CN111578448A - Air conditioner detection method and system, air conditioner and computer readable storage medium - Google Patents
Air conditioner detection method and system, air conditioner and computer readable storage medium Download PDFInfo
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- CN111578448A CN111578448A CN202010446602.5A CN202010446602A CN111578448A CN 111578448 A CN111578448 A CN 111578448A CN 202010446602 A CN202010446602 A CN 202010446602A CN 111578448 A CN111578448 A CN 111578448A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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Abstract
The invention discloses a detection method and a detection system of an air conditioner, the air conditioner and a computer readable storage medium, wherein the detection method comprises the following steps: detecting a rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner; judging whether a fan stall detection condition is met or not according to the change of the rotating speed parameter of the fan; if so, acquiring a fan rotating speed sequence in preset time, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in preset time; and determining whether the fan stalls or not according to the fan rotating speed sequence. The detection method of the air conditioner can detect the running state of the fan in the air conditioner, thereby automatically detecting the stall problem of the fan under non-extreme conditions, avoiding the situation that the cooling and heating effects of the air conditioner are influenced due to the fact that the fan is seriously deviated from the set rotating speed within the large fluctuation allowed by software, and simultaneously avoiding the comfort problem caused by large and small air volume due to the stall of the fan.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a detection method and a detection system of an air conditioner, the air conditioner and a computer readable storage medium.
Background
The existing air conditioner rarely detects the running state of an alternating current motor in the air conditioner, and the fault can be reported only under the condition that part of the alternating current motor is extremely stalled, so that the fan detection effect of the air conditioner is poor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a detection method of an air conditioner, which aims to solve the problem that the detection effect of a fan is poor because the existing air conditioner can report the fault only under the condition that part of the existing air conditioner is extremely stalled.
The invention also aims to provide a detection system applying the detection method of the air conditioner.
The invention also aims to provide the air conditioner applying the detection system of the air conditioner.
The invention also aims to provide a computer readable storage medium applying the detection method of the air conditioner.
The detection method of the air conditioner according to the embodiment of the invention comprises the following steps: detecting a rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner; judging whether a fan stall detection condition is met or not according to the change of the rotating speed parameter of the fan; if so, acquiring a fan rotating speed sequence in preset time, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time; and determining whether the fan stalls or not according to the fan rotating speed sequence.
According to the detection method of the air conditioner, compared with the existing air conditioner which can report obstacles only under the condition that part of the air conditioner is extremely severely stalled, the method provided by the embodiment of the invention can detect the rotating speed parameter of the fan, judge whether the fan stall detection condition is met or not according to the change of the rotating speed parameter of the fan, acquire the rotating speed sequence of the fan within the preset time, and then determine whether the fan stalls or not according to the rotating speed sequence of the fan, so that the running state of the fan in the air conditioner can be detected, the problem that the fan stalls under the non-extreme condition is automatically detected, the phenomenon that the set rotating speed is seriously deviated in the larger fluctuation allowed by software, the condition that the refrigerating and heating effects of the air conditioner are influenced is avoided, and the problem of comfort caused by.
In some embodiments, the determining whether the fan stall detection condition is met according to the change of the fan rotation speed parameter includes: judging whether the deviation between each of the multiple fan instruction rotating speed voltages detected continuously and repeatedly and the initial fan instruction rotating speed voltage is larger than a preset deviation or not; and if so, determining that the fan stall detection condition is met.
In some embodiments, the deviation between each of the plurality of fan command rotational speed voltages detected in consecutive times and the initial fan command rotational speed voltage is obtained by the following formula:
a＝|1-vspn/vsp|；
wherein a is a deviation between each of a plurality of fan command rotational speed voltages detected a plurality of times in succession and an initial fan command rotational speed voltage, vspn is each of a plurality of fan command rotational speed voltages detected a plurality of times in succession, and vsp is between the initial fan command rotational speed voltages.
In some embodiments, said determining whether the fan is stalled according to the fan speed sequence comprises: acquiring the average value, the maximum value and the minimum value of the rotating speeds of the plurality of fans; and determining whether the fan stalls according to at least one of the average value, the maximum value and the minimum value and the target fan rotating speed.
In some embodiments, the determining whether the fan is stalled according to at least one of the average, maximum, and minimum values and a fan target speed includes: and determining that the fan stalls when at least one of a difference between the average value and the target fan speed is greater than a predetermined difference, a difference between the maximum value and the target fan speed is greater than a predetermined difference, and a difference between the minimum value and the target fan speed is greater than a predetermined difference is satisfied.
The detection system of the air conditioner according to the embodiment of the invention comprises: the detection module is used for detecting the rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner; the stall detection condition determining module is used for judging whether the stall detection condition of the fan is met according to the change of the rotating speed parameter of the fan; the acquisition module is used for acquiring a fan rotating speed sequence in preset time when the fan stall detection condition is met, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time; and the stall confirmation module is used for determining whether the fan stalls according to the fan rotating speed sequence.
According to the detection system of the air conditioner, the rotation speed parameter of the fan is detected through the detection module, then the stall detection condition determination module judges whether the stall detection condition of the fan is met or not according to the change of the rotation speed parameter of the fan, then the acquisition module acquires the fan rotation speed sequence within the preset time when the stall detection condition of the fan is met, and finally the stall confirmation module determines whether the fan stalls or not according to the fan rotation speed sequence, so that the running state of the fan in the air conditioner can be detected, the stall problem of the fan under the non-extreme condition is automatically detected, the situation that the set rotation speed is seriously deviated in the large fluctuation allowed by software, the refrigeration and heating effects of the air conditioner are influenced is avoided, and meanwhile, the comfort problem caused by large and small air volume due to the stall of the fan can be avoided.
In some embodiments, the fan speed parameter includes a fan commanded speed voltage, and the stall detection condition determining module is configured to determine whether a deviation between each of a plurality of fan commanded speed voltages detected consecutively multiple times and an initial fan commanded speed voltage is greater than a preset deviation, and if so, determine that the fan stall detection condition is satisfied.
In some embodiments, the stall determination module is configured to obtain an average value, a maximum value, and a minimum value of the plurality of fan speeds, and determine whether the fan stalls according to at least one of the average value, the maximum value, and the minimum value and a fan target speed.
An air conditioner according to an embodiment of the present invention includes: the detection system of the air conditioner according to any one of the preceding claims.
According to the air conditioner of the embodiment of the invention, the air conditioner detects the rotating speed parameter of the fan through the detection module in the detection system, then, a stall detection condition determining module of the detection system judges whether a stall detection condition of the fan is met according to the change of the rotating speed parameter of the fan, then, an acquisition module of the detection system acquires a fan rotating speed sequence within a preset time when the fan stall detection condition is met, finally, a stall confirmation module of the detection system determines whether the fan stalls according to the fan rotating speed sequence, thereby detecting the running state of the fan in the air conditioner, automatically detecting the stalling problem of the fan under non-extreme conditions, avoiding the serious deviation from the set rotating speed in the larger fluctuation allowed by software, thereby influencing the condition of the cooling and heating effect of the air conditioner and simultaneously avoiding the comfort problem caused by large and small air quantity caused by the stalling of the fan.
A computer-readable storage medium according to an embodiment of the present invention, having a computer program stored thereon, which, when executed by a processor, implements the detection method of an air conditioner according to any one of the foregoing.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram illustrating a method for detecting an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating the detection of an air conditioner in an air supply mode according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a detection system of an air conditioner in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes a detection method of an air conditioner according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 1, a detection method of an air conditioner according to an embodiment of the present invention includes:
step S1: and detecting the rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of the air conditioner.
Step S2: and judging whether the stall detection condition of the fan is met or not according to the change of the rotating speed parameter of the fan.
Specifically, the rotation speed parameter of the fan includes a fan instruction rotation speed voltage vsp, and whether the fan stall detection condition is met or not is judged according to the change of the fan rotation speed parameter, including: judging whether the deviation between each of the multiple fan instruction rotating speed voltages detected continuously and repeatedly and the initial fan instruction rotating speed voltage vsp is larger than a preset deviation or not; if so, determining that the fan stall detection condition is met. It is worth to be noted that the fan command rotating speed voltage vsp is a single-phase asynchronous motor command rotating speed voltage in the fan, that is, an effective voltage of the motor, and the magnetic field can be changed by changing the fan command rotating speed voltage vsp, so that the rotating speed corresponding to the motor is correspondingly changed.
That is to say, the fan stall detection condition is determined by judging a plurality of fan command rotation speed voltages, that is, whether a deviation between each fan command rotation speed voltage and a set initial fan command rotation speed voltage vsp is greater than a preset value is continuously judged for a plurality of times, if the deviation is not greater than the preset deviation, the fan does not satisfy the stall detection condition, stall detection is not needed, and if the deviation is greater than the preset deviation, the fan satisfies the stall detection condition and stall detection is needed to be performed on the fan.
Step S3: and if so, acquiring a fan rotating speed sequence in preset time, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time.
Specifically, the deviation between each of the multiple fan command rotating speed voltages detected continuously and repeatedly and the initial fan command rotating speed voltage vsp is obtained through the following formula:
a＝|1-vspn/vsp|；
where a is a deviation between each of the plurality of fan command rotational speed voltages detected a plurality of times in succession and an initial fan command rotational speed voltage vsp, vspn is each of the plurality of fan command rotational speed voltages detected a plurality of times in succession, and vsp is between the initial fan command rotational speed voltages.
That is, calculating a deviation a between each fan instruction rotating speed voltage and an initial fan instruction rotating speed voltage vsp when a plurality of fan instruction rotating speed voltages are detected continuously for a plurality of times, wherein a is an absolute value of a calculation result of 1-vspn/vsp, calling out a default allowable deviation k of a system, comparing a with k, and when the detected a is greater than or equal to k, indicating that the fan instruction rotating speed voltage at the moment meets a stall condition, and at the moment, accumulating 1 by a counter N; and when the detected a is smaller than k, the blower instruction rotating speed voltage does not meet the stall condition at the moment, the counter N is not accumulated at the moment, and by analogy, the deviation a between the next blower instruction rotating speed voltage and the initial blower instruction rotating speed voltage vsp and the allowable deviation k are continuously judged.
Step S4: and determining whether the fan stalls or not according to the fan rotating speed sequence.
Specifically, determining whether the fan stalls according to the fan speed sequence includes: obtaining an average value Spj, a maximum value Smax and a minimum value Smin of the rotating speeds of the fans; and determining whether the fan is stalled according to at least one of the average value Spj, the maximum value Smax and the minimum value Smin and the target fan speed.
Specifically, determining whether the fan is stalled according to at least one of the average value Spj, the maximum value Smax, and the minimum value Smin, and the target fan speed includes: and determining that the fan stalls when at least one of the difference between the average value Spj and the target fan rotating speed is greater than a preset difference, the difference between the maximum value Smax and the target fan rotating speed is greater than a preset difference, and the difference between the minimum value Smin and the target fan rotating speed is greater than a preset difference is satisfied.
In some embodiments, the set rotating speed of the fan is S, the rotating speed of the fan allowable deviation is 100, the preset difference value is S-100, at this time, whether the average value Spj is smaller than S-100 or whether the maximum value Smax is larger than S-100 or whether the minimum value Smin is smaller than S-100 is judged, and if the average value Spj, the maximum value Smax and the minimum value Smin meet any one of the above conditions, a fault code FJSS is reported; if none of the average value Spj, the maximum value Smax, and the minimum value Smin meet the above conditions, the fan stall detection is exited.
According to the detection method of the air conditioner, compared with the existing air conditioner which can report obstacles only under the condition that part of the air conditioner is extremely severely stalled, the method provided by the embodiment of the invention can detect the rotating speed parameter of the fan, judge whether the fan stall detection condition is met or not according to the change of the rotating speed parameter of the fan, acquire the rotating speed sequence of the fan within the preset time, and then determine whether the fan stalls or not according to the rotating speed sequence of the fan, so that the running state of the fan in the air conditioner can be detected, the problem that the fan stalls under the non-extreme condition is automatically detected, the phenomenon that the set rotating speed is seriously deviated in the larger fluctuation allowed by software, the condition that the refrigerating and heating effects of the air conditioner are influenced is avoided, and the problem of comfort caused by.
In order to make the present invention more clear to those skilled in the art, an embodiment of the detection method of the air conditioner of the present invention is described below with reference to the accompanying drawings, as shown in fig. 2, wherein an air supply mode of the air conditioner is taken as an example.
Step S01: the air conditioner is started.
Step S02: and setting the running gear of the inner fan.
Step S03: after the motor of the fan runs for 20S, detecting the rotating speed parameter of the fan, namely recording the instruction rotating speed S of the single-phase asynchronous motor, and synchronously detecting the instruction rotating speed voltage vsp of the single-phase asynchronous motor in the fan.
Step S04: the vsp value was measured once every 5s, recorded as vsp1, and compared to the vsp value, and recorded as a, a ═ 1-vsp2/vsp |.
Step S05: calling out a default allowable deviation k of the system; compare the a and k sizes.
Step S06: if a is less than k, quitting the fan stall detection; if a > -k, the counter N increments by 1.
Step S07: returning to step S04, the secondary vsp value is detected, recorded as vsp2, and compared to the vsp value, denoted as b, b ═ 1-vsp2/vsp |.
Step S08: if b is less than k, exiting the fan stall detection; if b > is k, the counter N continues to count up 1 times.
Step S09: returning to step S04, a third vsp value is detected, recorded as vsp3, and compared to the vsp value, denoted as c, c ═ 1-vsp2/vsp |.
Step S10: if c is less than k, exiting the fan stall detection; if c > is k, the counter N continues to count up 1.
Step S11: and when N > is 3, automatically entering an engineering mode, displaying the actual running rotating speed Si of the inner fan by a display panel, and continuously running the motor for 15 seconds.
Step S12: the mean Spj, maximum Smax and minimum Smin of the motor are recorded over 15 seconds.
Step S13: comparing the average value Spj, the maximum value Smax and the minimum value Smin with the set rotating speed S of the fan, and if Spj is less than S-100 or Smax is greater than S +100 and Smin is less than S-100, reporting a fault code FJSS; otherwise, exiting the fan stall detection program.
In summary, the detection method of the air conditioner according to the embodiment of the present invention brings the operation state of the ac motor into the daily monitoring range, and the conventional blower stall generally only considers one maximum limit and minimum limit wind speed, but cannot avoid the situation that the motor operation fluctuation is large in this range, for example, the difference from the set wind speed is about 100 to 200 (which is conventionally not guaranteed), so as to bring the comfort problem of cooling and heating.
As shown in fig. 3, a detection system of an air conditioner according to an embodiment of the present invention includes: the stall detection device comprises a detection module, a stall detection condition determination module, an acquisition module and a stall confirmation module.
The detection module is used for detecting the rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner; the stall detection condition determining module is used for judging whether the stall detection condition of the fan is met according to the change of the rotating speed parameter of the fan; the acquisition module is used for acquiring a fan rotating speed sequence in preset time when the fan stall detection condition is met, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time; the stall confirmation module is used for determining whether the fan stalls according to the fan rotating speed sequence.
According to the detection system of the air conditioner, the rotation speed parameter of the fan is detected through the detection module, then the stall detection condition determination module judges whether the stall detection condition of the fan is met or not according to the change of the rotation speed parameter of the fan, then the acquisition module acquires the fan rotation speed sequence within the preset time when the stall detection condition of the fan is met, and finally the stall confirmation module determines whether the fan stalls or not according to the fan rotation speed sequence, so that the running state of the fan in the air conditioner can be detected, the stall problem of the fan under the non-extreme condition is automatically detected, the situation that the set rotation speed is seriously deviated in the large fluctuation allowed by software, the refrigeration and heating effects of the air conditioner are influenced is avoided, and meanwhile, the comfort problem caused by large and small air volume due to the stall of the fan can be avoided.
In some embodiments, the fan rotation speed parameter includes a fan command rotation speed voltage vsp, and the stall detection condition determining module is configured to determine whether a deviation between each of a plurality of fan command rotation speed voltages detected consecutively multiple times and an initial fan command rotation speed voltage vsp is greater than a preset deviation, and if so, determine that the fan stall detection condition is satisfied. That is to say, the stall detection condition determining module determines a plurality of fan command rotation speed voltages detected continuously and repeatedly, that is, whether the deviation between each fan command rotation speed voltage and the initial fan command rotation speed voltage is greater than a preset deviation is compared, if the deviation is not greater than the preset deviation, the stall detection condition determining module determines that the fan does not meet the stall detection condition, stall detection is not needed, and if the deviation is greater than the preset deviation, the stall detection condition determining module determines that the fan meets the stall detection condition, and stall detection is needed.
In some embodiments, the stall confirmation module is configured to obtain an average value Spj, a maximum value Smax, and a minimum value Smin of the plurality of fan speeds, and determine whether the fan stalls based on at least one of the average value Spj, the maximum value Smax, and the minimum value Smin and the target fan speed. The stall confirmation module determines that the fan stalls, for example, when at least one of a difference between the average value Spj and the fan target rotational speed is greater than a predetermined difference, a difference between the maximum value Smax and the fan target rotational speed is greater than a predetermined difference, and a difference between the minimum value Smin and the fan target rotational speed is greater than a predetermined difference is satisfied.
Specifically, the set rotating speed of the fan is S, the rotating speed of the fan allowable deviation is 100, the preset difference value is S-100, and the stall confirmation module judges whether the average value Spj is smaller than S-100, or judges whether the maximum value Smax is larger than S-100, or judges the minimum value Smi at the momentnWhether the average value Spj, the maximum value Smax and the minimum value Smin meet any one of the conditions is determined, and the stall confirmation module confirms a fan stall report fault code FJSS; and if the average value Spj, the maximum value Smax and the minimum value Smin do not meet the conditions, the stall confirmation module confirms that the fan does not stall, and quits the fan stall detection.
An air conditioner according to an embodiment of the present invention includes: the detection system of an air conditioner according to any one of the preceding.
According to the air conditioner of the embodiment of the invention, the air conditioner detects the rotating speed parameter of the fan through the detection module in the detection system, then, a stall detection condition determining module of the detection system judges whether a stall detection condition of the fan is met according to the change of the rotating speed parameter of the fan, then, an acquisition module of the detection system acquires a fan rotating speed sequence within a preset time when the fan stall detection condition is met, finally, a stall confirmation module of the detection system determines whether the fan stalls according to the fan rotating speed sequence, thereby detecting the running state of the fan in the air conditioner, automatically detecting the stalling problem of the fan under non-extreme conditions, avoiding the serious deviation from the set rotating speed in the larger fluctuation allowed by software, thereby influencing the condition of the cooling and heating effect of the air conditioner and simultaneously avoiding the comfort problem caused by large and small air quantity caused by the stalling of the fan.
A computer-readable storage medium according to an embodiment of the present invention, having a computer program stored thereon, which, when executed by a processor, implements a detection method of an air conditioner according to any one of the foregoing.
Yet another embodiment of the present application discloses a computer-readable storage medium, which stores thereon a computer program, which, when executed by a processor, implements all the steps of the above-mentioned method for detecting a fan operating state of an air conditioner, for example, when the processor executes the computer program, the processor implements the following steps: detecting a rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner; judging whether a fan stall detection condition is met or not according to the change of the rotating speed parameter of the fan; if so, acquiring a fan rotating speed sequence in preset time, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time; and determining whether the fan stalls or not according to the fan rotating speed sequence.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The detection method and the detection system of the air conditioner according to the embodiment of the present invention, the air conditioner, other configurations of the computer-readable storage medium, etc., and operations thereof are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A detection method of an air conditioner is characterized by comprising the following steps:
detecting a rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner;
judging whether a fan stall detection condition is met or not according to the change of the rotating speed parameter of the fan;
if so, acquiring a fan rotating speed sequence in preset time, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time;
and determining whether the fan stalls or not according to the fan rotating speed sequence.
2. The detecting method of an air conditioner according to claim 1, wherein the rotational speed parameter of the fan includes a fan command rotational speed voltage,
whether the fan stall detection condition is met or not is judged according to the change of the fan rotating speed parameters, and the method comprises the following steps:
judging whether the deviation between each of the multiple fan instruction rotating speed voltages detected continuously and repeatedly and the initial fan instruction rotating speed voltage is larger than a preset deviation or not;
and if so, determining that the fan stall detection condition is met.
3. The detecting method of an air conditioner according to claim 2, wherein the deviation between each of the plurality of fan command rotational speed voltages detected in succession plural times and the initial fan command rotational speed voltage is obtained by the following formula:
a＝|1-vspn/vsp|；
wherein a is a deviation between each of a plurality of fan command rotational speed voltages detected a plurality of times in succession and an initial fan command rotational speed voltage, vspn is each of a plurality of fan command rotational speed voltages detected a plurality of times in succession, and vsp is between the initial fan command rotational speed voltages.
4. The method for detecting the air conditioner according to any one of claims 1 to 3, wherein the determining whether the fan is stalled according to the fan speed sequence includes:
acquiring the average value, the maximum value and the minimum value of the rotating speeds of the plurality of fans;
and determining whether the fan stalls according to at least one of the average value, the maximum value and the minimum value and the target fan rotating speed.
5. The method for detecting an air conditioner according to claim 4, wherein said determining whether the fan is stalled based on at least one of the average value, the maximum value, and the minimum value and a fan target rotation speed includes:
and determining that the fan stalls when at least one of a difference between the average value and the target fan speed is greater than a predetermined difference, a difference between the maximum value and the target fan speed is greater than a predetermined difference, and a difference between the minimum value and the target fan speed is greater than a predetermined difference is satisfied.
6. A detection system for an air conditioner, comprising:
the detection module is used for detecting the rotating speed parameter of a fan, wherein the fan is a fan of an indoor unit of an air conditioner;
the stall detection condition determining module is used for judging whether the stall detection condition of the fan is met according to the change of the rotating speed parameter of the fan;
the acquisition module is used for acquiring a fan rotating speed sequence in preset time when the fan stall detection condition is met, wherein the fan rotating speed sequence comprises a plurality of fan rotating speeds detected in the preset time;
and the stall confirmation module is used for determining whether the fan stalls according to the fan rotating speed sequence.
7. The detection system of the air conditioner according to claim 6, wherein the fan rotation speed parameter includes a fan command rotation speed voltage, and the stall detection condition determination module is configured to determine whether a deviation between each of a plurality of fan command rotation speed voltages detected consecutively a plurality of times and an initial fan command rotation speed voltage is greater than a preset deviation, and if so, determine that the fan stall detection condition is satisfied.
8. The system of claim 6 or 7, wherein the stall determination module is configured to obtain an average value, a maximum value, and a minimum value of the fan speeds, and determine whether the fan stalls according to at least one of the average value, the maximum value, and the minimum value and a fan target speed.
9. An air conditioner, comprising: the detection system of the air conditioner according to any one of claims 6 to 8.
10. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the detection method of the air conditioner according to any one of claims 1 to 5.
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