CN110658382A - Power detection method and device, air conditioner and storage medium - Google Patents
Power detection method and device, air conditioner and storage medium Download PDFInfo
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- CN110658382A CN110658382A CN201910954781.0A CN201910954781A CN110658382A CN 110658382 A CN110658382 A CN 110658382A CN 201910954781 A CN201910954781 A CN 201910954781A CN 110658382 A CN110658382 A CN 110658382A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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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
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/60—Energy consumption
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention provides a power detection method, a power detection device, an air conditioner and a storage medium, wherein the power detection method of an alternating current fan comprises the following steps: determining an access parameter according to the feedback rotating speed of the alternating current fan and the target rotating speed; accessing a preset power meter according to the access parameters to configure an access result; and determining the power of the alternating current fan according to the access result. By executing the scheme, on one hand, the determination mode has higher calculation precision, on the other hand, the preset power meter is stored, so that the calculation process is facilitated to be simplified, the processing load of a processor of the air conditioner is reduced, and on the other hand, compared with the mode in which detection hardware needs to be added in the related art, the mode does not need to additionally add the detection hardware, so that the improvement cost is lower.
Description
Technical Field
The invention relates to the field of air conditioner control, in particular to a power detection method, a power device, an air conditioner and a computer readable storage medium.
Background
The air conditioner belongs to a product with high power consumption, the power of the indoor fan is also an important component of the running power of the air conditioner, and how to reliably determine the power of the indoor fan and feed the power back to a user becomes a technical problem to be solved urgently.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the present invention to propose a new power detection method.
Another object of the present invention is to provide a power detection apparatus.
Another object of the present invention is to provide an air conditioner.
Another object of the present invention is to provide a computer-readable storage medium.
In order to achieve at least one of the above objects, according to a first aspect of the present invention, a method for detecting power of an ac fan is provided, which specifically includes: determining an access parameter according to the feedback rotating speed of the alternating current fan and the target rotating speed; accessing a preset power meter according to the access parameters to configure an access result; and determining the power of the alternating current fan according to the access result.
In the technical scheme, the indoor fan is an alternating current fan, the detection of the power of the alternating current fan is realized in a table look-up mode by setting a preset power meter, an access parameter is obtained by combining the detection of the alternating current fan and the configuration of a target rotating speed, so that the table look-up operation is carried out on the preset power meter based on the access parameter, the access parameter is determined according to the feedback rotating speed and the target rotating speed of the alternating current fan, the preset power meter is accessed according to the access parameter, an access result is obtained from the preset power meter, and the real-time power of the alternating current fan is determined based on the access result, on one hand, the determination mode has higher calculation precision, on the other hand, the calculation process is facilitated to be simplified by storing the preset power meter, so that the processing load of a processor of the air conditioner is reduced, on the other hand, compared with the mode that detection hardware needs, the method does not need to additionally increase detection hardware, so the improvement cost is lower.
Further, the power of the alternating current fan is converted into a unit power consumption representation, the unit power consumption representation is displayed in a display area of the air conditioner or is sent to an adaptive user terminal to be fed back to a user, on one hand, whether the rotating speed of the fan is adjusted or not can be determined based on the unit power consumption for the user, and on the other hand, whether power consumption reduction development is further conducted or not can be determined based on the unit power consumption for a developer.
In the above technical solution, determining an access parameter according to the feedback rotation speed of the ac fan and the target rotation speed specifically includes: determining the driving duty ratio of the input alternating current fan according to the target rotating speed and the feedback rotating speed; determining a first access parameter according to the driving duty ratio and the effective power supply voltage of the indoor unit; and recording the feedback rotating speed as a second access parameter.
The effective power supply voltage, i.e. the effective value of the power supply voltage, can be regarded as a dc voltage value, and can be calculated based on the actually input ac voltage and the thermal effect of the alternating current, i.e. the thermal effect of the current voltage is equal to the thermal effect of the effective power supply voltage.
In the technical scheme, a first access parameter is determined according to the driving duty ratio of the alternating current fan and the effective value of the power supply voltage, a second access parameter is determined according to the feedback rotating speed of the fan, wherein the first access parameter is used for measuring the electric energy input to the fan, the second access parameter is used for measuring the converted mechanical energy, and a preset power meter is accessed based on the two access parameters so as to obtain the power of the alternating current fan in the indoor unit with higher precision.
In any one of the above technical solutions, determining the drive duty ratio of the input ac fan according to the target rotation speed and the feedback rotation speed specifically includes: determining a deviation value between the target rotating speed and the feedback rotating speed; and carrying out proportional adjustment and integral adjustment on the deviation value to generate a driving duty ratio.
In the technical scheme, the alternating-current fan is driven to operate through the driving control circuit, the driving control circuit comprises the PI controller, the effective input voltage of the fan is further obtained through a pulse modulation signal corresponding to the duty ratio and an effective power supply voltage by detecting a deviation value between a target rotating speed and a feedback rotating speed and inputting the deviation value into the PI controller to carry out PI operation, and the duty ratio is determined based on an operation result, so that the access requirement on a preset power meter can be met based on the obtained high-accuracy access parameter in real time.
In any of the above technical solutions, determining the first access parameter according to the driving duty ratio and the effective power supply voltage specifically includes: and determining the effective input voltage of the alternating current fan according to the driving duty ratio, the effective power supply voltage and a preset fan effective input voltage function so as to determine the effective input voltage as a first access parameter.
Wherein the effective input voltage function
Vrms is the effective input voltage, Vs is the effective supply voltage, and D is the drive duty cycle.
In the technical scheme, the effective input voltage of the alternating-current fan is determined according to the fan drive ratio, the effective power supply voltage value and a preset fan effective input voltage function, the effective input voltage value is determined as a first access parameter, and parameters required for accessing the preset power meter are determined by combining a second access parameter determined by the feedback rotating speed, so that the access result can be rapidly acquired, and the power of the current alternating-current fan is determined based on the access result.
In any of the above technical solutions, accessing a preset power table according to an access parameter to configure an access result specifically includes: determining a voltage interval to which the effective input voltage belongs and a rotating speed interval to which the feedback rotating speed belongs according to a preset power meter; in the preset power table, determining first power corresponding to a lower limit threshold of a rotating speed section and a lower limit threshold of a voltage section, second power corresponding to an upper limit threshold of the rotating speed section and a lower limit threshold of the voltage section, third power corresponding to the lower limit threshold of the rotating speed section and an upper limit threshold of the voltage section, and fourth power corresponding to the upper limit threshold of the rotating speed section and the upper limit threshold of the voltage section so as to determine the first power, the second power, the third power and the fourth power as access results.
In the technical scheme, in order to further improve the precision and reliability of the ac fan obtained by the determination method in the present application, in a preset power table, an effective input voltage is divided into a plurality of voltage intervals, a feedback rotating speed is divided into a plurality of rotating speed intervals, a voltage interval in which the currently detected effective input voltage is located and a rotating speed interval in which the feedback rotating speed is located are determined, each voltage interval includes an upper limit voltage threshold and a lower limit voltage threshold, each rotating speed interval includes an upper limit rotating speed threshold and a lower limit rotating speed threshold, wherein in the preset power table, the upper limit voltage threshold corresponds to one power with the upper limit rotating speed threshold, the upper limit voltage threshold corresponds to one power with the lower limit rotating speed threshold, the lower limit voltage threshold corresponds to one power with the lower limit rotating speed threshold, and the four accessed power values are determined as an access result, the required power of the alternating current fan is obtained through further processing of the access result, so that the accuracy and the reliability of power acquisition are guaranteed.
In any of the above technical solutions, determining the power of the ac fan according to the access result specifically includes: and carrying out piecewise linearization processing on the first power, the second power, the third power and the fourth power so as to determine a processing result as the power of the alternating current fan.
In any of the above technical solutions, the step of performing piecewise linearization on the first power, the second power, the third power, and the fourth power to determine a processing result as the power of the ac fan specifically includes: performing piecewise linearization processing on the first power, the second power and an upper threshold and a lower threshold of a voltage interval to determine a first reference power; performing piecewise linearization on the third power, the fourth power and the upper threshold and the lower threshold of the voltage interval to determine a second reference power; and performing piecewise linearization processing on the first reference power, the second reference power and the lower threshold and the upper threshold of the rotating speed interval to determine the power of the alternating current fan.
In the technical scheme, the method comprises the steps of performing piecewise linearization, namely taking a nonlinear numerical value as piecewise linearization processing, equivalently using the nonlinear numerical value as a linear system, combining an upper limit threshold and a lower limit threshold of a voltage interval and a lower limit threshold and an upper limit threshold of a rotating speed interval through the obtained first power, second power, third power and fourth power to obtain a linear processing curve, obtaining the required power of the alternating current fan based on the linear processing curve, and ensuring the accuracy of the obtained power of the alternating current fan by combining empirical data in a prestored power table and a piecewise linearization processing mode.
In any of the above technical solutions, according to the first power, the second power, and an upper threshold and a lower threshold of a voltage interval, performing piecewise linearization processing to determine the first reference power, specifically including: a first reference power is determined according to the first power calculation formula.
Wherein the first reference power is determined according to the first power calculation formula.
Specifically, the first power calculation formula is
P1Is a first reference power, PacIs a first power, PadIs a second power, VrmsFor effective input voltage, VcIs the lower threshold value of the voltage interval, VdIs the upper threshold of the voltage interval.
In any of the above technical solutions, according to the third power, the fourth power, and the upper threshold and the lower threshold of the voltage interval, performing piecewise linearization processing to determine the second reference power, specifically including: and determining a second reference power according to the second power calculation formula.
And determining a second reference power according to the second power calculation formula.
Specifically, the second power calculation formula is
P2Is a second reference power, PbcIs a third power, PbdIs a fourth power, VrmsFor effective input voltage, VcIs the lower threshold value of the voltage interval, VdIs the upper threshold of the voltage interval.
In any of the above technical solutions, according to the first reference power, the second reference power, and a lower threshold and an upper threshold of the rotation speed interval, performing piecewise linearization processing to determine the power of the ac fan, specifically including: and determining the power of the alternating current fan according to the third power calculation formula.
In the technical scheme, the power of the alternating current fan is determined according to a third power calculation formula.
Wherein the third power is calculated as
P is the power of the AC fan, P1Is a first reference power, P2Is the second reference power, N is the feedback rotation speed, NbIs the upper threshold value of the speed interval, NaIs the lower threshold value of the rotating speed interval.
In any of the above technical solutions, before determining the access parameter according to the feedback rotation speed of the ac fan and the target rotation speed, the method further includes: and measuring the actual power of the alternating-current fan under different effective input voltages and different feedback rotating speeds by using a power measuring instrument so as to generate a preset power meter according to the effective input voltages, the feedback rotating speeds and the actual power.
In the technical scheme, before the determination mode of the power of the alternating current fan is stored in a memory of an air conditioner in a program code mode, the effective value (namely effective input voltage) and the rotating speed (namely feedback rotating speed) of the voltage of the fan are changed, the actual power of the alternating current fan under different effective input voltages and different feedback rotating speeds is measured through a power meter, a series of fan power tables corresponding to different effective values of the voltage of the fan and different rotating speeds are further obtained and stored in the memory as a preset power table, and the actual power of the alternating current fan is obtained by combining the determination program of the power of the fan.
According to a second aspect of the present invention, there is provided a power detection device for an ac fan, comprising: a memory and a processor; a memory for storing program code; the processor is configured to execute the steps of the power detection method for the ac fan according to any one of the technical solutions of the first aspect of the present invention.
According to a third aspect of the present invention, there is provided an air conditioner comprising the ac fan power detection device according to any one of the fourth aspects.
According to an aspect of the fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the power detection method according to any one of the aspects of the first aspect.
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 shows a flow diagram of a power detection method according to an embodiment of the invention;
FIG. 2 shows a flow diagram of a power detection method according to another embodiment of the invention;
FIG. 3 shows a flow diagram of a power detection method according to another embodiment of the invention;
FIG. 4 shows a flow diagram of a power detection method according to another embodiment of the invention;
FIG. 5 shows a flow diagram of a power detection method according to another embodiment of the invention;
FIG. 6 illustrates a schematic diagram of AC fan control logic in accordance with one embodiment of the present invention;
fig. 7 shows a schematic block diagram of a power detection arrangement according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The air conditioner may be an integrated air conditioner or a split air conditioner, the air conditioner includes an indoor unit and an outdoor unit, an indoor fan is disposed in the indoor unit, the indoor fan is specifically an ac fan, and a detection method of power of the ac fan is described below with reference to specific embodiments.
The first embodiment is as follows:
as shown in fig. 1, a power detection method according to an embodiment of the present invention includes: and step 102, determining access parameters according to the feedback rotating speed of the alternating current fan and the target rotating speed.
And obtaining access parameters by detecting the alternating current fan and configuring the target rotating speed.
And 104, accessing a preset power meter according to the access parameters to configure an access result.
And step 106, determining the power of the alternating current fan according to the access result.
Before step 104, the method further includes: and measuring the actual power of the alternating-current fan under different effective input voltages and different feedback rotating speeds by using a power measuring instrument so as to generate a preset power meter according to the effective input voltages, the feedback rotating speeds and the actual power.
In this embodiment, before the determination manner of the power of the ac fan is stored in the memory of the air conditioner in the form of program codes, the effective value (i.e., effective input voltage) and the rotational speed (i.e., feedback rotational speed) of the fan voltage are changed, the actual power of the ac fan is measured by the power meter under different effective input voltages and different feedback rotational speeds, and then a series of fan power tables corresponding to different effective values of the fan voltage and different rotational speeds are obtained and stored in the memory as the preset power table, and the actual power of the ac fan is obtained by combining the determination program of the fan power.
In the embodiment, the preset power meter is arranged, the power of the alternating current fan is detected by combining the access parameters in a table look-up mode, the access parameters are determined according to the feedback rotating speed and the target rotating speed of the alternating current fan, the preset power meter is accessed according to the access parameters, the access result is obtained from the preset power meter, and the real-time power of the alternating current fan is determined based on the access result.
Example two:
as shown in fig. 2, step 102 specifically includes: and 202, determining the driving duty ratio of the input alternating current fan according to the target rotating speed and the feedback rotating speed.
Wherein, step 202 specifically includes: determining a deviation value between the target rotating speed and the feedback rotating speed; and carrying out proportional adjustment and integral adjustment on the deviation value to generate a driving duty ratio.
In the technical scheme, the alternating-current fan is driven to operate through the driving control circuit, the driving control circuit comprises the PI controller, the effective input voltage of the fan is further obtained through a pulse modulation signal corresponding to the duty ratio and an effective power supply voltage by detecting a deviation value between a target rotating speed and a feedback rotating speed and inputting the deviation value into the PI controller to carry out PI operation, and the duty ratio is determined based on an operation result, so that the access requirement on a preset power meter can be met based on the obtained high-accuracy access parameter in real time.
And 204, determining a first access parameter according to the driving duty ratio and the effective power supply voltage of the indoor unit.
Wherein, step 204 specifically includes: and determining the effective input voltage of the alternating current fan according to the driving duty ratio, the effective power supply voltage and a preset fan effective input voltage function so as to determine the effective input voltage as a first access parameter.
Wherein the effective input voltage function is:
vrms is the effective input voltage, Vs is the effective supply voltage, and D is the drive duty cycle.
In the technical scheme, the effective input voltage of the alternating-current fan is determined according to the fan drive ratio, the effective power supply voltage value and a preset fan effective input voltage function, the effective input voltage value is determined as a first access parameter, and parameters required for accessing the preset power meter are determined by combining a second access parameter determined by the feedback rotating speed, so that the access result can be rapidly acquired, and the power of the current alternating-current fan is determined based on the access result.
And step 206, recording the feedback rotating speed as a second checking parameter.
In the embodiment, a first access parameter is determined according to the driving duty ratio of the alternating current fan and the effective value of the power supply voltage, a second access parameter is determined according to the feedback rotating speed of the fan, wherein the first access parameter is used for measuring the electric energy input to the fan, the second access parameter is used for measuring the converted mechanical energy, and based on the two access parameters, a preset power meter is accessed to obtain the power of the alternating current fan in the indoor unit with higher precision.
Example three:
as shown in fig. 3, step 102 specifically includes:
step 302, determining a voltage interval to which the effective input voltage belongs and a rotating speed interval to which the feedback rotating speed belongs according to a preset power meter;
step 304, determining a first power corresponding to a lower limit threshold of a rotating speed interval and a lower limit threshold of a voltage interval, a second power corresponding to an upper limit threshold of the rotating speed interval and a lower limit threshold of the voltage interval, a third power corresponding to the lower limit threshold of the rotating speed interval and the upper limit threshold of the voltage interval, and a fourth power corresponding to the upper limit threshold of the rotating speed interval and the upper limit threshold of the voltage interval in a preset power table;
step 306, determining the first power, the second power, the third power and the fourth power as the access result.
In this embodiment, in order to further improve the accuracy and reliability of the ac fan obtained by the determination method in the present application, in the preset power table, the effective input voltage is divided into a plurality of voltage intervals, the feedback rotation speed is divided into a plurality of rotation speed intervals, by determining the voltage interval in which the currently detected effective input voltage is located and the rotation speed interval in which the feedback rotation speed is located, each voltage interval includes an upper limit voltage threshold and a lower limit voltage threshold, each rotation speed interval includes an upper limit rotation speed threshold and a lower limit rotation speed threshold, wherein in the preset power table, the upper limit voltage threshold corresponds to one power with respect to the upper limit rotation speed threshold, the upper limit voltage threshold corresponds to one power with respect to the lower limit rotation speed threshold, the lower limit voltage threshold corresponds to one power with respect to the lower limit rotation speed threshold, and the four power values obtained by the access are determined as the access result, the required power of the alternating current fan is obtained through further processing of the access result, so that the accuracy and the reliability of power acquisition are guaranteed.
Example four:
step 106, specifically comprising: and carrying out piecewise linearization processing on the first power, the second power, the third power and the fourth power so as to determine a processing result as the power of the alternating current fan.
As shown in fig. 4, the specific steps include: step 402, executing piecewise linearization processing on the upper limit threshold and the lower limit threshold of the first power, the second power and the voltage interval, and determining a first reference power;
step 404, performing piecewise linearization on the third power, the fourth power and an upper threshold and a lower threshold of a voltage interval to determine a second reference power;
and 406, performing piecewise linearization on the first reference power, the second reference power, the lower limit threshold of the rotating speed interval and the upper limit threshold, and determining the power of the alternating current fan.
In this embodiment, the step linearization process is to take a nonlinear numerical value as the step linearization process, equivalently use the linear system, obtain a linear processing curve by combining the first power, the second power, the third power and the fourth power obtained above, the upper limit threshold and the lower limit threshold of the voltage interval, and the lower limit threshold and the upper limit threshold of the rotation speed interval, obtain the required power of the ac fan based on the linear processing curve, and ensure the accuracy of the obtained power of the ac fan by combining the empirical data in the prestored power table and the step linearization processing mode.
Wherein the first reference power is determined according to the first power calculation formula (2).
And determining a second reference power according to the second power calculation formula (3).
And determining the power of the alternating current fan according to the third power calculation formula (4).
The first power calculation equation is:
P1is a first reference power, PacIs a first power, PadIs a second power, VrmsFor effective input voltage, VcIs the lower threshold value of the voltage interval, VdIs the upper threshold of the voltage interval.
The second power calculation equation is:
P2is a second reference power, PbcIs a third power, PbdIs a fourth power, VrmsFor effective input voltage, VcIs the lower threshold value of the voltage interval, VdIs the upper threshold of the voltage interval.
The third power calculation equation is:
p is the power of the AC fan, P1Is a first reference power, P2Is the second reference power, N is the feedback rotation speed, NbIs the upper threshold value of the speed interval, NaIs the lower threshold value of the rotating speed interval.
Example five:
as shown in fig. 5, a power detection method according to another embodiment of the present invention includes:
step 502, detecting the effective power supply voltage V through the outdoor electric control boardsAnd sending the data to the indoor unit;
step 504, determining the duty ratio D of the indoor fan driving signal;
step 506, according to the effective power voltage VsAnd duty ratio D of the driving signal, calculating effective input voltage V of the AC fanrms；
Wherein, VrmsAnd calculating by using an effective input voltage function.
Step 508, change the effective input voltage VyAnd a target rotational speed NxAnd measuring the actual power of the air outlet machine through a power meter to obtain different effective input voltages and different preset power meters corresponding to the target rotating speeds.
Wherein the effective input voltage VyAnd a target rotational speed NxCorresponding fan power is PxyAs shown in table 1;
TABLE 1
Step 510, detecting the feedback rotating speed N of the alternating current fan;
step 512, determining the feedback rotating speed N of the alternating current fan and the calculated effective value V of the fan voltagermsAccording to N and VrmsIn the section, 4 indoor fan powers P are obtained by checking a fan power meterac、Pad、Pbc、Pbd；
TABLE 2
| Vc | V | Vd | |
| Na | Pac | P1 | Pad |
| N | P | ||
| Nb | Pbc | P2 | Pbd |
Step 514, according to Pac、Pad、Vc、VdV, obtaining power P1 by piecewise linearization;
wherein, the calculation formula is a first power calculation formula.
Step 516, according to Pbc、Pbd、Vc、VdV, obtaining power P2 by piecewise linearization;
wherein the calculation formula is a second power calculation formula.
Step 518, according to P1, P2, NaN, N, obtaining the actual power P of the fan by piecewise linearization,
wherein the calculation formula is a third power calculation formula.
As shown in fig. 6, given a target rotation speed of the fan, the duty ratio of the fan driving signal is adjusted through closed-loop control, so that the feedback rotation speed of the fan is adjusted to the target rotation speed, and the power of the fan depends on the feedback rotation speed and the effective input voltage of the fan.
According to the method, the power of the indoor alternating-current fan is calculated through the actions of the steps, and the power of the indoor alternating-current fan is obtained in real time through software calculation on the basis that the hardware cost is not increased.
Example six:
as shown in fig. 7, the power detection apparatus 70 according to the embodiment of the present invention includes: a memory 702 and a processor 704.
A memory 702 for storing program code; the processor 704 is configured to invoke a program code to execute the power detection method of the ac fan according to any of the embodiments.
Example seven:
the air conditioner according to the embodiment of the present invention includes the power detection device 70 described in the above embodiment.
In this embodiment, the air conditioner includes any one of the operation control devices, so that all the beneficial technical effects of the operation control device are achieved, and are not described herein again.
Practice ofExample eight:
in one embodiment of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of an air conditioner as set forth in any one of the above.
In this embodiment, the computer program is executed by the processor to implement the steps of the control method of the air conditioner as described in any one of the above embodiments, so that all the beneficial technical effects of the control method of the air conditioner are achieved, and are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. A power detection method of an alternating current fan is suitable for an indoor unit of an air conditioner, and is characterized by comprising the following steps:
determining an access parameter according to the feedback rotating speed of the alternating current fan and the target rotating speed;
accessing a preset power meter according to the access parameters to configure an access result;
and determining the power of the alternating current fan according to the access result.
2. The power detection method according to claim 1, wherein the determining the access parameter according to the feedback rotation speed and the target rotation speed of the ac fan specifically comprises:
determining a driving duty ratio input into the alternating current fan according to the target rotating speed and the feedback rotating speed;
determining a first access parameter according to the driving duty ratio and the effective power supply voltage of the indoor unit; and
and recording the feedback rotating speed as a second access parameter.
3. The power detection method according to claim 2, wherein the determining the driving duty ratio input to the ac fan according to the target rotation speed and the feedback rotation speed specifically includes:
determining a deviation value between the target rotation speed and the feedback rotation speed;
and carrying out proportional adjustment and integral adjustment on the deviation value to generate the driving duty ratio.
4. The power detection method according to claim 2, wherein the determining a first access parameter according to the driving duty cycle and the effective power supply voltage specifically comprises:
determining an effective input voltage of the AC fan according to the driving duty ratio, the effective power supply voltage and a preset fan effective input voltage function so as to determine the effective input voltage as the first access parameter,
wherein the effective input voltage function
Vrms is the effective input voltage, Vs is the effective supply voltage, and D is the drive duty cycle.
5. The power detection method according to claim 4, wherein the accessing a preset power table according to the access parameter to configure an access result specifically includes:
according to the preset power meter, determining a voltage interval to which the effective input voltage belongs and a rotating speed interval to which the feedback rotating speed belongs;
and determining first power corresponding to a lower limit threshold of the rotating speed section and a lower limit threshold of the voltage section, second power corresponding to an upper limit threshold of the rotating speed section and a lower limit threshold of the voltage section, third power corresponding to the lower limit threshold of the rotating speed section and an upper limit threshold of the voltage section, and fourth power corresponding to the upper limit threshold of the rotating speed section and the upper limit threshold of the voltage section in the preset power table, so as to determine the first power, the second power, the third power and the fourth power as the access result.
6. The power detection method according to claim 5, wherein the determining the power of the alternating current fan according to the access result specifically includes:
and carrying out piecewise linearization processing on the first power, the second power, the third power and the fourth power so as to determine a processing result as the power of the alternating current fan.
7. The power detection method according to claim 6, wherein the step of performing piecewise linearization on the first power, the second power, the third power, and the fourth power to determine a processing result as the power of the ac fan specifically includes:
according to the first power, the second power and an upper threshold and a lower threshold of the voltage interval, executing piecewise linearization processing to determine a first reference power;
according to the third power, the fourth power and the upper threshold and the lower threshold of the voltage interval, executing piecewise linearization processing to determine a second reference power;
and executing piecewise linearization processing according to the first reference power, the second reference power and the lower threshold and the upper threshold of the rotating speed interval, and determining the power of the alternating current fan.
8. The power detection method according to claim 7, wherein the performing a piecewise linearization process according to the first power, the second power, and an upper threshold and a lower threshold of the voltage interval to determine the first reference power specifically includes:
determining the first reference power according to a first power calculation formula,
wherein the first power calculation formula is
P1Is the first reference power, PacIs the first power, PadIs the second power, VrmsFor the effective input voltage, VcIs the lower threshold value of the voltage interval, VdIs the upper threshold of the voltage interval.
9. The power detection method according to claim 8, wherein the step of performing a piecewise linearization process according to the third power, the fourth power, and an upper threshold and a lower threshold of the voltage interval to determine a second reference power specifically includes:
determining the second reference power according to a second power calculation formula,
wherein the second power calculation formula is
P2Is the second reference power, PbcIs the third power, PbdIs the fourth power, VrmsFor the effective input voltage, VcIs the lower threshold value of the voltage interval, VdIs the upper threshold of the voltage interval.
10. The power detection method according to claim 9, wherein the step of performing piecewise linearization processing according to the first reference power, the second reference power, and a lower threshold and an upper threshold of a rotation speed interval to determine the power of the ac fan specifically includes:
determining the power of the alternating current fan according to a third power calculation formula,
wherein the third power calculation formula is
P is the power of the AC fan, P1Is the first reference power, P2Is the second reference power, N is the feedback rotation speed, NbIs the upper threshold value of the speed interval, NaIs the lower threshold value of the rotating speed interval.
11. The power detection method according to any one of claims 4 to 10, wherein before determining the access parameter according to the feedback rotation speed of the ac fan and the target rotation speed, the method further comprises:
and measuring the actual power of the alternating current fan under different effective input voltages and different feedback rotating speeds by adopting a power measuring instrument so as to generate the preset power meter according to the effective input voltages, the feedback rotating speeds and the actual power.
12. A power detection device of an alternating current fan is characterized by comprising: a memory and a processor;
the memory for storing program code;
the processor is used for calling the program code to execute the power detection method of the alternating current fan according to any one of claims 1 to 11.
13. An air conditioner, comprising:
the power detection device of an ac blower of claim 12.
14. A computer-readable storage medium, having an operation control program stored thereon, wherein the operation control program, when executed by a processor, implements the power detection method of an ac fan according to any one of claims 1 to 11.
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