CN112665110B - Air conditioner control method and device and computer readable storage medium - Google Patents
Air conditioner control method and device and computer readable storage medium Download PDFInfo
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- CN112665110B CN112665110B CN202011531366.3A CN202011531366A CN112665110B CN 112665110 B CN112665110 B CN 112665110B CN 202011531366 A CN202011531366 A CN 202011531366A CN 112665110 B CN112665110 B CN 112665110B
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Abstract
The present application relates to an air conditioner control method, apparatus, and computer-readable storage medium, the method including: detecting a plurality of detection pressure values at detection moments by using a pressure sensor arranged in an air duct in the air conditioner; determining a pressure change curve of the pressure in the air duct according to the detected pressure values at the plurality of detection moments; calculating the change rate of blockage in the air duct according to the pressure change curve; and when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner. The method can be more accurate when determining the air conditioner blockage fault. And the problem of false alarm caused by sudden increase or decrease of a certain pressure of an air duct in the air conditioner can be avoided.
Description
Technical Field
The present application relates to the field of household appliances, and in particular, to an air conditioner control method, device, and computer-readable storage medium.
Background
After the indoor unit of the air conditioner is installed and used for a period of time, a large amount of dust is accumulated at the positions of a filter screen, a bottom shell air duct, a cross-flow fan blade, an evaporator and the like, and the heat exchange performance of the air conditioner and the health of a user are affected.
Therefore need wash filth stifled air conditioner filter screen, the drain pan wind channel, the through-flow fan blade, the evaporimeter, but "filth stifled" should in time wash to what degree, the user does not know, partial air conditioner adopts external filter screen subassembly of dismantling on the existing market, can conveniently pull down the filter screen and clearly see the filth stifled condition of filter screen, but the inside drain pan wind channel of air conditioner, the through-flow fan blade, the evaporimeter is comparatively hidden in the air conditioner, the user is difficult to discover these local filth stifled, at present, each air conditioner producer reminds the function through configuration filth stifled, solve this problem.
In the prior art, a mode of detecting whether an air conditioner is dirty or not is mainly used for judging whether a filter screen is dirty or not by technologies of detecting motor power, phase current and the like, but the requirement on a motor is high under the condition, the motor is generally required to have a function of feeding back motor voltage and phase current, and corresponding voltage and phase current signal processing needs to be added on a controller of the air conditioner, so that the requirement on the precision of the motor is high, the overall cost of the air conditioner is high, in addition, along with the long-time running of the motor, once the high-precision motor fails or the precision is reduced, the conditions of error feedback signals and the like can be caused, and the problems of misinformation, non-declaration and the like can still occur.
Disclosure of Invention
In order to solve the problem of detecting the dirty blockage of the air conditioner by adopting a high-precision motor, the application provides an air conditioner control method, air conditioner control equipment and a computer readable storage medium.
In a first aspect, the present application provides an air conditioner control method, including:
detecting a plurality of detection pressure values at detection moments by using a pressure sensor arranged in an air duct in the air conditioner;
determining a pressure change curve of the pressure in the air duct according to the detected pressure values at the plurality of detection moments;
calculating the change rate of blockage in the air duct according to the pressure change curve;
and when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner.
Optionally, the detecting pressure values at a plurality of detection moments by using a pressure sensor arranged in an air duct of the air conditioner includes:
controlling a pressure sensor arranged in an air duct of the air conditioner to obtain at least two historical detection pressure values according to a preset time interval;
calculating a next acquisition interval;
and controlling a pressure sensor arranged in an air duct of the air conditioner to perform next pressure detection according to a next acquisition interval to obtain a next detection pressure value.
Optionally, the determining the next acquisition interval comprises:
judging whether the two adjacent historical detection pressure values change or not according to the sequence of the detection time; if two adjacent historical detection pressure values change, determining a first time reduction amount according to a preset interval reduction rule, and subtracting the first time reduction amount from the preset time interval to obtain the next acquisition interval;
alternatively, the first and second electrodes may be,
judging whether the change rates of the two adjacent historical detection pressure values meet preset conditions or not according to the sequence of the detection moments, if so, determining a second time reduction amount according to a preset interval reduction rule, and subtracting the second time reduction amount from the preset time interval to obtain the next acquisition interval;
or determining a third time reduction amount according to a preset interval decreasing rule, and subtracting the third time reduction amount from the preset time interval to obtain the next acquisition interval; the detection times in the preset interval decreasing rule are in direct proportion to the time reduction.
Optionally, the determining a pressure variation curve of the pressure in the air duct according to the detected pressure values at the multiple detection moments includes:
marking a pressure value point corresponding to the pressure value at each detection moment in a first coordinate system of time and pressure values;
and smoothly connecting all the pressure value points to obtain the pressure change curve of the air duct pressure.
Optionally, the calculating a rate of change of the blockage in the air duct according to the pressure change curve includes:
calculating a first slope value of a connecting line between pressure value points at two adjacent detection moments in the pressure change curve;
marking a slope value point corresponding to the pressure slope value of each detection moment and the previous detection moment in a second coordinate system of time and slope value;
smoothly connecting all slope value points to obtain a slope value change curve of the air duct pressure;
calculating a second slope of a connecting line between slope value points of two adjacent detection moments in the slope value change curve;
and taking the change rate of the second slope as the occlusion change rate.
Optionally, the pressure sensor is located in an air duct corresponding to an air inlet in the air conditioner, or the pressure sensor is located in an air duct corresponding to an air outlet in the air conditioner.
Optionally, the method further comprises:
acquiring the detection rotating speed of a constant-power motor of the air conditioner;
judging whether the reduction of the detected rotating speed and a preset rotating speed meets a preset reduction;
and if the reduction of the detection rotating speed and the preset rotating speed meets the preset reduction, executing the step of detecting the detection pressure values at a plurality of detection moments by using a pressure sensor arranged in an air duct in the air conditioner.
Optionally, the method further comprises:
and if the blockage fault occurs in the air conditioner, generating a blockage prompt and prompting on a panel of the air conditioner.
In a second aspect, an air conditioner control device is provided, which comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
and a processor configured to implement the steps of the air conditioner control method according to any one of the embodiments of the first aspect when executing the program stored in the memory.
In a third aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the air conditioner control method according to any one of the embodiments of the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the method provided by the embodiment of the application, firstly, the pressure values at a plurality of detection moments are detected through the pressure generator in the air duct, and then the pressure change curve of the pressure in the air duct is determined according to the pressure values at the plurality of detection moments; calculating the change rate of blockage in the air duct according to the pressure change curve; and when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner. Therefore, the pressure value is not used as the judgment basis of the blockage, the change situation of the pressure value is processed twice, the first method is to generate a pressure change curve and then convert the pressure change curve into the change rate of the blockage in the air duct, and the blockage fault of the air conditioner can be determined more accurately. And the problem of false alarm caused by sudden increase or decrease of a certain pressure of an air duct in the air conditioner can be avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic installation diagram of a pressure sensor provided in an embodiment of the present application;
FIG. 3 is a schematic diagram provided in accordance with an embodiment of the present application;
FIG. 4 is another schematic diagram provided in accordance with an embodiment of the present application;
FIG. 5 is yet another schematic diagram provided in accordance with an embodiment of the present application;
FIG. 6 is yet another schematic diagram provided in accordance with an embodiment of the present application;
fig. 7 is a schematic diagram of an air conditioner control device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present disclosure.
The method shown in fig. 1 is applied to an air conditioner, a pressure sensor is arranged in an air duct of an indoor unit of the air conditioner, and in one embodiment of the present application, the pressure sensor may be located in the air duct corresponding to an air inlet of the air duct of the indoor unit of the air conditioner; in another embodiment of the present application, the pressure sensor may also be located in an air duct corresponding to an air outlet of an air duct in the air conditioner.
For an indoor unit of an air conditioner, because a filter screen, a bottom shell air duct, a through-flow fan blade and an evaporator are arranged in an air duct of the indoor unit, the air duct is blocked after dust is accumulated at the positions, and when the air duct is blocked, the pressure in the air duct of the part is higher than the pressure when the air duct is not blocked due to downstream blockage in the air duct corresponding to an air inlet of the air duct of the indoor unit; and for the air duct corresponding to the air outlet of the air duct of the air conditioner indoor unit, the pressure in the air duct at the part is smaller than the pressure when the air duct is not blocked due to upstream blockage.
As shown in fig. 1, the method may include the steps of:
and S101, detecting a plurality of detection pressure values at detection moments by using a pressure sensor arranged in an air duct of the air conditioner.
In the embodiment of the present application, the pressure sensor may sample at intervals, for example: and sampling for multiple times according to the same or different time intervals, so that the detection pressure values at multiple detection moments can be obtained.
And S102, determining a pressure change curve of the pressure in the air duct according to the detected pressure values at the plurality of detection moments.
After a plurality of detected pressure values are obtained through detection, a pressure change curve of the pressure in the air duct along with different detection moments can be drawn in a coordinate system according to the relation between the detected pressure values and the detection moments.
S103, calculating the change rate of blockage in the air duct according to the pressure change curve;
in the embodiment of the present application, the pressure value is proportional to the blockage, for example: for the air duct corresponding to the air outlet of the air duct of the indoor unit of the air conditioner, the increase condition of the pressure value is in direct proportion to the blockage, and for the air duct corresponding to the air inlet of the air duct of the indoor unit, the decrease condition of the pressure value is in inverse proportion to the blockage. Further, the step may adopt a manner that a slope value of two adjacent pressure value points in the pressure change curve is taken as a slope value point, and then a slope of the slope value point is calculated again as a blockage change rate.
And S104, when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner.
In the embodiment of the present application, the preset threshold may be set according to actual detection requirements. When the change rate of the blockage exceeds a preset threshold value, the blockage of the air conditioner is gradually performed and accumulated to a certain degree, so that the blockage fault is determined to occur. The jam fault is a fault that the air conditioner cannot work effectively and needs to be cleaned.
According to the method provided by the embodiment of the application, firstly, the pressure values at a plurality of detection moments are detected through the pressure generator in the air duct, and then the pressure change curve of the pressure in the air duct is determined according to the pressure values at the plurality of detection moments; calculating the change rate of blockage in the air duct according to the pressure change curve; and when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner. Therefore, the pressure value is not used as the judgment basis of the blockage, the change situation of the pressure value is processed twice, the first method is to generate a pressure change curve and then convert the pressure change curve into the change rate of the blockage in the air duct, and the blockage fault of the air conditioner can be determined more accurately. And the problem of false alarm caused by sudden increase or decrease of a certain pressure of an air duct in the air conditioner can be avoided.
In practical application, the air conditioner has a plurality of wind speed gears, and in practical application, a set of jam determination rules can be designed separately for each wind speed gear by referring to the method shown in fig. 1. And no matter what wind speed gear is, the blockage condition can be judged according to the wind speed gear.
In an embodiment of the present application, a pressure sensor may be disposed in an air duct corresponding to an air outlet of an air duct of an air conditioner internal unit.
As shown in fig. 2, 100 is an air conditioner, 101 is a cross-flow maple leaf, 102 is an air outlet of an air duct, and 103 is a pressure sensor installed at a tongue of the air conditioner. In the embodiment shown in fig. 2, the method may comprise the steps of:
stp1 is a pressure value detected at a plurality of detection timings by a pressure sensor provided in an air duct of an air conditioner.
Referring to fig. 3, in the embodiment of the present application, t1-t8 are equally spaced, that is, t1-t8 perform multiple sampling according to the same time interval, so that detected pressure values at multiple detection moments with equal time intervals can be obtained. The fixed time interval may be a natural month, and in other embodiments, the collection may be performed on a fixed number of days or other set intervals.
Stp2 marks pressure value points corresponding to the pressure values at each detection time in a first coordinate system of time and pressure values.
Referring to fig. 3, the pressure value points are x1, x2, … … x8, and only 8 points are illustrated as an example. The abscissa that the pressure value point corresponds is for detecting the moment, and the ordinate that the pressure value point corresponds is for detecting the pressure value, for example: the detected pressure values of x1 are p1, … …, and the detected pressure value of x8 is p 8.
Stp3, smoothly connecting all pressure value points to obtain the pressure change curve of the air duct pressure.
See the pressure profile shown in fig. 3. It can be seen from the figure that, for the air duct corresponding to the air outlet of the air duct in the air conditioner, the pressure in the air duct at the part is smaller than the pressure when the blockage does not occur due to the upstream blockage.
Further in fig. 3, the pressure value gradually decreases as time increases. And to piling up the inside dust of air conditioner, along with the increase of time, the speed that the dust adsorbs can be faster and faster, take the filter screen as an example, at brand-new filter screen or the filter screen after the cleanness, because there is not the dust, it is unblocked, and there is the dust on the filter screen after, make the aperture of filter screen reduce, and then the speed of catching dust or floater accelerates, so, in figure 3, along with the increase of live time, the pressure value that pressure sensor gathered is under the condition of the same interval of gathering, the volume of reducing can increase.
Stp4, a first slope value of a connecting line between pressure value points of two adjacent detection moments in a pressure change curve is calculated.
Referring to fig. 3 as an example, the pressure value points are x1, x2, … … x8, and only 8 points are illustrated as an example.
In fig. 3, the detection time corresponding to the x1 pressure value is t1, the corresponding detected pressure value is p1, and so on, the detection time corresponding to the x8 pressure value is t8, and the corresponding detected pressure value is p 8.
The slope between the pressure value points refers to the slope of a straight line where any two pressure value points are located, and in fig. 3, taking the straight line from the pressure value point x6 to the pressure value point x7 as an example, the slope value is k 7; taking the straight line from the pressure value point x7 to the pressure value point x8 as an example, the slope value is K8, it can be seen that the slope values K7 and K8 are both negative values, and the absolute value of the slope value K7 is less than the absolute value of the slope value K8.
Stp 5: in a second coordinate system of time and slope values, the slope value points corresponding to the pressure slope values at each detection instant and the previous detection instant are marked.
In a specific application, for convenience of graphic reading, when the pressure slope value is a negative value, the absolute value can be taken first, and then the marking is performed in the second coordinate system. Referring to fig. 4, after the slope values are taken as absolute values, from the slope value points k1 to k8, it can be seen that the absolute values of the slope values k1 to k8 are gradually increased from being close to 0, and the absolute value of the slope value of k8 is greater than 1.
Stp 6: and smoothly connecting all the slope value points to obtain a slope value change curve of the air duct pressure.
Referring to fig. 4, when k1 to k8 are connected by a smooth curve, the slope value variation curve in fig. 4 can be obtained.
Stp 7: and calculating a second slope of a connecting line between slope value points of two adjacent detection moments in the slope value change curve.
Referring to fig. 4, taking three slope value points k6, k7 and k8 as an example, the second slope refers to the slope of a straight line containing any two slope value points, where the slope of the straight line containing k6 and k7 is m7, and the slope of the straight line containing k7 and k8 is m 8.
Stp 8: and taking the change rate of the second slope as the occlusion change rate.
As can be seen from fig. 4, in the application embodiment, the detected pressure value is used as the data of the first dimension to obtain the pressure slope value, which can represent the change situation of the pressure value, but the change of the pressure value is not obvious at this time, and once a certain pressure value has a deviation, the situation of misjudgment is easy to occur. Therefore, the pressure slope value is used as a coordinate point, and then the second slope value is calculated, so that the change situation of the pressure value can be seen more intuitively.
Stp9, when the jam change rate exceeds a preset threshold, determining that a jam fault occurs in the air conditioner.
In the embodiment of the present application, the preset threshold may be set according to actual detection requirements. Taking fig. 4 as an example, if the preset threshold is 1, the second slope m8 corresponding to the time t8 obviously exceeds the preset threshold, and then at the time t8, it may be determined that a jam fault occurs in the air conditioner.
In the embodiments shown in fig. 3 and 4, the pressure sensor may be disposed in an air duct corresponding to an air outlet of an air duct of an air conditioner internal unit. However, if the pressure sensor can be located in the air duct corresponding to the air inlet of the air duct of the indoor unit of the air conditioner, the situation is the same, and only the change trend of the pressure value detected by the sensor is different.
When the air duct is blocked, the pressure in the air duct corresponding to the air inlet of the air duct of the indoor unit is higher than the pressure in the air duct without the blockage due to the downstream blockage, as shown in fig. 5, the pressure value is z1-z8, and it can be seen that the pressure values from z1 to z8 are gradually increased. Accordingly, since the slope value k in fig. 5 is a positive value (only k7 and k8 are shown in the figure), when the relationship between the slope and the detection time is plotted, the slope value k may be used as it is without taking the absolute value of the slope value k, and the relationship between the slope value and the detection time corresponding to fig. 5 is shown in fig. 6.
In the embodiment of the present application, the preset threshold may be set according to actual detection requirements. Taking fig. 6 as an example, if the preset threshold is 1, the second slope m8 corresponding to the time t8 obviously exceeds the preset threshold, and then at the time t8, it may be determined that a jam fault occurs in the air conditioner.
Similarly, it can be seen that, along with the increase of time, the speed of dust adsorption can be faster and faster, take the filter screen as an example, at brand-new filter screen or the filter screen after cleaning, because there is not the dust, it is unblocked, and have the dust on the filter screen after, make the aperture of filter screen reduce, and then the speed of catching dust or floater accelerates, so, along with the increase of live time, to the pressure sensor in the wind channel that the air intake of indoor set wind channel corresponds, the pressure value that pressure sensor gathered can crescent. Once the jam rate exceeds a preset threshold, a jam fault may be determined.
In other embodiments of the present application, the fixed acquisition interval is used for illustration, and in other embodiments, the acquisition interval may also be non-fixed, and step S101 of fig. 1 may adopt the following manner:
s201, controlling a pressure sensor arranged in an air duct of the air conditioner to obtain at least two historical detection pressure values according to a preset time interval.
The preset time interval may be an interval which is set in advance and is carried by the system, for example: the test is carried out once in 3 months.
S202, calculating the next collection interval based on at least two historical detection pressure values.
However, if at the same time interval, once a jam occurs, the next detection may be after 3 months, which leads to the user needing to judge in case of jam failure for another 3 months, which is obviously unreasonable. For this reason, in the embodiment of the present application, the next acquisition interval needs to be calculated according to a preset rule. Whatever the rule, the next acquisition interval should be less than the preset time interval.
In a specific embodiment, the step S201 may include the following steps:
and S20111, judging whether the two adjacent historical detection pressure values change according to the sequence of the detection time.
In the embodiment of the application, two adjacent historical detection pressure values refer to two historical detection pressure values closest to the current detection time, and whether the two adjacent historical detection pressure values change or not refers to that the two historical pressure detection values are different. In practical application, if the pressure sensor is installed in the air duct corresponding to the air outlet, the previous detection pressure value is smaller than the next detection pressure value. Secondly, if the pressure sensor is arranged in the air duct corresponding to the air inlet, the pressure value detected in the previous time is larger than the pressure value detected in the next time.
S20212, if the two adjacent historical detection pressure values are changed, determining a first time reduction amount according to a preset interval reduction rule.
In this embodiment of the present application, the preset interval reduction rule may be one tenth or one fifth of the preset interval reduction each time, for example: the preset interval is 10 days, then the first time reduction is 1 day. In other embodiments, the preset interval reduction rule may be that the amount of each reduction is increasing, for example: the first reduction by one tenth of the preset interval, for example: the preset interval is 10 days, then the first time reduction is 1 day and the second time is two tenths of the previous acquisition interval, i.e. each time the reduction is increasing. Of course, the amount of reduction at each time may also be reduced proportionally or correspondingly to the previous detection interval.
S20213, subtracting the first time decrement from the preset time interval to obtain the next collection interval.
In the specific application, considering that if the acquisition frequency is too frequent, energy consumption and calculation amount are greatly increased, for this reason, a lower limit value of a next acquisition interval can be set, whether a certain next acquisition interval is smaller than the lower limit value can be judged, if so, the calculation of the next acquisition interval is stopped, and the lower limit value is used later.
In another embodiment, the step S201 may include the following steps:
s20121, judging whether the change rate of the two adjacent historical detection pressure values meets a preset condition according to the sequence of the detection time.
In the foregoing S20111, it is determined that the adjacent historical detected pressure values change, in this embodiment of the application, for more accurate determination, a change rate of the adjacent two historical detected pressure values is adopted, which is described in the foregoing embodiment, the change rate of the adjacent two historical detected pressure values may refer to a change of a pressure slope value at a detection time corresponding to the adjacent two historical detected pressure values, and a change trend of the pressure may be more clearly described by the change of the pressure slope value, so that an influence on an acquisition interval due to data drift caused by an equipment problem in a certain detection may be avoided.
And S20122, if the change rate of the two adjacent historical detection pressure values meets the preset condition, determining the second time reduction amount according to a preset interval reduction rule.
In the embodiment of the present application, the specific decreasing process may be referred to as the step in S20212.
S20123, subtracting the second time reduction amount from the preset time interval to obtain the next acquisition interval;
in another embodiment, after at least two of the historical detected pressure values are collected, the step S201 may include the following steps:
s20131, determining a third time reduction amount according to a preset interval decreasing rule;
in the embodiment of the present application, no matter whether the historical detected pressure values of two adjacent times change, the historical detected pressure values are directly decremented according to a preset interval decrementing rule, and for a specific decrementing process, reference may be made to the step in S20212 described above.
S20132, subtracting the third time reduction amount from the preset time interval to obtain the next acquisition interval; the detection times in the preset interval decreasing rule are in direct proportion to the time reduction
And S203, controlling a pressure sensor arranged in an air duct of the air conditioner to perform next pressure detection according to a next acquisition interval to obtain a next detection pressure value.
Because frequent start-up of pressure sensor can be to making the energy consumption increase, for this reason, in this application embodiment, before starting pressure sensor and judging the jam condition of air conditioner, can also increase the judgement to the rotational speed.
In another embodiment of the present application, the method may further include the steps of:
s301, obtaining the detection rotating speed of the constant power motor of the air conditioner.
And S302, judging whether the reduction of the detection rotating speed and the preset rotating speed meets the preset reduction.
In the embodiment of the present application, the preset reduction amount may be 20% of the preset rotation speed.
And S303, if the reduction of the detection rotating speed and the preset rotating speed meets the preset reduction, executing S101.
In the embodiment of the application, the power of the constant-power motor is unchanged, and for the air conditioner, when the air resistance of the air conditioner is increased due to filth blockage of an air conditioner filter screen, a bottom shell air duct, a through-flow fan blade and an evaporator, the load torque of the motor is increased due to the increase of the wind resistance, and the rotating speed is reduced under the condition that the power of the motor is unchanged.
In the embodiment of the present application, the power of the constant power motor is represented by rotation speed and torque/9550, and the rotation speed is inversely proportional to the torque. The corresponding motor torque (T) is 9550 power (P)/speed (N) and the equation T is 9550P/N, from which it can be concluded that the torque is 9550 power/speed, the power is speed torque/9550 and the equation P is Tn/9550.
The load torque is inversely proportional to the rotating speed, that is, the mechanical characteristic is very soft, the rotating speed is correspondingly reduced when the load torque is increased, the rotating speeds of the motors in the wind speed gears are different in the normal working process of the air conditioner, the rotating speeds are uniformly named as n in the patent, and similarly, the real-time rotating speeds of the motors under the conditions of different wind speed gears are uniformly named as n in the patent. When the air conditioner mainboard detects that the ratio of n to n in the current mode is greater than 0.8, the air conditioner continues to operate; if the air conditioner mainboard detects that the ratio of P negative to P amount in the current mode is less than 0.8, the air conditioner enters a mode of judging the blocking piece by the pressure sensor, namely the method shown in fig. 1.
In addition, in either method, once it is determined that a jam fault has occurred in the air conditioner, a jam notification is generated and presented on a panel of the air conditioner.
The panel of the air conditioner can be provided with a fault indicator lamp or an LED display screen for displaying the blockage fault.
The embodiment of the application provides an air conditioner control device, which comprises a processor 111, a communication interface 112, a memory 113 and a communication bus 114, wherein the processor 111, the communication interface 112 and the memory 113 are communicated with each other through the communication bus 114,
a memory 113 for storing a computer program;
in an embodiment of the present application, the processor 111, when executing the program stored in the memory 113, implements a method for controlling an air conditioner, including:
detecting a plurality of detection pressure values at detection moments by using a pressure sensor arranged in an air duct in the air conditioner;
determining a pressure change curve of the pressure in the air duct according to the detected pressure values at the plurality of detection moments;
calculating the change rate of blockage in the air duct according to the pressure change curve;
and when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An air conditioner control method, characterized in that the method comprises:
detecting detection pressure values at a plurality of detection moments by using a pressure sensor arranged in an air duct in the air conditioner;
determining a pressure change curve of the pressure in the air duct according to the detected pressure values at the plurality of detection moments;
calculating the change rate of blockage in the air duct according to the pressure change curve;
when the blockage change rate exceeds a preset threshold value, determining that a blockage fault occurs in the air conditioner;
the determining the pressure change curve of the pressure in the air duct according to the detected pressure values at the plurality of detection moments comprises: marking a pressure value point corresponding to the pressure value at each detection moment in a first coordinate system of time and pressure values; smoothly connecting all pressure value points to obtain a pressure change curve of the air duct pressure;
the calculating the change rate of the blockage in the air duct according to the pressure change curve comprises the following steps: calculating a first slope value of a connecting line between pressure value points at two adjacent detection moments in the pressure change curve; marking a slope value point corresponding to the pressure slope value of each detection moment and the previous detection moment in a second coordinate system of time and slope value; smoothly connecting all slope value points to obtain a slope value change curve of the air duct pressure; calculating a second slope of a connecting line between slope value points of two adjacent detection moments in the slope value change curve; and taking the change rate of the second slope as the occlusion change rate.
2. The method of claim 1, wherein the detecting pressure values at a plurality of detection moments by using a pressure sensor disposed in an air duct of an air conditioner comprises:
controlling a pressure sensor arranged in an air duct of the air conditioner to obtain at least two historical detection pressure values according to a preset time interval;
calculating a next collection interval based on at least two of the historical detected pressure values;
and controlling a pressure sensor arranged in an air duct of the air conditioner to perform next pressure detection according to a next acquisition interval to obtain a next detection pressure value.
3. The method of claim 2, wherein said calculating a next acquisition interval comprises:
judging whether the two adjacent historical detection pressure values change according to the sequence of the detection time; if two adjacent historical detection pressure values change, determining a first time reduction amount according to a preset interval reduction rule, and subtracting the first time reduction amount from the preset time interval to obtain the next acquisition interval;
alternatively, the first and second electrodes may be,
judging whether the change rates of the two adjacent historical detection pressure values meet preset conditions or not according to the sequence of the detection moments, if so, determining a second time reduction amount according to a preset interval reduction rule, and subtracting the second time reduction amount from the preset time interval to obtain the next acquisition interval;
or determining a third time reduction amount according to a preset interval decreasing rule, and subtracting the third time reduction amount from the preset time interval to obtain the next acquisition interval; the detection times in the preset interval decreasing rule are in direct proportion to the time reduction.
4. The method according to any one of claims 1 to 3, wherein the pressure sensor is located in an air duct corresponding to an air inlet of the air conditioner, or wherein the pressure sensor is located in an air duct corresponding to an air outlet of the air conditioner.
5. The method according to any one of claims 1-3, further comprising:
acquiring the detection rotating speed of a constant-power motor of the air conditioner;
judging whether the reduction of the detected rotating speed and a preset rotating speed meets a preset reduction;
and if the reduction of the detection rotating speed and the preset rotating speed meets the preset reduction, executing the step of detecting the detection pressure values at a plurality of detection moments by using a pressure sensor arranged in an air duct in the air conditioner.
6. The method of claim 1, further comprising:
and if the blockage fault occurs in the air conditioner, generating a blockage prompt and prompting on a panel of the air conditioner.
7. The air conditioner control equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;
a memory for storing a computer program;
a processor for implementing the steps of the air conditioner control method according to any one of claims 1 to 6 when executing the program stored in the memory.
8. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of the air conditioner control method according to any one of claims 1 to 6.
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| CN113513805B (en) * | 2021-07-22 | 2023-01-03 | 中山市万得福电子热控科技有限公司 | Air treatment apparatus, control method thereof, and computer-readable storage medium |
| CN114383292A (en) * | 2021-12-06 | 2022-04-22 | 青岛海尔空调器有限总公司 | Air conditioner control method, air conditioner, electronic device and storage medium |
| CN114580192B (en) * | 2022-03-15 | 2023-04-11 | 北京博数智源人工智能科技有限公司 | Method and device for calculating cut-in wind speed and rated wind speed of fan |
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