An airflow movement noise reduction method, system, oxygen generator and ventilator

Abstract

The present application relates to an airflow movement noise reduction method, system, oxygen generator and ventilator, and relates to the field of noise reduction technology. It includes obtaining current airflow data information and current fan speed information; determining current noise decibel information; judging whether the current noise decibel information is greater than the standard decibel information; if it is less, no change is made; if it is greater, determining current working condition information; determining current fan speed range information; screening the minimum speed information; obtaining the minimum airflow data information; determining the minimum noise decibel information; judging whether the minimum noise decibel information is greater than the standard decibel information; if it is greater, maintaining the minimum speed information; if it is less, determining the standard airflow data information; increasing the fan speed from the minimum speed information. The present application can achieve the purpose of reducing noise without affecting the working requirements of the fan, realize the purpose of targeted noise reduction, and improve the intelligent noise reduction effect of the ventilator.

Description

Technical Field

[0001] The present application relates to the field of noise reduction technology, and in particular to an air flow movement noise reduction method, system, oxygen generator and ventilator. Background Art

[0002] The audience group in the field of medical devices is patients, and noise has a huge impact on the treatment of patients.

[0003] The method for noise reduction of medical devices on the market is physical structure noise reduction, which is usually achieved by changing the cavity structure and adding sound-absorbing cotton.

[0004] Regarding the above related technologies, the inventor believes that due to the limitations of physical structure noise reduction, it can only reduce the noise to a certain average value, and it is impossible to achieve targeted noise reduction for different decibels of noise in different treatment environments, and there is still room for improvement. Summary of the Invention

[0005] In order to improve the problem that physical structure noise reduction cannot achieve targeted noise reduction for different decibels of noise in different treatment environments, the present application provides an air flow movement noise reduction method, system, storage medium and intelligent terminal.

[0006] In a first aspect, the present application provides an air flow movement noise reduction method, adopting the following technical solution:

[0007] An air flow movement noise reduction method includes:

[0008] Obtain the current air flow data information and the current fan speed information at the air outlet end;

[0009] Perform matching analysis based on the noise decibel information stored in the preset air flow database and the current air flow data information to determine the noise decibel corresponding to the current air flow data information, and define this noise decibel as the current noise decibel information;

[0010] Judge whether the current noise decibel information is greater than the preset standard decibel information;

[0011] If it is less, no change is made;

[0012] If it is greater, perform matching analysis based on the working condition information stored in the preset working condition database and the current fan speed information to determine the working condition corresponding to the current fan speed information, and define this working condition as the current working condition information;

[0013] Perform matching analysis based on the fan speed range information stored in the working condition database and the current working condition information to determine the fan speed range corresponding to the current working condition information, and define this fan speed range as the current fan speed range information;

[0014] Screen the minimum value in the current fan speed range information, and define this minimum value as the minimum speed information;

[0015] After the fan speed gradually adjusts from the current fan speed information to the minimum speed information, obtain the air flow size when the fan is adjusted to the minimum speed information, and define this air flow size as the minimum air flow data information;

[0016] Perform matching analysis based on the noise decibel information and the minimum air flow data information stored in the air flow database to determine the noise decibel corresponding to the minimum air flow data information, and define this noise decibel as the minimum noise decibel information;

[0017] Judge whether the minimum noise decibel information is greater than the standard decibel information;

[0018] If it is greater, maintain the minimum speed information;

[0019] If it is less, perform matching analysis based on the air flow data information and the standard decibel information stored in the air flow database to determine the air flow data corresponding to the standard decibel information, and define this air flow data as the standard air flow data information;

[0020] Increase the fan speed from the minimum speed information until the standard air flow data information is obtained.

[0021] By adopting the above technical solution, when noise is generated, by appropriately reducing the fan speed, the air flow rate can be reduced as much as possible below the standard decibel information, so as to achieve the purpose of reducing noise without affecting the working requirements of the fan, scientifically handle the balance between working requirements and noise reduction requirements, and thus achieve the purpose of targeted noise reduction, improving the intelligent noise reduction effect of the ventilator.

[0022] Optionally, if the minimum noise decibel information is greater than the standard decibel information, the method for maintaining the minimum speed information includes:

[0023] Calculate the decibel reduction information based on the minimum noise decibel information and the decibel reduction information of the sound-absorbing cotton;

[0024] Judge whether the decibel reduction information is less than 0;

[0025] If it is greater, the fan speed gradually adjusts from the current fan speed information to the minimum speed information and a sound-absorbing cotton is placed at the air outlet end;

[0026] If it is less, calculate the increased noise decibel information based on the minimum noise decibel information and the decibel reduction information;

[0027] Match and analyze the airflow data information stored in the airflow database with the increased noise decibel information to determine the airflow data corresponding to the increased noise decibel information, and define this airflow data as the increased airflow data information;

[0028] Increase the fan speed information from the minimum speed information until the increased airflow data information is obtained, and place a sound-absorbing cotton at the air outlet end.

[0029] By adopting the above technical solution, when it is impossible to reduce the noise below the standard noise within the working requirement range, a physical noise reduction device is set, so that the two cooperate with each other to achieve the purpose of further noise reduction, and the noise reduction effect of the ventilator is improved.

[0030] Optionally, it also includes a method for checking and processing the current airflow data information, and this method includes:

[0031] Match and analyze the airflow data information stored in the preset theoretical database with the current fan speed information to determine the airflow data corresponding to the current fan speed information, and define this airflow data as the theoretical airflow data information;

[0032] Judge whether the airflow velocity in the current airflow data information is consistent with the airflow velocity in the theoretical airflow data information;

[0033] If the airflow velocity in the current airflow data information is consistent with the airflow velocity in the theoretical airflow data information, output the current airflow data information;

[0034] If the airflow velocity in the current airflow data information is inconsistent with the airflow velocity in the theoretical airflow data information, obtain the intake airflow data information at the intake end of the pipeline;

[0035] Judge whether the intake airflow data information is consistent with the theoretical airflow data information;

[0036] If the intake airflow data information is consistent with the theoretical airflow data information, analyze the airflow data difference information according to the current airflow data information and the intake airflow data information;

[0037] Match and analyze the pipeline problem information stored in the preset problem database with the airflow data difference information to determine the pipeline problem corresponding to the airflow data difference information, and define this pipeline problem as the actual pipeline problem information;

[0038] Output the actual pipeline problem information;

[0039] If the intake airflow data information is inconsistent with the theoretical airflow data information and is consistent with the current airflow data information, output the fan problem information.

[0040] By adopting the above technical solution, the problem of abnormal data is obtained by analyzing the theoretical air flow data and the actual air flow data, and then the location of the problem is determined by combining whether the air flow in the front and rear pipelines is consistent, so as to provide the cause of the problem for the staff specifically, which is convenient for the staff to carry out maintenance and improves the maintenance efficiency of the ventilator.

[0041] Optionally, if the intake air flow data information is consistent with the theoretical air flow data information, the method for outputting the actual pipeline problem information includes:

[0042] Obtain the resistance information and speed information of the sound-absorbing cotton entering the pipeline from the air outlet end of the pipeline and moving towards the air inlet end;

[0043] Adjust the resistance information according to the change of the speed information and mark the resistance information when the speed information remains unchanged, and define the resistance information as the first uniform resistance information;

[0044] After the resistance information is equal to the first uniform resistance information, judge whether the resistance information is equal to the first uniform resistance information;

[0045] If it is equal, continue to move forward;

[0046] If it is not equal, obtain the abnormal position information;

[0047] Judge whether the abnormal position information is consistent with the preset variable pipeline position information;

[0048] If it is consistent, continue to move forward and continue to obtain the resistance information and speed information, and mark the first uniform resistance information when the speed information remains unchanged;

[0049] If it is not consistent, output the air leakage information and output the abnormal position information.

[0050] By adopting the above technical solution, the abnormal position information is determined by the resistance information when the sound-absorbing cotton moves along the pipeline, which further enables the staff to detect the air leakage position without using other verification methods, and improves the maintenance efficiency of the ventilator pipeline.

[0051] Optionally, it further includes a method for outputting the actual pipeline problem information when the intake air flow data information is inconsistent with the theoretical air flow data information but consistent with the current air flow data information. The method includes:

[0052] After placing the sound-absorbing cotton at the air outlet end of the pipeline, obtain the current image information of the circumferential elastic arc piece of the sound-absorbing cotton;

[0053] Analyze the upper end position information and the lower end position information of the elastic arc piece according to the current image information;

[0054] Judge whether the height of the upper end position information is equal to the lower end position information;

[0055] If it is greater than, output the information about the oversized outlet pipe diameter;

[0056] If it is equal to, output the information about the abnormal fan;

[0057] If it is less than, output the information about the undersized outlet pipe diameter.

[0058] By adopting the above technical solution, through the image of the elastic arc pieces on the outer circumference of the standard sound-absorbing cotton, the different states of the elastic arc pieces and the corresponding pipe diameters in different states are determined, so as to determine whether the pipe diameter is correct, avoid outputting the information about the abnormal fan due to the difference between the pipe diameter and the originally designed size, and improve the accuracy of problem analysis.

[0059] Optionally, it further includes a method of still outputting the information about the actual pipeline problem when the height of the upper end position information is equal to that of the lower end position information. The method includes:

[0060] Insert the sound-absorbing cotton into the pipeline from the air outlet end of the pipeline and move it towards the air inlet end, and then re-judge whether the resistance information is the first uniform resistance information;

[0061] If it is equal to, continue to move forward;

[0062] Output the information about the fan problem when the resistance information is always equal to the first uniform resistance information;

[0063] If it is not equal to, mark the resistance information and define the resistance information as abnormal resistance information;

[0064] Continue to move forward and adjust the resistance information according to the change of the speed information, and mark the resistance information when the speed information remains unchanged, and define the resistance information as the second uniform resistance information;

[0065] Judge whether the second uniform resistance information is equal to the resistance value corresponding to the first uniform resistance information;

[0066] If the second uniform resistance information is equal to the resistance value corresponding to the first uniform resistance information, judge whether the abnormal resistance information is greater than the first uniform resistance information;

[0067] If the abnormal resistance information is greater than the first uniform resistance information, output the information about the pipeline bulge;

[0068] If the abnormal resistance information is less than the first uniform resistance information, output the information about the pipeline depression;

[0069] If the second uniform resistance information is greater than the resistance value corresponding to the first uniform resistance information, extend the sound-absorbing cotton from one end of the air inlet end of the pipeline, and then conduct a resistance test in the preset air inlet end test section again and mark the resistance information when the speed information remains unchanged, and define the resistance information as the test resistance information;

[0070] If the test resistance information is equal to the first uniform speed resistance information, the sound-absorbing cotton is re-placed at the air outlet and the foreign matter has been cleared information is output;

[0071] If the test resistance information is equal to the second uniform speed resistance information, the sound-absorbing cotton is taken out from the air outlet and the foreign matter adsorption information is output.

[0072] By adopting the above technical solution, although the pipe diameter is correct, the sound-absorbing cotton is still moved from the inside to determine whether there is a problem inside. If it is an impurity, it is cleaned by automatically removing it from the air inlet end or removing the sound-absorbing cotton from the air outlet end, thereby avoiding the accumulation of impurities inside the pipe and clogging it, achieving pre-cleaning of the pipe, and improving the life and smoothness of the air flow transported by the pipe.

[0073] Optionally, the method of outputting the air leakage information and the abnormal position information includes:

[0074] Move the sound-absorbing cotton to the air inlet end and then move it from the air inlet end to the air outlet end to obtain resistance information and speed information;

[0075] When the speed information is unchanged, the resistance information is marked, and the resistance information is defined as the third uniform speed resistance information;

[0076] When the resistance information is not equal to the third uniform speed resistance information, mark the current position information;

[0077] Calculate the leakage length information according to the abnormal position information and the current position information;

[0078] Determine whether the leakage length information is greater than the preset arc width information;

[0079] If it is greater than, the abnormal position information and leakage length information are output;

[0080] If it is less than, the sound-absorbing cotton will be temporarily controlled between the current position information and the abnormal position information, and the temporary working information and abnormal position information will be output.

[0081] By adopting the above technical solution, by determining whether the length of the leakage position is greater than the thickness of the elastic arc plate outside the sound-absorbing cotton, it is determined whether the leakage position can be temporarily covered by the elastic arc plate to improve the resilience of the ventilator.

[0082] In a second aspect, the present application provides an airflow noise reduction system, which adopts the following technical solution:

[0083] An airflow noise reduction system, comprising:

[0084] An acquisition module, configured to acquire current air flow data information, current fan speed information, minimum air flow data information, resistance information, speed information, first uniform resistance information, abnormal position information, current image information, abnormal resistance information, second uniform resistance information, test resistance information, and third uniform resistance information;

[0085] A memory, configured to store a program of a control method for any of the above air flow movement noise reduction methods;

[0086] A processor, the program in the memory can be loaded and executed by the processor and implement the control method for any of the above air flow movement noise reduction methods.

[0087] By adopting the above technical solution, when noise is generated, by appropriately reducing the fan speed, the air flow rate can be reduced as much as possible below the standard decibel information, so as to achieve the purpose of reducing noise without affecting the working requirements of the fan, scientifically handle the balance between the working requirements and the noise reduction requirements, thereby achieving the purpose of targeted noise reduction and improving the intelligent noise reduction effect of the ventilator.

[0088] In a third aspect, the present application provides an oxygen generator, adopting the following technical solution:

[0089] An oxygen generator, including a memory and a processor, and a computer program capable of being loaded and executed by the processor for any of the above air flow movement noise reduction methods is stored on the memory.

[0090] By adopting the above technical solution, when noise is generated, by appropriately reducing the fan speed, the air flow rate can be reduced as much as possible below the standard decibel information, so as to achieve the purpose of reducing noise without affecting the working requirements of the fan, scientifically handle the balance between the working requirements and the noise reduction requirements, thereby achieving the purpose of targeted noise reduction and improving the intelligent noise reduction effect of the ventilator.

[0091] In a fourth aspect, the present application provides a ventilator, adopting the following technical solution:

[0092] A ventilator, including a memory and a processor, and a computer program capable of being loaded and executed by the processor for any of the above air flow movement noise reduction methods is stored on the memory.

[0093] By adopting the above technical solution, when noise is generated, by appropriately reducing the fan speed, the air flow rate can be reduced as much as possible below the standard decibel information, so as to achieve the purpose of reducing noise without affecting the working requirements of the fan, scientifically handle the balance between the working requirements and the noise reduction requirements, thereby achieving the purpose of targeted noise reduction and improving the intelligent noise reduction effect of the ventilator.

[0094] In summary, the present application includes at least one of the following beneficial technical effects:

[0095] 1. When noise is generated, the purpose of reducing noise is achieved without affecting the working requirements of the fan, achieving the purpose of targeted noise reduction and improving the intelligent noise reduction effect of the ventilator;

[0096] 2. Cleaning is performed by automatically removing the sound-absorbing cotton from the air inlet or removing it from the air outlet to avoid the accumulation of impurities inside the pipeline and blockage, thus achieving pre-cleaning of the pipeline and improving the life and smoothness of the air flow conveyed by the pipeline;

[0097] 3. The elastic arc plate is used to cover the leakage position temporarily to improve the resilience of the ventilator. BRIEF DESCRIPTION OF THE DRAWINGS

[0098] Figure 1 It is a flow chart of a method for reducing airflow noise in an embodiment of the present application.

[0099] Figure 2 It is a flowchart of a method for maintaining minimum rotation speed information if the minimum noise decibel information is greater than the standard decibel information in an embodiment of the present application.

[0100] Figure 3 It is a schematic diagram of the structure of the ventilator pipeline in an embodiment of the present application.

[0101] Figure 4 It is a flow chart of the method for checking and processing the current airflow data information in an embodiment of the present application.

[0102] Figure 5 It is a front view of the ventilator pipeline in the embodiment of the present application.

[0103] Figure 6 It is a flowchart of a method for outputting actual pipeline problem information if the intake air flow data information is consistent with the theoretical air flow data information in an embodiment of the present application.

[0104] Figure 7 It is a flow chart of a method for outputting actual pipeline problem information when the intake air flow data information is inconsistent with the theoretical air flow data information and consistent with the current air flow data information in an embodiment of the present application.

[0105] Figure 8 It is a flow chart of a method for outputting actual pipeline problem information when the height of the upper end position information is equal to the lower end position information.

[0106] Figure 9 The present invention is a flowchart of a method for outputting gas leakage information and abnormality position information.

[0107] Figure 10 It is a system module diagram of an airflow motion noise reduction method in an embodiment of the present application. DETAILED DESCRIPTION

[0108] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the following further details the present application in conjunction with the accompanying Figure 1-10 drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0109] An embodiment of the present application discloses a method for reducing noise in air flow movement. Referring to Figure 1 , the method for reducing noise in air flow movement includes:

[0110] Step 100: Obtain the current air flow data information and the current fan speed information at the air outlet end.

[0111] The current air flow data information is information such as the flow velocity, flow rate, and pressure of the air flow at the air outlet end that moves in the breathing tube of the ventilator, and is obtained by corresponding sensors such as a flow sensor. The current fan speed information is information about the speed of the fan in the ventilator, and the acquisition method can be measured by an optoelectronic code disk speed measurement method. The optoelectronic code disk is fixed on the end shaft of the motor rotor and is provided with a plurality of light-transmitting gratings. There is a photosensitive element behind the corresponding grating. When a fixed light source irradiates the optoelectronic code disk, the light passing through the grating is received by the photosensitive element and generates a pulsed electrical signal, thereby obtaining the speed.

[0112] Step 101: Perform matching analysis based on the noise decibel information stored in the preset air flow database and the current air flow data information to determine the noise decibel corresponding to the current air flow data information, and define this noise decibel as the current noise decibel information.

[0113] The current noise decibel information is information about the decibel level of the noise generated when the air flow at the air outlet end is the current air flow data information. The database stores the mapping relationship between the noise decibel information and the current air flow data information, which is obtained by those skilled in the art based on a large number of tests and measurements. When the system receives the corresponding current air flow data information, it automatically searches the database for the corresponding noise decibel and outputs it as the current noise decibel information.

[0114] Step 102: Determine whether the current noise decibel information is greater than the preset standard decibel information.

[0115] The standard decibel information is the highest limit of noise specified artificially, generally set according to the value that normal people do not feel discomfort in normal life. If it is a patient under treatment, a lower value can be set.

[0116] Step 1021: If it is less, no change is made.

[0117] If it is less, it means that although it is noise, it does not affect, so the speed of the fan can be unchanged.

[0118] Step 1022: If it is greater than, perform matching analysis based on the working condition information stored in the preset working condition database and the current fan speed information to determine the working condition corresponding to the current fan speed information, and define this working condition as the current working condition information.

[0119] The current working condition information is the information about the current working situation of the current ventilator, including information such as rotation gear, speed range, function, etc. The mapping relationship between the working condition information and the current fan speed information is stored in the database, which is obtained by the staff in this field setting different fan speed ranges according to the requirements of the working condition after setting the working condition information. When the system receives the corresponding current fan speed information, it automatically searches the database for the corresponding working condition and outputs it as the current working condition information. When it is greater than, it means that there is noise at this time, so the fan speed needs to be reduced. Since the current working condition needs to meet a certain speed, the current working condition information needs to be known.

[0120] Step 103: Perform matching analysis based on the fan speed range information stored in the working condition database and the current working condition information to determine the fan speed range corresponding to the current working condition information, and define this fan speed range as the current fan speed range information.

[0121] The current fan speed range information is the information about the fan speed range that meets the requirements of the current working condition information. The mapping relationship between the fan speed range information and the current working condition information is stored in the database, which is obtained by the staff in this field setting different fan speed ranges according to the requirements of the working condition after setting the working condition information. When the system receives the corresponding current fan speed range information, it automatically searches the database for the corresponding fan speed range and outputs it as the current fan speed range information.

[0122] Step 104: Screen the minimum value in the current fan speed range information and define this minimum value as the minimum speed information.

[0123] The minimum speed information is the information about the fan speed corresponding to the minimum value in the current fan speed range information. The screening method is to select the smaller one of the critical values of the current fan speed range information.

[0124] Step 105: Gradually adjust the speed of the fan from the current fan speed information to the minimum speed information, and then obtain the air flow size when the fan is adjusted to the minimum speed information, and define this air flow size as the minimum air flow data information.

[0125] The minimum air flow data information is the information about the air flow data size when the fan is at the minimum fan speed information.

[0126] Step 106: Perform a matching analysis based on the noise decibel information and the minimum air flow data information stored in the air flow database to determine the noise decibel corresponding to the minimum air flow data information, and define this noise decibel as the minimum noise decibel information.

[0127] The minimum noise decibel information is the information about the decibel level of the noise generated when the air flow at the air outlet is the minimum air flow data information. The database is established in the manner of Step 101, which will not be elaborated here. When the system receives the corresponding minimum air flow data information, it automatically searches the database for the corresponding noise decibel and outputs it as the minimum noise decibel information.

[0128] Step 107: Determine whether the minimum noise decibel information is greater than the standard decibel information.

[0129] Step 1071: If it is greater, maintain the minimum rotation speed information.

[0130] If it is still greater, it means that the fan rotation speed corresponding to the minimum rotation speed information is still relatively high, but it is already the minimum rotation speed. Therefore, it can only be reduced to the minimum noise decibel information.

[0131] Step 1072: If it is less, perform a matching analysis based on the air flow data information and the standard decibel information stored in the air flow database to determine the air flow data corresponding to the standard decibel information, and define this air flow data as the standard air flow data information.

[0132] The standard air flow data information is the information about the air flow data when the noise decibel corresponding to the standard decibel information can be generated. The database is established in the manner of Step 101, which will not be elaborated here. When the system receives the corresponding standard decibel information, it automatically searches the database for the corresponding air flow data and outputs it as the standard air flow data information. If it is less, it means that the standard noise decibel is satisfied at this time. Therefore, in order to make it close to the current fan rotation speed, it needs to be increased further.

[0133] Step 108: Increase the fan rotation speed from the minimum rotation speed information until the standard air flow data information is obtained.

[0134] It should be noted that in order to ensure that the standard decibel is not exceeded due to unexpected situations, the increase in the fan rotation speed can be slightly stopped just before reaching the standard air flow data information, so as to control the noise decibel below the standard decibel information.

[0135] Refer to Figure 2 , if the minimum noise decibel information is greater than the standard decibel information, the method for maintaining the minimum rotation speed information includes:

[0136] Step 200: Calculate the decibel reduction information based on the minimum noise decibel information and the decibel reduction information of the sound-absorbing cotton.

[0137] The sound-absorbing cotton's decibel reduction information is the information on the decibels of noise that the sound-absorbing cotton can absorb. Here, it is a theoretical value, taking the lowest absorption amplitude as the standard, aiming to ensure the noise reduction ability. The reduced decibel information is the decibel information obtained after further reducing the decibels corresponding to the sound-absorbing cotton's decibel reduction information from the minimum noise decibel information. The calculation method is the decibel value corresponding to the minimum noise decibel information minus the sound-absorbing cotton's decibel reduction information.

[0138] Step 201: Determine whether the reduced decibel information is less than 0.

[0139] Since it is directly calculated, the reduced decibel information may be less than 0. Here, it is judged whether it is less than 0. Because there is a sound-absorbing cotton, the effect should be better, so it can be controlled in a noise-free situation.

[0140] Step 2011: If it is greater than, the rotational speed of the fan is gradually adjusted from the current fan rotational speed information to the minimum rotational speed information and a sound-absorbing cotton is placed at the air outlet end.

[0141] If it is greater than, it means that there is still noise at this time, so it can still rotate at the minimum rotational speed information. As Figure 3 shown, a sound-absorbing cotton is also placed at the air outlet end of the breathing pipe. The sound-absorbing cotton has relatively large pores, so the sound-absorbing cotton generally does not affect the air flow in the breathing pipe.

[0142] Step 2012: If it is less than, calculate the increased noise decibel information based on the minimum noise decibel information and the reduced decibel information.

[0143] The increased noise decibel information is the noise decibel information after increasing the reduced decibel information from the minimum noise decibel information. The calculation method is to add the minimum noise decibel information and the reduced decibel information. If it is less than, it means that the fan does not need to be reduced to the minimum rotational speed information to reduce the noise to 0.

[0144] Step 202: Perform a matching analysis based on the air flow data information stored in the air flow database and the increased noise decibel information to determine the air flow data corresponding to the increased noise decibel information, and define this air flow data as the increased air flow data information.

[0145] The increased air flow data information is the air flow data information when generating the decibels corresponding to the increased noise decibel information. The database is established by the method of step 101, which will not be elaborated here. When the system receives the corresponding increased noise decibel information, it automatically searches for the corresponding air flow data in the database and outputs it as the increased air flow data information.

[0146] Step 203: Increase the fan rotational speed information from the minimum rotational speed information until the increased air flow data information is obtained and a sound-absorbing cotton is placed at the air outlet end.

[0147] Reference Figure 4 , and also includes a checking and processing method for current air flow data information, and the method includes:

[0148] Step 300: Perform matching analysis based on the air flow data information stored in the preset theoretical database and the current fan speed information to determine the air flow data corresponding to the current fan speed information, and define this air flow data as theoretical air flow data information.

[0149] The theoretical air flow data information is the information of the theoretically generated air flow data of the current fan speed information. The mapping relationship between the air flow data information and the current fan speed information is stored in the database, and the staff in this field controls the fan to generate different speeds, and then measures at the air outlet end of the breathing pipe to obtain. When the system receives the corresponding current fan speed information, it automatically searches the database for the corresponding air flow data and outputs it as the theoretical air flow data information.

[0150] It should be noted that this step is automatically performed by the system before the user uses it or regularly, and the purpose is to repair the equipment.

[0151] Step 301: Determine whether the air flow velocity in the current air flow data information is consistent with the air flow velocity in the theoretical air flow data information.

[0152] The purpose of the determination is to determine whether the ventilator is working properly.

[0153] Step 3011: If the air flow velocity in the current air flow data information is consistent with the air flow velocity in the theoretical air flow data information, output the current air flow data information.

[0154] If they are consistent, it means that the ventilator is working properly, and the current air flow data information can be normally output.

[0155] Step 3012: If the air flow velocity in the current air flow data information is inconsistent with the air flow velocity in the theoretical air flow data information, obtain the intake air flow data information at the intake end of the inlet pipe.

[0156] The intake air flow data information is the information of the air flow data at the intake end as shown in Figure 3 . If they are inconsistent, it means that there is a problem, and the reason needs to be checked.

[0157] Step 302: Determine whether the intake air flow data information is consistent with the theoretical air flow data information.

[0158] The purpose of the determination is to determine whether the air flow entering from the intake end is normal, that is, whether the fan is working properly. The situation of air flow change in the normal pipeline is ignored here.

[0159] Step 3021: If the intake air flow data information is consistent with the theoretical air flow data information, analyze the air flow data difference information based on the current air flow data information and the intake air flow data information.

[0160] The air flow data difference information is the information about the difference between the current air flow data information and the intake air flow data information, such as the flow velocity difference and the flow rate difference. If they are consistent, it means the intake end is normal, that is, the fan is working properly. Since the air flow at the outlet end is abnormal, it indicates a problem with the pipeline.

[0161] Step 3022: If the intake air flow data information is inconsistent with the theoretical air flow data information and is consistent with the current air flow data information, output the fan problem information.

[0162] The fan problem information is the information about the reason for the data anomaly being a problem with the fan. It can be output in text form. If they are also inconsistent, it means there is a problem with the fan at this time.

[0163] If the intake air flow data information is inconsistent with the theoretical air flow data information and is inconsistent with the current air flow data information, it means there are problems with both the fan and the pipeline at this time, so the fan problem and the pipeline problem can be output simultaneously.

[0164] Step 303: Perform a matching analysis based on the pipeline problem information and the air flow data difference information stored in the preset problem database to determine the pipeline problem corresponding to the air flow data difference information, and define this pipeline problem as the actual pipeline problem information.

[0165] The actual pipeline problem information is the information indicating that the situation of generating the air flow data difference information is due to problems inside the pipeline. The database stores the mapping relationship between the pipeline problem information and the air flow data difference information, which is recorded by the staff in this field based on the data differences brought by the actual problems. When the system receives the air flow data difference information, it automatically searches the database for the corresponding pipeline problem and outputs it as the actual pipeline problem information.

[0166] Step 304: Output the actual pipeline problem information.

[0167] Refer to Figure 6 , if the intake air flow data information is consistent with the theoretical air flow data information, the method for outputting the actual pipeline problem information includes:

[0168] Step 400: Obtain the resistance information and the velocity information of the sound-absorbing cotton moving from the outlet end of the pipeline into the pipeline interior towards the intake end.

[0169] The resistance information is the information of the resistance received by the push rod when the sound-absorbing cotton enters the inside of the pipeline from the air outlet end of the pipeline and moves towards the air inlet end. The acquisition method is obtained by setting a pressure sensor on the rod body. The speed information is the information of the speed when the sound-absorbing cotton enters the inside of the pipeline from the air outlet end of the pipeline and moves towards the air inlet end. The acquisition method is obtained by setting a displacement sensor on the rod body.

[0170] Step 401: Adjust the resistance information according to the change of the speed information and mark the resistance information when the speed information remains unchanged, and define this resistance information as the first uniform resistance information.

[0171] The first uniform resistance information is the information of the resistance received by the rod body when the speed continuously increases until it reaches a uniform speed. At this time, the resistance only overcomes the resistance of the sound-absorbing cotton sliding inside the pipeline, including frictional force and air resistance. As Figure 5 shown, in order to facilitate the sliding of the sound-absorbing cotton, an elastic arc piece is arranged on the outer circle of the sound-absorbing cotton, and then a push rod is fixedly connected to the elastic arc piece. Therefore, when detecting, the breathing pipeline needs to be straightened.

[0172] Step 402: After the resistance information is equal to the first uniform resistance information, judge whether the resistance information is equal to the first uniform resistance information.

[0173] Step 4021: If it is equal, continue to move forward.

[0174] If it is equal, it means that it is still in the normal stage, and then it can continue to move forward to continue the detection.

[0175] Step 4022: If it is not equal, obtain the abnormal position information.

[0176] The abnormal position information is the information of the position inside the pipeline when the resistance information is not equal to the first uniform resistance information. If it is not equal, it means that an abnormality occurs at this time, and then record the current position as the abnormal position. The acquisition method is obtained by recording through a displacement sensor.

[0177] Step 403: Judge whether the abnormal position information is consistent with the preset variable pipeline position information.

[0178] The variable pipeline position information is the information of the position where the unevenness existing in the breathing pipeline itself will cause the airflow data to change.

[0179] Step 4031: If it is consistent, continue to move forward and continue to obtain the resistance information and the speed information, and mark the first uniform resistance information when the speed information remains unchanged.

[0180] If it is consistent, it means that the change is caused by the pipeline structure rather than an abnormal problem, and then it can continue to move forward.

[0181] Step 4032: If they are inconsistent, output the air leakage information and the abnormal position information.

[0182] The air leakage information is the information of gas leakage. If they are inconsistent, it indicates that there is indeed abnormal position information, and the reason for the different data is air leakage. It should be noted that the presence of impurities or pits inside does not affect the consistency of the data at both ends, so the only reason can be air leakage.

[0183] Refer to Figure 7 , and it also includes a method of outputting the actual pipeline problem information when the intake air flow data information and the theoretical air flow data information are inconsistent and consistent with the current air flow data information. The method includes:

[0184] Step 500: After placing the sound-absorbing cotton at the air outlet end of the pipeline, obtain the current image information of the circumferential elastic arc of the sound-absorbing cotton.

[0185] The current image information is the image information taken from the air outlet end. As Figure 5 shown, the inside of the pipeline is sound-absorbing cotton, and an elastic arc is fixedly connected to the outer ring of the sound-absorbing cotton, which can keep the sound-absorbing cotton always open and then abut against the inner wall of the pipeline. Generally, an elastic arc that is adapted to the theoretical pipeline diameter is placed here before starting. That is, theoretically, when placed, the elastic arcs should just form a complete ring without any excess or shortage. Since the intake air flow data information and the theoretical air flow data information are inconsistent and consistent with the current air flow data information, it indicates that at least the head and tail ends inside the pipeline are consistent. Then, it may be a problem with the selection of the pipeline diameter. Therefore, it is necessary to determine the image of the elastic arc.

[0186] Step 501: Analyze the upper end position information and the lower end position information of the elastic arc according to the current image information.

[0187] The upper end position information is the position information of the end of the arc of the elastic arc close to the upper part of the pipeline after the elastic arc is placed. The lower end position information is the position information of the end of the arc of the elastic arc close to the lower part of the pipeline after the elastic arc is placed. The definition here is only to distinguish the two, not the real upper and lower in a strict sense, but only the upper and lower in the image from the shooting angle. The analysis method can be to apply different colors on the corresponding sides of the upper end position information and the lower end position information respectively, and then identify the points corresponding to the gray values of the colors from the picture.

[0188] Step 502: Judge whether the height of the upper end position information is equal to the lower end position information.

[0189] The purpose of the judgment is to determine whether it just fits and is in the Figure 5 position.

[0190] Step 5021: If it is greater, output the information of the problem of too large pipe diameter.

[0191] The information about the problem of the pipe diameter being too large is the information about the problem that the pipe diameter is larger than the theoretical pipe diameter. The output method is text output. If it is greater, it means that the upper end position information is above the lower end position information, which means that the two ends are separated at this time, and the information about the problem of the pipe diameter being too large can be output.

[0192] Step 5022: If it is equal, output the information about the fan abnormality.

[0193] If it is equal, it means that the pipe diameter is also correct at this time, which means that it is still a problem of the fan, and the information about the fan abnormality can be output.

[0194] Step 5023: If it is less, output the information about the problem of the pipe diameter being too small.

[0195] The information about the problem of the pipe diameter being too small is the problem that the pipe diameter is smaller than the theoretical pipe diameter. If it is less, it means that the upper end is below the lower end at this time, which means that the two ends are staggered, and the information about the problem of the pipe being too small can be output.

[0196] Refer to Figure 8 , and it also includes the method of still outputting the information about the actual pipe problem when the height of the upper end position information is equal to the lower end position information. This method includes:

[0197] Step 600: Enter the sound-absorbing cotton into the pipe from the air outlet end of the pipe and move it towards the air inlet end, and then re-judge whether the resistance information is the first uniform resistance information.

[0198] The purpose of continuing to move forward is to eliminate the problems of impurities or depressions inside. Since the gas inside the pipe is related to the pipe diameter, when the pipe diameters at both ends are the same, even if there are any changes inside, as long as there is no air leakage, the gas data at both ends will still be the same. And the presence of impurities inside is the most important thing to detect. Therefore, even if the gas data is okay, it is necessary to detect whether there are impurities inside.

[0199] Step 6001: If it is equal, continue to move forward.

[0200] Step 6002: If it is not equal, mark the resistance information and define this resistance information as abnormal resistance information.

[0201] The abnormal resistance information is the resistance different from the first uniform resistance information. The prerequisite here is that the intake air flow data information is inconsistent with the theoretical air flow data information and is consistent with the current air flow data information, and the height of the upper end position information is equal to the lower end position information.

[0202] Step 601: When the resistance information is always equal to the first uniform resistance information, output the information about the fan problem.

[0203] If it is always equal, it means there is no problem in the middle, and the fan problem information can be output. It should be noted here that the position information of the changing pipeline is excluded.

[0204] Step 602: Move forward and adjust the resistance information according to the change of the speed information, and mark the resistance information when the speed information remains unchanged, and define this resistance information as the second constant-speed resistance information.

[0205] The second constant-speed resistance information is similar to the first constant-speed resistance information, and will not be elaborated here. The difference is that this resistance information is after passing the position corresponding to the abnormal resistance information.

[0206] Step 603: Determine whether the second constant-speed resistance information is equal to the resistance value corresponding to the first constant-speed resistance information.

[0207] Step 6031: If the second constant-speed resistance information is equal to the resistance value corresponding to the first constant-speed resistance information, determine whether the abnormal resistance information is greater than the first constant-speed resistance information.

[0208] If they are equal, it means that the position corresponding to the abnormal resistance information has been passed at this time and nothing has changed. The purpose of the judgment is to determine the situation at the position corresponding to the abnormal resistance information.

[0209] Step 6032: If the second constant-speed resistance information is greater than the resistance value corresponding to the first constant-speed resistance information, extend the sound-absorbing cotton from one end of the air inlet of the pipeline and then conduct a resistance test in the preset air inlet test section, and mark the resistance information when the speed information remains unchanged, and define this resistance information as the test resistance information.

[0210] If the second constant-speed resistance information is greater than the resistance value corresponding to the first constant-speed resistance information, it means that the abnormality at the abnormal position information is impurities and they move forward with the sound-absorbing cotton. The test resistance information is to extend the sound-absorbing cotton from one end of the air inlet of the pipeline and then conduct a resistance test in the preset air inlet test section, that is, the resistance information when continuing to move towards the port of the air inlet.

[0211] Step 6041: If the abnormal resistance information is greater than the first constant-speed resistance information, output the pipeline bulge information.

[0212] The pipeline bulge information is the information that the inner wall of the pipeline bulges. The output method is in text form. If it is greater, it means that there is an object obstructing the progress of the sound-absorbing cotton, which means that there is a foreign object here. Since the foreign object does not move with the sound-absorbing cotton, it means that the foreign object is integrated with the pipeline, and the pipeline bulge information can be output.

[0213] Step 6042: If the abnormal resistance information is less than the first constant-speed resistance information, output the pipeline depression information.

[0214] The pipeline depression information is the information of the depression on the inner wall of the pipeline. If it is less than, it means that some of the gas here does not pass over the sound-absorbing cotton, which means there is a pit in the pipeline, and then the pipeline depression information is output.

[0215] Step 605: When the test resistance information is equal to the first uniform resistance information, place the sound-absorbing cotton at the air outlet end again and output the information that the foreign object has been cleared.

[0216] The information that the foreign object has been cleared means that although there was a foreign object on it, it has been pushed out of the pipeline and cleared. If the test resistance information is equal to the first uniform resistance information, it means that the impurities on the sound-absorbing cotton no longer affect the sound-absorbing cotton and are separated from the sound-absorbing cotton, and then the information that the foreign object has been cleared is output.

[0217] Step 606: When the test resistance information is equal to the second uniform resistance information, take out the sound-absorbing cotton from the air outlet end and output the foreign object adsorption information.

[0218] The foreign object adsorption information is the information that the foreign object is adsorbed on the sound-absorbing cotton. If the test resistance information is equal to the second uniform resistance information, it means that the foreign object is still on the sound-absorbing cotton. Since the sound-absorbing cotton has passed through the air inlet end and is suspended during the processing, if the foreign object does not fall off at this time, it must be on the sound-absorbing cotton, and it may be absorbed or adhered. It is necessary to take out the sound-absorbing cotton from the air outlet end and output the foreign object adsorption information.

[0219] Refer to Figure 9 , the method for outputting the air leakage information and the abnormal position information includes:

[0220] Step 700: Move the sound-absorbing cotton to the air inlet end and then move it from the air inlet end to the air outlet end to obtain the resistance information and the speed information.

[0221] This is a reverse movement, different from step 600.

[0222] Step 701: Mark the resistance information when the speed information remains unchanged, and define this resistance information as the third uniform resistance information.

[0223] The third uniform resistance information is the resistance information when the sound-absorbing cotton is moved to the air inlet end and then moved from the air inlet end to the air outlet end, which is actually the pulling force information.

[0224] Step 702: Mark the current position information when the resistance information is not equal to the third uniform resistance information.

[0225] The current position information is the position information when the resistance information is not equal to the third uniform resistance information.

[0226] Step 703: Calculate the air leakage length information according to the abnormal position information and the current position information.

[0227] The air leakage length information is the information of the length corresponding to the abnormal position from the abnormal position information to the current position information. When the resistance information is not equal to the third uniform resistance information, it indicates that the abnormality has started, and thus the end point of the abnormality calculated from the air inlet end can be known, and the end point of the air outlet end is the abnormal position information where the resistance information is not equal to the first uniform resistance information. The calculation method is to subtract the coordinate values. Here, the maximum length is taken, that is, even if there are two or more abnormal position information, the farthest abnormal position information is used to calculate the air leakage length information.

[0228] Step 704: Determine whether the air leakage length information is greater than the preset arc piece width information.

[0229] The arc piece width information is the information of the width of the elastic arc piece outside the sound-absorbing cotton along the pipeline length direction.

[0230] Step 7041: If it is greater, output the abnormal position information and the air leakage length information.

[0231] If it is greater, it means that the elastic arc piece cannot completely cover the abnormal position at this time, so the abnormal position information and the air leakage length information can be output.

[0232] Step 7042: If it is less, temporarily control the sound-absorbing cotton between the current position information and the abnormal position information and output the temporary working information and the abnormal position information.

[0233] The temporary working information is the information that if it is more urgent to use the breathing pipeline of the ventilator, it can continue to work. If it is less, it means that the sound-absorbing cotton can be placed at the corresponding position for temporary filling work, so the temporary working information and the abnormal position information are output.

[0234] Based on the same inventive concept, an embodiment of the present invention provides an air flow movement noise reduction system.

[0235] Refer to Figure 8 , an air flow movement noise reduction system, including:

[0236] An acquisition module, configured to acquire current air flow data information, current fan speed information, minimum air flow data information, resistance information, speed information, first uniform resistance information, abnormal position information, current image information, abnormal resistance information, second uniform resistance information, test resistance information, and third uniform resistance information;

[0237] A memory, configured to store a program of a control method for an air flow movement noise reduction method;

[0238] A processor, and the program in the memory can be loaded and executed by the processor to implement the control method of the air flow movement noise reduction method.

[0239] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-described system, device, and unit can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0240] An embodiment of the present invention provides an oxygen generator, including a memory and a processor, and a computer program capable of being loaded and executed by the processor for the airflow movement noise reduction method is stored on the memory.

[0241] Based on the same inventive concept, an embodiment of the present invention provides a ventilator, including a memory and a processor, and a computer program capable of being loaded and executed by the processor for the airflow movement noise reduction method is stored on the memory.

[0242] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-described system, device, and unit can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0243] The above are all preferred embodiments of this application. The protection scope of this application is not limited by this. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

Claims

1. An airflow movement noise reduction method, characterized in that, Including: Obtain the current air flow data information and the current fan speed information at the air outlet end; Perform matching analysis based on the noise decibel information stored in the preset air flow database and the current air flow data information to determine the noise decibel corresponding to the current air flow data information, and define this noise decibel as the current noise decibel information; Judge whether the current noise decibel information is greater than the preset standard decibel information; If it is less, no change is made; If it is greater, perform matching analysis based on the working condition information stored in the preset working condition database and the current fan speed information to determine the working condition corresponding to the current fan speed information, and define this working condition as the current working condition information; Perform matching analysis based on the fan speed range information stored in the working condition database and the current working condition information to determine the fan speed range corresponding to the current working condition information, and define this fan speed range as the current fan speed range information; Screen the minimum value in the current fan speed range information, and define this minimum value as the minimum speed information; After the fan speed gradually adjusts from the current fan speed information to the minimum speed information, obtain the air flow size when the fan is adjusted to the minimum speed information, and define this air flow size as the minimum air flow data information; Perform matching analysis based on the noise decibel information stored in the air flow database and the minimum air flow data information to determine the noise decibel corresponding to the minimum air flow data information, and define this noise decibel as the minimum noise decibel information; Judge whether the minimum noise decibel information is greater than the standard decibel information; If it is greater, maintain the minimum speed information; If it is less, perform matching analysis based on the air flow data information stored in the air flow database and the standard decibel information to determine the air flow data corresponding to the standard decibel information, and define this air flow data as the standard air flow data information; Increase the fan speed from the minimum speed information until the standard air flow data information is obtained.

2. The airflow movement noise reduction method according to claim 1, wherein If the minimum noise decibel information is greater than the standard decibel information, the method for maintaining the minimum speed information includes: Calculate the decibel reduction information based on the minimum noise decibel information and the decibel reduction information of the sound-absorbing cotton; Judge whether the decibel reduction information is less than 0; If it is greater, the fan speed gradually adjusts from the current fan speed information to the minimum speed information and a sound-absorbing cotton is placed at the air outlet end; If it is less, calculate the increased noise decibel information based on the minimum noise decibel information and the decibel reduction information; Perform matching analysis based on the air flow data information stored in the air flow database and the increased noise decibel information to determine the air flow data corresponding to the increased noise decibel information, and define this air flow data as the increased air flow data information; Increase the fan speed information from the minimum speed information until the increased air flow data information is obtained and a sound-absorbing cotton is placed at the air outlet end.

3. The airflow movement noise reduction method according to claim 2, characterized in that, It also includes a verification processing method for the current air flow data information, and this method includes: Perform matching analysis based on the air flow data information stored in the preset theoretical database and the current fan speed information to determine the air flow data corresponding to the current fan speed information, and define this air flow data as the theoretical air flow data information; Judge whether the air flow velocity in the current air flow data information is consistent with the air flow velocity in the theoretical air flow data information; If the air flow velocity in the current air flow data information is the same as that in the theoretical air flow data information, output the current air flow data information; If the air flow velocity in the current air flow data information is different from that in the theoretical air flow data information, obtain the intake air flow data information at the intake end of the inlet pipe; Determine whether the intake air flow data information is the same as the theoretical air flow data information; If the intake air flow data information is the same as the theoretical air flow data information, analyze the air flow data difference information based on the current air flow data information and the intake air flow data information; Perform matching analysis based on the pipeline problem information stored in the preset problem database and the air flow data difference information to determine the pipeline problem corresponding to the air flow data difference information, and define this pipeline problem as the actual pipeline problem information; Output the actual pipeline problem information; If the intake air flow data information is different from the theoretical air flow data information and the same as the current air flow data information, output the fan problem information.

4. The airflow movement noise reduction method according to claim 3, wherein If the intake air flow data information is the same as the theoretical air flow data information, the method for outputting the actual pipeline problem information includes: Obtain the resistance information and speed information of the sound-absorbing cotton entering the pipeline from the outlet end of the pipeline and moving towards the inlet end; Adjust the resistance information according to the change of the speed information and mark the resistance information when the speed information remains unchanged, and define this resistance information as the first uniform resistance information; After the resistance information is equal to the first uniform resistance information, determine whether the resistance information is equal to the first uniform resistance information; If it is equal, continue to move forward; If it is not equal, obtain the abnormal position information; Determine whether the abnormal position information is the same as the preset variable pipeline position information; If it is the same, continue to move forward and continue to obtain the resistance information and speed information, and mark the first uniform resistance information when the speed information remains unchanged; If it is not the same, output the air leakage information and output the abnormal position information.

5. A method for reducing noise in air flow movement according to claim 4, characterized in that, It also includes the method for outputting the actual pipeline problem information when the intake air flow data information is different from the theoretical air flow data information and the same as the current air flow data information. This method includes: After placing the sound-absorbing cotton at the outlet end of the pipeline, obtain the current image information of the circumferential elastic arc of the sound-absorbing cotton; Analyze the upper end position information and lower end position information of the elastic arc according to the current image information; Determine whether the height of the upper end position information is equal to the lower end position information; If it is greater, output the problem information of the pipe diameter being too large; If it is equal, output the fan abnormality information; If it is less, output the problem information of the pipe diameter being too small.

6. A method for reducing noise by air flow movement according to claim 5, characterized in that, It also includes the method for still outputting the actual pipeline problem information when the height of the upper end position information is equal to the lower end position information. This method includes: After the sound-absorbing cotton enters the pipeline from the outlet end of the pipeline and moves towards the inlet end, re-determine whether the resistance information is the first uniform resistance information; If it is equal, continue to move forward; When the resistance information is always equal to the first uniform resistance information, output the fan problem information; If it is not equal, mark the resistance information and define this resistance information as the abnormal resistance information; Continue to move forward and adjust the resistance information according to the change of the speed information, and mark the resistance information when the speed information remains unchanged, and define this resistance information as the second uniform resistance information; Determine whether the second uniform resistance information is equal to the resistance value corresponding to the first uniform resistance information; If the second uniform resistance information is equal to the resistance value corresponding to the first uniform resistance information, then determine whether the abnormal resistance information is greater than the first uniform resistance information; If the abnormal resistance information is greater than the first uniform resistance information, output pipeline bulge information; If the abnormal resistance information is less than the first uniform resistance information, output pipeline depression information; If the second uniform resistance information is greater than the resistance value corresponding to the first uniform resistance information, extend the sound-absorbing cotton from one end of the air inlet end of the pipeline and then conduct a resistance test in the preset air inlet test section and mark the resistance information when the speed information remains unchanged, and define this resistance information as the test resistance information; If the test resistance information is equal to the first uniform resistance information, place the sound-absorbing cotton at the air outlet end again and output the information that the foreign object has been cleared; If the test resistance information is equal to the second uniform resistance information, take out the sound-absorbing cotton from the air outlet end and output the foreign object adsorption information.

7. A method for reducing noise in air flow movement according to claim 5, characterized in that, The method for outputting air leakage information and abnormal position information includes: Move the sound-absorbing cotton to the air inlet end and then move from the air inlet end to the air outlet end to obtain resistance information and speed information; Mark the resistance information when the speed information remains unchanged, and define this resistance information as the third uniform resistance information; Mark the current position information when the resistance information is not equal to the third uniform resistance information; Calculate the air leakage length information according to the abnormal position information and the current position information; Determine whether the air leakage length information is greater than the preset arc piece width information; If it is greater, output the abnormal position information and the air leakage length information; If it is less, temporarily control the sound-absorbing cotton between the current position information and the abnormal position information and output the temporary working information and the abnormal position information.

8. An airflow movement noise reduction system, characterized in that, Include An acquisition module, configured to acquire current air flow data information, current fan speed information, minimum air flow data information, resistance information, speed information, first uniform resistance information, abnormal position information, current image information, abnormal resistance information, second uniform resistance information, test resistance information, and third uniform resistance information; A memory, configured to store a program of a control method for an air flow movement noise reduction method according to any one of claims 1 to 7; A processor, the program in the memory can be loaded and executed by the processor and implement a control method for an air flow movement noise reduction method according to any one of claims 1 to 7.

9. An oxygen generator, characterized in that, Include a memory and a processor, and a computer program capable of being loaded and executed by the processor according to any one of the methods in claims 1 to 7 is stored on the memory.

10. A ventilator, characterized in that, Include a memory and a processor, and a computer program capable of being loaded and executed by the processor according to any one of the methods in claims 1 to 7 is stored on the memory.

Images