CN110762728A - Indoor air conditioner simulation noise reduction control method and indoor air conditioner - Google Patents

Indoor air conditioner simulation noise reduction control method and indoor air conditioner Download PDF

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Publication number
CN110762728A
CN110762728A CN201910900413.8A CN201910900413A CN110762728A CN 110762728 A CN110762728 A CN 110762728A CN 201910900413 A CN201910900413 A CN 201910900413A CN 110762728 A CN110762728 A CN 110762728A
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noise reduction
noise
gear
fan
air conditioner
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CN110762728B (en
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马浩浩
袁林生
李伟娜
黄邵敏
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/40—Noise
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to an indoor air conditioner simulation noise reduction control method and an indoor air conditioner, which can realize active noise reduction without additionally arranging a noise collection module by measuring the corresponding relation of gear-rotating speed and/or gear-noise in advance and matching with the rotating speed corresponding to the upper limit of the measured preset noise, thereby reducing the manufacturing cost of the air conditioner and the complexity of a system. And the simulation noise reduction is adopted, so that the cost can be reduced, the low/no time delay is ensured, and the method is suitable for large-scale mass production.

Description

Indoor air conditioner simulation noise reduction control method and indoor air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an indoor air conditioner simulation noise reduction control method and an indoor air conditioner.
Background
Air conditioners have become more and more widely used, and the normal comfortable range of human hearing is between 15 decibels and 50 decibels, and the comfortable range of sound when a person sleeps is 30 decibels. Nowadays, air conditioner manufacturers mainly process noise of outdoor compressors, but noise generated by indoor fans is also not negligible. For indoor air conditioners, sometimes the inner fan generates certain noise to make people uncomfortable in hearing, the user experience is reduced, and especially for people with poor sleeping quality, the user is often greatly disturbed by slight sound.
The noise elimination means in the prior art mainly comprises: active noise reduction and passive noise reduction. The passive noise reduction is performed through a transmission path, and the active noise reduction is performed through cancellation by generating sound waves with opposite phases and same amplitude. The active noise reduction is divided into analog noise reduction and digital noise reduction, and the active noise elimination of the indoor air conditioner in the prior art mainly adopts digital noise reduction, but the cost is higher, the popularization rate is lower, and the problems of time delay and the like are accompanied.
In addition, the existing active noise reduction is accompanied with real-time noise collection, and the collected noise is offset by generating sound waves with opposite phases and constant amplitude, so that the range of the sound is controlled within a certain decibel. Therefore, it is necessary to add a noise collection module and configure a corresponding control and power supply structure in the indoor air conditioner, which undoubtedly increases the manufacturing cost of the air conditioner and the complexity of the system.
Disclosure of Invention
In order to solve the above problems, according to a first aspect of the present invention, a method for controlling noise reduction simulation of an indoor air conditioner is provided, where the indoor air conditioner has a fan, and the fan operates at one of a plurality of predetermined wind gear positions when supplying air, and the plurality of predetermined wind gear positions correspond to different rotation speeds; characterized in that the method comprises:
(1) respectively measuring the rotating speeds of the fans under the preset wind gear positions in advance and establishing a gear-rotating speed one-to-one corresponding relation; and/or the presence of a gas in the gas,
the running noise of the fan under the preset wind gear positions is respectively measured in advance, and a gear-noise one-to-one corresponding relation is established;
(2) predetermining an operating noise of the fan equal to DmaxCritical speed V corresponding to timeCritical point ofSaid D ismaxThe upper limit of comfort for a preset human body under the air supply operation noise of the indoor air conditioner is set;
(3) when the fan runs, based on the one-to-one corresponding relation of the gear-rotating speed and/or the gear-noise and the VCritical point ofAnd controlling whether to start the analog noise reduction and/or controlling to send out a noise cancellation analog noise reduction signal.
According to the invention, the corresponding relation of gear-rotating speed and/or gear-noise is measured in advance, and the rotating speed corresponding to the measured preset noise upper limit is matched, so that active noise reduction can be realized without additionally arranging a noise collection module, and the manufacturing cost of the air conditioner and the complexity of the system are reduced. Meanwhile, the invention adopts simulation noise reduction, thereby realizing cost reduction, ensuring low/no time delay and being suitable for large-scale mass production.
Further, the method comprises:
(a1) respectively measuring the rotating speeds of the fan under the preset wind gear positions in advance, and establishing a first mapping table containing a gear-rotating speed one-to-one corresponding relation;
(a2) previously determining the VCritical point of；
(a3) When the fan runs, acquiring the current running gear of the fan and inputting the current running gear into the first mapping table to inquire the corresponding rotating speed V of the fanAt present；
(a4) Judging if V isAt presentIs greater than or equal to VCritical point ofControlling to start the simulation noise reduction; if the V isAt presentLess than said VCritical point ofThen control does not initiate the analog noise reduction.
Further, the step (a1) further comprises: further, the running noise of the fan under the preset wind gear positions is respectively measured in advance, so that the first mapping table comprises a gear-noise one-to-one corresponding relation;
if the analog noise reduction is enabled in the step (a4), further comprising a step (a 5): acquiring the current operating gear of the fan, inputting the current operating gear into the first mapping table, and inquiring the corresponding noise D of the first mapping tableAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
Further, the method comprises:
(b1) respectively measuring the rotating speed and the noise of the fan under the preset wind gear positions in advance, and establishing a second mapping table containing a one-to-one correspondence relationship of gear positions-rotating speed-noise;
(b2) previously determining the VCritical point of；
(b3) When a fan runs, receiving a wind gear switching instruction, wherein the wind gear switching instruction comprises wind gears to be switched by the fan;
(b4) acquiring the wind gear to which the fan is to be switched, inputting the wind gear to the second mapping table, and inquiring the corresponding rotating speed V of the second mapping tablePseudo handoverAnd noise DPseudo handover；
(b5) Judging if V isPseudo handoverIs greater than or equal to VCritical point ofBefore the wind gear switching is finished, aiming at the DPseudo handoverControlling to prepare the set parameters required by the corresponding noise cancellation analog noise reduction signals; and when the gear switching of the wind gear is finished, the D is sent out according to the set parameter controlPseudo handoverCorresponding noise cancellation analog noise reduction signals;
if the V isPseudo handoverLess than said VCritical point ofAnd controlling not to start the simulation noise reduction when the gear shift switching of the wind gear is finished.
Further, the method comprises:
(c1) respectively measuring the rotating speeds of the fan under the preset wind gear positions in advance, and establishing a third mapping table containing a gear-rotating speed one-to-one corresponding relation;
(c2) previously determining the VCritical point of；
(c3) The rotating speed corresponding to each gear in the third mapping table and the V are presetCritical point ofComparing and will be less than said VCritical point ofThe wind gear is endowed with a low-noise label, and the value is more than or equal to VCritical point ofThe gear of the wind gear is endowed with a high-noise label;
(c4) when the fan runs, judging whether the current running gear of the fan has the low-noise label, and controlling not to start the simulation noise reduction; and if the high-noise label exists, controlling to start the analog noise reduction.
Further, the step (c1) further comprises: further, noise of the fan under the preset wind gear positions is respectively measured in advance, so that the third mapping table comprises a gear-noise one-to-one corresponding relation;
if the analog noise reduction is enabled in the step (c4), further comprising a step (c5) thereafter: acquiring the current operating gear of the fan, inputting the current operating gear into the third mapping table, and inquiring the noise D corresponding to the current operating gearAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
Further, the method comprises:
(d1) respectively measuring the noise of the fan under the preset wind gear in advance, and establishing a fourth mapping table containing a gear-noise one-to-one corresponding relation;
(d2) previously determining the VCritical point of；
(d3) When the fan runs, the rotating speed V of the running fan is obtained in real timeReal time；
(d4) If the V isReal timeIs greater than or equal to VCritical point ofControlling to start the simulation noise reduction; if the V isReal timeLess than said VCritical point ofControlling not to start the analog noise reduction;
(d5) if activated in said step (d4)If the simulation noise reduction is carried out, acquiring the current operating gear of the fan and inputting the current operating gear into the fourth mapping table to inquire the corresponding noise D of the fanAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
Further, said VReal timeThe acquisition of (A) is as follows: the V is obtained by the real-time measurement of the arranged wind speed sensorReal time(ii) a Alternatively, the V is inferred from an internal feedback signal of the blowerReal time。
Further, the noise cancellation analog noise reduction signal is DNoise reductionAnd satisfies the following conditions: i DNoise reduction–Dmax|<＝Dmax。
In a second aspect of the present invention, there is provided an indoor air conditioner, wherein the indoor air conditioner employs the above-mentioned indoor air conditioner analog noise reduction control method, and the indoor air conditioner includes: storage module, simulation noise reduction module, microprocessor module and the fan, wherein:
the storage module is used for storing the one-to-one correspondence relationship between the gears and the rotating speed and/or between the gears and the noise;
the microprocessor module sends a control electric signal to the analog noise reduction module to control the analog noise reduction module to start/stop the analog noise reduction and/or send a noise cancellation analog noise reduction signal;
and the analog noise reduction module receives the control electric signal and starts/stops the analog noise reduction and/or sends out the noise cancellation analog noise reduction signal under the control of the control electric signal.
The invention has the advantages that:
(1) according to the invention, the corresponding relation of gear-rotating speed and/or gear-noise is measured in advance, and the rotating speed corresponding to the measured preset noise upper limit is matched, so that active noise reduction can be realized without additionally arranging a noise collection module, and the manufacturing cost of the air conditioner and the complexity of the system are reduced.
(2) The invention adopts simulation noise reduction, further can realize cost reduction, ensures low/no time delay, and is suitable for large-scale mass production.
(3) According to the invention, active noise reduction can be realized under the condition of not additionally arranging a noise collection module and a wind speed sensor by pre-measuring the corresponding relation of 'gear-rotating speed-noise' and matching with the rotating speed corresponding to the upper limit of the measured preset noise, so that the manufacturing cost of the air conditioner and the complexity of the system are reduced.
(4) According to the invention, through the pre-determined corresponding relation of 'gear-rotating speed-noise' and the matching of the rotating speed corresponding to the upper limit of the determined preset noise, the set parameters required by the corresponding noise cancellation analog noise reduction signal can be prepared in advance before the gear switching is completed, so that the noise cancellation analog noise reduction signal is controlled to be sent out at the first time of completing the gear switching of the gear, and the problem of large short-time noise caused by response delay after gear shifting is avoided.
(5) According to the invention, each gear is marked as a low or high noise label in advance through the corresponding relation of gear-rotating speed-noise which is measured in advance and the rotating speed corresponding to the upper limit of the preset noise which is measured, so that whether to start the simulation noise reduction and/or to control the generation of a noise cancellation simulation noise reduction signal can be controlled according to the gear information without further inquiry during operation.
(6) According to the invention, through a two-dimensional simple corresponding relation of gear-noise which is measured in advance and the fan rotating speed which is obtained in real time, whether to start the simulation noise reduction and/or to control to send out a noise cancellation simulation noise reduction signal can be effectively controlled.
(7) The value range of the noise cancellation analog noise reduction signal set by the invention can improve the pertinence and response speed of sound wave cancellation, so that the range of sound can be controlled within a certain decibel more quickly and effectively, and the user experience and comfort are improved.
Drawings
Fig. 1 is a schematic flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 1 of the present invention;
fig. 2 is a schematic flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 2 of the present invention;
fig. 3 is a schematic flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 3 of the present invention;
fig. 4 is a schematic flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 4 of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The invention relates to a simulation noise reduction control method for an indoor air conditioner, wherein the indoor air conditioner is provided with a fan, the fan works at one of a plurality of preset wind gear positions when air supply runs, and the preset wind gear positions correspond to different rotating speeds.
The invention relates to an indoor air conditioner simulation noise reduction control method, which is mainly based on the following steps:
on one hand, the rotating speeds of the fan under the preset wind gear positions are respectively measured in advance, and a gear-rotating speed one-to-one corresponding relation is established; and/or measuring the running noise of the fan under the preset wind gear positions in advance and establishing a gear-noise one-to-one corresponding relation.
It should be noted that "pre" in the present invention refers to the testing stage before the fan is operated and may preferably be after the air conditioner is assembled. The determination of the rotating speed and the noise can be performed by an additionally provided wind speed sensor or a noise collection module in the "advanced" stage, however, the wind speed sensor and the noise collection module are used as test equipment for determining a plurality of air conditioner related parameters and are not accessories of the air conditioner.
In a second aspect, it is predetermined that the operational noise of the fan is equal to DmaxCritical speed V corresponding to timeCritical point ofSaid D ismaxThe upper limit of comfort for a preset human body under the air supply operation noise of the indoor air conditioner is set;
the DmaxIs a preset and adjustable reference value rather than an actual value. For example, a person's normal hearing comfort range is between 15 dB and 50 dB, and a person's sleeping sound comfort range is 30 dB, thus DmaxMay preferably be taken from a value between 30 and 50 decibels.
It should be noted that the present invention does not seek to cancel the operating noise of the air conditioner fan to the upper limit of the comfort of various human bodies, and actually, the person skilled in the art also knows that: due to the individual difference, it is difficult to make the noise of the air conditioner offset to meet the comfortable requirements of various human bodies. Thus, D of the present inventionmaxThe upper limit experience value is a preset upper limit reference value and is not an actual upper limit experience value of a certain human body or a certain class or several classes of human bodies. The present invention may select D from within the noise comfort interval of typical human activitymaxValues (as described above with reference to human hearing comfort and sleep comfort decibels), and in this DmaxThe value is for referring to, thereby control to some extent pertinence in good time start fall make an uproar (avoid or reduce take place to start when need not fall make an uproar and lead to should fall make an uproar process self to introduce the noise, perhaps do not in time start when the noise is great and fall the noise scheduling problem), and pertinence production opposite phase, the certain sound wave of amplitude offsets the noise, thereby played the scope control that makes sound in certain decibel to some extent, the too big problem of noise of fan production in the air conditioner is avoided, and then promote user experience sense and comfort. With respect to DmaxPlease refer to the content of example 1 below.
In a third aspect, when the fan is running, V and the one-to-one correspondence between the gear and the speed and/or the gear and the noise can be usedCritical point ofAnd controlling whether to start the analog noise reduction and/or controlling to send out a noise cancellation analog noise reduction signal.
In the present invention, "start of analog noise reduction" includes both a case of starting analog noise reduction from non-analog noise reduction and a case of starting analog noise reduction, and a case of continuing analog noise reduction from analog noise reduction (noise reduction setting parameters are usually changed). Similarly, the "not starting the analog noise reduction" of the present invention includes the case from the non-analog noise reduction to the holding of the non-analog noise reduction, and also includes the case from the analog noise reduction to the closing of the analog noise reduction.
Therefore, the invention can realize active noise reduction without additionally arranging a noise collecting module by measuring the corresponding relation of gear-rotating speed and/or gear-noise in advance and matching the rotating speed corresponding to the measured preset noise upper limit, thereby reducing the manufacturing cost of the air conditioner and the complexity of the system.
Meanwhile, the invention adopts simulation noise reduction, thereby realizing cost reduction, ensuring low/no time delay and being suitable for large-scale mass production.
In order to more fully illustrate the innovative aspects of the present invention, reference is now made to the following specific embodiments:
example 1:
referring to fig. 1, a flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 1 of the present invention mainly includes the following steps:
(a1) the method comprises the steps of measuring the rotating speeds of a fan under a plurality of preset wind gear positions in advance respectively, and establishing a first mapping table containing a gear-rotating speed one-to-one corresponding relation.
As shown in Table 1 below, gears 1 and 2 … 5 correspond to rotational speed V, respectively1、V2…V5。
(a2) Predetermining fan operating noise as DmaxCritical speed V corresponding to timeCritical point of；
(a3) When the fan runs, acquiring the current running gear of the fan and inputting the current running gear into the first mapping table to inquire the corresponding rotating speed V of the fanAt present。
For example, if the current gear is 1, the current gear is input into a mapping table to be queried to obtain a corresponding rotating speed V1At this time, the V1Is namely VAt present。
(a4) Judging if VAt presentGreater than or equal to VCritical point ofControlling to start the simulation noise reduction; if VAt presentLess than VCritical point ofThen control does not initiate the analog noise reduction.
Preferably, the step (a1) may further determine, in advance, the operating noise of the fan under the predetermined gear positions, respectively, so that the first mapping table includes a one-to-one correspondence relationship between "gear position-noise". Referring to Table 1 below, gears 1 and 2 … 5 each correspond to noise D1、D2…D5。
Accordingly, if the analog noise reduction is started in the step (a4), the method further includes a step (a 5): acquiring the current operating gear of the fan, inputting the current operating gear into the first mapping table, and inquiring the corresponding noise D of the first mapping tableAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
For example, if the current gear is 1, the current gear is input into the mapping table to be queried to obtain the noise D corresponding to the current gear1At this time, the D1Is namely DAt present. For said D1And controlling to send out corresponding noise cancellation analog noise reduction signals.
Therefore, the active noise reduction can be realized under the condition of not additionally arranging a noise collection module and an air speed sensor by pre-measuring the corresponding relation of 'gear-rotating speed-noise' and matching with the rotating speed corresponding to the measured preset upper noise limit, and the manufacturing cost of the air conditioner and the complexity of the system are reduced.
Preferably, the noise cancellation analog noise reduction signal is DNoise reductionAnd satisfies the following conditions: i DNoise reduction–Dmax|<＝Dmax. After research, when D isNoise reductionWhen satisfying above formula, can improve the pertinence and the response speed that the sound wave was offset to can be faster and more effectual scope control of sound in certain decibel, promote user experience and feel and comfort.
It should be noted that, for the designed and prepared indoor air conditioner, the configured analog noise reduction module is often determined (unless the module is replaced), so that the indoor air conditioner can provide DNoise reductionThe maximum value (absolute value) is given. When a predetermined D is determinedmaxAfter a value of DNoise reductionIn the case of satisfying the above formula and not exceeding DNoise reductionUnder the condition of the maximum value, the size of the noise reduction filter is correspondingly adjusted according to the noise condition so as to achieve the effect of canceling the noise reduction.
However, there is a case where D is presetmaxThe values are such that: even if DNoise reductionTaking the maximum value still cannot satisfy | DNoise reduction–Dmax|<＝DmaxThen, the preset D is requiredmaxThe value is adjusted until DNoise reductionCan satisfy | DNoise reduction–Dmax|<＝Dmax。
Table 1 first mapping table example
Gear position 1 2 3 4 5
Rotational speed V1 V2 V3 V4 V5
Noise(s) D1 D2 D3 D4 D5
Example 2:
referring to fig. 2, a flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 2 of the present invention mainly includes the following steps:
(b1) the rotating speed and noise of the fan under a plurality of preset wind gear positions are respectively measured in advance, and a second mapping table containing a one-to-one correspondence relation of gear positions, rotating speed and noise is established, as shown in the following table 2.
(b2) Predetermining fan operating noise as DmaxCritical speed V corresponding to timeCritical point of；
(b3) When a fan runs, receiving a wind gear switching instruction, wherein the wind gear switching instruction comprises wind gears to be switched by the fan;
for example, the switch gear command instructs the fan to switch from the current gear (assuming the current gear is 1) to gear 2.
(b4) Acquiring the wind gear to which the fan is to be switched, inputting the wind gear to the second mapping table, and inquiring the corresponding rotating speed V of the second mapping tablePseudo handoverAnd noise DPseudo handover；
For example, the gear 2 to be switched is input into the second mapping table to be inquired into the corresponding rotating speed V2And noise D2I.e. respectively the rotational speed VPseudo handoverAnd noise DPseudo handover。
(b5) Judging if VPseudo handoverGreater than or equal to VCritical point ofBefore the wind gear switching is finished, aiming at the DPseudo handoverSetting parameters (such as setting voltage, setting current, whether a certain amplifier is conducted to work and the like) required by preparing corresponding noise cancellation analog noise reduction signals are controlled; and when the gear switching of the wind gear is finished, the D is sent out according to the set parameter controlPseudo handoverCorresponding noise cancellation analog noise reduction signals; preferably, the noise cancellation analog noise reduction signal is DNoise reductionAnd satisfies the following conditions: i DNoise reduction–Dmax|<＝Dmax。
If VPseudo handoverLess than VCritical point ofAnd controlling not to start the simulation noise reduction when the gear shift switching of the wind gear is finished.
Therefore, the invention can prepare the setting parameters required by the corresponding noise cancellation simulation noise reduction signal in advance before the completion of the gear shift by the pre-determined corresponding relation of 'gear-rotating speed-noise' and matching with the rotating speed corresponding to the pre-determined upper limit of the noise, so as to control the generation of the noise cancellation simulation noise reduction signal at the first time of the completion of the gear shift, thereby avoiding the problem of large short-time noise caused by response delay after gear shift.
Table 2 second mapping table example
Gear position 1 2 3 4 5
Rotational speed V1 V2 V3 V4 V5
Noise(s) D1 D2 D3 D4 D5
Example 3:
referring to fig. 3, a flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 3 of the present invention mainly includes the following steps:
(c1) the rotating speeds of the fan under a plurality of preset wind gear positions are respectively measured in advance, and a third mapping table containing a gear-rotating speed one-to-one corresponding relation is established, and the third mapping table is referred to the following table 3;
(c2) predetermining fan operating noise as DmaxCritical speed V corresponding to timeCritical point of；
(c3) The rotating speed and V corresponding to each gear in the third mapping table are presetCritical point ofCompare, and will be less than VCritical point ofThe wind gear is endowed with a low-noise label, and the wind gear is greater than or equal to VCritical point ofThe gear of the wind gear is endowed with a high-noise label;
for example, the rotational speeds V corresponding to the gears 1, 2, 3 are compared1、V2、V3Are all less than VCritical point ofRotational speed V corresponding to gear 4, 54、V5Are all greater than VCritical point ofThen, the low noise flags are assigned to the gear positions 1, 2, and 3, and the high noise flags are assigned to the gear positions 4 and 5.
(c4) When the fan runs, judging whether the current running gear of the fan has the low-noise label, and controlling not to start the simulation noise reduction; and if the high-noise label exists, controlling to start the analog noise reduction.
For example, if the current gear is 1 and the gear 1 has a low noise label, the control does not start the analog noise reduction. If the current gear is 5 and the gear 5 has a high noise label, controlling to start the simulation noise reduction.
Preferably, the step (c1) may further determine noise of the fan under the predetermined wind gear positions in advance, so that the third mapping table includes a one-to-one correspondence relationship between "gear position and noise", see table 3 below.
Thus, if the analog noise reduction is activated in the step (c4), a step (c5) is further included thereafter: acquiring the current operating gear of the fan, inputting the current operating gear into the third mapping table, and inquiring the noise D corresponding to the current operating gearAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
Preferably, the noise cancellation analog noise reduction signal is DNoise reductionAnd satisfies the following conditions: i DNoise reduction–Dmax|<＝Dmax。
Therefore, the invention marks each gear as a low or high noise label in advance through the corresponding relation of gear-rotating speed-noise which is measured in advance and the rotating speed corresponding to the upper limit of the preset noise which is measured, thereby controlling whether to start the simulation noise reduction and/or controlling to send out a noise cancellation simulation noise reduction signal according to the gear information without further inquiry during the operation.
Table 3 third mapping table example
Gear position 1 2 3 4 5
Rotational speed V1 V2 V3 V4 V5
Noise(s) D1 D2 D3 D4 D5
Example 4:
referring to fig. 4, a flow chart of a method for controlling noise reduction simulation of an indoor air conditioner according to embodiment 4 of the present invention mainly includes the following steps:
(d1) respectively measuring the noise of the fan under the preset wind gear in advance, and establishing a fourth mapping table containing a gear-noise one-to-one corresponding relation, which is referred to the following table 4;
(d2) predetermining fan operating noise as DmaxCritical speed V corresponding to timeCritical point of；
(d3) When the fan runs, the rotating speed V of the running fan is obtained in real timeReal time；
VReal timeThe acquisition of V can be real-time measurement and acquisition of V through the arranged wind speed sensorReal time(ii) a Alternatively, V may be inferred from internal feedback signals (e.g., current, voltage, power) of the wind turbineReal time. More preferably, V is inferred from an internal feedback signal (e.g. current, voltage, power) of the wind turbineReal timeIn this way, the cost and the system complexity are effectively reduced without adding a wind speed sensor.
(d4) If VReal timeGreater than or equal to VCritical point ofControlling to start the simulation noise reduction; if VReal timeLess than VCritical point ofControlling not to start the analog noise reduction;
(d5) if it is started in said step (d4)If the simulation noise reduction is carried out, acquiring the current operating gear of the fan and inputting the current operating gear into the fourth mapping table to inquire the corresponding noise D of the fanAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
Preferably, the noise cancellation analog noise reduction signal is DNoise reductionAnd satisfies the following conditions: i DNoise reduction–Dmax|<＝Dmax。
Therefore, the invention can effectively control whether to start the simulation noise reduction and/or control to send out a noise cancellation simulation noise reduction signal by the two-dimensional simple corresponding relation of the gear-noise which is measured in advance and the fan rotating speed which is obtained in real time.
Table 4 example of fourth mapping table
Gear position 1 2 3 4 5
Noise(s) D1 D2 D3 D4 D5
In a second aspect of the present invention, there is also provided an indoor air conditioner using the analog noise reduction control method of the present invention, the indoor air conditioner including: storage module, simulation noise reduction module, microprocessor module and fan, wherein:
the storage module is used for storing the one-to-one correspondence relationship between the gears and the rotating speed and/or between the gears and the noise;
the microprocessor module sends a control electric signal to the analog noise reduction module to control the analog noise reduction module to start/stop the analog noise reduction and/or send a noise cancellation analog noise reduction signal;
and the analog noise reduction module receives the control electric signal and starts/stops the analog noise reduction and/or sends out the noise cancellation analog noise reduction signal under the control of the control electric signal.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A simulation noise reduction control method for an indoor air conditioner is characterized in that the indoor air conditioner is provided with a fan, the fan works at one of a plurality of preset wind gear positions when air supply runs, and the preset wind gear positions correspond to different rotating speeds; characterized in that the method comprises:
(1) respectively measuring the rotating speeds of the fans under the preset wind gear positions in advance and establishing a gear-rotating speed one-to-one corresponding relation; and/or the presence of a gas in the gas,
the running noise of the fan under the preset wind gear positions is respectively measured in advance, and a gear-noise one-to-one corresponding relation is established;
(2) predetermining an operating noise of the fan equal to DmaxCritical speed V corresponding to timeCritical point ofSaid D ismaxThe upper limit of comfort for a preset human body under the air supply operation noise of the indoor air conditioner is set;
(3) when the fan runs, based on the one-to-one corresponding relation of the gear-rotating speed and/or the gear-noise and the VCritical point ofAnd controlling whether to start the analog noise reduction and/or controlling to send out a noise cancellation analog noise reduction signal.
2. The indoor air conditioner analog noise reduction control method according to claim 1, wherein the method comprises:
(a1) respectively measuring the rotating speeds of the fan under the preset wind gear positions in advance, and establishing a first mapping table containing a gear-rotating speed one-to-one corresponding relation;
(a2) previously determining the VCritical point of；
(a3) When the fan runs, acquiring the current running gear of the fan and inputting the current running gear into the first mapping table to inquire the corresponding rotating speed V of the fanAt present；
(a4) Judging if V isAt presentIs greater than or equal to VCritical point ofControlling to start the simulation noise reduction; if the V isAt presentLess than said VCritical point ofThen control does not initiate the analog noise reduction.
3. The indoor air conditioner simulation noise reduction control method as claimed in claim 2, wherein the step (a1) further comprises: further, the running noise of the fan under the preset wind gear positions is respectively measured in advance, so that the first mapping table comprises a gear-noise one-to-one corresponding relation;
if the analog noise reduction is enabled in the step (a4), further comprising a step (a 5): acquiring the current operating gear of the fan, inputting the current operating gear into the first mapping table, and inquiring the corresponding noise D of the first mapping tableAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
4. The indoor air conditioner analog noise reduction control method according to claim 1, wherein the method comprises:
(b1) respectively measuring the rotating speed and the noise of the fan under the preset wind gear positions in advance, and establishing a second mapping table containing a one-to-one correspondence relationship of gear positions-rotating speed-noise;
(b2) previously determining the VCritical point of；
(b3) When a fan runs, receiving a wind gear switching instruction, wherein the wind gear switching instruction comprises wind gears to be switched by the fan;
(b4) acquiring the wind gear to which the fan is to be switched, inputting the wind gear to the second mapping table, and inquiring the corresponding rotating speed V of the second mapping tablePseudo handoverAnd noise DPseudo handover；
(b5) Judging if V isPseudo handoverIs greater than or equal to VCritical point ofBefore the wind gear switching is finished, aiming at the DPseudo handoverControlling to prepare the set parameters required by the corresponding noise cancellation analog noise reduction signals; and when the gear switching of the wind gear is finished, the D is sent out according to the set parameter controlPseudo handoverCorresponding noise cancellation analog noise reduction signals;
if the V isPseudo handoverLess than said VCritical point ofAnd controlling not to start the simulation noise reduction when the gear shift switching of the wind gear is finished.
5. The indoor air conditioner analog noise reduction control method according to claim 1, wherein the method comprises:
(c1) respectively measuring the rotating speeds of the fan under the preset wind gear positions in advance, and establishing a third mapping table containing a gear-rotating speed one-to-one corresponding relation;
(c2) previously determining the VCritical point of；
(c3) The rotating speed corresponding to each gear in the third mapping table and the V are presetCritical point ofComparing and will be less than said VCritical point ofThe wind gear is endowed with a low-noise label, and the value is more than or equal to VCritical point ofThe gear of the wind gear is endowed with a high-noise label;
(c4) when the fan runs, judging whether the current running gear of the fan has the low-noise label, and controlling not to start the simulation noise reduction; and if the high-noise label exists, controlling to start the analog noise reduction.
6. A simulation noise reduction control method for indoor air conditioners according to claim 5,
the step (c1) further comprises: further, noise of the fan under the preset wind gear positions is respectively measured in advance, so that the third mapping table comprises a gear-noise one-to-one corresponding relation;
if the analog noise reduction is enabled in the step (c4), further comprising a step (c5) thereafter: acquiring the current operating gear of the fan, inputting the current operating gear into the third mapping table, and inquiring the noise D corresponding to the current operating gearAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
7. The indoor air conditioner analog noise reduction control method according to claim 1, wherein the method comprises:
(d1) respectively measuring the noise of the fan under the preset wind gear in advance, and establishing a fourth mapping table containing a gear-noise one-to-one corresponding relation;
(d2) previously determining the VCritical point of；
(d3) When the fan runs, the rotating speed V of the running fan is obtained in real timeReal time；
(d4) If the V isReal timeIs greater than or equal to VCritical point ofControlling to start the simulation noise reduction; if the V isReal timeLess than said VCritical point ofControlling not to start the analog noise reduction;
(d5) if the simulated noise reduction is started in the step (D4), acquiring a current operating gear of the fan and inputting the current operating gear into the fourth mapping table to inquire the corresponding noise D of the fanAt present(ii) a And for said DAt presentAnd controlling to send out corresponding noise cancellation analog noise reduction signals.
8. The indoor air conditioner analog noise reduction control method as claimed in claim 7, wherein the V isReal timeThe acquisition of (A) is as follows: the V is obtained by the real-time measurement of the arranged wind speed sensorReal time(ii) a Alternatively, the V is inferred from an internal feedback signal of the blowerReal time。
9. An indoor air conditioner analog noise reduction control method as defined in any one of claims 1-8, wherein the noise cancellation analog noise reduction signal is DNoise reductionAnd satisfies the following conditions:
|Dnoise reduction–Dmax|<＝Dmax。
10. An indoor air conditioner employing the indoor air conditioner simulation noise reduction control method according to any one of claims 1 to 9, comprising: storage module, simulation noise reduction module, microprocessor module and the fan, wherein:
the storage module is used for storing the one-to-one correspondence relationship between the gears and the rotating speed and/or between the gears and the noise;
the microprocessor module sends a control electric signal to the analog noise reduction module to control the analog noise reduction module to start/stop the analog noise reduction and/or send a noise cancellation analog noise reduction signal;
and the analog noise reduction module receives the control electric signal and starts/stops the analog noise reduction and/or sends out the noise cancellation analog noise reduction signal under the control of the control electric signal.
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