CN105527017A - Air-conditioning outdoor unit noise detection method and device - Google Patents
Air-conditioning outdoor unit noise detection method and device Download PDFInfo
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- CN105527017A CN105527017A CN201610049884.9A CN201610049884A CN105527017A CN 105527017 A CN105527017 A CN 105527017A CN 201610049884 A CN201610049884 A CN 201610049884A CN 105527017 A CN105527017 A CN 105527017A
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention discloses an air-conditioning outdoor unit noise detection method, comprising steps of collecting sound signals of an air-conditioning outdoor unit to be detected, performing octave analysis on the voice signal to generate a corresponding relation between frequency of each center to be detected and the noise, determining that the detection result of outdoor set noise of the air conditioner to be detected is qualified when the noise corresponding to the frequency of each center to be detected is smaller or equal to the corresponding preset noise threshold, and determining that the detection result of outdoor set noise of the air conditioner to be detected is not qualified when the noise corresponding to the frequency of at least one center to be detected is greater than the corresponding preset noise threshold. The invention can effectively perform noise detection on the outdoor set of the air conditioner before leaving the factory and enables the outdoor set of the air conditioner which left the factory to meet the requirement of the user.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to air-conditioner outdoor unit noise detecting method and device.
Background technology
At present, the requirement of people to air-conditioning is more and more higher, the air-conditioning not only basic function requirement such as demand fulfillment cooling and warming, the quieter comfortable experience requirements of demand fulfillment.
In prior art, air-conditioner outdoor unit, before dispatching from the factory, generally can not carry out walkaway to it, thus causes the noise of a lot of air-conditioner outdoor units after dispatching from the factory comparatively large, and do not meet the demand of user, user complains more and more to the noise of air-conditioner outdoor unit.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of air-conditioner outdoor unit noise detecting method and device, is intended to realize carrying out walkaway to it before air-conditioner outdoor unit dispatches from the factory, and then makes the noise of the air-conditioner outdoor unit after dispatching from the factory meet user's request.
Air-conditioner outdoor unit noise detecting method provided by the invention comprises the following steps:
Gather voice signal when air-conditioner outdoor unit to be detected runs;
Octave analysis is carried out to described voice signal, generates the corresponding relation of each centre frequency to be detected and noise;
When the noise that centre frequency to be detected is corresponding described in each is all less than or equal to the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is qualified;
When the noise that at least one described centre frequency to be detected is corresponding is greater than the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is defective.
Preferably, describedly carry out octave analysis to described voice signal, after generating the step of the corresponding relation of each centre frequency to be detected and noise, described air-conditioner outdoor unit noise detecting method also comprises:
Determine the default oise insulation factor that centre frequency to be detected described in each is corresponding;
Respectively noise corresponding for centre frequency to be detected described in each is deducted the described default oise insulation factor of its correspondence, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
Preferably, describedly carry out octave analysis to described voice signal, after generating the step of the corresponding relation of each centre frequency to be detected and noise, described air-conditioner outdoor unit noise detecting method also comprises:
Determine the default background noise that centre frequency to be detected described in each is corresponding;
Respectively by described default background noise superposition corresponding with it for noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
Preferably, when carrying out octave analysis, third-octave analysis is carried out to described voice signal.
Preferably, describedly carry out octave analysis to described voice signal, the step generating the corresponding relation of each centre frequency to be detected and noise comprises:
Filtering process is carried out to described voice signal, and generates low frequency sound signals;
Octave analysis is carried out to described low frequency sound signals, generates the corresponding relation of each centre frequency to be detected and noise.
In addition, air-conditioner outdoor unit noise detection apparatus provided by the invention comprises:
Acquisition module, for gathering voice signal when air-conditioner outdoor unit to be detected runs;
Generation module, for carrying out octave analysis to described voice signal, generates the corresponding relation of each centre frequency to be detected and noise;
Determination module, when being all less than or equal to the default noise threshold of its correspondence for the noise that centre frequency to be detected described in each is corresponding, judges that described air-conditioner outdoor unit walkaway result to be detected is qualified;
When described determination module is also greater than the default noise threshold of its correspondence for the noise corresponding at least one described centre frequency to be detected, judge that described air-conditioner outdoor unit walkaway result to be detected is defective.
Preferably, described air-conditioner outdoor unit noise detection apparatus also comprises the first determination module, and described first determination module is for determining the default oise insulation factor that centre frequency to be detected described in each is corresponding;
Described generation module also for respectively noise corresponding for centre frequency to be detected described in each being deducted the described default oise insulation factor of its correspondence, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
Preferably, described air-conditioner outdoor unit noise detection apparatus also comprises the second determination module, and described second determination module is for determining the default background noise that centre frequency to be detected described in each is corresponding;
Described generation module is also for superposing described default background noise corresponding with it for noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each respectively.
Preferably, when carrying out octave analysis, third-octave analysis is carried out to described voice signal.
Preferably, described generation module comprises:
Filter unit, for carrying out filtering process to described voice signal, and generates low frequency sound signals;
Generation unit, for carrying out octave analysis to described low frequency sound signals, generates the corresponding relation of each centre frequency to be detected and noise.
Voice signal when the present invention runs by gathering air-conditioner outdoor unit to be detected, and octave analysis is carried out to described voice signal, generate the corresponding relation of each centre frequency to be detected and noise, when the noise that centre frequency to be detected is corresponding described in each is all less than or equal to the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is qualified, when the noise that at least one described centre frequency to be detected is corresponding is greater than the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is defective, thus effectively before dispatching from the factory, walkaway can be carried out to it to air-conditioner outdoor unit by the method, and then make the noise of the air-conditioner outdoor unit after dispatching from the factory meet user's request.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of air-conditioner outdoor unit noise detecting method first embodiment of the present invention;
Fig. 2 is the refinement schematic flow sheet generating corresponding relation step in air-conditioner outdoor unit noise detecting method of the present invention;
Fig. 3 is the schematic flow sheet of air-conditioner outdoor unit noise detecting method second embodiment of the present invention;
Fig. 4 is the schematic flow sheet of air-conditioner outdoor unit noise detecting method the 3rd embodiment of the present invention;
Fig. 5 is the high-level schematic functional block diagram of air-conditioner outdoor unit noise detection apparatus first embodiment of the present invention;
Fig. 6 is the refinement high-level schematic functional block diagram of generation module in air-conditioner outdoor unit noise detection apparatus of the present invention;
Fig. 7 is the high-level schematic functional block diagram of air-conditioner outdoor unit noise detection apparatus second embodiment of the present invention;
Fig. 8 is the high-level schematic functional block diagram of air-conditioner outdoor unit noise detection apparatus the 3rd embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of air-conditioner outdoor unit noise detecting method, be the schematic flow sheet of air-conditioner outdoor unit noise detecting method first embodiment of the present invention with reference to Fig. 1, Fig. 1, the air-conditioner outdoor unit noise detecting method that the present invention proposes comprises the following steps:
Step S10, gathers voice signal when air-conditioner outdoor unit to be detected runs;
In the present embodiment, dummy head can be adopted in semianechoic room to gather voice signal when air-conditioner outdoor unit to be detected runs, thus guarantee to simulate the hi-fi effect that people ear presence is subject to.During voice signal when gathering air-conditioner outdoor unit to be detected and running, air-conditioner outdoor unit to be detected is placed in semianechoic room, and makes it normal operation.
Step S20, carries out octave analysis to described voice signal, generates the corresponding relation of each centre frequency to be detected and noise;
In the present embodiment, optionally, third-octave analysis can be done to described voice signal.In other embodiments, the octave analysis of 1 octave analysis, 1/6 octave analysis, 1/24 octave analysis or other multiples also can be done to described voice signal.
After carrying out octave analysis, each centre frequency corresponding has a noise figure respectively.In the present embodiment, this noise figure can sound pressure level represent.Such as, the noise figure corresponding at the centre frequency place of 25Hz is 54dB, and the noise figure corresponding at the centre frequency place of 40Hz is 52dB, and the noise figure corresponding at the centre frequency place of 63Hz is 36dB etc.
Optionally, be the refinement schematic flow sheet generating corresponding relation step in air-conditioner outdoor unit noise detecting method of the present invention with reference to Fig. 2, Fig. 2, step S20 comprises:
Step S21, carries out filtering process to described voice signal, and generates low frequency sound signals;
Step S22, carries out octave analysis to described low frequency sound signals, generates the corresponding relation of each centre frequency to be detected and noise.
Due to current user for air-conditioner outdoor unit noise complain mainly concentrate on low-frequency noise, therefore, optionally, when carrying out octave analysis, octave analysis is carried out to the low frequency part of described voice signal.Such as, octave analysis can be carried out to the low frequency part of below 315Hz in voice signal, also can carry out octave analysis to the low frequency part of below 200Hz in voice signal.
Step S30, judges whether noise that described in each, centre frequency to be detected is corresponding is all less than or equal to the default noise threshold of its correspondence;
When the noise that centre frequency to be detected is corresponding described in each is all less than or equal to the default noise threshold of its correspondence, then perform step S40; When the noise that at least one described centre frequency to be detected is corresponding is greater than the default noise threshold of its correspondence, then perform step S50.
Step S40, judges that described air-conditioner outdoor unit walkaway result to be detected is qualified;
Step S50, judges that described air-conditioner outdoor unit walkaway result to be detected is defective.
In the present embodiment, can determine according to existing criteria for noise the default noise threshold that centre frequency to be detected described in each is corresponding.Optionally, can determine according to existing room noise standard the default noise threshold that centre frequency to be detected described in each is corresponding.Also according to each centre frequency preset and the corresponding relation of default noise threshold, the default noise threshold that centre frequency to be detected described in each is corresponding can be determined.Such as, default noise threshold corresponding to centre frequency 25Hz preset can be default noise threshold that 60dB, default centre frequency 40Hz are corresponding can be the default noise threshold that 55dB, default centre frequency 63Hz are corresponding can be 50dB etc.The corresponding relation of above-mentioned each default centre frequency and default noise threshold can experimentally obtain, or automatically calculates generation by the impression of computer simulation human auditory system.
In the present embodiment, for 25Hz centre frequency, the noise figure of its correspondence is 54dB, and the default noise threshold of its correspondence is 60dB, therefore, can judge whether noise corresponding to 25Hz centre frequency is all less than or equal to the default noise threshold of its correspondence.In like manner, can judge whether other each centre frequencies meet the demands, and do not repeat them here successively.
Voice signal when the present invention runs by gathering air-conditioner outdoor unit to be detected, and octave analysis is carried out to described voice signal, generate the corresponding relation of each centre frequency to be detected and noise, when the noise that centre frequency to be detected is corresponding described in each is all less than or equal to the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is qualified, when the noise that at least one described centre frequency to be detected is corresponding is greater than the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is defective, thus effectively before dispatching from the factory, walkaway can be carried out to it to air-conditioner outdoor unit by the method, and then make the noise of the air-conditioner outdoor unit after dispatching from the factory meet user's request.
Further, in order to improve the accuracy of air-conditioner outdoor unit walkaway, based on the first embodiment of air-conditioner outdoor unit noise detecting method of the present invention, the invention allows for the second embodiment of air-conditioner outdoor unit noise detecting method, with reference to Fig. 3, Fig. 3 is the schematic flow sheet of air-conditioner outdoor unit noise detecting method second embodiment of the present invention, and after step S20, described air-conditioner outdoor unit noise detecting method also comprises:
Step S60, determines the default oise insulation factor that centre frequency to be detected described in each is corresponding;
In the present embodiment, because air-conditioner outdoor unit is generally installed on outdoor, and user is generally positioned at indoor, and the noise of air-conditioner outdoor unit can have certain decay after building structure.Therefore, walkaway is carried out again after needing to decay to the voice signal of air-conditioner outdoor unit to be detected gathered.
Oise insulation factor is used for representing the physical quantity built the isolation capacity of air-borne sound.Default oise insulation factor can be arranged according to actual needs, such as, can arrange according to the building construction feature of the sales region of air-conditioner outdoor unit.In the present embodiment, in order to improve the accuracy of air-conditioner outdoor unit walkaway, oise insulation factor can be determined according to the glass that 5mm is thick.
Can by following formulae discovery oise insulation factor R:R=16*lgm+14lgf-29.Wherein, m is the weight of unit area building structure, and f is Frequency point to be detected.
Step S70, deducts the described default oise insulation factor of its correspondence respectively by noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
In the present embodiment, such as, the noise figure that the centre frequency place of 25Hz is corresponding is 54dB, and the noise figure corresponding at the centre frequency place of 40Hz is 52dB, and the noise figure corresponding at the centre frequency place of 63Hz is 36dB etc.; Through the decay of building structure oise insulation factor, regenerate each described in the corresponding relation of centre frequency to be detected and noise, such as, each centre frequency to be detected regenerated with the corresponding relation of noise can be: the noise figure that the centre frequency place of 25Hz is corresponding is 26dB, the noise figure corresponding at the centre frequency place of 40Hz is 38dB, and the noise figure corresponding at the centre frequency place of 63Hz is 19dB etc.
Optionally, step S70 performed before step S30.Therefore, in follow-up step S30, noise figure corresponding to each centre frequency to be detected be all be all through oise insulation factor decay upgrade after noise figure, such as, directly judge noise figure 26dB corresponding to the centre frequency place of 25Hz, whether the noise figure 38dB corresponding at the centre frequency place of 40Hz and the noise figure 19dB corresponding at the centre frequency place of 63Hz etc. are all less than or equal to default noise threshold corresponding to each centre frequency.
The oise insulation factor in house, when carrying out walkaway, considers into by the present embodiment simultaneously, therefore more accurate to the result of air-conditioner outdoor unit walkaway.
Further, in order to improve the accuracy of air-conditioner outdoor unit walkaway further, based on the first or second embodiment of air-conditioner outdoor unit noise detecting method of the present invention, the invention allows for the 3rd embodiment of air-conditioner outdoor unit noise detecting method, with reference to Fig. 4, Fig. 4 is the schematic flow sheet of air-conditioner outdoor unit noise detecting method the 3rd embodiment of the present invention, and after step S20, described air-conditioner outdoor unit noise detecting method also comprises:
Step S80, determines the default background noise that centre frequency to be detected described in each is corresponding;
Background noise, also claims ground unrest.In the present embodiment, default background noise can be determined according to the feature of the sales region of air-conditioner outdoor unit or applied environment.Default background noise can rule of thumb be determined.
Optionally, described default background noise is for presetting chamber background noise.
Step S90, respectively by described default background noise superposition corresponding with it for noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
In the present embodiment, default background noise also can be power level.Before noise corresponding for centre frequency to be detected described in each is superposed with corresponding default background noise, first noise corresponding for centre frequency to be detected described in each can be converted to power level by sound pressure level, and then the noise after conversion is superposed with corresponding default background noise, finally the noise after superposition is converted to sound pressure level again.
Based on above-mentioned second embodiment, each centre frequency to be detected through the decay of house oise insulation factor with the corresponding relation of noise is: the noise figure that the centre frequency place of 25Hz is corresponding is 26dB, the noise figure corresponding at the centre frequency place of 40Hz is 38dB, and the noise figure corresponding at the centre frequency place of 63Hz is 19dB etc.Through presetting the superposition of background noise, regenerate each described in the corresponding relation of centre frequency to be detected and noise, such as, each centre frequency to be detected regenerated and the corresponding relation of noise can be: therefore, described in each of the default background noise superposition of process, centre frequency to be detected with the corresponding relation of noise is: the noise figure that the centre frequency place of 25Hz is corresponding is 40dB, the noise figure corresponding at the centre frequency place of 40Hz is 42dB, and the noise figure corresponding at the centre frequency place of 63Hz is 35dB etc.
Optionally, step S90 performed before step S30.Therefore, in follow-up step S30, noise figure corresponding to each centre frequency to be detected be all through the superposition of default background noise upgrade after noise figure, or noise figure corresponding to each centre frequency to be detected be all through oise insulation factor decay and preset background noise superposition upgrade after noise figure, such as, the noise figure that the centre frequency place of direct judgement 25Hz is corresponding is 40dB, the noise figure corresponding at the centre frequency place of 40Hz is 42dB, the noise figure corresponding at the centre frequency place of 63Hz is whether 35dB etc. is all less than or equal to default noise threshold corresponding to each centre frequency.
Background noise, when carrying out walkaway, considers into by the present embodiment simultaneously further, therefore more accurate to the result of air-conditioner outdoor unit walkaway.
The present invention further provides a kind of air-conditioner outdoor unit noise detection apparatus.
With reference to the high-level schematic functional block diagram that Fig. 5, Fig. 5 are air-conditioner outdoor unit noise detection apparatus first embodiment of the present invention, air-conditioner outdoor unit noise detection apparatus provided by the invention comprises:
Acquisition module 10, for gathering voice signal when air-conditioner outdoor unit to be detected runs;
In the present embodiment, dummy head can be adopted in semianechoic room to gather voice signal when air-conditioner outdoor unit to be detected runs, thus guarantee to simulate the hi-fi effect that people ear presence is subject to.During voice signal when gathering air-conditioner outdoor unit to be detected and running, air-conditioner outdoor unit to be detected is placed in semianechoic room, and makes it normal operation.
Generation module 20, for carrying out octave analysis to described voice signal, generates the corresponding relation of each centre frequency to be detected and noise;
In the present embodiment, optionally, third-octave analysis can be done to described voice signal.In other embodiments, the octave analysis of 1 octave analysis, 1/6 octave analysis, 1/24 octave analysis or other multiples also can be done to described voice signal.
After carrying out octave analysis, each centre frequency corresponding has a noise figure respectively.In the present embodiment, this noise figure can sound pressure level represent.Such as, the noise figure corresponding at the centre frequency place of 25Hz is 54dB, and the noise figure corresponding at the centre frequency place of 40Hz is 52dB, and the noise figure corresponding at the centre frequency place of 63Hz is 36dB etc.
Optionally, be the refinement high-level schematic functional block diagram of generation module in air-conditioner outdoor unit noise detection apparatus of the present invention with reference to Fig. 6, Fig. 6, generation module 20 comprises:
Filter unit 21, for carrying out filtering process to described voice signal, and generates low frequency sound signals;
Generation unit 22, for carrying out octave analysis to described low frequency sound signals, generates the corresponding relation of each centre frequency to be detected and noise.
Due to current user for air-conditioner outdoor unit noise complain mainly concentrate on low-frequency noise, therefore, optionally, described generation module 20, when carrying out octave analysis, carries out octave analysis to the low frequency part of described voice signal.Such as, octave analysis can be carried out to the low frequency part of below 315Hz in voice signal, also can carry out octave analysis to the low frequency part of below 200Hz in voice signal.
Determination module 30, when being all less than or equal to the default noise threshold of its correspondence for the noise that centre frequency to be detected described in each is corresponding, judges that described air-conditioner outdoor unit walkaway result to be detected is qualified;
When described determination module 30 is also greater than the default noise threshold of its correspondence for the noise corresponding at least one described centre frequency to be detected, judge that described air-conditioner outdoor unit walkaway result to be detected is defective.
In the present embodiment, can determine according to existing criteria for noise the default noise threshold that centre frequency to be detected described in each is corresponding.Optionally, can determine according to existing room noise standard the default noise threshold that centre frequency to be detected described in each is corresponding.Also according to each centre frequency preset and the corresponding relation of default noise threshold, the default noise threshold that centre frequency to be detected described in each is corresponding can be determined.Such as, default noise threshold corresponding to centre frequency 25Hz preset can be default noise threshold that 60dB, default centre frequency 40Hz are corresponding can be the default noise threshold that 55dB, default centre frequency 63Hz are corresponding can be 50dB etc.The corresponding relation of above-mentioned each default centre frequency and default noise threshold can experimentally obtain, or automatically calculates generation by the impression of computer simulation human auditory system.
In the present embodiment, for 25Hz centre frequency, the noise figure of its correspondence is 54dB, and the default noise threshold of its correspondence is 60dB, therefore, can judge whether noise corresponding to 25Hz centre frequency is all less than or equal to the default noise threshold of its correspondence.In like manner, can judge whether other each centre frequencies meet the demands, and do not repeat them here successively.
Voice signal when the present invention runs by gathering air-conditioner outdoor unit to be detected, and octave analysis is carried out to described voice signal, generate the corresponding relation of each centre frequency to be detected and noise, then the default noise threshold that centre frequency to be detected described in each is corresponding is determined, and the noise that centre frequency to be detected is corresponding described in each is when being all less than or equal to the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is qualified, when the noise that at least one described centre frequency to be detected is corresponding is greater than the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is defective, thus effectively before dispatching from the factory, walkaway can be carried out to it to air-conditioner outdoor unit by the method, and then make the noise of the air-conditioner outdoor unit after dispatching from the factory meet user's request.
Further, in order to improve the accuracy of air-conditioner outdoor unit walkaway, based on the first embodiment of air-conditioner outdoor unit noise detection apparatus of the present invention, the invention allows for the second embodiment of air-conditioner outdoor unit noise detection apparatus, with reference to Fig. 7, Fig. 7 is the high-level schematic functional block diagram of air-conditioner outdoor unit noise detection apparatus second embodiment of the present invention, described air-conditioner outdoor unit noise detection apparatus also comprises the first determination module 40, and described first determination module 40 is for determining the default oise insulation factor that centre frequency to be detected described in each is corresponding;
In the present embodiment, because air-conditioner outdoor unit is generally installed on outdoor, and user is generally positioned at indoor, and the noise of air-conditioner outdoor unit can have certain decay after building structure.Therefore, walkaway is carried out again after needing to decay to the voice signal of air-conditioner outdoor unit to be detected gathered.
Oise insulation factor is used for representing the physical quantity built the isolation capacity of air-borne sound.Default oise insulation factor can be arranged according to actual needs, such as, can arrange according to the building construction feature of the sales region of air-conditioner outdoor unit.In the present embodiment, in order to improve the accuracy of air-conditioner outdoor unit walkaway, oise insulation factor can be determined according to the glass that 5mm is thick.
Can by following formulae discovery oise insulation factor R:R=16*lgm+14lgf-29.Wherein, m is the weight of unit area building structure, and f is Frequency point to be detected.
Described generation module 20 also for respectively noise corresponding for centre frequency to be detected described in each being deducted the described default oise insulation factor of its correspondence, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
In the present embodiment, such as, the noise figure that the centre frequency place of 25Hz is corresponding is 54dB, and the noise figure corresponding at the centre frequency place of 40Hz is 52dB, and the noise figure corresponding at the centre frequency place of 63Hz is 36dB etc.; Through the decay of building structure oise insulation factor, regenerate each described in the corresponding relation of centre frequency to be detected and noise, such as, each centre frequency to be detected regenerated with the corresponding relation of noise can be: the noise figure that the centre frequency place of 25Hz is corresponding is 26dB, the noise figure corresponding at the centre frequency place of 40Hz is 38dB, and the noise figure corresponding at the centre frequency place of 63Hz is 19dB etc.
Therefore, in the process that determination module 30 judges, noise figure corresponding to each centre frequency to be detected be all be all through oise insulation factor decay upgrade after noise figure, such as, directly judge noise figure 26dB corresponding to the centre frequency place of 25Hz, whether the noise figure 38dB corresponding at the centre frequency place of 40Hz and the noise figure 19dB corresponding at the centre frequency place of 63Hz etc. are all less than or equal to default noise threshold corresponding to each centre frequency.
The oise insulation factor in house, when carrying out walkaway, considers into by the present embodiment simultaneously, therefore more accurate to the result of air-conditioner outdoor unit walkaway.
Further, in order to improve the accuracy of air-conditioner outdoor unit walkaway, based on the first or second embodiment of air-conditioner outdoor unit noise detection apparatus of the present invention, the invention allows for the 3rd embodiment of air-conditioner outdoor unit noise detection apparatus, with reference to Fig. 8, Fig. 8 is the high-level schematic functional block diagram of air-conditioner outdoor unit noise detection apparatus the 3rd embodiment of the present invention, described air-conditioner outdoor unit noise detection apparatus also comprises the second determination module 50, and described second determination module 50 is for determining the default background noise that centre frequency to be detected described in each is corresponding;
Background noise, also claims ground unrest.In the present embodiment, default background noise can be determined according to the feature of the sales region of air-conditioner outdoor unit or applied environment.Default background noise can rule of thumb be determined.
Optionally, described default background noise is for presetting chamber background noise.
Described generation module 20 is also for superposing described default background noise corresponding with it for noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each respectively.
In the present embodiment, default background noise also can be power level.Before noise corresponding for centre frequency to be detected described in each is superposed with corresponding default background noise, first noise corresponding for centre frequency to be detected described in each can be converted to power level by sound pressure level, and then the noise after conversion is superposed with corresponding default background noise, finally the noise after superposition is converted to sound pressure level again.
Based on above-mentioned second embodiment, each centre frequency to be detected through the decay of house oise insulation factor with the corresponding relation of noise is: the noise figure that the centre frequency place of 25Hz is corresponding is 26dB, the noise figure corresponding at the centre frequency place of 40Hz is 38dB, and the noise figure corresponding at the centre frequency place of 63Hz is 19dB etc.Through presetting the superposition of background noise, regenerate each described in the corresponding relation of centre frequency to be detected and noise, such as, each centre frequency to be detected regenerated and the corresponding relation of noise can be: therefore, described in each of the default background noise superposition of process, centre frequency to be detected with the corresponding relation of noise is: the noise figure that the centre frequency place of 25Hz is corresponding is 40dB, the noise figure corresponding at the centre frequency place of 40Hz is 42dB, and the noise figure corresponding at the centre frequency place of 63Hz is 35dB etc.
Optionally, in the process that determination module 30 judges, noise figure corresponding to each centre frequency to be detected be all through the superposition of default background noise upgrade after noise figure, or noise figure corresponding to each centre frequency to be detected be all through oise insulation factor decay and preset background noise superposition upgrade after noise figure, such as, the noise figure that the centre frequency place of direct judgement 25Hz is corresponding is 40dB, the noise figure corresponding at the centre frequency place of 40Hz is 42dB, the noise figure corresponding at the centre frequency place of 63Hz is whether 35dB etc. is all less than or equal to default noise threshold corresponding to each centre frequency.
Background noise, when carrying out walkaway, considers into by the present embodiment simultaneously further, therefore more accurate to the result of air-conditioner outdoor unit walkaway.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computing machine, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
In addition, in invention, relate to the description of " first ", " second " etc. only for describing object, and instruction can not be interpreted as or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time people should think that the combination of this technical scheme does not exist, also not within the protection domain of application claims.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an air-conditioner outdoor unit noise detecting method, is characterized in that, described air-conditioner outdoor unit noise detecting method comprises the following steps:
Gather voice signal when air-conditioner outdoor unit to be detected runs;
Octave analysis is carried out to described voice signal, generates the corresponding relation of each centre frequency to be detected and noise;
When the noise that centre frequency to be detected is corresponding described in each is all less than or equal to the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is qualified;
When the noise that at least one described centre frequency to be detected is corresponding is greater than the default noise threshold of its correspondence, judge that described air-conditioner outdoor unit walkaway result to be detected is defective.
2. air-conditioner outdoor unit noise detecting method as claimed in claim 1, it is characterized in that, describedly carry out octave analysis to described voice signal, after generating the step of the corresponding relation of each centre frequency to be detected and noise, described air-conditioner outdoor unit noise detecting method also comprises:
Determine the default oise insulation factor that centre frequency to be detected described in each is corresponding;
Respectively noise corresponding for centre frequency to be detected described in each is deducted the described default oise insulation factor of its correspondence, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
3. air-conditioner outdoor unit noise detecting method as claimed in claim 1 or 2, it is characterized in that, describedly carry out octave analysis to described voice signal, after generating the step of the corresponding relation of each centre frequency to be detected and noise, described air-conditioner outdoor unit noise detecting method also comprises:
Determine the default background noise that centre frequency to be detected described in each is corresponding;
Respectively by described default background noise superposition corresponding with it for noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
4. air-conditioner outdoor unit noise detecting method as claimed in claim 3, is characterized in that, when carrying out octave analysis, carrying out third-octave analysis to described voice signal.
5. air-conditioner outdoor unit noise detecting method as claimed in claim 3, is characterized in that, describedly carries out octave analysis to described voice signal, and the step generating the corresponding relation of each centre frequency to be detected and noise comprises:
Filtering process is carried out to described voice signal, and generates low frequency sound signals;
Octave analysis is carried out to described low frequency sound signals, generates the corresponding relation of each centre frequency to be detected and noise.
6. an air-conditioner outdoor unit noise detection apparatus, is characterized in that, described air-conditioner outdoor unit noise detection apparatus comprises:
Acquisition module, for gathering voice signal when air-conditioner outdoor unit to be detected runs;
Generation module, for carrying out octave analysis to described voice signal, generates the corresponding relation of each centre frequency to be detected and noise;
Determination module, when being all less than or equal to the default noise threshold of its correspondence for the noise that centre frequency to be detected described in each is corresponding, judges that described air-conditioner outdoor unit walkaway result to be detected is qualified;
When described determination module is also greater than the default noise threshold of its correspondence for the noise corresponding at least one described centre frequency to be detected, judge that described air-conditioner outdoor unit walkaway result to be detected is defective.
7. air-conditioner outdoor unit noise detection apparatus as claimed in claim 6, it is characterized in that, described air-conditioner outdoor unit noise detection apparatus also comprises the first determination module, and described first determination module is for determining the default oise insulation factor that centre frequency to be detected described in each is corresponding;
Described generation module also for respectively noise corresponding for centre frequency to be detected described in each being deducted the described default oise insulation factor of its correspondence, to regenerate the corresponding relation of centre frequency to be detected and noise described in each.
8. air-conditioner outdoor unit noise detection apparatus as claimed in claims 6 or 7, it is characterized in that, described air-conditioner outdoor unit noise detection apparatus also comprises the second determination module, and described second determination module is for determining the default background noise that centre frequency to be detected described in each is corresponding;
Described generation module is also for superposing described default background noise corresponding with it for noise corresponding for centre frequency to be detected described in each, to regenerate the corresponding relation of centre frequency to be detected and noise described in each respectively.
9. air-conditioner outdoor unit noise detection apparatus as claimed in claim 8, is characterized in that, when carrying out octave analysis, carrying out third-octave analysis to described voice signal.
10. air-conditioner outdoor unit noise detection apparatus as claimed in claim 8, it is characterized in that, described generation module comprises:
Filter unit, for carrying out filtering process to described voice signal, and generates low frequency sound signals;
Generation unit, for carrying out octave analysis to described low frequency sound signals, generates the corresponding relation of each centre frequency to be detected and noise.
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