Method and device for identifying abnormal sound of air conditioner indoor unit
An air-conditioning indoor unit and identification method technology, which is applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve problems such as high maintenance cost and complicated maintenance process, and achieve simplified maintenance process and reduced maintenance cost Effect
Active Publication Date: 2019-08-16
GD MIDEA AIR CONDITIONING EQUIP CO LTD +1
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Problems solved by technology
[0003] The main purpose of the present invention is to propose a method and device for identifying abnormal sound of an air-conditioning indoor unit, aiming at solving the problem of the inability to determine the air-conditioning component that emits the abnormal sound signal based on the abnormal sound signal emitted by the air-conditioning indoor unit in the prior art, resulting in the after-sales maintenance process. Complex, high repair cost issues
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no. 1 example
[0060] refer to figure 2 , figure 2 is the invention figure 1 The schematic flow chart of the detailed steps of step S20 is shown. Based on the above figure 1 In the first embodiment shown, the step S20 specifically includes:
[0061] Step S21, acquiring the peak frequency of the sound signal, and determining a critical frequency band corresponding to the sound signal centering on the peak frequency.
[0062] Wherein, the peak frequency f of the sound signal is retrieved according to the FFT spectrum data 0 , at the peak frequency f 0 Determine the critical frequency band corresponding to the sound signal as the center [f 1 , f 2 ].
[0063] when f 0 total =117.26; the lower limit frequency f corresponding to the critical frequency band 1 for: The lower limit frequency f corresponding to the critical frequency band 2 for:
[0064] when f 0 When >500Hz, the corresponding critical frequency band bandwidth is:
[0065]
[0066] The lower limit frequency f c...
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The invention discloses an air-conditioner indoor machine abnormal sound identification method comprising the following steps: sound signals which are generated during air-conditioner indoor machine operation are obtained, and whether abnormal sound signals exist in the sound signals is detected; if the abnormal sound signals exist in the sound signals, and an air-conditioner part which sends out the abnormal sound signals is determined according to frequency of the abnormal sound signals. The invention also discloses an air-conditioner indoor machine abnormal sound identification device. Via the air-conditioner indoor machine abnormal sound identification method and device disclosed in the invention, the air-conditioner part which sends out the abnormal sound signals can be determined according to frequency of the abnormal sound signals, and after-sales maintenance processes are simplified, and maintenance cost is lowered.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for identifying abnormal sounds of an air conditioner indoor unit. Background technique [0002] At present, people have higher and higher requirements for air conditioners. While satisfying basic functions such as cooling and heating, they all hope to have a quiet and comfortable environment. At present, there is still some obvious room for improvement in the after-sales service of air conditioner noise complaints. Generally, the handling of abnormal sound complaints faces the following two difficulties: First, the description of the user complaint is not specific, and can only be described as loud noise or other onomatopoeic words. After-sales technicians and R&D engineers cannot clarify the noise based on this description. Type, only repeated on-site diagnosis and maintenance, resulting in increased maintenance costs; second, the level of technicia...
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IPC IPC(8): G01H17/00G01M13/00
CPCG01H17/00G01M13/00
Inventor 冯锦平
Owner GD MIDEA AIR CONDITIONING EQUIP CO LTD