CN114635865B - Fan alarm method, terminal and storage medium - Google Patents
Fan alarm method, terminal and storage medium Download PDFInfo
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- CN114635865B CN114635865B CN202210189004.3A CN202210189004A CN114635865B CN 114635865 B CN114635865 B CN 114635865B CN 202210189004 A CN202210189004 A CN 202210189004A CN 114635865 B CN114635865 B CN 114635865B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000007306 turnover Effects 0.000 claims abstract description 112
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000004590 computer program Methods 0.000 claims description 21
- 230000006870 function Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Abstract
The application provides a fan alarming method, a terminal and a storage medium. The fan is configured to generate a fault signal according to the real-time rotating speed of the fan; the fault signal is configured as a square wave signal having a corresponding square wave period; the fan alarming method comprises the following steps: detecting fan operation electric parameters according to a preset detection period, and determining the level turnover times of the fault signals in the preset detection period; determining a corresponding turnover threshold value based on the fan operation electric parameters, and judging whether the fan has stalling faults, stalling faults or normal operation according to the level turnover times and the corresponding turnover threshold value; generating a first alarm signal when the stalling fault occurs; and when the locked rotor fails, generating a second alarm signal. The application can detect and distinguish the stalling fault or the stalling fault of the fan, and can generate alarm signals in a targeted manner, thereby improving the early warning accuracy.
Description
Technical Field
The present application relates to the field of fan control technologies, and in particular, to a fan alarm method, a terminal, and a storage medium.
Background
When the fan for radiating heat in the original power device is in normal operation, the fault signal output port of the fan continuously outputs high level (or low level), and when the fan is abnormally stopped, the fault signal output port continuously outputs low level (or high level). Correspondingly, the original fault detection method comprises the following steps: if the low level (or the high level) is detected, the fault is judged to occur and the alarm is protected, otherwise, the normal operation is judged to be not operated. The actual rotating speed of the fan is lower than the rotating speed under normal operation due to the conditions of partial blocking and the like, and the module is overheated due to insufficient rotating speed. However, the conventional control scheme can only detect the stalling abnormality, and cannot detect the abnormality caused by the insufficient actual rotation speed.
Disclosure of Invention
The embodiment of the application provides a fan alarming method, a terminal and a storage medium, which are used for solving the problem that the existing control scheme can only detect the stalling abnormality and cannot detect the abnormality caused by the insufficient actual rotating speed.
In a first aspect, an embodiment of the present application provides a fan alarm method, where the fan is configured to generate a fault signal according to a real-time rotation speed of the fan; the fault signal is configured as a square wave signal having a corresponding square wave period; the fan alarming method comprises the following steps:
detecting fan operation electric parameters according to a preset detection period, and determining the level turnover times of the fault signals in the preset detection period;
determining a corresponding turnover threshold value based on the fan operation electric parameters, and judging whether the fan has stalling faults, stalling faults or normal operation according to the level turnover times and the corresponding turnover threshold value;
generating a first alarm signal when the stalling fault occurs; and when the locked rotor fails, generating a second alarm signal.
Optionally, the fan operation electric parameter is fan voltage, set rotation speed or set rotation speed mode.
In one possible implementation, when the fan operation electrical parameter is a fan voltage, the determining a corresponding rollover threshold based on the fan operation electrical parameter includes:
determining the turnover frequency range of the corresponding output signal based on the fan operation electric parameter;
and determining the turnover threshold according to the turnover frequency range.
Optionally, the turnover threshold is a lower limit value, an upper limit value or an average value of the lower limit value and the upper limit value of the turnover frequency range.
In one possible implementation manner, after the generating the second alarm signal, the method further includes:
determining a voltage compensation value according to the turnover times and the turnover times range;
and adjusting the voltage of the fan according to the voltage compensation value.
In one possible implementation manner, the determining a voltage compensation value according to the number of times of flipping and the range of times of flipping includes:
and determining the voltage compensation value according to the average value, the upper limit value or the lower limit value between the turnover number and the upper limit value and the lower limit value of the turnover number range.
In one possible implementation manner, after the adjusting the voltage of the fan according to the voltage compensation value, the method further includes:
executing the operation of detecting the output signal and the following operation according to a preset detection period after a set time;
if the fan is judged to normally operate, the second alarm signal is cleared; otherwise, a third alarm signal is generated.
In one possible implementation manner, the determining the level flip times of the fault signal in the preset detection period includes:
detecting the level value of the fault signal according to a set frequency in a preset detection period;
when the detected level values of the two adjacent times are different, the turnover number is increased by one.
In one possible implementation manner, the judging, according to the number of times of turning and a turning threshold, that the fan has a stall fault, a locked-rotor fault or normal operation includes:
calculating the difference between the turnover times and the turnover threshold value;
when the difference value is greater than or equal to a first set value, determining that the fan stops rotating; when the difference value is smaller than the first set value and larger than or equal to a second set value, determining that the fan is locked; otherwise, determining that the fan normally operates.
In one possible implementation manner, the judging, according to the number of times of turning and a turning threshold, that the fan has a stall fault, a locked-rotor fault or normal operation includes:
calculating the ratio between the turnover times and the turnover threshold value;
determining that the fan is stopped when the ratio is smaller than a first ratio; when the ratio is greater than or equal to the first ratio and less than the second ratio, determining that the fan is locked; otherwise, determining that the fan normally operates.
In a second aspect, an embodiment of the present application provides a fan alarm device, where a fault signal output port of the fan outputs an output signal generated according to a real-time rotation speed; the output signal is a square wave signal; the device comprises:
the detection module is used for detecting the running electric parameters of the fan according to a preset detection period and determining the level turnover times of the fault signal in the preset detection period;
the judging module is used for determining a corresponding turnover threshold value based on the fan operation electric parameter and judging whether the fan has stall faults, stall faults or normal operation according to the level turnover times and the corresponding turnover threshold value;
and the control module is used for generating a first alarm signal when the stalling fault occurs and generating a second alarm signal when the stalling fault occurs.
In a third aspect, an embodiment of the present application provides a terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the fan alarm method described above in the first aspect or any one of the possible implementations of the first aspect when the computer program is executed.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the fan alarm method as described above in the first aspect or any one of the possible implementations of the first aspect.
The embodiment of the application provides a fan alarming method, a terminal and a storage medium, which are used for judging whether a fan generates a locked-rotor fault or a stalled fault based on the turnover number of an output signal by generating a fault signal in a square wave form according to a real-time rotating speed, detecting a fan operation electric parameter according to a preset detection period and determining the level turnover number of the fault signal in the preset detection period. And determining a corresponding turnover threshold value based on the fan operation electric parameters, judging that the fan has stall faults, stall faults or normal operation according to the turnover times and the turnover threshold value, generating a first alarm signal when the stall faults, and generating a second alarm signal when the stall faults. The method comprises the steps of judging the difference between the rotating speed of the fan and the rotating speed of the fan in a normal running state based on an output signal and a turnover threshold value generated according to the real-time rotating speed, detecting and distinguishing the occurrence of stalling faults or stalling faults of the fan, generating alarm signals in a targeted mode, and improving early warning accuracy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an implementation of a fan alarm method provided by an embodiment of the present application;
FIG. 2 is a flowchart of a fan alarm method according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a fan alarm device according to an embodiment of the present application;
fig. 4 is a schematic diagram of a terminal according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to ensure that the fan can judge that the fan has a shutdown fault or normal operation based on the output signal of the fault signal output port, and can detect the shutdown fault, the generation mode of the output signal is improved, a single-level signal is output under the original normal operation condition and is converted into an output square wave signal, the period of the square wave signal is regulated based on the real-time rotating speed of the fan, and a high-level signal or a low-level signal is continuously output when the fan is judged to have a fault.
Specifically, the higher the real-time rotating speed of the fan is, the smaller the period of the square wave signal is, and the higher the corresponding turnover frequency is. Similarly, the lower the real-time rotating speed of the fan is, the larger the period of the square wave signal is, and the lower the corresponding turnover frequency is. Further, when the fan is stopped, the output signal of the fault signal output port is a continuous high level or low level signal according to whether the output signal is high level or low level when the fault occurs, and the level signal can be understood to be a square wave signal with infinite square wave period at the moment.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following description will be made by way of specific embodiments with reference to the accompanying drawings.
Fig. 1 is a flowchart of an implementation of a fan alarm method according to an embodiment of the present application, as shown in fig. 1, where the method includes the following steps:
s101, detecting the fan operation electric parameters according to a preset detection period, and determining the level turnover times of fault signals in the preset detection period.
The prediction detection period is greater than the period of the output signal, and the preset detection period is not too long, and is optionally 10S-30S. Optionally, the preset detection period is 10S, 15S, 20S, 25S or 30S. And detecting the output signal based on a preset detection period, so that whether the fan has a locked rotor fault or not can be judged based on the turnover times of the output signal.
S102, determining a corresponding turnover threshold value based on the fan operation electric parameters, and judging whether the fan has stalling faults, stalling faults or normal operation according to the level turnover times and the corresponding turnover threshold value.
S103, when the stalling fault occurs, a first alarm signal is generated; and when the locked rotor fails, generating a second alarm signal.
The fan independent control module detects the output signal of the fault signal output port and completes the judgment and alarm signal generation operation in the step S102. Optionally, the detecting, judging and alarming signal generating operations are completed by a control module of the power device or a peripheral control module.
In the embodiment of the application, the fault signal in the form of square wave is generated according to the real-time rotating speed, the running electric parameter of the fan is detected according to the preset detection period, and the level turnover times of the fault signal in the preset detection period are determined, so that whether the fan has a locked-rotor fault or a stalled-rotor fault is judged based on the turnover times of the output signal. And determining a corresponding turnover threshold value based on the fan operation electric parameters, judging that the fan has stall faults, stall faults or normal operation according to the turnover times and the turnover threshold value, generating a first alarm signal when the stall faults, and generating a second alarm signal when the stall faults. The method comprises the steps of judging the difference between the rotating speed of the fan and the rotating speed of the fan in a normal running state based on an output signal and a turnover threshold value generated according to the real-time rotating speed, detecting and distinguishing the occurrence of stalling faults or stalling faults of the fan, generating alarm signals in a targeted mode, and improving early warning accuracy.
In different embodiments, the manner of determining the flip threshold in step S102 is different according to the fan operation electrical parameter. Optionally, the fan operation electrical parameter is fan voltage, set rotational speed or set rotational speed mode.
In one possible implementation manner, if the rotation speed mode of the fan is fixed, the turnover threshold value serving as the basis for judging the running state of the fan is fixed. And determining a turnover threshold according to the rotating speed of the fan in the normal running state.
In one possible implementation, the rotational speed mode of the fan is adjustable, for example: including mute, low speed, and high speed. At this time, the corresponding turnover threshold value is determined according to the rotation speed mode, so that the accuracy of judging the state of the fan is improved.
In one possible implementation, considering that the main factor affecting the fan speed is the fan voltage, the corresponding flipping threshold is determined directly from the fan voltage.
Optionally, in step S102, determining a corresponding rollover threshold based on the fan operating electrical parameter includes:
determining the turnover frequency range of the corresponding output signal based on the fan operation electric parameter;
and determining a turnover threshold value according to the turnover frequency range. The turning threshold is a lower limit value, an upper limit value or an average value of the upper limit value and the lower limit value of the turning frequency range.
An embodiment is used for describing that the minimum rated voltage value corresponding to the fan is 5V, and the corresponding turnover frequency ranges from 500 times to 600 times. The flip threshold is 500 times the lower limit of the flip frequency range, or 600 times the upper limit of the flip frequency range, or 550 times the average of the upper limit and the lower limit of the flip frequency range.
The turnover threshold value can be adjusted according to the accuracy requirement or the energy consumption requirement of the fan on fault judgment.
Alternatively, on the basis of the foregoing embodiment, one half or one third of the upper limit value of the range of the number of times of flipping is used as the flipping threshold.
Alternatively, on the basis of the foregoing embodiment, one half or one third of the lower limit value of the range of the number of times of flipping is used as the flipping threshold.
On the basis of the same working condition and judgment, the smaller turnover threshold value can send fan fault information in advance so as to prompt maintenance treatment, and reduce the increase of fan energy consumption due to faults. The larger turnover threshold can ensure that the fan operates at a rotating speed lower than that of the normal operation condition, and further can improve the rotating speed by improving the voltage so as to ensure that the fan operates at the set rotating speed.
In one possible implementation, after generating the second alarm signal, the method further includes:
determining a voltage compensation value according to the turnover times and the turnover times range;
and adjusting the voltage of the fan according to the voltage compensation value.
In one possible implementation, determining the voltage compensation value according to the number of inversions and the range of inversions includes:
and determining a voltage compensation value according to the average value, the upper limit value or the lower limit value between the upper limit value and the lower limit value of the turnover frequency and the turnover frequency range.
In one possible implementation, after adjusting the voltage of the blower according to the voltage compensation value, the method further includes:
after the set time, performing an operation of detecting the output signal according to a preset detection period and thereafter;
if the fan is judged to normally operate, the second alarm signal is cleared; otherwise, a third alarm signal is generated.
After the second alarm signal is generated, in order to reduce reminding times, the problem of small air output caused by fan locked rotation is preferably solved by adjusting the voltage of the fan. And when the fan is not recovered to the normal running state, generating a third alarm signal to prompt a locked rotor fault. In addition, in the voltage compensation process, after the fan voltage is adjusted, the fan voltage is smaller than or equal to the rated voltage value so as to ensure that the fan operates in a safe range.
Fig. 2 is a flowchart of an implementation of a fan alarm method according to an embodiment of the present application, as shown in fig. 2, where the method includes the following steps:
s201, detecting fan operation electric parameters according to a preset detection period, and determining the level turnover times of fault signals in the preset detection period.
S202, determining a corresponding turnover threshold value based on the fan operation electric parameters, and judging the fan state according to the level turnover times and the corresponding turnover threshold value.
Step S203 is performed to generate a first alarm signal when a stall fault occurs, step S204 is performed to generate a second alarm signal when a stall fault is transmitted, and step S205 is performed. And maintaining the current running state unchanged when the fan normally runs.
S205, determining a voltage compensation value according to the turnover number and the turnover number range.
S206, adjusting the voltage of the fan according to the voltage compensation value.
S207, judging the state of the fan after setting time.
The step S207 specifically includes: detecting an output signal according to a preset detection period, and determining the turnover times of the output signal; and judging the state of the fan according to the turnover times and the turnover threshold value.
After judging that the fan is restored to normal operation based on step S207, step S209 is performed, otherwise step S208 is performed,
s208, generating a third alarm signal.
S209, clearing the second alarm signal.
In the embodiment of the application, the fault signal in the form of square wave is generated according to the real-time rotating speed, the running electric parameter of the fan is detected according to the preset detection period, and the level turnover times of the fault signal in the preset detection period are determined, so that whether the fan has a locked-rotor fault or a stalled-rotor fault is judged based on the turnover times of the output signal. And determining a corresponding turnover threshold value based on the fan operation electric parameters, judging that the fan has stall faults, stall faults or normal operation according to the turnover times and the turnover threshold value, generating a first alarm signal when the stall faults, and generating a second alarm signal when the stall faults. Further, when the second alarm signal is generated, voltage compensation is performed on the fan voltage, so that the rotating speed of the fan meets the actual requirement, and if the rotating speed of the fan is not improved, a third alarm signal is generated, so that the fan fault cannot be repaired in time. The method comprises the steps of judging the difference between the rotating speed of the fan and the rotating speed of the fan in a normal running state based on an output signal and a turnover threshold value generated according to the real-time rotating speed, detecting and distinguishing the occurrence of stalling faults or stalling faults of the fan, generating alarm signals in a targeted mode, and improving early warning accuracy.
On the basis of any of the foregoing embodiments, in one possible implementation manner, determining the level flip times of the fault signal in the preset detection period includes:
detecting the level value of the fault signal according to the set frequency in a preset detection period;
when the detected level values of the two adjacent times are different, the turnover number is increased by one.
In an embodiment, the preset detection period is 10s, the level of the output signal is detected every 1ms in the preset detection period, and two adjacent detected level signals are judged, and when the level values detected in two adjacent times are different, the number of times of turning is increased by 1.
On the basis of any embodiment, the method for judging that the fan has stall faults, locked-rotor faults or normal operation according to the turnover times and the turnover threshold is different.
In one possible implementation manner, determining that the fan has a stall failure, a stall failure or normal operation according to the number of times of turning and the turning threshold includes:
calculating the difference between the turnover times and the turnover threshold value;
when the difference value is greater than or equal to a first set value, determining that the fan stops rotating; when the difference value is smaller than the first set value and larger than or equal to the second set value, determining that the fan is blocked; otherwise, determining that the fan is in normal operation.
The difference value is the difference value of the overturn times minus the overturn threshold value. And when the difference value is greater than or equal to the first set value, the turnover times are far less than the turnover threshold value, and the fan is judged to stop rotating. And when the difference value is smaller than the first set value and larger than or equal to the second set value, the turnover times are close to the turnover threshold value, and the fan is determined to be blocked.
In one possible implementation manner, determining that the fan has a stall failure, a stall failure or normal operation according to the number of times of turning and the turning threshold includes:
calculating the ratio between the turnover times and the turnover threshold value;
determining that the fan is stopped when the ratio is smaller than the first ratio; when the ratio is greater than or equal to the first ratio and smaller than the second ratio, determining that the fan is locked; otherwise, determining that the fan is in normal operation.
The difference value is a ratio of the turnover number divided by the turnover threshold value, and the ratio is smaller than or equal to 1. And when the ratio is greater than or equal to the first ratio and smaller than the second ratio, the turnover times are close to the turnover threshold value, and the fan stall is determined.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
The following are device embodiments of the application, for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 3 shows a schematic structural diagram of a fan alarm device according to an embodiment of the present application, and for convenience of explanation, only the portions relevant to the embodiment of the present application are shown, which are described in detail below:
as shown in fig. 3, the fan alarm device includes: a detection module 301, a judgment module 302 and a control module 303.
The detection module 301 is configured to detect an electrical parameter of fan operation according to a preset detection period, and determine a level flip number of the fault signal in the preset detection period.
The judging module 302 is configured to determine a corresponding turning threshold based on the fan operation electrical parameter, and judge whether the fan has a stall failure, or normal operation according to the level turning times and the corresponding turning threshold.
The control module 303 is configured to generate a first alarm signal when a stall occurs, and generate a second alarm signal when a stall occurs.
In the embodiment of the application, the fault signal in the form of square wave is generated according to the real-time rotating speed, the running electric parameter of the fan is detected according to the preset detection period, and the level turnover times of the fault signal in the preset detection period are determined, so that whether the fan has a locked-rotor fault or a stalled-rotor fault is judged based on the turnover times of the output signal. And determining a corresponding turnover threshold value based on the fan operation electric parameters, judging that the fan has stall faults, stall faults or normal operation according to the turnover times and the turnover threshold value, generating a first alarm signal when the stall faults, and generating a second alarm signal when the stall faults. The method comprises the steps of judging the difference between the rotating speed of the fan and the rotating speed of the fan in a normal running state based on an output signal and a turnover threshold value generated according to the real-time rotating speed, detecting and distinguishing the occurrence of stalling faults or stalling faults of the fan, generating alarm signals in a targeted mode, and improving early warning accuracy.
Fig. 4 is a schematic diagram of a terminal according to an embodiment of the present application. As shown in fig. 4, the terminal 4 of this embodiment includes: a processor 40, a memory 41 and a computer program 42 stored in the memory 41 and executable on the processor 40. The steps of the various fan alert method embodiments described above, such as steps S101 through S102 shown in fig. 1, are implemented by the processor 40 when executing the computer program 42. Alternatively, the processor 40, when executing the computer program 42, performs the functions of the modules/units of the apparatus embodiments described above, such as the functions of the modules 301 to 303 shown in fig. 4.
Illustratively, the computer program 42 may be partitioned into one or more modules/units that are stored in the memory 41 and executed by the processor 40 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program 42 in the terminal 4. For example, the computer program 42 may be split into modules 301 to 303 shown in fig. 4.
The terminal 4 may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, etc. The terminal 4 may include, but is not limited to, a processor 40, a memory 41. It will be appreciated by those skilled in the art that fig. 4 is merely an example of the terminal 4 and is not limiting of the terminal 4, and may include more or fewer components than shown, or may combine some components, or different components, e.g., the terminal may further include input and output devices, network access devices, buses, etc.
The processor 40 may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the terminal 4, such as a hard disk or a memory of the terminal 4. The memory 41 may also be an external storage device of the terminal 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal 4. The memory 41 is used for storing the computer program as well as other programs and data required by the terminal. The memory 41 may also be used for temporarily storing data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal and method may be implemented in other manners. For example, the apparatus/terminal embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by instructing the relevant hardware by a computer program, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of each fan alarm method embodiment described above when executed by a processor. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (7)
1. A fan alarm method, characterized in that the fan is configured to generate a fault signal according to the real-time rotation speed of the fan; the fault signal is configured as a square wave signal having a corresponding square wave period; the fan alarming method comprises the following steps:
detecting fan operation electric parameters according to a preset detection period, and determining the level turnover times of the fault signals in the preset detection period;
determining a corresponding turnover threshold value based on the fan operation electric parameters, and judging whether the fan has stalling faults, stalling faults or normal operation according to the level turnover times and the corresponding turnover threshold value;
generating a first alarm signal when the stalling fault occurs; generating a second alarm signal when the locked rotor fails;
the determining a corresponding turnover threshold value based on the fan operation electric parameter comprises the following steps:
determining the turnover frequency range of the corresponding output signal based on the fan operation electric parameter;
determining the turnover threshold according to the turnover frequency range;
after the generating of the second alarm signal, further comprising:
determining a voltage compensation value according to the turnover times and the turnover times range;
adjusting the voltage of the fan according to the voltage compensation value;
executing the operation of detecting the output signal and the following operation according to a preset detection period after a set time;
if the fan is judged to normally operate, the second alarm signal is cleared; otherwise, a third alarm signal is generated.
2. The method of claim 1, wherein said determining a voltage compensation value based on said number of inversions and said range of inversions comprises:
and determining the voltage compensation value according to the average value, the upper limit value or the lower limit value between the turnover number and the upper limit value and the lower limit value of the turnover number range.
3. The method of claim 1, wherein said determining the number of level inversions of the fault signal within the preset detection period comprises:
detecting the level value of the fault signal according to a set frequency in a preset detection period;
when the detected level values of the two adjacent times are different, the turnover number is increased by one.
4. A method according to any one of claims 1 to 3, wherein said determining that the fan has a stall failure, or a normal operation based on the number of times of flipping and a flipping threshold comprises:
calculating the difference between the turnover times and the turnover threshold value;
when the difference value is greater than or equal to a first set value, determining that the fan stops rotating; when the difference value is smaller than the first set value and larger than or equal to a second set value, determining that the fan is locked; otherwise, determining that the fan normally operates.
5. A method according to any one of claims 1 to 3, wherein said determining that the fan has a stall failure, or a normal operation based on the number of times of flipping and a flipping threshold comprises:
calculating the ratio between the turnover times and the turnover threshold value;
determining that the fan is stopped when the ratio is smaller than a first ratio; when the ratio is greater than or equal to the first ratio and less than the second ratio, determining that the fan is locked; otherwise, determining that the fan normally operates.
6. A terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the fan alarm method according to any of the preceding claims 1 to 5 when the computer program is executed.
7. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the fan alarm method according to any of the preceding claims 1 to 5.
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| CN202210189004.3A CN114635865B (en) | 2022-02-28 | 2022-02-28 | Fan alarm method, terminal and storage medium |
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| CN115095544A (en) * | 2022-06-28 | 2022-09-23 | 上能电气股份有限公司 | Fan fault detection method and device, computer equipment and storage medium |
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| CN114635865A (en) | 2022-06-17 |
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