed command value and the actual speed value, and obtains the absolute difference, and then detects whether the absolute difference is greater than the preset difference, if so, the timer accumulation operation is required, and when the timer time in the timer reaches a certain value, the alarm prompt is performed until the end. If the rotating speed deviation is smaller than or equal to the preset rotating speed deviation, determining that the fault that the rotating speed deviation is too large is not sent, resetting the timer at the moment, and canceling the alarm until the end.
As shown in fig. 8, during the fan overspeed fault detection, the rotation speed of the fan, i.e. the actual rotation speed value, is obtained first, and then whether the rotation speed of the fan is greater than the upper limit value corresponding to the rotation speed gear (i.e. the rotation speed instruction) of the fan operation within a fixed time is detected, if so, the fan is controlled to operate at the rated rotation speed or below the rated rotation speed, an alarm is given, the timer is accumulated, and if the overspeed fault still occurs, the rotation speed instruction is reduced to 0, and the fan is stopped until the operation is finished. If the rotating speed of the fan is less than or equal to the upper limit value corresponding to the rotating speed gear of the fan in the fixed time, the timer is cleared and the alarm is cancelled.
That is, after the control mode of the fan is obtained, the fan can be controlled to operate according to the control mode, such as controlling the fan to stop operating, or controlling the fan to operate at a constant speed or at a variable speed, and the like.
It should be noted that, in this embodiment, the speed regulation control of the fan mainly matches different fan rotation speeds when the motor is at different temperatures, so as to reduce the fan noise and the system loss, and prolong the service life of the fan. When the fan rotating speed is controlled in a closed loop mode, the collected motor temperature and the collected actual fan rotating speed information are utilized to carry out fan overspeed fault protection, fan rotating speed feedback signal loss fault protection, fan rotating speed deviation overlarge fault protection and motor temperature abnormity fault protection.
In this embodiment, a carrier corresponding to a fan is determined, and fault detection is performed on the carrier and the fan; and if the carrier and/or the fan have faults, acquiring a control mode of the fan according to the fault type of the faults, and controlling the fan to operate based on the control mode. The fan and/or the carrier are subjected to fault detection, the control mode of the fan is determined according to the fault type of the fault, and the fan is controlled to operate according to the control mode, so that the phenomenon that in the prior art, the fan can only be restarted when the fan stalling detection is unqualified, and the fault protection cannot be carried out when the fan or the carrier connected with the fan breaks down is avoided, the protection effect of the fan is improved, and the service life of the fan is prolonged.
Further, based on the foregoing embodiment of the present invention, another embodiment of the fan protection method of the present invention is provided, in this embodiment, step S10 in the foregoing embodiment refines the step of performing fault detection on the carrier, and includes:
step a, acquiring real temperature information of the carrier, and detecting whether a real temperature value corresponding to the real temperature information is greater than or equal to a preset alarm value;
in this embodiment, when acquiring the temperature information of the carrier (e.g., the motor), the temperature information may be acquired according to a preset temperature sensor, that is, the temperature information of the motor is acquired through the temperature sensor, an actual temperature corresponding to the acquired temperature information is determined in a comparison table carried by the temperature sensor, and the actual temperature is used as a true temperature value of the motor (i.e., a true temperature value of the carrier). And detecting whether the real temperature value corresponding to the real temperature information is larger than a preset alarm value (any alarm value preset by a user) or not, and executing different operations according to different detection results.
And b, if the real temperature value is greater than or equal to a preset alarm value, determining that the carrier has a carrier temperature abnormal fault.
When the real temperature value is larger than or equal to the preset alarm value through judgment, the carrier can be determined to have a fault, and the carrier can be regarded as a temperature abnormal fault. However, if the real temperature value is smaller than the preset alarm value, it can be determined that the carrier temperature abnormal fault does not occur, that is, the carrier does not have the fault.
Specifically, the step of obtaining a control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode includes:
and B, acquiring a control mode of the fan corresponding to the abnormal carrier temperature fault, and controlling the fan to operate at a preset rated rotating speed according to the control mode of the fan corresponding to the abnormal carrier temperature fault.
When the carrier temperature abnormal fault is determined to exist, the control mode of the fan corresponding to the carrier temperature abnormal fault preset by a user can be obtained, and the fan is controlled to operate at the preset rated rotating speed according to the control mode of the fan corresponding to the carrier temperature abnormal fault.
In this embodiment, when the real temperature value corresponding to the real temperature information of the carrier is greater than or equal to the preset alarm value, it is determined that the carrier has a fault, and the fan is controlled to operate at the preset rated rotation speed. Therefore, the rotating speed of the fan can be controlled according to the fault of the carrier, and the fault protection effect of the fan is improved.
Further, the step of performing fault detection on the fan further includes:
step c, collecting a fan rotating speed signal of the fan, and determining whether a rotating speed gear of the fan is a neutral gear or not;
in this embodiment, the fan speed signal of the fan needs to be collected first, and the fan speed signal can be collected by using an existing conventional method, such as collecting according to a sensor. When the fan speed signal is acquired, the speed gear of the fan running at the current moment is determined, whether the speed gear of the fan running is neutral or not is detected, that is, whether the speed instruction is 0 or not is detected, and different operations are executed according to different detection results.
D, if the rotating speed gear is a non-neutral gear, detecting whether the rotating speed signal of the fan carries rotating speed data or not;
when the rotating speed gear is found to be not neutral or not neutral through judgment, namely the rotating speed instruction is not 0, whether the rotating speed signal of the fan carries rotating speed data instead of 0 needs to be detected, and different operations are executed according to different detection results. However, if the rotational speed position is a neutral position, it is determined that there is no malfunction in the fan when the fan rotational speed signal is determined to be 0.
And e, if the fan rotating speed signal does not carry rotating speed data, determining that the fan has a fan speed signal loss fault.
When the fan rotating speed signal is found not to carry rotating speed data through judgment, the fan can be determined to have a fault, and the fault type is a fan speed signal loss fault. However, if the fan speed signal carries the speed data, it can be determined that the fan speed signal has not failed to lose the fan speed signal.
Specifically, the step of obtaining a control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode includes:
and E, acquiring a control mode of the fan corresponding to the fan speed signal loss fault, and controlling the fan to stop operating according to the control mode of the fan corresponding to the fan speed signal loss fault.
When the fan is determined to have the fan speed signal loss fault, the control mode of the fan corresponding to the fan speed signal loss fault can be obtained first, the fan is controlled to stop running according to the control mode of the fan corresponding to the fan speed signal loss fault, which is set in advance by a user, the rotating speed instruction is adjusted to 0, or the rotating speed gear is adjusted to neutral, and corresponding alarm information is output.
In this embodiment, when the rotation speed gear of the fan is not neutral and the fan rotation speed signal does not carry the rotation speed data, it may be determined that the fan has a fault, and the fan is controlled to stop operating. Therefore, the rotating speed of the fan can be controlled according to the fault of the fan, and the fault protection effect of the fan is improved.
Further, the step of performing fault detection on the fan includes:
step f, acquiring real temperature information of the carrier, and acquiring a fan rotating speed specified value corresponding to the real temperature information according to a preset temperature rotating speed corresponding table;
in this embodiment, when acquiring the temperature information of the carrier (e.g., the motor), the temperature information may be acquired according to a preset temperature sensor, that is, the temperature information of the motor is acquired by the temperature sensor, an actual temperature corresponding to the acquired temperature information is determined in a data table carried by the temperature sensor, and the actual temperature is used as a real motor temperature value (i.e., a real temperature value of the carrier) of the motor. And acquiring a temperature and rotating speed corresponding table, and then sequentially matching the actual motor temperature value with each temperature value in the temperature and rotating speed corresponding table to acquire a fan rotating speed designated value corresponding to the actual motor temperature value (namely, a theoretical speed value of fan blade operation when the motor temperature is at the actual motor temperature value).
Step g, collecting an actual rotating speed value of the fan, calculating an absolute difference value between the specified value of the rotating speed of the fan and the actual rotating speed value, and detecting whether the absolute difference value is greater than a preset difference value;
after the designated value of the fan speed is obtained, the actual speed value of the fan is acquired, the difference between the fan speed value and the actual speed value is calculated, the absolute value, namely the absolute difference, is taken, whether the absolute difference is larger than the preset difference (namely, any difference set in advance by a user is used for detecting whether the fan speed deviation is too large) is detected, and the operation is executed according to different detection results. The temperature and rotation speed correspondence table may be a table having correspondence between temperature and fan rotation speed, which is set in advance by a user.
And h, if the absolute difference is larger than a preset difference, determining that the fan has a fault of overlarge rotating speed deviation.
When the absolute difference is larger than the preset difference through judgment, the fault detection result of the fan can be determined to be the fault of the overlarge rotating speed deviation. However, if the absolute difference is smaller than or equal to the preset difference, it can be determined that the fan has no fault of excessive deviation of the rotating speed.
Specifically, the step of obtaining a control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode includes:
and H, acquiring a control mode of the fan corresponding to the fault of the overlarge rotation speed deviation, and controlling the fan to output fan fault alarm information according to the control mode of the fan corresponding to the fault of the overlarge rotation speed deviation.
When the fault that the rotating speed deviation is too large is determined to exist in the fan, the control mode of the fan corresponding to the fault that the rotating speed deviation is too large and set by a user in advance can be obtained, the fan is controlled to operate according to the control mode, and if the fan is controlled to operate at a preset rotating speed (any rotating speed set by the user in advance), fan fault alarm information is output.
In this embodiment, the specified value of the rotation speed of the fan is determined according to the real temperature information of the carrier, the absolute difference between the specified value of the rotation speed of the fan and the actual rotation speed value of the fan is calculated, when the absolute difference is greater than the preset difference, the fan is determined to have a fault, and the fault alarm information of the fan is output, so that the fault protection effect of the fan is improved.
Further, the step of performing fault detection on the fan includes:
step k, determining a rotating speed gear of the fan, and detecting whether the actual rotating speed value of the fan is greater than the rotating speed upper limit value of the rotating speed gear when the rotating speed gear is not in neutral;
in this embodiment, the rotation speed gear at which the fan operates at the current time is determined, whether the rotation speed gear at which the fan operates is in a neutral gear is detected, that is, whether the rotation speed command is 0 is detected, if the rotation speed gear is not in the neutral gear but is not in the neutral gear, a rotation speed range corresponding to the rotation speed gear needs to be acquired, a maximum value is acquired from the rotation speed range and is used as an upper limit value of the rotation speed corresponding to the rotation speed gear, whether an actual rotation speed value is greater than the upper limit value of the rotation speed corresponding to the rotation speed gear is detected, and different operations are executed according.
And m, if the actual rotating speed value is greater than the rotating speed upper limit value, determining that the fan has an overspeed fault.
And when the actual rotating speed value is found to be larger than the rotating speed upper limit value corresponding to the rotating speed gear through judgment, the fan can be considered to have the fan overspeed fault at the moment, but if the actual rotating speed value is smaller than or equal to the rotating speed upper limit value corresponding to the rotating speed gear, the fan is determined not to have the fault.
Specifically, the step of obtaining a control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode includes:
and M, acquiring a control mode of the fan corresponding to the fan overspeed fault, and controlling the rotating speed gear of the fan to a preset gear according to the control mode of the fan corresponding to the fan overspeed fault.
When the fan is determined to have the fan overspeed fault, the control mode of the fan corresponding to the fan overspeed fault preset by a user can be obtained, whether the rotating speed gear of the fan is the lowest gear at the moment (namely the rotating speed of the fan is the minimum at the moment) is determined based on the control mode, if yes, the operation of the fan is directly stopped, the rotating speed gear of the fan is adjusted to be neutral, and the rotating speed instruction is adjusted to be 0. If the rotating speed gear is not the lowest gear, the rotating speed gear of the fan is reduced to a preset gear (the preset gear is any one lower than the currently running rotating speed gear), fault detection is carried out on the fan to determine a fan fault detection result, and different fan protection strategies are executed based on different detection results.
In this embodiment, when the rotating speed gear of the fan is not the neutral gear and the actual rotating speed value is greater than the rotating speed upper limit value of the rotating speed gear, it is determined that the fan has a fault, and the rotating speed gear of the fan is reduced to a preset gear, so that the rotating speed of the fan can be controlled according to the fault of the fan, and the protection effect of the fan is improved.
Further, after the step of determining that the fan has a fault and reducing the rotational speed gear of the fan to a preset gear if the actual rotational speed value is greater than the rotational speed upper limit value, the method includes:
n, acquiring a new actual rotating speed value of the fan after the fan operates for a preset time period based on the preset gear, and detecting whether the new actual rotating speed value is greater than a theoretical rotating speed upper limit value corresponding to the preset gear;
in this embodiment, different rotational speed gears correspond to different fan rotational speed ranges, so after the predetermined gear is determined, the fan rotational speed range corresponding to the predetermined gear needs to be acquired, and the maximum value is acquired in the fan rotational speed range and serves as the theoretical rotational speed upper limit value corresponding to the predetermined gear. And after the fan runs for a preset time period (a time period preset by a user) at a preset gear, namely when the rotating speed of the fan is stable at the moment, acquiring the actual rotating speed (namely a new actual rotating speed value) of the fan, and detecting whether the new actual rotating speed value is greater than the theoretical rotating speed upper limit value. And then different operations are executed based on different detection results.
And p, if the new actual rotating speed value is larger than the theoretical rotating speed upper limit value corresponding to the preset gear, controlling the fan to stop operating.
When the new actual rotating speed value is found to be larger than the theoretical rotating speed upper limit value through judgment, the fact that the fan overspeed detection result is the fan overspeed can be directly determined, at the moment, the fan can be controlled to stop running according to a fan protection strategy corresponding to the fan overspeed, and a corresponding alarm prompt is output to inform a user. If the new actual rotating speed value is less than or equal to the theoretical rotating speed upper limit value, the fan is determined not to have the fan overspeed fault.
In this embodiment, when the new actual rotation speed value of the fan is greater than the theoretical rotation speed upper limit value corresponding to the preset gear, the fan is controlled to stop operating. Therefore, the rotating speed of the fan can be controlled according to the fault of the fan, and the protection effect of the fan is improved.
Further, if the carrier and the fan have a fault, acquiring a control mode of the fan according to the fault type of the fault, and controlling the fan to operate based on the control mode, wherein the step comprises the following steps:
and step x, if the carrier and the fan have faults, determining the fault type of the carrier, and controlling the fan to operate at a preset rated rotating speed according to the fault type.
In this embodiment, when it is determined that both the carrier and the fan have a fault, the operation of the fan may be directly controlled according to the fault type of the carrier, that is, the fault type of the carrier is determined first, for example, when the motor has an abnormal temperature fault, the fan may be directly controlled to operate at a preset rated rotation speed according to a control strategy corresponding to the abnormal temperature fault of the motor.
In the embodiment, when the carrier and the fan have faults, the fan is directly controlled to operate at the preset rated rotating speed according to the fault type of the carrier, so that the fault protection of the carrier is realized, and the protection effect of the fan is improved.
Referring to fig. 3, the present invention further provides a fan protection device, in this embodiment, the fan protection device includes:
the fault detection module A10 is used for determining a carrier corresponding to a fan and performing fault detection on the carrier and the fan;
and the control module A20 is used for acquiring a control mode of the fan according to the fault type of the fault and controlling the fan to operate based on the control mode if the carrier and/or the fan have the fault.
Optionally, the fault detection module a10 is further configured to:
acquiring real temperature information of the carrier, and detecting whether a real temperature value corresponding to the real temperature information is greater than or equal to a preset alarm value;
if the real temperature value is greater than or equal to a preset alarm value, determining that the carrier has a carrier temperature abnormal fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the abnormal carrier temperature fault, and controlling the fan to operate at a preset rated rotating speed according to the control mode of the fan corresponding to the abnormal carrier temperature fault.
Optionally, the fault detection module a10 is further configured to:
collecting a fan rotating speed signal of the fan, and determining whether a rotating speed gear of the fan is a neutral gear or not;
if the rotating speed gear is a non-neutral gear, detecting whether the fan rotating speed signal carries rotating speed data or not;
if the fan rotating speed signal does not carry rotating speed data, determining that the fan has a fan speed signal loss fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fan speed signal loss fault, and controlling the fan to stop operating according to the control mode of the fan corresponding to the fan speed signal loss fault.
Optionally, the fault detection module a10 is further configured to:
acquiring real temperature information of the carrier, and acquiring a fan rotating speed specified value corresponding to the real temperature information according to a preset temperature rotating speed corresponding table;
acquiring an actual rotating speed value of the fan, calculating an absolute difference value between the specified value of the rotating speed of the fan and the actual rotating speed value, and detecting whether the absolute difference value is greater than a preset difference value;
and if the absolute difference is larger than a preset difference, determining that the fan has a fault of overlarge rotating speed deviation.
The step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fault of the overlarge rotation speed deviation, and controlling the fan to output fan fault alarm information according to the control mode of the fan corresponding to the fault of the overlarge rotation speed deviation.
Optionally, the fault detection module a10 is further configured to:
determining a rotating speed gear of the fan, and detecting whether the actual rotating speed value of the fan is greater than the rotating speed upper limit value of the rotating speed gear when the rotating speed gear is not in a neutral gear;
if the actual rotating speed value is larger than the rotating speed upper limit value, determining that the fan has an overspeed fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fan overspeed fault, and controlling the rotating speed gear of the fan to a preset gear according to the control mode of the fan corresponding to the fan overspeed fault.
Optionally, the fault detection module a10 is further configured to:
acquiring a new actual rotating speed value of the fan after the fan operates for a preset time period based on the preset gear, and detecting whether the new actual rotating speed value is greater than a theoretical rotating speed upper limit value corresponding to the preset gear;
and if the new actual rotating speed value is greater than the theoretical rotating speed upper limit value corresponding to the preset gear, controlling the fan to stop operating.
Optionally, the control module a10 is further configured to:
and if the carrier and the fan have faults, determining the fault type of the carrier, and controlling the fan to operate at a preset rated rotating speed according to the fault type.
The method implemented when the fan protection program running on the processor is executed may refer to each embodiment of the fan protection method of the present invention, and details thereof are not described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fan protection method is characterized by comprising the following steps:
determining a carrier corresponding to a fan, and carrying out fault detection on the carrier and the fan;
and if the carrier and/or the fan have faults, acquiring a control mode of the fan according to the fault type of the faults, and controlling the fan to operate based on the control mode.
2. The fan protection method of claim 1, wherein said step of fault detecting said carrier comprises:
acquiring real temperature information of the carrier, and detecting whether a real temperature value corresponding to the real temperature information is greater than or equal to a preset alarm value;
if the real temperature value is greater than or equal to a preset alarm value, determining that the carrier has a carrier temperature abnormal fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the abnormal carrier temperature fault, and controlling the fan to operate at a preset rated rotating speed according to the control mode of the fan corresponding to the abnormal carrier temperature fault.
3. The fan protection method of claim 1, wherein said step of detecting a failure of said fan comprises:
collecting a fan rotating speed signal of the fan, and determining whether a rotating speed gear of the fan is a neutral gear or not;
if the rotating speed gear is a non-neutral gear, detecting whether the fan rotating speed signal carries rotating speed data or not;
if the fan rotating speed signal does not carry rotating speed data, determining that the fan has a fan speed signal loss fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fan speed signal loss fault, and controlling the fan to stop operating according to the control mode of the fan corresponding to the fan speed signal loss fault.
4. The fan protection method of claim 1, wherein said step of detecting a failure of said fan comprises:
acquiring real temperature information of the carrier, and acquiring a fan rotating speed specified value corresponding to the real temperature information according to a preset temperature rotating speed corresponding table;
acquiring an actual rotating speed value of the fan, calculating an absolute difference value between the specified value of the rotating speed of the fan and the actual rotating speed value, and detecting whether the absolute difference value is greater than a preset difference value;
if the absolute difference is larger than a preset difference, determining that the fan has a fault of overlarge rotating speed deviation;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fault of the overlarge rotation speed deviation, and controlling the fan to output fan fault alarm information according to the control mode of the fan corresponding to the fault of the overlarge rotation speed deviation.
5. The fan protection method of claim 1, wherein said step of detecting a failure of said fan comprises:
determining a rotating speed gear of the fan, and detecting whether the actual rotating speed value of the fan is greater than the rotating speed upper limit value of the rotating speed gear when the rotating speed gear is not in a neutral gear;
if the actual rotating speed value is larger than the rotating speed upper limit value, determining that the fan has an overspeed fault;
the step of obtaining the control mode of the fan according to the fault type of the fault and controlling the operation of the fan based on the control mode comprises the following steps:
and acquiring a control mode of the fan corresponding to the fan overspeed fault, and controlling the rotating speed gear of the fan to a preset gear according to the control mode of the fan corresponding to the fan overspeed fault.
6. The method for protecting a fan as claimed in claim 5, wherein the step of controlling the rotational speed gear of the fan to a preset gear according to the control mode of the fan corresponding to the overspeed fan fault comprises the following steps:
acquiring a new actual rotating speed value of the fan after the fan operates for a preset time period based on the preset gear, and detecting whether the new actual rotating speed value is greater than a theoretical rotating speed upper limit value corresponding to the preset gear;
and if the new actual rotating speed value is greater than the theoretical rotating speed upper limit value corresponding to the preset gear, controlling the fan to stop operating.
7. The fan protection method according to any one of claims 1 to 6, wherein the step of, if there is a fault in the carrier and the fan, acquiring a control mode of the fan according to a fault type of the fault, and controlling the operation of the fan based on the control mode comprises:
and if the carrier and the fan have faults, determining the fault type of the carrier, and controlling the fan to operate at a preset rated rotating speed according to the fault type.
8. A fan protection device, comprising:
the fault detection module is used for determining a carrier corresponding to the fan and carrying out fault detection on the carrier and the fan;
and the control module is used for acquiring the control mode of the fan according to the fault type of the fault and controlling the fan to operate based on the control mode if the carrier and/or the fan have the fault.
9. A fan protection apparatus, comprising: memory, a processor and a fan protection program stored on the memory and executable on the processor, the fan protection program when executed by the processor implementing the steps of the fan protection method as claimed in any one of claims 1 to 7.
10. A computer storage medium, characterized in that the computer storage medium has a fan protection program stored thereon, which when executed by a processor implements the steps of the fan protection method according to any one of claims 1 to 7.
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| CN202010521522.1A CN111706538A (en) | 2020-06-09 | 2020-06-09 | Fan protection method, device, equipment and computer storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010521522.1A CN111706538A (en) | 2020-06-09 | 2020-06-09 | Fan protection method, device, equipment and computer storage medium |
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Application publication date: 20200925 |