CN104132429A - Method, device and system for controlling variable-frequency air conditioner - Google Patents
Method, device and system for controlling variable-frequency air conditioner Download PDFInfo
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- CN104132429A CN104132429A CN201410401739.3A CN201410401739A CN104132429A CN 104132429 A CN104132429 A CN 104132429A CN 201410401739 A CN201410401739 A CN 201410401739A CN 104132429 A CN104132429 A CN 104132429A
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Abstract
The invention discloses a method, device and system for controlling a variable-frequency air conditioner. The method includes the steps of obtaining running frequencies of the variable-frequency air conditioner and noise signals corresponding to the running frequencies; generating a frequency and noise distribution curve of the variable-frequency air conditioner on the basis of the running frequencies and the noise signals; determining one or more target frequencies of the variable-frequency air conditioner according to the distribution curve, wherein the values of the noise signals corresponding to the target frequencies are not higher than the preset noise threshold value; controlling the variable-frequency air conditioner to run at the target frequency corresponding to the running request of the variable-frequency air conditioner. By means of the method, device and system for controlling the variable-frequency air conditioner, the problem that in the prior art, noise changes are large in the running process of a variable-frequency air conditioner system is solved, and the effects of ceaselessly controlling noises of the variable-frequency air conditioner and being low in noise are achieved.
Description
Technical field
The present invention relates to air-conditioning control field, in particular to a kind of control method, Apparatus and system of convertible frequency air-conditioner.
Background technology
In prior art, the normal running frequency of frequency conversion off-premises station haves a wide reach, in the time of Design of Variable Frequence Air Conditioner, can adopt the partial resonance point existing for the outer machine structure of frequency conversion to carry out its running frequency point and evade design, to prevent that convertible frequency air-conditioner from producing relevant vibration and noise problem in resonance point operation.
But, due to the assembling uniformity of convertible frequency air-conditioner existence itself and the difference of installation environment, all can cause the variation of frequency conversion off-premises station system dynamics feature, cause the variation of system resonance point.Existing scheme can not accurately catch these variations, conventionally can cause frequency conversion off-premises station large at some operating mode running noises, causes customer complaint, reduces the public praise of product.
While operation for frequency-conversion air-conditioning system in prior art, the very large problem of noise variation, not yet proposes effective solution at present.
Summary of the invention
While operation for frequency-conversion air-conditioning system in correlation technique, the very large problem of noise variation, not yet proposes effective solution at present, and for this reason, main purpose of the present invention is to provide a kind of control method, Apparatus and system of convertible frequency air-conditioner, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of control method of convertible frequency air-conditioner, this control method comprises: obtain the running frequency of convertible frequency air-conditioner and the noise signal corresponding with running frequency; Based on the frequency noise distribution curve of running frequency and noise signal generation convertible frequency air-conditioner; Determine one or more target frequencies of convertible frequency air-conditioner according to distribution curve, wherein, the value of the noise signal that target frequency is corresponding is not higher than default noise threshold; Control convertible frequency air-conditioner operates in the operation of convertible frequency air-conditioner asks on corresponding target frequency.
Further, the frequency noise distribution curve based on running frequency and noise signal generation convertible frequency air-conditioner comprises: by A/D converter, noise signal is converted to data signal; Calculate the indicated acoustic pressure of data signal and the sound pressure level of reference sound pressure; Draw the frequency noise distribution curve of running frequency and sound pressure level.
Further, determine that according to distribution curve one or more target frequencies of convertible frequency air-conditioner comprise: the frequency range of the compressor operating of convertible frequency air-conditioner is divided into N frequency field; Using in each frequency field not higher than the running frequency of default noise threshold as target frequency.
Further, will in each frequency field, not comprise as target frequency higher than the running frequency of default noise threshold: obtain sound pressure level corresponding to each running frequency in frequency field; Running frequency minimum sound pressure level is defined as to the not target frequency higher than default noise threshold.
Further, will in each frequency field, not comprise as target frequency higher than the running frequency of default noise threshold: obtain sound pressure level corresponding to each running frequency in frequency field; Sound pressure level is not defined as to target frequency higher than default noise threshold and the running frequency that is not less than default minimum noise.
Further, control convertible frequency air-conditioner operates in the operation of convertible frequency air-conditioner asks to comprise on corresponding target frequency: obtain operation request, wherein, in operation request, carry the frequency of asking operation; Determine the frequency field corresponding to frequency of request operation; Obtain the target frequency of frequency field; Control convertible frequency air-conditioner and operate in target frequency.
To achieve these goals, according to a further aspect in the invention, provide a kind of control device of convertible frequency air-conditioner, this control device comprises: acquiring unit, for obtaining the running frequency of convertible frequency air-conditioner and the noise signal corresponding with running frequency; Generation unit, for the frequency noise distribution curve based on running frequency and noise signal generation convertible frequency air-conditioner; Determining unit, for determine one or more target frequencies of convertible frequency air-conditioner according to distribution curve, wherein, the value of the noise signal that target frequency is corresponding is not higher than default noise threshold; Control module, operates in the operation of convertible frequency air-conditioner and asks corresponding target frequency for controlling convertible frequency air-conditioner.
Further, generation unit comprises: modular converter, for noise signal being converted to data signal by A/D converter; The first computing module, for calculating the sound pressure level of the indicated acoustic pressure of data signal and reference sound pressure; Drafting module, for drawing the frequency noise distribution curve of running frequency and sound pressure level.
Further, determining unit comprises: division module, for the frequency range of the compressor operating of convertible frequency air-conditioner being divided into N frequency field; The first determination module, for using each frequency field not higher than the running frequency of default noise threshold as target frequency.
Further, the first determination module comprises: the first acquisition module, for obtaining the sound pressure level corresponding to each running frequency of frequency field; First determines submodule, for running frequency minimum sound pressure level being defined as to the not target frequency higher than default noise threshold.
Further, the first determination module comprises: the second acquisition module, for obtaining the sound pressure level corresponding to each running frequency of frequency field; Second determines submodule, for sound pressure level is not defined as to target frequency higher than default noise threshold and the running frequency that is not less than default minimum noise.
Further, control module comprises: the 3rd acquisition module, for obtaining operation request, wherein, carries the frequency of request operation in operation request; The second determination module, for determining the frequency field corresponding to frequency of request operation; The 4th acquisition module, for obtaining the target frequency of frequency field; Control module, operates in target frequency for controlling convertible frequency air-conditioner.
To achieve these goals, according to a further aspect in the invention, provide a kind of control system of convertible frequency air-conditioner, this control system comprises: sound level meter, is connected with compressor, for obtaining the running frequency of convertible frequency air-conditioner and the noise signal corresponding with running frequency; Controller, be connected between sound level meter and compressor, for the frequency noise distribution curve based on running frequency and noise signal generation convertible frequency air-conditioner, and determine one or more target frequencies of convertible frequency air-conditioner according to distribution curve, wherein, the value of the noise signal that target frequency is corresponding, not higher than default noise threshold, is then controlled compressor operating and is being asked on corresponding target frequency with the operation of convertible frequency air-conditioner.
Further, control system also comprises: A/D converter, is connected between sound level meter and controller, for noise signal is converted to data signal; Controller also comprises sub-processor, is connected with A/D converter, for calculating the sound pressure level of the indicated acoustic pressure of data signal and reference sound pressure, and draws the frequency noise distribution curve of running frequency and sound pressure level.
Further, sound level meter is arranged in the sheet metal component chamber of off-premises station of convertible frequency air-conditioner.
Pass through the embodiment of the present invention, determine one or more target frequencies of convertible frequency air-conditioner by predetermined frequency noise distribution curve, then in the time receiving new operation request, can control convertible frequency air-conditioner operates on corresponding target frequency, because the value of noise signal corresponding to target frequency is not higher than presetting noise threshold, convertible frequency air-conditioner operates in this target frequency, noise when convertible frequency air-conditioner operation is very little, and the noise that can control convertible frequency air-conditioner continues to maintain a lower decibel, the very large problem of noise variation while having solved in prior art frequency-conversion air-conditioning system operation, realize the noise of Sustainable Control convertible frequency air-conditioner, noise is stablized and the lower effect of noise.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the flow chart of the control method of the convertible frequency air-conditioner of the embodiment of the present invention;
Fig. 2 is according to the schematic diagram of the frequency noise curve map of the embodiment of the present invention;
Fig. 3 is according to the flow chart of the control method of a kind of optional convertible frequency air-conditioner of the embodiment of the present invention;
Fig. 4 is according to the schematic diagram of the control device of the convertible frequency air-conditioner of the embodiment of the present invention; And
Fig. 5 is according to the schematic diagram of the control system of the convertible frequency air-conditioner of the embodiment of the present invention.
Detailed description of the invention
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in description of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and needn't be used for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so as embodiments of the invention described herein can with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that process, method, system, product or the equipment that has comprised series of steps or unit is not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
Fig. 1 is according to the flow chart of the control method of the convertible frequency air-conditioner of the embodiment of the present invention.As shown in Figure 1, this control method can realize as follows:
Step S102: obtain the running frequency of convertible frequency air-conditioner and the noise signal corresponding with running frequency.
Step S104: based on the frequency noise distribution curve of running frequency and noise signal generation convertible frequency air-conditioner.
Step S106: determine one or more target frequencies of convertible frequency air-conditioner according to distribution curve, wherein, the value of the noise signal that target frequency is corresponding is not higher than default noise threshold.
Step S108: control convertible frequency air-conditioner operates in the operation of convertible frequency air-conditioner asks on corresponding target frequency.
Pass through the embodiment of the present invention, determine one or more target frequencies of convertible frequency air-conditioner by predetermined frequency noise distribution curve, then in the time receiving new operation request, can control convertible frequency air-conditioner operates on corresponding target frequency, because the value of noise signal corresponding to target frequency is not higher than presetting noise threshold, convertible frequency air-conditioner operates in this target frequency, noise when convertible frequency air-conditioner operation is very little, and the noise that can control convertible frequency air-conditioner continues to maintain a lower decibel, the very large problem of noise variation while having solved in prior art frequency-conversion air-conditioning system operation, realize the noise of Sustainable Control convertible frequency air-conditioner, and the effect that noise is lower.
In the above embodiment of the present invention, the frequency noise distribution curve based on running frequency and noise signal generation convertible frequency air-conditioner can comprise: by A/D converter, noise signal is converted to data signal; Calculate the indicated acoustic pressure of data signal and the sound pressure level of reference sound pressure; Draw the frequency noise distribution curve of running frequency and sound pressure level.
Particularly, sound level meter is converted into the signal of telecommunication after collecting original noise signal, and then noise signal is converted to data signal by A/D converter.Controller, after getting data signal, calculates the SPL of this data signal, and SPL is sound pressure level, is the sound pressure level in above-described embodiment.
Wherein, sound pressure level is that the virtual value that boosts to be measured is got common logarithm with the ratio that reference is boosted, then is multiplied by 20, and its unit is decibel.
Further, after calculating sound pressure level corresponding to each running frequency, the curve of drawing running frequency-sound pressure level obtains frequency noise distribution curve.As shown in Figure 2, transverse axis is running frequency (Hz), and the longitudinal axis is sound pressure level.
In the above embodiment of the present invention, determine that according to distribution curve one or more target frequencies of convertible frequency air-conditioner can comprise: the frequency range of the compressor operating of convertible frequency air-conditioner is divided into N frequency field; Using in each frequency field not higher than the running frequency of default noise threshold as target frequency.
According to the heat pump performance distribution character of above acquisition (being the frequency noise distribution curve in above-described embodiment), the frequency range of compressor operating can be divided into N frequency field, the lower frequency limit in i region is f1, and upper limiting frequency is f2 (as shown in Figure 2).In the time that frequency conversion off-premises station operates in i region, sound pressure level under each running frequency within the scope of test f1 and f2, acoustic pressure total value under each running frequency and acoustic pressure feature are analyzed and contrasted, determine that not running frequency frun higher than default noise threshold (i.e. optimum) is as target frequency.
Pass through above-described embodiment, controller is asked the frequency field of judgement request operation by operation, as the system of judging is in the time of i area operation, just directly stable operation under target frequency frun corresponding to this frequency field, and under other frequency, do not move, realize the lowest noise value operation under this band frequency, avoided the abnormal resonance under other frequencies to occur simultaneously.
Adopt above-described embodiment, can ensure that air-conditioning is in the operation of the minimum running frequency of noise, reduce noise on for impact; Effectively solve because the noise extremely causing of the fluctuation of assembling, installation environment is abnormal.
In an optional embodiment of the present invention, will in each frequency field, can not comprise as target frequency higher than the running frequency of default noise threshold: obtain sound pressure level corresponding to each running frequency in frequency field; Running frequency minimum sound pressure level is defined as to the not target frequency higher than default noise threshold.
In another optional embodiment of the present invention, will in each frequency field, can not comprise as target frequency higher than the running frequency of default noise threshold: obtain sound pressure level corresponding to each running frequency in frequency field; Sound pressure level is not defined as to target frequency higher than default noise threshold and the running frequency that is not less than default minimum noise.
Particularly, because the radiated noise of compressor body and the parts radiated noise frequency of compressor of convertible frequency air-conditioner are the frequency multiplication relation of compressor operating frequency, determine that the default noise conditions of the target frequency in the i of operation area can comprise:
(1) in frequency field i, the running frequency that the sound pressure level of each running frequency between the running frequency f1 of lower limit and the running frequency f2 of the upper limit is minimum is target frequency frun, i.e. the stable operation frequency of this frequency range;
(2) in frequency field i, the sound pressure level of the frequency noise curve under certain running frequency is higher than 35dB (A) and be less than 40dB (A) (meeting default noise range), this running frequency is target frequency frun, can have multiple target frequency frun.If there is not the running frequency that meets default noise range in some frequency fields, determine in this frequency field and do not have target area.As, sound pressure level corresponding to running frequency in frequency field is all higher than 40dB (A), judge in this frequency field and there is no target frequency, in the time carrying out above-mentioned step S108, the frequency that can control the request operation of carrying in this operation request is the target frequency of adjacent frequency field, wherein, this adjacent frequency field is that upper limiting frequency is the frequency field of f1 or the frequency field that lower frequency limit is f2.
Need to further illustrate, control convertible frequency air-conditioner operates in the operation of convertible frequency air-conditioner asks to comprise on corresponding target frequency: obtain operation request, wherein, in operation request, carry the frequency of asking operation; Determine the frequency field corresponding to frequency of request operation; Obtain the target frequency of frequency field; Control convertible frequency air-conditioner and operate in target frequency.
Introduce in detail the embodiment of the present invention below in conjunction with Fig. 3, as shown in Figure 3, the embodiment of the present invention can realize as follows:
Step S301: gather noise signal by sound level meter, and the record running frequency corresponding with this noise signal.
Step S302: the frequency noise curve of drawing convertible frequency air-conditioner.
Step S303: the property parameters that obtains convertible frequency air-conditioner.
Step S304: the property parameters Attributes Frequency curve corresponding with running frequency of drawing convertible frequency air-conditioner.
Step S305: the frequency range that use attribute frequency curve is divided convertible frequency air-conditioner operation obtains N frequency field.
Step S306: determine the target frequency in each frequency field by frequency noise curve.
Step S307: determine the affiliated target frequency region of frequency of carrying request operation in the operation request of obtaining.
Step S308: control convertible frequency air-conditioner operates in the target frequency in target frequency region.
By sound level meter being set on the control panel of controller in the above embodiment of the present invention, obtain the noise-frequency distribution (be frequency noise curve in above-described embodiment) of convertible frequency air-conditioner under current confined state and installation environment, pass judgment on for noise low-limit frequency (being the target frequency of above-described embodiment), effectively solving model machine assembling uniformity and installation environment, to change the noise bringing abnormal; N the running frequency distributing according to heat pump performance divided and the determining of current running frequency region optimized operation frequency, ensures that the minimum running frequency point (being target frequency) of air-conditioning selection noise moves; Can consider performance and NF, ensure changes in temperature and the noise comfortableness of convertible frequency air-conditioner.
It should be noted that, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
Fig. 4 is according to the schematic diagram of the control device of the convertible frequency air-conditioner of the embodiment of the present invention.As shown in Figure 4, this control device can comprise: acquiring unit 10, generation unit 20, determining unit 30 and control module 40.
Wherein, acquiring unit, for obtaining the running frequency of convertible frequency air-conditioner and the noise signal corresponding with running frequency; Generation unit, for the frequency noise distribution curve based on running frequency and noise signal generation convertible frequency air-conditioner; Determining unit, for determine one or more target frequencies of convertible frequency air-conditioner according to distribution curve, wherein, the value of the noise signal that target frequency is corresponding is not higher than default noise threshold; Control module, operates in the operation of convertible frequency air-conditioner and asks corresponding target frequency for controlling convertible frequency air-conditioner.
Pass through the embodiment of the present invention, determine one or more target frequencies of convertible frequency air-conditioner by predetermined frequency noise distribution curve, then in the time receiving new operation request, can control convertible frequency air-conditioner operates on corresponding target frequency, because the value of noise signal corresponding to target frequency is not higher than presetting noise threshold, convertible frequency air-conditioner operates in this target frequency, noise when convertible frequency air-conditioner operation is very little, and the noise that can control convertible frequency air-conditioner continues to maintain a lower decibel, the very large problem of noise variation while having solved in prior art frequency-conversion air-conditioning system operation, realize the noise of Sustainable Control convertible frequency air-conditioner, and the effect that noise is lower.
In the above embodiment of the present invention, generation unit can comprise: modular converter, for noise signal being converted to data signal by A/D converter; The first computing module, for calculating the sound pressure level of the indicated acoustic pressure of data signal and reference sound pressure; Drafting module, for drawing the frequency noise distribution curve of running frequency and sound pressure level.
Particularly, sound level meter is converted into the signal of telecommunication after collecting original noise signal, and then noise signal is converted to data signal by A/D converter.Controller, after getting data signal, calculates the SPL of this data signal, and SPL is sound pressure level, is the sound pressure level in above-described embodiment.
Wherein, sound pressure level is that the virtual value that boosts to be measured is got common logarithm with the ratio that reference is boosted, then is multiplied by 20, and its unit is decibel.
According to the abovementioned embodiments of the present invention, determining unit can comprise: division module, for the frequency range of the compressor operating of convertible frequency air-conditioner being divided into N frequency field; The first determination module, for using each frequency field not higher than the running frequency of default noise threshold as target frequency.
According to the heat pump performance distribution character of above acquisition (being the frequency noise distribution curve in above-described embodiment), the frequency range of compressor operating can be divided into N frequency field, the lower frequency limit in i region is f1, and upper limiting frequency is f2 (as shown in Figure 2).In the time that frequency conversion off-premises station operates in i region, sound pressure level under each running frequency within the scope of test f1 and f2, acoustic pressure total value under each running frequency and acoustic pressure feature are analyzed and contrasted, determine that not running frequency frun higher than default noise threshold (i.e. optimum) is as target frequency.
Pass through above-described embodiment, controller is asked the frequency field of judgement request operation by operation, as the system of judging is in the time of i area operation, just directly stable operation under target frequency frun corresponding to this frequency field, and under other frequency, do not move, realize the lowest noise value operation under this band frequency, avoided the abnormal resonance under other frequencies to occur simultaneously.
In an optional embodiment of the present invention, the first determination module can comprise: the first acquisition module, for obtaining the sound pressure level corresponding to each running frequency of frequency field; First determines submodule, for running frequency minimum sound pressure level being defined as to the not target frequency higher than default noise threshold.
In another optional embodiment of the present invention, the first determination module can comprise: the second acquisition module, for obtaining the sound pressure level corresponding to each running frequency of frequency field; Second determines submodule, for by sound pressure level not higher than default noise threshold and be not less than the target frequency that the running frequency of default minimum noise is defined as.
Particularly, because the radiated noise of compressor body and the parts radiated noise frequency of compressor of convertible frequency air-conditioner are the frequency multiplication relation of compressor operating frequency, determine that the default noise conditions of the target frequency in the i of operation area can comprise:
(1) in frequency field i, the running frequency that the sound pressure level of each running frequency between the running frequency f1 of lower limit and the running frequency f2 of the upper limit is minimum is target frequency frun, i.e. the stable operation frequency of this frequency range;
(2) in frequency field i, the sound pressure level of the frequency noise curve under certain running frequency is higher than 35dB (A) and be less than 40dB (A) (meeting default noise range), this running frequency is target frequency frun, can have multiple target frequency frun.If there is not the running frequency that meets default noise range in some frequency fields, determine in this frequency field and do not have target area.As, sound pressure level corresponding to running frequency in frequency field is all higher than 40dB (A), judge in this frequency field and there is no target frequency, in the time carrying out above-mentioned step S108, the frequency that can control the request operation of carrying in this operation request is the target frequency of adjacent frequency field, wherein, this adjacent frequency field is that upper limiting frequency is the frequency field of f1 or the frequency field that lower frequency limit is f2.
Further, control module comprises: the 3rd acquisition module, for obtaining operation request, wherein, carries the frequency of request operation in operation request; The second determination module, for determining the frequency field corresponding to frequency of request operation; The 4th acquisition module, for obtaining the target frequency of frequency field; Control module, operates in target frequency for controlling convertible frequency air-conditioner.
The modules providing in the present embodiment is identical with the using method that the corresponding step of embodiment of the method provides, application scenarios also can be identical.Certainly, it should be noted that the scheme that above-mentioned module relates to can be not limited to content and the scene in above-described embodiment one, and above-mentioned module may operate in terminal or mobile terminal, can realize by software or hardware.
Fig. 5 is according to the schematic diagram of the control system of the convertible frequency air-conditioner of the embodiment of the present invention.
As shown in Figure 5, this control system can comprise: sound level meter 50 and controller 60.
Wherein, sound level meter 50, is connected with compressor 70, for obtaining the running frequency of convertible frequency air-conditioner and the noise signal corresponding with running frequency.
Controller 60, be connected between sound level meter and compressor, for the frequency noise distribution curve based on running frequency and noise signal generation convertible frequency air-conditioner, and determine one or more target frequencies of convertible frequency air-conditioner according to distribution curve, wherein, the value of the noise signal that target frequency is corresponding, not higher than default noise threshold, is then controlled compressor operating and is being asked on corresponding target frequency with the operation of convertible frequency air-conditioner.
Pass through the embodiment of the present invention, determine one or more target frequencies of convertible frequency air-conditioner by predetermined frequency noise distribution curve, then in the time receiving new operation request, can control convertible frequency air-conditioner operates on corresponding target frequency, because the value of noise signal corresponding to target frequency is not higher than presetting noise threshold, convertible frequency air-conditioner operates in this target frequency, noise when convertible frequency air-conditioner operation is very little, and the noise that can control convertible frequency air-conditioner continues to maintain a lower decibel, the very large problem of noise variation while having solved in prior art frequency-conversion air-conditioning system operation, realize the noise of Sustainable Control convertible frequency air-conditioner, and the effect that noise is lower.
According to the abovementioned embodiments of the present invention, control system can also comprise: A/D converter 80, is connected between sound level meter and controller, for noise signal is converted to data signal; Controller also comprises sub-processor, is connected with A/D converter, for calculating the sound pressure level of the indicated acoustic pressure of data signal and reference sound pressure, and draws the frequency noise distribution curve of running frequency and sound pressure level.
Sound level meter in above-described embodiment can be condenser type sound level meter.
Above-mentioned condenser type sound level meter can be arranged on controller, is all placed in the sheet metal component cavity of off-premises station of convertible frequency air-conditioner with the compressor of noise source.
By above-described embodiment, by the soundproof effect of sheet metal component, can reduce the impact of outside noise on sound level meter, ensure that the noise signal that sound level meter obtains is the most directly feedback of compressor operating noise.
Particularly, after the assembling of the off-premises station of air-conditioning and installing, condenser type sound level meter can be set on the control panel of controller, gather the noise signal of compressor by this sound level meter, and the primary signal collecting is converted to the signal of telecommunication, then by A/D converter (being analog-digital converter), the above-mentioned signal of telecommunication is converted into data signal.
Further, controller is after getting above-mentioned data signal, control chip (being the sub-processor in above-described embodiment) wherein carries out signal analysis, determine sound pressure level and frequency characteristic that different running frequencies are corresponding, and itself and the standard of setting are contrasted, thereby determine that the running frequency distribution that performance and noise all meet the demands (is the generated frequency noise profile curve in above-described embodiment, as shown in Figure 2).
As can be seen from the above description, the present invention has realized following technique effect:
Pass through the embodiment of the present invention, determine one or more target frequencies of convertible frequency air-conditioner by predetermined frequency noise distribution curve, then in the time receiving new operation request, can control convertible frequency air-conditioner operates on corresponding target frequency, because the value of noise signal corresponding to target frequency is not higher than presetting noise threshold, convertible frequency air-conditioner operates in this target frequency, noise when convertible frequency air-conditioner operation is very little, and the noise that can control convertible frequency air-conditioner continues to maintain a lower decibel, the very large problem of noise variation while having solved in prior art frequency-conversion air-conditioning system operation, realize the noise of Sustainable Control convertible frequency air-conditioner, and the effect that noise is lower.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a control method for convertible frequency air-conditioner, is characterized in that, comprising:
Obtain the running frequency of convertible frequency air-conditioner and the noise signal corresponding with described running frequency;
Generate the frequency noise distribution curve of described convertible frequency air-conditioner based on described running frequency and described noise signal;
Determine one or more target frequencies of described convertible frequency air-conditioner according to described distribution curve, wherein, the value of the described noise signal that described target frequency is corresponding is not higher than default noise threshold;
Controlling described convertible frequency air-conditioner operates on the described target frequency corresponding with the operation request of described convertible frequency air-conditioner.
2. control method according to claim 1, is characterized in that, the frequency noise distribution curve that generates described convertible frequency air-conditioner based on described running frequency and described noise signal comprises:
By A/D converter, described noise signal is converted to data signal;
Calculate the sound pressure level of the indicated acoustic pressure of described data signal and reference sound pressure;
Draw the described frequency noise distribution curve of described running frequency and described sound pressure level.
3. control method according to claim 1 and 2, is characterized in that, determines that one or more target frequencies of described convertible frequency air-conditioner comprise according to described distribution curve:
The frequency range of the compressor operating of described convertible frequency air-conditioner is divided into N frequency field;
Using in each described frequency field not higher than the described running frequency of described default noise threshold as described target frequency.
4. control method according to claim 3, is characterized in that, using in each described frequency field not the described running frequency higher than described default noise threshold comprise as described target frequency:
Obtain sound pressure level corresponding to running frequency described in each in described frequency field;
Described running frequency minimum described sound pressure level is defined as to the not described target frequency higher than described default noise threshold.
5. control method according to claim 3, is characterized in that, using in each described frequency field not the described running frequency higher than described default noise threshold comprise as described target frequency:
Obtain sound pressure level corresponding to running frequency described in each in described frequency field;
Described sound pressure level is not defined as to described target frequency higher than described default noise threshold and the described running frequency that is not less than default minimum noise.
6. according to the control method described in claim 4 or 5, it is characterized in that, control described convertible frequency air-conditioner and operate on the described target frequency corresponding with the operation request of described convertible frequency air-conditioner and comprise:
Obtain described operation request, wherein, in described operation request, carry the frequency of request operation;
Determine the described frequency field corresponding to frequency of described request operation;
Obtain the described target frequency of described frequency field;
Control described convertible frequency air-conditioner and operate in described target frequency.
7. a control device for convertible frequency air-conditioner, is characterized in that, comprising:
Acquiring unit, for obtaining the running frequency of convertible frequency air-conditioner and the noise signal corresponding with described running frequency;
Generation unit, for generating the frequency noise distribution curve of described convertible frequency air-conditioner based on described running frequency and described noise signal;
Determining unit, for determine one or more target frequencies of described convertible frequency air-conditioner according to described distribution curve, wherein, the value of the described noise signal that described target frequency is corresponding is not higher than default noise threshold;
Control module, operates in the described target frequency corresponding with the operation request of described convertible frequency air-conditioner for controlling described convertible frequency air-conditioner.
8. control device according to claim 7, is characterized in that, described generation unit comprises:
Modular converter, for being converted to data signal by A/D converter by described noise signal;
The first computing module, for calculating the sound pressure level of the indicated acoustic pressure of described data signal and reference sound pressure;
Drafting module, for drawing the described frequency noise distribution curve of described running frequency and described sound pressure level.
9. according to the control device described in claim 7 or 8, it is characterized in that, determining unit comprises:
Division module, for being divided into the frequency range of the compressor operating of described convertible frequency air-conditioner N frequency field;
The first determination module, for using each described frequency field not higher than the described running frequency of described default noise threshold as described target frequency.
10. control device according to claim 9, is characterized in that, described the first determination module comprises:
The first acquisition module, for obtaining sound pressure level corresponding to running frequency described in each of described frequency field;
First determines submodule, for described running frequency minimum described sound pressure level being defined as to the not described target frequency higher than described default noise threshold.
11. control device according to claim 9, is characterized in that, described the first determination module comprises:
The second acquisition module, for obtaining sound pressure level corresponding to running frequency described in each of described frequency field;
Second determines submodule, for described sound pressure level is not defined as meeting the described target frequency of described default noise conditions higher than described default noise threshold and the described running frequency that is not less than default minimum noise.
12. according to the control device described in claim 10 or 11, it is characterized in that, described control module comprises:
The 3rd acquisition module, for obtaining described operation request, wherein, carries the frequency of request operation in described operation request;
The second determination module, for determining the described frequency field corresponding to frequency of described request operation;
The 4th acquisition module, for obtaining the described target frequency of described frequency field;
Control module, operates in described target frequency for controlling described convertible frequency air-conditioner.
The control system of 13. 1 kinds of convertible frequency air-conditioners, is characterized in that, comprising:
Sound level meter, is connected with compressor, for obtaining the running frequency of convertible frequency air-conditioner and the noise signal corresponding with described running frequency;
Controller, be connected between described sound level meter and described compressor, for generate the frequency noise distribution curve of described convertible frequency air-conditioner based on described running frequency and described noise signal, and determine one or more target frequencies of described convertible frequency air-conditioner according to described distribution curve, wherein, the value of the described noise signal that described target frequency is corresponding, not higher than default noise threshold, is then controlled described compressor operating on the described target frequency corresponding with the operation request of described convertible frequency air-conditioner.
14. control systems according to claim 13, is characterized in that, described control system also comprises:
A/D converter, is connected between described sound level meter and described controller, for described noise signal is converted to data signal;
Described controller also comprises sub-processor, is connected with described A/D converter, for calculating the sound pressure level of the indicated acoustic pressure of described data signal and reference sound pressure, and draws the described frequency noise distribution curve of described running frequency and described sound pressure level.
15. control systems according to claim 13, is characterized in that, described sound level meter is arranged in the sheet metal component chamber of off-premises station of convertible frequency air-conditioner.
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