CN112924206A - Fault detection method, device, equipment and storage medium - Google Patents

Fault detection method, device, equipment and storage medium Download PDF

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CN112924206A
CN112924206A CN202110121159.9A CN202110121159A CN112924206A CN 112924206 A CN112924206 A CN 112924206A CN 202110121159 A CN202110121159 A CN 202110121159A CN 112924206 A CN112924206 A CN 112924206A
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sound pressure
pressure level
noise
generating
information
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CN112924206B (en
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赵帅
黎志鹏
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups

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Abstract

The embodiment of the application discloses a fault detection method, which comprises the following steps: acquiring first noise information generated when an outdoor unit operates; generating prompt information for indicating the relation between the vibration damping device and the refrigerant pipeline based on the first noise information; the vibration reduction device is used for wrapping and fixing a refrigerant pipeline in an outdoor unit refrigerant pipeline system so as to reduce vibration noise of the refrigerant pipeline when the outdoor unit operates; and displaying the prompt information. The embodiment of the application also discloses a fault detection device, equipment and a storage medium.

Description

Fault detection method, device, equipment and storage medium
Technical Field
The present application relates to the field of air conditioning technologies, and in particular, to a fault detection method, device, equipment, and storage medium.
Background
At present, the popularity of the outdoor unit of the air conditioner is higher and higher. Since the outdoor unit is usually installed outdoors, the operating frequency range of the outdoor unit is wide, and thus, the pipelines in the refrigerant pipeline system may resonate during the operation of the outdoor unit. Due to the existence of the resonance phenomenon, under the condition of long-term operation of the outdoor unit of the air conditioner, the pipeline in the refrigerant pipeline system is easy to break. In order to solve the problem that the pipeline in the refrigerant pipeline system is cracked due to resonance, the pipeline in the refrigerant pipeline system is wrapped by the vibration damping device with the novel damping foaming material at present, so that the vibration of the pipeline system in the refrigerant pipeline system is reduced, the risk of pipeline fracture is greatly reduced, and the reliability and the service life of the air conditioning equipment are improved.
However, since the service life of the air conditioning equipment is long, the novel damping foam material is easy to age in an outdoor environment, and the novel damping foam material may fall off from a pipeline in a refrigerant pipeline system under the conditions of a wide operating frequency range of an outdoor unit of the air conditioner and the like. At present, an effective and reliable method is not available for detecting the condition that the novel damping foam material is likely to fall off from a pipeline in a refrigerant pipeline system, so that the risk of breakage of the pipeline in the refrigerant pipeline system still exists.
Content of application
In order to solve the above technical problems, embodiments of the present application are expected to provide a fault detection method, device, equipment, and storage medium, which solve the problem that the situation that a novel damping foam material may drop from a pipeline in a refrigerant pipeline system cannot be detected at present, provide a technical scheme for detecting whether the novel damping foam material drops from the pipeline in the refrigerant pipeline system, and reduce the risk of breakage of the pipeline in the refrigerant pipeline system.
The technical scheme of the application is realized as follows:
in a first aspect, a method of fault detection, the method comprising:
acquiring first noise information generated when an outdoor unit operates;
generating prompt information for indicating the relation between the vibration damping device and the refrigerant pipeline based on the first noise information; the vibration reduction device is used for wrapping and fixing a refrigerant pipeline in an outdoor unit refrigerant pipeline system so as to reduce vibration noise of the refrigerant pipeline when the outdoor unit operates;
and displaying the prompt information.
In a second aspect, a fault detection apparatus, the apparatus comprising: the device comprises an acquisition unit, a generation unit and a display unit; wherein:
the acquisition unit is used for acquiring first noise information generated when the outdoor unit operates;
the generating unit is used for generating prompt information used for indicating the relation between the vibration damping device and the refrigerant pipeline based on the first noise information;
and the display unit is used for displaying the prompt information.
In a third aspect, a fault detection device includes: the device comprises a processor, a memory, a noise detection device, a display device and a communication bus; wherein:
the noise detection device is used for collecting first noise information generated when the outdoor unit operates and sending the first noise information to the processor;
the memory to store executable instructions;
the communication bus is used for realizing communication connection between the processor and the memory;
the processor is configured to execute a fault detection program stored in the memory based on the first noise information, so as to implement the steps of the fault detection method according to any one of the above embodiments;
the display device is configured to display a prompt message obtained when the processor implements the fault detection method according to any one of the above descriptions.
In a fourth aspect, an air conditioning apparatus comprises an indoor unit, an outdoor unit, and a fault detection device as described in any of the above.
In a fifth aspect, a storage medium has stored thereon a fault detection program which, when executed by a processor, implements the steps of the fault detection method as defined in any one of the above.
In the embodiment of the application, after the first noise information generated when the outdoor unit operates is acquired, the prompt information for indicating the relationship between the vibration damping device and the refrigerant pipeline is generated based on the first noise information, and the prompt information is displayed. Therefore, the relation between the vibration damper and the refrigerant pipeline is determined by analyzing the first noise information generated when the outdoor unit operates, and the prompt information is adopted for displaying, so that the problem that the situation that the novel damping foam material possibly falls off from the pipeline in the refrigerant pipeline system cannot be detected at present is solved, the technical scheme for detecting whether the novel damping foam material falls off from the pipeline in the refrigerant pipeline system is provided, and the risk of breakage of the pipeline in the refrigerant pipeline system is reduced.
Drawings
Fig. 1 is a schematic flowchart of a fault detection method according to an embodiment of the present application;
fig. 2 is a schematic flowchart of another fault detection method provided in the embodiment of the present application;
fig. 3 is a schematic flowchart of another fault detection method provided in the embodiment of the present application;
fig. 4 is a schematic layout of a noise detection device according to an embodiment of the present disclosure;
fig. 5 is a schematic layout view of another noise detection apparatus according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a fault detection apparatus according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a fault detection device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
An embodiment of the present application provides a fault detection method, which is applied to a fault detection device and shown in fig. 1, and includes the following steps:
step 101, acquiring first noise information generated when an outdoor unit operates.
In other embodiments of the present application, the fault detection device may be a central control terminal in an intelligent home system, an intelligent device such as a desktop computer and an intelligent mobile terminal of a user, or an air conditioner control system set in an air conditioner. The first noise information generated when the outdoor unit operates may be obtained by processing a noise signal after the noise signal is collected by the noise sensor.
And 102, generating prompt information for indicating the relation between the vibration damping device and the refrigerant pipeline based on the first noise information.
The vibration damper is used for wrapping and fixing the refrigerant pipeline in the refrigerant pipeline system of the outdoor unit so as to reduce vibration noise of the refrigerant pipeline when the outdoor unit operates.
In the embodiment of the application, after the vibration damping device falls off from the refrigerant pipeline, when the outdoor unit operates, the refrigerant pipeline has no vibration damping effect of the vibration damping device, so that the refrigerant pipeline can have resonance, and the noise generated by the outdoor unit becomes large when the outdoor unit operates, therefore, whether the vibration damping device falls off from the refrigerant pipeline or not can be determined by detecting the change of the noise information of the outdoor unit, so that corresponding prompt information can be generated, and a user can be informed of the relationship between the vibration damping device and the refrigerant pipeline. The vibration damping device may be a polyurethane damping foam.
And step 103, displaying prompt information.
In this embodiment of the application, the fault detection device may control the prompt information to be displayed in a display device corresponding to the user or the after-sales service staff, where the display device corresponding to the user may be an intelligent mobile device of the user, or the like, or may be displayed in a display area of the fault detection device itself. Therefore, when the prompt message prompts that the vibration damper falls off from the refrigerant pipeline, a user can find a merchant to maintain after sale in time, and the risk of breakage of the refrigerant pipeline of the outdoor unit is reduced. Or prompt information can be displayed at the side of the merchant's after-sale end, so that when the prompt information prompts that the vibration damper falls off from the refrigerant pipeline, the merchant can directly provide after-sale service for the user to perform corresponding maintenance, the risk of breakage of the refrigerant pipeline of the outdoor unit is reduced, and the use experience of the user is improved.
In the embodiment of the application, after the first noise information generated when the outdoor unit operates is acquired, the prompt information for indicating the relationship between the vibration damping device and the refrigerant pipeline is generated based on the first noise information, and the prompt information is displayed. Therefore, the relation between the vibration damper and the refrigerant pipeline is determined by analyzing the first noise information generated when the outdoor unit operates, and the prompt information is adopted for displaying, so that the problem that the situation that the novel damping foam material possibly falls off from the pipeline in the refrigerant pipeline system cannot be detected at present is solved, the technical scheme for detecting whether the novel damping foam material falls off from the pipeline in the refrigerant pipeline system is provided, and the risk of breakage of the pipeline in the refrigerant pipeline system is reduced.
Based on the foregoing embodiments, an embodiment of the present application provides a fault detection method, which is applied to a fault detection device and shown in fig. 2, and includes the following steps:
step 201, acquiring first noise information generated when the outdoor unit operates.
In the embodiment of the application, a noise detection device arranged in the outdoor unit is used for collecting a noise signal generated when the outdoor unit operates, and performing spectrum analysis on the collected noise signal to obtain first noise information. Or when the noise detection device collects a noise signal generated when the outdoor unit operates, the noise detection device performs spectrum analysis on the noise signal to obtain first noise information.
Step 202, obtaining a first detected sound pressure level of n center frequencies corresponding to the target octave from the first noise information.
Wherein n is an integer greater than or equal to 1.
In the embodiment of the present application, the target octave may be 1 octave, or may be one-third octave, etc.
Step 203, generating a prompt message based on the first detected sound pressure levels of the n center frequencies and the preset sound pressure level thresholds of the n center frequencies.
In the embodiment of the present application, the preset sound pressure level thresholds of the n center frequencies are empirical values obtained in advance according to a large number of experiments, so that the magnitude relationship between the first detected sound pressure level of the n center frequencies and the preset sound pressure level thresholds of the n center frequencies can be analyzed, the relationship between the vibration damping device and the refrigerant pipeline can be determined, and then the corresponding prompt information can be generated according to the determined relationship between the vibration damping device and the refrigerant pipeline.
And step 204, displaying prompt information.
In the embodiment of the application, the prompt information is displayed in the display area corresponding to the information display equipment.
It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.
In the embodiment of the application, after the first noise information generated when the outdoor unit operates is acquired, the prompt information for indicating the relationship between the vibration damping device and the refrigerant pipeline is generated based on the first noise information, and the prompt information is displayed. Therefore, the relation between the vibration damper and the refrigerant pipeline is determined by analyzing the first noise information generated when the outdoor unit operates, and the prompt information is adopted for displaying, so that the problem that the situation that the novel damping foam material possibly falls off from the pipeline in the refrigerant pipeline system cannot be detected at present is solved, the technical scheme for detecting whether the novel damping foam material falls off from the pipeline in the refrigerant pipeline system is provided, and the risk of breakage of the pipeline in the refrigerant pipeline system is reduced.
Based on the foregoing embodiments, an embodiment of the present application provides a fault detection method, which is applied to a fault detection device and shown in fig. 3, and includes the following steps:
step 301, obtaining first noise information generated when the outdoor unit operates.
Step 302, obtaining a first detected sound pressure level of n center frequencies corresponding to the target octave from the first noise information.
Wherein n is an integer greater than or equal to 1.
Assume that one-third octave is obtained from the first noise information, and there are four center frequencies, which are f1, f2, f3 and f 4. The first detected sound pressure level corresponding to the center frequency f1 is B11, the first detected sound pressure level corresponding to the center frequency f2 is B12, the first detected sound pressure level corresponding to the center frequency f3 is B13, and the first detected sound pressure level corresponding to the center frequency f4 is B14.
Step 303, if the first detected sound pressure level corresponding to each of the n center frequencies is smaller than the preset sound pressure level threshold corresponding to each of the n center frequencies, generating first indication information for indicating that the vibration damping device does not fall off from the refrigerant pipeline.
The first noise information comprises a first detection sound pressure level corresponding to each center frequency of the target octave, and the prompt information comprises first indication information.
In the embodiment of the present application, it is assumed that the preset sound pressure level threshold corresponding to the center frequency f1 is B01, the preset sound pressure level threshold corresponding to the center frequency f2 is B02, the preset sound pressure level threshold corresponding to the center frequency f3 is B03, and the preset sound pressure level threshold corresponding to the center frequency f4 is B04, so that when B11 < B01, B12 < B02, B13 < B03, and B14 < B04, first indication information for indicating that the vibration damping device is not detached from the refrigerant pipeline is generated.
Step 304, if the first detected sound pressure level corresponding to at least one of the n center frequencies is greater than or equal to the preset sound pressure level threshold corresponding to the at least one center frequency, controlling the timer to start timing.
In the embodiment of the present application, the timer is controlled to start timing when the first detected sound pressure level corresponding to at least one of the center frequencies f1, f2, f3, and f4 is greater than or equal to the corresponding preset sound pressure level threshold. At the moment, the risk of falling between the vibration damper and the refrigerant pipeline can be judged, but in order to reduce the condition that the collected first noise information is polluted by external noise, the false alarm condition is caused, the follow-up operation can be continuously executed, the probability of false alarm is reduced, and the accuracy of the prompt information is effectively improved.
And 305, if the timing duration of the timer is detected to be the preset duration, controlling the timer to stop timing, and acquiring second noise information generated when the outdoor unit operates.
In this embodiment, the preset duration may be several minutes to several hours, wherein the longer the preset duration is, the more the influence of the external environment noise on the noise information collected when the outdoor unit operates can be reduced.
And step 306, generating prompt information based on the second noise information.
In the embodiment of the application, under the condition that the risk of falling between the vibration damping device and the refrigerant pipeline is determined, the second noise information which is collected again after the outdoor unit operates for a period of time is analyzed, so that whether the falling between the vibration damping device and the refrigerant pipeline really exists or not is further determined, and the accuracy of judging the falling between the vibration damping device and the refrigerant pipeline is effectively improved.
And step 307, displaying prompt information.
Based on the foregoing embodiments, in other embodiments of the present application, step 306 may be implemented by steps 306a to 306 b:
and step 306a, acquiring a second detected sound pressure level of n central frequencies corresponding to the target octave from the second noise information.
In this embodiment of the application, the second detected sound pressure levels of the n center frequencies corresponding to the target octave obtained from the second noise information may be in sequence: the second detected sound pressure level corresponding to the center frequency f1 is B21, the second detected sound pressure level corresponding to the center frequency f2 is B22, the second detected sound pressure level corresponding to the center frequency f3 is B23, and the first detected sound pressure level corresponding to the center frequency f4 is B24.
And step 306b, generating prompt information based on the second detected sound pressure levels of the n central frequencies and preset sound pressure level thresholds of the n central frequencies.
In the embodiment of the present application, the preset sound pressure level thresholds of the n center frequencies are: a preset sound pressure level threshold corresponding to the center frequency f1 is B01, a preset sound pressure level threshold corresponding to the center frequency f2 is B02, a preset sound pressure level threshold corresponding to the center frequency f3 is B03, and a preset sound pressure level threshold corresponding to the center frequency f4 is B04, so that B21 and B01, B22 and B02, B23 and B03, and B24 and B04 are sequentially analyzed to generate prompt information including a relationship between the vibration damping device and the refrigerant pipeline.
Based on the foregoing embodiments, in other embodiments of the present application, step 306b may be implemented by steps a 11-a 14:
step a11, if the second detected sound pressure level corresponding to each of the n center frequencies is less than the preset sound pressure level threshold corresponding to each of the n center frequencies, generating first indication information for indicating that the vibration damping device does not fall off from the refrigerant pipeline.
The second noise information comprises a second detection sound pressure level corresponding to each center frequency of the target octave, and the prompt information comprises first indication information.
In the embodiment of the application, when B21 < B01, B22 < B02, B23 < B03 and B24 < B04, first indication information for indicating that the vibration damping device is not detached from the refrigerant pipeline is generated.
Step a12, if the second detected sound pressure level corresponding to at least one of the n center frequencies is greater than or equal to the preset sound pressure level threshold corresponding to at least one of the center frequencies, obtaining a first total sound pressure level of the target frequency band from the first noise information.
In this embodiment, the first total sound pressure level obtained from the first noise information in the target frequency band may be an accumulated sum of first detected sound pressure levels corresponding to center frequencies included in the target frequency band range, for example, the target frequency band may be a low frequency band, and if the target frequency band includes center frequencies f1, f2, f3, and f4, the corresponding first total sound pressure level may be an accumulated sum of four first detected sound pressure levels, i.e., B11, B12, B13, and B14.
And a13, acquiring a second total sound pressure level of the target frequency band from the second noise information.
In the embodiment of the present application, the second total sound pressure level may be an accumulated sum of four first detected sound pressure levels B21, B22, B23, and B24.
Step a14, generating a prompt message based on the first total sound pressure level and the second total sound pressure level.
In other embodiments of the present application, the first total sound pressure level and the second total sound pressure level are analyzed to generate the obtained prompt information including the relationship between the vibration damping device and the refrigerant pipeline.
Based on the foregoing embodiments, in other embodiments of the present application, step a14 may be implemented by steps a141 to a 145:
step a141, determining an absolute value of a difference between the first total sound pressure level and the second total sound pressure level to obtain a first target value.
After the fault detection device executes step a141, it may select to execute step a142 or steps a143 to a 145; if the first target value is smaller than the predetermined decibel value, the step a142 is selected to be executed, if the first target value is greater than or equal to the predetermined decibel value, the steps a143 to a145 are selected to be executed, or if the first target value is greater than or equal to the predetermined decibel value, the steps a144 to a146 are selected to be executed:
and a142, if the first target value is smaller than the preset decibel value, generating second indication information for indicating that the vibration damper falls off from the refrigerant pipeline.
Wherein the indication information comprises second indication information.
In the embodiment of the present application, the preset db value may be an empirical value obtained through a large number of experiments. The preset decibel value may range from 1 to 3 decibels (dBA).
Step a143, if the first target value is greater than or equal to a preset decibel value, generating first indication information.
In the embodiment of the application, when the first target value is greater than or equal to the preset decibel value, it indicates that the polyurethane damping foam material does not fall off from the refrigerant pipeline, so that the second indication information can be generated, and the detection operation for detecting whether the polyurethane damping foam material falls off from the refrigerant pipeline is finished.
Step a144, if the first target value is greater than or equal to the preset decibel value, starting a timer to start timing.
In the embodiment of the application, the first target value is greater than or equal to the preset decibel value, which indicates that external interference exists, so that the detection can be continued in order to ensure that whether the polyurethane damping foam material falls off from the refrigerant pipeline is accurately determined.
Step a145, when the timing duration of the timer is detected to be the preset duration, controlling the timer to stop timing, and acquiring third noise information generated when the outdoor unit operates.
And a step a146 of generating prompt information based on the third noise information.
It should be noted that the implementation process of steps a145 to a146 is completely the same as the process of steps 305 to 306, and detailed description thereof is omitted.
Based on the foregoing embodiments, in other embodiments of the present application, step a145 may be implemented by steps b 11-b 12:
and b11, acquiring a third detected sound pressure level of the n central frequencies corresponding to the target octave from the third noise information.
And b12, generating prompt information based on the third detected sound pressure level of the n central frequencies and the preset sound pressure level threshold of the n central frequencies.
It should be noted that the implementation process of steps b 11-b 12 is completely the same as the process of steps 306 a-306 b, and will not be described in detail here.
Based on the foregoing embodiments, in other embodiments of the present application, step b12 may be implemented by steps b121 to b 124:
step b121, if the third detected sound pressure level corresponding to each of the n center frequencies is less than the preset sound pressure level threshold corresponding to each of the n center frequencies, generating first indication information.
And the third noise information comprises a third detected sound pressure level corresponding to each center frequency of the target octave.
And b122, if the third detected sound pressure level corresponding to at least one of the n central frequencies is greater than or equal to the preset sound pressure level threshold corresponding to at least one central frequency, acquiring a third total sound pressure level of the target frequency band from the second noise information.
And b123, acquiring a fourth total sound pressure level of the target frequency band from the third noise information.
And b124, generating prompt information based on the third total sound pressure level and the fourth total sound pressure level.
Based on the foregoing embodiments, in other embodiments of the present application, step b124 may be implemented by steps c 11-c 14:
and c11, determining the absolute value of the difference between the third total sound pressure level and the fourth total sound pressure level to obtain a second target value.
And c12, if the second target value is smaller than the preset decibel value, generating second indication information.
And c13, if the second target value is greater than or equal to the preset decibel value, starting a timer to start timing.
And c14, when the timing duration of the timer is detected to be the preset duration, controlling the timer to stop timing, acquiring fourth noise information generated when the outdoor unit operates, repeating the preset times, generating second indication information if the third target value is smaller than the preset decibel value, and generating first indication information if the third target value is larger than or equal to the preset decibel value.
In this embodiment of the application, the preset number of times may be a value set by a user according to an actual requirement, for example, the preset number of times may be 3 times, that is, in the process of repeating the execution for 3 times, if an absolute value of a difference between a fifth total sound pressure level and a fourth sound pressure level in the fourth noise information is a fourth target value, and the fourth target value is greater than or equal to a preset decibel value, the fifth noise information is obtained again, if an absolute value of a difference between a sixth total sound pressure level and a fifth total sound pressure level in the fifth noise information is a third target value, and if the third target value is greater than or equal to the preset decibel value, the first indication information is generated, and the detection operation of whether the polyurethane damping foam material falls off from the refrigerant pipe is finished.
Based on the foregoing embodiments, an embodiment of the present application provides an outdoor unit, including at least: the system comprises a refrigerant pipeline system of the outdoor unit, a vibration damper, a compressor, a noise detection device and an outdoor unit chassis. The refrigerant pipeline system is used for transmitting refrigerants; the vibration damper is used for wrapping and fixing a refrigerant pipeline in an outdoor unit refrigerant pipeline system; the compressor assembly is used for compressing a refrigerant in the driving refrigerant pipeline system; the noise detection device is used for collecting noise information generated when the outdoor unit operates; and the outdoor unit chassis is used for supporting the refrigerant pipeline system, the vibration damper, the compressor and the noise detection device.
Fig. 4 shows an installation schematic diagram of the noise detection device for collecting noise information, and fig. 3 includes a refrigerant pipeline system 31, a vibration damping device 32, a compressor 33, a noise detection device 34, and an outdoor unit chassis 35. In some application scenarios, the refrigerant pipeline of the outdoor unit may be a four-way valve pipeline component, and the vibration damping device may be a novel damping foam material, for example, a polyurethane damping foam material. Alternatively, in other embodiments, the noise detection device 34 may be disposed on the casing 36 (not shown in fig. 4) of the outdoor unit, as shown in fig. 5.
Based on the foregoing embodiments, an embodiment of the present application provides a fault detection method, which includes the following specific steps:
the method comprises the following steps: after the air conditioning equipment receives a detection instruction for detecting whether the polyurethane damping foaming material falls off from the refrigerant pipeline, noise signals generated when the outdoor unit operates are collected through a noise sensor arranged in the outdoor unit, and the noise signals collected by the noise sensor are sent to a spectrum analyzer, so that sound pressure levels corresponding to the center frequencies of different octaves can be obtained, for example, a sound pressure level B corresponding to the center frequency of one-third octave can be obtained1iWhere i is 0,1,2, … …, n, n is the total number of center frequencies obtained.
Step two: judgment BiWhether a noise threshold specified by the corresponding center frequency is exceeded.
Wherein, the noise threshold corresponding to different center frequencies can be shown in the following table, wherein, the first row f in the tableiFor representing one third octave center frequency, the second row represents a noise threshold set for each center frequency：
Figure BDA0002922337530000121
Step three: if B is1iAnd (i is less than the corresponding noise threshold value, and the value of 0,1,2, … …, n) generates a prompt message for indicating that the polyurethane damping foaming material does not fall off from the refrigerant pipeline.
In some application scenarios, if the sound pressure levels corresponding to all the center frequencies are smaller than the noise threshold values corresponding to all the center frequencies, no prompt information may be generated, and at this time, when no prompt information is generated, it is indicated that the default polyurethane damping foam material does not fall off from the refrigerant pipeline.
Step four: if at least one B1iThe noise level is larger than or equal to the corresponding noise threshold value, after a certain time interval, the noise sensor in the outdoor unit is used for collecting the noise signal when the outdoor unit runs again to obtain the sound pressure level B corresponding to the center frequency of one third octave2i，i＝0,1,2,……,n。
Wherein if at least one B1iGreater than or equal to its corresponding noise threshold, which indicates the existence of significant low-frequency radiated noise, but the influence of interference by ambient noise exists, and the interference needs to be eliminated as much as possible. Therefore, the ambient noise interference can be eliminated by the operation of step four to step five.
Step five: judgment B2iWhether a noise threshold specified by the corresponding center frequency is exceeded.
Step six: if B is2iAnd (i is less than the corresponding noise threshold value, and the value of 0,1,2, … …, n) generates a prompt message for indicating that the polyurethane damping foaming material does not fall off from the refrigerant pipeline.
Step seven: if at least one B2iAnd if the total noise value is larger than or equal to the corresponding noise threshold value, comparing the total noise value acquired in the step one with the total noise value acquired in the step four, namely comparing the total noise values in the two acquisition processes.
Wherein, the total noise value collected in the step one and the total noise value collected in the step fourThe total noise value of (a) may be the magnitude of the noise value in the low frequency range, i.e., the range of 31.5 hertz (Hz) to 630Hz, during each acquisition. If at least one B2iGreater than or equal to its corresponding noise threshold indicates that significant low frequency radiated noise is indeed present.
Step eight: if the difference value of the total noise values in the two previous acquisition processes exceeds 2dBA, the fourth step to the seventh step need to be repeatedly executed again until the difference value of the total noise values in the two previous acquisition processes is less than 2dBA, which indicates that the polyurethane damping material falls off from the refrigerant pipeline, and further causes the pipeline vibration to be abnormal, so that prompt information that the polyurethane damping foam material falls off from the refrigerant pipeline can be generated. Furthermore, the prompt information can be fed back to the fault system, so that the fault system can prompt the fault through the prompt information, and even can give a fault alarm.
Step nine: if the difference value of the total noise values in the two acquisition processes exceeds 2dBA, the phenomenon that the polyurethane damping material falls off from the refrigerant pipeline is indicated, and further pipeline vibration is abnormal, so that prompt information that the polyurethane damping foaming material falls off from the refrigerant pipeline can be generated. Furthermore, the prompt information can be fed back to the fault system, so that the fault system can prompt the fault through the prompt information, and even can give a fault alarm.
It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.
In the embodiment of the application, after the first noise information generated when the outdoor unit operates is acquired, the prompt information for indicating the relationship between the vibration damping device and the refrigerant pipeline is generated based on the first noise information, and the prompt information is displayed. Therefore, the relation between the vibration damper and the refrigerant pipeline is determined by analyzing the first noise information generated when the outdoor unit operates, and the prompt information is adopted for displaying, so that the problem that the situation that the novel damping foam material possibly falls off from the pipeline in the refrigerant pipeline system cannot be detected at present is solved, the technical scheme for detecting whether the novel damping foam material falls off from the pipeline in the refrigerant pipeline system is provided, and the risk of breakage of the pipeline in the refrigerant pipeline system is reduced.
Based on the foregoing embodiments, embodiments of the present application provide a fault detection apparatus, and as shown in fig. 6, the fault detection apparatus 4 may include: an acquisition unit 41, a generation unit 42, and a display unit 43; wherein:
an obtaining unit 41, configured to obtain first noise information generated when the outdoor unit operates;
the generating unit 42 is configured to generate prompt information for indicating a relationship between the vibration damping device and the refrigerant pipeline based on the first noise information;
and a display unit 43 for displaying the prompt information.
In other embodiments of the present application, the generating unit 42 includes: the device comprises an acquisition module and a generation module; wherein:
the acquisition module is used for acquiring first detection sound pressure levels of n central frequencies corresponding to the target octave from the first noise information; wherein n is an integer greater than or equal to 1;
and the generating module is used for generating prompt information based on the first detection sound pressure levels of the n central frequencies and the preset sound pressure level threshold values of the n central frequencies.
In other embodiments of the present application, the generation module is specifically configured to implement the following steps:
if the first detected sound pressure level corresponding to each of the n central frequencies is smaller than the preset sound pressure level threshold corresponding to each central frequency, generating first indication information for indicating that the vibration damping device does not fall off from the refrigerant pipeline; the first noise information comprises a first detection sound pressure level corresponding to each center frequency of the target octave, and the prompt information comprises first indication information;
if the first detected sound pressure level corresponding to at least one center frequency in the n center frequencies is greater than or equal to the preset sound pressure level threshold corresponding to at least one center frequency, controlling a timer to start timing;
if the timing duration of the timer is detected to be the preset duration, controlling the timer to stop timing, and acquiring second noise information generated when the outdoor unit operates;
and generating prompt information based on the second noise information.
In other embodiments of the present application, the generating module is configured to, when the generating step generates the prompt information based on the second noise information, perform the following steps:
acquiring second detection sound pressure levels of n central frequencies corresponding to the target octave from the second noise information;
and generating prompt information based on the second detected sound pressure levels of the n central frequencies and preset sound pressure level thresholds of the n central frequencies.
In other embodiments of the present application, the generating module is configured to implement the steps based on the second detected sound pressure levels of the n center frequencies and the preset sound pressure level thresholds of the n center frequencies, and when generating the prompt information, the generating module may implement the following steps:
if the second detected sound pressure level corresponding to each of the n central frequencies is smaller than the preset sound pressure level threshold corresponding to each central frequency, generating first indication information for indicating that the vibration damping device does not fall off from the refrigerant pipeline; the second noise information comprises a second detection sound pressure level corresponding to each center frequency of the target octave, and the prompt information comprises first indication information;
if the second detected sound pressure level corresponding to at least one center frequency in the n center frequencies is greater than or equal to a preset sound pressure level threshold corresponding to at least one center frequency, acquiring a first total sound pressure level of a target frequency band from the first noise information;
acquiring a second total sound pressure level of the target frequency band from the second noise information;
generating a prompt message based on the first total sound pressure level and the second total sound pressure level.
In other embodiments of the present application, the generating module is configured to, when the generating step generates the prompt information based on the first total sound pressure level and the second total sound pressure level, perform the following steps:
determining an absolute value of a difference between the first total sound pressure level and the second total sound pressure level to obtain a first target value;
if the first target value is smaller than the preset decibel value, generating second indication information for indicating that the vibration damper falls off from the refrigerant pipeline; wherein the indication information comprises second indication information.
In other embodiments of the present application, the generation module is further configured to implement the following steps:
if the first target value is larger than or equal to the preset decibel value, starting a timer to start timing;
when the timing duration of the timer is detected to be the preset duration, controlling the timer to stop timing, and acquiring third noise information generated when the outdoor unit operates;
and generating prompt information based on the third noise information.
In other embodiments of the present application, the generating module is configured to, when the generating step generates the prompt information based on the third noise information, perform the following steps:
acquiring a third detection sound pressure level of n central frequencies corresponding to the target octave from the third noise information;
and generating prompt information based on the third detected sound pressure level of the n central frequencies and the preset sound pressure level threshold of the n central frequencies.
In other embodiments of the present application, the generating module is configured to implement the steps based on the third detected sound pressure level of the n center frequencies and the preset sound pressure level thresholds of the n center frequencies, and when generating the prompt information, the generating module may implement the following steps:
if the third detected sound pressure level corresponding to each of the n central frequencies is smaller than the preset sound pressure level threshold corresponding to each central frequency, generating first indication information; the third noise information comprises a third detection sound pressure level corresponding to each center frequency of the target octave;
if the third detected sound pressure level corresponding to at least one center frequency in the n center frequencies is greater than or equal to the preset sound pressure level threshold corresponding to at least one center frequency, acquiring a third total sound pressure level of the target frequency band from the second noise information;
acquiring a fourth total sound pressure level of the target frequency band from the third noise information;
generating a prompt message based on the third total sound pressure level and the fourth total sound pressure level.
In other embodiments of the present application, the generating module is configured to, when the generating step generates the prompt information based on the third total sound pressure level and the fourth total sound pressure level, perform the following steps:
determining an absolute value of a difference between the third total sound pressure level and the fourth total sound pressure level to obtain a second target value;
and if the second target value is smaller than the preset decibel value, generating second indication information.
In other embodiments of the present application, the generation module is further configured to implement the following steps:
if the second target value is greater than or equal to the preset decibel value, starting a timer to start timing;
and when the timing duration of the timer is detected to be the preset duration, controlling the timer to stop timing, acquiring fourth noise information generated when the outdoor unit operates, repeating the steps until an obtained third target value is smaller than the preset decibel value, and generating the second indication information, or repeating the steps for the preset times, and generating the first indication information if the third target value is larger than or equal to the preset decibel value.
It should be noted that, in the embodiment, a specific implementation process of information interaction between the units and the modules may refer to an implementation process in the fault detection method provided in the embodiment corresponding to fig. 1 to 3, and details are not described here.
In the embodiment of the application, after the first noise information generated when the outdoor unit operates is acquired, the prompt information for indicating the relationship between the vibration damping device and the refrigerant pipeline is generated based on the first noise information, and the prompt information is displayed. Therefore, the relation between the vibration damper and the refrigerant pipeline is determined by analyzing the first noise information generated when the outdoor unit operates, and the prompt information is adopted for displaying, so that the problem that the situation that the novel damping foam material possibly falls off from the pipeline in the refrigerant pipeline system cannot be detected at present is solved, the technical scheme for detecting whether the novel damping foam material falls off from the pipeline in the refrigerant pipeline system is provided, and the risk of breakage of the pipeline in the refrigerant pipeline system is reduced.
Based on the foregoing embodiments, embodiments of the present application provide a fault detection device, and as shown in fig. 7, the fault detection device 5 may include: noise detection device 51, memory 52, communication bus 53, processor 54 and display device 55, wherein:
the noise detection device 51 is used for collecting first noise information generated when the outdoor unit operates and sending the first noise information to the processor;
a memory 52 for storing executable instructions;
a communication bus 53 for implementing communication connections between the noise detection device 51, the memory 52, the processor 54 and the display device 55;
a processor 54, configured to execute the fault detection program stored in the memory, so as to implement the steps of the fault detection method shown in fig. 1 to 3, which are not described in detail herein;
the display device 55 is configured to display a prompt message obtained when the processor implements the fault detection method as shown in any one of fig. 1 to 3.
It should be noted that, in the embodiment, a specific implementation process of information interaction between the units and the modules may refer to an implementation process in the fault detection method provided in the embodiment corresponding to fig. 1 to 3, and details are not described here.
In the embodiment of the application, after the first noise information generated when the outdoor unit operates is acquired, the prompt information for indicating the relationship between the vibration damping device and the refrigerant pipeline is generated based on the first noise information, and the prompt information is displayed. Therefore, the relation between the vibration damper and the refrigerant pipeline is determined by analyzing the first noise information generated when the outdoor unit operates, and the prompt information is adopted for displaying, so that the problem that the situation that the novel damping foam material possibly falls off from the pipeline in the refrigerant pipeline system cannot be detected at present is solved, the technical scheme for detecting whether the novel damping foam material falls off from the pipeline in the refrigerant pipeline system is provided, and the risk of breakage of the pipeline in the refrigerant pipeline system is reduced.
Based on the foregoing embodiments, an embodiment of the present application provides an air conditioning apparatus, which is shown in fig. 8, and the air conditioning apparatus 6 includes: the indoor unit 61, the outdoor unit 62, and the fault detection device 63 provided in fig. 7 and the corresponding embodiments, so as to implement the implementation process in the fault detection method provided in the embodiments corresponding to fig. 1 to 3, which is not described herein again.
Based on the foregoing embodiments, embodiments of the present application provide a computer-readable storage medium, referred to as a storage medium for short, where one or more programs are stored in the computer-readable storage medium, and the one or more programs can be executed by one or more processors to implement the implementation process of the fault detection method provided in the embodiments corresponding to fig. 1 to 3, and details are not described here again.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims (15)

1. A method of fault detection, the method comprising:
acquiring first noise information generated when an outdoor unit operates;
generating prompt information for indicating the relation between the vibration damping device and the refrigerant pipeline based on the first noise information; the vibration reduction device is used for wrapping and fixing a refrigerant pipeline in an outdoor unit refrigerant pipeline system so as to reduce vibration noise of the refrigerant pipeline when the outdoor unit operates;
and displaying the prompt information.
2. The method of claim 1, wherein generating, based on the first noise information, a notification indicating a relationship between the vibration damping device and the refrigerant line comprises:
acquiring first detection sound pressure levels of n central frequencies corresponding to the target octave from the first noise information; wherein n is an integer greater than or equal to 1;
and generating the prompt information based on the first detection sound pressure levels of the n central frequencies and the preset sound pressure level thresholds of the n central frequencies.
3. The method according to claim 2, wherein the generating the prompt message based on the first detected sound pressure level of the n center frequencies and a preset sound pressure level threshold of the n center frequencies comprises:
if a first detected sound pressure level corresponding to each of the n center frequencies is smaller than a preset sound pressure level threshold corresponding to each of the n center frequencies, generating first indication information for indicating that the vibration damping device does not fall off from the refrigerant pipeline; the first noise information comprises a first detection sound pressure level corresponding to each center frequency of a target octave, and the prompt information comprises the first indication information;
if a first detected sound pressure level corresponding to at least one of the n center frequencies is greater than or equal to a preset sound pressure level threshold corresponding to at least one of the center frequencies, controlling a timer to start timing;
if the timer timing duration is detected to be preset duration, controlling the timer to stop timing, and acquiring second noise information generated when the outdoor unit operates;
and generating the prompt message based on the second noise message.
4. The method of claim 3, wherein generating the cue information based on the second noise information comprises:
acquiring second detection sound pressure levels of n central frequencies corresponding to the target octave from the second noise information;
and generating the prompt information based on the second detected sound pressure levels of the n central frequencies and the preset sound pressure level thresholds of the n central frequencies.
5. The method according to claim 4, wherein the generating the prompt message based on the second detected sound pressure levels of the n center frequencies and the preset sound pressure level thresholds of the n center frequencies comprises:
if a second detected sound pressure level corresponding to each of the n center frequencies is smaller than a preset sound pressure level threshold corresponding to each of the n center frequencies, generating first indication information for indicating that the vibration damping device does not fall off from the refrigerant pipeline; the second noise information comprises a second detection sound pressure level corresponding to each center frequency of the target octave, and the prompt information comprises the first indication information;
if a second detected sound pressure level corresponding to at least one of the n center frequencies is greater than or equal to a preset sound pressure level threshold corresponding to at least one of the center frequencies, acquiring a first total sound pressure level of a target frequency band from the first noise information;
acquiring a second total sound pressure level of the target frequency band from the second noise information;
generating the prompt message based on the first total sound pressure level and the second total sound pressure level.
6. The method of claim 5, wherein generating the cue information based on the first total sound pressure level and the second total sound pressure level comprises:
determining an absolute value of a difference between the first total sound pressure level and the second total sound pressure level to obtain a first target value;
if the first target value is smaller than a preset decibel value, generating second indication information for indicating that the vibration damper falls off from the refrigerant pipeline; wherein the indication information comprises the second indication information;
if the first target value is greater than or equal to a preset decibel value, generating first indication information for indicating that the vibration damper does not fall off from the refrigerant pipeline; wherein the indication information comprises the first indication information.
7. The method of claim 6, further comprising:
if the first target value is larger than or equal to the preset decibel value, starting the timer to start timing;
when the timer timing duration is detected to be the preset duration, controlling the timer to stop timing, and acquiring third noise information generated when the outdoor unit operates;
and generating the prompt message based on the third noise message.
8. The method of claim 7, wherein generating the cue information based on the third noise information comprises:
acquiring a third detection sound pressure level of n central frequencies corresponding to the target octave from the third noise information;
and generating the prompt information based on the third detected sound pressure levels of the n central frequencies and the preset sound pressure level thresholds of the n central frequencies.
9. The method according to claim 8, wherein the generating the prompt message based on the third detected sound pressure levels of the n center frequencies and the preset sound pressure level thresholds of the n center frequencies comprises:
if a third detected sound pressure level corresponding to each of the n center frequencies is smaller than a preset sound pressure level threshold corresponding to each of the n center frequencies, generating the first indication information; wherein the third noise information includes a third detected sound pressure level corresponding to each center frequency of the target octave;
if a third detected sound pressure level corresponding to at least one of the n center frequencies is greater than or equal to a preset sound pressure level threshold corresponding to at least one of the center frequencies, acquiring a third total sound pressure level of a target frequency band from the second noise information;
acquiring a fourth total sound pressure level of the target frequency band from the third noise information;
generating the prompt message based on the third total sound pressure level and the fourth total sound pressure level.
10. The method of claim 9, wherein generating the cue information based on the third total sound pressure level and the fourth total sound pressure level comprises:
determining an absolute value of a difference between the third total sound pressure level and the fourth total sound pressure level to obtain a second target value;
and if the second target value is smaller than a preset decibel value, generating the second indication information.
11. The method of claim 10, further comprising:
if the second target value is larger than or equal to the preset decibel value, starting the timer to start timing;
and when the timer timing duration is detected to be the preset duration, controlling the timer to stop timing, acquiring fourth noise information generated when the outdoor unit operates, repeating the steps until an obtained third target value is smaller than the preset decibel value, and generating the second indication information, or repeating the steps for a preset number of times, and generating the first indication information if the third target value is larger than or equal to the preset decibel value.
12. A fault detection device, characterized in that the device comprises: the device comprises an acquisition unit, a generation unit and a display unit; wherein:
the acquisition unit is used for acquiring first noise information generated when the outdoor unit operates;
the generating unit is used for generating prompt information used for indicating the relation between the vibration damping device and the refrigerant pipeline based on the first noise information;
and the display unit is used for displaying the prompt information.
13. A fault detection device, characterized in that the fault detection device comprises: the device comprises a processor, a memory, a noise detection device, a display device and a communication bus; wherein:
the noise detection device is used for collecting first noise information generated when the outdoor unit operates and sending the first noise information to the processor;
the memory to store executable instructions;
the communication bus is used for realizing communication connection between the processor and the memory;
the processor, configured to execute a fault detection program stored in the memory based on the first noise information, so as to implement the steps of the fault detection method according to any one of claims 1 to 11;
the display device is used for displaying prompt information obtained when the processor implements the fault detection method according to any one of claims 1 to 11.
14. An air conditioner comprising an indoor unit, an outdoor unit, and the fault detection device of claim 13.
15. A storage medium, characterized in that the storage medium has stored thereon a failure detection program which, when executed by a processor, implements the steps of the failure detection method according to any one of claims 1 to 11.
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